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Vol. 27 No. 8 (2015): Vol 27 Issue 8

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Study on Enhancing Zinc Dusts with Direct Sulphuric Acid Leaching

https://doi.org/10.14233/ajchem.2015.18058
H.Y. Sun
College of Science, Honghe University, Mengzi 661100, P.R. China
X. Kong
College of Science, Honghe University, Mengzi 661100, P.R. China
W. Sen
Yunnan Tin Group (Holding) Company Limited, Gejiu 661000, P.R. China
G.Y. Liu
College of Science, Honghe University, Mengzi 661100, P.R. China

Corresponding Author(s) : G.Y. Liu

alios@126.com, sunhongyan0404@126.com

Asian Journal of Chemistry, Vol. 27 No. 8 (2015): Vol 27 Issue 8

Abstract

The mechanical activation of zinc dusts to enhance leaching of zinc and lead going into leaching residue with direct sulphuric acid leaching have been performed in the paper. Some technical parameters were mainly investigated and optimized, including concentration of initial acid, liquid-solid ratio, leaching time and leaching temperature. The SEM measurement and DTA-TG analysis were conducted to check the change of microstructure and thermodynamics stability of zinc dusts before and after mechanical activation for 0.5 h. It was found that before mechanical activation the optimum technical conditions were concentration of H2SO4 175 g/L, liquid-solid ratio 7:1, leaching temperature 80 °C, leaching time 60 min and leaching rate of zinc was 92.47 % and rate of lead going into leaching residue was 90.83 %. After 0.5 h milling, the optimum technical parameters were concentration of H2SO4 150 g/L, liquid-solid ratio 5:1, leaching temperature 50 °C, the leaching time 40 min and leaching rate of zinc was 91.52 % and rate of lead going into leaching residue was 95.36 %.

Keywords

Zinc dusts Leaching rate Mechanical activation Lattice distortion
Sun, H., Kong, X., Sen, W., & Liu, G. (2015). Study on Enhancing Zinc Dusts with Direct Sulphuric Acid Leaching. Asian Journal of Chemistry, 27(8), 2801–2805. https://doi.org/10.14233/ajchem.2015.18058
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References
  1. T. Okada, Y. Tojo, N. Tanaka and T. Matsuto, Waste Manage., 27, 69 (2007); doi:10.1016/j.wasman.2005.12.006.
  2. M.D. Turan, H.S. Altundogan and F. Tümen, Hydrometallurgy, 75, 169 (2004); doi:10.1016/j.hydromet.2004.07.008.
  3. C.A. Pickles, Sep. Purif. Technol., 59, 115 (2008); doi:10.1016/j.seppur.2007.05.032.
  4. C.X. Guo and Y.C. Zhao, Environ. Protect. Chem. Ind., 28, 77 (2008).
  5. C.X. Guo, C.L. Zhang, Q. Liu and Y.C. Zhao, Environ. Pollut. Control, 29, 697 (2007).
  6. M.H. Morcali, O. Yucel, A. Aydin and B. Derin, J. Mining Metall., 48, 173 (2012); doi:10.2298/JMMB111219031M.
  7. A.M. Amer, Hydrometallurgy, 38, 225 (1995); doi:10.1016/0304-386X(94)00063-9.
  8. P. Pourghahramani, E. Altin, M.R. Mallembakam, W. Peukert and E. Forssberg, Powder Technol., 186, 9 (2008); doi:10.1016/j.powtec.2007.10.027.
  9. T.C. Yuan, Q.Y. Cao and J. Li, Hydrometallurgy, 104, 136 (2010); doi:10.1016/j.hydromet.2010.05.008.
  10. Y.J. Zhang, X.H. Li, L.P. Pan and Y.S. Wei, Chinese J. Nonferr. Metals, 22, 315 (2012).
  11. Q.Y. Cao, J. Li, Q.Y. Chen and W. Xia, Chinese J. Process Eng., 9, 669 (2009).
  12. C. Li, S.P. Chen, Z.B. Wu and B. Liang, J. Chem. Ind. Eng., 57, 832 (2006).
  13. Z.Q. Huang, X.H. Li and L.P. Fan, Multipurp. Utilizat. Miner. Res., 3, 25 (2002).
  14. P. Tan, H.P. Hu and L. Zhang, Transac. Nonferr. Met. Soc. China, 21, 1414 (2011); doi:10.1016/S1003-6326(11)60875-3.
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