andalusite Refractory Bricks for Foundry

Andalusite refractory bricks for casting are specially used for the furnace wall, checker bricks, furnace roof, combustion chamber and other parts of hot blast furnaces, which have higher requirements on the strength and wear resistance of refractory materials.
Compared with traditional high-alumina bricks, it has higher strength and wear resistance, excellent thermal shock stability, increases the service life of the kiln lining, and reduces the company's refractory material expenses.

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Description

Red pillar stone bricks are mainly made of corundum, red pillar stone, and other raw materials, and the particle size of the raw materials is strictly controlled, New processes are applied, and multi-level batching, matrix homogenization, and determination of the best calcination temperature and other process measures are adopted.

Andalusite bricks with excellent performance can meet the different parts and different working environments of blast furnaces and hot blast furnaces. The use of andalusite in industry is mainly for its high temperature resistance. After being heated to 1350℃ under normal pressure, andalusite begins to transform into needle-shaped mullite. Mullite crystals are the stable form of aluminum silicate under high temperature.

Brand/Item	Andalusite
	HXH-57
Al₂O₃%	≥57
Fe₂O₃%	≤2.0
Apparent Porosity %	≤25
Bulk Density g/cm³	≥2.30
Refractoriness ℃	≥1790
Permanent Linear Change %

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High Alumina Refractory Bricks for Casting

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