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Bau Ite To Alumina Processing Machine 26 2339 3

what is the process called when mineral is washed,bauxite the principal ore of aluminum. geology. in the bayer process, the bauxite is washed in a hot solution of sodium hydroxide, which leaches aluminum from the bauxite. the aluminum is precipitated out of solution in the form of aluminum hydroxide, al(oh) 3. the aluminum hydroxide is then calcined to form alumina, al 2 o 3..bauxite extraction from silica sand,extraction process of aluminium from bauxite ore alumina extraction problem. in the standard bayer process for refining bauxite to produce alumina the dissolution of the alumina in the ore to form sodium aluminate is accomplished in autoclaves under high pressures varying from 70 to 200 pounds per square inch..

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