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corundum brick
Numbering
Affiliate classification Corundum brick
Weight 0
Product Description
Product Overview:
Corundum brick is mainly made by fused white corundum, tabular corundum, super fine alumina powder through mixing them as per certain ratio, high pressure forming and burning under high-temperature. It’s a type of refractory product featuring high temperature resistance, high compression strength, high-temperature erosion resistance, scouring resistance, etc. It’s mainly used at key parts of kilns for steel, petrochemical, fertilizer, nonferrous metal, electronic and other industries.
Physical and chemical indicators：
| Item | GYZ-99A | GYZ-99B | GYZ-98 | GYZ-95 |
| Al2O3 % ≥ | 99 | 99 | 98 | 95 |
| SiO2 % ≤ | 0.15 | 0.20 | 0.50 | - |
| Fe2O3 % ≤ | 0.10 | 0.15 | 0.20 | 0.30 |
| Apparent porosity % ≤ | 19 | 19 | 19 | 20 |
| Volume density g/cm³ ≥ | 3.20 | 3.15 | 3.15 | 3.10 |
| Ambient compression strength Mpa ≥ | 80 | 80 | 80 | 100 |
| Changes in heating permanent line (16000°C×3h)）% | -0.2~+0.2 | -0.2~+0.2 | -0.2~+0.2 | -0.3~+0.3 |
| load softening starting temperature（0.2Mpa，0.6%） ℃ | 1700 | 1700 | 1700 | 1700 |