High Al Brick

High Alumina bricks for general uses are made from bauxite of super quality, bonding chamotte and additives.

Main Properties

Item	Index
Code	DL-48	DL-55	DL-65	DL-70	DL75
Al2O3 min, %	48	55	65	70	75
Refractoriness , min	1790	1793	1760	1770	1780
Refractoriness under load (0.2MPa) , min	1360	1380	1420	1430	1440
Linear change after reheating(1550, 2h) %	0 ~ -0.6	0 ~ -0.55	0 ~ -0.3	0 ~ -0.3	0 ~ -0.3
Apparent porosity max, %	21	19	19	19	18
Cold crushing strength Mpa, min	40	45	50	55	60

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