Abstract
A column-flotation system was designed to conduct release analyses on a very finely disseminated, stratiform copper ore from the Denali Copper Prospect in Alaska. Chalcopyrite is finely disseminated in a carbonate matrix, and pyrite is disseminated in both the chalcopyrite and the gangue. Grinding to −20 µm is required for adequate liberation.
A 25-mm × 2.4-m glass flotation column was designed. The ore and its flotation tailings were repeatedly floated to obtain a rougher concentrate. The rougher concentrate was then repeatedly floated to produce release fractions. These fractions were analyzed for copper, iron, calcium and magnesium, and release curves were plotted. The procedure was replicated at each of two grinds, i.e., 99% and 88% passing 37 µm (400 mesh).
The procedure should find application for flotation characterization and process selection. Bond grindability testing was also conducted.
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References
Bundtzen, T.K., et al., 1991, Alaska’s Mineral Industry 1991, Division of Geological and Geophysical Surveys, State of Alaska, Report No. 46. Fairbanks, AK.
Cook, D.J., and Rao, P.D., 1970, Preliminary Metallurgical Tests on Denali Copper Ore, Report to Bacon and Crowhurst Ltd., Consulting Engineers, from Mineral Industry Research Laboratory, University of Alaska Fairbanks, Fairbanks. AK.
Dell, C.C., et al., 1972. Release Analysis: A Comparison of Techniques, London: Institution of Mining and Metallurgy, June, pp. C89-C96.
Martin, C., 1970, Memorandum No. 1: Flotation of Denali Copper Ore, CSMRI Project No. 200331, Colorado School of Mines Research Institute, Golden, CO.
McClintock, W.W., 1990, Unpublished Internal Report. Mineral Industry Research Laboratory. University of Alaska Fairbanks, Fairbanks, AK.
Stevens, D.L., 1971, “Geology and geochemistry of the Denali Prospect. Clearwater Mountains, Alaska,” Ph.D. Dissertation, University of Alaska Fairbanks, Fairbanks, AK.
Taylor, J.C., and Traulsen, H.R. (eds), 1987, The World Survey of Nonferrous Smelters, Publication of the Metallurgical Society, Inc., AIME, Warrendale, PA.
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SME Preprint 94-000, SME Annual Meeting, Feb. 14–17, 1994, Albuquerque, NM. M&MP paper 94–623.
Discussion of this peer-reviewed and approved paper is invited and must be submitted, in duplicate, prior to Aug. 31, 1995.
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McClintock, W.W., Walsh, D.E. & Rao, P.D. Release analysis of a stratiform copper sulfide ore using column flotation. Mining, Metallurgy & Exploration 12, 112–117 (1995). https://doi.org/10.1007/BF03403088
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DOI: https://doi.org/10.1007/BF03403088