Pb-BHA配位捕收剂的黑白钨混合常温浮选研究

发布时间：2018-12-13 14:14

【摘要】：铅离子为活化剂、苯甲羟肟酸(BHA)为捕收剂的药剂体系被广泛应用于钨矿浮选中,但铅离子不可避免会与苯甲羟肟酸形成配合物,研究Pb-BHA(苯甲羟肟酸铅)配合物对白钨矿、黑钨矿、方解石和萤石单矿物的捕收性能和浮选行为,以及Pb-BHA配位捕收剂在黑白钨常温混合浮选中的应用。结果表明,Pb-BHA配位捕收剂在一定的Pb/BHA配比下对钨矿物的捕收能力优于Pb~(2+)和BHA分开加入,不同Pb/BHA配比的Pb-BHA配位捕收剂对四种矿物在不同的浮选pH值区间的捕收能力差异较大,通过调整Pb/BHA配比和pH值控制Pb-BHA配合物的结构及捕收性能,可以实现钨矿物与含钙脉石矿物的高效浮选分离。基于PbBHA配位捕收剂的黑白钨混合常温浮选新工艺在柿竹园选厂得到成功应用,对钨资源的高效综合利用及清洁生产具有重要指导意义。
[Abstract]:Lead ion as activator and benzohydroxamic acid (BHA) as collector are widely used in tungsten flotation, but lead ion will inevitably form complex with benzohydroxamic acid. The collector and flotation behavior of Pb-BHA (lead benzohydroxamic acid) complexes for scheelite wolframite calcite and fluorite were studied and the application of Pb-BHA coordination collector in mixed flotation of black-and-white tungsten at room temperature was studied. The results show that the collecting ability of Pb-BHA coordination collector is better than that of Pb~ (2) and BHA under certain Pb/BHA ratio. The collecting ability of four kinds of minerals in different pH value range of flotation is different from that of Pb-BHA coordination collector with different Pb/BHA ratio. The structure and collecting performance of Pb-BHA complex are controlled by adjusting the ratio of Pb/BHA and pH value. The high-efficiency flotation separation of tungsten ore and calcium-bearing gangue mineral can be realized. The new flotation process of black-and-white tungsten mixed at room temperature based on PbBHA coordination collector has been successfully applied in Shizhuyuan separation plant, which is of great significance for the efficient comprehensive utilization of tungsten resources and clean production.
【作者单位】：中南大学资源加工与生物工程学院;北京矿冶研究总院;
【基金】：国家十二五科技支撑计划(2015BAB14B02) 湖南省高等学校2011协同创新中心项目 “战略金属矿产资源清洁高效利用”协同创新中心项目资助中南大学“创新驱动计划”项目(2015CX005) 高等学校学科创新引智计划资助(B14034) 国家自然科学基金青年基金资助项目(51404187)
【分类号】：TD923.13;TD954

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