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Leaching of a zinc ore and concentrate using the Geocoat™ technology

Soleimani, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.mineng.2010.10.003
  3. Abstract:
  4. In this study, the Geocoat™ technology was used for the extraction of zinc from a mineral concentrate obtained from the Kooshk mine (Yazd, Iran) by a culture dominated by the mesophilic bacterium Acidithiobacillus ferrooxidans in a packed column bioreactor. A low grade sphalerite ore was used as support for the concentrate coating. During the 100 days of leaching pH, Fe3+, Fetotal, microbial population density and zinc extraction were measured. The final zinc extraction from concentrate and low grade support was 97% and 78%, respectively, and it was found that leaching from the support does not proceed significantly before leaching from the coating is completed
  5. Keywords:
  6. Geocoat ; Heap leaching ; Acidithiobacillus ferrooxidans ; Low grade ; Low grade sphalerite ; Mesophilic bacteria ; Microbial population densities ; Mineral concentrates ; Packed column bioreactors ; Sphalerite ; Zinc extraction ; Bacteria ; Bacteriology ; Coatings ; Ores ; Zinc ; Zinc coatings ; Zinc ore treatment ; Zinc sulfide ; Leaching
  7. Source: Minerals Engineering ; Volume 24, Issue 1 , 2011 , Pages 64-69 ; 08926875 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0892687510002815