Cuprous hydrometallurgy: Part VIII. Solvent extraction and recovery of copper(I) chloride with organic nitriles from an iron(III), copper(II) chloride, two-step oxidative leach of chalcopyrite concentrate

J.S. Preston; D.M. Muir; A.J. Parker

doi:10.1016/0304-386X(80)90041-9

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Cuprous hydrometallurgy: Part VIII. Solvent extraction and recovery of copper(I) chloride with organic nitriles from an iron(III), copper(II) chloride, two-step oxidative leach of chalcopyrite concentrate

Journal article

Peer reviewed

Cuprous hydrometallurgy: Part VIII. Solvent extraction and recovery of copper(I) chloride with organic nitriles from an iron(III), copper(II) chloride, two-step oxidative leach of chalcopyrite concentrate

J.S. Preston, D.M. Muir and A.J. Parker

Hydrometallurgy, Vol.5(2-3), pp.227-241

1980

DOI: https://doi.org/10.1016/0304-386X(80)90041-9

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Abstract

Water-immiscible organic nitriles selectively extract copper(I) chloride as CuCl from aqueous chloride solutions. The distribution coefficients for the extraction of metal chlorides are in the order Ni2+ ⪡ Fe2+ < Na+ < Cu2+ ≈ Co2+ < Cu+ ⩽ Fe3+. The equilibrium Cu2+ + Fe2+ ⇌ Cu+ + Fe3+ lies strongly to the right in nitrile solutions containing a small amount of water. When volatile nitriles containing some water are used as extractants, CuCl may be recovered from the organic phase by stripping the solvent with steam. Pure CuCl, suitable for reduction to electrolytic-grade copper, is precipitated from the residual aqueous phase. A process is demonstrated for the recovery of pure CuCl from chalcopyrite concentrate, in which a two-stage, iron(III), copper(II) chloride leach is used to maximize the amount of CuCl relative to CuCl2 formed in solution.

Details

Title: Cuprous hydrometallurgy: Part VIII. Solvent extraction and recovery of copper(I) chloride with organic nitriles from an iron(III), copper(II) chloride, two-step oxidative leach of chalcopyrite concentrate
Authors/Creators: J.S. Preston (Author/Creator)
D.M. Muir (Author/Creator)
A.J. Parker (Author/Creator)
Publication Details: Hydrometallurgy, Vol.5(2-3), pp.227-241
Publisher: Elsevier BV
Identifiers: 991005541879307891
Copyright: © 1980 Elsevier B.V.
Murdoch Affiliation: School of Mathematical and Physical Sciences
Language: English
Resource Type: Journal article

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Citation topics: 2 Chemistry; 2.209 Spectrometry & Separation; 2.209.822 Solvent Extraction
Web Of Science research areas: Metallurgy & Metallurgical Engineering
ESI research areas: Materials Science