JP2006511708A - 流動還元炉の操業を改善した溶銑製造装置及びその溶銑製造方法 - Google Patents
流動還元炉の操業を改善した溶銑製造装置及びその溶銑製造方法 Download PDFInfo
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- 230000009467 reduction Effects 0.000 title claims abstract description 76
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 56
- 239000002184 metal Substances 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 55
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 135
- 239000001301 oxygen Substances 0.000 claims abstract description 135
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 135
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 121
- 229910052742 iron Inorganic materials 0.000 claims abstract description 58
- 239000007789 gas Substances 0.000 claims abstract description 48
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 34
- 239000003245 coal Substances 0.000 claims abstract description 30
- 230000005587 bubbling Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000012256 powdered iron Substances 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000010304 firing Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- 239000006185 dispersion Substances 0.000 claims description 15
- 238000002309 gasification Methods 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 abstract description 6
- 230000002776 aggregation Effects 0.000 abstract description 5
- 238000005054 agglomeration Methods 0.000 abstract description 3
- 238000006722 reduction reaction Methods 0.000 description 64
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000012495 reaction gas Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000012360 testing method Methods 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
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
- C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
-
- 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
- C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
- C21B13/002—Reduction of iron ores by passing through a heated column of carbon
-
- 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
-
- 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
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
- C21B13/143—Injection of partially reduced ore into a molten bath
-
- 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
- C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
-
- 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
- C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
- C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Furnace Details (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
本発明の第2実施例によって酸素バーナーで酸素を取入れると同時に、水分取入ノズルで水分を取入れて水分取入れ流量を調節して、これによる酸素火炎の温度を測定する摸写実験を行った。水分取入れ流量は流量計を使用して測定し、酸素火炎の温度は赤外線温度計を使用して測定した。
Claims (16)
- 粉状の鉄含有鉱石及び副原料を混合及び乾燥して鉄含有混合体を製造する段階と、
前記鉄含有混合体を順次に連結した一つ以上の気泡流動層を通過させながら還元及び焼成して還元体に変換する段階と、
前記還元体を溶融させる熱源である石炭充填層を形成する段階と、
前記還元体を前記石炭充填層に装入し、前記石炭充填層に酸素を取入れて溶銑を製造する段階と、
前記石炭充填層から排出される還元ガスを前記気泡流動層に供給する段階とを含み、
前記鉄含有混合体を還元体に変換する段階において、前記気泡流動層に還元ガスが流入される領域上に酸素を直接取入れて燃焼する、溶銑製造方法。 - 前記鉄含有混合体を還元体に変換する段階において、
前記酸素を取入れて燃焼するのと別途に水分を取入れて混合する、請求項1に記載の溶銑製造方法。 - 前記水分は工程水及びスチームのうちのいずれか一つ以上である、請求項1に記載の溶銑製造方法。
- 前記水分を300〜500Nm3/hrで取入れる、請求項2に記載の溶銑製造方法。
- 前記酸素は、前記流動還元炉の内部温度が650℃以上である場合に取入れて燃焼する、請求項1に記載の溶銑製造方法。
- 前記鉄含有混合体を還元体に変換する段階は、
前記鉄含有混合体を第1気泡流動層で予熱する第1段階と、
前記予熱した鉄含有混合体を第2気泡流動層で予備還元する第2段階と、
前記予備還元した鉄含有混合体を第3気泡流動層で最終還元して還元体に変換する第3段階とを含み、
前記第1段階及び前記第2段階では、前記酸素を直接取入れて燃焼する、請求項1に記載の溶銑製造方法。 - 前記第1段階乃至前記第3段階の各段階直前に酸素を取入れて燃焼する段階を含む、請求項6に記載の溶銑製造方法。
- 前記酸素を取入れて燃焼するのと別途に水分を取入れる、請求項7に記載の溶銑製造方法。
- 乾燥及び混合した鉄含有鉱石及び副原料を還元及び焼成して還元体に変換する一つ以上の流動還元炉と、
前記還元体を装入し、内部に酸素を取入れて溶銑を製造する溶融ガス化炉と、
前記溶融ガス化炉から排出される還元ガスを前記流動還元炉に供給する還元ガス供給管とを含み、
前記流動還元炉は、その下部に前記還元ガスが通過する分散板を含み、前記分散板の上部の外壁に酸素バーナーを備える溶銑製造装置。 - 前記酸素バーナーは、
長さ方向へ内部に冷却水が循環される第1部材と、
前記第1管と離隔されて長さ方向に前記第1部材で囲まれて内部に冷却水が循環され、一側端部に火炎感知機を備える第2部材とを含み、
前記第1部材及び前記第2部材の間に酸素が取入れられて燃焼され、前記流動還元炉側へ行くほど前記第1部材及び前記第2部材の間の距離が狭くなる、請求項9に記載の溶銑製造装置。 - 前記流動還元炉は、前記分散板の上部の外壁に設置され、前記酸素バーナーの周辺に位置する水分取入ノズルをさらに備える、請求項9に記載の溶銑製造装置。
- 前記水分取入ノズルは、その水分取入れ方向が前記酸素バーナーの長さ方向と4〜15゜の角度をなすように設置される、請求項11に記載の溶銑製造装置。
- 前記水分は工程水及びスチームのうちのいずれか一つ以上である、請求項12に記載の溶銑製造装置。
- 前記水分を噴霧して300〜500Nm3/hrで取入れる、請求項12に記載の溶銑製造装置。
- 前記流動還元炉は、
前記鉄含有混合体を予熱する予熱炉と、
前記予熱炉と連結されて前記予熱した鉄含有混合体を予備還元する予備還元炉と、
前記予備還元炉と連結されて前記予備還元した鉄含有混合体を最終還元して還元体に変換する最終還元炉とを含み、
前記予熱炉及び前記予備還元炉に前記酸素バーナーを備える、請求項9に記載の溶銑製造装置。 - 前記流動還元炉は、前記分散板の上部の外壁に設置され、前記酸素バーナーの周辺に位置する水分取入ノズルをさらに備える、請求項15に記載の溶銑製造装置。
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KR20020082634 | 2002-12-23 | ||
PCT/KR2003/002815 WO2004057038A1 (en) | 2002-12-23 | 2003-12-23 | An apparatus for manufacturing moltens irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same |
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JP2006511708A true JP2006511708A (ja) | 2006-04-06 |
JP4191681B2 JP4191681B2 (ja) | 2008-12-03 |
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Country Status (14)
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US (1) | US7713329B2 (ja) |
EP (1) | EP1576198B1 (ja) |
JP (1) | JP4191681B2 (ja) |
KR (1) | KR101055846B1 (ja) |
CN (1) | CN1754003B (ja) |
AT (1) | ATE403014T1 (ja) |
AU (1) | AU2003289518B2 (ja) |
BR (1) | BR0317226B8 (ja) |
CA (1) | CA2511731C (ja) |
DE (1) | DE60322585D1 (ja) |
RU (1) | RU2299245C2 (ja) |
UA (1) | UA77355C2 (ja) |
WO (1) | WO2004057038A1 (ja) |
ZA (1) | ZA200505052B (ja) |
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JPH11131118A (ja) * | 1997-10-31 | 1999-05-18 | Nkk Corp | 予備還元炉 |
CA2281595A1 (en) * | 1997-12-20 | 1999-07-01 | Min Young Cho | Apparatus for manufacturing molten pig iron and reduced iron by utilizing fluidized bed, and method therefor |
TW419574B (en) * | 1998-06-16 | 2001-01-21 | Mitsubishi Heavy Ind Ltd | Operating method of flow-level incinerator and the incinerator |
US6085538A (en) | 1998-08-26 | 2000-07-11 | Carrier Corporation | Control box door/fairing for front grille of an air conditioner |
LU90291B1 (de) | 1998-09-23 | 2000-03-24 | Wurth Paul Sa | Verfahren zum herstellen von direkt reduziertem Metall in einem Etagenofen |
KR100321050B1 (ko) * | 1998-12-09 | 2002-04-17 | 이구택 | 분철광석의유동층식예비환원장치및이를이용한예비환원방법 |
AT409387B (de) * | 2000-06-28 | 2002-07-25 | Voest Alpine Ind Anlagen | Verfahren und anlage zur gasreduktion von teilchenförmigen oxidhältigen erzen |
CN2433260Y (zh) | 2000-07-21 | 2001-06-06 | 中国科学院化工冶金研究所 | 多级流化移动床熔态还原炼铁炉 |
AT410803B (de) | 2001-09-27 | 2003-08-25 | Voest Alpine Ind Anlagen | Verfahren zur reduktion von metallhältigem, insbesondere eisenerzhältigem, teilchenförmigem material |
-
2003
- 2003-12-23 WO PCT/KR2003/002815 patent/WO2004057038A1/en active Application Filing
- 2003-12-23 DE DE60322585T patent/DE60322585D1/de not_active Expired - Lifetime
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- 2003-12-23 KR KR1020057011329A patent/KR101055846B1/ko active IP Right Grant
- 2003-12-23 BR BRPI0317226-0A patent/BR0317226B8/pt not_active IP Right Cessation
- 2003-12-23 UA UAA200505486A patent/UA77355C2/uk unknown
- 2003-12-23 RU RU2005118994/02A patent/RU2299245C2/ru not_active IP Right Cessation
- 2003-12-23 AT AT03778993T patent/ATE403014T1/de active
- 2003-12-23 EP EP03778993A patent/EP1576198B1/en not_active Expired - Lifetime
- 2003-12-23 JP JP2004562101A patent/JP4191681B2/ja not_active Expired - Fee Related
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- 2003-12-23 CN CN2003801074464A patent/CN1754003B/zh not_active Expired - Fee Related
- 2003-12-23 AU AU2003289518A patent/AU2003289518B2/en not_active Ceased
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2005
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107091569A (zh) * | 2017-03-24 | 2017-08-25 | 石家庄新华能源环保科技股份有限公司 | 回转窑以及利用该回转窑生产金属氢化物的多联产系统 |
Also Published As
Publication number | Publication date |
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ZA200505052B (en) | 2006-10-25 |
US20060119023A1 (en) | 2006-06-08 |
ATE403014T1 (de) | 2008-08-15 |
CN1754003B (zh) | 2012-05-30 |
EP1576198A1 (en) | 2005-09-21 |
US7713329B2 (en) | 2010-05-11 |
KR101055846B1 (ko) | 2011-08-09 |
BR0317226A (pt) | 2005-11-01 |
JP4191681B2 (ja) | 2008-12-03 |
BR0317226B8 (pt) | 2013-02-19 |
AU2003289518A1 (en) | 2004-07-14 |
CN1754003A (zh) | 2006-03-29 |
KR20050089836A (ko) | 2005-09-08 |
WO2004057038A1 (en) | 2004-07-08 |
RU2005118994A (ru) | 2006-02-10 |
RU2299245C2 (ru) | 2007-05-20 |
CA2511731A1 (en) | 2004-07-08 |
BR0317226B1 (pt) | 2013-01-08 |
EP1576198B1 (en) | 2008-07-30 |
DE60322585D1 (de) | 2008-09-11 |
AU2003289518B2 (en) | 2007-09-06 |
CA2511731C (en) | 2012-08-21 |
EP1576198A4 (en) | 2006-09-20 |
UA77355C2 (en) | 2006-11-15 |
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