利用浮选法,在有Na_2S及硫酸和Fe~(3+)离子的混合液条件下,采用加抑制剂的处理法从被铜活化的闪锌矿中分离黄铁矿。在含有Na_2S的碱性溶液中,完全阻止了铜离子的吸附。在用Na_2S处理液,用NaCN作闪锌矿的抑制剂进行优先浮选,则在碱性溶液中Cu与Zn矿物可有效分离,用Na_2S与亚硫酸配合,则闪锌矿的浮选完全受到抑制。在含有硫酸的500～1000毫克Fe~(3+)/升的溶液中,用铜活化的闪锌矿可达到完全抑制。温度和O_2是抑制的重要因素。在硫酸和Fe~(3+)离子的溶 Using flotation method, the pyrite was separated from the copper activated sphalerite by the addition inhibitor method in the presence of Na2S and a mixture of sulfuric acid and Fe3 + ions. In an alkaline solution containing Na 2 S, the adsorption of copper ions is completely blocked. In Na_2S treatment solution, NaCN as a sphalerite inhibitor for preferential flotation, the Cu and Zn minerals in alkaline solution can be effectively separated with Na2S with sulfurous acid, the flotation of sphalerite completely affected inhibition. Complete inhibition can be achieved with copper-activated sphalerite in solutions containing 500-1000 mg of Fe3 + in sulfuric acid. Temperature and O2 are the important factors of inhibition. In the sulfuric acid and Fe ~ (3 +) ions dissolved