GB1080589A - Method of producing silicon and electrolytic cell therefor - Google Patents

Method of producing silicon and electrolytic cell therefor

Info

Publication number
GB1080589A
GB1080589A GB46385/65A GB4638565A GB1080589A GB 1080589 A GB1080589 A GB 1080589A GB 46385/65 A GB46385/65 A GB 46385/65A GB 4638565 A GB4638565 A GB 4638565A GB 1080589 A GB1080589 A GB 1080589A
Authority
GB
United Kingdom
Prior art keywords
silica
electrolyte
silicon
cryolite
electrolytic cell
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.)
Expired
Application number
GB46385/65A
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.)
General Trustee Co Inc
Original Assignee
General Trustee Co Inc
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 General Trustee Co Inc filed Critical General Trustee Co Inc
Publication of GB1080589A publication Critical patent/GB1080589A/en
Expired 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/33—Silicon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof

Abstract

Silicon is produced from an electrolyte of silica dissolved in cryolite in an electrolytic cell the internal wall of which is composed of finely divided silica e.g. sand. The electrolyte, preferably kept at a temperature between 970 and 1400 DEG C. by passing A.C. therethrough between a pair of electrodes immersed therein, may separate into an upper phase containing 3-10% silica and a lower phase containing up to 80% silica, the silica being introduced into the electrolyte as silicon is electro-deposited. The cell may comprise a container of steel or silica brick with a body of finely divided pure sand lining the inside, initially rammed therein and filled with solid cryolite with or without silica which is melted to produce the electrolyte. The main electrodes are preferably of graphite. Prior art cells using molten cryolite are referred to as being lined with graphite, boron nitride or silicon carbide bonded with silicon nitride.
GB46385/65A 1965-06-15 1965-11-02 Method of producing silicon and electrolytic cell therefor Expired GB1080589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH828765A CH426279A (en) 1965-06-15 1965-06-15 Electrolytic cell for the manufacture of silicon

Publications (1)

Publication Number Publication Date
GB1080589A true GB1080589A (en) 1967-08-23

Family

ID=4338002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46385/65A Expired GB1080589A (en) 1965-06-15 1965-11-02 Method of producing silicon and electrolytic cell therefor

Country Status (6)

Country Link
US (1) US3405043A (en)
CH (1) CH426279A (en)
FR (1) FR1461092A (en)
GB (1) GB1080589A (en)
NL (1) NL6512726A (en)
NO (1) NO116216B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142947A (en) * 1977-05-12 1979-03-06 Uri Cohen Electrodeposition of polycrystalline silicon from a molten fluoride bath and product
FR2480796A1 (en) * 1980-04-21 1981-10-23 Extramet Sarl High purity silicon deposit formation - by electrolytic deposition from alkali (ne earth) metal halide melt contg. dissolved silicon
CN103103552A (en) * 2011-11-15 2013-05-15 北京有色金属研究总院 Method for preparing silicon by molten salt electrolysis

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711386A (en) * 1969-12-04 1973-01-16 Us Interior Recovery of metals by electrodeposition
US3779699A (en) * 1973-03-15 1973-12-18 Aluminum Co Of America Furnace structure
US3983013A (en) * 1973-07-26 1976-09-28 Mark Borisovich Gutman Method of electrolytic borating of articles
US4292145A (en) * 1980-05-14 1981-09-29 The Board Of Trustees Of Leland Stanford Junior University Electrodeposition of molten silicon
GB2127799B (en) * 1982-09-24 1986-10-01 G Kenneth Rice Aqueous hydride solutions of silicon and other metals and electroplating therefor
US4569733A (en) * 1984-07-20 1986-02-11 Wedtech Corp. Method of treating rock to recover metal, oxygen, and water
US5076902A (en) * 1989-01-12 1991-12-31 Toshiba Ceramics Co., Ltd. Electrolysis apparatus
NO942121L (en) * 1994-06-07 1995-12-08 Jan Stubergh Manufacture and apparatus for producing silicon "metal", silumin and aluminum metal
NO20010963D0 (en) * 2001-02-26 2001-02-26 Norwegian Silicon Refinery As Process for the preparation of silicon and / or aluminum and silumin (aluminum-silicon alloy)
NO20010962D0 (en) * 2001-02-26 2001-02-26 Norwegian Silicon Refinery As Process for producing high purity silicon by electrolysis
AU2006245664B2 (en) * 2005-05-13 2010-10-07 Wulf Nagel Low-temperature fused-salt electrolysis of quartz

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US920893A (en) * 1903-09-12 1909-05-04 Henry Spencer Blackmore Art of extracting aluminum and other metals.
US1980378A (en) * 1932-01-16 1934-11-13 Burgess Louis Method of making beryllium and light alloys thereof
US2892763A (en) * 1957-04-12 1959-06-30 American Potash & Chem Corp Production of pure elemental silicon
NL290208A (en) * 1962-03-14

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142947A (en) * 1977-05-12 1979-03-06 Uri Cohen Electrodeposition of polycrystalline silicon from a molten fluoride bath and product
FR2480796A1 (en) * 1980-04-21 1981-10-23 Extramet Sarl High purity silicon deposit formation - by electrolytic deposition from alkali (ne earth) metal halide melt contg. dissolved silicon
CN103103552A (en) * 2011-11-15 2013-05-15 北京有色金属研究总院 Method for preparing silicon by molten salt electrolysis
CN103103552B (en) * 2011-11-15 2016-04-13 国联汽车动力电池研究院有限责任公司 A kind of method adopting fused salt electrolysis to produce silicon

Also Published As

Publication number Publication date
CH426279A (en) 1966-12-15
NO116216B (en) 1969-02-17
NL6512726A (en) 1966-12-16
US3405043A (en) 1968-10-08
FR1461092A (en) 1966-12-10

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