For separation of a Cu Pb Copper Lead Zinc sulfide ores Yunnan exist in the production index is not over, the copper-containing lead concentrate of high intermodulation problems, Yang Wu Jia copper concentrate were mixed Pb, Cu, Pb flotation separation. The results show that, when mixed concentrate regrinding to 80% -0.074 mm, sodium sulfite, sodium silicate and a combination of CMC inhibitor instead of suppressing weight chromium potassium galena to Z-200 acetate instead of xanthate as chalcopyrite The collector can obtain good sorting technical indicators, the copper concentrate grade is 23.30%, the lead content is 3.30%, the aluminum concentrate grade is 64.66%, and the copper content is 0.50%, which effectively achieves the separation of copper and lead. Qinghai against a copper ores of lead and zinc sulphides disseminated coarse grain size, characteristics of low copper, copper and the like Liu Shouxin selected from mixed Pb - Pb mixed refined separation - is selected from zinc tailings were sorting process Experimental Research. When combined with copper and lead, Ty-1 and zinc sulfate are used as combination inhibitors of sphalerite and iron sphalerite. Ethyl xanthate and J-21 are used as collectors to achieve effective copper, lead minerals and zinc minerals. Separation, and the viscosity of the foam is moderate, which creates favorable conditions for the separation of copper and lead in the next step; the separation of copper and lead is activated carbon, CMC-potassium dichromate method and lead-free copper, which realizes the effective separation of copper-lead minerals and obtains ideal beneficiation. Technical indicators. Ren Xiangjun et al. determined the use of copper-lead preferential flotation, water glass + sodium sulfite + carboxymethyl cellulose combination inhibitor for copper-lead separation and copper-lead mixed floatation through another copper-lead-zinc polymetallic sulphide ore. The experimental scheme of flotation of zinc minerals after activation of copper sulfate by tailings was systematically studied, and the effective separation of copper and lead was successfully achieved. Finally, copper concentrate with copper grade of 21.40% and copper recovery of 67.65% was obtained. The grade is 52.92%, the lead recovery rate is 95.90%, the lead concentrate and zinc grade are 50.21%, and the zinc recovery rate is 83.74% zinc concentrate. For a copper-lead-zinc polymetallic sulphide ore in Liaoning, Liu Yalong et al. used a copper-lead mixed-copper-lead separation-mixed floating tailings to suppress the sulphur-spraying zinc flotation process. Mixed flotation with ethyl sulphide nitrogen + aniline black drug as collector, ZnS0 4 + Na 2 S0 3 as inhibitor, and control of pulp pH = about 11.5, to achieve separation of copper-lead minerals and zinc-sulfur minerals; application of water glass , sodium sulfite and carboxymethyl cellulose combination inhibitors, instead of cyanide and potassium dichromate, successfully achieved copper and lead separation; through closed circuit test, copper concentrate with copper grade of 28.54% copper recovery rate of 65.62%, lead The grade is 55.69%, the lead recovery rate is 83.21%, the lead concentrate and zinc grade are 51.09%, and the zinc recovery rate is 90.87%. According to the nature of a complex refractory copper-lead-zinc polymetallic ore in Tibet, Li Guanqi conducted a separation experiment using the principle flow of copper-lead mixed flotation-copper-lead separation-copper-lead floating-tail zinc. The copper-lead mixed flotation adopts Bp. The combination of butylammonium black and xanthate is a combination of sodium sulfide, zinc sulfate and sodium carbonate as an inhibitor of zinc minerals; when copper and lead are separated, activated carbon is used for drug removal, using CMC, Na 2 S0 3 and As an inhibitor of lead minerals, Na 2 Si0 3 environmentally friendly combination agent has successfully achieved copper-lead separation, and the sorting technical index obtained has been greatly improved compared with current production. Zheng Yajie et al. conducted a flotation separation test on a high arsenic, low copper lead, zinc and silver ore in Inner Mongolia. The test uses copper, lead and zinc, etc., which can be floated and then preferentially floated. The use of FN as an inhibitor of arsenic minerals effectively solves the problem of high arsenic in copper concentrates, not only without the use of toxic inhibitor potassium dichromate, but also Significantly improved copper concentrate grade. The copper concentrate grade obtained by the test was 28.6%, the copper recovery rate was 66.41%, and the recovery rates of lead, zinc and silver were also greater than 90%. Luo Jin conducted a sulfide flotation test on lead oxide ore in a complex high-oxidation lead-zinc ore. It was found that when Na 2 S was used as the vulcanizing agent for lead oxide, not only the proper amount of Na 2 S was needed, but also the initial concentration of Na 2 S was required. The grade and recovery rate of lead concentrate reached 46.02% by vulcanization flotation method. And 81.16%, effective recovery of lead oxide minerals. In view of the fact that lead-zinc minerals in a refractory lead-zinc ore in Turpan are mutually metasomatized and wrapped, with fine grain size and difficult dissociation characteristics, Wang Fengshui has adopted a preferential process of selecting lead and zinc coarse concentrate for re-grinding and re-election. Experimental Research. Under the conditions of lead rough grinding grinding fineness -0.074 mm, 80%, zinc rough grinding grinding fineness -0.043 mm, 90%, lead grade 40.22%, Zn 6.94%, lead recovery rate 82.48% The lead concentrate and zinc grade are 50.17%, and the zinc concentrate containing Pb 1.08% and zinc recovery rate of 86.92%. Feng Zhongwei discovered through flotation experiments on a lead-zinc mine in Yunnan that soluble salts such as zinc sulfate and ferrous sulfate in the ore have a strong inhibitory effect on lead-zinc minerals, in order to reduce the soluble salt to lead-zinc mineral flotation. The effect is to use the alkali-free process of flotation of lead-zinc minerals under the natural pH condition of the pulp. When lead is selected, zinc sulfate and sodium sulfite are used as inhibitors of zinc minerals, and aniline black and butylammonium black are used as collectors. When zinc is used, water glass, sodium sulfite and carboxymethyl cellulose are used as adjusting agents, and PN-405 is used as collector. Finally, the lead grade is 59.57%, the lead recovery rate is 75.14%, and the lead concentrate and zinc grade are 53.93%. A zinc concentrate with a recovery rate of 93.70%. In view of the high degree of oxidation, easy muddy, and difficult recovery of zinc oxide minerals in a lead-zinc ore in Shaanxi Province, Wang Hongmei and others used lead sulfide minerals and oxide minerals mixed flotation, zinc sulfide minerals and oxide minerals in turn. A systematically studied study was conducted on a separate recovery scheme. When the lead is selected, the combined collector ethanesulfide nitrogen + butyl black liquor is used, and when the zinc oxide mineral is selected, the composite collector A-928 is used. Finally, lead concentrates with a lead grade and recovery rate of 53.67% and 82.92%, respectively, containing 5.23% zinc, zinc grade and recovery rates of 51.08% and 40.75%, zinc sulfide concentrate containing 1.06% lead, zinc grade were obtained. The recovery rate is 22.55%, 44.28%, and 1.22% lead oxide concentrate, which achieves effective separation of lead-zinc ore.
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