Browsing by Author "Vasiri, Akhtarolmolouk Kazemi"

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    Leaching of a zinc ore and concentrate  using the Geocoat™ technology
    (Elsevier, 2011) Soleimani, Mohammad; Petersen, Jochen; Roostaazad, Reza; Hosseini, Soheil; Mohammad, Mousavi; Najafi, Alireza; Vasiri, Akhtarolmolouk Kazemi
    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 Acidithiobacillusferrooxidans 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.