Pressure Leaching of Chalcopyrite Concentrate: Iron Removal from Leaching Residues

Abstract:

Autoclave oxidative leaching is one of the most promising hydrometallurgical approaches for copper suplhide materials processing. In previous studies [2–4], the possibility of an efficient autoclave treatment of chalcopyrite concentrate was confirmed. The concentrate has the following chemical composition, %: 21.5 Cu, 0.1 Zn, 26.5 S, 24.5 Fe, 0.05 Pb, 0.04 Ni, 16.2 SiO₂ [1]. At high temperature conditions (190–200 °C; 4–6 bar) in sulfuric-acid media during 100–120 min about 98% Cu was extracted. A leaching residue after POX (POX-cake) contained the following compounds, %: 55 Fe₂O₃, 40 SiO₂, 4 MeS₂/MeS. Current paper presents the results on purification of POX-cakes from iron by autoclave treatment. Futher ways for by-products (SiO₂-cake and FeSO₄-solution) processing are sugested.

• Periodical: Solid State Phenomena (Volume 299)
• Pages: 1052-1057
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.299.1052
• Online since: January 2020
• Authors: Aleksei Kritskii*, Kirill Karimov, Stanislav Naboichenko
• Keywords: Cake, Chalcopyrite Concentrate, Copper, Hydrometallurgy, Iron, Pressure Leaching

References

[1] I.A. Altushkin, А.Е. Cherepovitsin, J.А. Korol, Practical implementation of the mechanism of sustainable development in the creation and formation of the mining and metallurgical holding of the copper industry in Russia, Publishing house «Ore and Metals», Moscow, (2016).

[2] A.V. Kritskii, К.А. Karimov, S.S. Naboichenko, High-temperature leaching of chalcopyrite concentrate, Conference proceedings of IX international congress «Non-ferrous metals and minerals 2017», Krasnoyarsk, Russia, 1 (2017) 1089–1091.

[3] A.V. Kritskii, K.A. Karimov, S.S. Naboichenko, Low-temperature leaching of chalcopyrite concentrate, Conference proceedings of IX international congress «Non-ferrous metals and minerals 2017», Krasnoyarsk, Russia, 1 (2017) 1081–1083.

[4] A.V. Kritskii, K.A. Karimov, S.S. Naboichenko, Pressure leaching of chalcopyrite concentrate, International seminar on metallurgy and materials (ISMM 2017), AIP Conference Proceedings 1964, 020048 (2018).

DOI: 10.4028/www.scientific.net/ssp.299.1052

[5] Information on http://www.bhpbilliton.com/home/investors/reports/Documents/ 2012/ 1210 01 _ Escondida%20Site%20Visit% 20Presentation.pdf.

[6] Mudd, G.M., The environmental sustainability of mining in Australia: key mega- trends and looming constraints, Resour, 1 (2010) 98–115.

DOI: 10.1016/j.resourpol.2009.12.001

[7] Information on http://www.indexmundi.com/en/commodities/minerals/copper/copper_t20. html.

[8] Information on http://www.indexmundi.com/en/commodities/minerals/copper/copper_t40. html.

[9] D. Dreisinger, Copper leaching from primary sulfides: options for biological and chemical extraction of copper, Hydrometallurgy 83 (2006) 10–20.

DOI: 10.1016/j.hydromet.2006.03.032

[10] R. Padilla, D. Vega, M.C. Ruiz, Pressure leaching of sulfidized chalcopyrite in sulfuric acid-oxygen media, Hydrometallurgy 86 (2007) 80–88.

DOI: 10.1016/j.hydromet.2006.10.006

[11] S. Wang, Copper leaching from chalcopyrite concentrates, Copper and Nickel production (Overview), JOM, (2005) 48–51.

DOI: 10.1007/s11837-005-0252-5

[12] F.P. Haver, M.M. Wong, Recovery of copper, iron, and sulfur from chalcopyrite concentrate using a ferric chloride ceach, J. Metals, 23 (2) (1971) 25–29.

DOI: 10.1007/bf03355683

[13] T.A. Phillips, Economic evaluation of a process for ferric chloride leaching of chalcopyrite concentrate, BuMines IC, 8699 (1976) 22.

[14] R. Romero, A. Mazuelos, I. Palencia, F. Carranza, Copper Recovery from Chalcopyrite Concentrates by the BRISA Process, Hydrometallurgy 70 (2003) 205–215.

DOI: 10.1016/s0304-386x(03)00081-1

[15] M. Liyuan, W. Xingjie, L. Xueduan, W. Shanquan, W. Hongmei. Intensified bioleaching of chalcopyrite by communities with enriched ferrous or sulfur oxidizers, Bioresource Technology, 268 (2018) 415–423.

DOI: 10.1016/j.biortech.2018.08.019

[16] J. Peacey, X. Guo, E. Robles, Copper hydrometallurgy — current status, preliminary economics, future direction and positioning versus smelting, Trans. Nonferrous Met. Soc. (2003) 560–568.

[17] Plotinskaya O., Azovskova O., Abramov S., Groznovaa E., Novoselov K., Seltmann R., Spratt J. Precious metals assemblages at the Mikheevskoe porphyry copper deposit (South Urals, Russia) as proxies of epithermal overprinting. Ore Geology Reviews 94 (2018) 239–260.

DOI: 10.1016/j.oregeorev.2018.01.025

[18] O'Malley, M.L., Liddell, K.C. Leaching of CuFeS2 by aqueous FeCl3, HCl and NaCl: effects of solution composition and limited oxidant. Metallurgical Transactions B 18 (1987) 505–510.

DOI: 10.1007/bf02654262

[19] Schippers, A., Hedrich, S., Vasters, J., Drobe, M., Sand, W., Willscher, S., 2014. Biomining: metal recovery from ores with microorganisms. In: Schippers, A., Glombitza, F., Sand, W. (Eds.), Geobiotechnology I – Metal-related Issues. Advances in Biochemical Engineering & Biotechnology, vol. 141 Springer, Heidelberg.

DOI: 10.1007/10_2013_216

[20] Watling, H.R. Chalcopyrite hydrometallurgy at atmospheric pressure: 2. Review of acidic chloride process options. Hydrometallurgy 146 (2014) 96–110.

DOI: 10.1016/j.hydromet.2014.03.013

[21] Naboichenko, S.S., Ni, L., Shneerson, Y, Chugaev, L. Autoclave hydrometallurgy of non-ferrous metals. 2nd ed. Naboichenko S, editor. Yekaterinburg: GOU Ural State Polytechnic University - UPI; (2002).

DOI: 10.1134/s1070427208120318