Removal of Fe, B and P impurities by enhanced separation technique from silicon-rich powder of the multi-wire sawing slurry
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- 作者：Suning Liu ; Kai Huang ; khuang@metall.ustb.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Hongmin Zhu
- 关键词：Wiresawing slurry ; Silicon-rich powder ; Pre-dispersion ; Magnetic separation ; Microwave acid leaching
- 刊名：Chemical Engineering Journal
- 出版年：2016
- 出版时间：1 September 2016
- 年：2016
- 卷：299
- 期：Complete
- 页码：276-281
- 全文大小：1513 K
文摘
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The aggregates were dispersed by surface potential tuning and microwave treatment.
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The iron of the Si-rich powder can be effectively removed by magnetic field.
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B and P can be reduced to the requirements of solar grade polysilicon.
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The whole process is effectively, simple and easy to industrialization.