The Leaching Behaviours of Chalcopyrite with Distinct Genetic Types

Abstract:

The copper extraction yield from chemical leaching of chalcopyrite depends on temperature, pH, and the oxidation-reduction potential (ORP), as well as on the different genetic type of the chalcopyrite used. The chemical leaching characteristics of chalcopyrite from marine volcanic type and porphyry type were studied. It was found that the intermediates of marine volcanic chalcopyrite and porphyry chalcopyrite elucidated from the MLA were elemental sulphur and non-stoichiometric minerals, such as Cu_3.5Fe₄S_2.5, Cu₅Fe₄S and Cu_3.5Fe_1.5S₅. The results suggested that the main difference between marine volcanic chalcopyrite and porphyry chalcopyrite is the rates of copper and iron ions dissolution from chalcopyrite crystal lattice.

• Periodical: Advanced Materials Research (Volumes 1033-1034)
• Pages: 1288-1291
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1033-1034.1288
• Online since: October 2014
• Authors: Jing Bai*, Jiang Kang Wen, Song Tao Huang, Biao Wu, Shuang Liu
• Keywords: Chemical Leaching, Intermediate, Marine Volcanic Chalcopyrite, Porphyry Chalcopyrite

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