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Modern Mining ›› 2020, Vol. 36 ›› Issue (4): 118-120.

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Experiment of Iron Increase and Sulfur Reduce from a High Sulfur Magnetite Concentrate

Hu Bingsheng,Wang Xiaoyu,Ding Kaizhen   

  1. Anhui Masteel Luohe Mining Co.,Ltd.
  • Online:2020-04-25 Published:2020-05-20

Abstract: The iron grade of a magnetite concentrate is 56.14%,the content of S is 9.18%,and 95.75% sulfur is in form of pyrrhotite.In order to reach the target of sulfur content <1% in iron concentrate,the experiment of iron increase and sulfur reduction in magnetite concentrate was carried out according to the principle of grinding - low intensity magnetic separation-flotation.The results show that the iron concentrate with Fe grade 67.39% and S content 0.80%,can be obtained by grinding (-0.043 mm 85%)-one roughing one cleaning low intensity magnetic separation for desilicication-one roughing two cleaning reverse flotation desulfurization,also high-iron sulfur concentrate with iron grade of 62.54% and 17.50% can be obtained.Which provides a technical reference for iron increase and sulfur reduction of this kind of high sulfur magnetite concentrate.

Key words: Pyrrhotite, Low intensity magnetic separation, Desulfuration by flotation