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The aluminium production process - European Aluminium Pure aluminium oxide, called alumina, is extracted from bauxite via a process called refining, composed of two steps: a digestion process, using caustic soda, which allows the separation of aluminium hydroxide from the so-called "bauxite residue", followed by a calcination step which removes the water content in the hydroxide. Bauxite How To Extract Alumina - cesareavanzi An aerial view of a bauxite mine and alumina processing plant in Australia But its primary use is to act as a starting point to extract pure aluminum.... Online Price List The extraction of aluminum involves two steps that is, purification and electrolysis of alumina. bauxite to alumina processing machinezenith bauxite mining plant bauxite processing plant. is called alumina which is another name for aluminum oxide small or large jaw crusher for primary and coarse. Read More gravel sand cement estimate in .    Read More