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Brictec Summarizes Systematic Tunnel Kiln Maintenance System 

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This will result in all ordered list items displaying "1. 1. 1. ..." */ } .gtr-container-k7p2q8 .gtr-table-wrapper { overflow-x: auto; margin-bottom: 15px; } .gtr-container-k7p2q8 table { width: 100%; border-collapse: collapse !important; border-spacing: 0 !important; margin-bottom: 15px; font-size: 14px; color: #333; } .gtr-container-k7p2q8 th, .gtr-container-k7p2q8 td { border: 1px solid #ccc !important; padding: 10px !important; text-align: left !important; vertical-align: top !important; word-break: normal; overflow-wrap: normal; } .gtr-container-k7p2q8 th { font-weight: bold !important; background-color: #f0f0f0; } .gtr-container-k7p2q8 tr:nth-child(even) { background-color: #f9f9f9; } @media (min-width: 768px) { .gtr-container-k7p2q8 { padding: 30px 50px; max-width: 960px; margin: 0 auto; } .gtr-container-k7p2q8 .gtr-main-title { font-size: 24px; margin-bottom: 30px; } .gtr-container-k7p2q8 .gtr-section-title { font-size: 20px; margin-top: 35px; margin-bottom: 20px; } .gtr-container-k7p2q8 .gtr-subsection-title { font-size: 16px; margin-top: 25px; margin-bottom: 12px; } .gtr-container-k7p2q8 .gtr-paragraph { margin-bottom: 18px; } .gtr-container-k7p2q8 .gtr-image-container { margin-bottom: 30px; } } Brictec Summarizes Systematic Tunnel Kiln Maintenance System Based on Brick Plant EPC Project Management Experience and Actual Operation The maintenance of a tunnel kiln in a clay sintered brick plant is by no means limited to kiln cars, fans, burners, high-temperature bearings, etc. In fact, it is a comprehensive maintenance system integrating a complete thermal system, a mechanical maintenance system, and an automatic control system.Systematic maintenance in the daily operation and management of a brick plant is the guarantee of normal production. Based on years of brick plant EPC project experience and observations, Brictec has found that many brick plants lack systematic daily maintenance standards and inspection checklists. Brictec has now compiled the core tunnel kiln maintenance system for reference. I. Overview of the Tunnel Kiln Core Maintenance System Tunnel kiln maintenance can be divided into six major systems: Kiln Structure System Combustion System (Burners) Ventilation and Thermal System Transmission and Transport System Automatic Control System Auxiliary Heat Utilization System (Drying Chamber, etc.) II. Kiln Structure System (Most Easily Overlooked, but Most Critical) 1. Kiln Lining Refractory Materials Key inspection points: Refractory brick falling off / cracking, insulation layer pulverization, arch crown sagging, expansion joint failure. Common problems: Air leakage, increased heat loss. 2. Kiln Steel Structure Inspection items: Steel structure deformation, weld cracking, proper thermal expansion compensation. 3. Kiln Door System (Kiln Head / Kiln Tail) Key points: Sealing performance (very critical), air leakage condition, smooth operation of opening/closing mechanism. III. Combustion System (Core) 1. Burner (Natural Gas / Heavy Oil / Pulverized Coal) Maintenance focus: Nozzle carbon deposition / clogging, stable flame shape, normal ignition system. Common problems: Flame deflection, excessively long/short flame, local overburning or underburning. 2. Fuel Supply System Natural gas system: Pressure reducing valve, flow meter, pipeline sealing. Heavy oil system: Heating system, filtration system, injection pressure. IV. Ventilation and Thermal System (Determines Firing Quality) 1. Induced Draft Fan / Exhaust Fan Inspection: Air flow stability, impeller dust accumulation, vibration. 2. Kiln Pressure System Key control: Stable micro-negative pressure, preventing cold air backflow. 3. Air Duct System Inspection: Blockage, air leakage, dust accumulation. 4. Temperature Measurement System Includes: Thermocouples, temperature controllers. Problems: Temperature drift, measurement point distortion. V. Transmission and Transport System 1. Pusher / Puller Inspection: Thrust stability, stroke control, chain wear. 2. Rail System Key points: Rail levelness, gauge, local settlement. 3. Kiln Car Sealing System Inspection: Kiln car sand seal, sealing plate. VI. Automatic Control System (Core of Modern Brick Plants) 1. PLC Control System Inspection: Program stability, signal feedback. 2. Sensor System Includes: Temperature, pressure, flow. Problem: Error accumulation → firing curve out of control. 3. Actuators Examples: Electric valves, damper actuators. Inspection: Response speed, accuracy. VII. Drying System (Strongly Correlated) Maintenance includes: Drying fans, hot air pipes, humidity control. VIII. Easily Overlooked but Very Critical Points (Summary of Experience) 1. Air Leakage Management (Top Priority) The biggest hidden dangers of a tunnel kiln: Kiln door, kiln car, kiln body cracks. 2. Temperature Curve Consistency Not just "temperature is high enough", but: whether the curve is stable + whether it is repeatable. 3. Combustion Uniformity Determines: Brick color, strength, cracks.

2026

04/07

Lithium Battery Anode Material Tunnel Kiln Burner Manufacturer

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Brictec leveraging advanced European thermal technology and years of experience in tunnel kiln firing temperature control, has deeply focused on the R&D and application of tunnel kiln combustion systems. Transitioning from a thermal expert in traditional building materials tunnel kiln firing to a highly compatible tunnel kiln combustion system supplier for lithium battery anode materials, Brictec provides customized, efficient, stable, and cost-reducing tunnel kiln solid fuel burner solutions for lithium battery synthetic graphite precursor firing and carbonization enterprises. I. Corporate Strength: From Building Materials Thermal Benchmark to New Force in Lithium Battery Thermal Technology Founded in 2011, Brictec integrates senior Italian engineers and top domestic technical experts, combining cutting-edge European thermal concepts with a mature tunnel kiln burner manufacturing system to establish a complete industrial chain covering R&D, design, manufacturing, and full life-cycle services. The company has deeply cultivated the field of tunnel kiln thermal equipment and drying processes for over a decade. Its core technologies cover key areas such as multi-fuel efficient combustion, precise temperature control, atmosphere protection, and kiln pressure control. Its product portfolio has expanded from traditional building materials sintering to high-end new material fields including lithium battery anode materials, carbon materials, and new energy minerals. Particularly in the high-temperature carbonization and calcination of synthetic graphite anodes, Brictec has formed unique technical barriers and application advantages. With project implementation experience in over 30 countries and regions, along with a localized service network, Brictec has become a trusted core partner for tunnel kiln burners among domestic and international lithium battery enterprises. Driven by the core values of “leading technology, stable reliability, cost reduction and efficiency enhancement," Brictec helps anode material manufacturers overcome thermal bottlenecks. II. Core Technology: Specifically Customized for Anode Carbonization, Five Technical Advantages Leading the Industry Addressing the high-temperature, continuous and stable, low-consumption, and environmentally friendly carbonization and calcination requirements of synthetic graphite anode materials, Brictec tunnel kiln burners break through traditional technical limitations, creating five core technical advantages that perfectly match anode production processes: 1. High-Efficiency Combustion Technology: High Fuel Utilization, Significant Cost Reduction Adapts to various fuel characteristics, achieving full and stable combustion. Compared to traditional burners, fuel consumption is reduced by 12%-18%, cutting the largest variable cost in anode production at the source. Precise air-fuel ratio control eliminates “over-temperature idle burning," ensuring 100% of heat acts on material calcination without ineffective energy consumption. Adapts to multiple fuel types, allowing flexible switching based on energy prices to avoid the risk of single fuel price fluctuations. 2. Precise Temperature Control Technology: Uniform Temperature Field Ensuring Batch Consistency Equipped with a PLC-based fully automatic closed-loop temperature control system, linked in real-time with kiln car speed and temperature sensors. Achieves precise temperature control and linear adjustment across the entire kiln section, with uniform temperature distribution, ensuring consistent carbonization and performance of anode materials. Unmanned intelligent adjustment replaces manual operation, avoiding process fluctuations caused by human error and improving product yield. 4. Long-Life Design: Continuous Operation, Reduced Operation and Maintenance Costs Designed for high-temperature and demanding conditions of anode carbonization, using high-temperature alloy composite burners. Continuous service life is 2-3 times that of ordinary burners, significantly extending replacement cycles and reducing equipment procurement and maintenance frequency. Standardized quick-change design for wear parts, reducing replacement time to 1-2 hours, avoiding capacity loss due to prolonged downtime. Fully sealed structure reduces fuel waste and calcination loss, indirectly achieving cost reduction and efficiency enhancement. III. Full-Process Service: More Than Equipment, Providing Systematic Thermal Solutions Brictec understands that the stable and efficient production of lithium battery anode carbonization relies on deep integration of equipment, process, and service. Leveraging over a decade of tunnel kiln burner thermal project experience, the company provides customers with full life-cycle services from solution design to long-term operation and maintenance: Customized Solution Design Tailors burner system solutions one-on-one based on customer’s anode material production capacity, process parameters, fuel type, and kiln specifications, ensuring perfect matching with the entire carbonization line to achieve optimal thermal efficiency. Equipment Manufacturing and System Integration Self-develops and manufactures core burner equipment, supporting fully automatic control systems, kiln protection systems, and waste heat recovery systems, achieving seamless integration and intelligent interaction between the combustion system and the tunnel kiln, kiln cars, and conveying lines. Installation, Commissioning, and Process Optimization A professional technical team provides on-site installation and commissioning services, optimizing combustion parameters, atmosphere parameters, and temperature control parameters to ensure rapid production ramp-up and stable operation, while also providing process training to customers. IV. Project Cases: Empowering Lithium Battery Anodes with Remarkable Results Brictec tunnel kiln burners have been successfully applied to high-temperature carbonization projects in tunnel kilns of multiple domestic lithium battery anode material enterprises. With stable performance and significant cost reduction effects, they have gained high recognition from customers: Fujian Lithium Battery New Material Project: GCS series burners operate stably, achieving the contracted product yield rate. Large-Scale Anode Material Production Line: The combustion system interacts intelligently with the tunnel kiln, reducing 2-3 on-site operator positions, saving over 800,000 RMB annually in labor and operation/maintenance costs. V. Core Reasons to Choose Brictec Deep Technical Foundation: European technology + Chinese smart manufacturing, over a decade of tunnel kiln expertise customized for anode carbonization. Significant Cost Reduction: High-efficiency combustion + long service life. Reliable Quality Assurance: Fully sealed design + precise temperature control, high product yield, eliminating quality risks. Comprehensive Service System: Full-process customized services, global localized support, no worries. Brictec, rooted in industrial tunnel kiln core thermal technology and guided by the carbonization needs of lithium battery anode materials, is committed to becoming the most trusted tunnel kiln burner expert for lithium battery enterprises. Looking ahead, Brictec will continue to innovate, providing more efficient, stable, and economical thermal equipment solutions for the high-quality development of the new energy industry, and work together with customers to create a new future for the lithium battery industry.

2026

03/31

Brictec Drying Car Technical Standards for Fired Brick Production Lines

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"Galvanized anti-corrosion standards are a key quality indicator" for drying cars. "Stability of the automation system" for drying cars is one of the critical factors determining the efficiency and quality of high-end automated brick plants. In modern clay sintered brick production lines, the drying car (also referred to as dryer car) serves as an important conveying and supporting equipment linking the forming and firing processes. Its structural design and manufacturing quality directly affect the drying uniformity of green bricks, production efficiency, and equipment service life. Common types of drying cars currently used in the industry primarily include: Steel structure drying car Cast iron drying car As brick plants move towards high automation, long service life, and low maintenance, the manufacturing process for drying cars has gradually developed into a systematic quality control standard. Brictec, drawing on international advanced experience, proposes the following technical requirements for the design and manufacturing of drying cars. I. Structural Design Principles of Drying Cars 1.1 Structural Strength and Stability Design Drying cars are subjected to the following during operation: Load from multi-layer green bricks Thermal stress effects (temperature cycling) Long-term operational fatigue Therefore, the structural design must meet the following requirements: Utilize high-strength steel sections or composite structural frames Perform finite element analysis (FEA) for strength verification on key load-bearing areas Prevent structural deformation or sagging over prolonged use 1.2 Structural Form Selection (Comparison of Different Materials) Steel Structure Drying Car (Traditional) Features: High strength, mature manufacturing process Application: Multi-layer stacking, hollow brick production lines Cast Iron Drying Car Features: Excellent corrosion resistance Strong resistance to thermal deformation Good thermal stability Advantages: Better suited for high-temperature flue gas drying systems Long service life Application: Utilizing kiln waste heat for drying High-end automated brick plants II. Thermal Performance Design Requirements for Drying Cars 2.1 Heat Transfer Performance Control Drying car design must balance: Uniform heating of upper and lower brick layers Stability of drying rate Key control points: Matching thermal conductivity of the car deck material Avoiding localized overheating or cold spots Ensuring uniform hot air flow through the brick layers 2.2 Multi-Layer Stacking Compatibility Design When producing hollow bricks or low-strength green bricks: intermediate partition plates must be installed, typically dividing into 2–3 layers. Design requirements: Sufficient strength of partition plates Ensuring ventilation gaps Avoiding localized pressure deformation III. Corrosion Protection and Surface Treatment Processes for Drying Cars 3.1 Galvanized Anti-Corrosion Standard (Key Quality Indicator) For brick plant equipment, drying cars typically employ: Hot-dip Galvanizing Recommended technical standards: Galvanized coating thickness: ≥ 80–120 μm For highly corrosive environments (high humidity + high temperature): Recommended ≥ 120 μm Process requirements: Surface sandblasting (Sa2.5 standard), uniform coating without missed spots, no blistering, peeling, or cracks 3.2 High-Temperature Protection Design For high-temperature drying systems: key components require heat-resistant coatings to prevent oxidation and thermal fatigue. Optional processes: Silicone heat-resistant coating, high-temperature anti-corrosion paint. IV. Operating System and Track Matching Standards 4.1 Gauge and Wheel Track Design Industry standards: Wheel track: 610 mm; Rail gauge: 600 mm; Rail specification: 8 kg/m Design requirements: Reasonable wheel-rail clearance, ensuring stable operation without deviation 4.2 Wheel and Bearing System Quality control focus: Adoption of high-temperature resistant bearing structures Dust-proof bearing seal design Wheel materials must possess: Wear resistance Thermal fatigue resistance Impact resistance V. Manufacturing Processes and Quality Control System 5.1 Welding Process Standards Key structural welds use CO₂ gas shielded arc welding. Welds undergo: Non-destructive testing (UT / MT) to prevent cracks and porosity. 5.2 Dimensional Accuracy Control Key control points: Car deck flatness, consistency of wheel gauge, diagonal tolerance of the frame, ensuring that drying cars do not deviate or wobble during long-distance operation. 5.3 Factory Testing Standards Prior to delivery, Brictec drying cars must undergo: Static load testing Dynamic operational testing Anti-corrosion coating inspection VI. Advantages of Brictec Drying Car Systems Combining international standards with engineering practice, Brictec drying cars offer the following advantages: (1) Structural Advantages High-strength modular design Strong resistance to deformation Adaptable to various brick types (2) Thermal Advantages Uniform drying Reduced cracking and deformation Improved product yield (3) Durability Advantages High-standard galvanized anti-corrosion Suitable for high-temperature and high-humidity environments Long service life (4) Operational Advantages Smooth operation Low maintenance costs Suitable for automated production lines VII. Brictec Point of View As a critical piece of equipment in sintered brick production lines, the design and manufacturing quality of drying cars directly affect: Drying quality of green bricks Production efficiency Equipment operational stability By introducing advanced manufacturing concepts, Brictec systematically optimizes structural design, thermal performance matching, anti-corrosion processes, and manufacturing standards, resulting in a high-performance drying car system tailored for modern brick plants. This system effectively meets the comprehensive demands of high-end brick plants for: High efficiency Low energy consumption Long service life Automated operation

2026

03/30

Tunnel Kiln Solid Fuel Burner System Provides Integrated Solution for Cost Reduction and Efficiency Enhancement

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Recently, a significant milestone was achieved in a graphite precursor and lithium-ion battery anode material project — the tunnel kiln solid fuel burner has completed installation and commissioning, officially entering the pre-ignition preparation phase. This project utilizes needle coke, natural graphite, and asphalt as primary raw materials to produce lithium-ion battery anode materials, while also using natural flake graphite to produce graphite precursors. It stands as a strategically positioned new energy material project in the region. Within the overall process, the carbonization step serves as a core stage, exerting a decisive influence on the thermal system's stability, temperature control precision, and energy consumption levels. The tunnel kiln represents the most critical high-energy-consumption equipment in this process. Industry Challenge: The difficulty of balancing high energy consumption with stability. In traditional lithium-ion battery anode material calcination processes, several common issues persist: Suboptimal fuel utilization efficiency, leading to high overall energy consumption. Uneven temperature distribution within the kiln, affecting product consistency. Insufficient operational stability of equipment, increasing maintenance costs and the risk of production stoppages. These issues directly impact production costs and product quality for manufacturers, acting as significant constraints on further industry-wide efficiency improvement and cost reduction. Solution: Customized Tunnel Kiln Solid Fuel Burner System To address the challenges mentioned above, this project has introduced a tunnel kiln solid fuel burner solution provided by Brictec. This system is specifically designed based on the characteristics of the carbonization process for lithium-ion battery anode materials, focusing on enhancing combustion efficiency and system stability. In terms of fuel adaptability, the burner efficiently utilizes solid fuel, achieving complete combustion and minimizing energy waste. Regarding structural design, it effectively improves temperature uniformity within the kiln, ensuring the stability of the calcination process for both graphite precursors and anode materials. Additionally, the system incorporates enhanced energy-saving control features, contributing to a reduction in energy consumption per unit of product, thereby addressing production costs at the source. Key Milestone: Installation and Testing Completed, Entering Ignition Phase Following continuous construction and systematic commissioning, the tunnel kiln solid fuel burner has now completed all installation and testing work, with all operational indicators meeting the predetermined requirements. The equipment operates smoothly overall, and the control system responds as expected, confirming readiness for ignition. Upon completion of ignition, the equipment will proceed to the actual production validation phase. This also marks a crucial step in the project's transition from the construction phase towards commissioning and operation. Expected Outcomes: Driving Cost Reduction, Quality Improvement, and Scalable Production Reduce energy consumption in the carbonization process, optimizing the overall production cost structure. Enhance temperature control precision within the kiln, improving product consistency and quality stability. Increase equipment operational reliability, minimizing unplanned downtime. Provide a stable foundation for subsequent capacity ramp-up. Against the current backdrop of intensifying competition in the new energy materials sector, such technological optimizations focused on core processes will serve as crucial levers for enhancing corporate competitiveness. The successful completion of installation and testing for the tunnel kiln solid fuel burner underscores the critical value of thermal equipment in lithium-ion battery material manufacturing. With the advancement of the ignition process and subsequent stable operation, the project is poised to further unlock its production capacity, offering a more competitive anode material solution for the lithium-ion battery industry supply chain. Brictec is a specialized manufacturer focused on the production of tunnel kiln burners. Its diverse product range includes natural gas burners, heavy oil burners, and solid fuel burners. Leveraging deep-seated technical expertise and an exceptional level of craftsmanship in the field of burner manufacturing, Brictec's products are renowned for their superior performance and high stability, earning widespread application across various industrial sectors.

2026

03/27

Research on Optimization Design and Performance Enhancement of Vacuum Extruders

.gtr-container-k9m2p1 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 15px; margin: 0 auto; max-width: 100%; overflow-x: hidden; } .gtr-container-k9m2p1 p { margin-bottom: 15px; text-align: left !important; font-size: 14px; } .gtr-container-k9m2p1 strong { font-weight: bold; } .gtr-container-k9m2p1 .gtr-title { font-size: 18px; font-weight: bold; color: #C90806; margin-bottom: 20px; line-height: 1.4; } .gtr-container-k9m2p1 .gtr-section-title { font-size: 18px; font-weight: bold; color: #C90806; margin-top: 30px; margin-bottom: 15px; line-height: 1.4; } .gtr-container-k9m2p1 .gtr-subsection-title { font-size: 14px; font-weight: bold; margin-top: 20px; margin-bottom: 10px; line-height: 1.4; } .gtr-container-k9m2p1 ul, .gtr-container-k9m2p1 ol { margin: 0 0 15px 20px; padding: 0; list-style: none !important; } .gtr-container-k9m2p1 li { position: relative; padding-left: 20px; margin-bottom: 8px; font-size: 14px; text-align: left !important; list-style: none !important; } .gtr-container-k9m2p1 ul li::before { content: "•" !important; position: absolute !important; left: 0 !important; color: #C90806; font-size: 16px; line-height: 1; } .gtr-container-k9m2p1 ol { counter-reset: list-item; } .gtr-container-k9m2p1 ol li::before { content: counter(list-item) "." !important; position: absolute !important; left: 0 !important; color: #333; font-weight: bold; width: 18px; text-align: right; } .gtr-container-k9m2p1 img { margin: 20px 0; } @media (min-width: 768px) { .gtr-container-k9m2p1 { padding: 25px 50px; } } Research on Optimization Design and Performance Enhancement of Vacuum ExtrudersBased on Engineering Practice of Structural Improvement of Dual-Stage Vacuum Extruders In a fired brick production line, the clay fired brick vacuum extruder is the core shaping equipment that determines the quality of green bricks and production efficiency. With the brick and tile industry's increasing demands for product quality, output, and equipment reliability, structural optimization and technological upgrading of vacuum extruders have become particularly important.By researching and analyzing various vacuum extruder equipment developed domestically and internationally, and combining the advanced technical experience of different manufacturing enterprises, a systematic optimization design of key structures is carried out while ensuring equipment performance. By selecting technologically mature and economically reasonable supporting components, equipment functionality is enhanced while effectively reducing manufacturing costs, thereby achieving a comprehensive improvement in both equipment performance and economy. I. Optimization Design of Key Components 1.1 Auger Shaft (Main Shaft) Structure Optimization The auger shaft is the core transmission component of the vacuum extruder. Its main function is to transmit power and push the clay mixture forward, while simultaneously bearing significant torque and axial pressure. Therefore, the structural design of the auger shaft directly affects the overall stability and reliability of the machine.In the original vacuum extruder structure, the diameter of the auger shaft at the bearing positions was Φ170 mm, and it utilized three bearings for support (including one thrust bearing). However, during actual operation, this structure presented the following problems:• Relatively small center distance between the front and rear bearings• Relatively long cantilevered section of the auger shaft• Significant deflection of the shaft during operationThis structure tended to cause noticeable shaking of the extruder head during operation (commonly known as the "head shaking" phenomenon). Excessive or prolonged shaking not only affects the operational stability of the equipment but can also lead to component damage and even production shutdowns. According to mechanical theory analysis:Assume the distance from the front bearing center of the auger shaft to the front end of the auger is L₁Assume the center distance between the front and rear bearings is L₂When the following condition is met:L₂ / L₁ ≥ 0.7the auger shaft can maintain good operational stability.In the original equipment structure:L₂ / L₁ = 1040 / 1950 = 0.533This is significantly below the reasonable design range, thus indicating a structural design deficiency. 1.2 Structural Improvement Scheme During the optimization design process, the key transmission structure was adjusted to achieve a more rational auger shaft configuration.Main measures included:• Changing the original radial pneumatic clutch to an axial pneumatic clutch• Reducing the axial installation dimensions of the clutch• Moving the auger shaft bearing housing rearward Through the above optimizations:The center distance between the front and rear bearings increased by approximately 400 mm.Under the new structure:L₂ / L₁ = (1040 + 400) / 1950 = 0.74This ratio now meets the requirements for stable operation, making the auger shaft run more smoothly and reliably.Due to the increased structural rigidity, the auger shaft diameter could also be optimized accordingly:Original maximum shaft diameter: Φ185 mmOptimized bearing section diameter: Φ150 mmMaximum shaft diameter: Φ160 mmAfter structural optimization:• The shaft weight is significantly reduced• The mechanical structure is more rational• Manufacturing difficulty is decreased Simultaneously, the dimensions of bearings and related components were also reduced, making the entire auger shaft system more compact. II. Pneumatic Clutch System Optimization In the original equipment design, a radial pneumatic clutch was used as the power connection device. This structure had the following disadvantages:• Complex structure• Large footprint• High requirements for installation and commissioning• Strict requirements for equipment alignment accuracy The radial pneumatic clutch required precise alignment with the reducer via a coupling and needed additional support structures, making installation and maintenance more complex.In the optimization design, all radial clutches were replaced with axial pneumatic clutches, installed directly on the high-speed shaft of the reducer.This structure offers the following advantages:• More compact structure• Easier to ensure installation accuracy• More convenient commissioning and maintenance• Significantly reduced equipment weight• Lower requirements for the compressed air systemThrough this improvement, not only was the operational reliability of the equipment enhanced, but the overall transmission structure also became simpler. ​ III. Enhancement of Equipment Production Capacity The original dual-stage vacuum extruder suffered from relatively low output in practical use. Technical analysis identified the main reasons as:• Insufficient feeding capacity from the upper stage• Excessive compression ratio in the tapered cavity• Relatively low conveying speed in the upper stage Compression ratio of the original equipment's tapered cavity:λ = 2.6This value was close to the upper limit of the design allowable range.The typical reasonable range is:λ = 2.0 – 2.6An excessively large taper reduces the conveying speed of the clay mixture, decreasing the amount of material entering the vacuum chamber per unit time, thus limiting the overall machine output.In the optimization design, by adjusting the structural dimensions of the inner and outer tapered sleeves, the compression ratio was optimized to:λ = 2.3Furthermore, due to the replacement with the axial clutch, the rotational speed of the upper stage was appropriately increased, significantly enhancing the clay conveying capacity.After optimization:The amount of clay mixture entering the vacuum chamber per unit time increased by approximately 22%.The production capacity of the new dual-stage vacuum extruder improved by about 25% compared to the original model. IV. Structural Lightweighting and Manufacturing Optimization During the overall equipment optimization process, systematic improvements were made to several structural components to enhance manufacturing efficiency and structural rationality. 4.1 Structural Weight Optimization While ensuring equipment strength and performance, structural optimization was carried out on the following key components:• Feeding box• Vacuum chamber• Machine body structureBy optimizing casting structures and machining processes, the overall weight of the equipment was significantly reduced, while processing efficiency was improved. 4.2 Standardization of Component Design In the original equipment design, some auxiliary components such as:• Filters• Motor slide rails• Lighting systems• Vacuum chamber inspection doors• Varied in structure across different equipment models. In the optimization design, by implementing standardized component design, the following goals were achieved:• Utilizing unified structural parts for different equipment models• Making only appropriate dimensional adjustments• Establishing a system of internal enterprise standard parts This measure brought significant production advantages:• Reduction in the variety of parts• Increased batch production capability• Enhanced processing efficiency• Reduced manufacturing complexity V. Effects of Optimization Design Structure• More compact equipment structure• More rational transmission system• Increased standardization of components Performance• More stable operation of the auger shaft• Significantly improved production capacity• Enhanced equipment operational reliability Manufacturing• Optimized equipment weight• Improved processing and manufacturing efficiency• More rational overall structure In summary, the optimization design has not only elevated the equipment's technical level but also improved production efficiency and equipment reliability, enabling the vacuum extruder to deliver greater value in brick production lines.

2026

03/19

Brictec Tunnel Kiln Burners: Reducing Costs and Boosting Efficiency for Artificial Graphite Anode Carbonization

.gtr-container-f7a3b9 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 15px; box-sizing: border-box; } .gtr-container-f7a3b9 p { margin: 0 0 15px 0; text-align: left !important; font-size: 14px; word-wrap: break-word; } .gtr-container-f7a3b9 .gtr-main-title { font-size: 18px; font-weight: bold; color: #C90806; margin-bottom: 20px; text-align: left !important; } .gtr-container-f7a3b9 .gtr-section-title { font-size: 16px; font-weight: bold; color: #C90806; margin-top: 25px; margin-bottom: 15px; text-align: left !important; } .gtr-container-f7a3b9 ul { list-style: none !important; padding-left: 20px; margin: 0 0 15px 0; } .gtr-container-f7a3b9 ul li { position: relative; padding-left: 15px; margin-bottom: 8px; font-size: 14px; text-align: left !important; list-style: none !important; } .gtr-container-f7a3b9 ul li::before { content: "•" !important; position: absolute !important; left: 0 !important; color: #C90806; font-size: 14px; line-height: 1.6; } .gtr-container-f7a3b9 .gtr-image-wrapper { margin: 20px 0; text-align: center; } @media (min-width: 768px) { .gtr-container-f7a3b9 { padding: 25px 50px; } .gtr-container-f7a3b9 .gtr-main-title { font-size: 18px; } .gtr-container-f7a3b9 .gtr-section-title { font-size: 18px; } } Cut Costs, Boost Efficiency, and Stabilize Production: Brictec Burners Save "Real Money" for Artificial Graphite Anode Carbonization In the high-temperature carbonization and calcination stage of artificial graphite anode materials, cost control directly determines an enterprise’s market competitiveness. Every instance of waste — from fuel consumption and equipment wear to finished-product scrap — accumulates into a heavy operational burden. Brictec tunnel kiln burners are specifically engineered for the high-temperature carbonization conditions of artificial graphite anodes. With five core cost advantages, they deliver visible, quantifiable cost reduction and efficiency gains for lithium battery anode producers, while balancing economic performance and regulatory compliance, helping enterprises seize a decisive cost advantage in fierce competition. Core Advantage One: High-Efficiency Combustion – Directly Reducing Fuel Costs Fuel expense is the largest variable cost in anode carbonization production. Traditional burners suffer from incomplete combustion and low thermal efficiency, resulting in substantial energy waste. Brictec tunnel kiln burners adopt fully pre-mixed, enclosed, automated high-efficiency combustion technology tailored to the combustion characteristics of low-cost solid fuels, achieving significantly higher fuel utilization and reducing consumption at the source: Adaptable to a variety of low-cost solid fuels and mixed fuels, allowing flexible switching based on regional energy prices and supply conditions to lock in fuel cost advantages and mitigate risks from single-fuel price volatility; Precise temperature control prevents overheating and eliminates ineffective energy consumption caused by “over-temperature idling,” ensuring every unit of heat is applied directly to material calcination and maximizing fuel value. Core Advantage Two: Long-Service-Life Design – Significantly Reducing Equipment Operation & Maintenance Costs Frequent shutdowns for maintenance and component replacement not only incur direct procurement costs but also cause production losses due to downtime — a “hidden cost killer” for anode manufacturers. Targeting the harsh conditions of solid-fuel combustion, our burners feature high-temperature-resistant composite heads and a modular structure, perfectly suited to complex combustion environments and greatly enhancing equipment stability: Continuous operating life is 2–3 times longer than conventional burners, substantially extending replacement intervals, reducing procurement frequency, and lowering core component replacement costs; Standardized wear-part design shortens replacement time to just 1–2 hours, preventing prolonged downtime that delays orders and wastes capacity, while ensuring 24-hour continuous production line operation; Fully sealed structure minimizes heat leakage inside the kiln, reduces wear on the kiln insulation layer, and decreases abrasion from combustion residues, indirectly extending the overall service life of the tunnel kiln and lowering total equipment O&M costs. Core Advantage Three: Zero-Leakage Oxygen Protection – Eliminating Finished-Product Scrap Costs at the Source Oxidation of anode materials at high temperatures is the “cost black hole” most feared by enterprises. Brictec burners employ a fully sealed, leak-proof structure to safeguard material quality: Effectively isolates impurities and air infiltration during combustion, raising the yield rate of finished anode materials and completely eliminating extreme risk; Reduces rework and sorting costs caused by quality fluctuations, ensuring every batch meets the performance standards of downstream battery manufacturers and preventing capital tie-up from scrap accumulation; Avoids brand damage to customers caused by oxidation or excessive impurities, protecting long-term market reputation and lowering brand maintenance costs. Core Advantage Four: Automated Interlocking Control – Reducing Labor and Management Costs Traditional burners rely on manual flame adjustment, especially with solid fuels, where regulation is difficult and prone to error. This not only lowers efficiency but also introduces process fluctuations that increase management complexity. Brictec burners support full PLC automated control, fully adapted to solid-fuel combustion process requirements: Real-time linkage with kiln car speed and temperature sensors enables unmanned, precise temperature control and combustion load adjustment, cutting 2–3 on-site operator positions and significantly reducing labor and management expenses; Stable process parameters ensure batch-to-batch consistency, reducing the frequency of quality inspections and lowering management costs for quality testing and data traceability. Choosing Brictec tunnel kiln burners is not merely purchasing a set of high-efficiency equipment adapted to artificial graphite anode carbonization — it is introducing a sustainable cost-optimization solution for the entire anode carbonization production process. By balancing combustion efficiency, equipment stability, and economic value, Brictec enables enterprises to achieve “cost reduction without quality compromise, efficiency gains with quality improvement,” building a solid cost barrier in the highly competitive new-energy market.

2026

03/17

Brictec Iraq KTB Fired Brick Production Line EPC Project Construction Progresses Smoothly in February 2026

.gtr-container-f7h9j2k5 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 15px; margin: 0 auto; max-width: 100%; box-sizing: border-box; } .gtr-container-f7h9j2k5 p { font-size: 14px; margin-bottom: 15px; text-align: left; word-break: normal; overflow-wrap: normal; } .gtr-container-f7h9j2k5 .gtr-title { font-size: 18px; font-weight: bold; color: #0000FF; margin-bottom: 20px; text-align: left; } .gtr-container-f7h9j2k5 .gtr-subtitle { font-size: 16px; font-weight: bold; color: #0000FF; margin-top: 25px; margin-bottom: 10px; text-align: left; } .gtr-container-f7h9j2k5 ol { margin: 0 0 15px 0; padding: 0; list-style: none !important; } .gtr-container-f7h9j2k5 ol li { list-style: none !important; position: relative; padding-left: 30px; margin-bottom: 10px; font-size: 14px; text-align: left; display: list-item; } .gtr-container-f7h9j2k5 ol li::before { content: counter(list-item) "." !important; position: absolute !important; left: 0 !important; top: 0; width: 25px; text-align: right; font-weight: bold; color: #0000FF; } .gtr-container-f7h9j2k5 img { margin-bottom: 15px; } @media (min-width: 768px) { .gtr-container-f7h9j2k5 { max-width: 960px; padding: 20px; } .gtr-container-f7h9j2k5 .gtr-title { font-size: 24px; } .gtr-container-f7h9j2k5 .gtr-subtitle { font-size: 18px; } .gtr-container-f7h9j2k5 p { margin-bottom: 20px; } .gtr-container-f7h9j2k5 ol li { margin-bottom: 12px; } } Brictec Iraq KTB Fired Brick Production Line EPC Project Construction Progresses Smoothly in February 2026 I. Project Introduction: The Brictec Iraq KTB Fired Brick Production Line EPC Project, launched in 2025, is advancing steadily according to plan. As the company’s second major engineering project in the Middle East market, it plans to construct three modern tunnel kiln fired brick production lines, to be implemented in three phases. Upon completion and commissioning of Phases I and II, the total daily output is expected to reach 900 tons. The lines will primarily produce 240×115×75 mm specification clay fired bricks, supplying high-quality fired brick products to Iraq’s construction industry. II. Project Construction Progress: As of February 2026, the project site has achieved significant construction milestones: Core equipment installation is progressing in an orderly manner: All strip and blank cutting machines have been positioned, laying a solid foundation for subsequent automated blank-forming processes; Kiln car manufacturing has been completed efficiently: 70 kiln cars have finished welding and assembly, providing reliable transportation support for the tunnel kiln firing section; Tunnel kiln and supporting system construction are accelerating: The main structure of the on-site tunnel kiln and the exhaust flue system are under construction. Workers are actively carrying out steel structure installation, equipment hoisting, and welding operations, while track laying inside the factory building and equipment positioning proceed in parallel. The Brictec on-site project team is operating with high efficiency and seamless collaboration: Large hoisting equipment has precisely positioned heavy machinery, welding personnel are focused on splicing steel structures and kiln car components, and all processes are tightly coordinated. This fully demonstrates the efficient advantages of the integrated design-procurement-construction model under the EPC general contracting approach. Leveraging its mature EPC construction experience in fired brick production lines, Brictec continues to provide full-process technical and engineering services for the Iraq KTB project, supporting the local building materials industry in its transition toward modernization and large-scale production. With construction progressing steadily, the project is expected to reach early commissioning and deliver results, becoming a model project for China-Iraq capacity cooperation and building materials technology export.

2026

03/13

Causes and Non-Disassembly Correction of Bent Extruder Auger Shaft

.gtr-container-d9e2f1 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 15px; max-width: 100%; box-sizing: border-box; } .gtr-container-d9e2f1 p { font-size: 14px; margin-bottom: 1em; text-align: left !important; word-break: normal; overflow-wrap: normal; } .gtr-container-d9e2f1 .gtr-title-main { font-size: 18px; font-weight: bold; margin-bottom: 1.5em; color: #0000FF; text-align: left; } .gtr-container-d9e2f1 .gtr-section-heading { font-size: 16px; font-weight: bold; margin-top: 2em; margin-bottom: 1em; color: #333; text-align: left; } .gtr-container-d9e2f1 .gtr-sub-section-heading { font-size: 14px; font-weight: bold; margin-top: 1.5em; margin-bottom: 0.8em; color: #555; text-align: left; } .gtr-container-d9e2f1 .gtr-divider { border-top: 1px solid #eee; margin: 2em 0; } .gtr-container-d9e2f1 ul { list-style: none !important; padding-left: 20px; margin-bottom: 1em; } .gtr-container-d9e2f1 ul li { position: relative; padding-left: 15px; margin-bottom: 0.5em; font-size: 14px; text-align: left !important; list-style: none !important; } .gtr-container-d9e2f1 ul li::before { content: "•" !important; color: #0000FF; position: absolute !important; left: 0 !important; font-size: 1.2em; line-height: 1; } .gtr-container-d9e2f1 ol { list-style: none !important; padding-left: 25px; margin-bottom: 1em; counter-reset: list-item; } .gtr-container-d9e2f1 ol li { position: relative; padding-left: 15px; margin-bottom: 0.5em; font-size: 14px; text-align: left !important; list-style: none !important; } .gtr-container-d9e2f1 ol li::before { content: counter(list-item) "." !important; color: #0000FF; position: absolute !important; left: 0 !important; font-weight: bold; width: 20px; text-align: right; } .gtr-container-d9e2f1 .gtr-image-wrapper { margin: 2em 0; } @media (min-width: 768px) { .gtr-container-d9e2f1 { padding: 30px 50px; max-width: 960px; margin: 0 auto; } .gtr-container-d9e2f1 .gtr-title-main { font-size: 24px; } .gtr-container-d9e2f1 .gtr-section-heading { font-size: 20px; } .gtr-container-d9e2f1 .gtr-sub-section-heading { font-size: 16px; } } Causes and Non-Disassembly Correction of Bent Extruder Auger Shaft Maintenance Guide for Brick and Tile Production Equipment In clay fired brick production lines, the extruder is the core forming equipment, while the auger shaft is one of the most critical transmission components within the extruder. The auger shaft is responsible for transmitting most of the torque generated during operation and for conveying clay materials forward under pressure. Therefore, its operating condition directly affects the forming quality of green bricks as well as the operational stability of the equipment. During long-term production, due to complex raw material conditions and variations in equipment load, bending or deformation of the auger shaft is a relatively common mechanical problem. If not addressed promptly, it may lead to abnormal equipment operation, mechanical damage, or even production shutdown. Based on practical maintenance experience in the brick and tile industry, this paper introduces a practical on-site correction method that does not require disassembling the extruder, which is especially suitable for small and medium-sized brick factories with limited maintenance capability. 1. Structural Characteristics of the Extruder Auger Shaft The auger shaft is a key transmission component inside the extruder and has the following structural characteristics. High Torque Transmission During the extrusion process, the auger shaft continuously transmits mechanical power while pushing the clay material toward the die head. Tangential Key Slots In order to mount the auger blades, the shaft is usually designed with two tangential keyways. Although this structure facilitates blade installation, compared with a solid shaft of the same diameter, its bending strength and torsional strength are relatively reduced. Material and Manufacturing Characteristics In traditional brick machinery manufacturing, due to equipment limitations, many auger shafts do not undergo quenching and tempering heat treatment. According to general mechanical manufacturing standards, transmission shafts that do not undergo proper heat treatment tend to have lower fatigue resistance and impact strength, which increases the possibility of deformation during long-term operation. 2. Main Causes of Auger Shaft Bending In practical brick production, the bending of the extruder auger shaft is mainly caused by the following factors. 2.1 Variation in Raw Material Properties Raw material conditions vary significantly among different brick factories, such as: Differences in plasticity index Fluctuations in moisture content Unstable particle size distribution These factors cause significant fluctuations in the operating load of the extruder, resulting in periodic alternating torque on the auger shaft. 2.2 Poor Raw Material Processing If the raw material is not properly processed, it may contain: Stones Metal fragments Hard impurities When these foreign objects enter the extruder, they generate instantaneous impact loads, which may cause bending or even twisting of the auger shaft. 2.3 Changes in Product Specifications When producing different types of bricks, such as: Perforated bricks Insulated hollow blocks Standard clay bricks the extrusion pressure varies significantly, which imposes different levels of mechanical load on the auger shaft. 2.4 Long-Term High Load Operation Extruders are typically continuous production equipment. Long-term operation under high load conditions accelerates the fatigue deformation of the auger shaft. 3. Typical Symptoms of Auger Shaft Bending When the auger shaft becomes bent, the following phenomena usually occur: Significant increase in die head oscillation Fluctuation in extrusion pressure Local friction between the auger and the barrel liner Increased vibration and noise of the equipment In severe cases, the auger blades may directly collide with the barrel lining, posing a serious threat to equipment safety. It should be noted that: Bending of the auger shaft can be corrected, but torsional deformation cannot be repaired without disassembly and replacement. 4. Non-Disassembly Correction Method for Extruder Auger Shaft For brick factories with limited financial resources or maintenance capability, on-site flame straightening can be used to repair the shaft. The specific procedure is as follows. Step 1: Remove the Auger Blades All auger blades mounted on the shaft must be removed so that the shaft body is completely exposed. Step 2: Determine the Bending Position Manually rotate the auger shaft and use a scriber or dial indicator to determine: The highest bending point The lowest bending point The center of the bending position These locations should be clearly marked. In most cases, bending occurs near the root of the front bearing. Step 3: Bearing Protection To prevent damage to the bearings during heating, protective measures should be taken: Wrap asbestos rope around the shaft at the bottom of the feed box Apply wet clay material outside the asbestos layer This insulation prevents heat from transferring to the bearing and avoids bearing annealing. Step 4: Shaft Support Place the following support tools under the bending position: Steel shims V-shaped support blocks This ensures that the bearings will not be damaged during the correction process. Step 5: Flame Heating and Straightening Use an oxy-acetylene flame to heat the bent section of the shaft evenly. Once the shaft surface reaches a uniform red-hot state, strike the far end of the shaft using an approximately 18-pound hammer to gradually correct the shaft alignment. During the process, continuously check the shaft alignment with a measuring tool to prevent overcorrection. After correction, the acceptable tolerance is: Auger shaft bending ≤ 1 mm which is sufficient for normal extruder operation. 5. Heat Treatment Reinforcement After Correction Flame straightening may reduce the fatigue strength of the heated area. Therefore, local surface hardening treatment is recommended. Procedure Heat the shaft surface using an oxy-acetylene flame Heating temperature: 830–850°C Rapidly cool the heated area with water Utilize the internal heat of the shaft for tempering Tempering Color Changes During tempering, the surface color typically changes as follows: White → Yellow → Blue When the surface turns blue, immediately cool the shaft with water to stabilize the hardness. Final Requirement The final hardness of the shaft surface should be: ≤ HRC 30 This level ensures sufficient wear resistance while maintaining material toughness. 6. Economic Benefits of On-Site Repair For many small and medium-sized brick factories, replacing an auger shaft is costly. For example: Additional costs include transportation, labor, and downtime losses In many cases, the total economic loss may reach several times the cost of the shaft itself. Using the on-site correction method can: Avoid long production shutdowns Reduce maintenance costs Improve equipment utilization 7. Conclusion Practical experience has proven that on-site flame straightening of a bent extruder auger shaft is an economical, practical, and effective maintenance method. The technique has several advantages: No need to dismantle the equipment Short maintenance time Low repair cost Simple operation For small and medium-sized brick factories with limited maintenance facilities, this method has high practical value and strong potential for industry promotion. Through proper equipment maintenance and scientific repair methods, the service life of key extruder components can be significantly extended, ensuring the stable operation of the brick production line.

2026

03/09

Xi’an Brictec GCS Tunnel Kiln Burners Shipped to Fujian

Xi’an Brictec GCS Tunnel Kiln Burners Shipped to Fujian I. Supporting Green Roasting Production for New Energy Lithium Battery Materials On March 6, 2026, the GCS tunnel kiln burners and fully automatic tubular chain conveyor system, independently developed and manufactured by Xi’an Brictec Machinery Equipment Manufacturing Co., Ltd., were officially dispatched to Fujian. This equipment will be applied to the new energy materials roasting project of Fujian Yongjiu Lithium New Materials Co., Ltd. The shipment will serve the "graphite and carbon materials roasting process" within the new energy new materials sector, providing core thermal equipment that is efficient, stable, and energy-saving for lithium battery material production.   Serving Critical Processes in New Energy Material Roasting With the rapid development of the global new energy industry, the demand for efficient and stable roasting processes for lithium battery materials is constantly increasing. The production line currently being constructed by Fujian Yongjiu Lithium New Materials Co., Ltd. is primarily used for the roasting and processing of new energy battery materials, involving a variety of critical materials, including: • Artificial graphite anode materials • Silicon-carbon anode materials • Hard carbon materials • Ternary cathode materials • Lithium manganese oxide • Lithium cobalt oxide, and other lithium battery cathode materials   The production of these materials requires high-temperature roasting processes in tunnel kilns to achieve structural stabilization and performance enhancement. This places stringent demands on the combustion system's stability, temperature control precision, and energy utilization efficiency. GCS Burner System Facilitates Green Manufacturing Addressing the specific requirements of new energy material roasting processes, the GCS series burner, independently developed by Xi’an Brictec Machinery Equipment Manufacturing Co., Ltd., demonstrates significant advantages in combustion efficiency, stability, and energy utilization. II. This Project Utilizes the Following Supporting Equipment: • 8 GCS tunnel kiln burners • 1 fully automatic tubular chain conveyor system   III. The System Features the Following Technical Characteristics: 1. High Energy Utilization Efficiency: The GCS burner achieves complete fuel combustion and improves thermal efficiency through an optimized combustion structure design, effectively reducing natural gas consumption. 2. Resource Utilization of Waste Materials: The system enables the resourceful reuse of certain production waste materials, reducing energy costs and improving overall economic benefits while ensuring stable combustion. 3. Strong Combustion Stability: The combustion system possesses stable flame control capabilities, meeting the stringent requirements for temperature uniformity and stability during the roasting of new energy materials. 4. High Level of Automation: The supporting fully automatic tubular chain conveyor system enables automated material conveying and continuous feeding, enhancing production efficiency, reducing labor costs, and promoting Green Production of New Energy Materials   The successful shipment of this equipment marks a new breakthrough for Xi’an Brictec in the application of thermal equipment technology within the new energy lithium battery material sector. The GCS burner system not only meets the high standards required for new energy material roasting processes but also, through energy optimization and resource recycling, provides reliable support for new energy material manufacturers to achieve energy savings, consumption reduction, green manufacturing, and intelligent production.   IV. Continuously Supporting the Development of the New Energy Industry Moving forward, Xi’an Brictec Machinery Equipment Manufacturing Co., Ltd. will continue to increase its R&D investment in industrial combustion technology and thermal equipment, actively serving strategic industries such as new energy and new materials. The company is committed to providing customers with more efficient, energy-saving, and environmentally friendly combustion system solutions, contributing to the high-quality development of the new energy industry. Editors: JF & LW 2026.03.06

2026

03/06

Tunnel Drying Chamber Sectional Moisture Exhaust Fan

.gtr-container-x7y2z9 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 0; margin: 0; box-sizing: border-box; border: none; outline: none; } .gtr-container-x7y2z9 * { box-sizing: border-box; } .gtr-container-x7y2z9 p { font-size: 14px; margin: 0 0 15px 0; padding: 0; text-align: left !important; } .gtr-container-x7y2z9 .gtr-title-x7y2z9 { font-size: 18px; font-weight: bold; color: #0000FF; margin-bottom: 20px; text-align: left; } .gtr-container-x7y2z9 .gtr-subtitle-x7y2z9 { font-size: 16px; font-weight: bold; color: #0000FF; margin-top: 20px; margin-bottom: 10px; text-align: left; } .gtr-container-x7y2z9 img { display: block; margin-left: auto; margin-right: auto; max-width: 100%; height: auto; margin-bottom: 15px; } .gtr-container-x7y2z9 ul, .gtr-container-x7y2z9 ol { margin: 1em 0 1em 0; padding-left: 25px; list-style: none; } .gtr-container-x7y2z9 li { list-style: none !important; position: relative; margin-bottom: 0.5em; padding-left: 15px; font-size: 14px; text-align: left; } .gtr-container-x7y2z9 ul li::before { content: "•" !important; position: absolute !important; left: 0 !important; color: #0000FF; font-size: 1.2em; line-height: 1; } .gtr-container-x7y2z9 ol { counter-reset: list-item; } .gtr-container-x7y2z9 ol li { counter-increment: none; list-style: none !important; } .gtr-container-x7y2z9 ol li::before { content: counter(list-item) "." !important; position: absolute !important; left: 0 !important; color: #0000FF; font-weight: bold; width: 20px; text-align: right; line-height: 1; } .gtr-container-x7y2z9 table { width: 100%; border-collapse: collapse !important; border-spacing: 0 !important; margin: 15px auto !important; border: 1px solid #0000FF !important; font-size: 14px; } .gtr-container-x7y2z9 th, .gtr-container-x7y2z9 td { padding: 8px 12px !important; border: 1px solid #0000FF !important; text-align: left !important; vertical-align: middle !important; word-break: normal; overflow-wrap: normal; } .gtr-container-x7y2z9 th { font-weight: bold !important; background-color: rgba(0, 0, 255, 0.05); color: #0000FF; } .gtr-container-x7y2z9 tr:nth-child(even) { background-color: rgba(0, 0, 255, 0.02); } .gtr-container-x7y2z9 .gtr-table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 15px; } @media (min-width: 768px) { .gtr-container-x7y2z9 p { margin-bottom: 20px; } .gtr-container-x7y2z9 .gtr-title-x7y2z9 { font-size: 24px; margin-bottom: 30px; } .gtr-container-x7y2z9 .gtr-subtitle-x7y2z9 { font-size: 20px; margin-top: 25px; margin-bottom: 15px; } .gtr-container-x7y2z9 img { margin-bottom: 20px; } .gtr-container-x7y2z9 ul, .gtr-container-x7y2z9 ol { margin: 1.5em 0 1.5em 0; } .gtr-container-x7y2z9 li { margin-bottom: 0.8em; } .gtr-container-x7y2z9 table { margin: 20px auto !important; } } Tunnel Drying Chamber Sectional Moisture Exhaust Fan In China, some brick and tile plants use a counter-current tunnel dryer powered by waste heat from Hoffmann kilns to dry green bricks, enabling year-round production. The tunnel drying chamber consists of 15 sections and uses one W9-57-101N16B centrifugal fan for centralized heat supply and another fan of the same model for centralized moisture exhaust. This air supply and exhaust arrangement has the following drawbacks: Inconsistent moisture exhaust conditions, resulting in uneven drying of the green bricks. Drying proceeds faster near the exhaust fan and slower farther away. Rapid corrosion of the exhaust fan impeller and casing; one impeller requires replacement in less than one year. Replacement of a new impeller requires at least two days of intensive work, forcing shutdown of the brick machines and drying chambers, while the Hoffman kiln remains in a dormant, fire-stopped production state. To address this issue, the factory drew on experience with axial-flow fans for sectional moisture exhaust. The motor was positioned outside the fan to prevent damage. Accordingly, a 45° cast-iron casing and cast-aluminum blades were designed, with the motor mounted externally on the moisture exhaust fan. After adopting this fan, drying conditions in each tunnel section became uniform, significantly improving drying uniformity and efficiency, reducing power consumption and scrap losses, and eliminating production stoppages for fan maintenance. As shown in Table 6-2, sectional moisture exhaust using this fan offers clear advantages over centralized moisture exhaust.Table 6-2 Comparison Item Unit Centralized Exhaust Sectional Exhaust Comparison between the Two Total Air Volume m³/h 85,000~92,000 106,300~112,200 Increase 18~25% Total Motor Power kW 55 45 Reduction 18% Brick Entry Time min 22 22 Equal Output pcs/double shift 178,200 178,200 Equal Drying Degree % Average 60 Average 85 Increase 25% Scrap Loss % Average 10 Average 3 Reduction 7% In summary, the results of sectional moisture exhaust are highly significant. However, the first-generation moisture exhaust fan still had the following shortcomings: The fan body was relatively bulky; Because the blades were located at the bottom, disassembly and replacement during maintenance were extremely inconvenient; operators had to squat inside the tunnel, where flue gas caused severe choking; Due to the motor being directly sleeved, after prolonged operation the lubricating oil in the bearings leaked out. When oil starvation occurred, the motor was prone to damage. In response to the above issues, a horizontal 90° moisture exhaust fan was subsequently designed (Figure 6-10). After commissioning and trial operation, the results were excellent. Figure 6-10 Schematic Diagram of Moisture Exhaust Fan 1—Electric Motor; 2—Belt Drive; 3—Impeller; 4—Air Outlet; 5—Flange; 6—Air Duct

2026

03/04

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