High Alumina Bricks for general uses are made from bauxite of super quality, bonding chamotte and additives. Al2O3: 48%-75%. High Alumina Bricks for general uses are made from bauxite of super quality, bonding chamotte and additives. The advantages of these products are high refractoriness, anti alkaline/acid erosions, good strength under high temperature and good thermal shock resistance.They were widely accepted in thermal equipment of metallurgy,petroleum,  chemical industry, construction materials, machinery and militaries  etc. Specification:  

Item	LZ-75		LZ-65	LZ-55	LZ-48
Al2O3,  %             min	75		65	55	48
Refractoriness      min	1790		1790	1770	1750
RUL                      min	1520		1500	1470	1420
P.L.C.        1500 X 2h	0.1-0.4     1500 X 2h				0-0.2
A.P.                     max	23		23	22	22
CCS                     max	53.9	49.0		44.1	39.2