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High Alumina Checker Bricks
Brand: HongTai Refractory
Category: High Alumina Brick
Al2O3: 48-65%
Size: 7 holes, 19 holes, 37 holes
Payment Terms: T/T, Credit Cardse, E-Checking, Alibaba Trade Assurance
Product Information
High alumina checker bricks are refractory bricks used as a lining for furnaces and kilns. Made from selected bauxite clays with an alumina content of 60% to 90%, these checker bricks exhibit high refractoriness, excellent corrosion and wear resistance, and superior thermal shock stability.
They have a grooved or ribbed shape that allows hot gases to circulate and prevent overheating. Our high alumina checker bricks are ideal for lining blast furnaces, hot blast stoves, and rotary kilns in steel plants and cement industries. They improve temperature homogeneity, extend furnace lifetime, and boost production efficiency.
| Item | RL-65 | RL-55 | RL-48 |
| Al2O3, %, ≥ | 65 | 55 | 48 |
| Refractoriness, ℃ , ≥ | 1780 | 1760 | 1740 |
| Refractoriness Under Load of 0.2MPa, ℃ , ≥ | 1500 | 1470 | 1420 |
| Linear Change after Reheating, %, 1500℃x2h | 0.1~-0.4 | 0.1~-0.4 | 0.1~-0.4 |
| Apparent Porosity, %, ≤ | 23 | 22 | 22 |
| Cold Crushing Strength, MPa, ≥ | 50 | 45 | 40 |
• High Alumina Content
• High Refractoriness
• Excellent Thermal Shock Resistance
• High Strength and Density
• Excellent Corrosion and Wear Resistance
• Grooved Shape for Gas Circulation
• Thermal Homogeneity
• Load Bearing Capacity
• Low Thermal Conductivity
• Anti-permeability
| Industry | Application |
|---|---|
| Regenerative heating chambers | Glass furnaces, steel reheating furnaces, open hearth furnaces |
| Hot blast stoves | Blast furnaces in the steel industry |
| Combustion chambers | Industrial boilers, incinerators, and furnaces |
| Heat storage and recovery systems | Waste heat recovery systems, heat storage systems in various industries |
