Land use issues in mineral extraction

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Publication: CIM Bulletin
Author(s): Wouter Bleeker
Issue: 985
Volume: 87
Year: 1994
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Summary: Continuous in-plant testing of collectorless Cu/Pb bulk flotation on Lyon Lake ore at Matlabi Mines Ltd. was conducted using a portable circuit based on 5 L mini flotation cells. It is concluded that collectorless Cu/Pb flotation is a reliable phenomenon for this ore over the usual range of plant operating conditions.
Publication: CIM Bulletin
Author(s): M. Leroux, S.R. Rao, J .A. Finch, J. Kim
Issue: 985
Volume: 87
Year: 1994
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Summary: The Whitehorse Mining Initiative (WMI) brought together all of the key stakeholders in Canada's mining industry to develop a framework whereby the industry can meet the challenges that it faces into the 21st century. The WMI Accord, which was signed at the annual Mines Ministers Conference in Victoria, British Columbia, on September 13, 1994, touches all of the important issues that confront the industry, including taxation.
Publication: CIM Bulletin
Author(s): Robert B. Parsons
Issue: 985
Volume: 87
Year: 1994
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Summary: Discrete transfer functions which use the grinding circuit feed tonnage to predict mass flowrates at reagent addition points in a flotation circuit were calibrated using a dynamic grinding/flotation circuit simulator. Predicted mass flow values are multiplied by reagent addition ratios to obtain actual reagent flow. The transfer functions are currently integrated into the distributed control system of Les Mines Selbaie.
Publication: CIM Bulletin
Author(s): Claude Bazin, Robin Perry
Issue: 985
Volume: 87
Year: 1994
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Summary: Brunswick Mining has investigated grinding media optimization for the purpose of improving the location feed and regrind product size distributions to enhance metal recoveries. This paper presents the findings of on-going testing of various sizes and shapes of grinding media. Plant observations combined with estimated breakage rates demonstrate the importance of appropriate selection of media sizes on the milling operation.
Publication: CIM Bulletin
Author(s): M. Cooper, C. Bazin, R. Grant
Issue: 985
Volume: 87
Year: 1994
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Summary: An information system has been developed for the use ofcompanies considering developing a new mine which may be liable to secondary sulphide ignitions or by existing operations. The system uses the Comdale X expert system to analyze information about a particular mine. The system will indicate whether the mine is likely to experience ignitions and what precautions can be taken to reduce or prevent their occurrence. The advantage of an information system using expert system and artificial...
Publication: CIM Bulletin
Author(s): A. Burkert, A.E. Hajj
Issue: 985
Volume: 87
Year: 1994
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Summary: The Quebrada Blanca Copper Mine is an open pit copper project located at 4200 m elevation in the Chilean Andes. The deposit is a world-class supergene enriched porphyry with a mining reserve of 89 Mt of 1.3% copper. The supergene zone will produce 6.3 Mt of ore per year for more than 15 years to produce 75 000 t of cathode copper per year. This paper will review the project geology. the computer modelling of the deposit, the mine planning process and the property production scheduling. With...
Publication: CIM Bulletin
Author(s): J.H. Gray, B.R. McEwen, A.N. Samis
Issue: 985
Volume: 87
Year: 1994
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Summary: Solids concentration (weight % solids) profiles and the clear liquid/slurry interface level (mud-line) were determined from conductivity measurements in thickeners at Falconbridge's Strathcona mill (Ni concentrate and non-mag thickeners) and Kidd Creek Division (Cu, Zn concentrates and final tails in the concentrator and a jarosite thickener in the Zn plant). The conductivity measurement system consisted of a probe 1.5 m in length with 23 electrode cells, a 24-channel relay, a conductivity...
Publication: CIM Bulletin
Author(s): M. Xu, A. Probst, J.A. Finch
Issue: 985
Volume: 87
Year: 1994
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Summary: To date, bacterial oxidation for the treatment of refractory gold ores and concentrates has not been selected for commercial application in North America. The reasons why the domestic mining industry has not adopted this method of pre-oxidation cannot all be technical. Biooxidation is currently the process of choice for 20% of recent refractory gold treatment plants worldwide. If Canada and the United States, where there are no plants, are excluded, the number of recently installed operations...
Publication: CIM Bulletin
Author(s): Richard W. Lawrence
Issue: 985
Volume: 87
Year: 1994
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