High chrome bricks are made of chromium oxide and alumina as the main raw materials, or a small amount of zirconium oxide is introduced. After high temperature firing into. The content of chromium oxide is not less than 75%, and the content of chromium oxide and alumina is not less than 98% of the shaped refractory products.
| Item | High chrome oxide brick | 80 chrome brick | 70 chrome brick | 60 chrome brick | 50 chrome brick |
|---|---|---|---|---|---|
| Cr2O3, % | ≥93 | ≥80 | ≥70 | ≥60 | ≥50 |
| Bulk density, g/cm3 | ≥4.25 | ≥4.1 | ≥3.7 | ≥3.6 | ≥3.5 |
| Apparent Porosity, % | ≤16 | ≤16 | ≤16 | ≤15 | ≤16 |
| Cold crushing strength, MPa | ≥100 | ≥120 | ≥120 | ≥120 | ≥120 |
| Load softening temperature, 0.2MPa 0.6% | ≥1700 | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
1.Excellent anti-leaching performance 2.High compressive strength at room temperature 3.Excellent wear resistance 4.High temperature resistance 5.Good thermal shock resistance
1. Used in key parts of coal chemical industry, chemical kilns, alkali-free glass fiber kilns, garbage incinerators, gasification furnaces, etc. 2. Used in linings of carbon black furnaces, copper smelting furnaces, glass kiln melting pools, steel rolling heating furnace chutes, steel unloading platforms, etc.