NO20070674L - Method of using a single carbothermal reduction furnace with temperature control in the furnace. - Google Patents

Method of using a single carbothermal reduction furnace with temperature control in the furnace.

Info

Publication number
NO20070674L
NO20070674L NO20070674A NO20070674A NO20070674L NO 20070674 L NO20070674 L NO 20070674L NO 20070674 A NO20070674 A NO 20070674A NO 20070674 A NO20070674 A NO 20070674A NO 20070674 L NO20070674 L NO 20070674L
Authority
NO
Norway
Prior art keywords
furnace
temperature control
slag
carbothermal reduction
produce
Prior art date
Application number
NO20070674A
Other languages
Norwegian (no)
Inventor
Richard J Fruehan
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 NO20070674L publication Critical patent/NO20070674L/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/02—Light metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/02—Obtaining aluminium with reducing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

En oppstartprosess ved bruk av en karbotermisk reaktorovn (11) med et reaktorrom omfattende: Tilsetning av Al2O3 og C (karbon) for å starte prosessen og smelte blandingen for å tilveiebringe en (Al2O3-Al4C3) slagg med en temperatur mellom ca. 1875ºC og 2000ºC; tilsette Al4C3 til slaggen og øke temperaturen i ovnen (11) for å danne et topplag av Al inneholdende ca. 6 vekt % til 8 vekt % C (21) og en bunnfase av slagg (22); tilsette Al2O3 til Al-C/slaggen (21, 22) for å fremstille en Al2O3-rik slagg og reduksjon av temperaturen for å fremstille en avkarboniseringsreaksjon (30) i reaktorrommet, for å fremstille et topplag av Al inneholdende <5 vekt % C (23) og som tappes etter trinn (40). Den gjenværende slagg er startmaterialet.A start-up process using a carbothermal reactor furnace (11) with a reactor compartment comprising: Addition of Al 2 O 3 and C (carbon) to start the process and melt the mixture to provide a (Al 2 O 3 1875ºC and 2000ºC; adding Al 6 wt% to 8 wt% C (21) and a bottom phase of slag (22); adding Al2O3 to Al-C / slag (21, 22) to produce an Al2O3-rich slag and reducing the temperature to produce a decarbonisation reaction (30) in the reactor compartment to produce a top layer of Al containing <5% by weight C ( 23) and tapped after step (40). The remaining slag is the starting material.

NO20070674A 2004-09-01 2007-02-06 Method of using a single carbothermal reduction furnace with temperature control in the furnace. NO20070674L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/932,846 US20060042413A1 (en) 2004-09-01 2004-09-01 Method using single furnace carbothermic reduction with temperature control within the furnace
PCT/US2005/031521 WO2006026771A2 (en) 2004-09-01 2005-09-01 Method using single furnace carbothermic reduction with temperature control within the furnace

Publications (1)

Publication Number Publication Date
NO20070674L true NO20070674L (en) 2007-02-06

Family

ID=35941150

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20070674A NO20070674L (en) 2004-09-01 2007-02-06 Method of using a single carbothermal reduction furnace with temperature control in the furnace.

Country Status (11)

Country Link
US (1) US20060042413A1 (en)
EP (1) EP1794333A2 (en)
JP (1) JP2008511760A (en)
CN (1) CN101023190A (en)
AU (1) AU2005279732A1 (en)
BR (1) BRPI0514819A (en)
CA (1) CA2577565A1 (en)
NO (1) NO20070674L (en)
RU (1) RU2007111945A (en)
WO (1) WO2006026771A2 (en)
ZA (1) ZA200702572B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2633210C (en) 2005-07-27 2014-02-04 Thermical Ip Pty Ltd. Carbothermic processes
US20080016984A1 (en) * 2006-07-20 2008-01-24 Alcoa Inc. Systems and methods for carbothermically producing aluminum
US7556667B2 (en) 2007-02-16 2009-07-07 Alcoa Inc. Low carbon aluminum production method using single furnace carbothermic reduction operated in batch mode
US7753988B2 (en) * 2007-07-09 2010-07-13 Alcoa Inc. Use of alumina-carbon agglomerates in the carbothermic production of aluminum
US7704443B2 (en) * 2007-12-04 2010-04-27 Alcoa, Inc. Carbothermic aluminum production apparatus, systems and methods
US8388921B2 (en) * 2008-05-09 2013-03-05 Thermical Ip Pty Ltd. Carbothermic processes
US9068246B2 (en) * 2008-12-15 2015-06-30 Alcon Inc. Decarbonization process for carbothermically produced aluminum
KR101105437B1 (en) * 2010-05-11 2012-01-17 (주)포스코켐텍 Method for regenerating waste MgO-C refractories
NO337267B1 (en) * 2014-02-10 2016-02-29 Elkem As Process for the production of alumina particles

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2974032A (en) * 1960-02-24 1961-03-07 Pechiney Reduction of alumina
US4033757A (en) * 1975-09-05 1977-07-05 Reynolds Metals Company Carbothermic reduction process
GB1590431A (en) * 1976-05-28 1981-06-03 Alcan Res & Dev Process for the production of aluminium
GB1565065A (en) * 1976-08-23 1980-04-16 Tetronics Res & Dev Co Ltd Carbothermal production of aluminium
US4334917A (en) * 1980-04-16 1982-06-15 Reynolds Metals Company Carbothermic reduction furnace
US4216010A (en) * 1979-01-31 1980-08-05 Reynolds Metals Company Aluminum purification system
US4388107A (en) * 1979-01-31 1983-06-14 Reynolds Metals Company Minimum-energy process for carbothermic reduction of alumina
DE2948640C2 (en) * 1979-12-04 1984-12-20 Vereinigte Aluminium-Werke AG, 1000 Berlin und 5300 Bonn Process and device for the thermal extraction of aluminum
US4409021A (en) * 1982-05-06 1983-10-11 Reynolds Metals Company Slag decarbonization with a phase inversion
US4533386A (en) * 1984-03-27 1985-08-06 Process Development Associates, Inc. Process for producing aluminum
ATE268390T1 (en) * 1999-01-08 2004-06-15 Alcoa Inc CARBOTHERMAL PRODUCTION OF ALUMINUM USING ALUMINUM SCRAP AS COOLANT
US6530970B2 (en) * 2001-05-21 2003-03-11 Alcoa Inc. Method for recovering aluminum vapor and aluminum suboxide from off-gases during production of aluminum by carbothermic reduction of alumina
WO2002095078A1 (en) * 2001-05-21 2002-11-28 Elkem Asa Aluminum shapes, method and reactor for the production of aluminum and aluminum shapes by carbothermic reduction of alumina
US6805723B2 (en) * 2003-03-06 2004-10-19 Alcoa Inc. Method and reactor for production of aluminum by carbothermic reduction of alumina

Also Published As

Publication number Publication date
BRPI0514819A (en) 2008-06-24
ZA200702572B (en) 2008-09-25
JP2008511760A (en) 2008-04-17
CN101023190A (en) 2007-08-22
WO2006026771A3 (en) 2006-12-14
US20060042413A1 (en) 2006-03-02
AU2005279732A1 (en) 2006-03-09
WO2006026771A2 (en) 2006-03-09
CA2577565A1 (en) 2006-03-09
EP1794333A2 (en) 2007-06-13
RU2007111945A (en) 2008-10-10

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