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ArticleName Thermodynamic analysis of copper matte and concentrates converting in a two–zone Vanyukov's furnace
ArticleAuthor Tsymbulov L. B., Pigarev S. P., Jak E.
ArticleAuthorData

Gipronickel Institute Ltd

L. B. Tsymbulov, Chief Researcher, e-mail: Lbcym@nickel.spb.ru
S. P. Pigarev, Junior Researcher, Laboratory of Pyrometallurgy

 

Queensland University, Australia
E. Jak, Professor, Pyrometallurgical Research Center

Abstract

The paper presents a thermodynamic analysis of the continuous converting on copper nickel containing matte and concentrates in a two-zone Vanyukov’s furnace with blister copper production. Thermodynamical analysis has been executed, using FactSage program package. For the oxidizing stage of the process the influence of temperature, fluxing agents consumption, ratio of SiO2 and СаО containing fluxes on the principle technological indices of the process was studied. It has been determined, that concentration of iron-nickel spinels on the trevorite (NiFe2O4) base has been essentially changed due to change of fluxed components consumption in slags. Optimal temperature range of oxidation process stage conduction and optimal consumption of fluxed components have been recommended. Influence of specific consumption of oxygen on oxidation process stage has been shown. Optimal correspondence of SiO2/CaO in slag has been determined. For the reduction stage there was studied the influence of the coefficient of oxygen consumption blow (“alpha”) on the produced blister copper composition and on metals recovery. Limiting concentration of copper in slag between slag melt of reduction zone and forming copper-nickel melt as a result has been established. Expediency of reduction process stage usage has been shown. Executed researches are fundamental base for realization of further experimental researches. Also they has been used as a base of mathematical model and algorithm of continuous converting process control.

keywords Thermodynamic analysis, copper matte, copper concentrate, two-zone Vanyukov's furnace, blister copper, slags, oxidation stage, reduction stage
References

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2. Vanyukov A. V., Utkin N. I. Kompleksnaya pererabotka mednogo i nikelevogo syrya. (Integrated Processing of Copper and Nickel Raw Materials). Chelyabinsk, 1988. 432 pp.

3. Vanyukov A. V., Bystrov V. P., Vaskevich A. D. and etc. Plavka v zhidkoy vanne. Pod red. A. V. Vanyukova (Melting in the Liquid Bath. Ed. by A. V. Vanyukov). Moscow, 1988. 207 pp.

4. Tsymbulov L. B., Knyazev M. V., Tsemekhman L. Sh., Golov A. N. Proceedings of the sixth international Copper-Cobre Conference, The Carlos Diaz Symposium on Pyrometallurgy. Toronto, Ontario (Canada), Aug. 25–30, 2007. Vol. III (Book 1). pp. 397—409.

5. Patent 2359046 RF. Sposob pererabotki mednykh sulfidnykh materialov na chernovuyu med. Method of copper sulphide materials processing to blister copper. Tsymbulov L. B., Knyazev M. V., Tsemekhman L. Sh. ; published. 09.01.2008.

6. Tsemekhman L. Sh., Tsymbulov L. B., Knyazev M. V., Kaytmazov N. G., Fomichev V. B. Tsvetnye metally. Non-ferrous metals. 2009. No. 9. pp. 43–48.

7. Tsymbulov L. B., Tsemekhman L. Sh., Knyazev M. V., Fedorov M. S., Galantsev V. N. Tsvetnye metally. Non-ferrous metals. 2004. No. 12. pp. 36–42.

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10. Jak E., Tsymbulov L. Proceedings of Copper Conference — Hamburg (Germany), June 6–10, 2010. Vol. 2. pp. 793–811.

11. Tsymbulov L. B., Kolosova E. Yu., Knyazev M. V. Tsvetnye metally. Non-ferrous metals. 2009. No. 7. pp. 30–36.

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