Correlations between Milling Conditions and B₂O₃ Activity of Mechanically Activated Boron Concentrate

Abstract:

Facing the current inefficiency of boron extraction from boron concentrate, this paper used mechanical activation as a pretreatment method to improve the extraction of B₂O₃ from boron concentrate, and researched the influences of milling conditions, including the ball-sample mass ratio, the diameter of milling ball, and filling ratio of chamber, on the B₂O₃ activity. The changes in the properties of the milled products were investigated to analyze the mechanism of activation. These three milling conditions all affected the B₂O₃ activity more or less, as evidenced by the changes of B₂O₃ activity with these milling factors. Under optimized milling conditions, the B₂O₃ activity could be enhanced from 67.52% of the non-activated boron concentrate to 85.01%. The results also showed that the specific surface area increased and the crystal structure was damaged, which accelerated the reaction between the alkaline leaching solution and boron concentrate samples and enhanced the B₂O₃ activity of the samples.

• Periodical: Solid State Phenomena (Volume 294)
• Pages: 79-85
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.294.79
• Online since: July 2019
• Authors: Ying Zhe Xu, Tao Jiang*, Hui Yang Gao, Xiang Xin Xue
• Keywords: Boron Concentrate, Crystal Structure, Mechanical Activation, Surface Area

References

[1] X.J. Zheng, Borax, boric acid and boron fertilizer production technology, Chemical Industry Press, Beijing, (2013).

[2] L. Zhu, Study on preparation of borax through calcining with Boron Concentrate and Sodium, Northeastern University, (2012).

[3] T. Jiang, Q.Y. Zhang, Y.J. Liu, X.X. Xue, P.N. Duan, Influence of microwave irradiation on boron concentrate activation with an emphasis on surface properties, Appl. Surf. Sci. 385 (11) (2016) 88-98.

DOI: 10.1016/j.apsusc.2016.05.088

[4] Y.Z. Xu, T. Jiang, H.Y. Gao, W.Y. Chen, X.X. Xue, The changes of surface properties and enhancement of B2O3 leaching ratio of boron concentrate via wet ball milling, Powder Technol. 326 (2018) 89-100.

DOI: 10.1016/j.powtec.2017.12.056

[5] R.J. Ma, Principle on hydrometallurgy, Metallurgical Industry Press, Beijing, (2007).

[6] T.C. Alex, R. Kumar, S.K. Roy, S.P. Mehrotra, Towards ambient pressure leaching of boehmite through mechanical activation, Hydrometallurgy 144-145 (2014) 99-105.

DOI: 10.1016/j.hydromet.2014.01.017

[7] J. Ficeriová, P. Baláž, E. Boldižárová, S. Jeleň, Thiosulfate leaching of gold from a mechanically activated CuPbZn concentrate, Hydrometallurgy 67 (2002) 37-43.

DOI: 10.1016/s0304-386x(02)00135-4

[8] P. Baláž, Mechanochemistry in nanoscience and minerals engineering, Springer-Verlag, Berlin Heidelber, (2008).

[9] C. Suryanarayana, Mechanical alloying and milling, Prog. Mater. Sci. 46 (2001) 1-184.

[10] Y.Z. Xu, T. Jiang, M. Zhou, J. Wen, W.Y. Chen, X.X. Xue, Effects of mechanical activation on physicochemical properties and alkaline leaching of boron concentrate, Hydrometallurgy 173 (2017) 32-42.

DOI: 10.1016/j.hydromet.2017.05.014

[11] S. Vafaeian, M. Ahmadian, B. Rezaei, Sulphuric acid leaching of mechanically activated copper sulphidic concentrate, Miner. Eng. 24 (2011) 1713-1716.

DOI: 10.1016/j.mineng.2011.09.010

[12] M.H. Yang, Material mechanochemistry, Science Press, Beijing, (2010).

[13] E. Pretsch, P. Biihlmann, M. Badertscher, Structure determination of organic compounds: Tables of spectral data, fourth ed. Science Press, Beijing, (2012).

[14] Z.D. Liao, Z.Q. Huang, H.Y. Hu, Y.J. Zhang, Y.F. Tan, Microscopic structure and properties changes of cassava stillage residue pretreated by mechanical activation, Bioresour. Technol. 102 (2011) 7953-7958.

DOI: 10.1016/j.biortech.2011.05.067