Operating strategies to maximise gold recovery at Telfer |
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| Authors: | X Zheng P Manton F Burns A Crawford P Griffin |
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| Affiliation: | 1. The Robert M. Buchan Department of Mining, Queen''s University, Goodwin Hall, 25 Union Street, Room 354, Kingston, Ontario K7L 3N6, Canada;2. Izmir Metropolitan Municipality, Directorate of Healthy Cities and Clean Energy, Izmir, Turkey;1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;2. Cleaner Metallurgical Engineering Research Center, China Nonferrous Metals Industry Association, Changsha 410083, China;1. Centre for Minerals Research, University of Cape Town, Rondebosch, South Africa;2. Pilanesberg Platinum Mines, Centurion, South Africa;1. School of Chemical Engineering, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia;2. Pionera, P. O. Box 162, NO-1701 Sarpsborg, Norway;3. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada |
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| Abstract: | On average, the difference in recovery between copper and gold is 15% among the large scale copper/gold operations. At Telfer, a number of operating strategies have been implemented together with a sequential flotation circuit design to maximise gold recovery. The main operating strategies include targeting a primary grind size optimum for copper recovery, designing and operating the main flotation circuit as copper and pyrite sequential flotation, targeting a minimum saleable concentrate copper grade, allowing a portion of pyrite/gold recovered into the copper concentrate and leaching the pyrite concentrate to extract the gold. These operating strategies have lifted the recovery of both copper and gold above 90%. There are opportunities to further improve the metallurgical performance at Telfer, including a single stage of cleaning of the copper rougher concentrate, regrinding of the copper scavenger concentrate prior to cleaning and regrinding of the pyrite rougher concentrate followed by additional copper/gold flotation prior to pyrite leaching. |
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