西藏巨龙含钼铜精矿综合回收钼研究  

Study on Comprehensive Recovery of Molybdenum from a Molybdenum bearing Copper Concentrate in Tibet Jvlong

作　　者：周利华 ZHOU Lihua(Zijin Mining Group Co.,Ltd.,Longyan 364000,Fujian,China;Xiamen Zijin Mining&Metallurgy Technology Co.,Ltd.,Xiamen 361000,Fujian,China)

机构地区：[1]紫金矿业集团股份有限公司,福建龙岩364000 [2]厦门紫金矿冶技术有限公司,福建厦门361000

出　　处：《有色金属（选矿部分）》2024年第11期123-130,共8页Nonferrous Metals（Mineral Processing Section）

基　　金：国家自然科学基金资助项目(52004020);福建省科学技术厅对外合作项目(202111012)。

摘　　要：铜钼混合精矿通常采用全浮选的工艺分离铜、钼矿物,存在分离难度大、硫化钠消耗大的特点,为优化铜钼分离选矿工艺流程,利用铜、钼矿物比磁化系数的差异,系统地进行“磁—浮”联合工艺与全浮选的试验对比研究,提高铜钼分选指标。西藏巨龙含钼铜精矿含铜20.49%、含钼0.68%,主要铜矿物为黄铜矿,其次为斑铜矿、辉铜矿,主要钼矿物为辉钼矿。经“磁—浮”联合工艺试验研究,含钼铜精矿磨细至-0.038 mm含量占60%,强磁选获得产率35.48%,含铜26.48%、含钼0.08%的磁选精矿,磁选尾矿采用“硫氢化钠+BK510”为铜矿物抑制剂、“煤油+BK345”为捕收剂,浮选可获得含钼52.37%、含铜1.58%,钼回收率87.63%、铜回收率0.09%的钼精矿,综合铜精矿含铜20.71%、含钼0.09%,铜回收率99.91%、钼回收率12.37%。相比传统全浮选工艺,可提高钼精矿品位2.31个百分点,钼回收率0.43个百分点。通过磁选可预选产率35.48%的磁选铜精矿,可大幅减少硫化钠用量;同时优化浮选药剂,采用铜抑制剂BK510协同硫氢化钠的使用,BK345+煤油的组合使用,可提高铜钼矿物分选效率,进一步降低硫化钠的用量。含铜铜精矿“磁—浮”新工艺、新药剂的研究可为铜钼矿的开发提供技术支持。Copper molybdenum mixed concentrate usually uses the process of full flotation to separate copper and molybdenum minerals,which has the characteristics of high separation difficulty and high consumption of sodium sulfide.In order to optimize the copper molybdenum separation and beneficiation process,the difference in the specific magnetization coefficient of copper and molybdenum minerals is utilized to systematically conduct experimental comparative study between the“magnetic separationflotation”combined process and full flotation,in order to improve the copper molybdenum separation indicators.Julong molybdenum bearing copper concentrate in Tibet contains 20.49%copper and 0.68%molybdenum.The main copper mineral is chalcopyrite,followed by bornite and chalcocite,and the main molybdenum mineral is molybdenite.Through the experimental study of the“magnetic separation-flotation”combined process,the molybdenum containing copper concentrate was ground to a content of-0.038mm accounting for 60%,and the high magnetic separation concentrate with a of 35.48%,copper content of 26.48%and a molybdenum content of 0.08%was obtained.The magnetic separation tailings used“sodium hydrosulfide+BK510”as a copper mineral inhibitor and“kerosene+BK345”as a collector.Flotation can obtain molybdenum concentrate with a molybdenum content of 52.37%,copper content of 1.58%,molybdenum recovery rate of 87.63%and copper recovery rate of 0.09%.The comprehensive copper concentrate contains copper of 20.71%and molybdenum of 0.09%.The copper recovery rate is 99.91%and the molybdenum recovery rate is 12.37%.Compared with traditional full flotation process,it can increase the grade of molybdenum concentrate by 2.31percentage points and the molybdenum recovery rate by 0.43percentage points.Magnetic separation can pre-select copper concentrate with a yield of 35.48%,which can significantly reduce the amount of sodium sulfide;Simultaneously optimizing flotation reagents,using copper inhibitor BK510in conjunction with the use of sodium h

关 键 词：含钼铜精矿 “磁—浮”流程 硫氢化钠 煤油 

分 类 号：TD952[矿业工程—选矿]