Sulphation of a Greek complex sulphide concentrate

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1990 (EN)
Sulphation of a Greek complex sulphide concentrate (EN)

Scordilis, D (EN)
Neou-Syngouna, P (EN)

N/A (EN)

Catalytic sulphation roasting of a complex sulphide concentrate (Kirki, Greece) containing 35.3% Zn, 15.1% Pb and 8.6% Fe, was carried out to sulphate zinc and lead and transform iron sulphides to haematite. Subsequent leaching with a very dilute acid solution at room temperature dissolved the soluble zinc sulphate; insoluble lead sulphate and haematite remained in the residue. The influence of the experimental variables; roasting temperature (500-600°C); duration of roasting (15-240 min); amount of oxygen (100-140% stoichiometric amount); and ratio of concentrate to catalyst (8:1 to 1:1) have been studied. Under optimum conditions, 550°C, 3 h, 120% stoichiometric amount of oxygen and 4:1 ratio of concentrate to catalyst, the recovery of zinc was 60% and the iron dissolution 1%. A two-stage roasting under similar conditions improved zinc recovery to 85%, while the dissolution of iron remained low (3%). © 1990. (EN)


Complex Sulfide Concentrate (EN)
Zinc Sulfide - Oxidation (EN)
Zinc Metallurgy - Research (EN)
Catalytic Sulfation Roasting (EN)
Lead Zinc Deposits - Greece (EN)
Zinc Ore Treatment (EN)
Water Soluble Metal Sulfates (EN)
Hydrometallurgy - Leaching (EN)
Zinc Recovery (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Hydrometallurgy (EN)




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