采用硫酸浸出和添加酒石酸钾钠的氢氧化钠浸出从Yahyali非硫化浮选尾矿中回收锌和铅.在酸浸阶段,研究pH值、固液比和温度对尾矿中锌溶出的影响.在pH值为2、温度为40 ℃、固液比为20％、浸出时间为2 h的条件下,锌的溶出率达到82.3％,而铁和铅的溶出率低于0.5％.硫酸消耗量为110.6 kg/t(干尾矿).浸出温度对尾矿中锌的溶出无有益的影响.酸浸液的电积试验结果表明,阴极产物含99.8％的Zn和0.15％的Fe.在碱浸阶段,添加酒石酸钾钠时铅的溶出率略有增加,浸出温度从40 ℃升高到80 ℃时,超过60％的Pb进入浸出液中.利用XRD和XRF分析最终的浸出渣.XRD分析结果表明,主要衍射峰来自针铁矿和石英,次要衍射峰属于菱锌矿和白铅矿.XRF分析结果显示,浸出渣含有70.3％的氧化铁.基于顺序浸出实验结果,浮选尾矿中的锌和铅可以被很好地浸出,而大量的铁留在浸出渣中.“,”The recovery of zinc and lead from Yahyali non-sulphide flotation tailing using sulfuric acid followed by sodium hydroxide leaching in the presence of potassium sodium tartrate was experimentally investigated. In the acidic leaching stage, the effects of pH, solid-to-liquid ratio and temperature on the dissolution of zinc from the tailing were explored. 82.3％ Zn dissolution was achieved at a pH of 2, a temperature of 40 ℃, a solid-to-liquid ratio of 20％ and a leaching time of 2 h, whereas the iron and lead dissolutions were determined to be less than 0.5％. The sulfuric acid consumption was found to be 110.6 kg/t (dry tailing). The leaching temperature had no beneficial effect on the dissolution of zinc from the tailing. The acidic leach solution was subjected to an electrowinning test. The cathode product consisted of 99.8％ Zn and 0.15％ Fe. In the alkaline leaching stage, the Pb dissolution increased slightly in the presence of potassium sodium tartrate. More than 60％ of Pb was taken into the leach solution when the leaching temperature increased from 40 to 80 ℃. The final leach residue was analyzed by XRD and XRF. The XRD results indicated that the major peaks originated from the goethite and quartz while minor peaks stem from smithsonite and cerussite. The XRF analysis demonstrated that the residue contained 70.3％ iron oxide. Based on the sequential leaching experiments, the zinc and lead were excellently depleted from the flotation tailing, leaving a considerable amount of iron in the final residue.