Flotation of copper sulfide ores with improved thionocarbamates

Details Flotation of copper sulfide ores with improved thionocarbamates Flotation of copper sulfide ores with improved thionocarbamates

1974-06-26

1976-08-17

Halper, Robert

Classifying, separating, and assorting solids

Fluid suspension

Liquid

B03D 102

Patent

active

039752640

ABSTRACT:
High-purity dialkyl thionocarbamates are economically produced by reacting suitable xanthates with alkyl amines in the presence of a dissolved catalyst. Nickel and palladium salts are preferred catalysts. Thionocarbamates produced by the method of the invention are a desirable flotation reagent for certain refractory copper sulfide ores.

REFERENCES:
patent: 1497699 (1924-06-01), Sayre
patent: 1640218 (1927-08-01), Sayre
patent: 1674166 (1928-06-01), Douglass
patent: 2691635 (1954-10-01), Marris
patent: 2723989 (1955-11-01), Harman
patent: 3590997 (1971-07-01), Marris
patent: 3590999 (1971-07-01), Marris

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