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Reaction and Separation

Recovery of Valuable Elements in Jaroaite Residue by Hot Acid Leaching

  • LIU Peng-fei ZHANG Yi-fei YOU Shao-wei BO Jing JIANG Xiao-duo
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  • 1. Key Lab. Green Process and Eng., National Eng. Lab. Hydrometall. Cleaner Production Technol., Institute of Process Engineering, Chinese Academy of Sciences
    2. Institute of Process Engineering,Chinese Academy of Sciences

Received date: 2016-01-27

  Revised date: 2016-03-04

  Online published: 2016-10-10

Abstract

Sulfuric acid and hydrochloric acid were used to research leaching process of Fe, Si, Zn, Pb in jarosite residue. The results showed that sulfuric acid leaching, leaching rate of Fe, Zn reached 80% under the optimum conditions of leaching temperature of 95℃, reaction time of 2 h, stirring speed of 300 r/min, concentration of sulfuric acid of 1.2 mol/L and mass ratio of liquid to solid of 100:5. Hydrochloric acid leaching, leaching rate of Fe, Zn, Pb reached to 83%, 89%, 99% under the optimum conditions of leaching temperature of 95℃, reaction time of 1.5 h, stirring speed 400 r/min, concentration of hydrochloric acid 2.8 mol/L and mass ratio of liquid to solid 100:5. Jarosite was used to get rid of Fe in leaching solution. Jarosite residue can be fixed treatment to finally obtain zn-rich Solution.

Cite this article

LIU Peng-fei ZHANG Yi-fei YOU Shao-wei BO Jing JIANG Xiao-duo . Recovery of Valuable Elements in Jaroaite Residue by Hot Acid Leaching[J]. The Chinese Journal of Process Engineering, 2016 , 16(4) : 584 -589 . DOI: 10.12034/j.issn.1009-606X.216125

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