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WO2008115072A3 - Electrolyte and method for electrochemical refining of silicon - Google Patents

Electrolyte and method for electrochemical refining of silicon Download PDF

Info

Publication number
WO2008115072A3
WO2008115072A3 PCT/NO2008/000105 NO2008000105W WO2008115072A3 WO 2008115072 A3 WO2008115072 A3 WO 2008115072A3 NO 2008000105 W NO2008000105 W NO 2008000105W WO 2008115072 A3 WO2008115072 A3 WO 2008115072A3
Authority
WO
WIPO (PCT)
Prior art keywords
silicon
electrolyte
electrochemical
refining
electrochemical refining
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/NO2008/000105
Other languages
French (fr)
Other versions
WO2008115072A2 (en
Inventor
Espen Olsen
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.)
Sinvent AS
Original Assignee
Sinvent AS
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 Sinvent AS filed Critical Sinvent AS
Publication of WO2008115072A2 publication Critical patent/WO2008115072A2/en
Publication of WO2008115072A3 publication Critical patent/WO2008115072A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/34—Electrolytic production, recovery or refining of metals by electrolysis of melts of metals not provided for in groups C25C3/02 - C25C3/32
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/005—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells of cells for the electrolysis of melts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

The invention discloses an electrolyte for electrochemical refining of a material containing silicon at a temperature above the melting point of silicon in a three layer electrochemical cell. The electrolyte comprises 50-100% by weight of at least one alkaline earth metal fluoride selected from BaF2, CaF2, SrF2 and MgF2. The invention also comprises the method and the electrochemical cell involved in the electrochemical refining of silicon.
PCT/NO2008/000105 2007-03-21 2008-03-17 Electrolyte and method for electrochemical refining of silicon Ceased WO2008115072A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NO20071496 2007-03-21
NO20071496A NO328263B1 (en) 2007-03-21 2007-03-21 Electrolyte and method for electrochemical refining of silicon
US92430407P 2007-05-08 2007-05-08
US60/924,304 2007-05-08

Publications (2)

Publication Number Publication Date
WO2008115072A2 WO2008115072A2 (en) 2008-09-25
WO2008115072A3 true WO2008115072A3 (en) 2008-11-13

Family

ID=39766605

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2008/000105 Ceased WO2008115072A2 (en) 2007-03-21 2008-03-17 Electrolyte and method for electrochemical refining of silicon

Country Status (2)

Country Link
NO (1) NO328263B1 (en)
WO (1) WO2008115072A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102449201A (en) 2009-05-26 2012-05-09 住友化学株式会社 Processes for the manufacture of refined metals or metalloids
RU2399698C1 (en) * 2009-11-16 2010-09-20 Учреждение Российской академии наук Институт высокотемпературной электрохимии Уральского отделения РАН Procedure for production of silicon of nano or micro-wave structure
CN115305508B (en) * 2021-05-08 2025-11-21 郑州大学 Method for producing metal aluminum and polysilicon by using high-silicon aluminum-containing resource
DE102024110524A1 (en) * 2024-04-15 2025-10-16 Rheinisch-Westfälische Technische Hochschule Aachen, abgekürzt RWTH Aachen, Körperschaft des öffentlichen Rechts Process for treating silicon-containing solid bodies

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292145A (en) * 1980-05-14 1981-09-29 The Board Of Trustees Of Leland Stanford Junior University Electrodeposition of molten silicon
US4448651A (en) * 1982-06-10 1984-05-15 The United States Of America As Represented By The United States Department Of Energy Process for producing silicon
NO156172B (en) * 1984-02-13 1987-04-27 Ila Lilleby Smelteverker PROCEDURE FOR THE PREPARATION OF PURIFIED SILICONE BY ELECTROLYTIC REFINING.
WO2002077325A1 (en) * 2001-02-26 2002-10-03 Norwegian Silicon Refinery As Process for preparing silicon and optionally aluminum and silumin(aluminum-silicon alloy)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292145A (en) * 1980-05-14 1981-09-29 The Board Of Trustees Of Leland Stanford Junior University Electrodeposition of molten silicon
US4448651A (en) * 1982-06-10 1984-05-15 The United States Of America As Represented By The United States Department Of Energy Process for producing silicon
NO156172B (en) * 1984-02-13 1987-04-27 Ila Lilleby Smelteverker PROCEDURE FOR THE PREPARATION OF PURIFIED SILICONE BY ELECTROLYTIC REFINING.
WO2002077325A1 (en) * 2001-02-26 2002-10-03 Norwegian Silicon Refinery As Process for preparing silicon and optionally aluminum and silumin(aluminum-silicon alloy)

Also Published As

Publication number Publication date
WO2008115072A2 (en) 2008-09-25
NO20071496L (en) 2008-09-22
NO328263B1 (en) 2010-01-18

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