The chrome corundum brick, which is characterized with good mechanical property at high temperature and chemical stability, etc., is mainly used as the back lining of the coal water slurry or petrol coke pressurized gasifier in petrochemical industry, working lining of gasifier, the inner lining of carbon black reaction furnace in chemical industry, and the inner lining of high temperature kilns in refractories industry.It has been applied in domestic and imported gasifier in many plants with good performance.
Item | Chrome corundum brick |
CRCB-5 | CRCB-12 | CRCE-20 | CRCB-30A | CRCB-30B |
Long term service temperature ℃ | 1800 | 1850 | 1850 | 1850 | 1850 |
Cr2O3 %≧ | 5 | 12 | 19 | 24 | 30 |
Al2O3+ Cr2O3 %≧ | 93 | 93 | 93 | 93 | - |
Al2O3+ Cr2O3+ZrO2 %≧ | - | - | - | - | 93 |
Fe2O3 %≦ | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
Bulk density , g/cm3 ≧ | 3.15 | 3.20 | 3.25 | 3.30 | 3.35 |
Apparent porosity , % ≦ | 18 | 18 | 18 | 18 | 18 |
cold crushing strength , MPa ≧ | 75 | 80 | 90 | 90 | 90 |