High Purity Corundum Products are mainly made of great fused corundum and be sintered in the high temperature furnace. These refractory products can be widely used in 300000 tons/year of synthetic ammonia, sec conversion furnace, medium-sized fertilizer plant gasifier, carbon ink furnace and other similar types of thermal furnace equipment due to the higher refractoriness, great corrosion resistance and higher refractoriness under load.

Physical and chemical indexs:

ITEM INDEX PRODUCT	Al2O3 %	SiO2 %	Fe2O3 %	Compressive strength (Mpa)	Linear change ratio after firing (1650℃ x 2h) %	Refractoriness under load (0.196 Mpa ℃)	Refractoriness ℃
High purity corundum	>98	<0.5	<0.4	>80	<0.1	1710	>1790
High corundum	92-95	<2.5	<0.5	>60	<0.1	1670	>1790
Low corundum	>85	<8	<0.8	>55	<0.2	1570	>1790