A high sulfur lead-zinc ore in Yunnan,China was taken as the object,the lead and zinc grades were 6.90％and 22.44％.Under the grinding fineness-0.074 mm account for 67％,and the technical process of"Pb/S bulk flotation-Pb/S separation-Zn flotation"was adopted for flotation separation,the combination of lime and PDJ was used as pyrite depressant,and and SPC was used as sphalerite collector.The lead concentrate with lead grade of 62.86％,zinc content of 5.73％,and lead recovery of 86.11％,and the total zinc concentrate with zinc grade of 54.81％,lead content of 1.16％and zinc recovery of 89.97％were obtained.The combination of PDJ and lime reduced 4 000 g/t lime and reduced the Ca2+content in recycling water,avoiding the depressing effect of Ca2+in recycling water on the flotation of pyrite in Pb/S bulk flotation stage.Compared with butyl xanthate,when SPC is adopted,the amount of CuSO4 is reduced by 100 g/t,and the Zn flotation rate was largely increased.
维普
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