why cryolite is used in the extraction of aluminium meta?
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Cryolite ( Na3AlF6 )is the main ore of aluminium. It is an ore which contains aluminum and is found abundantly on the Earth's crust. So, cryolite is used in the extraction of aluminum.
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Aluminium ore is called bauxite. The bauxite is purified to yield a white powder, aluminium oxide, from which aluminium can be extracted. The extraction is done by electrolysis. But first the aluminium oxide must be made molten so that electricity can pass through it.
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