Practice of optimizing flotation process of copper-nickel separation in Hami

There were some problems，such as low-grade copper concentrate，nickel concentrate containing high copper，higher reagents dosage，poor separation efficiancy，etc.，during copper nickel separation of flotation process on sulfide nickel copper ore in Xinjiang Yakesi resource development incorporated company，Hami district，Xinjiang Uygur Autonomous region.The technical measures including adjusting the flotation process，improving the variety and addition of the reagents，optimizing the active carbon’s adding device，etc.were taken to improve it，according to the variation of ore properties and production statistics.Productive practice shows that separation flowsheet of copper and nickel flotation by two roughers two scavengers four cleaners，dosing device modified and active carbon of nuts shell，pipeline material and use configuration changement，etc.are key factors to achive flotation separation process stability and production technology index improvement.The grade of copper concentrate increased from 23.72% to 25.46%，the associated gold content more than 1 g/t，and copper nickel concentrate is down to from 0.705% to 0.493%.Meanwhile，activated carbon consumption decreased from 316 g/t to 137 g/t，the lime consumption from 2 035 g/t to 1 239 g/t.Additional economic benefits was over two million six hundred nine thousand yuan and technological transformation achieved remarkable effects.