Effect of cathodic polarization on the collectorless flotation of chalcopyrite

Li, X. ; Iwasaki, I.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 6
Publication Date: Jan 1, 1999
Rest potential and linear potential sweep techniques were used to study the cathodic-polarization processes on chalcopyrite, simulating chalcopyrite short-circuited with grinding media in a wet grinding mill. Microflotation tests were carried out to investigate the effect of cathodic polarization on the collectorless flotation of chalcopyrite. It was observed that collectorless flotation of a cathodically polarized chalcopyrite sample could he obtained when oxygen was used for aeration, but not if nitrogen was used. A mechanism for the role that oxygen plays in the collectorless flotation of cathodically polarized chalcopyrite is discussed.
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