JP6548707B2 - 溶銑の製造装置及び溶銑の製造方法 - Google Patents
溶銑の製造装置及び溶銑の製造方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/008—Use of special additives or fluxing agents
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- 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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/12—Making spongy iron or liquid steel, by direct processes in electric furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/005—Preliminary treatment of scrap
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- 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
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
- F27D13/002—Preheating scrap
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/80—Interaction of exhaust gases produced during the manufacture of iron or steel with other processes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2200/00—Recycling of non-gaseous waste material
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- 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
- Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
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- 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
- Y02P10/146—Perfluorocarbons [PFC]; Hydrofluorocarbons [HFC]; Sulfur hexafluoride [SF6]
-
- 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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- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
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Description
本発明の他の目的は、石炭資源の使用量を低減することができる溶銑の製造装置及び溶銑の製造方法を提供することである。
前記溶銑の製造装置は、前記反応炉と前記予熱炉との間に配設され、前記スクラップを塊成化又は破砕し得る熱間加工装置を更に備えていてもよい。
前記二酸化炭素除去器を通過した排ガスのうちの少なくとも一部を供給するように、前記二酸化炭素除去器は、前記反応炉又は前記予熱炉のうちの少なくともいずれか一方と連通されてもよい。
前記スクラップを予熱する過程は、前記排ガスに含有されている一酸化炭素及び水素が前記含酸素ガスと二次燃焼を引き起こして発生する反応熱を用いて行ってもよい。
前記溶銑の製造方法は、前記スクラップを予熱する過程後に、前記予熱炉から発生する排ガスから二酸化炭素を取り除く過程を更に含んでいてもよい。
前記溶銑の製造方法は、前記予熱されたスクラップを前記反応炉に投入する過程を含んでいてもよい。
図面は、各種の構成要素を明確に表現するために、大きさが誇張又は拡大されて表現されている。なお、図中、同じ符号は同じ構成要素を指し示す。
図1において、実線は原料の移動経路を示し、点線はガスの移動経路を示す。
図1に示すように、本発明の溶銑の製造装置は、含鉄原料を溶融させる反応炉100と、反応炉100から発生する排ガスを用いて含鉄原料のうちの一部を予熱する予熱炉200と、予熱炉200に供給された排ガスを二次燃焼させて熱源を発生させるための含酸素ガスを供給する燃焼装置300と、を備えていてもよい。
まず、反応炉100に溶銑を製造するための原料を投入する。このとき、原料は、鉄鉱石、還元鉄、焼結鉱などの含鉄原料と、コークス、石炭などの還元剤と、を含んでいてもよく、必要に応じて、石灰石などの副原料を含んでいてもよい。なお、最初に反応炉100に原料を投入するときには、未予熱のスクラップを更に投入してもよい。
スクラップを、予熱炉200において予熱した後に反応炉100に投入することによって溶銑が製造可能である。或いは、スクラップは、予熱炉200において予熱した後に熱間加工装置500において所定の形状に成形又は加工して反応炉100に投入されてもよい。
110 吹込みノズル
200 予熱炉
300 燃焼装置
400 二酸化炭素除去器
500 熱間加工装置
Claims (9)
- 鉄鉱石を含む原料を溶解し得る空間が形成された反応炉と、
前記反応炉から発生する排ガスを用いてスクラップを予熱し得る空間が形成され、前記反応炉と連通するように配設された予熱炉と、
前記予熱炉に含酸素ガスを吹き込むように前記予熱炉に配設された燃焼装置と、を備え、
前記反応炉と前記予熱炉との間に配設され、前記スクラップを熱間状態で塊成化又は破砕し得る熱間加工装置を更に備えることを特徴とする溶銑の製造装置。 - 前記反応炉は、含酸素ガス及び微粉炭を供給し得る吹込みノズルを更に備えることを特徴とする請求項1に記載の溶銑の製造装置。
- 前記予熱炉から発生する排ガスに含有される二酸化炭素を取り除き得る二酸化炭素除去器を更に備えることを特徴とする請求項2に記載の溶銑の製造装置。
- 前記二酸化炭素除去器を通過した排ガスのうちの少なくとも一部を供給するように、前記二酸化炭素除去器は、前記反応炉又は前記予熱炉のうちの少なくともいずれか一方と連通されることを特徴とする請求項3に記載の溶銑の製造装置。
- 反応炉において鉄鉱石を溶解させて溶銑を製造する過程と、
予熱炉にスクラップを装入する過程と、
前記溶銑を製造する過程において発生する排ガスを前記予熱炉に供給する過程と、
前記予熱炉に含酸素ガスを供給して前記排ガスを二次燃焼させてスクラップを予熱する過程と、
前記予熱されたスクラップを熱間状態で加工する過程と、
前記加工されたスクラップを熱間状態で前記反応炉に投入する過程と、を含むことを特徴とする溶銑の製造方法。 - 前記溶銑を製造する過程は、
前記反応炉に純酸素を吹き込む過程を更に含むことを特徴とする請求項5に記載の溶銑の製造方法。 - 前記スクラップを予熱する過程は、
前記排ガスに含有されている一酸化炭素及び水素が前記含酸素ガスと二次燃焼を引き起こして発生する反応熱を用いて行うことを特徴とする請求項5に記載の溶銑の製造方法。 - 前記スクラップを予熱する過程後に、
前記予熱炉から発生する排ガスから二酸化炭素を取り除く過程を更に含むことを特徴とする請求項7に記載の溶銑の製造方法。 - 前記二酸化炭素の取り除かれた排ガスを、前記反応炉又は前記予熱炉のうちの少なくともいずれか一方に供給することを特徴とする請求項8に記載の溶銑の製造方法。
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KR1020160176743A KR101998733B1 (ko) | 2016-12-22 | 2016-12-22 | 용선제조장치 및 용선제조방법 |
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KR102115888B1 (ko) * | 2018-11-16 | 2020-06-05 | 주식회사 포스코 | 용선 제조방법 및 그 장치 |
JP7463174B2 (ja) | 2020-04-06 | 2024-04-08 | 三菱重工業株式会社 | 固体炭素生成装置および固体炭素生成方法 |
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JPS5121931B1 (ja) * | 1964-02-27 | 1976-07-06 | ||
JPH02159311A (ja) * | 1988-12-09 | 1990-06-19 | Godo Seitetsu Kk | スクラップの溶解を兼ねた混銑炉型鉄浴式溶融還元製鉄法およびそのための製鉄設備 |
JP2790367B2 (ja) * | 1990-09-27 | 1998-08-27 | 新日本製鐵株式会社 | 含鉄冷材溶解法 |
US5466278A (en) * | 1990-12-11 | 1995-11-14 | Metallgesellschaft Aktiengesellschaft | Process for the manufacture of steel |
JPH0535842U (ja) * | 1991-10-07 | 1993-05-14 | 新日本製鐵株式会社 | 転炉型冶金反応炉 |
JPH06212288A (ja) * | 1993-01-19 | 1994-08-02 | Nippon Steel Corp | 鉄スクラップの予熱方法及び予熱した鉄スクラップの精錬方法 |
JPH0821691A (ja) | 1994-07-07 | 1996-01-23 | Nkk Corp | 電気炉による鉄スクラップの予熱溶解方法 |
JPH10219327A (ja) * | 1997-01-31 | 1998-08-18 | Nippon Steel Corp | 鉄原料の溶融還元方法及び溶融還元炉 |
JP2001311589A (ja) * | 2000-04-28 | 2001-11-09 | Nippon Steel Corp | 排ガス中有害物質の低減、除去方法 |
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CN101575653A (zh) * | 2009-06-17 | 2009-11-11 | 北京大学 | 分离二氧化碳改善高炉煤气质能的方法和装置 |
JP2012007213A (ja) * | 2010-06-25 | 2012-01-12 | Mitsubishi Heavy Ind Ltd | 直接還元製鉄法およびそのための還元ガス製造装置 |
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