Process for the separation of calcium and nitrogen from lithium

Details Process for the separation of calcium and nitrogen from lithium Process for the separation of calcium and nitrogen from lithium

1990-05-16

1991-05-28

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75589, 75710, C22B 2612

Patent

active

050191586

ABSTRACT:
A process is disclosed for separating calcium and nitrogen from lithium, in which alumina is added to molten lithium and reacts to produce aluminum and lithium oxide. The aluminum reacts with the nitrogen in the lithium to produce insoluble aluminum nitride, while the lithium oxide reacts with the calcium present to produce insoluble calcium oxide and lithium. The insoluble calcium oxide and aluminum nitride may then be separated from the molten lithium, such as by filtration.

REFERENCES:
patent: 3287109 (1966-11-01), Moolenaar
patent: 4781756 (1988-11-01), Frianeza-Kullberg et al.

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