Fused Corundum Brick Plant

Fused corundum brick is mainly composed of α-Al2O3, which has high heat resistance, strong alkali resistance, compact structure, excellent chemical stability, high wear resistance and much more resistant to various slags, than other aluminosilicates. It is an ideal material for metallurgical electrolysers and rail bricks for heating furnaces.

Fused corundum brick production process

fused corundum brick

Fused corundum bricks are melted from alumina in an aluminum arc furnace, and then cast into a specific model, so to customize fused corundum bricks it is necessary to change different shapes; by diamond abrasive processing it is possible to obtain the necessary fused corundum bricks.

Parameter of Fused Corundum Brick

Subject	Index
Subject	Fused cast α-corundum bricks	Fused cast β-corundum bricks	Fused Cast α-β Corundum Bricks
Al₂O₃ %	98	92	94.0
Already₂O %	1.0	6.5	4.0
SiO₂+CaO+Fe₂O₃+TiO₂ %	≤1.0	≤1.5	≤2.0
α-Corundum %	90	2	44
β-corundum %	4	97	55
Glass phase %	6	1	1
Bulk density (Dense part) g/cm³	3.3	3.1	3.3
Cold crush strength MPa	200	50	200
0.2Mpa Fire resistance under load ℃	1700	1700	/
Static Resistance to Erosion Depth of Liquid Glass mm/24h Ordinary soda-lime glass 1350℃×48h	/	/	0.3

Advantages of sintered corundum bricks

Resistance to high temperatures and pressure.
Fire resistance and thermal insulation.
High density, oxidation protection.
High wear resistance.
High corrosion resistance.
Good heat resistance.
Low coefficient of thermal expansion.
Customization support.

Application areas of fused corundum bricks

Iron and Steel Industry: Fused corundum bricks are often used to line high temperature containers, such as buckets, cast iron ladles and converters in ferrous metallurgy.
Glass industry: Fused corundum bricks are suitable for making high temperature parts, such as glass steel sheets and furnace throats in glass melting furnaces.
Chemical industry: Fused corundum bricks can be used as refractory materials for high temperature reaction boilers, high temperature storage tanks and high temperature piping in the chemical industry.
Aluminum industry: Fused corundum bricks can be used to line high temperature containers, such as aluminum electrolyzers, in the aluminum industry.