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Autoclave and Ambient Pressure Leaching of Lake Superior Manganiferous Ores.

Authors
Leak-VG
Source
NTIS: PB 199 044 :18 pages
Link
NIOSHTIC No.
10008735
Abstract
Leaching of manganese from low-grade Minnesota ores was studied over the temperature range 25 deg to 225 deg c at atmospheric and elevated pressures to demonstrate that good recoveries of manganese could be achieved from unroasted ores using reagents available nearby. Various combinations of ore, pyrite, lignite derivatives, and sulfuric acid were tested on a small scale. Pyrite alone required the highest temperature to effect a good extraction, but the combination of pyrite, lignite char, and sulfuric acid solubilized 99 percent of the manganese after 30 minutes of reaction at 75 deg c.
Publication Date
19710101
Document Type
IH; Report of Investigation;
Fiscal Year
1971
NTIS Accession No.
PB-199044
NTIS Price
A03
Identifying No.
RI 7501
NIOSH Division
TCRC;
Source Name
NTIS: PB 199 044
State
MN;
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