Collector for non iron metal sulphide preparation

Details Collector for non iron metal sulphide preparation Collector for non iron metal sulphide preparation

2006-05-30

2006-05-30

Lithgow, Thomas M. (Department: 1724)

Classifying, separating, and assorting solids

Fluid suspension

Liquid

C252S061000

Reexamination Certificate

active

07051881

ABSTRACT:
The present invention relates to a flotation reagent and a process for the flotation of sulfidic ores. The process comprises contacting the sulfidic ores with a combination of thionocarbamates and mercaptobenzothiazoles to improve the flotation of sulfidic ores, particularly the flotation of copper ore when the copper ore is associated with molybdenum and/or gold. The flotation reagent comprises a combination of compounds of formula (1)and formula (2)where R1and R2independently of one another are alkyl groups having 1 to 18 carbon atoms, and R3and R4independently of one another are hydrogen or C1–C6-alkyl, and M is hydrogen or an alkali metal, and (1) and (2) are in a weight ratio of (1):(2) of 95:5 to 75:25.

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Copy of the publication of the corresponding German Patent No. 1005526, granted May 23, 2002.
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Woods, R., et al., “Surface enhanced raman scattering spectroscopic studies of the adsorption of flotation collectors”, Minerals Engineering, vol. 13, No. 4, pp. 345-356.

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