Method for producing magnesium metal from molten salt

Details Method for producing magnesium metal from molten salt Method for producing magnesium metal from molten salt

1980-01-25

1981-11-03

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

C25C 304

Patent

active

042984378

ABSTRACT:
The instant invention relates to a method for making magnesium metal by reducing a magnesium metal precursor in an electrochemical cell wherein the cathode is a molten silicon alloy. Magnesium metal is formed at the interface of the silicon alloy and the magnesium metal precursor (or the molten salt if the magnesium metal precursor is suspended as finely divided particles in a molten salt) and subsequently combines with said silicon alloy. The silicon alloy containing combined magnesium metal is removed from said cell to a magnesium metal removal zone wherein an inert gas is passed through the alloy at a temperature and pressure sufficient to remove the magnesium metal as a vapor overhead. The magnesium metal is recovered and the silicon alloy, depleted in magnesium, is returned to the cell for further use as a cathode.

REFERENCES:
patent: 3503857 (1970-03-01), Hard et al.

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