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High alumina vertical brick
Numbering
Affiliate classification High-alumina brick
Weight 0
Product Description
Product Overview:
High-alumina brick is a calcined high-alumina bauxite clinker and a binder that are first granulated and pulverized, then mixed at a certain ratio, and then pressed and fired at high temperature. According to the physical and chemical indicators are divided into five brands LZ-80, LZ-75, LZ-65, LZ-55, LZ-48. Mainly used in high temperature parts of industrial kiln.
Physical and chemical indicators：
| Item | Indicator | ||||
| LZ-80 | LZ-75 | LZ-65 | LZ-55 | LZ-48 | |
| Al2O3 % ≥ | 80 | 75 | 65 | 55 | 48 |
| Apparent porosity % ≤ | 21 | 24 | 24 | 22 | 22 |
| Compressive strength at room temperature Mpa ≥ | 70 | 60 | 50 | 45 | 40 |
| 0.2MPaLoad softening start temperature ℃ ≥ | 1530 | 1520 | 1500 | 1450 | 1420 |
| Heating permanent line change % | 1500℃×2h -0.4～+0.2 | 1450℃×2h -0.4～+0.1 | |||