Estimation of individual thio-salts and sulphate in flotation mill solutions.
This paper presents methods found to be suitable for the determination of thio-salts and sulphate in flotation mill solutions. Thiosulphate, tetrathionate and trithionate are estimated spectrophotometrically after cyanolysis. A modified iodimetric procedure is used for sulphite and a titrimetric method for direct determination of sulphate. The observation that dithionate is not oxidized by hydrogen peroxide but is oxidized to sulphate by potassium chlorate-nitric acid mixture is the basis for estimation of dithionate.
Rolia
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Metallurgical Chemistry Section, Mineral Sciences Laboratories, CANMET, Department of Energy, Mines and Resources, Ottawa, Canada.
Barbeau
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