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High aluminum standing brick

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Product Description

  Product overview:

 

  High-alumina brick is made by incinerating high-alumina sintered bauxite and bonding agent, pelletizing and milling, mixing as per certain ratio, pressing molding and burning under high-temperature. It can be divided into such five grades as LZ-80, LZ-75, LZ-65, LZ-55 and LZ-48 as per physical and chemical indexes. It’s mainly used at high-temperature part of the industrial kiln.

 

  Physical and chemical indexes

 

Item Indexes
LZ-80 LZ-75 LZ-65 LZ-55 LZ-48
Al2O3        %          ≥ 80 75 65 55 48
Apparent porosity      %            ≤ 21 24 24 22 22
Ambient compression strength     Mpa       ≥ 70 60 50 45 40
0.2MPa load softening starting temperature  ℃   ≥ 1530 1520 1500 1450 1420
Changes in heating permanent line          % 1500℃×2h -0.4~+0.2 1450℃×2h -0.4~+0.1

 

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