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Extraction of Manganese from Georgia Umber Ores by an Acid-ferrous Sulfate Process (In Two Parts). 2. Cocurrent Extraction and Centrifuge Tests.
NTIS: PB 215 624 :19 pages
The Bureau of Mines has developed a technically feasible continuous single-stage leaching and thickening system for extracting manganese from umber by a sulfuric acid-ferrous sulfate process; the cocurrent leaching and thickening system proved simpler to operate and control than the countercurrent leaching and thickening system developed earlier. Related tests investigated the use of a centrifuge to replace thickeners for separating the product liquor from ore residues and compared several chemical agents for removing iron from the pregnant manganese leach solutions. Results of some exploratory autoclaving tests are also given. Work done in cooperation with the University of Alabama.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 215 624
Page last reviewed: December 10, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division