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Metal Mine ›› 2013, Vol. 42 ›› Issue (11): 164-166.

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Experiments on Concentration of Zn from a Pb-Zn Tailing in Fujian

Xu Fei,Lu Huifeng,Guo Wei   

  1. East China Mineral Exploration and Development Bureau
  • Online:2013-11-15 Published:2014-01-26

Abstract: There are plenty of sphalerite,pyrite and pyrrhotite in early stage of a Pb-Zn tailing in Fujian. These minerals belong to high-quality secondary resources,and has recovery value.Study on the Zn concentration from representative samples of early tailings were carried out. The results showed that under regrinding fineness of -200 mesh 90% for the sample,Zn concentrate with Zn grade of 45.50% and zinc recovery of 67.05% was obtained by adopting the process of one roughing,three-cleaning,two-scavenging and middles back to the flow-sheet in turn. The reason for difficulty in improving Zn recovery is that there are only 55.92% of Zn existing in floatable Zinc Sulfide,and the remains are in difficult-to-float Zinc salt.

Key words: Pb-Zn tailings, Marmatite, Activator