DE102009038052A1 - Method for pre-reducing metal oxides comprises feeding the metal oxide according to oxidizability into a first reactor, releasing the bound nitrogen and/or the oxygen already in a second reactor and converting a fuel - Google Patents
Method for pre-reducing metal oxides comprises feeding the metal oxide according to oxidizability into a first reactor, releasing the bound nitrogen and/or the oxygen already in a second reactor and converting a fuel Download PDFInfo
- Publication number
- DE102009038052A1 DE102009038052A1 DE102009038052A DE102009038052A DE102009038052A1 DE 102009038052 A1 DE102009038052 A1 DE 102009038052A1 DE 102009038052 A DE102009038052 A DE 102009038052A DE 102009038052 A DE102009038052 A DE 102009038052A DE 102009038052 A1 DE102009038052 A1 DE 102009038052A1
- Authority
- DE
- Germany
- Prior art keywords
- reactor
- metal oxide
- largely
- fuel
- nitrogen
- 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.)
- Granted
Links
Images
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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/527—Charging of the electric furnace
-
- 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
- C22B5/18—Reducing step-by-step
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
- F27D17/003—Extraction of waste gases, collection of fumes and hoods used therefor of waste gases emanating from an electric arc furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C2100/00—Exhaust gas
- C21C2100/02—Treatment of the exhaust gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
Description
Die energetische und ökologische Verbesserung von Prozessen in der Eisenschaffenden Industrie hat in den letzten Jahren zu einer Reduzierung von Energieverbrauch und freigesetzten Emissionen geführt. Eine Zielrichtung hierbei ist es, Metalloxiderze vor dem eigentlichen Verhüttungsprozess vorzureduzieren. In diesem Zusammenhang sind eine Vielzahl von Schutzrechten angemeldet bzw. erteilt worden. So wird in
In dieser Erfindung soll ein Verfahren, wie aus
Diese Erfindung orientiert sich bei der apparativen Ausgestaltung an
Das Verfahren,
Im Brennstoffreaktor geht mindestens ein Teil des im Metallerz vorhandenen Sauerstoffs eine Verbindung mit dem Brennstoff ein, je nach Brennstoff entsteht Kohlendioxid und/oder Wasser. Dieser Reaktor wird beim Einsatz fester Brennstoffe so mit Metallerzpartikeln beschickt, dass diese vorwiegend schwerkraftbedingt von oben nach unten durch diesen wandern, wobei eine Teilfluidisierung durch zugeführte und entstehende Gase nicht ausgeschlossen wird. Die Brennstoffzufuhr ist so auszuführen, dass eine geeignete Vermischung von Brennstoff und Metallerzpartikeln erfolgt und dass ein möglichst vollständiger Brennstoffumsatz innerhalb des Reaktors erreicht wird. Zur Verbesserung der erzielten Umsätze in diesem Reaktor wird auch optional eine mitunter gestufte Zugabe von Wasserdampf (
Beispielhaft wird der oben beschriebene Prozess für den Einsatz von Ilmenit (FeTiO3) dargestellt,
Die Erfindung ist vorangehend anhand von einem möglichen Ausführungsbeispiel beschrieben worden. Ohne den Gegenstand der Erfindung zu verlassen, offenbaren sich einem Fachmann zahlreiche weitere Ausgestaltungen, ohne den Gegenstand der Erfindung zu verlassen.The invention has been described above with reference to a possible embodiment. Without departing from the subject matter of the invention, numerous further embodiments will be apparent to a person skilled in the art without departing from the subject matter of the invention.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Brennstoff-/ReduktionsreaktorFuel / reduction reactor
- 22
- Brennstoffstromfuel flow
- 33
- Luft-/OxidationsreaktorAir / oxidation reactor
- 44
- Luftstromairflow
- 55
- Oxidierter Erz-/Sauerstoffverarmter Luft-/AschestromOxidized ore / oxygen depleted air / ash stream
- 66
- Reduzierter ErzstromReduced ore flow
- 77
- RoherzstromRoherzstrom
- 88th
- RoherzstromRoherzstrom
- 99
- Sauerstoffverarmter LuftstromOxygen depleted airflow
- 1010
- Oxidierter ErzstromOxidized ore stream
- 1111
- Erz-/AschestromOre / ash stream
- 1212
- WärmeübertragerHeat exchanger
- 13 13
- Vorrichtung zur gasseitigen Trennung der ReaktorenDevice for gas-side separation of the reactors
- 1414
- WasserdampfstromSteam power
- 1515
- Reduzierter ErzstromReduced ore flow
- 1616
- Reduzierter Erzstrom zur VerhüttungReduced ore flow for smelting
- 1717
- Abscheide-/TrennvorrichtungSeparation / separation device
- 1818
- Reduzierter ErzstromReduced ore flow
- 1919
- Stickstofffreier GasstromNitrogen-free gas flow
- 2020
- Reduzierter Erzstrom zur VerhüttungReduced ore flow for smelting
- 2121
- Abscheide-/TrennvorrichtungSeparation / separation device
- 2222
- Abscheide-/TrennvorrichtungSeparation / separation device
- 2323
- Abscheide-/TrennvorrichtungSeparation / separation device
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 0743368 B1 [0001] EP 0743368 B1 [0001]
- EP 0474704 B1 [0001] EP 0474704 B1 [0001]
- EP 0596107 B1 [0001] EP 0596107 B1 [0001]
- EP 0543757 B1 [0001] EP 0543757 B1 [0001]
- EP 0741801 B1 [0001] EP 0741801 B1 [0001]
- DE 10336676 B4 [0001] DE 10336676 B4 [0001]
- US 5447024 [0002] US 5447024 [0002]
- KR 100636881 B1 [0002] KR 100636881 B1 [0002]
- DE 19930071 C2 [0003] DE 19930071 C2 [0003]
- DE 10033453 B4 [0003] DE 10033453 B4 [0003]
Claims (22)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009038052A DE102009038052B4 (en) | 2009-08-19 | 2009-08-19 | Smelting process by using a pre-reduced Ilmeniterzstromes and / or Hematitezstromes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009038052A DE102009038052B4 (en) | 2009-08-19 | 2009-08-19 | Smelting process by using a pre-reduced Ilmeniterzstromes and / or Hematitezstromes |
Publications (3)
Publication Number | Publication Date |
---|---|
DE102009038052A1 true DE102009038052A1 (en) | 2011-03-03 |
DE102009038052A8 DE102009038052A8 (en) | 2011-06-01 |
DE102009038052B4 DE102009038052B4 (en) | 2012-09-27 |
Family
ID=43524934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009038052A Expired - Fee Related DE102009038052B4 (en) | 2009-08-19 | 2009-08-19 | Smelting process by using a pre-reduced Ilmeniterzstromes and / or Hematitezstromes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102009038052B4 (en) |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5447024A (en) | 1992-06-03 | 1995-09-05 | Tokyo Electric Power Co., Inc. | Chemical-looping combustion power generation plant system |
EP0596107B1 (en) | 1990-12-27 | 1996-10-09 | Kawasaki Steel Corporation | Fluidized bed preliminary reducing furnace for raw material comprising oxide |
EP0543757B1 (en) | 1991-11-19 | 1997-03-05 | Sollac | Plant for the reduction of iron ore in circulating fluidised bed |
EP0474704B1 (en) | 1989-06-02 | 1998-02-11 | Cra Services Limited | Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases |
EP0741801B1 (en) | 1994-12-29 | 2000-04-12 | POHANG IRON & STEEL CO., LTD. | Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
EP0743368B1 (en) | 1995-05-18 | 2001-08-29 | Technological Resources Pty. Ltd. | A smelting reduction method with increased effectiveness |
DE19930071C2 (en) | 1999-06-30 | 2001-09-27 | Wolfgang Krumm | Method and device for pyrolysis and gasification of organic substances and mixtures |
DE10336676B4 (en) | 2003-08-09 | 2005-09-29 | Outokumpu Oyj | Process and plant for the reduction of iron oxide-containing solids |
KR100636881B1 (en) | 2005-07-14 | 2006-10-20 | 한국과학기술원 | Chemical-looping combustor using circulating fluidized bed with double loops |
DE10033453B4 (en) | 2000-07-10 | 2006-11-02 | Herhof Verwaltungsgesellschaft Mbh | Process and device for recycling substances and mixtures containing organic components |
WO2008044942A1 (en) * | 2006-10-11 | 2008-04-17 | Sinvent As | Chemical looping combustion |
AT505526A1 (en) * | 2007-08-14 | 2009-02-15 | Univ Wien Tech | FLUID BED REACTOR SYSTEM |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004053676B4 (en) * | 2004-11-03 | 2010-02-25 | Outotec Oyj | Process and plant for the production of titanium slag from ilmenite |
-
2009
- 2009-08-19 DE DE102009038052A patent/DE102009038052B4/en not_active Expired - Fee Related
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0474704B1 (en) | 1989-06-02 | 1998-02-11 | Cra Services Limited | Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases |
EP0596107B1 (en) | 1990-12-27 | 1996-10-09 | Kawasaki Steel Corporation | Fluidized bed preliminary reducing furnace for raw material comprising oxide |
EP0543757B1 (en) | 1991-11-19 | 1997-03-05 | Sollac | Plant for the reduction of iron ore in circulating fluidised bed |
US5447024A (en) | 1992-06-03 | 1995-09-05 | Tokyo Electric Power Co., Inc. | Chemical-looping combustion power generation plant system |
EP0741801B1 (en) | 1994-12-29 | 2000-04-12 | POHANG IRON & STEEL CO., LTD. | Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
EP0743368B1 (en) | 1995-05-18 | 2001-08-29 | Technological Resources Pty. Ltd. | A smelting reduction method with increased effectiveness |
DE19930071C2 (en) | 1999-06-30 | 2001-09-27 | Wolfgang Krumm | Method and device for pyrolysis and gasification of organic substances and mixtures |
DE10033453B4 (en) | 2000-07-10 | 2006-11-02 | Herhof Verwaltungsgesellschaft Mbh | Process and device for recycling substances and mixtures containing organic components |
DE10336676B4 (en) | 2003-08-09 | 2005-09-29 | Outokumpu Oyj | Process and plant for the reduction of iron oxide-containing solids |
KR100636881B1 (en) | 2005-07-14 | 2006-10-20 | 한국과학기술원 | Chemical-looping combustor using circulating fluidized bed with double loops |
WO2008044942A1 (en) * | 2006-10-11 | 2008-04-17 | Sinvent As | Chemical looping combustion |
AT505526A1 (en) * | 2007-08-14 | 2009-02-15 | Univ Wien Tech | FLUID BED REACTOR SYSTEM |
Non-Patent Citations (2)
Title |
---|
Forret, A. et al.: Chemical Looping Combustion Process applied to liquid fuels. Invited Lectures: ECM 2009 Fourth European Combustion Meeting, 14-17 April 2009. URL:http://www.combusting.org.uk/ECM_2009/P810025. df [recherchiert am 07.04.2010] * |
Forret, A. et al.: Chemical Looping Combustion Process applied to liquid fuels. Invited Lectures: ECM 2009 Fourth European Combustion Meeting, 14-17 April 2009. URL:http://www.combusting.org.uk/ECM_2009/P810025.pdf [recherchiert am 07.04.2010] |
Also Published As
Publication number | Publication date |
---|---|
DE102009038052B4 (en) | 2012-09-27 |
DE102009038052A8 (en) | 2011-06-01 |
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Legal Events
Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8196 | Reprint of faulty title page (publication) german patentblatt: part 1a6 | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20121228 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130301 |