METHOD FOR FLOTATION EXTRACTION OF COPPER AND MOLYBDENUM Russian patent published in 2022 - IPC B03D1/02 

FIELD: non-ferrous metal ores enrichment.

SUBSTANCE: invention relates to the field of enrichment of non-ferrous metal ores and can be used in the flotation enrichment of copper-molybdenum ores. The method for flotation extraction of copper and molybdenum from copper-molybdenum ores includes successive conditioning of the pulp in the presence of a depressant, a main collector and a composite reagent, the introduction of a blowing agent and the separation of copper and molybdenum sulfides into a foam product. As a composite reagent, a mixture of a finely emulsified solution of kerosene with diisobutyl dithiophosphinate, which has selective properties with respect to copper and molybdenum sulfides, is used. The ratio of kerosene and diisobutyldithiophosphinate is from 0.5:1 to 1:2.

EFFECT: increasing the selectivity of the extraction of copper and molybdenum into the collective concentrate with a simultaneous improvement in its quality by increasing the content of recoverable metals in it and reducing the amount of iron-containing sulfides (pyrite and pyrrhotite).

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