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High alumina bricks for hot air ducts
High alumina bricks for hot air ducts
Numbering
Affiliate classification High-alumina brick for hot-blast furnace
Weight 0
Product Description

  Product Overview:

     High-alumina brick for hot-blast furnace is a refractory product which is calcined high-quality high-alumina bauxite clinker and binder first through granulation and pulverization processes, mixed in a certain proportion, and then press-molded and fired at high temperature. According to the physical and chemical indicators, it is divided into three brands: RL-65, RL-55, and RL-48. Mainly used for masonry hot blast stove wall.


  Physical and chemical indicators:

Item Indicator
RL-65 RL-55 RL-48
Al2O3        %          ≥ 65 55 48
Refractory       ℃      ≥ 1780 1760 1740
Apparent porosity       %            ≤ 22(24) 22(24) 22(24)
Compressive strength at room temperature     Mpa       ≥ 50 45 40
0.2MPaLoad softening start temperature ℃   ≥ 1500 1470 1420
Reburning line change            % 1500℃×2h
-0.4~+0.1
1450℃×2h
-0.4~+0.1