The AL2O3 content of lightweight insulation bricks is over 48%, mainly composed of mullite and glass phase or corundum, which are lightweight refractory materials. The volume density is 0.4-1.35g/cm3. The porosity is 66% to 73%, the compressive strength is 1-8MPa, the refractory temperature is 1600 degrees, and the thermal shock resistance is good.
High alumina lightweight insulation bricks, also known as high alumina lightweight ball bricks, are produced using special grade blast furnace materials as the main raw materials, supplemented by appropriate additives, and using the low alumina burning loss method. The product has advantages such as high strength, good thermal stability, minimal changes in re fired fibers, and low thermal conductivity. 1. High temperature strength;
2. Good insulation performance;
3. Resistant to corrosion in various atmospheres;
4. Significant energy-saving effects and other characteristics;
5. Excellent thermal shock stability performance.
Application of high alumina lightweight bricks: High alumina lightweight bricks have reached various technical indicators of similar products and are currently a necessary new material in industrial kiln design. Widely used in industries such as metallurgy, machinery, ceramics, and chemical engineering, it is an ideal energy-saving product for kiln linings (not corroded by solutions) and insulation layers. Its operating temperature is below 1350 ° C.
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