HAN Bin1,2,3,4, YANG Bo1,3,4, TONG Xiong1,3,4, JIA Su-e2
(1. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Yunnan Hualian Zinc & Indium Stock Co.,Ltd., Wenshan 663701, China; 3. Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources, Kunming 650093, China; 4. International Science & Technology Cooperation Base for Comprehensive Utilization of Complex Mineral Resources in Yunnan Province, Kunming 650093, China)
Abstract: Changes in micromorphology and phase composition were discussed by using chemical element analysis, SEM, EDS and XRD technology. Results show that the main marketable elements are lead and silver, with contents of 0.67 % and 16.51 g/t, respectively. Silver mainly appears fine granular or class in phase occurrence in galena, and carrier galena of silver is the main target of recycling. On this basis, reasonable mineral processing flowsheet and regime of agent were studied for tailings. The grinding fineness, collector type, dosage, and selection of slurry pH value on the influence of the flotation process were also discussed. The grinding fineness is 80% of 0.074 mm with butyl xanthate as a collector, the dosage of 80 g/t, lime as adjusting agent, and agent system of slurry pH=11.0. The concentrations of lead and silver of 6.41% and 147.09 g/t, with recovery of 63.38%, 58.59% respectively can be obtained by three-time flotation processes.
Keywords: flotation; tailings; silver; galena
E-mail：xiongtong2000@yahoo.com
ACTA MINERALOGICA SINICA Vol. 36, No. 3, 2016, Page 365-370
