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Electrochemical Recovery of High-purity Nickel and Cobalt from Crude Nickel and Ferronickel.

Authors
Brooks-PT; Potter-GM
Source
NTIS: PB 192 297 :25 pages
Link
NIOSHTIC No.
10009043
Abstract
Semipilot scale tests were made to demonstrate a newly developed electrorefining process which could be extrapolated to commercial scale in producing high-purity nickel and cobalt from crude nickel metal and high-grade ferronickel. The new process comprises application of solvent extraction techniques to remove and separate cobalt and iron from nickel and the electrodeposition in diaphragm cells of pure nickel and cobalt from chloride-based purified electrolyte. Using water insoluble organic amines, the solvent extraction operations enabled production of commercial-sized nickel and cobalt cathodes of higher purity than that of commercial electrolytic metals. The solvent extraction operation for separation of cobalt from nickel was made simpler than the conventional method. Furthermore, the solvent extraction operation for iron removal made possible the electrorefining of ferronickel without the prohibitive loss of nickel resulting from the method ordinarily used for iron removal.
Publication Date
19700101
Document Type
IH; Report of Investigation;
Fiscal Year
1970
NTIS Accession No.
PB-192297
NTIS Price
A03
Identifying No.
RI 7402
NIOSH Division
SLRC;
Source Name
NTIS: PB 192 297
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