Title:
METHOD FOR PRODUCING METAL ALUMINUM AND POLYSILICON BY USING HIGH SILICON ALUMINUM-CONTAINING RESOURCE
Document Type and Number:
WIPO Patent Application WO/2022/237490
Kind Code:
A1
Abstract:
The present application belongs to the technical field of aluminum metallurgy, and specifically relates to a method for producing metal aluminum and polysilicon by using a high silicon aluminum-containing resource. Firstly, a high silicon aluminum-containing resource raw material is used to obtain, by means of a pretreatment process an aluminum-silicon oxide material, then a metal aluminum product and a silicon-enriched copper-aluminum-silicon alloy are produced by means of molten salt electrolysis in a double-chamber electrolytic cell, the copper-aluminum-silicon alloy produces, in a single-chamber electrolytic cell by means of molten salt electrolysis, an aluminum-silicon alloy or/and polysilicon; and the aluminum-silicon alloy is further separated by means of a physical method to obtain polysilicon. The present application has the features of having low production costs, continuous electrolysis operations, high product quality, and being clean and environmentally-friendly, and the like.
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Inventors:
ZHAO ZHONGWEI (CN)
Application Number:
PCT/CN2022/088123
Publication Date:
November 17, 2022
Filing Date:
April 21, 2022
Export Citation:
Assignee:
UNIV ZHENGZHOU (CN)
International Classes:
C25C3/06; C25B1/33
Foreign References:
| GB891369A | 1962-03-14 | |||
| CN101454244A | 2009-06-10 | |||
| CN103243385A | 2013-08-14 | |||
| CN102534666A | 2012-07-04 |
Other References:
TIAN ZHONGLIANG, JIA MING, LAI YANGING, LI JIE, LIU YEXIANG: "Research on Direct Electrodeposition of Molten Salt and Electrolytic Refining of Silicon", SCIENCEPAPER ONLINE, 18 June 2009 (2009-06-18), XP093003456, Retrieved from the Internet [retrieved on 20221130]
YAN-QING LAI, JI-GUANG YI, ZHONG-LIANG TIAN, MING JIA, JIAN-FENG YAN, YE-XIANG LIU: "PURIFICATION OF METALLURGICAL GRADE SILICON BY ELECTROREFINING", PROCEEDINGS OF THE 10TH CHINA SOLAR PHOTOVOLTAIC CONFERENCE: MEETING THE NEW ERA OF PHOTOVOLTAIC POWER GENERATION; 2008-09-19; CHANGZHOU, JIANGSU, CHINA, 30 September 2008 (2008-09-30) - 19 September 2008 (2008-09-19), pages 31 - 35, XP009541497
YAN-QING LAI, JI-GUANG YI, ZHONG-LIANG TIAN, MING JIA, JIAN-FENG YAN, YE-XIANG LIU: "PURIFICATION OF METALLURGICAL GRADE SILICON BY ELECTROREFINING", PROCEEDINGS OF THE 10TH CHINA SOLAR PHOTOVOLTAIC CONFERENCE: MEETING THE NEW ERA OF PHOTOVOLTAIC POWER GENERATION; 2008-09-19; CHANGZHOU, JIANGSU, CHINA, 30 September 2008 (2008-09-30) - 19 September 2008 (2008-09-19), pages 31 - 35, XP009541497
Attorney, Agent or Firm:
BEIJING TIANDA INTELLECTUAL PROPERTY OFFICE (CN)
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