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Biological Leaching of Manganese Ores.

Authors
Noble-EG; Baglin-EG; Lampshire-DL; Eisele-JA
Source
SME Preprint 91-189 1991 :14 pages
Link
NIOSHTIC No.
10009142
Abstract
The U.S. Bureau of Mines is investigating microbial leaching as a method for recovering the metal values from a domestic low-grade manganese wad ore. Early work showed that heterotrophic microorganisms present in the ore solubilized manganese when cultured in a glucose-mineral salts medium. More recent shake-flask tests using molasses as the sole nutrient source extracted 97 pct of the manganese from minus 300-um ore in 4 weeks. Column bioleaching with the molasses medium solubilized 99 pct of the manganese from minus 6.3-Mm ore in 50 weeks. The results of flask, column, and laboratory-scale heap bioleaching studies are presented.
Publication Date
19910101
Document Type
OP;
Fiscal Year
1991
NTIS Accession No.
NTIS Price
Identifying No.
OP 84-91
NIOSH Division
RERC;
Source Name
SME Preprint 91-189, 1991, 14 PP.
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