某铜钼混合精矿分离铜抑制剂筛选  

Selection of a Copper Inhibitor for Separation of Copper-Molybdenum Mixed Concentrate

作　　者：吴桂叶[1,2] 徐连华 王金玲[1,2] 张杰[1,2] 胡志强[1,2] 刘龙利[1,2] 

机构地区：[1]北京矿冶研究总院,北京100044 [2]矿物加工科学与技术国家重点实验室,北京100044 [3]铁岭选矿药剂有限公司,辽宁铁岭112002

出　　处：《金属矿山》2015年第1期50-53,共4页Metal Mine

基　　金：国家高技术研究发展计划(863计划)项目(编号:2013AA064101);院所专项(编号:2012 YS 04)

摘　　要：黄铜矿能否被有效抑制是铜钼分离的关键,而Na2S等传统抑制剂大都存在用量大、环境污染严重、损害职工健康等问题。为了获取低毒、低用量的高效抑制剂,对借助CAMD技术设计合成的3种新型有机抑制剂和3种常规抑制剂分别与黄铜矿的相互作用能进行了比较,并通过试验比较了实际的抑制效果,对最优抑制剂适宜的p H条件进行了确定。MS软件计算的与黄铜矿的相互作用能的强弱顺序为BK511>BK509>BK516>巯基乙酸钠>Na2S>Na HS,即BK511在铜钼分离时的抑铜效果最好;BK511在弱碱性环境下的抑铜浮钼效果理想;BK511总用量为7.4kg/t情况下,采用2粗1精、钼精矿1再磨(-0.038 mm占78%)后5次精选、中矿顺序返回闭路流程处理某铜钼混合精矿,最终获得了钼品位为46.31%、回收率为89.94%、含铜1.04%的钼精矿和铜品位为22.69%、回收率为99.97%、含钼0.033%的铜精矿,BK511用量明显低于现场Na2S的用量,且环境污染程度大大减轻。Whether Chalcopyrite can be effectively depressed or not is the key to realize the separation of copper-molyb-denum,while Na2 S and other traditional inhibitors mostly have problems of the large dosages,serious environmental pollution, damage to the health etc. In order to obtain high efficient inhibitors of less toxic and dosage,three kinds of new organic inhibi-tors are designed and synthesized with CAMD technology and compared with three conventional inhibitors in interaction with chalcopyrite for calculation of energy change respectively. Comparison tests for actual inhibitory effect are conducted,and the optimum pH value is determined when the inhibitor has best performance. The strength order of the interaction energy with chalcopyrite by MS software is BK511〉BK509〉BK516〉 sodium thioglycolate〉Na2 S〉NaHS,which shows that BK511 has the best copper depression performance in copper-molybdenum separation. BK511 has better performance in alkaline environment for copper depression and molybdenum flotation. With BK511 total dosage of 7. 4 kg/t,through the process of two roughing-one cleaning,regrinding（78% -0. 038 mm） and five cleanings,middllings back to the flowsheet in turn,molybdenum concentrate with molybdenum grade and recovery of 46. 31%,89. 94%,and copper content of 1. 04%,copper concentrate with copper grade of 22. 69% and recovery of 99. 97%,molybdenum content of 0. 033% are obtained. Dosage of BK511 is obviously lower than that of Na2 S,which greatly reduces the environmental pollution.

关 键 词：黄铜矿 辉钼矿 铜钼分离 抑制剂 CAMD技术 

分 类 号：TD923.14[矿业工程—选矿]