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In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to |
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Answer» minimise the heat LOSS due to radiation (ii) The fusion temperature of pure alumina is about `2000^(@)C` and at this temperature when the electrolysis is carried of FUSED mass, the metal formed EVAPORATES as the boiling point of aluminium is `1800^(@)C`.The above difficulties are overcome by using a mixture of alumina, cryolite and fluorspar. |
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