Brand name Item		CL Low-silicon refractoriness Castable	CLQ Low-silicon refratoriness Castable	TG-94 Special refractory Castable	GL-60 refractory Castable	FQ alumina cement refractory Castable	VSL-50 refractory Castable
Al2O3 ≥%		93	93	95	60	/	30
SiO2≤%		0.5	0.5	0.5	/	/	45
Fe2O3≤%		0.7	0.7	0.7	/	/	/
CaO ≤%		5	5	2.5	/	/	/
Cold crushing strength ≥MPa	110℃	40	15	50	30	1.5	3.0
	1000℃	28	/	80	20	1.2	2.0
	1300℃	20	/	80	/	/	/
Bulk density≥g/cm3		2.80-3.00	1.60-1.70	3.00-3.20	2.35-0.05	0.90+0.05	1.15+0.05
Linear change after heating ≤%		(1400℃*3h) +0.35	(1400℃*3h) +0.3	(1100℃*2h) -0.5	(1300℃*2h) -0.1	(900℃*2h) -0.4	(800℃*2h) -0.25
Thermal conductivity ≤W/m.k			800℃ 0.7			500℃ 0.26	500℃ 0.28
Remarks		Be used in the second transform oven	Transport windpipe line	The second gasily oven	Flue cover brick	The first oven flue	French type oven

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