JP4981320B2 - 金属鉄の製法 - Google Patents
金属鉄の製法 Download PDFInfo
- Publication number
- JP4981320B2 JP4981320B2 JP2006008743A JP2006008743A JP4981320B2 JP 4981320 B2 JP4981320 B2 JP 4981320B2 JP 2006008743 A JP2006008743 A JP 2006008743A JP 2006008743 A JP2006008743 A JP 2006008743A JP 4981320 B2 JP4981320 B2 JP 4981320B2
- Authority
- JP
- Japan
- Prior art keywords
- iron
- slag
- iron oxide
- temperature
- molten slag
- 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.)
- Expired - Fee Related
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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
- C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
-
- 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
- C21B13/008—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
- C21B13/105—Rotary hearth-type furnaces
-
- 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)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
Description
鉄源として南米産の鉄鉱石(鉄分含量;67.74%、CaO;0.05%、SiO2:0.99%、Al2O3;0.56%、その他成分;1.55%)と下記表1に示す炭材を使用し、これらを、加熱還元により得られる金属鉄の炭素含量が約1%、2%、3%または4%となる様に配合して作製した原料ペレットを用いて、下記の条件で加熱還元実験を行った。
初期溶融スラグ生成温度は、原料中に含まれるスラグ形成成分と加熱還元時における未還元酸化鉄残存量によって決まってくるが、スラグ形成成分が適切でない場合は、スラグ形成成分として第3成分を追加することで、初期溶融スラグ生成温度を低下させることができる。
本発明では、還元剤として使用する炭素質還元剤(炭材)の性状を変えることで、初期溶融スラグ生成温度を制御したり、加熱還元時における未還元酸化鉄残存量を制御したりすることも可能である。本例では、炭材中にCaOを添加することでCaO含量を作為的に増大させ、初期溶融スラグ生成温度を変化させた場合を示している。
C 炭素
G グラファイト(炭材)
FeO 酸化鉄
S−Fe 固形金属鉄
Fe−C 浸炭溶融鉄
Claims (4)
- 炭素質還元剤と酸化鉄含有物質を含む原料混合物を加熱し、還元・溶融して金属鉄を製造する方法において、
最終的に得られる金属鉄の目標炭素濃度を定め、該目標炭素濃度に対応する初期溶融スラグの生成温度を算出して、当該生成温度となるように、鉄源由来の未還元酸化鉄と、脈石成分および/または炭材中の灰分に由来するスラグ形成成分の成分組成とを調整することを特徴とする金属鉄の製法。 - 前記初期溶融スラグの生成温度を、最初の配合原料中に含まれる脈石成分と、炭素質還元剤中の灰分と、還元途中で残存する未還元酸化鉄を合わせた多成分系平衡状態図から決定する請求項1に記載の製法。
- 前記初期溶融スラグ中の未還元酸化鉄の量を確保するために必要な前記原料混合物中に含まれる鉄酸化物の還元率を算出し、該還元率を確保するための還元操業条件を制御する請求項1または2に記載の製法。
- 前記初期溶融スラグの生成温度を、第3の脈石成分を添加することによって制御する請求項1〜3のいずれかに記載の製法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006008743A JP4981320B2 (ja) | 2006-01-17 | 2006-01-17 | 金属鉄の製法 |
CN2006800473579A CN101331239B (zh) | 2006-01-17 | 2006-11-30 | 金属铁的制法 |
CA2630236A CA2630236C (en) | 2006-01-17 | 2006-11-30 | Method for manufacturing metallic iron |
PCT/JP2006/323928 WO2007083450A1 (ja) | 2006-01-17 | 2006-11-30 | 金属鉄の製法 |
RU2008133606/02A RU2388830C1 (ru) | 2006-01-17 | 2006-11-30 | Способ получения металлического железа |
US12/094,607 US20090282950A1 (en) | 2006-01-17 | 2006-11-30 | Process for producing metallic iron |
AU2006335814A AU2006335814B2 (en) | 2006-01-17 | 2006-11-30 | Method for manufacturing metallic iron |
TW095149418A TWI307365B (en) | 2006-01-17 | 2006-12-28 | Method for manufacturing metallic iron |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006008743A JP4981320B2 (ja) | 2006-01-17 | 2006-01-17 | 金属鉄の製法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007191736A JP2007191736A (ja) | 2007-08-02 |
JP4981320B2 true JP4981320B2 (ja) | 2012-07-18 |
Family
ID=38287408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006008743A Expired - Fee Related JP4981320B2 (ja) | 2006-01-17 | 2006-01-17 | 金属鉄の製法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090282950A1 (ja) |
JP (1) | JP4981320B2 (ja) |
CN (1) | CN101331239B (ja) |
AU (1) | AU2006335814B2 (ja) |
CA (1) | CA2630236C (ja) |
RU (1) | RU2388830C1 (ja) |
TW (1) | TWI307365B (ja) |
WO (1) | WO2007083450A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010261101A (ja) | 2009-04-07 | 2010-11-18 | Mitsutaka Hino | 金属鉄の製法 |
CA2792955A1 (en) * | 2010-03-25 | 2011-09-29 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Carbon-material-containing iron oxide briquette composition, method for producing the same, and method for producing direct reduced iron using the same |
US9180521B2 (en) * | 2010-08-30 | 2015-11-10 | Kobe Steel, Ltd. | Method for producing granular metallic iron |
KR101293625B1 (ko) | 2011-08-26 | 2013-08-13 | 우진 일렉트로나이트(주) | 용융 슬래그 중 산화철 측정방법 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2248273C (en) * | 1996-03-15 | 2010-05-18 | Kabushiki Kaisha Kobe Seiko Sho | Method and apparatus for making metallic iron |
US6506231B2 (en) * | 1996-03-15 | 2003-01-14 | Kabushiki Kaisha Kobe Seiko Sho | Method and apparatus for making metallic iron |
JPH10195513A (ja) * | 1996-12-27 | 1998-07-28 | Kobe Steel Ltd | 金属鉄の製法 |
JPH10251724A (ja) * | 1997-03-13 | 1998-09-22 | Kobe Steel Ltd | 金属鉄の製法及び製造設備 |
US6149709A (en) * | 1997-09-01 | 2000-11-21 | Kabushiki Kaisha Kobe Seiko Sho | Method of making iron and steel |
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 |
JP3848453B2 (ja) * | 1998-01-09 | 2006-11-22 | 株式会社神戸製鋼所 | 金属鉄の製造方法 |
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 |
US6063744A (en) * | 1999-07-22 | 2000-05-16 | Mcquillen; Edwin F. | Cleaning and lubricant formulation for spindles |
JP2001279313A (ja) * | 2000-03-30 | 2001-10-10 | Midrex Internatl Bv | 溶融金属鉄の製法 |
JP2001342509A (ja) * | 2000-06-02 | 2001-12-14 | Kobe Steel Ltd | 金属鉄の製造方法および装置 |
JP4330257B2 (ja) * | 2000-08-09 | 2009-09-16 | 株式会社神戸製鋼所 | 金属鉄の製法 |
-
2006
- 2006-01-17 JP JP2006008743A patent/JP4981320B2/ja not_active Expired - Fee Related
- 2006-11-30 CA CA2630236A patent/CA2630236C/en not_active Expired - Fee Related
- 2006-11-30 CN CN2006800473579A patent/CN101331239B/zh not_active Expired - Fee Related
- 2006-11-30 AU AU2006335814A patent/AU2006335814B2/en not_active Ceased
- 2006-11-30 US US12/094,607 patent/US20090282950A1/en not_active Abandoned
- 2006-11-30 RU RU2008133606/02A patent/RU2388830C1/ru not_active IP Right Cessation
- 2006-11-30 WO PCT/JP2006/323928 patent/WO2007083450A1/ja active Application Filing
- 2006-12-28 TW TW095149418A patent/TWI307365B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2630236C (en) | 2012-07-31 |
TWI307365B (en) | 2009-03-11 |
AU2006335814B2 (en) | 2011-04-14 |
WO2007083450A1 (ja) | 2007-07-26 |
RU2388830C1 (ru) | 2010-05-10 |
AU2006335814A1 (en) | 2007-07-26 |
CA2630236A1 (en) | 2007-07-26 |
CN101331239A (zh) | 2008-12-24 |
JP2007191736A (ja) | 2007-08-02 |
RU2008133606A (ru) | 2010-02-27 |
TW200730630A (en) | 2007-08-16 |
CN101331239B (zh) | 2012-03-28 |
US20090282950A1 (en) | 2009-11-19 |
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