Abstract
The studies of sulphur distribution in oxidation products of pyrrhotite and chalcopyrite being components of Cu-Ni ores showed that the elementary sulphur — sulphoxide ion ratio on the mineral surface and in the liquid phase of mineral suspensions changes in the presence of sodium thiosulphate. Sodium thiosulphate exhibits properties of a reducing agent and prevents formation of hydrophobic elementary sulphur on pyrrhotite surface due to oxygen absorption and oxidation of thiosulphate-ions to sulphates. The decrease in pyrrhotite floatability is observed, and more favorable conditions are provided for selective flotation of chalcopyrite on copper-nickel ore processing.
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 89–94, July–August, 2006.
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Matveeva, T.N., Gromova, N.K. Influence of sodium thiosulphate on oxidation of sulphide minerals during selective flotation of copper-nickel ores. J Min Sci 42, 387–392 (2006). https://doi.org/10.1007/s10913-006-0067-y
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DOI: https://doi.org/10.1007/s10913-006-0067-y