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Volume 25 Issue 12
Dec.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(12): 1439-1446
Rowaid Al-khazraji, Ya-qiong Li,  and Li-feng Zhang, Boron separation from Si-Sn alloy by slag treatment, Int. J. Miner. Metall. Mater., 25(2018), No. 12, pp. 1439-1446. https://doi.org/10.1007/s12613-018-1698-0
Cite this article as:
Rowaid Al-khazraji, Ya-qiong Li,  and Li-feng Zhang, Boron separation from Si-Sn alloy by slag treatment, Int. J. Miner. Metall. Mater., 25(2018), No. 12, pp. 1439-1446. https://doi.org/10.1007/s12613-018-1698-0
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研究论文

Boron separation from Si-Sn alloy by slag treatment

  • School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

  • Beijing Key Laboratory of Green Recycling and Extraction of Metal, University of Science & Technology Beijing, Beijing 100083, China

  • 通讯作者:

    Ya-qiong Li    E-mail: liyq_ustb@163.com

  • This study investigates a purification process for metallurgical-grade silicon (MG-Si) in which Si is alloyed with tin (Sn) and CaO-SiO2-CaCl2 slag is used to remove boron (B) impurity. Acid leaching was performed to remove the Sn phase after slag refining to recover high-purity Si from the Si-Sn alloy. The effect of refining time was investigated, and acceptable refining results were realized within 15 min. The effects of slag composition and Sn content on the removal of B were also studied. The results indicate that increasing Sn content favors B removal. With the increase of Sn to 50% of the alloy, the final B content decreased to 1.1×10-4wt%, 93.9% removal efficiency.
    • Research Article

    Boron separation from Si-Sn alloy by slag treatment

    + Author Affiliations
      Abstract
    • This study investigates a purification process for metallurgical-grade silicon (MG-Si) in which Si is alloyed with tin (Sn) and CaO-SiO2-CaCl2 slag is used to remove boron (B) impurity. Acid leaching was performed to remove the Sn phase after slag refining to recover high-purity Si from the Si-Sn alloy. The effect of refining time was investigated, and acceptable refining results were realized within 15 min. The effects of slag composition and Sn content on the removal of B were also studied. The results indicate that increasing Sn content favors B removal. With the increase of Sn to 50% of the alloy, the final B content decreased to 1.1×10-4wt%, 93.9% removal efficiency.
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