Chemistry, asked by Vishal101100, 8 months ago

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What is the work of CRYOLITE and FLUORSPAR in hall heroult's procese ????
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Answered by kumarayan507

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The electrolysis of alumina by Hall and Heroult's process is carried by using a fused mixture of alumina and cryolite along with minor quantities of aluminum fluoride and fluorspar. The addition of cryolite and fluorspar increases the electrical conductivity of alumina and lowers the fusion temperature

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Answered by tapatidolai

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Use of cryolite and fluorspar in electrolytic reduction of pure alumina by Hall-Héroult process. Cryolite (Na3AlF6) and fluorspar (CaF2) are added to alumina to lower the temperature of the mixture from 2000 ∘C to about 900 ∘C and also to increase the conductance.

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What is the work of CRYOLITE and FLUORSPAR in hall heroult's procese ????
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