Flowsheet development for the Kamoa project – A case study |
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| Affiliation: | 1. Xstrata Process Support, 6 Edison Road, Falconbridge, Ontario, Canada P0M 1S0;2. Ivanplats, 82 Maude St., Sandton, South Africa;1. Co-operative Research Centre for Optimising Resource Extraction (CRC ORE), Brisbane, Australia;2. Julius Kruttschnitt Mineral Research Centre (JKMRC), The University of Queensland, Brisbane, Australia;3. AGORATEK International Consultants Inc., Canada;1. Programa de Tecnologia de Processos Químicos e Bioquímicos, Escola de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil;2. School of Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, OK 73019, USA;1. CSIR- Institute of Minerals and Materials Technology, Bhubaneswar 751013, India;2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India;1. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;2. Yunnan Chihong Zn & Ge Co., LTD, Qujing 655000, Yunnan, China;3. Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources, Kunming 650093, Yunnan, China;1. Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China;2. Guangdong Institute of Resources Comprehensive Utilization, Guangzhou, 510650, China;3. Hunan Academy of Forestry, Changsha, Hunan, 410004, China;4. School of Chemical Engineering, The University of Queensland, St Lucia, 4072, QLD, Australia;5. Department of Chemical Engineering, Perm National Research Polytechnic University, Perm, 614990, Russia |
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| Abstract: | Ivanplats Ltd. appointed Xstrata Process Support to perform the flowsheeting development work for their hypogene and supergene geomet units of the Kamoa Copper deposit, located west of Kolwezi in the Democratic Republic of the Congo. Through appropriate use of Gy’s sampling and subsampling models, and systematic flowsheet development using modern Process Mineralogy, an optimised Milestone Flowsheet was developed, delivering a final concentrate grade of 32.8% Cu at 85.4% recovery with hypogene ore, and 45.1% Cu grade at a recovery of 83.4% for supergene ore. These results were obtained from representative samples of drill-core, quantitative mineralogy and high-confidence flotation testing. The significant value of this development is that a single flowsheet will treat both hypogene and supergene ores and produce treatable concentrates. Further work to advance the flowsheet performance beyond this milestone benchmark, and to perform variability testing for this resource, has been identified for investigation in the near future. |
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