Usage ⑴ aluminum industry. For the defense, aerospace, automotive, electrical, chemical, daily necessities and so on. ⑵ precision casting. Bauxite clinker processed into a fine powder made after casting molds. Used in military, aerospace, communications, instrumentation, mechanical and medical device sectors. ⑶ for refractory products. Bauxite refractoriness up 1780 ℃, chemical stability, good physical properties. ⑷ aluminosilicate refractory fibers. Light weight, high temperature, good thermal stability, low thermal conductivity, heat capacity of small and resistance to mechanical vibration and so on. For iron and steel, non-ferrous metallurgy, electronics, petroleum, chemical, aerospace, nuclear, defense and other industries. It is put into the high alumina clinker melt temperature of about 2000 ~ 2200 ℃ high temperature electric arc furnaces, high temperature melting, high velocity air or steam injection pressure, cooling, became white "cotton" - silicate refractory fiber. It can be pressed into a fiber blanket, sheet or woven into cloth instead of refining, chemicals, glass and other industrial high temperature furnace lining refractory bricks. Firefighters made available refractory fiber cloth clothes.