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1,Corundum brick
2,Widely used as linings in decomposing furnaces for petroleum
3,as well as chemical fertilizer industry
Corundum brick
Characteristics:2, CO gases at use. 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. |
Chemical and Physical Properties of Corundum Products
Name Indexes Items | High purity corundum bricks DL-98 | Normal corundum bricks DL-95 | Normal corundum bricks DL-90 | Mullite corundum Bricks MDL-80 | Chromium oxide corundum Bricks GDL-85 | Chemical composition | Al2O3% | 98.5 | 95 | 90 | 80 | 85 | Cr2O3% | | | | | | SiO2% | 0.3 | 3.0 | 9.0 | 18 | 0.2 | Fe2O3% | 0.2 | 0.2 | 0.5 | 0.5 | 0.2 | R2O% | 0.3 | 0.6 | 0.6 | 0.4 | 0.5 | Bulk density g/cm3 | 3.0 | 2.9 | 2.9 | 2.7 | 3.1 | Compressive strength at normal temperature MPa | 75 | 100 | 100 | 60 | 80 | Fire resistant °C | 1790 | 1790 | 1790 | 1790 | 1790 | Soften point at 0.2 MPa load KD °C | 1700 | 1650 | 1650 | 1700 | 1700 | Reheating linear shrinkages% 1600 °C ×3h | 0.2 | 0.2 | 0.2 | 0.3 | 0.2 | Thermal shock stability 1100 °C water | 6 | 10 | 10 | 20 | 15 |
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