【摘要】 四川某复杂铅锌矿由于矿石性质发生变化，铅选别生产回收率偏低且铅精矿含锌较高，选矿技术指标不理想，严重影响企业经济效益。针对现场生产问题，在原矿工艺矿物学研究的基础上，着重对铅选别过程进行了选矿工艺技术优化试验研究，通过使用新型调整剂TP1、取消调整剂CMC、以新型捕收起泡剂A11代替2~#油等措施，有效改善了铅锌选别指标，确定了适宜现场生产的最佳工艺流程和药剂制度。研究结果表明：对含铅0.70%，含锌7.20%的原矿，采用铅优先浮选、一粗一扫粗精矿再磨三次精选铅流程、一粗一扫二精选锌流程，在入选细度-0.074mm占比80%，铅选别以硫化钠、亚硫酸钠、硫酸锌、TP1为调整剂，乙硫氮为捕收剂，A11为捕收起泡剂；锌选别以硫酸铜为活化剂、丁基黄药为捕收剂、2~#油为起泡剂；小型闭路试验获得了铅品位45.88%、含锌10.57%、铅回收率55.34%的铅精矿和锌品位56.01%、锌回收率75.02%的锌精矿，铅精矿铅品位和铅回收率均得以提升，铅精矿中含锌量有所降低，铅选别指标优化的同时也为锌浮选指标的提升创造了必要条件，铅、锌精矿指标良好。更多还原

【Abstract】 The lead recovery rate is low and the zinc content in the lead concentrate is high, which because of changes in ore properties of a complex lead-zinc mine in Sichuan province. The beneficiation technical indicators are not ideal, and the economic benefits of the enterprise are seriously affected. To solve the problems at the site, experimental research was focused on the optimizing the lead beneficiation technology, which based on the study of raw ore process mineralogy. With the measures such as using a new regulator TP1, canceling regulator CMC, replacing pine oil with a new collecting and foaming agent A11, and regrinding the lead concentrate, the beneficiation of lead-zinc indicators are effectively improved, so the optimal process flow and reagent system are determined suitable for on-site production. The research results show that for the raw ore containing lead is 0.70% and zinc is 7.20%, with the processes of lead zinc preferential flotation, through lead separating one roughing one scavenging-lead roughing concentrate regrinding-two cleaning, and zinc separating one roughing one scavenging two cleaning,one roughing, under the conditions which the fineness of-0.074 mm is 80%, sodium sulfide, sodium sulfide, zinc sulfate and TP1 are used as regulator for lead separation, ethyl sulfur nitrogen is used as the collector for lead separation and A11 is used as the collection foaming agent for lead separation, copper sulfate is used as activator for zinc separation, butyl xanthate as collector for zinc separation, and pine oil as foaming agent for zinc selection. The small-scale closed circuit test obtained lead concentrate with a lead grade of 45.88%, zinc content of 10.57%, and lead recovery rate of 55.34%, as well as zinc concentrate with a zinc grade of 56.01% and a zinc recovery rate of 75.02%. The lead grade and lead recovery rate of the lead concentrate were effectively improved, and the zinc content in the lead concentrate was reduced. The optimization of lead selection indicators also created necessary conditions for the improvement of zinc flotation indicators. According to the process flow and reagent system of small-scale experiments, process technology optimization and transformation were carried out on site, and industrial experiments results are well that basically consistent with small-scale experiments.更多还原