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Digitale Medien

Electrochemistry of the chalcocite-xanthate system (1986)

O'Dell, C. S. ; Walker, G. W. ; Richardson, P. E.

Springer

Journal of applied electrochemistry 16 (1986), S. 544-554

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Details

ISSN: 1572-8838

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik

Notizen: Abstract The interactions between chalcocite and ethylxanthate have been examined in an electrochemical-microflotation cell containing a particle-bed working electrode. Cyclic voltammetry has shown the formation of a chemisorbed product commencing at −0.5 V versus SCE with a bulk oxidation product, possibly cuprous xanthate, forming above −0.23 V. Relating the charge passed on a potentiostated mineral bed after addition of xanthate to spectrophotometric changes in xanthate concentration suggested the presence of a fast chemical reaction and a charge transfer reaction. The strong correlation between flotation response and potential indicates that chemisorption of ethylxanthate produces a layer sufficiently hydrophobic for chalcocite flotation.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01006849

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