Welcome to Metal Mine! Today is Share:
×

扫码分享

Metal Mine ›› 2019, Vol. 48 ›› Issue (04): 64-70.

Previous Articles     Next Articles

Study on Beneficiation Process of a Copper-Nickel Sulfide Ore in Xinjiang

Wang Zhao1,2,3,Bu Xianzhong1,Weng Cunjian1,2,3,Wang Pengcheng 2,3,Liu Bo 4,Luo Xianping1,2,3,5   

  1. 1. School of Resources Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;2. Key Laboratory of Plateau Mineral Processing Engineering and Comprehensive Utilization in Qinghai Province, Xining 810006,China;3. Qinghai Province Nonferrous Mineral Resources Engineering Technology Research Center, Xining 810006,China;4. Xinjiang Ruilun Mining Co., Ltd., Hami 839000,China;5. School of Resources and Environmental Engineering,Jiangxi University of Science and Technology, Ganzhou 341000,China
  • Online:2019-04-15 Published:2019-05-13

Abstract: The raw ore of Xinjiang Ruilun copper-nickel ore contains 0.14% copper and 0.51% nickel, belonging to the high nickel and low copper sulfide copper-nickel ore. The copper grade in the ore is relatively low, and contains a large number of gangue minerals such as talc and serpentine which are easily muddy, which adversely affects the efficient recovery of the copper-nickel sulfide ore. In order to efficiently develop and utilize the copper-nickel sulfide ore, a systematic beneficiation process was carried out. The laboratory closed-circuit test results show that: the fineness of grinding is -74 μm, accounting for 75%, sodium carbonate is used as pH regulator, copper sulfate is used as activator, and sodium silicate and CMC are depressant. Z-200, ammonium butyl aerofloat, butyl xanthate and amyl xanthate are the collectors, after two roughing, four cleaning, three scavenging copper-nickel mixed flotation, copper-nickel mixed concentrate with lime as pH regulator, Z-200 as collector, BK-204 as foaming agent. Copper concentrate containing 26.12% copper, 0.55% nickel, 76.49% copper recovery and 0.44% nickel recovery, nickel concentrate containing 10.42% nickel, 0.39% copper, 73.14% nickel recovery, and 9.97% copper recovery was obtained. The MgO is reduced to 5.88% in nickel concentrate. It solves the problem of high content of magnesium oxide impurities in nickel concentrate, improves the quality of concentrate and provides theoretical basis for on-site production.

Key words: Mixed flotation, Nickel pyrite, Chalcopyrite, Serpentine, Talc