Characteristics: Corundum products and corundum synthetic products are characterized with excellent thermal shock resistance, corrosion resistance and have super properties in erosion and spalling. They are the first selected super materials for glass furnaces, heating furnaces chemical kilns and metallurgic furnaces.
Applications: Widely used as linings in decomposing furnaces for petroleum and chemical industry, as well as chemical fertilizer industry. They also used as high temperature kiln linings and furniture’s in metallurgical industry.
Specifications：
Index Item | High Pure Corundum Brick DL-98 | Common Corundum Brick DL-95 | Common Corundum Brick DL-90 | Mullite Corundum Brick MDL-80 | Chromium Corundum Brick GDL-85 |
Al2O3%≥ | 98.5 | 95 | 90 | 80 | 85 |
Cr2O3%≥ | —— | —— | —— | —— | 8 |
SiO2%≤ | 0.3 | 3.0 | 9.0 | 18 | 0.2 |
Fe2O3%≤ | 0.2 | 0.3 | 0.5 | 0.5 | 0.2 |
R2O%≤ | 0.3 | 0.6 | 0.6 | 0.4 | 0.5 |
Bulk Density g/cm3≥ | 3.0-3.2 | 2.9 | 2.9 | 2.75 | 3.1 |
Compressive Strength at MPa≥ | 75 | 100 | 100 | 60 | 120 |
℃≥ Fire Resistant | 1790 | 1790 | 1790 | 1790 | 1790 |
℃ Soften Point at 0.2 MPa Load 0.2MPa≥ | 1700 | 1650 | 1650 | 1650 | 1650 |
% 1600×3h≤ Reheating Linear Shrinkages | 0.2 | 0.2 | 0.2 | 0.3 | 0.2 |
1100℃≥ Thermal Shock Stability | 6 | 10 | 10 | 20 | 15 |
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