| Citation: | Zhang Xingwang, Sun Zhiyong. Study on Process Mineralogy and Mineral Processing Technology of A Low Grade Copper-Molybdenum Ore[J]. Multipurpose Utilization of Mineral Resources, 2023, 44(1): 191-196. doi: 10.3969/j.issn.1000-6532.2023.01.028 |
A copper-molybdenum ore in Qinghai contains 0.084% Mo and 0.067% Cu. Process mineralogical study shows that molybdenum in the ore mainly exists in the form of molybdenite, while copper in the form of chalcopyrite, chalcocite and bornite. Based on the molybdenum ore property, the flowsheet of selective flotation was adopted.Copper and molybdenum were comprehensively recovered by flotation process. Under the condition of grinding fineness of 74 μm 70%, molybdenum concentrate was obtained by one roughing, one scavenging and two blank cleaning. After regrinding, molybdenum concentrate with molybdenum grade of 50.21% and recovery of 85.21% was obtained by three cleaning. After molybdenum flotation tailings were activated with copper sulfate, copper concentrate with grade of 15.32% and recovery of 54.92% was obtained by one roughing, one scavenging and four cleaning. The comprehensive recovery of valuable elements was realized.
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Main morphology of molybdenite
Main forms of chalcopyrite, pyrite and chalcopyrite
Principle process flow
Test results of sodium silicate dosage
Test results of Knox dosage
Test results of sodium mercaptoacetate dosage
Test results of diesel oil dosage
Test results of grinding fineness
Test results of regrinding fineness
Flowsheet of comprehensive recovery of copper from molybdenum flotation tailings
Flowsheet of closed-circuit flotaion