Taconite Process Water and Tailing Water Quality Cationic-Exchange Effect on Balling and Flotation: Final Report

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Title

Taconite Process Water and Tailing Water Quality Cationic-Exchange Effect on Balling and Flotation: Final Report

Published Date

1999-10

Publisher

University of Minnesota Duluth

Type

Technical Report

Abstract

A research project supported by the Minnesota Department of Natural Resources and the Iron Ore Cooperative Research Committee was undertaken to 1) evaluate the problems related to cation exchange mechanisms that occur during wet grinding, flotation and balling and 2) investigate ionic formation and precipitation that occurs in the processwater during taconite processing. The cation exchange capacities of rod mill feed samples from two taconite plants were determined. Ball mill grinding, magnetic separation, bench scale flotation and balling tests were performed to establish the effect that cation exchange has on flotation and balling. Tests indicate that balling and flotation are affected by the cation exchange capacity of processed taconite ore. The rate of formation of sulfate, fluoride and bicarbonate anions during the grinding of taconite rod-mill-feed was determined. Sulfide oxidation to sulfuric acid followed by neutralization with carbonate minerals was studied. Fluoride liberation from the taconite ore was also investigated.

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Final Report

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Series/Report Number

NRRI Technical Report;NRRI/TR-99/23
CMRL Technical Report;CMRL/TR-99-15

Funding information

Natural Resources Research Institute, University of Minnesota Duluth, 5013 Miller Trunk Highway, Duluth, MN 55811-1442; Coleraine Minerals Research Laboratory, One Gayley Avenue, PO Box 188, Coleraine, MN 55722

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Engesser, John. (1999). Taconite Process Water and Tailing Water Quality Cationic-Exchange Effect on Balling and Flotation: Final Report. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/188533.

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