Process of recovery of sulphur from minerals containing pyrites

Details Process of recovery of sulphur from minerals containing pyrites Process of recovery of sulphur from minerals containing pyrites

1987-04-15

1988-03-08

Doll, John

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

23299, 423 29, 423 47, 423 87, 423150, 423153, 423567A, B01D 1102, C01B 17033, C01B 1706, C01G 4900

Patent

active

047298880

ABSTRACT:
Production of elementary sulphur from an iron sulphide mineral, which comprises oxidizing acid lixiviation of the pulverized mineral, for extraction of the sulfur. The pulp obtained from the lixiviation is treated in the hot with an organic solvent for sulphur, the solvent having a density higher than 1, to separate this pulp into an aqueous phase containing in solution the non-ferrous metals, the sulphates of which are water soluble, and into a suspension of the solid of the pulp in an organic phase consisting of a solution of sulphur in the solvent separated by decantation and, after separation of the solid in suspension in the organic phase, the sulphur is recovered by crystallization after cooling of the organic phase.

REFERENCES:
patent: 635199 (1899-10-01), Smith
patent: 2118140 (1938-05-01), Beattie
patent: 2898197 (1959-08-01), Forward et al.
patent: 3053651 (1962-09-01), McGauley

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