System and method for conversion of molybdenite to one or...

C - Chemistry – Metallurgy – 01 – G

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C01G 39/00 (2006.01) C01G 39/02 (2006.01) C22B 34/34 (2006.01)

Patent

CA 2670060

A system and method for producing molybdenum oxide(s) from molybdenum sulfide are disclosed. The system includes a pressure leach vessel, a solid-liquid separation stage coupled to the pressure leach vessel, a solvent-extraction stage coupled to the solid-liquid separation stage, and a base stripping stage coupled to the solvent-extraction stage. The method includes providing a molybdenum sulfide feed, subjecting the feed to a pressure leach process, subjecting pressure leach process discharge to a solid-liquid separation process to produce a discharge liquid stream and a discharge solids stream, and subjecting the discharge liquid stream to a solvent extraction and a base strip process.

L'invention concerne un système et un procédé de production d'oxyde(s) de molybdène à partir de sulfure de molybdène. Le système comprend un récipient de lixiviation sous pression, un étage de séparation solide-liquide accouplé au récipient de lixiviation sous pression, un étage d'extraction par solvant accouplé à l'étage de séparation solide-liquide, et un étage de lavage avec une base accouplé à l'étage d'extraction par solvant. Le procédé consiste à utiliser une charge de sulfure de molybdène, à soumettre la charge à un procédé de lixiviation sous pression, à soumettre l'évacuation résultant du procédé de lixiviation sous pression à un procédé de séparation solide-liquide afin de produire un flux d'évacuation de liquide et un flux d'évacuation de solides, et à soumettre le flux d'évacuation de liquide à une extraction par solvant et à un procédé de lavage avec une base.

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