某难分离铜钼混合精矿的分离研究  

Separation of a Refractory Copper-Molybdenum Bulk Concentrate

作　　者：俞娟[1] 杨洪英[2] 方钊[1] 李林波[1] 朱军[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055 [2]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《稀有金属》2014年第3期494-501,共8页Chinese Journal of Rare Metals

基　　金：国家自然科学基金项目(51304151;51374066;51304152);国家高技术研究发展计划项目(2012AA061501);陕西省自然科学基础研究基金项目(2013JQ7016);西安建筑科技大学学科建设人才项目(RC1227;RC1132)资助

摘　　要：对某难选铜钼矿进行了工艺矿物学研究，研究结果表明，该矿石中辉钼矿呈网丝状，黄铜矿充填于其中，矿石的这种结构造成浮选分离困难。通过实验确定了铜钼分离浮选生产中的最佳药剂制度：在粗选阶段，硫化钠40．00kg·t^-1，水玻璃1．00kg·t^-1，煤油0．50kg·t^-1；在一次扫选阶段，硫化钠20．00kg·t^-1，水玻璃0．50kg·t^-1，煤油0．25kg·t^-1；在二次扫选阶段，硫化钠10．00kg·t^-1，水玻璃0．25kg·t^-1，煤油0．13kg·t^-1；在精选阶段，水玻璃10．00kg·t^-1，煤油1．00kg·t^-1。在此基础上，通过现场考察和现场验证研究确定了生产调试方案，并进行了生产试运行，结果表明调试后铜钼分离效果良好，产品钼精矿中的铜含量由调试前的1．50％～1．80％降到0．10％～0．20％；铜精矿中的钼含量由调试前的1．10％～1．40％降到0．50％～0．80％，产品钼精矿的品位由调试前的20％提高到33％。The paper gave an investigation on the technological mineralogy of a refractory copper-molybdenum ore. The analysis result suggested that molybdenum presented filamentous feature and it was filled with chalcopyrite. This kind of ore structure made the separation of chalcopyrite from molybdenum difficuh. Reagent system for the separation of chalcopyrite and molybdenite were determined in this study. During the roughing separation stage, the dosages of sodium sulphide, sodium silicate and kerosene were 40.00, 1.00 and 0.50 kg·t^-1, respectively. During the first scavenging stage, the dosages of sodium sulphide, sodium silicate and kerosene were 20. 00, 0.50 and 0.13 kg·t^-1, respectively. During the second scavenging stage, the dosages of sodium sulphide, sodium silicate and kerosene were 10.00, 0.25 and 0. 13 kg·t^-1, respectively. During the cleaning stage, the dosages of sodium silicate and kerosene were 10.00 and 1.00 kg·t^-1, respectively. The field adjustment scheme was fixed according to the field inspection and the verification test. The filed production practice suggested that the separation of chalcopyrite and molyhdenite achieved satisfied results. The content of copper in the molybdenum concentrate decreased from 1.50% - 1.80% to 0.10% - 0.20% ; the content of molybdenum in copper concentrate decreased from 1.10% - 1.40% to 0.50% - 0.80% ; the grade of molybdenum concentrate increased from 20% to 33%.

关 键 词：铜钼矿 浮选 铜钼分离 矽卡岩铜矿 

分 类 号：TD952[矿业工程—选矿] TD954