NO20083970L - Process for electrolytic production and refining of metals - Google Patents

Process for electrolytic production and refining of metals

Info

Publication number
NO20083970L
NO20083970L NO20083970A NO20083970A NO20083970L NO 20083970 L NO20083970 L NO 20083970L NO 20083970 A NO20083970 A NO 20083970A NO 20083970 A NO20083970 A NO 20083970A NO 20083970 L NO20083970 L NO 20083970L
Authority
NO
Norway
Prior art keywords
metal
refined
molten
layer
alloy
Prior art date
Application number
NO20083970A
Other languages
Norwegian (no)
Other versions
NO344829B1 (en
Inventor
Kai Johansen
Marianne Engvoll
Bjorn Myhre
Donald Sadoway
Krister Engvoll
Original Assignee
Elkem 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 Elkem As filed Critical Elkem As
Publication of NO20083970L publication Critical patent/NO20083970L/en
Publication of NO344829B1 publication Critical patent/NO344829B1/en

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
    • 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
    • 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
    • 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
    • C25C3/26—Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium
    • C25C3/28—Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
    • 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)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Silicon Compounds (AREA)

Abstract

Den foreliggende oppfinnelse vedrører en elektrolytisk fremgangsmåte for fremstilling og raffinering av metaller med et smeltepunkt over ca. 1000ºC, særlig silisium, hvor det fremskaffes til en første elektrolysecelle, et øvre elektrolyttsjikt omfattende en første elektrolytt, et nedre sjikt av en smeltet legering omfattende en legering av det metall som skal raffineres og minst et metall mer edelt enn metallet som skal raffineres. Det nedre legeringssjikt utgjør en katode i den første elektrolysecellen, og en anode er anordnet i det øvre smeltede elektrolyttsjiktet. En andre elektrolysecelle er fremskaffet med et øvre smeltet metallsjikt av det samme metallet som metallet som skal raffineres, hvilket sjikt utgjør en katode, et nedre smeltet legeringssjikt som utgjør en anode hvilken legering har en høyere tetthet enn metallet som skal raffineres og et mellomsjikt av en smeltet elektrolytt med en tetthet mellom tettheten for det øvre og nedre smeltede sjikt. Begge elektrolyttene er oksidbaserte elektrolytter inneholdende oksid av det metallet som skal raffineres og elektrolyttene er i smeltet tilstand og har et smeltepunkt under driftstemperaturen for prosessen. Råmateriale omfattende et oksid av metallet som skal raffineres tilsettes til den første cellen, og likestrøm tilføres gjennom anoden til katoden slik at metallet som skal raffineres beveges fra anoden og avsettes i smeltet tilstand ved katoden. De to cellene kan drives i to separate trinn. Et trinn kan fremstille legering og det andre trinn kan raffinere metallet fra legeringen.The present invention relates to an electrolytic process for the production and refining of metals having a melting point above ca. 1000ºC, especially silicon, where it is provided to a first electrolytic cell, an upper electrolyte layer comprising a first electrolyte, a lower layer of a molten alloy comprising an alloy of the metal to be refined and at least one metal more noble than the metal to be refined. The lower alloy layer constitutes a cathode in the first electrolytic cell and an anode is provided in the upper molten electrolyte layer. A second electrolytic cell is provided with an upper molten metal layer of the same metal as the metal to be refined, which layer constitutes a cathode, a lower molten alloy layer constituting an anode which has a higher density than the metal to be refined, and an intermediate layer of a molten electrolyte with a density between the density of the upper and lower molten layers. Both electrolytes are oxide-based electrolytes containing oxide of the metal to be refined and the electrolytes are in the molten state and have a melting point below the operating temperature of the process. Raw material comprising an oxide of the metal to be refined is added to the first cell, and direct current is supplied through the anode to the cathode such that the metal to be refined is moved from the anode and deposited in the molten state at the cathode. The two cells can be operated in two separate steps. One step can produce alloy and the other step can refine the metal from the alloy.

NO20083970A 2006-03-10 2008-09-17 Process for electrolytic production and refining of silicon NO344829B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US37287506A 2006-03-10 2006-03-10
US80740006P 2006-07-14 2006-07-14
PCT/US2007/063555 WO2007106709A2 (en) 2006-03-10 2007-03-08 Method for electrolytic production and refining of metals

Publications (2)

Publication Number Publication Date
NO20083970L true NO20083970L (en) 2008-09-17
NO344829B1 NO344829B1 (en) 2020-05-18

Family

ID=38510169

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20083970A NO344829B1 (en) 2006-03-10 2008-09-17 Process for electrolytic production and refining of silicon

Country Status (8)

Country Link
EP (1) EP1999286B1 (en)
JP (1) JP5183498B2 (en)
AU (1) AU2007226754B2 (en)
BR (1) BRPI0708603B1 (en)
CA (1) CA2645161C (en)
ES (1) ES2633113T3 (en)
NO (1) NO344829B1 (en)
WO (1) WO2007106709A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8460535B2 (en) * 2009-04-30 2013-06-11 Infinium, Inc. Primary production of elements
DE112010004425T5 (en) * 2009-05-26 2012-11-29 Sumitomo Chemical Co., Ltd. Process for the preparation of purified metal or semi-metal
TW201247937A (en) * 2011-05-30 2012-12-01 Univ Kyoto Process for producing silicon
WO2013028126A1 (en) * 2011-08-19 2013-02-28 Jernkontoret A process for recovering metals and an electrolytic apparatus for performing the process
KR101793471B1 (en) * 2016-07-20 2017-11-06 충남대학교산학협력단 Refining Method of Metal Using Electroreduction and Electrorefining process
US11591704B2 (en) * 2017-08-01 2023-02-28 Boston Electrometallurgical Corporation Electrolytic production of reactive metals
JP7373361B2 (en) * 2019-11-07 2023-11-02 三菱重工業株式会社 Electrolytic smelting furnace and electrolytic smelting method
KR102498338B1 (en) * 2020-03-17 2023-02-10 서울대학교산학협력단 Electrolysis device and method for production of hydrogen peroxide
KR102380607B1 (en) * 2020-07-06 2022-03-31 한국원자력연구원 Device for disposal of silicone wastes and disposal method using the same
CN115012003B (en) * 2022-06-20 2024-02-06 中南大学 Method and device for continuously producing antimony sulfide ore through molten salt electrolysis

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1534318A (en) * 1922-12-21 1925-04-21 Aluminum Co Of America Electrolytic refining of aluminum
GB833767A (en) * 1956-10-19 1960-04-27 Timax Corp Continuous electrolytic production of titanium
US3036961A (en) * 1958-02-24 1962-05-29 Herasymenko Anna Electrolytic refinement of metals
US3203883A (en) * 1961-07-01 1965-08-31 Rcsearch Inst For Iron Steel A Method of refining molten metals by electrolyzing molten slag under arc discharge
NL290208A (en) 1962-03-14
US3219516A (en) * 1962-07-30 1965-11-23 Staley Mfg Co A E Bonded multi-layer structures
US4292145A (en) * 1980-05-14 1981-09-29 The Board Of Trustees Of Leland Stanford Junior University Electrodeposition of molten silicon
CH654335A5 (en) * 1983-03-11 1986-02-14 Alusuisse CELL FOR REFINING ALUMINUM.
US4481232A (en) * 1983-05-27 1984-11-06 The United States Of America As Represented By The Department Of Energy Method and apparatus for producing high purity silicon
NO156172C (en) * 1984-02-13 1987-08-12 Ila Lilleby Smelteverker PROCEDURE FOR THE PREPARATION OF PURIFIED SILICONE BY ELECTROLYTIC REFINING.
US5071523A (en) * 1989-10-13 1991-12-10 Aluminum Company Of America Two stage lithium transport process
US5593566A (en) * 1995-06-09 1997-01-14 General Motors Corporation Electrolytic production process for magnesium and its alloys
US5976345A (en) * 1997-01-06 1999-11-02 Boston University Method and apparatus for metal extraction and sensor device related thereto
NO317073B1 (en) * 2001-06-05 2004-08-02 Sintef Electrolyte and process for the manufacture or refining of silicon
AU2002349216B2 (en) * 2001-11-22 2006-04-27 Qit-Fer Et Titane Inc. A method for electrowinning of titanium metal or alloy from titanium oxide containing compound in the liquid state

Also Published As

Publication number Publication date
EP1999286A4 (en) 2011-09-07
AU2007226754B2 (en) 2011-01-20
NO344829B1 (en) 2020-05-18
CA2645161A1 (en) 2007-09-20
JP5183498B2 (en) 2013-04-17
WO2007106709A2 (en) 2007-09-20
EP1999286B1 (en) 2017-04-19
BRPI0708603B1 (en) 2016-05-17
AU2007226754A1 (en) 2007-09-20
WO2007106709A3 (en) 2007-11-29
CA2645161C (en) 2011-11-22
WO2007106709A9 (en) 2008-01-03
ES2633113T3 (en) 2017-09-19
BRPI0708603A2 (en) 2011-06-07
EP1999286A2 (en) 2008-12-10
JP2009529607A (en) 2009-08-20

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Legal Events

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CHAD Change of the owner's name or address (par. 44 patent law, par. patentforskriften)

Owner name: ELKEM ASA, NO