On the physicochemical problems of aqueous oxidation of polymetalic gold bearing sulphide ore in an autoclave
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Faculty of Technology & Metallurgy, Karnegijeva
Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade
Zelijko Kamberović   

Faculty of Technology & Metallurgy, Karnegijeva 4, 11120 Belgrade, P. O. Box 3505, Serbia and Montenegro, tel: +381 11 3370475, fax:+381 11 3370387
Publication date: 2003-01-01
Physicochem. Probl. Miner. Process. 2003;37(1):107–114
The paper presents a study on the physical and chemical changes of iron, copper and zinc sulphide minerals in process of pressure oxidation. Oxidation in autoclave is a pre-treatment unit operation for refractory sulphide ores and concentrates in order to valorisat gold, which is encapsuled mainly in pyrite matrix. Raw materials and solid residues are charasterisated. Basing on the results of chemical reactions and on shape of solids residue, we came to a conclusion concerning the mechanism of oxidation in autoclave. The results show that modelling of the process parameters of oxidation in autoclave can be used to predict efficiency of pre-treatment of sulphide refractory ores for valorisation of gold.