Recovery of molybdenum and copper from porphyry ore via iso-flotability flotation  

斑岩型铜钼矿等可浮浮选回收钼和铜（英文）

作　　者：Qing-quan LIN Guo-hua GU Hui WANG You-cai LIU Chong-qing WANG Jian-gang FU Jun-yao ZHAO Luo-luo HUANG 林清泉;顾帼华;王晖;刘有才;王重庆;符剑刚;赵俊瑶;黄锣锣(中南大学资源加工与生物工程学院,长沙410083;中南大学化学化工学院,长沙410083)

机构地区：[1]School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China [2]School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

出　　处：《Transactions of Nonferrous Metals Society of China》2017年第10期2260-2271,共12页中国有色金属学报（英文版）

基　　金：Project(51374249)supported by the National Natural Science Foundation of China;Project(2016zzts103)supported by the Fundamental Research Funds for the Central Universities of China;Project(2015BAB12B02)supported by the National Science-Technology Support Plan,China;Project(2013B090800016)supported by Guangdong Provincial Science and Technology Plan,China

摘　　要：A copper-molybdenum iso-flotability flotation process has been developed to efficiently improve the recovery ofmolybdenite from Duobaoshan porphyry Cu-Mo ores.The effects of flotation approach,type of collector,feed particle sizedistribution,rougher pH value and reagent dosage on the recovery of molybdenite were evaluated systematically.The results suggestthat compared with kerosene and diesel oil,transformer oil has stronger dispersion capability in water media and better flotationselectivity for molybdenite,providing a higher molybdenum recovery under low reagent dosage.Moreover,compared with bulkflotation approach,the iso-flotability flotation approach using transformer oil as a collector can obtain superior Mo recovery(90.77%)and grade(0.80%)in the cleaner concentrate,and increase the Mo recovery and grade by over18%and5%in the final Moconcentrate,respectively.The results of commercial flotation further indicate that the iso-flotability flotation approach is a rationaland effective route to beneficiate the porphyry Cu-Mo ores.为了有效提高多宝山斑岩铜钼矿的辉钼矿回收率,开发了铜钼等可浮浮选的工艺流程。系统地考察了浮选方案、捕收剂种类、磨矿细度、粗选p H值及药剂用量对辉钼矿浮选回收的影响。结果表明,与煤油、柴油相比,变压器油在水中具有较强的分散能力,且对辉钼矿的浮选选择性较优,因而在低用量条件下便可获得较高的钼回收率。另外,与混合浮选方案相比,等可浮浮选方案利用变压器油作捕收剂不仅可获得较优的铜钼混合精矿(钼回收率和品位分别为90.77%和0.80%),而且能提高钼精矿的钼回收率在18%以上、钼品位在5%以上。工业浮选试验结果进一步表明,采用等可浮浮选方案选别该斑岩铜钼矿是行之有效的。

关 键 词：copper-molybdenum ore iso-flotability flotation oily collector interfacial interaction flotation separation 

分 类 号：TD923[矿业工程—选矿] TD95