Hydrometallurgical Purification of Metallurgy Grade Silicon by Acid Leaching

Rui Zeng; Yun Hua Wang; Ji Xiang Zhang; Jin Quan Xu; Hai Yan Li; Xiao Fan Chen; Wei Dong Xing

doi:10.4028/www.scientific.net/AMR.549.428

Paper Titles

Experimental Study on Catalytic Oxidation of Cyclohexane Catalyzed by Phosphomolybdic Acid
p.411

COD Removal of Washing Water by Photodegradation
p.415

Studies on Preparation and Adsorption Behavior of Cd²⁺ Ions-Imprinted Polymer
p.419

Adsorption of Cd(II) and Pb(II) from Wastewater onto Porous Lignin Beads
p.423

Hydrometallurgical Purification of Metallurgy Grade Silicon by Acid Leaching
p.428

Experimental Study on Catalytic Combustion of Gasoline Vapor
p.432

Solubility Prediction for the Reciprocal Quaternary System (Li⁺, Mg²⁺//Cl^-, SO₄^2-–H₂O) at 273.15 K Using Pitzer Ion-Interaction Model
p.437

Study on Preparation Process of ITO Nano-Powder by the Method of Ammonia Complexation
p.441

Alternating Copolymerization of Carbon Dioxide with Cyclohexene Oxide Catalyzed by a Novel Catalyst
p.445

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 549Hydrometallurgical Purification of Metallurgy...

Hydrometallurgical Purification of Metallurgy Grade Silicon by Acid Leaching

Abstract:

This paper studied the purification of metallurgy grade silicon by acid leaching with different type acid and concentration. Before experiment, silicon metal had already handled by slagging process, so most boron was removed. In this paper, we grinded materials into 80-400 mesh powder, and compared the purification effect of using aqua regia, hydrochloric acid and hydrofluoric acid, respectively. With regard to the silicon metal, single acid cannot remove the impurities perfectly, but the effect of using hydrochloric acid first and following with hydrofluoric acid can be better. The removal rates of Mg, Al, Ca, Fe, and Ti were 96.8%, 96.8%, 98.2%, 99.7%, and 98.0%, respectively. Then adjust the concentration of both acid to be 14% and 7% by weight, it turned out that 14% was much better. The removal rates of Mg, Al, Ca, Fe, and Ti were 87.1%, 97.4%, 99.0%, 99.7%, and 99.1%, respectively. The results indicate that purification by multiple acids and 14% concentration could be an effective condition to remove impurities in silicon for acid leaching.

You might also be interested in these eBooks

Chemical Engineering and Material Properties II

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 549)

Pages:

428-431

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.549.428

Citation:

Cite this paper

Online since:

July 2012

Authors:

Rui Zeng, Yun Hua Wang, Ji Xiang Zhang, Jin Quan Xu, Hai Yan Li, Xiao Fan Chen, Wei Dong Xing

Keywords:

Acid Leaching, Metallurgical Method, Purification, Silicon Metal

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] G.C. Bakos. Appl. Energy, 2009, 86: 1757-66.

Google Scholar

[2] Gianluca Coletti, Paula C. P. Bronsveld, Giso Hahn, Wilhelm Warta, Daniel Macdonald, Bruno Ceccaroli, Karsten Wambach, Nam Le Quang, Juan M, Fernandez. Advanced Functional Materials, 2011, 21(5): 879-890.

DOI: 10.1002/adfm.201000849

Google Scholar

[3] I. C. Santos, A. P. Goncalves, C. S. santos. Hydrometallurgy, 2009, 23(2-3): 237-246.

Google Scholar

[4] Chu T L, Chu S S. J Electrochem Soc, 1983, 130(2): 455-461.

Google Scholar

[5] A. F. B. Braga, S.P. Moreira, P. R. Zzmpieri. Solar Energy Materials and Solar Cells, 2008, 92(4): 418-424.

Google Scholar

[6] Wang Yu, Yin Sheng, Xiao chengzhang, He Xiaoming, Wang Jingyi. Acta Energiae Solaris Sinica, 1995, 16( 2): 174-179.

Google Scholar