SE8003840L - PROCEDURE FOR PURIFICATION OF SILICONE - Google Patents

PROCEDURE FOR PURIFICATION OF SILICONE

Info

Publication number
SE8003840L
SE8003840L SE8003840A SE8003840A SE8003840L SE 8003840 L SE8003840 L SE 8003840L SE 8003840 A SE8003840 A SE 8003840A SE 8003840 A SE8003840 A SE 8003840A SE 8003840 L SE8003840 L SE 8003840L
Authority
SE
Sweden
Prior art keywords
solid phase
crystals
fraction
separated
silicone
Prior art date
Application number
SE8003840A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE448164B (en
Inventor
R K Dawless
Original Assignee
Aluminum Co Of America
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
Priority claimed from US06/041,892 external-priority patent/US4256717A/en
Priority claimed from US06/042,016 external-priority patent/US4246249A/en
Application filed by Aluminum Co Of America filed Critical Aluminum Co Of America
Publication of SE8003840L publication Critical patent/SE8003840L/en
Publication of SE448164B publication Critical patent/SE448164B/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)
  • Manufacture And Refinement Of Metals (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Abstract

A method for purifying silicon comprises extracting heat from an impure silicon in a metal solvent to provide a solid phase containing silicon in crystal form and to concentrate impurities in a molten phase. After a desired amount of heat has been extracted, a substantial part of the molten phase is separated from the solid phase. A fraction or portion of the solid phase is remelted for purposes of removing solvent metal, including impurities, from the crystals, end et least one fraction of the remelted material is separated from the crystals.
SE8003840A 1979-05-24 1980-05-22 PROCEDURE FOR PROVIDING A BED OF PURE SILICONE CRYSTALS SE448164B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US4201779A 1979-05-24 1979-05-24
US06/041,892 US4256717A (en) 1979-05-24 1979-05-24 Silicon purification method
US06/042,016 US4246249A (en) 1979-05-24 1979-05-24 Silicon purification process

Publications (2)

Publication Number Publication Date
SE8003840L true SE8003840L (en) 1980-11-25
SE448164B SE448164B (en) 1987-01-26

Family

ID=27366012

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8003840A SE448164B (en) 1979-05-24 1980-05-22 PROCEDURE FOR PROVIDING A BED OF PURE SILICONE CRYSTALS

Country Status (8)

Country Link
AU (1) AU531384B2 (en)
BR (1) BR8003247A (en)
DE (1) DE3019875C2 (en)
FR (1) FR2457254A1 (en)
GB (1) GB2052461B (en)
MX (1) MX154222A (en)
NO (1) NO153846C (en)
SE (1) SE448164B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150539A1 (en) * 1981-12-21 1983-06-30 Siemens AG, 1000 Berlin und 8000 München Process for producing silicon which can be used for semiconductor components, in particular for solar cells
UA97691C2 (en) * 2007-09-13 2012-03-12 Силисиум Беканкур Инк. Process for preparation of high purity solid polycrystalline silicon
CN101855391B (en) * 2007-10-03 2014-10-29 希里科材料公司 Method for processing silicon powder to obtain silicon crystals
NO329987B1 (en) 2009-02-26 2011-01-31 Harsharn Tathgar Semi-Continuous Process for Formation, Separation and Melting of Large, Clean Silicon Crystals

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471899A (en) * 1940-07-08 1949-05-31 Spolek Method of separating constituents of alloys by fractional crystallization

Also Published As

Publication number Publication date
BR8003247A (en) 1980-12-30
NO801559L (en) 1980-11-25
FR2457254B1 (en) 1981-12-04
NO153846C (en) 1986-06-04
SE448164B (en) 1987-01-26
AU531384B2 (en) 1983-08-18
MX154222A (en) 1987-06-19
GB2052461A (en) 1981-01-28
FR2457254A1 (en) 1980-12-19
DE3019875C2 (en) 1986-01-02
NO153846B (en) 1986-02-24
AU5876880A (en) 1980-11-27
GB2052461B (en) 1983-04-07
DE3019875A1 (en) 1980-11-27

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