Preparation of High-Purity Nanometer Bismuth Trioxide from Silver-Zinc Slag

Abstract:

Silver-zinc slag, containing a lot of Bi, Ag, Cu, Zn, Pb and a little Au, has high comprehensive utilization value. This paper describes a preparation method of high-purity nanometer bismuth trioxide (Bi2O3) from silver-zinc slag by hydrometallurgical method. The results showed that Bi could be effectively leached out from silver-zinc slag using sodium chlorate, hydrochloric acid and sodium chloride as leaching agents, and the leaching rate of Bi was up to 99.03% under the optimum conditions. The contents of Pb2+ and Ag+ in BiCl3 solution could be reduced to about 1mg/L by using silver-zinc slag as reductant and sodium iodide (NaI) as precipitant, respectively. Crystalline form of Bi2O3 is affected greatly by concentration of NaOH, conversion temperature and time. The suitable temperature of BiOCl converting to Bi2O3 was 90 , and the suitable surfactant was polyvinyl alcohol. The average particle size of Bi2O3 obtained was about 86 nm, the purity of Bi2O3 was up to 99.75%, and the yield was 98.21%.

• Periodical: Advanced Materials Research (Volumes 156-157)
• Pages: 785-793
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.156-157.785
• Online since: October 2010
• Authors: Li Hua Liu, Jun Wu, Xin Li, Zhu Qing Gong
• Keywords: Bismuth Trioxide, Leaching, Silver-Zinc Slag, Two-Step Method

References

[1] Z. Q. Gong, J. S. Li, Y. J. Zheng, W. X. Yang: Journal of Central South University of Technology Vol. 34 (2003), p.506 ( In Chinese ).

[2] C. W. Li: Non-ferrous Smelting Vol. 27 (1998), p.9 ( In Chinese ).

[3] Z. Q. Xia, G. Zhang: Conservation and Utilization of Mineral Resources Vol. 20 (2000), p.43 ( In Chinese ).

[4] Y. Z. Zhao, J. C. Zhu, Q. J. Li, J. Y. Zhou: Journal of Guangdong Non-ferrous Metals Vol. 5 (1995), p.126 ( In Chinese ).

[5] M. T. Tang, J. L. Lu: Journal of Central South University of Technology Vol. 26 (1995), p.186 ( In Chinese ).

[6] Z. Kelly, and F. Ojebuoboh: JOM Vol. 54 (2002), p.42.

[7] F. K. Ojebuoboh: JOM Vol. 44 (1992), p.46.

[8] L. Armelao, P. Colombo, and M. Fabrizio: Journal of Sol-Gel Science and Technology Vol. 13 (1998), p.213.

[9] G. Bandoli, D. Barreca, E. Brescacin, G.A. Rizzi and E. Tondello: Chem. Vap. Deposition Vol. 2 (1996), p.238.

DOI: 10.1002/cvde.19960020605

[10] P. Sulcova and M. Trojan: J. Therm. Anal. Vol. 60 (2000), p.209.

[11] P. Suk, H. D. Wiemhofer, U. Guth, W. Gopel and M. Greenblatt: Solid State Ionics Vol. 89 (1996), p.179.

[12] O. Monnereau, L. Tortet, P. Llewellyn, F. Rouquerol and G. Vacquier: Solid State Ionics Vol. 157 (2003), p.163.

[13] J. Krüger, P. Winkler, E. Lüderitz, M. Lück and H. U. Wolf, in: Bismuth, Bismuth Alloys, and Bismuth Compounds", in Ullmann, s Encyclopedia of Industrial Chemistry. Wiley–VCH Verlag GmbH, Weinheim, (2000).

DOI: 10.1002/14356007.a04_171

[14] J. A. Switzer, M. G. Shumsky and E. W. Bohannan: Science Vol. 284 (1999), p.293.

[15] V. K. Larin, V. M. Kondakov, E. N. Malyi: Izvestiya Vysshi Uehebnykh Zavedenii, Tsvetnaya Metallurgiya Vol. 5 (2003), p.59.

[16] L. Mädler and S. E. Pratsinis: J. Am. Ceram. Soc. Vol. 85 (2002), p.1713.

[17] E. S. M. Samy and S. T. Li: Proc SPIE-Int Soc Opt Eng [C] Vol. 3123 (1997), p.98.

[18] H. O. Jungk and C. Feldmann: J Matel Sci Vol. 36 (2001), p.297.

[19] J. C. Yu, A.W. Xu, L. Z. Zhang, R. Q. Song and L. Wu: J. Phys. Chem. B Vol. 108 (2004), p.64.

[20] J. C. Zhu, Y. Z. Zhao, Q. J. Li and J. Y. Zhou: Journal of Guangdong Non-ferrous Metals Vol. 5 (1995), p.50 ( In Chinese ).