US20090249922A1 - Process for the production of steel using a locally produced hydrogen as the reducing agent - Google Patents
Process for the production of steel using a locally produced hydrogen as the reducing agent Download PDFInfo
- Publication number
- US20090249922A1 US20090249922A1 US12/012,834 US1283408A US2009249922A1 US 20090249922 A1 US20090249922 A1 US 20090249922A1 US 1283408 A US1283408 A US 1283408A US 2009249922 A1 US2009249922 A1 US 2009249922A1
- Authority
- US
- United States
- Prior art keywords
- reducing agent
- steel
- hydrogen
- pat
- produced
- 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
- 239000001257 hydrogen Substances 0.000 title claims abstract description 27
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 6
- 238000009628 steelmaking Methods 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 28
- 229910052742 iron Inorganic materials 0.000 abstract description 14
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 description 9
- 239000012141 concentrate Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001387976 Pera Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 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
- C21B13/0073—Selection or treatment of the reducing gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
-
- 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
-
- 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 new process for producing steel from iron ore using a locally produced hydrogen, produced by electrolysing water using electricity from a wind power generator on the mine site, as the reducing agent.
- the herein presented process involves the reduction of iron ore concentrate, in a rotary oven, using heated hydrogen as the reducing agent, said hydrogen being produced either at the mine site or some other advantageous location and being produced through the electrolysis of water, using power generated by a wind power generator.
- the process first involves the mining and benification of the iron ore to a concentrate grade of from 69 to 73% iron (Fe).
- the iron ore concentrate is first stored in water proof silos and later fed to a rotary oven as needed.
- Wind power generators are then used to produce the electric energy needed to electrolyze the water into oxygen and hydrogen.
- the hydrogen is first cooled and condensed into liquid hydrogen before it is placed into storage tanks.
- the hydrogen is bled from the storage tanks, heated to about 1300 degrees C. and then fed into the rotary oven to reduce the iron ore concentrate.
- the finished steel product in the form of sponge iron is first cooled and then placed in water tight storage facilities for storage.
- FIG. 1 A first figure.
- the Bristlecone process presents a new and very economic process for producing high quality steel from iron ore concentrate using hydrogen as the reducing agent, said hydrogen being produced on or near the mine site by using electric power produced from a wind power generator, to electrolyze water to hydrogen and oxygen.
- Iron ore (magnetite or hematite or any other typical iron ore) is first mined ( 1 , 1 ) and then transported to the concentrator ( 1 , 2 ) where it is cleaned and concentrated to a grade of approximately 73% Fe (using magnetite). The concentrate is then fed into a rotary oven ( 1 , 3 ) or other applicable oven type, where it is reduced.
- Wind power ( 1 , 4 ) is used to electrolyze water in an electrolysis unit ( 1 , 5 ) after which the hydrogen is moved to a cooling and condensing unit ( 1 , 6 ) where it is cooled and condensed for storage, after which it is moved to a storage tank ( 1 , 7 ).
- Hydrogen is taken from the storage tank ( 1 , 7 ) as needed and moved to the heating unit ( 1 , 8 ) where it is heated to about 1300 degrees C., after which it is moved to the rotary oven ( 1 , 3 ) to be used as the reducing agent to produce high grade steel in a sponge iron (sponge steel) form.
- the finished product is then cooled in the cooling unit ( 1 , 9 ) and then placed in a water proof storage unit ( 1 , 10 ) for storage.
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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)
- Wind Motors (AREA)
Abstract
A manufacturing plant and process for producing steel from iron ore, at the iron ore mine, using a locally produced hydrogen as the reducing agent, where the hydrogen is produced through the electrolysis of water, using electricity generated by a wind power generator, thereby producing the cheapest possible reducing agent, on the mine site and producing steel with only oxygen and water vapor as the effluents from the process.
Description
- 1. Field of the Invention
- This invention relates to a new process for producing steel from iron ore using a locally produced hydrogen, produced by electrolysing water using electricity from a wind power generator on the mine site, as the reducing agent.
- 2. Brief Description of the Prior Art
- The production of iron and steel, using carbon in the form of coal or coke as the reducing agent, has been known for some 2000 years. The invention of fluidized bed reactors and rotary ovens in the twentieth century it became possible to utilize natural gas and eventually hydrogen as the reducing agent. The use of hydrogen was always limited to locations where a source of inexpensive hydrogen all ready existed.
- The steel making industries developed over time at places near the sources of reducing agent, or in other words, at or near the coal mines.
- The production of steel using hydrogen produced from the electrolysis of water utilizing power from a wind power generator has not been known.
- The herein presented process involves the reduction of iron ore concentrate, in a rotary oven, using heated hydrogen as the reducing agent, said hydrogen being produced either at the mine site or some other advantageous location and being produced through the electrolysis of water, using power generated by a wind power generator.
- Depending on the location of the site and the availability of sufficient water and wind energy, this process could possibly produce the cheapest reducing agent and the cheapest steel product in the world. Most of the transportation used prior to end product would be eliminated.
- The process first involves the mining and benification of the iron ore to a concentrate grade of from 69 to 73% iron (Fe). The iron ore concentrate is first stored in water proof silos and later fed to a rotary oven as needed.
- Wind power generators are then used to produce the electric energy needed to electrolyze the water into oxygen and hydrogen. The hydrogen is first cooled and condensed into liquid hydrogen before it is placed into storage tanks.
- The condensing of the hydrogen and storing it in tanks is a necessary step needed to give an even, constant and continuous process. Due to the inconsistency of wind energy, the steel making process would be uneven and inconsistent and hard to control due to the lack of a consistent supply of hydrogen. Another option would be the use of commercially available power during periods of low wind but this would undoubtedly be more expensive. Commercial power would however be kept available for emergencies.
- The hydrogen is bled from the storage tanks, heated to about 1300 degrees C. and then fed into the rotary oven to reduce the iron ore concentrate.
- After a processing time of about 2 hours the finished steel product, in the form of sponge iron is first cooled and then placed in water tight storage facilities for storage.
- The effluents from the process, oxygen and water vapor, are released into the atmosphere after filtration to remove dust particles.
- The application presents:
-
- A process for producing steel in which hydrogen, produced through the electrolysis of water utilizing electric poser produced by a wind power generator, as the reducing agent.
- A process in which the reducing agent (hydrogen) may be produced at the mine site.
- A process in which the effluents from the steel making process are oxygen and water vapor.
- A process in which the reducing agent (hydrogen) is cooled and condensed so that it may be stored, thereby giving a potential for continuos operation in spite of inconsistent winds.
- A process in which the desired quality of the steel may be acquired using additives during the smelting and forming stages.
- The Bristlecone process presents a new and very economic process for producing high quality steel from iron ore concentrate using hydrogen as the reducing agent, said hydrogen being produced on or near the mine site by using electric power produced from a wind power generator, to electrolyze water to hydrogen and oxygen.
- Iron ore (magnetite or hematite or any other typical iron ore) is first mined (1,1) and then transported to the concentrator (1,2) where it is cleaned and concentrated to a grade of approximately 73% Fe (using magnetite). The concentrate is then fed into a rotary oven (1,3) or other applicable oven type, where it is reduced.
- Wind power (1,4) is used to electrolyze water in an electrolysis unit (1,5) after which the hydrogen is moved to a cooling and condensing unit (1,6) where it is cooled and condensed for storage, after which it is moved to a storage tank (1,7).
- Hydrogen is taken from the storage tank (1,7) as needed and moved to the heating unit (1,8) where it is heated to about 1300 degrees C., after which it is moved to the rotary oven (1,3) to be used as the reducing agent to produce high grade steel in a sponge iron (sponge steel) form.
- The finished product is then cooled in the cooling unit (1,9) and then placed in a water proof storage unit (1,10) for storage.
- The primary advantages of the Bristlecone Steel Process are:
- 1. It uses very inexpensive wind power to produce a very inexpensive reducing agent.
- 2. The reducing agent may be produced at the mine site, drastically reducing transportation costs.
- 3. The only effluents from the process are oxygen and water vapor.
-
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-
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Claims (5)
1. A process for producing steel in which hydrogen, produced through the electrolysis of water using electric power produced by a wind power generator, as the reducing agent.
2. A process according to claim 1 in which the reducing agent (hydrogen) may be produced at the mine site.
3. A process according to claim 1 in which the only effluents from the steel making process are oxygen and water vapor.
4. A process according to claim 1 in which the reducing agent (hydrogen) is cooled and condensed so that it can be stored, thereby giving a potential for continuous operation in spite of inconsistent winds.
5. A process according to claim 1 in which the desired quality of the steel may be acquired using additives during the smelting and forming stages. The primary product from the Bristlecone Steel Process being what is typically called a stainless melting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/012,834 US20090249922A1 (en) | 2008-04-02 | 2008-04-02 | Process for the production of steel using a locally produced hydrogen as the reducing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/012,834 US20090249922A1 (en) | 2008-04-02 | 2008-04-02 | Process for the production of steel using a locally produced hydrogen as the reducing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20090249922A1 true US20090249922A1 (en) | 2009-10-08 |
Family
ID=41132052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/012,834 Abandoned US20090249922A1 (en) | 2008-04-02 | 2008-04-02 | Process for the production of steel using a locally produced hydrogen as the reducing agent |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US20090249922A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011116141A3 (en) * | 2010-03-18 | 2012-01-12 | Sun Hydrogen, Inc. | Clean steel production process using carbon-free renewable energy source |
| GB2507246A (en) * | 2012-07-31 | 2014-04-30 | David Andrew Johnston | Direct reduction of iron using a carbon monoxide-hydrogen mixture derived from carbon dioxide and water |
| WO2014040989A3 (en) * | 2012-09-14 | 2014-06-12 | Voestalpine Stahl Gmbh | Method for producing steel using renewabel energy |
| US20160304978A1 (en) * | 2013-12-12 | 2016-10-20 | Thyssenkrupp Ag | Combined system for producing steel and method for operating the combined system |
| US20160348195A1 (en) * | 2013-12-12 | 2016-12-01 | Thyssenkrupp Ag | Plant combination for producing steel and method for operating the plant combination |
| WO2023276739A1 (en) * | 2021-06-30 | 2023-01-05 | Ｊｆｅ条鋼株式会社 | Method for producing steel product, steel product, and information processing method |
| WO2023151242A1 (en) * | 2022-02-11 | 2023-08-17 | 中钢设备有限公司 | Metal smelting device and steelmaking production line |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5454853A (en) * | 1994-06-10 | 1995-10-03 | Borealis Technical Incorporated Limited | Method for the production of steel |
-
2008
- 2008-04-02 US US12/012,834 patent/US20090249922A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5454853A (en) * | 1994-06-10 | 1995-10-03 | Borealis Technical Incorporated Limited | Method for the production of steel |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011116141A3 (en) * | 2010-03-18 | 2012-01-12 | Sun Hydrogen, Inc. | Clean steel production process using carbon-free renewable energy source |
| GB2507246A (en) * | 2012-07-31 | 2014-04-30 | David Andrew Johnston | Direct reduction of iron using a carbon monoxide-hydrogen mixture derived from carbon dioxide and water |
| JP2015534604A (en) * | 2012-09-14 | 2015-12-03 | フェストアルピネ シュタール ゲーエムベーハーＶｏｅｓｔａｌｐｉｎｅ Ｓｔａｈｌ Ｇｍｂｈ | Discontinuous energy storage method |
| WO2014040990A3 (en) * | 2012-09-14 | 2014-06-12 | Voestalpine Stahl Gmbh | Method for storing discontinuously obtained energy during the reduction of iron ore |
| CN104662177A (en) * | 2012-09-14 | 2015-05-27 | 沃斯特阿尔派因钢铁有限责任公司 | Method for storing discontinuously obtained energy |
| JP2015529751A (en) * | 2012-09-14 | 2015-10-08 | フェストアルピネ シュタール ゲーエムベーハーＶｏｅｓｔａｌｐｉｎｅ Ｓｔａｈｌ Ｇｍｂｈ | Steel manufacturing method |
| WO2014040989A3 (en) * | 2012-09-14 | 2014-06-12 | Voestalpine Stahl Gmbh | Method for producing steel using renewabel energy |
| EP2895631B1 (en) | 2012-09-14 | 2018-07-18 | Voestalpine Stahl GmbH | Method for producing steel with regenerative energy |
| EP2895630B1 (en) | 2012-09-14 | 2023-06-07 | Voestalpine Stahl GmbH | Method for storing discontinuously obtained energy in reduction process of iron ore |
| US20160304978A1 (en) * | 2013-12-12 | 2016-10-20 | Thyssenkrupp Ag | Combined system for producing steel and method for operating the combined system |
| US20160348195A1 (en) * | 2013-12-12 | 2016-12-01 | Thyssenkrupp Ag | Plant combination for producing steel and method for operating the plant combination |
| US10604816B2 (en) * | 2013-12-12 | 2020-03-31 | Thyssenkrupp Ag | Combined system for producing steel and method for operating the combined system |
| US10697030B2 (en) * | 2013-12-12 | 2020-06-30 | Thyssenkrupp Ag | Plant combination for producing steel and method for operating the plant combination |
| WO2023276739A1 (en) * | 2021-06-30 | 2023-01-05 | Ｊｆｅ条鋼株式会社 | Method for producing steel product, steel product, and information processing method |
| WO2023151242A1 (en) * | 2022-02-11 | 2023-08-17 | 中钢设备有限公司 | Metal smelting device and steelmaking production line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |