Reagent consumption in mineral separation circuits

Details Reagent consumption in mineral separation circuits Reagent consumption in mineral separation circuits

1998-06-24

2000-03-28

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209 1, 209166, 209167, 241 2413, 241 2425, B03D 102, B03D 104, B03D 100

Patent

active

060419415

ABSTRACT:
A method for reducing both reagent consumption and scale formation in a mineral separation circuit employing sulfoxy compounds as reagents. The method involves introducing into the mineral separation circuit a non-oxidizing gas in a quantity sufficient to reduce the degree of oxidation of the sulfoxy radical. Preferably the gas is introduced during the reagent conditioning and flotation stages, the stages where the presence of dissolved oxygen in a slurry is most likely to create the conditions conducive to oxidation of the sulfoxy radicals which result in reagent consumption and scale formation problems. The process is suitable for a wide range of mineral separation circuits which use sulfoxy reagents for the separation of sulfidic minerals including chalcopyrite, pentlandite, pyrite, sphalerite, pyrrhotite or galena.

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Kongolo et al., "Improving the efficiency of sulphidization of oxidized copper ores by column and inert gas flotation," Proceedings of COPPER 95-COBRE 95 International Conference, vol. II, The Metallurgical Society of CIM, pp. 183-196, 1995.

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