Mathematical model of the chemistry of the dump leaching of chalcopyrite | Zendy

K.C. Liddell | Zendy

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Mathematical model of the chemistry of the dump leaching of chalcopyrite

Author(s) -

K.C. Liddell

Publication year - 1980

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/5508165

Subject(s) - chemistry , inorganic chemistry , jarosite , aqueous solution , hydroxide , nuclear chemistry , dissociation (chemistry) , dissolution , analytical chemistry (journal) , crystallography , chromatography

A model of the reaction of chalcopyrite, CuFeS/sub 2/ with Fe/sup 3 +/ and with O/sub 2/ is considered. Homogeneous solution phase reactions are assumed to be always at equilibrium throughout the dissolution of the mineral. The dissociation of HSO/sup -//sub 4/ and several complexation reactions involving Cu/sup 2 +/, Fe/sup 2 +/ and Fe/sup 3 +/ are incorporated in the model equations. The relative importance of Fe/sup 3 +/, O/sub 2/, and H/sup +/ as oxidants and the role of solution equilibria are assessed and the implications for leaching practice discussed.

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