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在现场的试验过程中 ,矿石在还原气氛中磨矿 ,用非常规捕收剂 (即不同于黄药类捕收剂 )调浆 ,通过添加双氧水将矿浆电位 (Eh)提高到约 0 3V ,可提高含有黄铁矿的细粒复杂矿石中方铅矿和黄铜矿的优先浮选指标。试验结果表明 ,方铅矿和黄铜矿的回收率 (即可浮性 )分别在 0 3 2V和 0 2 7V左右达到最大。与这些矿物相比 ,伴生的闪锌矿与黄铁矿的回收率很低。银、金、闪锌矿和黄铁矿的浮选行为与黄铜矿相似表明 ,这些进入精矿的组分是与上浮的黄铜矿连生而非单体。
During the field test, the ore was ground in a reducing atmosphere, slurried with unconventional collectors (ie, different from xanthate collectors), the slurry potential (Eh) was increased to about 0 3 V by adding hydrogen peroxide, Can increase the flotation index of galena and chalcopyrite in fine-grained complex ores containing pyrite. The experimental results show that the recovery rates of galena and chalcopyrite (ie floatability) reach the maximum at 0 3 2 V and 0 2 7 V, respectively. Compared with these minerals, associated sphalerite and pyrite recovery rate is very low. The flotation behavior of silver, gold, sphalerite and pyrite is similar to that of chalcopyrite, indicating that the components that enter the concentrate are not linked to the floating chalcopyrite.