Study on Beneficiation of a Stanniferous Multi-metallic Sulphide Ore in Yunnan
ZHANG Jin-lu GE Bao-liang WANG Xian-qiang YANG Chun-gang
Faculty of Land and Resource Engineering, Kunming University of Science and Technology Faculty of Land and Resource Engineering, Kunming University of Science and Technology Faculty of Land and Resource Engineering, Kunming University of Science and Technology Faculty of Land and Resource Engineering, Kunming University of Science and Technology
Abstract：Mineralogy and beneficiation of a stanniferous multi-metallic sulphide ore in Yunnan were studied. The results show that the content of lead and zinc in the ore is low, which have the nature of uneven dissemination sizes. The lead minerals are closely associated with zinc ones, so the selective flotation of lead minerals is firstly adopted, and flotation of zinc ones followed, based on the character of big floatability difference between lead and zinc minerals. Ethyl xanthate is adopted as the collector of lead, and lime, sodium sulfite and zinc sulfate as the depressors of zinc and sulphur minerals for selective flotation of lead minerals, and copper sulfate as the activator of sphalerite for flotation of zinc minerals from the tailings of lead flotation. Cassiterite has closely symbiotic relationship with pyrite and pyrrhotite with very small particle sizes. The gravity-magnetic combined flow sheet is adopted to recover tin minerals from the tailings of selective flotation of zinc following the desulfurization flotation. After the closed circuit flotation experiments, the lead concentrate containing 40.92% lead is obtained with lead recovery rate of 81.25%, silver enrichment of 1610.53 g/t and silver recovery rate of 77.03%, zinc concentrate containing 43.23% zinc with zinc recovery rate of 85.92%, sulphur concentrate containing 42.57% sulphur with sulphur operation recovery rate of 87.65%, and tin concentrate containing 42.38% tin with tin operation recovery rate of 59.29%.
张晋禄 戈保梁 王显强 杨春刚. 云南某含锡多金属硫化矿选矿实验研究[J]. 过程工程学报, 2015, 15(6): 945-953.
ZHANG Jin-lu GE Bao-liang WANG Xian-qiang YANG Chun-gang. Study on Beneficiation of a Stanniferous Multi-metallic Sulphide Ore in Yunnan. Chin. J. Process Eng., 2015, 15(6): 945-953.
2015, Vol. 15 
