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Which of the following process is used i...

Which of the following process is used in the extractive metallurgy of magnesium ?

A

Fused salt electrolysis

B

Self-reduction

C

Aqueous solution electrolyisis

D

Thermite reduction

Text Solution

Verified by Experts

The correct Answer is:
A
Anhydrous magnesium chloride is fused with `NaCl` and anhydrous calcium chloride. The mixture is electrolysed at `700^@ C` in the presence of an inert gas in an electrolytic cell. Magnesium is discharged at cathode. The purpose of the addition of `NaCl` and `CaCl` to anhydrous `MgCl_(2)` is to lower to fusion temperature and make the fused mass a good conductor of electricity.
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