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
Links
- 239000002893 slag Substances 0.000 abstract 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009502708A (en) | 2005-07-27 | 2009-01-29 | サーミカル・アイピー・プロプリエタリー・リミテッド | Carbothermic method |
| 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 |
| EP2288737A1 (en) * | 2008-05-09 | 2011-03-02 | 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 | Recycling of Waste Mag Carbon Refractories |
| NO337267B1 (en) * | 2014-02-10 | 2016-02-29 | Elkem As | Process for the production of alumina particles |
Family Cites Families (14)
| 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 |
| 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 |
| US4334917A (en) * | 1980-04-16 | 1982-06-15 | Reynolds Metals Company | Carbothermic reduction furnace |
| 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 |
| DK1147236T3 (en) * | 1999-01-08 | 2004-06-28 | Alcoa Inc | Carbothermal aluminum production using scrap aluminum as a refrigerant |
| US6440193B1 (en) * | 2001-05-21 | 2002-08-27 | Alcoa Inc. | Method and reactor for production of aluminum by carbothermic reduction of alumina |
| 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 |
| US6805723B2 (en) * | 2003-03-06 | 2004-10-19 | Alcoa Inc. | Method and reactor for production of aluminum by carbothermic reduction of alumina |
-
2004
- 2004-09-01 US US10/932,846 patent/US20060042413A1/en not_active Abandoned
-
2005
- 2005-09-01 EP EP05794450A patent/EP1794333A2/en not_active Withdrawn
- 2005-09-01 CA CA002577565A patent/CA2577565A1/en not_active Abandoned
- 2005-09-01 BR BRPI0514819-7A patent/BRPI0514819A/en not_active IP Right Cessation
- 2005-09-01 WO PCT/US2005/031521 patent/WO2006026771A2/en not_active Ceased
- 2005-09-01 CN CNA2005800314525A patent/CN101023190A/en active Pending
- 2005-09-01 AU AU2005279732A patent/AU2005279732A1/en not_active Abandoned
- 2005-09-01 RU RU2007111945/02A patent/RU2007111945A/en not_active Application Discontinuation
- 2005-09-01 JP JP2007530444A patent/JP2008511760A/en active Pending
-
2007
- 2007-02-06 NO NO20070674A patent/NO20070674L/en not_active Application Discontinuation
- 2007-03-28 ZA ZA200702572A patent/ZA200702572B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US20060042413A1 (en) | 2006-03-02 |
| JP2008511760A (en) | 2008-04-17 |
| CN101023190A (en) | 2007-08-22 |
| CA2577565A1 (en) | 2006-03-09 |
| AU2005279732A1 (en) | 2006-03-09 |
| WO2006026771A2 (en) | 2006-03-09 |
| BRPI0514819A (en) | 2008-06-24 |
| WO2006026771A3 (en) | 2006-12-14 |
| ZA200702572B (en) | 2008-09-25 |
| EP1794333A2 (en) | 2007-06-13 |
| RU2007111945A (en) | 2008-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FC2A | Withdrawal, rejection or dismissal of laid open patent application |