HIGH-ALUMINA SERIES

FOR BLAST FURNACE
Products   Specifications	high-alumina brick for blast furnace			AL2O3-C brick for blast furnace
	GL-55	GL-65	GL-75	unburnt AL2O3-C brick	AL2O3-C brick
AL2O3%  >=	55	65	76	60	60
Fe2O3%  <=	2.0	2.0	2.0	1.5	1.5
C%  <=				12	12
Refractoriness0C  >=	1770	1790		1790
0.2MPa Refractoriness under load 0C  >=	1480	1500	1520	1650	1650
Linear Change After Heating %(15000C x 2h)	0 ~ -0.2	0 ~ -0.2	0 ~ -0.2	<= 0.2	<= 0.2
Apparent Porosity % <=	19	19	19	10	18
Cold Crushing Strength MPa  >=	49.0	58.8	70	40	60

FOR BLAST FURNACE HOT STOVES
Products   Specifications	High-Alumina Brick for Hot Stove		Low-Creep Series High-Alumina Bricks
	RL-65	RL-55	LDRL-150	LDRL-150	LDRL-145	LDRL-140	LDRL-135	LDRL-130
AL2O3%  >=	65	55	75	75	65	65	65	60
Refractoriness 0C  >=	1790	1770	1790	1790	1800	1850	1850	1850
0.2MPa Refractoriness Under Load 0C  >=	1500	1470	1550	1550	1500	1500	1500	1480
Linear Change After Heating %(15000 x 2h)	+0.1 -0.4	+0.1 -0.4	<= 0.2	<= 0.2	<= 0.2	<= 0.2	<= 0.2	<= 0.2
Apparent Porosity <=	24	24	20	21	19	23	23	23
Cold Crushing Strength MPa  >=	49	44.1	60	60	60	50	45	45
Creep Rate (0.2MPa X 50h)%  <=			15500C	15000C	14500C	14000C	13500C	13000C
			0.4	0.4	0.4	0.4	0.4	0.4
			0.6	0.6	0.6	0.6	0.6	0.6
			0.8	0.8	0.8	0.8	0.8	0.8

HIGH -ALUMINA BRICKS FOR LADLES
Products Specifications		High-alumina Brick for Ladle			Ultra-low Expansion High-alumina Brick
		CL-75	LCL-80	LCL-85	LPL-78	LPL-85
AL2O3%   >=		75	80	85	78	85
Fe2O3%  <=					2.0	2.0
refractoriness >=					1790	1800
0.2MPa Refractoriness under load >=		1510	1530	1560	1550	1600
Linear change after heating%	(15000C x 2h)	+0.1 -0.5			0 +0.6	0 +1.0
	(15500C¡Á2h)		+0 -0.4	+0 -0.4
Apparent Porosity <=		28	21	20	19	20
Cold Crushing Strength MPa >=		39.2	65	65	70	80
Bulk Density g/cm3    >=		2.65	2.8	2.85	2.75	2.90

FOR CEMENT KILN
Products Specifications	Spalling-resistance High Alumina Brick		Alkali-resistance Brick
	LKBL-70	LKBL-75	LNJ-30	LNJ-35
AL2O3%   >=	70	75	27	35
Fe2O3%  <=			2.0	1.5
0.2MPa refractoriness under load >=	1500	1520	1390	1460
linear change after heating%(14000C x 2h)			-0.1¡«+0.3	-0.1¡«+0.3
apparent porosity <=	22	23	24	24
cold crushing strength MPa >=	60	75	20	25
bulk density g/cm3    >=		1.95	1.96
thermal shock resistance (11000C-water) times	40	30

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