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Bauxite Ore

Bauxite Ore


Use of bauxite is actually refers to the industry, in sanshui LvShi, soft LvShi monohydrate or hard LvShi monohydrate as the main mineral composition of ore. White or because of impurities in light grey, pale green, pale red color. Vitreous luster, cleavage plane pearl luster. Transparent to translucent. Cleavage completely. Hardness is 2.5 ~ 3.5. Relative density 2.30 ~ 2.43. With mud smell. Under polarizer, colorless. Biaxial crystal. Ng = 1.587 Nm = Np = 1.566.

Discovery Process of Bauxite

Bauxite mining began in France in 1873, production of alumina from bauxite began in 1894, using bayer process, the scale of production is only more than 1 t per day. In 1900, France, Italy and the United States and other countries have a small amount of bauxite mining, production only 90000 tons per year. With the development of modern industry, aluminum as the metal and alloy is applied to the aviation and military industry, and then extended to the civilian industry, aluminum industry has made rapid development, by 1950, the world metal aluminium production has reached 1.51 million tons, 1996 to 20.92 million tons, is the second important is second only to iron and steel metal.

Application of Bauxite

the best raw materials, production of aluminum is the main field of application of the dosage of more than 90% of the total world bauxite production. Bauxite in non-metallic proportion is small, the amount of but it is very extensive use. 1. The paper making, water purification, ceramic, and petroleum refining; 2. As a catalyst, catalyst carrier and decoloring, dewatering, degassing, acid, drying and other physical adsorbent; 3. Used for dyes, rubber, pharmaceutical, oil and other organic synthesis application; 4. Advanced grinding wheel, polishing powder, the main raw material; 5. Production of refractory materials.

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