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Extraction of Chromium from Low-grade Chromium-Bearing Ores.

Authors
Chandra-D; Magee-CB; Leffler-L
Source
NTIS: PB 83-106781 :164 pages
Link
NIOSHTIC No.
10006525
Abstract
In an effort to utilize domestic low-grade resources to extract chromium, mouat chromite concentrates from Stillwater Complex, Montana, were subjected to a sodium hydroxide or caustic soda roast and water leach bench-scale method. Although the soda roasting method has been known for quite some time, there are some problems associated with the roasting, particularly with lower grade chromites with lattice and gangue impurities. Using advanced electron-optical and x-ray microanalytical and macroanalytical techniques, the mechanics occurring in the soda roasting step have been revealed. The roasting step is the key to this overall process, and the rate-limiting steps have been identified, allowing substantial improvements in chromium extraction yields.
Publication Date
19820101
Document Type
CP; Final Contract Report;
Fiscal Year
1982
NTIS Accession No.
PB83-106781
NTIS Price
A09
Identifying No.
OFR 151-82
NIOSH Division
WO;
Source Name
NTIS: PB 83-106781
State
MT;
Performing Organization
Univ. of Denver, Denver Res.
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