Copper extraction from gold bearing copper(II) sulphide without thermal process to obtain gold concentrate

Ayata, Sevda; Yildiran, Hüseyin

doi:10.1016/j.mineng.2005.01.019

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…The conventional processing that is presently used to extract metal ion from ore involves toxic and aggressive chemical reagents in water, followed by application of electrical energy to electrodes in aqueous solution of complex copper silver or gold ions, which decomposes the metal ion complexes leading to the deposition of the desired metal [1]. The conventional processing is expensive and environmentally invasive, but is tolerated because of the value of these metals [2][3][4]. These metals are often found in the same ore.…”

Section: Introductionmentioning

confidence: 99%

Clean and efficient extraction of copper ions and deposition as metal

Gervasio¹,

Elsentriecy²,

Jalbout³

2018

REFFIT

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A simple, clean and efficient one-pot process is offered as an alternative to the conventional complex processing presently used to extract copper ions from copper containing materials, like copper concentrate or slag, and to form copper metal. The alternative process uses a eutectic molten salt of potassium chloride, sodium chloride and zinc chloride as the reaction fluid which is recyclable, low in cost, environmentally benign, low melting (melting point 204°), high boiling (vapor pressure is only a few psi at 800°) and chemically, thermally and physically stable. The metal completely dissolves out of copper concentrate or slag in the aerobic eutectic molten chloride salt in a graphite or glassy carbon pot, which serves as a cathode, with a graphite anode, to reduce the metal ions to metal which sinks to the bottom of the graphite pot. The total efficiency forextraction and deposition is virtually 100% as determined by elemental and gravimetric analyses.

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