GB907855A - Process for the production of high purity silicon - Google Patents

Process for the production of high purity silicon

Info

Publication number
GB907855A
GB907855A GB1704960A GB1704960A GB907855A GB 907855 A GB907855 A GB 907855A GB 1704960 A GB1704960 A GB 1704960A GB 1704960 A GB1704960 A GB 1704960A GB 907855 A GB907855 A GB 907855A
Authority
GB
United Kingdom
Prior art keywords
silicon
metal
effected
molten
dissolution
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
GB1704960A
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.)
Individual
Original Assignee
Individual
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 FR794595A external-priority patent/FR1234746A/en
Application filed by Individual filed Critical Individual
Publication of GB907855A publication Critical patent/GB907855A/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

Landscapes

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

Abstract

<PICT:0907855/III/1> High-purity silicon is recovered from a solution of silicon and impurities in molten antimony, silver, bismuth, cadmium, gallium, indium, or zinc obtained by dissolving already produced silicon in the molten metal or by producing silicon in the presence of the molten metal, by distilling off the metal and the impurities under vacuum, e.g. at 1 micron of mercury. Already produced silicon may have a purity of 92-93%. Silicon may be produced by reducing a fluorosilicate of an alkali metal or an alkaline earth metal with sodium, potassium, calcium or magnesium. The reduction may be effected in the presence of a fluoride of an alkali metal or an alkaline earth metal as flux at 480 DEG -550 DEG C. Dissolution may be completed at 1200 DEG -1300 DEG C. Reduction and dissolution may be effected in a graphite crucible in an atmosphere of argon. Most of the solvent metal may be removed before the final distillation by filtration, chemical treatment, or pre-distillation. The chemical treatment may be effected with aqua regia, hydrochloric acid, or nitric acid. The final distillation may be effected in a silica crucible. Silica fragments may be removed from the product by treatment with boiling hydrofluoric acid. The product may then be washed with distilled water and alcohol and dried at 100 DEG C.
GB1704960A 1959-05-13 1960-05-13 Process for the production of high purity silicon Expired GB907855A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR794595A FR1234746A (en) 1959-05-13 1959-05-13 Very high purity silicon preparation process
FR824255A FR77520E (en) 1959-05-13 1960-04-13 Very high purity silicon preparation process

Publications (1)

Publication Number Publication Date
GB907855A true GB907855A (en) 1962-10-10

Family

ID=26184015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1704960A Expired GB907855A (en) 1959-05-13 1960-05-13 Process for the production of high purity silicon

Country Status (7)

Country Link
BE (1) BE590293A (en)
CH (1) CH421064A (en)
DE (1) DE1122501B (en)
FR (2) FR77520E (en)
GB (1) GB907855A (en)
LU (1) LU38582A1 (en)
NL (2) NL251604A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322503A (en) * 1964-05-20 1967-05-30 Bloom Harry Silicon production process
US4193975A (en) * 1977-11-21 1980-03-18 Union Carbide Corporation Process for the production of improved refined metallurgical silicon
US4193974A (en) * 1977-11-21 1980-03-18 Union Carbide Corporation Process for producing refined metallurgical silicon ribbon
US4195067A (en) * 1977-11-21 1980-03-25 Union Carbide Corporation Process for the production of refined metallurgical silicon
US4241037A (en) * 1978-11-09 1980-12-23 Montedison S.P.A. Process for purifying silicon
US4304763A (en) * 1979-08-16 1981-12-08 Consortium Fur Elektrochemische Industrie Gmbh Process for purifying metallurgical-grade silicon
US4388286A (en) * 1982-01-27 1983-06-14 Atlantic Richfield Company Silicon purification
US4415545A (en) * 1980-12-15 1983-11-15 Monkowski Joseph R Solid film growth via preferential etching of liquid solutions
EP2709952A1 (en) * 2011-05-16 2014-03-26 Boston Silicon Materials LLC Manufacturing and applications of silicon metal
CN113648672A (en) * 2021-09-01 2021-11-16 云南锡业集团（控股）有限责任公司研发中心 Distillation and condensation device and preparation method of ultra-high purity indium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002443A1 (en) * 1982-01-05 1983-07-21 Stanford Res Inst Int Process and apparatus for obtaining silicon from fluosilicic acid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT159886B (en) * 1936-09-28 1940-12-10 Gewerkschaft Leubsdorf Process for the extraction of amorphous, elemental silicon.
DE754539C (en) * 1938-08-16 1955-03-07 Hermann Possekel Process for the production of amorphous silicon

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322503A (en) * 1964-05-20 1967-05-30 Bloom Harry Silicon production process
US4193975A (en) * 1977-11-21 1980-03-18 Union Carbide Corporation Process for the production of improved refined metallurgical silicon
US4193974A (en) * 1977-11-21 1980-03-18 Union Carbide Corporation Process for producing refined metallurgical silicon ribbon
US4195067A (en) * 1977-11-21 1980-03-25 Union Carbide Corporation Process for the production of refined metallurgical silicon
US4241037A (en) * 1978-11-09 1980-12-23 Montedison S.P.A. Process for purifying silicon
US4304763A (en) * 1979-08-16 1981-12-08 Consortium Fur Elektrochemische Industrie Gmbh Process for purifying metallurgical-grade silicon
US4415545A (en) * 1980-12-15 1983-11-15 Monkowski Joseph R Solid film growth via preferential etching of liquid solutions
US4388286A (en) * 1982-01-27 1983-06-14 Atlantic Richfield Company Silicon purification
EP2709952A1 (en) * 2011-05-16 2014-03-26 Boston Silicon Materials LLC Manufacturing and applications of silicon metal
CN103702937A (en) * 2011-05-16 2014-04-02 波士顿硅材料有限公司 Manufacturing and applications of silicon metal
EP2709952A4 (en) * 2011-05-16 2014-12-10 Boston Silicon Materials Llc Manufacturing and applications of silicon metal
CN113648672A (en) * 2021-09-01 2021-11-16 云南锡业集团（控股）有限责任公司研发中心 Distillation and condensation device and preparation method of ultra-high purity indium

Also Published As

Publication number Publication date
CH421064A (en) 1966-09-30
FR77520E (en) 1962-03-16
DE1122501B (en) 1962-01-25
LU38582A1 (en)
NL134280C (en)
FR251604A (en)
NL251604A (en)
BE590293A (en) 1960-08-16

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