JP4384698B2 - 焼結鉱の製造方法 - Google Patents
焼結鉱の製造方法 Download PDFInfo
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- JP4384698B2 JP4384698B2 JP2008102550A JP2008102550A JP4384698B2 JP 4384698 B2 JP4384698 B2 JP 4384698B2 JP 2008102550 A JP2008102550 A JP 2008102550A JP 2008102550 A JP2008102550 A JP 2008102550A JP 4384698 B2 JP4384698 B2 JP 4384698B2
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- JP
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- Prior art keywords
- ore
- gas
- reduced
- sintered
- reducing
- 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.)
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- 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
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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
- C21B13/0033—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
- C21B13/0086—Conditioning, transformation of reduced iron ores
-
- 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
- C21B13/146—Multi-step reduction without melting
-
- 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
- C22B1/205—Sintering; Agglomerating in sintering machines with movable grates regulation of the sintering process
-
- 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
- C22B5/18—Reducing step-by-step
-
- 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
-
- 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)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
Description
(1)結晶水を含む鉄鉱石を、還元性ガスを用いて還元し、得られる還元鉱石を焼結原料に使用して焼結鉱を製造する焼結鉱の製造方法であって、前記還元に用いる還元性ガスとして、高炉ガスを部分酸化したガスを使用することを特徴とする焼結鉱の製造方法。
(2)前記結晶水を含む鉄鉱石が、ピソライト鉱石又はマラマンバ鉱石の少なくともいずれかであることを特徴とする前記(1)記載の焼結鉱の製造方法。
(3)前記還元を、流動層を用いて行うことを特徴とする前記(1)又は(2)記載の焼結鉱の製造方法。
(4)前記部分酸化する高炉ガスに事前に、転炉ガス、コークス炉ガス、天然ガス、液化石油ガス、その他高炉ガスよりも発熱量の高いガスより選ばれる一種以上を加えることを特徴とする前記(3)記載の焼結鉱の製造方法。
OD=(H2O%+CO2%)/(H2%+H2O%+CO%+CO2%)×100
粉鉄鉱石について本発明の還元を行わず、そのまま焼結原料として焼結プロセスに用いた。成品焼結鉱を1トン製造するのに使用する配合原料は1477kgである。凝結材は成品焼結鉱1トン当たり60.2kg使用した。このうち、無煙炭使用量は成品焼結鉱1トン当たり18.4kgであった。
図3に基づいて本発明例を説明する。流動層還元炉として、第1流動層還元炉42及び第2流動層還元炉41からなる循環流動層を用いた。空塔速度を7m/sとする。
2:熱交換器
3:部分燃焼炉
4:廃熱回収装置
5:焼結機本体
6:焼結主排ガス吸引ブロワー
7:篩い
11:ピソライト鉱石、マラマンバ鉱石等の結晶水を含む粉鉄鉱石
12:高炉ガス
13:予熱高炉ガス
14:空気
15:還元ガス
16:流動層還元炉排ガス
17:熱交換器排ガス
18:廃熱回収装置排ガス
19:還元鉱石
20:鉄鉱石、雑鉄源、副原料、返鉱及び凝結材
21:配合原料
22:焼結層
23:焼結鉱
24:成品焼結鉱
25:返鉱
26:焼結主排ガス
31:ピソライト鉱石またはマラマンバ鉱石を予備還元した還元鉱石を配合した焼結原料層の昇温曲線
32:通常原料を配合した焼結原料層の昇温曲線
41:第1流動層還元炉
42:第2流動層還元炉
43:燃焼器
44:熱交換器
45:部分燃焼炉
46:廃熱回収装置
47:冷却除塵装置
48:圧力回収装置
51:ローブリバー粉鉄鉱石
52:還元鉱石1
53:還元鉱石2
54:昇圧高炉ガス
55:予熱昇圧高炉ガス
56:昇圧空気
57:還元ガス
58:流動層還元炉2排ガス
59:昇圧空気
60:流動層還元炉1排ガス
61:昇圧空気
62:燃焼排ガス
63:熱交換器排ガス
64:廃熱回収装置排ガス
65:冷却除塵後排ガス
66:圧力回収後排ガス
71:焼結機本体
72:焼結主排ガス吸引ブロワー
73:篩い
81:鉄鉱石、雑鉄源、副原料、返鉱及び凝結材
82:配合原料
83:焼結層
84:焼結鉱
85:成品焼結鉱
86:返鉱
87:焼結主排ガス
Claims (4)
- 結晶水を含む鉄鉱石を、還元性ガスを用いて還元し、得られる還元鉱石を焼結原料に使用して焼結鉱を製造する焼結鉱の製造方法であって、前記還元に用いる還元性ガスとして、高炉ガスを部分酸化したガスを使用することを特徴とする焼結鉱の製造方法。
- 前記結晶水を含む鉄鉱石が、ピソライト鉱石又はマラマンバ鉱石の少なくともいずれかであることを特徴とする請求項1記載の焼結鉱の製造方法。
- 前記還元を、流動層を用いて行うことを特徴とする請求項1又は2記載の焼結鉱の製造方法。
- 前記部分酸化する高炉ガスに事前に、転炉ガス、コークス炉ガス、天然ガス、液化石油ガス、その他高炉ガスよりも発熱量の高いガスより選ばれる一種以上を加えることを特徴とする請求項3記載の焼結鉱の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008102550A JP4384698B2 (ja) | 2008-04-10 | 2008-04-10 | 焼結鉱の製造方法 |
BRPI0911318-5A BRPI0911318B1 (pt) | 2008-04-10 | 2009-03-31 | Processos de produção de minério sinterizado |
PCT/JP2009/056620 WO2009125693A1 (ja) | 2008-04-10 | 2009-03-31 | 焼結鉱の製造方法 |
CN2009801126413A CN101999004B (zh) | 2008-04-10 | 2009-03-31 | 烧结矿的制造方法 |
KR1020107025116A KR101284532B1 (ko) | 2008-04-10 | 2009-03-31 | 소결광의 제조 방법 |
Applications Claiming Priority (1)
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JP2008102550A JP4384698B2 (ja) | 2008-04-10 | 2008-04-10 | 焼結鉱の製造方法 |
Publications (2)
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JP2009249725A JP2009249725A (ja) | 2009-10-29 |
JP4384698B2 true JP4384698B2 (ja) | 2009-12-16 |
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JP2008102550A Active JP4384698B2 (ja) | 2008-04-10 | 2008-04-10 | 焼結鉱の製造方法 |
Country Status (5)
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---|---|
JP (1) | JP4384698B2 (ja) |
KR (1) | KR101284532B1 (ja) |
CN (1) | CN101999004B (ja) |
BR (1) | BRPI0911318B1 (ja) |
WO (1) | WO2009125693A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013133513A (ja) * | 2011-12-27 | 2013-07-08 | Jfe Steel Corp | 塊成鉱の製造方法 |
JP2013133512A (ja) * | 2011-12-27 | 2013-07-08 | Jfe Steel Corp | 高炉用原料の製造方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102213659A (zh) * | 2011-04-12 | 2011-10-12 | 河北钢铁股份有限公司邯郸分公司 | 利用微型烧结试验研究铁矿石烧结性能的方法 |
KR101590994B1 (ko) * | 2014-09-12 | 2016-02-19 | 주식회사 포스코 | 소결광 제조 방법 및 이의 제조 설비 |
CN104726692A (zh) * | 2015-04-03 | 2015-06-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | 一种提高铁矿石竖炉磁化焙烧还原温度的方法 |
CN104988305B (zh) * | 2015-07-14 | 2017-03-01 | 江苏永钢集团有限公司 | 酸性烧结矿的生产工艺 |
CN106048212B (zh) * | 2016-06-07 | 2017-11-28 | 东南大学 | 一种分级还原燃烧制取烧结矿并分离co2的装置及方法 |
CN106048214B (zh) * | 2016-06-07 | 2017-11-28 | 东南大学 | 一种合成气还原燃烧制取烧结矿并分离co2的装置及其方法 |
CN106011460B (zh) * | 2016-07-15 | 2018-03-06 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种利用高硫铁精矿制备烧结矿的方法 |
CN106636508B (zh) * | 2016-10-30 | 2018-06-19 | 华北理工大学 | 一种高效循环利用高炉炉顶煤气的炼铁工艺 |
KR101977358B1 (ko) * | 2017-08-28 | 2019-05-10 | 주식회사 포스코 | 소결광 제조방법 및 그 제조 장치 |
CN113025771B (zh) * | 2021-03-05 | 2022-05-17 | 山东大学 | 一种烧结机篦式生产直接还原铁的系统及方法 |
Family Cites Families (7)
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GB1247417A (en) * | 1969-05-22 | 1971-09-22 | Armco Steel Corp | Method of blast furnace reduction of iron ores |
JPS589126B2 (ja) * | 1981-02-28 | 1983-02-19 | 住友金属工業株式会社 | 焼結機排ガス中の窒素酸化物低減方法 |
JPS6277426A (ja) * | 1985-09-28 | 1987-04-09 | Kobe Steel Ltd | 結晶水含有鉱石の結晶水除去方法 |
KR100236191B1 (ko) | 1997-12-20 | 1999-12-15 | 이구택 | 분철광석의 유동층식 예비환원장치 및 이를 이용한 예비환원방법 |
AUPP483898A0 (en) * | 1998-07-24 | 1998-08-13 | Technological Resources Pty Limited | A direct smelting process & apparatus |
JP2001271121A (ja) * | 2000-03-28 | 2001-10-02 | Nkk Corp | 高炉用焼結鉱の製造方法 |
JP5020501B2 (ja) * | 2005-11-17 | 2012-09-05 | 新日本製鐵株式会社 | 焼結原料の事前処理方法及び焼結鉱の製造方法 |
-
2008
- 2008-04-10 JP JP2008102550A patent/JP4384698B2/ja active Active
-
2009
- 2009-03-31 BR BRPI0911318-5A patent/BRPI0911318B1/pt active IP Right Grant
- 2009-03-31 WO PCT/JP2009/056620 patent/WO2009125693A1/ja active Application Filing
- 2009-03-31 KR KR1020107025116A patent/KR101284532B1/ko active IP Right Grant
- 2009-03-31 CN CN2009801126413A patent/CN101999004B/zh active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013133513A (ja) * | 2011-12-27 | 2013-07-08 | Jfe Steel Corp | 塊成鉱の製造方法 |
JP2013133512A (ja) * | 2011-12-27 | 2013-07-08 | Jfe Steel Corp | 高炉用原料の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN101999004A (zh) | 2011-03-30 |
JP2009249725A (ja) | 2009-10-29 |
CN101999004B (zh) | 2013-02-06 |
KR101284532B1 (ko) | 2013-07-16 |
KR20100129793A (ko) | 2010-12-09 |
BRPI0911318B1 (pt) | 2018-03-06 |
WO2009125693A1 (ja) | 2009-10-15 |
BRPI0911318A2 (pt) | 2015-09-29 |
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