矿浆电位对铜钼浮选分离的影响及机理分析  

Study on Flotation of Copper Molybdenumt and Mechanism Under the Low Basicity Condition

作　　者：曾海鹏 黄红军[1] ZENG Haipeng;HUANG Hongjun(School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China)

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《矿产保护与利用》2020年第5期103-108,共6页Conservation and Utilization of Mineral Resources

摘　　要：为探究矿浆电位对铜钼矿浮选的影响,采用黄铜矿、辉钼矿纯矿物作为样品,进行了矿浆pH、浮选药剂种类及用量对矿浆电位影响的研究。结果表明,黄铜矿上浮最佳矿浆电位为360 mV,pH为8。硫化钠、硫酸铵、碳酸钠三种调整剂按质量比1:1:1混合使用时,黄铜矿更易达到上浮电位区间。同时,当矿浆pH为9左右时,巯基乙酸能很好地抑制黄铜矿的上浮,并且对辉钼矿具有很好的选择性作用效果,有利于二者的分离。机理分析结果表明,在矿浆pH为8时,矿浆中生成大量的CuS是促进黄铜矿上浮的主要原因。In order to explore the influence of pulp potential on flotation of copper molybdenum ore, chalcopyrite and molybdenite were used as samples to study the effects of pulp pH, flotation reagent type and consumption on pulp potential. The results show that the optimum slurry potential is 360 mV and pH is 8. When sodium sulfide, ammonium sulfate and sodium carbonate are mixed in 1:1:1, chalcopyrite is easier to reach the floating potential range. At the same time, when the pulp pH is about 9, mercaptoacetic acid can well inhibit the flotation of chalcopyrite, and has a good selective effect on molybdenite, which is conducive to the separation of the two. In the mechanism analysis, it is pointed out that the main reason for the flotation of chalcopyrite is the formation of a large amount of CuS in the pulp at pH 8.

关 键 词：铜钼分离 煤油 电位调控 

分 类 号：TD952.1[矿业工程—选矿]