Upgrading valuable mineralization and rejecting magnesium silicates by pre-concentration of mafic ores

• Autorzy: Altun N. E. , Weatherwax T. , Klein B.

Identyfikatory

DOI

10.5277/ppmp140117

• Języki publikacji: EN

Abstrakty

EN

Amenability of mafic ores to pre-concentration was investigated with respect to ore mineraliza-tion characteristics. For the pre-concentration tests seven ores from various nickel-copper operations at Sudbury, Ontario were subjected to dense medium separation. Size assays of metal values, i.e. distribution of nickel and copper with respect to size fractions, were also determined. The ores were assessed in three categories of valuable mineralization as massive pure sulphides, coarse massive sulphide grains and disseminated sulphides. For ores with massive pure sulphides and coarse massive sulphide grains even a size classification based pre-concentration route could be sought since a clear trend of metal enrichment was identified towards finer fractions. Orebodies of similar mineralogy had similar responses to pre-concentration tests. The best results were for those ore bodies with a distinct differentiation between mineralization and gangue, i.e. the ores with massive pure sulphides, where nickel recoveries of 97% and mass rejections of 38-53% were achieved. Similar results were obtained for ores with coarse massive sulphides. For disseminated sulphide mineralogy relatively lower mass rejection was attained with acceptable recoveries of metals. Rejection of magnesium bearing gangue, such as talc, was identified as another benefit of pre-concentration. The extent of magnesium rejection occurred as a function of ore mineralogy. Clear distinction between valuable mineralization and gangue provided preferential magnesium rejection at high levels with no or minor metal losses.

Słowa kluczowe

EN

mafic ores; preconcentration; dense media separation; metallic sulphides; ore mineralogy

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2014
• Tom: Vol. 50, iss. 1
• Strony: 203--215
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Altun N. E.

• Mugla University, Mining Engineering Department, 48000, Mugla, Turkey

autor

Weatherwax T.

• Norman. B. Keevil Institute of Mining Engineering, University of British Columbia, Vancouver, BC, Canada

autor

Klein B.

• Norman. B. Keevil Institute of Mining Engineering, University of British Columbia, Vancouver, BC, Canada

Bibliografia

• 1. BAMBER A.S., KLEIN B., SCOBLE M.J., 2006, Integrated Mining and Processing of Massive Sulphide Ores, Proceedings, 39th Ann7ual General Meeting of the Canadian Mineral Proc., Ottawa, 01/2006.
• 2. FEASBY D.G., TREMBLAY G.A., 1995, Role of Mineral Processing in Reducing Environmental Liabil-ity of Mine Wastes, Proceedings, 27th Annual CMP Meeting, Ottawa, 218–231.
• 3. FIEDLER K.J., MUNRO P.D., PEASE J.D., 1984. Commissioning and operation of the 800 t/h heavy medium cyclone plant at Mount Isa Mines Limited. Pro. Australasian Institute of Mining and Metal-lurgy, Darwin, Australia 1984. C41–C49.
• 4. HINDE A.L., FRANKENHAUSER R.M., KRAMERS C.P., 1986, The Benefits of Reducing the Transport, Hoisting and Processing of Barren Rock in Witwatersrand Gold Mines, Proceedings of the SAIMM International Conference on Gold, 333–343.
• 5. LLOYD P.J.D., An Integrated Mining and Extraction System for Use on Witwatersrand Gold Mines, Journal of the SAIMM, Vol. 79, January 1979.
• 6. KLEIN B., DUNBAR W.S., SCOBLE M., 2002, Integrating Mining and Mineral Processing for Ad-vanced Mining Systems, CIM Bulletin, Vol. 95, No. 1057, 63–68.
• 7. KLEIN B., HALL R., SCOBLE M., MORIN M., 2003, Total Systems Approach to Design for Under-ground Mine-Mill Integration, CIM Bulletin, Vol. 97, No. 1067, 65–71.
• 8. LLOYD P.J.D., VAN DER WALT J., Critical Issues in Gold Mining: An Independent View, Proceedings of the International Conference on Gold, SAIMM, Johannesburg 1986.
• 9. MILLER V.R., NASH R.W., SCHWANEKE A.E., 1978. Pre-concentration of Native Copper and Porphyry Copper Ores by Electronic Sorting. Mining Engineering 1978:1194-1201.
• 10. MUNRO P.D., SCHACHE I.S., PARK W.G., WATSFORD R.M.S.,. 1982. The Design, Construction, and Commissioning of a Heavy Medium Plant for Silver-Lead-Zinc Ore Treatment – Mount Isa Mines Limited. XIV International Mineral Processing Congress. Toronto, 1982: 2–21.
• 11. PETERS O., SCOBLE M., SCHUMACHER T., 1999, The technical and economic potential of mineral processing underground. Annual General Meeting, Can. Inst. Min. Metall., Calgary, CD ROM.
• 12. SALTER J.D., WYATT N.P.G., 1991, Sorting in the Minerals Industry: Past, Present and Future, Miner-als Engineering, Vol 4, No 7–11, 779–796, 1991.
• 13. SCHENA G.D., GOCHIN R. J., FERRARA G., 1990, Pre-concentration by dense-medium separation – an economic evaluation, Trans. Instsn. Min. Metall. (Sect. C: Mineral Process. Extr. Metall.), 99, January-April 1990, C21–C31.
• 14. SCOBLE M., KLEIN B., DUNBAR W.S., 2000, Mining waste: Transforming mining systems for waste management, 6th Int Conf on Environmental Issues and Mining Production, Calgary, 333–340.
• 15. VATCHA M.T., COCHRANE L.B., ROUSELL D.H., 2000, Pre-concentration by magnetic sorting of Ni–Cu ore at Whistle mine, Sudbury, Canada, Mineral Processing and Extractive Metallurgy, Volume 109, Number 3, 156–160 (5).