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High Alumina Bricks
High Alumina Bricks
High alumina bricks for general uses are made from super quality bauxite, bonding fireclay and additives, the advantages of these products are high refractoriness, acid alkali resistance, good strength under high temperature and thermal shock resistance. They are widely used in thermal equipment of metallurgic, petroleum, refractory, ceramics and cement industries.
Low creeping high alumina bricks for hot blast stove, low creeping fireclay bricks, low creeping and anti-thermal shock high alumina bricks ,mullite bricks, corundum mullite bricks, high alumina bricks for EAF roof, high alumina bricks for ladles, anti-spalling high alumina bricks for cement kilns etc are all available .
|
Index |
LZ-48 |
LZ-55 |
LZ-65 |
LZ-75 |
LZ-80 |
||
|
Refractoriness SK |
36 |
37 |
37 |
38 |
39 |
||
|
Refractoriness under load 0.2Mpa ℃ |
≥1420 |
≥1450 |
≥1500 |
≥1520 |
≥1530 |
||
|
Permanent linear change rate% |
1500℃x2h |
+0.1∽-0.4 1450℃x2h |
+0.1∽-0.4 |
+0.1∽-0.4 |
+0.1∽-0.4 |
+0.1∽-0.4 |
|
|
Apparent porosity % |
≤22 |
≤22 |
≤24 |
≤24 |
≤21 |
||
|
Cold crushing strength Mpa |
≥40 |
≥45 |
≥50.0 |
≥60 |
≥70 |
||
|
Chemical composition |
Al2O3 % |
≥48 |
≥55 |
≥65 |
≥75 |
≥80 |
|
|
Fe2O3 % |
≤2.5 | ≤2.5 | ≤2.0 | ≤2.0 | ≤2.0 | ||