| Abstract: | It is shown that modifiers decrease oxidation of pyrite following the line: cyanide > thiosulphate > sulfite > sulfide > dioxide.
Action of the modifiers shows itself weaker for other sulfide minerals. The mode of selective flotation of cooper-zinc, copper-pyritic
and other products has been developed with allowance for this fact. Iron powder and ferrous iron, as fine reducing agents,
advantage to saving the natural surface of a sulfide mineral and improving the flotation selectivity. Decrease in the concentration
of copper in liquid phase, that activates sphalerite, and stabilization of anionic composition depend on the mode of pulp
conditioning by grinding and flotation, based on the use of various modifiers, their feeding points and pH of the medium.
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 108–119, January–February, 2007. |
