Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Cobalt and Nickel Recovery from Missouri Lead Ores.

Authors
Paulson-DL; Dressel-WM; Doerr-RM
Source
Proc 7th Miner Waste Utilization Symp Chicago Illinois, 1980 Oct; :127-134
Link
NIOSHTIC No.
10008476
Abstract
The Bureau of Mines is developing procedures to recover up to 2.5 million pounds of cobalt and 3.5 million pounds of nickel lost annually in processing Missouri lead ores. In the physical separation process, a pb-cu rougher concentrate is separated by wet high-intensity magnetic separation and the magnetic fraction (chalcopyrite concentrate) is reground and floated to produce a high- grade copper concentrate and a tailing product containing over 3.5 pct cobalt and 5 pct nickel. In the hydrometallurgical process, both a co-ni bearing tailing product and lead smelter mattes are leached with manganese dioxide and sulfuric acid to obtain cobalt, nickel, copper, lead, manganese sulfates, and elemental sulfur. At 85 deg. to 100 deg. C, the cobalt, nickel, and copper are solubilized as sulfates leaving a residue of pbso4, sulfur, and gangue. The residue can be returned to a smelter for lead recovery and the soluble metals are recovered from the leach solutions by caustic purification (removal of arsenic and iron) and sequential sulfide precipitations. The products are copper sulfide (62 pct copper) and co-ni sulfide (up to 50 pct combined cobalt and nickel). The manganese is reclaimed from the leach liquor as manganese oxide to be used for recycling.
Publication Date
19801001
Document Type
OP;
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
OP 55-80
NIOSH Division
RORC;
Source Name
Proc. 7th Miner. Waste Utilization Symp., Chicago, Illinois, Oct. 20-21, 1980, PP. 127-134
State
IL; MO;
TOP