JSC “Chelyabinsk Zinc Plant”, Chelyabinsk, Russia:

P. A. Kozlov, Head of Engineering Center, e-mail: pak@zinc.ru
V. N. Vyatkin, Leading Production Engineer of Engineering Center
Yu. V. Reshetnikov, Deputy Technical Director – Head of Production Department

LLC “UMMC-Holding”, Verkhnyaya Pyshma, Russia:
A. M. Panshin, Technical Diretor

This article considers the possible methods of processing of copper production dusts with extraction of Zn, Pb and Sn. Urgency of processing of these raw materials at zinc plants is defined by exhaustion of natural reserves of Zn ores, increased amounts of cumulation of defined zinc-containing product in copper industry, and solving of ecological problems. Waelz-processing together with other oxidized Zn – Pb-containing materials and Waelz-oxide processing are the existing dust processing technologies, which solve the problem of Zn extraction in solution and Pb extraction in solid product, required for pyrometallurgical technology. Taking into account economic reasonability of Sn extraction from copper production dusts, the task of this metal transfer during processing in concentrated product is still urgent. On the basis of the data of chemical and phase analysis of copper production dusts, and research of thermodynamic and kinetic parameters of pyrometallurgical processes, there is developed the technology of selective extraction of Zn into solution for hydrometallurgical processing. At the same time, Pb is extracted in concentrated product with its content of 40–50% and extraction rate of 95–99%, while Sn is extracted into product, containing 10–20% of this component, with extraction rate of 60–64%. Technology includes the pyrometallurgical stage – roasting of raw materials with Pb removement in sublimates and cinder hydrometallurgical processing stage. Pb is transferred in sulfide form for efficient distillation. There are given the data about technological parameters of roasting and content of obtained product. Extraction of Zn and Sn in cinder is 90% and 70–75%, respectively. Sublimation rate of Pb is 98–99%.

1. Kozlov P. A. Osvoenie protsessov retsiklinga tekhnogennykh otkhodov tsvetnoy metallurgii (Mastering of processes of recycling of anthropogenic wastes of non-ferrous metallurgy). Izvestiya vuzov. Tsvetnaya metallurgiya = Russian Journal of Non-Ferrous Metals. 2014. No. 2. pp. 45–52.
2. Vyatkin V. N., Kozlov P. A., Ivakin D. A. Razrabotka tekhnologii izvlecheniya tsinka, olova i svintsa iz vtorichnogo tekhnogennogo syrya (Development of technology of extraction of zinc, tin and lead from secondary anthropogenic raw materials). Trudy kongressa s mezhdunarodnym uchastiem i elementami shkoly molodykh uchenykh “Fundamentalnye issledovaniya i prikladnye razrabotki protsessov pererabotki i utilizatsii tekhnogennykh obrazovaniy” (Proceedings of congress with international participation and elements of young scientists' school “Fundamental researches and applied developments of processes of utilization and processing of anthropogenic formations”). Ekaterinburg : Ural Department of Russian Academy of Sciences, 2014. 552 p.
3. Panshin A. M., Leontev L. I., Kozlov P. A., Dyubanov V. G., Zatonskiy A. V., Ivakin D. A. Tekhnologiya pererabotki pyli elektrodugovykh pechey Otkrytogo Aktsionernogo Obshchestva “Severstal” v velts-komplekse Otkrytogo Aktsionernogo Obshchestva “Chelyabinskiy Tsinkovyy Zavod” (Technology of processing of JSC “Severstal” electric-arc furnaces dust in Waelz-complex of JSC “Chelyabinsk Zinc Plant”). Ekologiya i promyshlennost Rossii = Ecology and industry of Russia. 2012. No. 11. pp. 4–6.
4. Panshin A. M., Kozlov P. A., Zatonskiy A. V., Gizatulin O. V., Ivakin D. A. Sozdanie tekhnologii prokalki velts-oksida s ispolzovaniem krupnogabaritnoy trubchatoy pechi (Creation of technology of Waelz-oxide calcination using large pipe furnace). Tsvetnye Metally = Non-ferrous metals. 2010. No. 5. pp. 17–20.
5. Kozlov P. A. Velts-protsess (Waelz-process). Moscow : “Ore and Metals” Publishing House, 2002. 176 p.
6. Panshin A. M., Ivakin D. A., Vyatkin V. N. Termodinamicheskiy i kineticheskiy analiz otgonki tsinka, svintsa i olova v velts-pechi pri pererabotke pylevidnykh polimetallicheskikh promproduktov mednoy promyshlennosti (Thermodynamic and kinetic analysis of distillation of zinc, lead and tin in Waelz-klin during processing of powder-like polymetallic middlings of copper industry). Tsvetnye Metally = Non-ferrous metals. 2013. No. 8. pp. 41–44.
7. Kozlov P. A., Panshin A. M., Zatonskiy A. V., Leontev L. I., Reshetnikov Yu. V., Dyubanov V. G. Degtyarev A. M., Ivakin D. A. Shikhta dlya veltsevaniya tsinksvinetsolovosoderzhashchikh materialov (Charge for Waelz processing of zinc-lead-containing materials). Patent RF, No. 2509815, IPC С 22 В 19/38, С 22 В 7/02. Applier and patent-holder: JSC “Chelyabinsk Zinc Plant”. Applied: July 31, 2012. Published: February 10, 2014. Bulletin No. 4.
8. Kozlov P. A., Panshin A. M., Shakirzyanov R. M., Zatonskiy A. V., Leontev L. I., Reshetnikov Yu. V., Dyubanov V. G., Degtyarev A. M., Ivakin D. A. Sposob veltsevaniya okislennykh tsinksoderzhashchikh materialov (Method of Waelz processing of oxidized zinc-containing materials). Patent RF, No. 2516191, IPC С 22 В 19/38, С 22 В 7/00. Applier and patent-holder: JSC “Chelyabinsk Zinc Plant”. Applied: December 29, 2012. Published: May 20, 2014. Bulletin No. 14.