Clay Brick

Details

Our clay bricks are widely used in glass furnace, blast furnace, hot-air furnace, cement furnace, chemical furnace and other heat-engineering equipments.

Item	General high-alumina brick			General fireclay bricks
Brand	LZ- 75	LZ- 65	LZ-55	N1	N2a	N2b	N3a	N3B	N4	N5	N6
Al2O3 %min	75	65	55	36-48
Fe2O3 %max	2
Refractori -ness ℃ min	1790	1770	1770	1750	1730	1730	1710	1710	1690	1670	1580
Reheating linear change 1500℃2h% PLC	+0.1 -0.4			1400℃, 2h%			1350℃,2h%
Reheating linear change 1500℃2h% PLC	+0.1 -0.4			+0.1 -0.4	+0.1 -0.5	+0.2 -0.5	+0.2 -0.4	+0.2 -0.5	+0.2 -0.5	+0.2 -0.5
Refractoriness under load (0.2MPa) ℃ PUL min	1520	1500	1470	1400	1350		1320		1300
Apparent porosity % max	23	23	22	22	24	26	24	26	24	26	28
Cold crushing strength Mpa min	53.9	49	44.1	30	25	20	20	15	20	15	15

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