Purification of elemental sulphur

Details Purification of elemental sulphur Purification of elemental sulphur

C - Chemistry, Metallurgy

01

B

C01B 17/033 (2006.01) C22B 3/12 (2006.01) C22B 43/00 (2006.01)

Patent

CA 2173271

A process for removing mercury from elemental sulphur contaminated therewith by liquid-liquid contact by mixing of the contaminated elemental sulphur in a molten state with an aqueous solution containing sulphide and polysulphide anions for extraction of the mercury contaminant from the elemental sulphur into the aqueous sulphide solution, and separating the aqueous sulphide solution containing mercury contaminant from the molten elemental sulphur to provide an elemental sulphur product substantially free from mercury.

Méthode pour éliminer le mercure dans du soufre élémentaire contaminé par celui-ci, par mise en contact liquide-liquide, en mélangeant le soufre élémentaire contaminé, à l'état fondu, avec une solution aqueuse contenant des anions sulfure et polysulfure; cela permet d'extraire le mercure contaminant et de le faire passer du soufre élémentaire dans la solution aqueuse de sulfure, puis de séparer du soufre élémentaire fondu la solution aqueuse de sulfure contenant le mercure pour l'obtention de soufre élémentaire pratiquement exempt de mercure.

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