US20020124690A1 - Process of producing a mixture of iron ore and low-temperature coke - Google Patents
Process of producing a mixture of iron ore and low-temperature coke Download PDFInfo
- Publication number
- US20020124690A1 US20020124690A1 US10/037,482 US3748202A US2002124690A1 US 20020124690 A1 US20020124690 A1 US 20020124690A1 US 3748202 A US3748202 A US 3748202A US 2002124690 A1 US2002124690 A1 US 2002124690A1
- Authority
- US
- United States
- Prior art keywords
- low
- iron ore
- granular
- reactor
- temperature
- 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.)
- Abandoned
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 24
- 239000000203 mixture Substances 0.000 title claims abstract description 16
- 239000000571 coke Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 11
- 239000007789 gas Substances 0.000 claims abstract description 15
- 238000003763 carbonization Methods 0.000 claims abstract description 14
- 239000003245 coal Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 11
- 238000011946 reduction process Methods 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 239000000155 melt Substances 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material
-
- 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
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
Definitions
- This invention relates to a process of producing a hot, granular mixture of iron ore and low-temperature coke.
- this object is solved in that granular coal and preheated granular iron ore is charged into a low-temperature carbonization reactor, in which temperatures in the range from 800 to 1050° C. are produced by supplying gas containing oxygen and by partial oxidation of the components of the coal, the granular solids being maintained in a turbulent movement and being supplied from the upper region of the reactor to a solids separator, from which a hot exhaust gas is withdrawn, that the granular iron ore is preheated by means of the hot exhaust gas, and that a hot granular mixture of iron ore and low-temperature coke is withdrawn as product from the reactor and/or from the separator.
- the low-temperature carbonization reactor may be designed e.g. as fluidized-bed reactor or as pneumatic conveyor section.
- the pressure in the low-temperature carbonization reactor lies in the range from 1 to 10 bar and preferably 2 to 7 bar.
- coal also lignite
- the coal may also contain water.
- the coal supplied to the low-temperature carbonization reactor has grain sizes up to about 10 mm and preferably up to not more than about 6 mm; the grain sizes of the iron ore lie in the range up to 10 mm and preferably up to 6 mm.
- the weight ratio Fe:C usually lies in the range from 1:1 to 2:1.
- a low-temperature carbonization reactor ( 1 ) To a low-temperature carbonization reactor ( 1 ) granular coal is supplied through line ( 2 ) and preheated granular iron ore is supplied through line ( 3 ). Air for the partial oxidation in the reactor ( 1 ) and for the fluidization and transport of the solids is supplied via line ( 5 ) and enters the reactor ( 1 ) through a distributor ( 6 ). Secondary air is supplied via line ( 4 ). In the reactor, temperatures in the range from 800 to 1050° C. and mostly 850 to 1000° C. are provided. The dwell times for the solids in the reactor ( 1 ) lie in the range from about 2 to 20 sec.
- the solids are supplied from the upper region of the reactor ( 1 ) through the passage ( 8 ) to a separator ( 9 ) designed as cyclone.
- the hot exhaust gases largely free of solids flow upwards in a suspension heat exchanger ( 10 ), to which granular iron ore is supplied from the outside through line (11).
- This iron ore is preheated in direct contact with the hot exhaust gas and supplied through line ( 12 ) to a cyclone separator ( 13 ), from where the preheated iron ore is recirculated to the reactor ( 1 ) through line ( 3 ).
- Exhaust gas is withdrawn via line ( 14 ) and is supplied to a gas cleaning not represented.
- Ore-coke mixture produced is withdrawn on the one hand from the cyclone separator ( 9 ) through line ( 15 ) and on the other hand from the lower region of the reactor ( 1 ) through line ( 16 ).
- line ( 16 ) contains coarser-grained mixture than line ( 15 ).
- a syphon ( 15 a ) expediently serves as pressure barrier.
- the solids mixture can be supplied to the further use, e.g. in a melt reduction process.
- melt reduction process is described e.g. in the U.S. Pat. Nos. 6,083,296 and 6,143,054.
- the iron ore in lines ( 15 ) and ( 16 ) is already partly reduced as compared to the ore of line ( 11 ), where usually 10 to 40% of the oxygen contained in the original iron ore have already been removed.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10101157.1 | 2001-01-12 | ||
| DE10101157A DE10101157A1 (de) | 2001-01-12 | 2001-01-12 | Verfahren zum Erzeugen eines Gemisches aus Eisenerz und Schwelkoks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20020124690A1 true US20020124690A1 (en) | 2002-09-12 |
Family
ID=7670337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/037,482 Abandoned US20020124690A1 (en) | 2001-01-12 | 2002-01-04 | Process of producing a mixture of iron ore and low-temperature coke |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20020124690A1 (de) |
| AU (1) | AU1013702A (de) |
| DE (1) | DE10101157A1 (de) |
| WO (1) | WO2002055744A2 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080124253A1 (en) * | 2004-08-31 | 2008-05-29 | Achim Schmidt | Fluidized-Bed Reactor For The Thermal Treatment Of Fluidizable Substances In A Microwave-Heated Fluidized Bed |
| US20100263487A1 (en) * | 2007-12-12 | 2010-10-21 | Outotec Oyj | Process and plant for producing char and fuel gas |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10260738A1 (de) | 2002-12-23 | 2004-07-15 | Outokumpu Oyj | Verfahren und Anlage zur Förderung von feinkörnigen Feststoffen |
| DE10260731B4 (de) | 2002-12-23 | 2005-04-14 | Outokumpu Oyj | Verfahren und Anlage zur Wärmebehandlung von eisenoxidhaltigen Feststoffen |
| DE10260733B4 (de) | 2002-12-23 | 2010-08-12 | Outokumpu Oyj | Verfahren und Anlage zur Wärmebehandlung von eisenoxidhaltigen Feststoffen |
| DE10260734B4 (de) | 2002-12-23 | 2005-05-04 | Outokumpu Oyj | Verfahren und Anlage zur Herstellung von Schwelkoks |
| DE10260739B3 (de) | 2002-12-23 | 2004-09-16 | Outokumpu Oy | Verfahren und Anlage zur Herstellung von Metalloxid aus Metallverbindungen |
| DE10260737B4 (de) | 2002-12-23 | 2005-06-30 | Outokumpu Oyj | Verfahren und Anlage zur Wärmebehandlung von titanhaltigen Feststoffen |
| DE10260741A1 (de) | 2002-12-23 | 2004-07-08 | Outokumpu Oyj | Verfahren und Anlage zur Wärmebehandlung von feinkörnigen Feststoffen |
| CN101250419B (zh) * | 2008-03-21 | 2011-05-25 | 西安建筑科技大学 | 一种煤气内热低温干馏方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2742353A (en) * | 1954-11-01 | 1956-04-17 | Exxon Research Engineering Co | Iron ore reduction process |
| SE384226B (sv) * | 1974-05-20 | 1976-04-26 | Stora Kopparbergs Bergslags Ab | Sett vid reduktion av finfordelade jernoxidhaltiga material i flytbedd |
| SE387366C (sv) * | 1974-12-12 | 1980-04-14 | Stora Kopparbergs Bergslags Ab | Sett for reduktion av finfordelat metalloxidhaltigt material |
| US4094665A (en) * | 1977-05-13 | 1978-06-13 | Stora Kopparbergs Bergslags Ab | Method for simultaneous combined production of electrical energy and crude iron |
| JPS5785911A (en) * | 1980-11-18 | 1982-05-28 | Ishikawajima Harima Heavy Ind Co Ltd | Direct reduction and melting method for iron oxide |
| DE3540541A1 (de) * | 1985-11-15 | 1987-05-21 | Metallgesellschaft Ag | Verfahren zur reduktion von hoeheren metalloxiden zu niedrigen metalloxiden |
| FI92223C (sv) * | 1992-01-24 | 1994-10-10 | Ahlstroem Oy | Förfarande för reduktion av metalloxidhaltigt material i fast fas |
| CU23070A3 (es) * | 1999-01-12 | 2005-07-19 | Falconbridge Ltd | Reduccion de la capa fludizada de finos de laterita con reduccion de gases generados in situ. |
-
2001
- 2001-01-12 DE DE10101157A patent/DE10101157A1/de not_active Withdrawn
- 2001-12-18 WO PCT/EP2001/014978 patent/WO2002055744A2/de not_active Ceased
-
2002
- 2002-01-04 US US10/037,482 patent/US20020124690A1/en not_active Abandoned
- 2002-01-11 AU AU10137/02A patent/AU1013702A/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080124253A1 (en) * | 2004-08-31 | 2008-05-29 | Achim Schmidt | Fluidized-Bed Reactor For The Thermal Treatment Of Fluidizable Substances In A Microwave-Heated Fluidized Bed |
| US20100263487A1 (en) * | 2007-12-12 | 2010-10-21 | Outotec Oyj | Process and plant for producing char and fuel gas |
| US9175226B2 (en) | 2007-12-12 | 2015-11-03 | Outotec Oyj | Process and plant for producing char and fuel gas |
| US9371487B2 (en) | 2007-12-12 | 2016-06-21 | Outotec Oyj | Process and plant for producing char and fuel gas |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002055744A2 (de) | 2002-07-18 |
| DE10101157A1 (de) | 2002-07-18 |
| WO2002055744A3 (de) | 2004-01-08 |
| AU1013702A (en) | 2002-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: MG TECHNOLOGIES AG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ORTH, ANDREAS;HIRSCH, MARTIN;WEBER, PETER;REEL/FRAME:012556/0671 Effective date: 20020124 |
|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |