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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
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2011/004517
Other languages
French (fr)
Korean (ko)
Other versions
WO2012002665A2 (en
Inventor
민동준
정은진
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RENEW ENERGY CO Ltd
Industry Academic Cooperation Foundation of Yonsei University
Original Assignee
RENEW ENERGY CO Ltd
Industry Academic Cooperation Foundation of Yonsei University
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 RENEW ENERGY CO Ltd, Industry Academic Cooperation Foundation of Yonsei University filed Critical RENEW ENERGY CO Ltd
Publication of WO2012002665A2 publication Critical patent/WO2012002665A2/en
Publication of WO2012002665A3 publication Critical patent/WO2012002665A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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 Ceased WO2012002665A2 (en)

Applications Claiming Priority (2)

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

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 Ceased 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 A kind of ultra-pure aluminum microstructure morphological etchant 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 Silicon Purification Method Using Crimping

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 How to reuse metal 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 Silicon Purification Method Using Crimping

Also Published As

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

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