Evaluation of the response of valuable and gangue minerals on a recovery,size and liberation basis for a low-grade silver ore |
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| Affiliation: | 1. Ruhr-University Bochum, Institute of Geology, Mineralogy and Geophysics, 44780 Bochum, Germany;2. V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;3. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;4. Geoforschungszentrum Potsdam, Germany;1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China;2. Faculty of Land and Rescource Engineering, Kunming University of Science and Technology, Kunming 650093, China;3. Faculty of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;4. Beijing General Research Institute of Mining & Metallurgy, Beijing 100044, China;5. College of Zijin Mining, Fuzhou University, Fuzhou 350116, China;1. College of Resources and Civil Engineering, Northeastern University, Shenyang, China;2. State Key Laboratory of Mineral Processing, Beijing, China;3. National-local Joint Engineering Research Center of High-efficient Exploitation Technology for Refractory Iron Ore Resources, Shenyang, China |
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| Abstract: | Mineralogical characterisation is typically used to assist in the development of processing strategies for ores. This paper describes the application of mineralogical characterisation techniques in the development of flotation strategies for processing an ore from a low-grade silver deposit that contains a variety of rock types that have undergone hydrothermal alteration where zinc, lead and silver sulphides are typically the primary minerals of economic interest. Comprehensive mineralogical characterisation of the feed, concentrates and tailings from batch flotation tests was undertaken using both the mineral liberation analyser (MLA) and laser ablation inductively-coupled plasma mass spectroscopy (LA-ICP-MS). The results of mineralogical characterisation of the feed (head grade, 116 ppm) indicated that the majority of the silver occurred as solid solution in pyrite which assisted in the development of the flotation strategy used for this ore which resulted in approximately 87% of the total silver being recovered to rougher concentrate at a grade of 485 ppm. |
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| Keywords: | Low-grade silver ores Flotation Sulphidization Mineralogy Process mineralogy |
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