Customization: | Available |
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Condition: | New |
Automation: | Automatic |
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Project overview:
Malaysia CBT decorative bricks production line project is Brictec's flagship model project in Southeast Asia, designed to produce a daily output of 70,000 decorative bricks (215x100x67mm). Due to the molding shift of 6 days per week, the actual daily output is about 85,000 pieces.
The main project process for decorative bricks production line:The project adopts wet plastic extrusion process, its drying adopts single layer tunnel dryer with support bar recycling, and firing uses external firing tunnel kiln with flat ceiling of lightweight mullite. The operating equipment can be automatically controlled, and the drying chamber and tunnel kiln are centrally controlled.
Xi'an Brictec always adheres to the concept of high standard and strict control, and carries out standardized and real-time comprehensive management over project material, equipment supervision, construction process, delivery process and construction progress.The Importance of Process Design in the Early Stage of Clay Brick Project Planning
1. Process Design Perspective
Process design serves as the project's "blueprint," determining the overall layout and equipment selection. Key considerations include:
Raw material properties (plasticity index, mineral composition)
Product specifications (solid bricks, perforated bricks, etc.)
Capacity coordination (avoiding over/under-capacity issues)
Energy efficiency (integrated thermal system design)
2. Raw Material Processing
Raw material processing directly affects brick quality and equipment longevity:
Crushing size control: Double toothed roll crusher output ≤3mm (oversize reduces plasticity, fines increase energy use)
Aging & homogenization: ≥72 hours aging ensures moisture uniformity and forming stability
Impurity removal: Magnetic separators + screening for iron and stones
3. Aging & Forming
Aging process: Enclosed aging shed with >80% humidity promotes clay ion exchange
Extrusion forming: Vacuum extruder (vacuum ≥-0.092MPa) improves green body density
Die design: L/D ratio ≥4:1 minimizes spiral marks, chrome-plated lips reduce friction
4. Drying Technology
Drying is the most critical pre-sintering stage:
Multi-stage drying:
Preheating (40-60°C, 70% RH) to prevent cracking
Fast drying (80-120°C) for bound water removal
Airflow design: Vertical airflow to keep temperature difference <5°C in stacks
Waste heat recovery: Reuse tunnel kiln cooling zone heat for drying
5. Tunnel Kiln Firing Curve
The firing curve determines brick strength and fuel efficiency:
Preheating zone (200-600°C): Heating rate ≤50°C/hour to prevent explosions
Firing zone (900-1050°C): Hold for 2-4 hours under oxidizing atmosphere
Cooling zone: Slow cooling to <80°C (rapid cooling causes glass-phase cracking)The Importance of Process Design in the Early Stage of Clay Brick Project Planning
1. Process Design Perspective
Process design serves as the project's "blueprint," determining the overall layout and equipment selection. Key considerations include:
Raw material properties (plasticity index, mineral composition)
Product specifications (solid bricks, perforated bricks, etc.)
Capacity coordination (avoiding over/under-capacity issues)
Energy efficiency (integrated thermal system design)
2. Raw Material Processing
Raw material processing directly affects brick quality and equipment longevity:
Crushing size control: Double toothed roll crusher output ≤3mm (oversize reduces plasticity, fines increase energy use)
Aging & homogenization: ≥72 hours aging ensures moisture uniformity and forming stability
Impurity removal: Magnetic separators + screening for iron and stones
3. Aging & Forming
Aging process: Enclosed aging shed with >80% humidity promotes clay ion exchange
Extrusion forming: Vacuum extruder (vacuum ≥-0.092MPa) improves green body density
Die design: L/D ratio ≥4:1 minimizes spiral marks, chrome-plated lips reduce friction
4. Drying Technology
Drying is the most critical pre-sintering stage:
Multi-stage drying:
Preheating (40-60°C, 70% RH) to prevent cracking
Fast drying (80-120°C) for bound water removal
Airflow design: Vertical airflow to keep temperature difference <5°C in stacks
Waste heat recovery: Reuse tunnel kiln cooling zone heat for drying
5. Tunnel Kiln Firing Curve
The firing curve determines brick strength and fuel efficiency:
Preheating zone (200-600°C): Heating rate ≤50°C/hour to prevent explosions
Firing zone (900-1050°C): Hold for 2-4 hours under oxidizing atmosphere
Cooling zone: Slow cooling to <80°C (rapid cooling causes glass-phase cracking)Failure Cases vs. Good Design:
Issue | Poor Design | Good Design |
Brick Cracking | Single-stage drying | Multi-stage gradient drying |
High Fuel Consumption | No kiln waste heat recovery | Integrated drying-firing heat recovery system |
Low Production Capacity | Mismatched crusher and extruder capacity | Holistic equipment capacity coordination |
Spiral Mark Defects | Insufficient extruder compression ratio | Optimized die L/D ratio (≥4:1) |
Material Waste | No homogenization causing material inconsistency | Enclosed aging shed + automated batching system |