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WO2012002665A3 - Method for removing impurities from mg-si using acid leaching for producing silicon for solar batteries - Google Patents

Method for removing impurities from mg-si using acid leaching for producing silicon for solar batteries Download PDF

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Publication number
WO2012002665A3
WO2012002665A3 PCT/KR2011/004517 KR2011004517W WO2012002665A3 WO 2012002665 A3 WO2012002665 A3 WO 2012002665A3 KR 2011004517 W KR2011004517 W KR 2011004517W WO 2012002665 A3 WO2012002665 A3 WO 2012002665A3
Authority
WO
WIPO (PCT)
Prior art keywords
vessel
removing impurities
acid
silicon
acid leaching
Prior art date
Application number
PCT/KR2011/004517
Other languages
French (fr)
Korean (ko)
Other versions
WO2012002665A2 (en
Inventor
민동준
정은진
Original Assignee
연세대학교 산학협력단
㈜리뉴에너지
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 연세대학교 산학협력단, ㈜리뉴에너지 filed Critical 연세대학교 산학협력단
Publication of WO2012002665A2 publication Critical patent/WO2012002665A2/en
Publication of WO2012002665A3 publication Critical patent/WO2012002665A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/02—Silicon
    • C01B33/037—Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)

Abstract

The present invention relates to a method for removing impurities from MG-Si using acid leaching for producing silicon for solar batteries. The present invention relates to a method for removing impurities from MG-Si using an acid leaching process, comprising the following processes: preparing a vessel selected from among a Pyrex beaker, a carbon vessel, an Al2O3 vessel, a Teflon vessel and an MgO vessel having high abrasion resistance to an acid solution; providing the prepared vessel with one or more acid solutions selected from HCl, HNO3, H2SO4, and HF which does not corrode MG-Si silicon; providing, to the inside of the vessel in which the acid solutions are provided, MG-Si such that the weight ratio of the silicon and acid solutions satisfies the ratio of 1:0.5 to 2; and keeping the MG-Si in the vessel at a preset temperature for a preset period of time, thereby removing impurities at an ion state from Si, wherein the impurities result from the interfacial reaction between the acid solutions and Si.
PCT/KR2011/004517 2010-07-01 2011-06-21 Method for removing impurities from mg-si using acid leaching for producing silicon for solar batteries WO2012002665A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20100063299A KR101180353B1 (en) 2010-07-01 2010-07-01 Refining method of Phosphorus and other impurities from MG-Si by acid leaching
KR10-2010-0063299 2010-07-01

Publications (2)

Publication Number Publication Date
WO2012002665A2 WO2012002665A2 (en) 2012-01-05
WO2012002665A3 true WO2012002665A3 (en) 2012-05-03

Family

ID=45402521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/004517 WO2012002665A2 (en) 2010-07-01 2011-06-21 Method for removing impurities from mg-si using acid leaching for producing silicon for solar batteries

Country Status (2)

Country Link
KR (1) KR101180353B1 (en)
WO (1) WO2012002665A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102502651A (en) * 2011-10-26 2012-06-20 昆明理工大学 Wet method for removing P from industrial silicon
CN107572533A (en) * 2017-09-07 2018-01-12 晶科能源有限公司 The minimizing technology of impurity in a kind of silicon material flaw-piece
CN108240933B (en) * 2017-12-11 2021-10-22 囯网河北省电力有限公司电力科学研究院 Ultra-pure aluminum microstructure morphology etching agent and etching method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379777A (en) * 1980-10-15 1983-04-12 Universite De Sherbrooke Purification of metallurgical grade silicon
US4539194A (en) * 1983-02-07 1985-09-03 Elkem A/S Method for production of pure silicon
US6090361A (en) * 1997-03-24 2000-07-18 Kawasaki Steel Corporation Method for producing silicon for use in solar cells
WO2005063621A1 (en) * 2003-12-29 2005-07-14 Elkem Asa Silicon feedstock for solar cells
KR20090113091A (en) * 2008-04-25 2009-10-29 주식회사 이노베이션실리콘 Method of Refining Silicon By Compression

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10324514A (en) * 1997-03-25 1998-12-08 Kawasaki Steel Corp Method for reutilizing metallic silicon

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379777A (en) * 1980-10-15 1983-04-12 Universite De Sherbrooke Purification of metallurgical grade silicon
US4539194A (en) * 1983-02-07 1985-09-03 Elkem A/S Method for production of pure silicon
US6090361A (en) * 1997-03-24 2000-07-18 Kawasaki Steel Corporation Method for producing silicon for use in solar cells
WO2005063621A1 (en) * 2003-12-29 2005-07-14 Elkem Asa Silicon feedstock for solar cells
KR20090113091A (en) * 2008-04-25 2009-10-29 주식회사 이노베이션실리콘 Method of Refining Silicon By Compression

Also Published As

Publication number Publication date
KR101180353B1 (en) 2012-09-06
KR20120002677A (en) 2012-01-09
WO2012002665A2 (en) 2012-01-05

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