High Alumina Bricks for General Use
Mark & model：LZ-80、LZ-75、LZ-65、LZ-55、LZ-48
Origin：Asia and Pacific AreaChina
Quality standard：International
| HIGH ALUMINA BRICKS FOR GENERAL USE | ||||||
| Goods Brand | LZ-80 | LZ-75 | LZ-65 | LZ-55 | LZ-48 | |
| Al2O3(%) min | 80 | 75 | 65 | 55 | 48 | |
| Refractriness under load 0.2 Mpa ( ℃) min | 1530 | 1520 | 1500 | 1450 | 1420 | |
| Apparent porosity (%) max | 22 | 23 | 23 | 22 | 22 | |
| Cold Crushing strength (MPa)min | 55 | 50 | 45 | 40 | 35 | |
| Shrinkage after reheating (%) max | 1500℃x2h | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 | *** |
| 1450℃x2h | *** | *** | *** | *** | +0.1~-0.4 | |
| Alumina-silicate products containing more than 48% of Al2O3 and in a certain shape, is called high alumina brick, widely used in blast furnace, thermal storage chamber, soaking pit, annealing furnace, ladle, etc. High alumina brick containing more than 80% or higher are used in electric arc furnace roof and the special zone of other high temperature furnaces. | ||||||
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