Extraction process for removing metallic impurities from alkalid

Details Extraction process for removing metallic impurities from alkalid Extraction process for removing metallic impurities from alkalid

1987-03-20

1988-01-26

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 66, C22B 2610, C22B 2612

Patent

active

047215259

ABSTRACT:
A development is described for removing metallic impurities from alkali metals by employing an extraction process wherein the metallic impurities are extracted from a molten alkali metal into molten lithium metal due to the immiscibility of the alkali metals in lithium and the miscibility of the metallic contaminants or impurities in the lithium. The purified alkali metal may be readily separated from the contaminant-containing lithium metal by simple decanting due to the differences in densities and melting temperatures of the alkali metals as compared to lithium.

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