High Alumina Bricks for General Use
Mark & model：LZ-80、LZ-75、LZ-65、LZ-55、LZ-48
| 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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