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High alumina brick
High alumina 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