Neutral hydrocarboxycarbonyl thionocarbamate sulfide collectors

Details Neutral hydrocarboxycarbonyl thionocarbamate sulfide collectors Neutral hydrocarboxycarbonyl thionocarbamate sulfide collectors

1987-07-30

1989-01-10

Wax, Robert A.

Compositions

Physical separation agents

Froth-flotation or differential adherence

558234, C09K 300

Patent

active

RE0328278

ABSTRACT:
New and improved collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores are disclosed. The collector compositions comprise at least one hydrocarboxycarbonyl thionocarbamate compound selected from compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each, independently, selected from saturated and unsaturated hydrocarbyl radicals, alkyl polyether radicals and aromatic radicals, or such radicals optionally substituted by polar groups selected from halogen, nitrile and nitro groups. The use of the hydrocarboxycarbonyl thionocarbamate collectors provides excellent metallurgical recoveries of sulfide mineral values in froth flotation processes conducted over a broad range of pH conditions including acid, neutral and mildly alkaline pH.

REFERENCES:
patent: 2691635 (1954-10-01), Harris et al.
patent: 3590998 (1971-07-01), Collins et al.
patent: 3907854 (1975-09-01), Bolth et al.
patent: 4556483 (1985-12-01), Fu et al.
patent: 4584097 (1986-04-01), Fu et al.
Oyamada et al., "Reaction of Alkyl Alkoxycarbonylthiocarbamates with Ammonia," Nippon Nogei Kagaku Kaishi 1976, 50 (1), 23-7, (Japanese), (CA 85:5171w).

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