[go: up one dir, main page]

PT71912B - A process for the preparation of silicon or ferrosilicon - Google Patents

A process for the preparation of silicon or ferrosilicon

Info

Publication number
PT71912B
PT71912B PT71912A PT7191280A PT71912B PT 71912 B PT71912 B PT 71912B PT 71912 A PT71912 A PT 71912A PT 7191280 A PT7191280 A PT 7191280A PT 71912 B PT71912 B PT 71912B
Authority
PT
Portugal
Prior art keywords
ferrosilicon
silicon
preparation
Prior art date
Application number
PT71912A
Other languages
English (en)
Other versions
PT71912A (en
Original Assignee
Kema Nord Ab
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 Kema Nord Ab filed Critical Kema Nord Ab
Publication of PT71912A publication Critical patent/PT71912A/pt
Publication of PT71912B publication Critical patent/PT71912B/pt

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
    • C01B33/021—Preparation
    • C01B33/023—Preparation by reduction of silica or free silica-containing material
    • C01B33/025—Preparation by reduction of silica or free silica-containing material with carbon or a solid carbonaceous material, i.e. carbo-thermal process
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C35/00—Master alloys for iron or steel
    • C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Silicon Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)
PT71912A 1979-10-24 1980-10-13 A process for the preparation of silicon or ferrosilicon PT71912B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7908821A SE421065B (sv) 1979-10-24 1979-10-24 Forfarande for framstellning av kisel eller ferrokisel

Publications (2)

Publication Number Publication Date
PT71912A PT71912A (en) 1980-11-01
PT71912B true PT71912B (en) 1981-08-31

Family

ID=20339150

Family Applications (1)

Application Number Title Priority Date Filing Date
PT71912A PT71912B (en) 1979-10-24 1980-10-13 A process for the preparation of silicon or ferrosilicon

Country Status (11)

Country Link
US (1) US4435209A (pt)
EP (1) EP0028208B1 (pt)
JP (1) JPS5663814A (pt)
BR (1) BR8006856A (pt)
CA (1) CA1150932A (pt)
DE (1) DE3071074D1 (pt)
ES (1) ES8107125A1 (pt)
NO (1) NO152138B (pt)
PT (1) PT71912B (pt)
SE (1) SE421065B (pt)
ZA (1) ZA806237B (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU187645B (en) * 1982-02-18 1986-02-28 Vasipari Kutato Fejleszto Process for the production of complex ferro-alloys of si-base
US5069740A (en) * 1984-09-04 1991-12-03 Texas Instruments Incorporated Production of semiconductor grade silicon spheres from metallurgical grade silicon particles
IT1176955B (it) * 1984-10-12 1987-08-26 Samin Abrasivi Spa Procedimento di produzione di silicio metallico adatto per essere impiegato nell'industria fotovoltaica
US4798659A (en) * 1986-12-22 1989-01-17 Dow Corning Corporation Addition of calcium compounds to the carbothermic reduction of silica
US5174982A (en) * 1990-12-12 1992-12-29 Dow Corning Corporation Control of carbon balance in a silicon smelting furnace
NO178346C (no) * 1993-09-13 1996-03-06 Sydvaranger As Framgangsmåte for framstilling av ferrosilisium
US20080314446A1 (en) * 2007-06-25 2008-12-25 General Electric Company Processes for the preparation of solar-grade silicon and photovoltaic cells
US20080314445A1 (en) * 2007-06-25 2008-12-25 General Electric Company Method for the preparation of high purity silicon
US7572425B2 (en) * 2007-09-14 2009-08-11 General Electric Company System and method for producing solar grade silicon

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE220338C1 (pt) *
DE160101C (pt) *
FR1530655A (fr) * 1967-05-19 1968-06-28 Pechiney Prod Chimiques Sa Fabrication du silicium et de ses alliages par carbothermie
US3704094A (en) 1969-11-19 1972-11-28 Union Carbide Corp Process for the production of elemental silicon
BE759122A (fr) * 1969-11-19 1971-05-18 Union Carbide Corp Procede et charge de production de silicium au four a arc electrique par reduction carbothermique de silice
JPS5133050B1 (pt) * 1971-05-10 1976-09-17
NO129623B (pt) * 1972-01-25 1974-05-06 Elkem Spigerverket As
SE415558B (sv) * 1978-06-02 1980-10-13 Kema Nord Ab Forfarande for framstellning av kisel eller fenokisel

Also Published As

Publication number Publication date
DE3071074D1 (en) 1985-10-17
NO152138B (no) 1985-04-29
SE421065B (sv) 1981-11-23
JPS5663814A (en) 1981-05-30
ES496186A0 (es) 1981-09-16
ZA806237B (en) 1981-09-30
EP0028208B1 (en) 1985-09-11
NO803159L (no) 1981-04-27
EP0028208A1 (en) 1981-05-06
ES8107125A1 (es) 1981-09-16
US4435209A (en) 1984-03-06
SE7908821L (sv) 1981-04-25
BR8006856A (pt) 1981-04-28
PT71912A (en) 1980-11-01
CA1150932A (en) 1983-08-02

Similar Documents

Publication Publication Date Title
JPS55136116A (en) Preparation of silicon
DE3060027D1 (en) Process for the preparation of benzimidazolylbenzofurans
ZA792651B (en) A process for the preparation of silicon or ferrosilicon
DE3066320D1 (en) A process for the preparation of iron crystalline silicates
PT71518A (en) Process for the preparation of n-phosphonomethylglycine
GB2048842B (en) Process for the preparation of inorganic peroxides
GB2055357B (en) Process for the preparation of crystalline silicates
DE3060854D1 (en) Process for the preparation of 3-phenoxybenzaldehydes
DE3060155D1 (en) Process for the preparation of thiazolidine-2-thiones
GB2041781B (en) Die-pulling of silicon
DE3062396D1 (en) Process for the preparation of somatostatine
DE3071074D1 (en) A process for the preparation of silicon or ferrosilicon
GB2042542B (en) Process for the preparation of meta-chloroanilines
DE3066550D1 (en) Process for the preparation of aryl-mono-,-di-and/or polyurethanes-
DE3065967D1 (en) Process for the preparation of diorganomagnesium compounds
RO83033B (ro) Procedeu de preparare a unor cefalosporine
JPS5665983A (en) Silicon steel
JPS55149114A (en) Preparation of silicon
GB2098208B (en) Process for the preparation of 7-acylindolines
DE2960035D1 (en) Process for the preparation of silanes
DE3062386D1 (en) Process for the preparation of 3-hydroxycepham compounds
GB2051053B (en) Process for the preparation of d-a-aminoacids
DE2964328D1 (en) Process for the preparation of m-amino-phenols
IL59761A0 (en) A process for the preparation of substituted 2-aminopyrazines
DE3060470D1 (en) Process for the preparation of 4-nitroso-diphenyl amine