Liannan low-grade copper oxide ore leaching technology

Even South copper oxide ore, when high grade ore (6-11%) Using L - recycling electrowinning copper leaching rate, to reach 93-98% copper. In the mined ore, there are some low-grade copper oxide ore containing 1.34% copper, of which copper oxide accounts for 73.13%, combined copper accounts for 16.42%, and copper sulfide accounts for 10.45%. It must be firstly enriched by flotation and then re-concentrated. Leaching. We have carried out the ore dressing test on the ore. The process flow is: grinding the ore to -200 mesh, accounting for 64%, using sodium sulfide as the adjusting agent, using the diced xanthate and hydroxamic acid as the collector, and the 2# oil as the starting agent . The foaming agent is subjected to a rough selection and one sweep to obtain a coarse concentrate. The yield of the coarse concentrate is 20.75%, the copper content is 6.13%, and the recovery rate is 83%.

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