C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/145, 204/50
C25C 3/02 (2006.01) C25C 7/08 (2006.01)
Patent
CA 1330772
ABSTRACT OF THE DISCLOSURE: A process of producing lithium metal by the elec- trolysis of fused mixed salts comprising electrolyzing fused mixed salts consisting of lithium chloride and potassium chloride in a diaphragmless electrolytic cell, withdrawing molten lithium metal from the cell to a receiver and cooling the lithium metal which has been withdrawn. To decrease the content of impurities in a continuous process, molten mixture which rises in the interelectrode space in the cell and contains lithium metal is collected in an annular zone, which surrounds the top end of the cathode adjacent to the surface level of the molten mixture, the molten mixture is withdrawn from the annular zone through a siphon pipe and is supplied from the latter to a separating chamber, which communicates with the electroly- tic cell and is sealed from the chlorine gas atmosphere in the electrolytic cell; electrolyte and lithium are separated in the separating chamber under a protective gas atmosphere, lithium metal is discharged from the separating chamber into a receiver under a protective gas atmosphere, and the elec- trolyte is recycled from the separating chamber to the elec- trolytic cell. And an electrolytic cell for carrying out the process is also described.
518113
Bauer Richard
Dolling Eike
Muller Jurgen
Sermond Bernd
Metallgesellschaft Aktiengesellschaft
Robic
LandOfFree
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