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Product Description of Fire Resistant High Alumina Refractory Brick Alumina Firebricks For Kiln & Boiler With High Refractoriness & Strength
High alumina brick is a kind of neutral refractory with alumina content above 48%. It is formed by shaping and calcining bauxite or other raw materials with high alumina content. High thermal stability and fire resistance above 1770 ℃.
Item | Index | ||||
SK40 | SK38 | SK37 | SK36 | SK35 | |
LZ-80 | LZ-75 | LZ-65 | LZ-55 | LZ-48 | |
Al2O3 % | ≥80 | ≥75 | ≥65 | ≥55 | ≥48 |
Apparent Porosity, % | ≤21 | ≤24 | ≤24 | ≤22 | ≤22 |
CCS, MPa | ≥70 | ≥60 | ≥50 | ≥45 | ≥40 |
0.2MPa RUL ℃ | ≥1530 | ≥1520 | ≥1500 | ≥1450 | ≥1420 |
PLC, % | 1500℃×2h -0.4~0.2 | 1450℃×2h -0.4~0.1 | |||
