Removal of Water-Soluble Manganese Ions from Electrolytic Manganese Residues by Hydrometallurgical Process

Abstract:

Electrolytic manganese residues containing a substantial amount of manganese are a potential pollution. Removing water-soluble manganese ions from electrolytic manganese residues by hydrometallurgical process was discussed. In the work, the basic property of the electrolytic manganese residues was analyzed. Based on it, we proposed the suitable method to remove Mn²⁺ from the slag by pollution-free oxidation in alkaline solution. The results shown that the best conditions to remove Mn²⁺ were pH 10.5, temperature 55 °C, the flow rate of hydrogen peroxide 0.50 mL·L^-1·min^-1 and agitation speed 250 r/min. At the optimum condition, the removal ratio of water-soluble Mn²⁺ exceeded 99.9% and the concentration of Mn²⁺ in the final solutions was about 3 mg/L.

• Periodical: Applied Mechanics and Materials (Volumes 448-453)
• Pages: 752-755
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.448-453.752
• Online since: October 2013
• Authors: Xue Jiao Zhou, Wen Tang Xia, Jian Guo Yin, Yi Feng Gao, Wen Qiang Yang, Juan An
• Keywords: Electrolytic Manganese Residues, Hydrometallurgical Process, Removal Ratio, Water-Soluble Manganese Ions

References

[1] A.M. Silva, F.L.S. Cruz, R.M.F. Lima, M.C. Teixeira, V.A. Leão: J. Hazard. Mater. Vol. 181 (2010), p.514.

[2] M.S. Burger, S.S. Mercer, G.D. Shupe, G.A. Gagnon: Water Res. Vol. 42 (2008), p.4733.

[3] K.B. Hallberg and D.B. Johnson: Sci. Total Environ. Vol. 338 (2005), p.115.

[4] W. S Zhang and C.Y. Cheng: Hydrometallurgy Vol. 89 (2007), p.160.

[5] A.M. Silva, E.C. Cunha, F.D.R. Silva, V.A. Leão: J. Clean. Prod. Vol. 29-30 (2012), p.11.