Aluminium is the most abundant metal on the earth's crust. a Which is the ore of aluminium? b Describe the different steps in the concentration of this ore.
Explanation
The most abundant metal on the earth's crust is aluminium. The ore of aluminium is bauxite. The different steps in the concentration of bauxite are: 1) Crushing and grinding of bauxite to increase the surface area. 2) Separation of bauxite from other minerals by magnetic separation. 3) Leaching of bauxite with sodium hydroxide solution to dissolve the aluminium-bearing minerals. 4) Precipitation of aluminium hydroxide from the leach solution.
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