STABLE AQUEOUS COMPOSITION OF NEUTRAL COLLECTORS AND THEIR USE IN MINERAL BENEFICATION PROCESSES

摘要

The instant invention relates to a composition in form of a stable aqueous emulsion comprising a) 1 - 50 wt.-% of at least one water insoluble thionocarbamate collector selected from the group consisting of dialkyi thionocarbamates, alkyl alkoxycarbonyl thionocarbamates and alkyl allyl thionocarbamates, b) 1 - 50 wt.-% of one or a mixture of surface active agents of the general formula (I) wherein R1 is a saturated or unsaturated, branched or linear C3 to C30 aliphatic or aromatic hydrocarbon group, R2 and R3 are independently from each other hydrogen or a C1 to C4 alkyl group, R4 is hydrogen or -CH2-COOX where X is hydrogen or sodium salt or potassium salt or ammonium salt, and n and m are independently from each other 0 to 50, 0.1 - 20 wt.-% of a mixture of at least one alcohol and at least one ether and/or ester, e) 1 - 90 wt.-% of water.