JP2011006745A - 溶融還元方法 - Google Patents
溶融還元方法 Download PDFInfo
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- JP2011006745A JP2011006745A JP2009151932A JP2009151932A JP2011006745A JP 2011006745 A JP2011006745 A JP 2011006745A JP 2009151932 A JP2009151932 A JP 2009151932A JP 2009151932 A JP2009151932 A JP 2009151932A JP 2011006745 A JP2011006745 A JP 2011006745A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 198
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 74
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000000463 material Substances 0.000 claims abstract description 71
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 69
- 239000001257 hydrogen Substances 0.000 claims abstract description 67
- 230000001603 reducing effect Effects 0.000 claims abstract description 45
- 239000000446 fuel Substances 0.000 claims abstract description 33
- 239000000428 dust Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims description 126
- 238000003723 Smelting Methods 0.000 claims description 122
- 239000000126 substance Substances 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 40
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 20
- 239000001569 carbon dioxide Substances 0.000 abstract description 20
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052804 chromium Inorganic materials 0.000 abstract description 13
- 239000011651 chromium Substances 0.000 abstract description 13
- 239000002737 fuel gas Substances 0.000 abstract description 7
- 239000002912 waste gas Substances 0.000 abstract 2
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 121
- 238000007664 blowing Methods 0.000 description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 26
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 12
- 239000003830 anthracite Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 239000002893 slag Substances 0.000 description 11
- 125000004432 carbon atom Chemical group C* 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000001294 propane Substances 0.000 description 10
- 238000011084 recovery Methods 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 229910002091 carbon monoxide Inorganic materials 0.000 description 8
- 239000000571 coke Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 8
- 125000004429 atom Chemical group 0.000 description 6
- 239000003245 coal Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000003575 carbonaceous material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002678 semianthracite Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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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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- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
【解決手段】 溶融還元炉1内に鉱石22を燃料及び還元材とともに装入し、酸素ガスを供給することにより鉱石を加熱・溶融して還元して溶湯20を溶製する溶融還元方法において、燃料及び還元材として、固定炭素量が85質量%以上または揮発性成分量が10質量%以下である炭素含有物質と、水素含有物質と、を併用し、炉内に供給される炭素含有物質と水素含有物質とに含有される合計の水素と炭素との原子数の比H/Cが2.0以上20以下の範囲内となるように、炭素含有物質及び水素含有物質の供給量を調整する。
【選択図】 図1
Description
ガス利用率(%)=100×(D-E)/(A-B-C) …(1)
但し、(1)式において、Aは供給燃料中のCとH2の総モル数、Bは供給燃料中の炭酸塩CO2と水分水和物H2Oのモル数、Cは炉の排ガスのうち、炉にリサイクルされた、COとH2のモル数、Dは排ガス中のCO2とH2Oのモル数、Eは炉の排ガスのうち、炉にリサイクルされた、CO2とH2Oのモル数である。
2 上吹きランス
3 水素含有ガス供給管
4 底吹き羽口
5 底吹きガス供給管
6 ガス回収用フード
7 排ガスダクト
7a 排ガスダクト
8 スクラバー
9 鉱石貯蔵ホッパー
9a 炭素含有物質貯蔵ホッパー
10 投入シュート
11 切出装置
12 ガスホルダー
13 ガス回収管
14 回収ガス供給管
15 予備還元炉
16 分散板
17 予備還元室
18 風箱
19 鉱石排出管
20 溶湯
21 溶融スラグ
22 鉱石
23 流動層
Claims (4)
- 溶融還元炉内に金属酸化物の鉱石を燃料及び還元材とともに装入し、酸素ガスを供給することにより前記鉱石を加熱・溶融して還元し、前記鉱石中の金属が含有される溶湯を溶製する溶融還元方法において、前記鉱石を加熱し且つ溶融還元するための燃料及び還元材として、固定炭素量が85質量%以上または揮発性成分量が10質量%以下である炭素含有物質と、水素含有物質と、を併用し、炉内に供給される炭素含有物質と水素含有物質とに含有される合計の水素と炭素との原子数の比H/Cが2.0以上20以下の範囲内となるように、炭素含有物質及び水素含有物質の供給量を調整することを特徴とする溶融還元方法。
- 前記溶融還元炉から排出される排ガスを湿式除塵装置で処理し、湿式除塵装置で処理した後の排ガスを燃料または還元材として回収することを特徴とする、請求項1に記載の溶融還元方法。
- 湿式除塵装置で処理した後の排ガスの少なくとも一部を燃料及び還元材として前記溶融還元炉に供給することを特徴とする、請求項2に記載の溶融還元方法。
- 前記鉱石を、前記溶融還元炉から排出される排ガスを用いて予め予熱し且つ予備還元することを特徴とする、請求項1ないし請求項3の何れか1つに記載の溶融還元方法。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101359237B1 (ko) | 2011-12-28 | 2014-02-06 | 주식회사 포스코 | 니켈 습식 제련공정의 수소 회수 방법 및 장치 |
KR101736610B1 (ko) * | 2015-12-04 | 2017-05-17 | 주식회사 포스코 | 비산 광석 포집용 호퍼 및 이를 포함하는 비산 광석 처리 장치 |
JP2020084269A (ja) * | 2018-11-26 | 2020-06-04 | 住友金属鉱山株式会社 | 酸化鉱石の製錬方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04314808A (ja) * | 1991-04-15 | 1992-11-06 | Nippon Steel Corp | 溶融還元炉における排ガス改質方法と装置 |
JPH10251729A (ja) * | 1997-03-17 | 1998-09-22 | Kawasaki Steel Corp | クロム鉱石の溶融還元方法 |
JP2000328133A (ja) * | 1999-05-12 | 2000-11-28 | Nkk Corp | 粉粒物の炉への装入方法 |
JP2001506315A (ja) * | 1996-12-18 | 2001-05-15 | テクノロジカル リソーシズ プロプライエタリー リミテッド | 金属酸化物団塊の直接還元 |
JP2005281749A (ja) * | 2004-03-29 | 2005-10-13 | Jfe Steel Kk | 金属酸化物含有鉱石の溶融還元方法 |
JP2010100876A (ja) * | 2008-10-22 | 2010-05-06 | Jfe Steel Corp | 冶金炉発生排ガスの改質・増熱方法およびその装置 |
JP2011006744A (ja) * | 2009-06-26 | 2011-01-13 | Jfe Steel Corp | 溶融還元方法 |
-
2009
- 2009-06-26 JP JP2009151932A patent/JP5439978B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04314808A (ja) * | 1991-04-15 | 1992-11-06 | Nippon Steel Corp | 溶融還元炉における排ガス改質方法と装置 |
JP2001506315A (ja) * | 1996-12-18 | 2001-05-15 | テクノロジカル リソーシズ プロプライエタリー リミテッド | 金属酸化物団塊の直接還元 |
JPH10251729A (ja) * | 1997-03-17 | 1998-09-22 | Kawasaki Steel Corp | クロム鉱石の溶融還元方法 |
JP2000328133A (ja) * | 1999-05-12 | 2000-11-28 | Nkk Corp | 粉粒物の炉への装入方法 |
JP2005281749A (ja) * | 2004-03-29 | 2005-10-13 | Jfe Steel Kk | 金属酸化物含有鉱石の溶融還元方法 |
JP2010100876A (ja) * | 2008-10-22 | 2010-05-06 | Jfe Steel Corp | 冶金炉発生排ガスの改質・増熱方法およびその装置 |
JP2011006744A (ja) * | 2009-06-26 | 2011-01-13 | Jfe Steel Corp | 溶融還元方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101359237B1 (ko) | 2011-12-28 | 2014-02-06 | 주식회사 포스코 | 니켈 습식 제련공정의 수소 회수 방법 및 장치 |
KR101736610B1 (ko) * | 2015-12-04 | 2017-05-17 | 주식회사 포스코 | 비산 광석 포집용 호퍼 및 이를 포함하는 비산 광석 처리 장치 |
JP2020084269A (ja) * | 2018-11-26 | 2020-06-04 | 住友金属鉱山株式会社 | 酸化鉱石の製錬方法 |
JP7285423B2 (ja) | 2018-11-26 | 2023-06-02 | 住友金属鉱山株式会社 | 酸化鉱石の製錬方法 |
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