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Metal Mine ›› 2014, Vol. 43 ›› Issue (05): 91-94.

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Beneficiation Tests on a Low Grade Copper-molybdenum Ore from North China

Li Caiqin,Sun Chunbao,Li Shaoying,Liu Xinggang,Zhen Chunhong,Kang Jinxing   

  1. Civil and Environmental Engineering Institute,University of Science and Technology Beijing,Beijing 100083,China
  • Online:2014-05-15 Published:2014-09-11

Abstract: With the purpose of high efficiently developing and utilizing a low grade porphyry copper-molybdenum ore from North China at a low cost,copper and molybdenum bulk flotation tests were carried out with the new molybdenum minerals flotation collector as the subject,after finding that the main valuable minerals are chalcopyrite,bornite and molybdenite,native copper sulfide and secondary copper sulfide accounted for 97.10% of the total copper,molybdenum sulfide accounted for 96.02% of the total molybdenum.The results showed that copper-molybdenum mixed concentrate with copper and molybdenum grade of 23.72% and 1.044%,and copper and molybdenum recovery of 87.22% and 74.39% respectively can achieved at the reasonable grinding fineness of 65% -0.074 mm,Mo+MC dosage of 12+3 g/t,lime dosage of 1 500 g/t,2# oil dosage of 25 g/t through closed-circuit process of one roughing,three cleaning,three scavenging and middles back to the flow-sheet in turn.

Key words: Low-grade porphyry copper-molybdenum ore, Bulk flotation, Collector Mo+MC