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Machine translation
1. (WO1981000526) METHOD OF PROCESSING PYRITE-CONTAINING POLYMETALLIC RAW MATERIAL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/000526    International Application No.:    PCT/SU1979/000071
Publication Date: 05.03.1981 International Filing Date: 21.08.1979
IPC:
B03B 1/02 (2006.01), C22B 1/02 (2006.01)
Applicants:
Inventors:
Priority Data:
SU79/00071 21.08.1979 WO
Title (EN) METHOD OF PROCESSING PYRITE-CONTAINING POLYMETALLIC RAW MATERIAL
(FR) METHODE DE TRAITEMENT D"UN MATERIAU BRUT POLYMETALLIQUE CONTENANT DE LA PYRITE
Abstract: front page image
(EN)The method provides for the heating of the said raw material in a reducing atmosphere at a temperature of 450 to 500 C during 30 to 60 minutes. Hydrogen or products of conversion of the natural gas or of fuel-oil may be used as reducing atmosphere. The thus burnt copper-containing product is then cooled at a rate of 2 to 4 degrees per minute and subjected to a magnetic separation. The magnetic separation is carried out in two stages, ferrous sulphides being first extracted under a magnetic field intensity of 1000 to 2000 oersteds and then copper sulphides are extracted under a magnetic field intensity of 4500 to 6000 oersteds.
(FR)La methode consiste a chauffer ce materiau brut dans une atmosphere reductrice a une temperature de 450 a 500 C pendant 30 a 60 minutes. Comme atmosphere de reduction, on peut utiliser l"hydrogene ou les produits de conversion du gaz naturel ou du mazout. Le produit brule contenant du cuivre est alors refroidi a une vitesse de 2 a 4 C par minute et soumis a une separation magnetique. La separation magnetique s"effectue en deux etapes, les sulfures de fer etant extraits en premier sous une intensite de champ magnetique de 1000 a 2000 oersteds puis les sulfures de cuivre sont extraits sous une intensite de champ magnetique de 4500 a 6000 oersteds.
Designated States:
Publication Language: Russian (RU)
Filing Language: Russian (RU)