JP2004218091A - 金属鉄の製法 - Google Patents
金属鉄の製法 Download PDFInfo
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- JP2004218091A JP2004218091A JP2004008307A JP2004008307A JP2004218091A JP 2004218091 A JP2004218091 A JP 2004218091A JP 2004008307 A JP2004008307 A JP 2004008307A JP 2004008307 A JP2004008307 A JP 2004008307A JP 2004218091 A JP2004218091 A JP 2004218091A
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- hearth
- renewed
- supplied
- iron
- metallic iron
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 245
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 100
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 116
- 239000002893 slag Substances 0.000 claims abstract description 58
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000002844 melting Methods 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 230000009467 reduction Effects 0.000 claims abstract description 31
- 230000008018 melting Effects 0.000 claims description 48
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 20
- 239000003575 carbonaceous material Substances 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000395 magnesium oxide Substances 0.000 claims description 10
- 230000006866 deterioration Effects 0.000 claims description 9
- 238000005245 sintering Methods 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 58
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 24
- 238000007599 discharging Methods 0.000 description 18
- 238000005520 cutting process Methods 0.000 description 13
- 239000003245 coal Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 12
- 239000000843 powder Substances 0.000 description 11
- 230000008595 infiltration Effects 0.000 description 10
- 238000001764 infiltration Methods 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- -1 silica compound Chemical class 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000003476 subbituminous coal Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type 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
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0066—Preliminary conditioning of the solid carbonaceous 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
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
- C21B13/105—Rotary hearth-type 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
-
- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
- C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Tunnel Furnaces (AREA)
Abstract
【解決手段】 本発明は、原料塊成物の供給に先立って予め移動炉床上に粉粒状炉床材を層状に敷詰めて更新可能な更新炉床を形成しておき、操業中に劣化した該更新炉床の一部または全部を取除いて新たな該炉床材を供給して更新炉床を新生し、該新生した炉床表面を均した後、前記混合物を供給して金属鉄を製造すること。
【選択図】 図7
Description
そこで、本発明では、更新炉床の新生後、原料塊成物の供給に先立って更新炉床均し手段12によって該更新炉床表面を均す(16c,17c)。
更新炉床均し手段12は更新炉床表面を均す効果を有するものであれば特に限定されず、例えば交差方向に設置された一連の板状物であってもよいし、或いは排出装置6と同じものを用いてもよい。具体的な構成はUSP6,251,161号に開示されている内容を参照する。尚、本発明では更新炉床均し手段12として該USP6,251,161号に開示されている排出装置を用いた場合である。この装置では供給された炉床材を更新炉床移動方向と交差する方向に移動させて更新炉床上の凹部を補充している。
また更新炉床均し手段12の先端部分と新生した更新炉床との間隔を調整することにより該更新炉床の厚さを調整できる。
本発明では排出装置6の具体的な構成は特に限定されず、任意の除去手段(図示はしない)を用いればよい。例えばスクレーパー方式、スクリュー方式の様なものを用いてもよい。
鉄鉱石と石炭とを含む塊成物(直径約16mm)を図1に示す移動床型還元溶融炉に装入し金属鉄の製造を行なう。炉内雰囲気温度を約1350℃に制御して金属化率が約90%以上となるまで固体還元し、その後溶融ゾーン(雰囲気温度を1450℃)にて溶融を行ない、生成した金属鉄と副生スラグを約1000℃まで冷却して凝固させた後、排出装置によって炉外へ排出する(原料装入から排出まで約12分である。)。得られた粒状金属鉄(直径約10mm)は高い鉄品位(鉄分約97%,炭素約3%)を有する。
更新炉床均し手段12によって更新炉床表面を均さない以外は上記実施例と同様にして金属鉄の製造を行ない、操業状態を調べる。更新炉床表面には凹凸が生じ、更新炉床がスラグ浸潤・侵食を受け易く、上記実施例1の場合よりも金属鉄の製造効率が低く、またメンテンス性も低いため、更新炉床の補修を頻繁に行なう必要がある。
Claims (22)
- 炭素質還元剤と酸化鉄とを含む混合物を、移動床型還元溶融炉の移動炉床上に供給して加熱し、酸化鉄を還元溶融した後、得られる金属鉄を冷却してから前記炉外へ排出して回収する金属鉄の製法であって、該混合物の供給に先立って予め該移動炉床上に粉粒状炉床材を層状に敷き詰めて更新可能な更新炉床を形成しておき、操業中に劣化した該更新炉床の一部または全部を取除いて新たな該炉床材を供給して更新炉床を新生し、該新生した炉床表面を均した後、前記混合物を供給して金属鉄を製造することを特徴とする金属鉄の製法。
- 前記劣化は更新炉床の固化を含むものである請求項1に記載の製法。
- 炭素質還元剤と酸化鉄とを含む混合物を、移動床型還元溶融炉の炉床上に供給して加熱し、酸化鉄を還元溶融した後、得られる金属鉄を冷却してから前記炉外へ排出して回収する金属鉄の製法であって、該混合物の供給に先立って予め該炉床上に炉床材を層状に敷き詰めて更新可能な更新炉床を形成しておき、操業中に劣化した該更新炉床の表面に該炉床材を供給することにより、該炉床表面を新生し、該新生した炉床表面を均した後、前記混合物を供給して金属鉄を製造することを特徴とする金属鉄の製法。
- 前記劣化した更新炉床の表面の窪みを前記炉床材で充填する様に前記炉床材を供給する請求項3に記載の製法。
- 前記均しは、供給された炉床材を移動床の移動方向と交差する方向に移動させることを含んで行なう請求項1〜3に記載の製法。
- 前記移動に伴って排出し残された金属鉄および/またはスラグを該移動方向に排出する請求項5に記載の製法。
- 前記更新炉床の厚さを調整する請求項1〜6のいずれかに記載の製法。
- 前記更新炉床を均した後、前記混合物を供給する前に前記炉床材を更に補給して更新を完了する請求項1〜7のいずれかに記載の製法。
- 前記炉床材が炭素物質を含むものである請求項1〜8のいずれかに記載の製法。
- 前記炉床材が生成スラグに対して耐食性を有する高融点物質を含むものである請求項1〜8のいずれかに記載の製法。
- 前記高融点物質がアルミナおよび/またはマグネシアを含む酸化物、あるいは炭化珪素を含むものである請求項10に記載の製法。
- 前記炉床材が更に炭素質物質を含むものである請求項10または11に記載の製法。
- 前記炉床材が更にCaO源、或いはMgO源となる物質を含むものである請求項9〜12のいずれかに記載の製法。
- 前記炉床材が更に焼結促進剤を含むものである請求項9〜13のいずれかに記載の製法。
- 前記冷却は、冷媒を供給するか、または前記炉床材を供給して行なう請求項1〜14のいずれかに記載の製法。
- 前記劣化した更新炉床の除去に際しては該更新炉床を軟化させてから除去する請求項1に記載の製法。
- 前記更新の完了した更新炉床上に、前記混合物の供給の前に粉状炭素質物質を含む雰囲気調整剤を層状に敷き詰めてから前記混合物を供給する請求項1〜16のいずれかに記載の製法。
- 前記雰囲気調整剤が、CaO源、或いはMgO源となる物質を含むものである請求項17に記載の製法。
- 前記雰囲気調整剤中に、前記炉床材を配合しておく請求項17に記載の製法。
- 前記雰囲気調整剤を2回以上に分けて供給する請求項17〜19のいずれかに記載の製法。
- 移動炉床と更新炉床の間に、或いは前記更新炉床が複数層形成されたときの各層に粉状炭素質物質を含む層が存在する請求項1〜20のいずれかに記載の製法。
- 炉床表面の均しに際し、該炉床材を圧密する請求項1〜21のいずれかに記載の製法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44036903P | 2003-01-16 | 2003-01-16 |
Publications (2)
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JP2004218091A true JP2004218091A (ja) | 2004-08-05 |
JP4181056B2 JP4181056B2 (ja) | 2008-11-12 |
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JP2004008307A Expired - Lifetime JP4181056B2 (ja) | 2003-01-16 | 2004-01-15 | 金属鉄の製法 |
Country Status (12)
Country | Link |
---|---|
US (2) | US20060096675A1 (ja) |
EP (1) | EP1584693B1 (ja) |
JP (1) | JP4181056B2 (ja) |
KR (1) | KR20050092114A (ja) |
CN (1) | CN1738915B (ja) |
AT (1) | ATE557107T1 (ja) |
AU (1) | AU2004204310B2 (ja) |
CA (1) | CA2512654C (ja) |
ES (1) | ES2384709T3 (ja) |
RU (1) | RU2302470C2 (ja) |
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Families Citing this family (10)
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JP4266284B2 (ja) * | 2001-07-12 | 2009-05-20 | 株式会社神戸製鋼所 | 金属鉄の製法 |
JP2003034813A (ja) * | 2001-07-24 | 2003-02-07 | Kobe Steel Ltd | 粒状金属鉄とスラグの分離促進方法 |
JP4307849B2 (ja) * | 2003-01-07 | 2009-08-05 | 株式会社神戸製鋼所 | クロム含有原料の還元方法 |
CA2675311A1 (en) * | 2007-01-12 | 2008-07-24 | Nu-Iron Technology, Llc | System and method for cooling and removing iron from a hearth |
ES2739704T3 (es) * | 2010-03-02 | 2020-02-03 | Giulio Grossi | Aparato y método para producir hierro de reducción directa |
CN105121669A (zh) | 2013-03-06 | 2015-12-02 | 米德雷克斯技术公司 | 还原含铬原材料的方法和系统 |
JP6403268B2 (ja) * | 2015-02-03 | 2018-10-10 | 株式会社神戸製鋼所 | 還元鉄の製造方法及び装置 |
US20200318219A1 (en) * | 2019-04-04 | 2020-10-08 | Iowa State University Research Foundation, Inc. | Mechanochemical recovery of Co, Li and other constituents from spent lithium-ion batteries |
US11965221B2 (en) * | 2020-03-24 | 2024-04-23 | Midrex Technologies, Inc. | Method and system for heating direct reduced iron (DRI) between a DRI source and processing equipment for the DRI |
CN113832341A (zh) * | 2021-09-24 | 2021-12-24 | 重庆赛迪热工环保工程技术有限公司 | 一种用于清除炉底结料层的方法和装置 |
Family Cites Families (21)
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BE1010261A3 (fr) * | 1996-03-07 | 1998-04-07 | Centre Rech Metallurgique | Dispositif pour deposer en continu sur un support mobile au moins deux matieres fines en couches superposees alternees. |
US6506231B2 (en) * | 1996-03-15 | 2003-01-14 | Kabushiki Kaisha Kobe Seiko Sho | Method and apparatus for making metallic iron |
EA001158B1 (ru) * | 1996-03-15 | 2000-10-30 | Кабусики Кайся Кобе Сейко Сё | Способ и устройство для получения металлического железа |
WO1998046953A1 (de) * | 1997-04-11 | 1998-10-22 | Paul Wurth S.A. | Vorrichtung zum chargieren eines drehherdofens |
JP4159634B2 (ja) * | 1997-10-23 | 2008-10-01 | 株式会社神戸製鋼所 | 金属鉄の製法および装置 |
ZA995438B (en) * | 1998-08-27 | 2000-03-20 | Kobe Steel Ltd | Method for operating moving hearth reducing furnace. |
US6413295B2 (en) * | 1998-11-12 | 2002-07-02 | Midrex International B.V. Rotterdam, Zurich Branch | Iron production method of operation in a rotary hearth furnace and improved furnace apparatus |
US6126718A (en) * | 1999-02-03 | 2000-10-03 | Kawasaki Steel Corporation | Method of producing a reduced metal, and traveling hearth furnace for producing same |
CN1229505C (zh) * | 2000-03-30 | 2005-11-30 | 米德雷克斯国际公司苏黎世分公司 | 生产金属铁的方法及原料供给装置 |
JP2001288504A (ja) * | 2000-03-31 | 2001-10-19 | Midrex Internatl Bv | 溶融金属鉄の製造方法 |
TW562860B (en) * | 2000-04-10 | 2003-11-21 | Kobe Steel Ltd | Method for producing reduced iron |
JP2001342509A (ja) * | 2000-06-02 | 2001-12-14 | Kobe Steel Ltd | 金属鉄の製造方法および装置 |
JP4757982B2 (ja) * | 2000-06-28 | 2011-08-24 | 株式会社神戸製鋼所 | 粒状金属鉄の歩留まり向上方法 |
JP4330257B2 (ja) * | 2000-08-09 | 2009-09-16 | 株式会社神戸製鋼所 | 金属鉄の製法 |
US20020053307A1 (en) * | 2000-10-31 | 2002-05-09 | Natsuo Ishiwata | Method for discharging reduced product from a moveable-hearth furnace and a discharging device |
JP3756754B2 (ja) * | 2000-11-27 | 2006-03-15 | 新日本製鐵株式会社 | 還元鉄回転炉床の補修方法 |
US6749664B1 (en) * | 2001-01-26 | 2004-06-15 | Midrex International, B.V., Rotterdam, Zurich Branch | Furnace hearth for improved molten iron production and method of operation |
US6648942B2 (en) * | 2001-01-26 | 2003-11-18 | Midrex International B.V. Rotterdam, Zurich Branch | Method of direct iron-making / steel-making via gas or coal-based direct reduction and apparatus |
JP4266284B2 (ja) * | 2001-07-12 | 2009-05-20 | 株式会社神戸製鋼所 | 金属鉄の製法 |
JP4267843B2 (ja) * | 2001-08-31 | 2009-05-27 | 株式会社神戸製鋼所 | 金属鉄の製法 |
JP4256645B2 (ja) * | 2001-11-12 | 2009-04-22 | 株式会社神戸製鋼所 | 金属鉄の製法 |
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US7846235B2 (en) | 2010-12-07 |
US20060096675A1 (en) | 2006-05-11 |
RU2302470C2 (ru) | 2007-07-10 |
JP4181056B2 (ja) | 2008-11-12 |
CN1738915B (zh) | 2010-05-26 |
EP1584693A1 (en) | 2005-10-12 |
AU2004204310B2 (en) | 2009-10-29 |
ES2384709T3 (es) | 2012-07-11 |
TW200424319A (en) | 2004-11-16 |
KR20050092114A (ko) | 2005-09-20 |
RU2005125915A (ru) | 2006-02-20 |
WO2004063398A1 (ja) | 2004-07-29 |
US20090183600A1 (en) | 2009-07-23 |
EP1584693B1 (en) | 2012-05-09 |
CA2512654C (en) | 2011-11-29 |
ATE557107T1 (de) | 2012-05-15 |
AU2004204310A1 (en) | 2004-07-29 |
EP1584693A4 (en) | 2008-04-02 |
CA2512654A1 (en) | 2004-07-29 |
TWI282818B (en) | 2007-06-21 |
CN1738915A (zh) | 2006-02-22 |
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