DE102009038052B4 - Smelting process by using a pre-reduced Ilmeniterzstromes and / or Hematitezstromes - Google Patents
Smelting process by using a pre-reduced Ilmeniterzstromes and / or Hematitezstromes Download PDFInfo
- Publication number
- DE102009038052B4 DE102009038052B4 DE102009038052A DE102009038052A DE102009038052B4 DE 102009038052 B4 DE102009038052 B4 DE 102009038052B4 DE 102009038052 A DE102009038052 A DE 102009038052A DE 102009038052 A DE102009038052 A DE 102009038052A DE 102009038052 B4 DE102009038052 B4 DE 102009038052B4
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- DE
- Germany
- Prior art keywords
- reduction
- ore
- fuel
- stream
- gas
- 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.)
- Expired - Fee Related
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Verhüttungsverfahren durch Einsatz eines vorreduzierten Ilmeniterzstromes und/oder Hämatiterzstromes umfassend die Schritte: a. Zyklische Oxidation und Reduktion von Ilmeniterz und/oder Hämatiterz, wobei die Oxidation in einer Wirbelschicht unter Zugabe von Luft und die Reduktion unter Zugabe eines Brennstoffs in einem Wanderbett stattfinden, b. Zugabe weiteren Ilmeniterzes und/oder Hämatiterzes an geeigneter Stelle in Schritt a. c. Ausschleusen eines Teilerzstromes nach der Reduktion d. Metallurgische Weiterverarbeitung des Teilerzstromes von c. e. Das Abgas aus der Reduktion in Schritt a. besteht aus den gasförmigen Produkten der Brennstoffumwandlung, vorwiegend CO2 und H2O f. Aus dem Abgas aus Schritt e. wird nach einer energetischen Nutzung durch Auskondensieren das H2O entfernt, sodass das entstehende Restgas weitgehend aus CO2 besteht g. Rückführung eines Gichtgases aus Schritt d in die Reduktion von Schritt a.Smelting process using a prereduced ilmenite ore stream and / or hematite ore stream comprising the steps: a. Cyclical oxidation and reduction of ilmenite ore and / or hematite ore, the oxidation taking place in a fluidized bed with the addition of air and the reduction with the addition of a fuel in a moving bed, b. Addition of further ilmenite ore and / or hematite ore at a suitable point in step a. c. Discharge of a partial ore stream after reduction d. Metallurgical processing of the partial ore stream from c. e. The exhaust gas from the reduction in step a. consists of the gaseous products of the fuel conversion, mainly CO2 and H2O f. From the exhaust gas from step e. After an energetic use, the H2O is removed by condensation, so that the resulting residual gas consists largely of CO2 g. Recirculation of a furnace gas from step d into the reduction from step a.
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
Weiterhin ist aus
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
- 1313
- Vorrichtung zur gasseitigen Trennung der ReaktorenDevice for gas-side separation of the reactors
- 1414
- WasserdampfstromSteam power
- 15 15
- 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
Claims (1)
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 |
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DE102009038052A1 DE102009038052A1 (en) | 2011-03-03 |
DE102009038052A8 DE102009038052A8 (en) | 2011-06-01 |
DE102009038052B4 true DE102009038052B4 (en) | 2012-09-27 |
Family
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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)
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DE (1) | DE102009038052B4 (en) |
Citations (4)
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 |
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 |
DE102004053676B4 (en) * | 2004-11-03 | 2010-02-25 | Outotec Oyj | Process and plant for the production of titanium slag from ilmenite |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2114861T3 (en) | 1989-06-02 | 1998-06-16 | Cra Services | PRE-HEATING AND PRE-REDUCTION OF A METAL OXIDE MINERAL USING HIGH TEMPERATURE EXHAUST GASES. |
DE69028856T2 (en) | 1990-12-27 | 1997-03-20 | Kawasaki Steel Co | PRE-REDUCTION STOVE WITH A FLUIDIZED LAYER FOR OXIDE-BASED RAW MATERIALS |
FR2683830B1 (en) | 1991-11-19 | 1994-04-08 | Irsid | INSTALLATION FOR REDUCING THE IRON ORE IN A FLUIDIZED BED CIRCULATING. |
AU691711B2 (en) | 1994-12-29 | 1998-05-21 | Pohang Iron & Steel Co., Ltd. | Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
DE19518343C2 (en) | 1995-05-18 | 1997-08-21 | Tech Resources Pty Ltd | Melting reduction process 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 |
DE10336676C5 (en) | 2003-08-09 | 2011-03-31 | 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 |
-
2009
- 2009-08-19 DE DE102009038052A patent/DE102009038052B4/en not_active Expired - Fee Related
Patent Citations (4)
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 |
DE102004053676B4 (en) * | 2004-11-03 | 2010-02-25 | Outotec Oyj | Process and plant for the production of titanium slag from ilmenite |
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 (1)
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.pdf [recherchiert am 07.04.2010] * |
Also Published As
Publication number | Publication date |
---|---|
DE102009038052A8 (en) | 2011-06-01 |
DE102009038052A1 (en) | 2011-03-03 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
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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 |