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Journal of Mining and Metallurgy B: Metallurgy
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2013, vol. 49, br. 1, str. 1-7
Leaching of a Cu-Co ore from Congo using sulphuric acidhydrogen peroxide leachants
(naslov ne postoji na srpskom)
Chonnam National University, Department of Energy & Resources Engineering, Gwangju, Korea

e-adresatamtran@jnu.ac.kr
Ključne reči: Cu-Co ores; leaching; sulphuric acid; hydrogen peroxide; shrinking-core model; stabcal modeling
Sažetak
(ne postoji na srpskom)
A Cu-Co ore from Katinga Province, the Republic of Congo containing 1.5% Co and 1.6% Cu was tested to determine the leachability of Cu and Co using sulphuric acid and hydrogen peroxide mixtures at different conditions. Without hydrogen peroxide, the maximum extraction of copper and cobalt were found to be ~80% and ~15%, respectively when the acid concentration was varied between 0.36 - 1.1M. When hydrogen peroxide was added (0.008-0.042M), Cu recovery was enhanced to ~90%. Recoveries of ~90% of Co could be achieved at 20oC, using leachants consisting of 0.36M sulphuric acid and 0.025M hydrogen peroxide after 3 hours. The reaction time to reach 90% Co extraction was reduced to less than 2 hours at 30°C. Stabcal modelling of the Eh-pH diagrams shows the importance of hydrogen peroxide as a reductant. The decrease of solution potential (300-350 mV) by adding hydrogen peroxide was confirmed by Eh measurements during the tests. The leaching follows the shrinking core model kinetics, where the rate constant is linearly dependent on hydrogen peroxide concentration in the range 0-0.025M and proportional to (1/r2) where r is the average radius of the mineral particles. The activation energy for the leaching process is 72.3 kJ/mol.
Reference
Chen, L., Tang, X., Zhang, Y., Li, L., Zeng, Z., Zhang, Y. (2011) Process for the recovery of cobalt oxalate from spent lithium-ion batteries. Hydrometallurgy, 108(1-2): 80-86
Contestabile, M., Panero, S., Scrosati, B. (2001) A laboratory-scale lithium-ion battery recycling process. Journal of Power Sources, 92(1-2): 65-69
Dorella, G., Mansur, M.B. (2007) A study of the separation of cobalt from spent Li-ion battery residues. Journal of Power Sources, 170(1): 210-215
Ferreira, D.A., Prados, L.M.Z., Majuste, D., Mansur, M.B. (2009) Hydrometallurgical separation of aluminium, cobalt, copper and lithium from spent Li-ion batteries. Journal of Power Sources, 187(1): 238-246
Ferron, J.C. (2008) Sulfur dioxide: A versatile reagent for the processing of cobaltic oxide minerals. JOM, 60(10): 50-54
Huang, H.H. (2008) Stabcal software. Montana: Department of Materials and Metallurgical Engineering
Kang, J., Senanayake, G., Sohn, J., Shin, S.M. (2010) Recovery of cobalt sulfate from spent lithium ion batteries by reductive leaching and solvent extraction with Cyanex 272. Hydrometallurgy, 100(3-4): 168-171
Lee, C.K., Rhee, K. (2003) Reductive leaching of cathodic active materials from lithium ion battery wastes. Hydrometallurgy, 68(1-3): 5-10
Li, L., Ge, J., Wu, F., Chen, R., Chen, S., Wu, B. (2010) Recovery of cobalt and lithium from spent lithium ion batteries using organic citric acid as leachant. Journal of Hazardous Materials, 176(1-3): 288-293
Mantuano, D.P., Dorella, G., Elias, R.C.A., Mansur, M.B. (2006) Analysis of a hydrometallurgical route to recover base metals from spent rechargeable batteries by liquid-liquid extraction with Cyanex 272. Journal of Power Sources, 159(2): 1510-1518
Minić, D., Petković, D., Štrbac, N., Mihajlović, I., Živković, Ž.D. (2004) Kinetic investigations of oxidative roasting and afterwards leaching of copper-lead matte. Journal of Mining and Metallurgy B: Metallurgy, vol. 40, br. 1, str. 57-73
Mohapatra, M., Anand, S., Das, R.P. (2001) Behaviour of Co(II) in solutions obtained by dissolution of cobalto-cobaltic oxide in NH3-SO2-H2O medium. Hydrometallurgy, 61(3): 169-175
Mulaba-Bafubiandi, A.F., Bell, D.T. (2005) Some aspects of laboratory flotation of Cu-Co minerals from mixed oxide ores. u: Third South African Conference on Base Metals, Proc, SA Inst. Min. Metall, 191-200
Mwema, M.D., Mpoyo, M., Kafumbila, K. (2002) Journal of the South African Inst of Mining & Metallurgy, Jan-; Feb; 1-4
Roskill Information Services (2007) The economics of cobalt. 11th edition
Safarzadeh, M.S., Dhawan, N., Birinci, M., Moradkhani, D. (2011) Reductive leaching of cobalt from zinc plant purification residues. Hydrometallurgy, 106(1-2): 51-57
Shin, S.M., Kim, N.H., Sohn, J.S., Yang, D.H., Kim, Y.H. (2005) Development of a metal recovery process from Li-ion battery wastes. Hydrometallurgy, 79(3-4): 172-181
Smith, A.J., Garciano, L.O., Tran, T., Wainwright, M.S. (2008) Structure and Kinetics of Leaching for the Formation of Skeletal (Raney) Cobalt Catalysts. Industrial & Engineering Chemistry Research, 47(5): 1409-1415
Sohn, H.Y., Wadsworth, M.E. (1979) Rate processes of extractive metallurgy. New York: Plenum Press, Chapter 3, 133-244
Zhang, Y., Liu, Q., Sun, C. (2001) Sulfuric acid leaching of ocean manganese nodules using phenols as reducing agents. Minerals Engineering, 14(5): 525-537
Zhang, Y., Liu, Q., Sun, C. (2001) Sulfuric acid leaching of ocean manganese nodules using aromatic amines as reducing agents. Minerals Engineering, 14(5): 539-542
 

O članku

jezik rada: engleski
vrsta rada: neklasifikovan
DOI: 10.2298/JMMB120103035S
objavljen u SCIndeksu: 30.07.2013.