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Cobalt and nickel from lead-smelter matte: purification of leach liquor.

Authors
Prater-RB Jr.; Doerr-RM
Source
MISSING :24 pages
Link
NIOSHTIC No.
10005713
Abstract
Research by the Bureau of Mines includes efforts to devise means for maximum recovery of critical and strategic metals from primary and secondary domestic resources. As part of that effort, the Bureau developed a hydrometallurgical process to recover CO, ni, and cu from Missouri lead-smelter matte. The process includes leaching with h2so4 plus mNO2 as an oxidizing agent, liquor purification, selective precipitation of cus, (co,ni)s, and mnco3, and crystallization of na2so4. This report is concerned primarily with liquor purification, in which as and fe are removed from the leach liquor by ph adjustment and filtration. Two variations of the purification step are described. One variation provides liquor containing less than 1 mg/l as and fe but requires two solid-liquid separations. The other is achieved with only one solid-liquid separation but leads to a lower degree of purification.
Publication Date
19870101
Document Type
IH; Report of Investigations;
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
RI 9082
NIOSH Division
RORC;
Source Name
MISSING
State
MO;
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