Electrolytic refining is used for the extract | vedclass

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(A) The extraction of aluminum is primarily carried out by the Hall-Heroult process. In this process,pure $Al_2O_3$ is dissolved in molten cryolite $(

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Fluorides of $Al, Na$ and $Ba$

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(A) The extraction of aluminum is primarily carried out by the Hall-Heroult process. In this process,pure $Al_2O_3$ is dissolved in molten cryolite $(Na_3AlF_6)$ along with a small amount of fluorspar $(CaF_2)$. These fluorides ($Al, Na, Ba$ or $Ca$) are used to lower the melting point of the mixture and increase its electrical conductivity. Therefore,the correct electrolyte mixture consists of the fluorides of $Al, Na$ and $Ba$ (or $Ca$).

Electrolytic refining is used for the extraction of aluminum. Which electrolyte is used in this process?

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