JSC Kola Mining and Metallurgical Company, Monchegorsk, Russia:

D. P. Tyukin, Chief Specialist, Pyrometallurgical Department of the Research and Development Section of the Control and Analytical Center, e-mail: TyukinDP@kolagmk.ru

K. M. Volchek, Chief Specialist, Hydrometallurgical Department of the Research and Development Section of the Control and Analytical Center

I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials. KSC RAS, Apatity, Russia:

A. G. Kasikov, Head of the Laboratory for the Development and Implementation of Chemical Technology Processes
N. S. Areshina, Senior Researcher

A special feature of lead during the pyrometallurgical processing of raw materials is its ability to sublimate and concentrate in metallurgical dust. Due to the fact that dust is used in copper-nickel production, the task to remove lead out of it is of great current interest. On the base of laboratory studies, a technological scheme has been developed for the processing of fine dusts of nickel concentrate roasting in fluidized bed furnaces retained in electrostatic precipitators of the Kola Mining and Metallurgical Company refining plant. The scheme is based on the water leaching of non-ferrous metals sulphates and subsequent leaching lead out of the residue using chloride solutions. To separate lead in leaded cake, the chloride solution is diluted by sulphatecontaining solutions. According to the research results, a project has been developed and a roasting dust deleading area has been built. Industrial tests of the technology enabled to optimize the process and ensure high lead extraction with obtaining leaded cakes containing up to 66% of lead. During the industrial testing period, 295 kg of lead were removed out of dust to the cake. In accordance with the assessment, at the stable operation of the production area no less than 9 tons of lead per year can be extracted into the cake that will improve the quality of cathode nickel at Kola MMC, reduce the amount of lead in the shop's turnover, increase the complexity of using raw materials, and expand the range of products sold by JSC Kola MMC.

1. Kasikov A. G. Dust emissions of copper and nickel production and consequences of their impact on human organism in conditions of Extreme North. Vestnik Kolskogo nauchnogo tsentra RAN. 2017. No. 4. pp. 57–63.
2. Kasikov A. G., Khomchenko O. A., Skorokhodov V. I., Ponomarev А. А., Lebedeva L. P., Voronova R. S. Comprehensive processing fine dust of nickel production Severonikel integrated plant. Tsvetnye Metally. 1996. No. 7. pp. 16–20.
3. Khomchenko O. A., Sadovskaya G. I., Dubrovskiy V. L., Smirnov P. V., Tsapakh S. L. Development and implementation of chlorine technology of nickel and cobalt at JSC “Kola MMC”. Tsvetnye Metally. 2014. No. 9. pp. 81–88.
4. Klimov N. I., Kasikov A. G. Study on leaching fine dust of nickel concentrate roasting of JSC “Kola MMC”. Trudy Kolskogo nauchnogo tsentra RAN. 2017. No. 5. Iss. 1. Khimiya i materialovedenie. pp. 77–83.
5. Sergeeva Yu. F., Mamyachenkov S. V., Sergeev V. A., Gallyamovа N. R. The state-of-the-art methods for processing dusts of copper-smelting plants. Butlerovskie soobshcheniya. 2012. Vol. 30, No. 5. pp. 1–19.
6. Margulis E. V., Archinova E. A. Alkali lead leaching during comprehensive hydrometallurgical processing lead and zinc fumes. Tsvetnye Metally. 1989. No. 3. pp. 49–51.
7. Margulis E. V., Khodov N. V. Hydrometallurgical extraction of lead out of cakes and dusts. Tsvetnye Metally. 1990. No. 6. pp. 29, 30.
8. Mehmet ahin, Mehmet Erdem. Cleaning of high lead-bearing zinc leaching residue by recovery of lead with alkaline leaching. Hydrometallurgy. 2015. Vol. 153. pp. 170–178.
9. Sorokina V. S., Smirnov M. P. Hydrometallurgical method for processing lead raw materials by acetate solutions. Tsvetnye Metally. 1990. No. 6. pp. 28, 29.
10. Ter-Oganesyants A. K., Grabchak E. F., Anisimova N. N., Lapshin D. A., Dylko G. N., Luchitsky S. L. Technology for removeing lead out of slam production of PD MMC “Norilsk Nickel”. Tsvetnye Metally. 2006. No. 11. pp. 27–30.
11. Sergeev V. A., Sergeeva Yu. F., Mamyachenkov S. V., Anisimova O. S., Karelov S. V. Processing anthropogenic lead-containing industrial products using solutions of complexing agents. Metallurg. 2013. No. 1. pp. 83–85.
12. Geidarov A. A., Akhmedov M. M., Karimov M. A., Valiev B. S., Efendieva S. G. Kinetics of leaching of lead sulfate in sodium chloride solutions. Russian Metallurgy (Metally). 2009. No. 6. pp. 469–472.
13. Sinadinovic D., Kamberovic Z., Sutic A. Leaching kinetics of lead from lead (II) sulphate in aqueous calcium chloride and magnesium chloride solutions. Hydrometallurgy. 1997. Vol. 47 (1). pp. 137–147.
14. Guo Zhao-hui, Pan Feng-kai, Xiao Xi-yuan, Zhang Long, Jiang Kai-qi. Optimization of brine leaching of metals from hydrometallurgical residue. Trans. Nonferrous Met. Soc. China. 2010. Vol. 20. pp. 2000–2005.
15. Chmielewski T., Gibas K., Borowski K., Adamski Z., Wozniak B., Muszer A. Chloride leaching of silver and lead from a solid residue after atmospheric leaching of flotation copper concentrates. Physicochem. Probl. Miner. Process. 2017. Vol. 53 (2). pp. 893–907.
16. Behnajady Bahram, Moghaddam Javad. Chloride leaching of lead and silver from refractory zinc plant residue. Research Journal of Chemistry and Environment. 2011. Vol. 15 (2). pp. 473–480.
17. Golpayegany Mohammad Hasan, Abdollahzaden Ali Akbar. Optimization of operating parameters and kinetics for chloride leaching of lead from melting furnace slag. Trans. Nonferrous Met. Soc. China. 2017. Vol. 27. pp. 2704–2714.
18. Kasikov A. G., Volchek K. M., Mikheeva I. A. Production of silver concentrate from middlings of JSC “Kola MMC”. Trudy Kolskogo nauchnogo tsentra RAN. 2015. No. 5 (31). Khimiya i materialovedenie. Special issue. pp. 133–136.