Purification of elemental sulphur

Details Purification of elemental sulphur Purification of elemental sulphur

1995-04-03

1998-01-27

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423 99, 4235781, C01B 1702

Patent

active

057119295

ABSTRACT:
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.

REFERENCES:
patent: 3213006 (1965-10-01), Crain et al.
patent: 3954451 (1976-05-01), Kinoshita
patent: 5403571 (1995-04-01), Chalkley et al.

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