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ArticleName Behavior of Сu, Zn, Pb, As compounds during copper-zinc concentrate and matte comelting in converters
DOI 10.17580/nfm.2020.02.02
ArticleAuthor Dosmukhamedov N. K., Zholdasbay E. E., Argyn A. A., Kurmanseitov M. B.

Satbaev University, Almaty, Kazakhstan:

N. K. Dosmukhamedov, Professor, Department of Metallurgy and Mineral Processing, e-mail:
E. E. Zholdasbay, Doctoral Student, Department of Metallurgy and Mineral Processing
A. A. Argyn, Doctoral Student, Department of Metallurgy and Mineral Processing
M. B. Kurmanseitov, Doctoral Student, Department of Metallurgy and Mineral Processing


The practicability of improving the existing technology of converting copper mattes by comelting with the difficult-toprocess high-sulfur copper-zinc concentrate. The basis for research in the behavior of non-ferrous metals, arsenic and antimony is thermodynamic analysis of the reactions of matte components, converter slag and copper-zinc concentrate interaction in the temperature range 1073–1573 K. The behaviour mechanism of copper, zinc, lead, arsenic, and antimony compounds during co-processing of copper-zinc concentrate with matte is established. High values of the Gibbs free energy of reactions of interaction between oxides of lead and zinc with elemental sulfur, sulfides of non-ferrous metals and iron show the feasibility of the highest possible extraction of lead and zinc into dust in the form of their volatile compounds: sulfides, as well as oxides of lead and zinc in the metallic state in the form of gas. There is shown the possibility of the highest possible extraction of arsenic and antimony into dust by means of converting their nonvolatile pentavalent oxides (As2O5, Sb2O5) into volatile trivalent oxides (As2O3, Sb2O3) and non-toxic sulfides (As2S3, Sb2S3) by the converter slag sulfidizing with the components of copper–zinc concentrate: elemental sulfur and iron sulfide. Direct processing of copper-zinc concentrate in converter allows selective extracting copper into matte as well as lead and zinc into a rich semiproduct suitable for their extraction by existing technologies. It is shown that a significant quality improvement of the resulting converter slag and blister copper is achieved by the high sublimation of arsenic and antimony into dust under conditions of converting copper-lead mattes together with a high-sulfur concentrate.

keywords Сopper matte, conversion, copper-zinc concentrate, copper, lead, zinc, arsenic, antimony, Gibbs free energy, comelting, sulfidizing, thermodynamic analysis

1. Schlesinger M. E., King M. J., Sole K. C., Davenport W. G. Extractive Metallurgy of Copper. 5th Ed. Elsevier. 2011. 472 р.

2. Pyzhov S. S., Makarova S. N. Perfection of the Copper Conver ting Process Abroad. Tsvetnye Metally. 1987. No. 6. pp. 31–35.
3. Montilio I. A., Babadzhan A. A. Main directions of Improving Converter Processing Stages of a Brass Works. Tsvetnye Metally. 1987. No. 11. pp. 66–69.
4. Bulatov K. V., Skopov G. V., Skopin D. Yu., Yakornov S. A. Processing of Polymetallic Concentrates in Melting Facility “Pobeda” (LLC “Mednogorsk Copper-Sulfur Combine”). Tsvetnye Metally. 2014. No. 10. pp. 39–44.
5. Orlov A. K., Konovalov G. V., Boduen A. Ya. Pyrometallurgical Selection of Copper-Zinc Materials. Journal of Mining Institute. 2011. Vol. 192. pp. 65–68.
6. Mechev V. V., Bystrov V. P., Tarasov A. V. et al. Autogenous Processes in Non-Ferrous Metallurgy. Мoscow: Metallurgiy, 1991. 413 p.
7. Dosmukhamedov N. K., Egizekov M. G., Onaev I. A. Research on the Kinetics of Interaction Between the Converter Slag Components and Sulphide Copper Concentrate. Kompleksnoye ispolzovanie mineralnogo syriya. 1990. No. 11. pp. 47–51.
8. Dosmukhamedov N., Egizekov M., Zholdasbay E., Kaplan V. Metals Recovery from Converter Slags Using a Sulfiding Agent. JOM. 2018. Vol. 70, Iss. 10. pp. 2400–2406.
9. Dosmukhamedov N. К., Fedorov A. N., Zholdasbay E. E., Argyn A. A. Investigation of Cu, Pb, Zn, As, Sb Distribution During the Lead Semiproducts and Copper-Zinc Concentrate Comelting. Non-ferrous Metals. 2020. № 1. pp. 8–14. DOI: 10.17580/nfm.2020.01.02.
10. Raimbekov N. E., Bystrov V. P., Vanyukov A. V. Study of Interaction Between Sulphides and Slag Magnetite. Tsvetnye Metally. 1983. No. 8. pp.19–21.
11. Kubaschewski O., Alcock C. B. Metallurgical Thermochemistry. Мoscow: Metallurgiy, 1982. 392 p.
12. Rabinovich V. A., Khavin E. Ya. Brief Chemical Reference Book. 3rd Ed. Leningrad: Khimiya, 1991. 432 p.
13. Dosmukhamedov N. K., Argyn A. A., Zholdasbay E. E. Behaviour of Copper Compounds and Accompanying metal Impurities in the Process of Converting Copper-Lead Mattes. Higher School: Scientific Research : Collection of the Interuniversity Scientific Congress. Moscow : Izdatelstvo Infiniti, 2020. pp. 127–139.
14. Wang Q., Guo X., Tian Q., Chen M., Zhao B. Reaction Mechanism and Distribution Behavior of Arsenic in the Bottom Blown Copper Smelting Process. Metals. 2017. Vol. 7, Iss. 8. 302. DOI: 10.3390/met7080302.
15. Wang Q., Guo X., Tian Q., Jiang Т., Chen М., Zhao В. Effects of Matte Grade on the Distribution of Minor Elements (Pb, Zn, As, Sb, and Bi) in the Bottom Blown Copper Smelting Process. Metals. 2017. Vol. 7, Iss. 11. 502. DOI: 10.3390/met7110502
16. Skopov G. V., Koryukin E. B. A Mathematical Model of Smelting of a Sulfide Particle in Slag Melt. Tsvetnye Metally. 2004. No. 4. pp. 34–37.
17. Kozhakhmetov S. M., Penzimonzh I. A., Tseft A. L. et al. Rate of Lead Sulphide Volatilization in Atmosphere of Different Gases at 900–1400 °С. Khimiya i metallurgiya. Irkutsk, 1960. pp. 117–124.
18. Diev N. P., Gofman I. P. Metallurgy of Lead and Zinc. Moscow : GNTI, 1961. 401 p.
19. Isakova R. A. Pressure of Vapor of Non-Ferrous Metal Sulphides. Alma-Ata : Izdatelstvo Akademii Nauk Kazakhskoi SSR, 1963. 130 p.
20. Zbуzhneva S. G., Makarov A. V. Mass-Spectral Study of Steam Over Nanocrystal Zinc Oxide. Moscow University Chemical Bulletin. 2002. Vol. 43. No. 3. p. 143.

Full content Behavior of Сu, Zn, Pb, As compounds during copper-zinc concentrate and matte comelting in converters