Patent ID: 9045813
Filing Date: 2015-06-02
Classification: C01G,C22B,Y02P,Y10S

Abstract:
1. A process for selectively removing molybdenum from an aqueous solution which comprises molybdenum, said process comprising the following steps: bringing the solution to an acid pH less than or equal to 3 by addition of an inorganic acid; adding at least one organic solvent to the solution and stirring continuously to create a water-organic emulsion; adding at least one alkaline metal xanthate of general formula MeRX, wherein R is a linear or branched alkyl group having a carbon atom number greater than or equal to 2, Me is an alkaline metal selected from the group consisting of Li, Na, K, Rb, Cs and Fr, and X is the xanthate group, to the water-organic emulsion, to form a complex with molybdenum wherein the molar ratio molybdenum/alkaline metal xanthate ranges from 1/6 to 1/2, keeping the emulsion at an acid pH by addition of an inorganic acid, and interrupting the stirring to allow the separation of the aqueous phase from the organic phase.