JP2008184667A - 溶銑の脱硫処理方法 - Google Patents
溶銑の脱硫処理方法 Download PDFInfo
- Publication number
- JP2008184667A JP2008184667A JP2007020228A JP2007020228A JP2008184667A JP 2008184667 A JP2008184667 A JP 2008184667A JP 2007020228 A JP2007020228 A JP 2007020228A JP 2007020228 A JP2007020228 A JP 2007020228A JP 2008184667 A JP2008184667 A JP 2008184667A
- Authority
- JP
- Japan
- Prior art keywords
- desulfurization
- desulfurizing
- agent
- cao
- dust
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Y02P10/20—Recycling
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
【解決手段】 CaO系脱硫剤を用いた溶銑の脱硫処理時に回収された集塵ダストを脱硫剤の一部として再利用して溶銑を脱硫処理するに際し、前記集塵ダストの脱硫剤中の配合量を90質量%以下、好ましくは20〜80質量%とした脱硫剤を用いて脱硫処理する。このようにすることで、微粉である集塵ダストの飛散が抑えられ、且つ、溶鉄/脱硫剤間の反応界面積が大きい集塵ダストによる脱硫反応効率の向上が発現し、脱硫剤の全量を新規原料の脱硫剤とした場合と同等或いはそれ以上の脱硫効率で、安定して溶銑を脱硫処理することが可能となる。
【選択図】 図2
Description
2 台車
3 処理容器
4 溶銑
5 攪拌羽根
6 投入シュート
7 脱硫剤
Claims (3)
- CaO系脱硫剤を用いた溶銑の脱硫処理時に回収された集塵ダストを脱硫剤の一部として再利用して溶銑を脱硫処理するに際し、前記集塵ダストの脱硫剤中の配合量を90質量%以下とした脱硫剤を用いて脱硫処理することを特徴とする、溶銑の脱硫処理方法。
- 前記集塵ダストの脱硫剤中の配合量を20〜80質量%とした脱硫剤を用いることを特徴とする、請求項1に記載の溶銑の脱硫処理方法。
- 前記脱硫処理方法は、機械攪拌式脱硫装置を用いて溶銑を攪拌しながら行う脱硫方法であることを特徴とする、請求項1または請求項2に記載の溶銑の脱硫処理方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007020228A JP5066923B2 (ja) | 2007-01-31 | 2007-01-31 | 溶銑の脱硫処理方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007020228A JP5066923B2 (ja) | 2007-01-31 | 2007-01-31 | 溶銑の脱硫処理方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008184667A true JP2008184667A (ja) | 2008-08-14 |
JP5066923B2 JP5066923B2 (ja) | 2012-11-07 |
Family
ID=39727905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007020228A Active JP5066923B2 (ja) | 2007-01-31 | 2007-01-31 | 溶銑の脱硫処理方法 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5066923B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010269959A (ja) * | 2009-05-20 | 2010-12-02 | Sharp Corp | 精製装置および精製方法 |
JP2014201748A (ja) * | 2013-04-01 | 2014-10-27 | Jfeスチール株式会社 | 脱硫処理後の溶銑の復硫防止方法 |
CN106062216A (zh) * | 2014-02-26 | 2016-10-26 | 杰富意钢铁株式会社 | 铁水的脱硫方法及脱硫剂 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5199614A (en) * | 1975-03-01 | 1976-09-02 | Sumitomo Metal Ind | Yosetsudatsuryuni okeru shujindasutono ryoho |
JPS5747809A (en) * | 1980-09-01 | 1982-03-18 | Sumitomo Metal Ind Ltd | Regenerating method for dust after desulfurization of hot iron |
JPH0230709A (ja) * | 1988-07-19 | 1990-02-01 | Kawasaki Steel Corp | 溶銑予備処理発生ダストの回収利用方法およびその装置 |
JPH06220514A (ja) * | 1993-01-27 | 1994-08-09 | Kawasaki Steel Corp | 石灰系脱硫設備の集塵ダスト再利用方法 |
JPH09194923A (ja) * | 1996-01-08 | 1997-07-29 | Sumitomo Metal Ind Ltd | 溶銑予備処理発生ダストの再利用方法 |
JP2006291334A (ja) * | 2005-04-14 | 2006-10-26 | Sumitomo Metal Ind Ltd | 溶銑予備処理ダストのリサイクル方法 |
-
2007
- 2007-01-31 JP JP2007020228A patent/JP5066923B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5199614A (en) * | 1975-03-01 | 1976-09-02 | Sumitomo Metal Ind | Yosetsudatsuryuni okeru shujindasutono ryoho |
JPS5747809A (en) * | 1980-09-01 | 1982-03-18 | Sumitomo Metal Ind Ltd | Regenerating method for dust after desulfurization of hot iron |
JPH0230709A (ja) * | 1988-07-19 | 1990-02-01 | Kawasaki Steel Corp | 溶銑予備処理発生ダストの回収利用方法およびその装置 |
JPH06220514A (ja) * | 1993-01-27 | 1994-08-09 | Kawasaki Steel Corp | 石灰系脱硫設備の集塵ダスト再利用方法 |
JPH09194923A (ja) * | 1996-01-08 | 1997-07-29 | Sumitomo Metal Ind Ltd | 溶銑予備処理発生ダストの再利用方法 |
JP2006291334A (ja) * | 2005-04-14 | 2006-10-26 | Sumitomo Metal Ind Ltd | 溶銑予備処理ダストのリサイクル方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010269959A (ja) * | 2009-05-20 | 2010-12-02 | Sharp Corp | 精製装置および精製方法 |
JP2014201748A (ja) * | 2013-04-01 | 2014-10-27 | Jfeスチール株式会社 | 脱硫処理後の溶銑の復硫防止方法 |
CN106062216A (zh) * | 2014-02-26 | 2016-10-26 | 杰富意钢铁株式会社 | 铁水的脱硫方法及脱硫剂 |
Also Published As
Publication number | Publication date |
---|---|
JP5066923B2 (ja) | 2012-11-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5195833B2 (ja) | 溶銑の脱硫方法 | |
JP4845078B2 (ja) | 溶銑の脱硫方法 | |
JP5045031B2 (ja) | 溶銑の脱硫剤及び脱硫処理方法 | |
JP5195737B2 (ja) | 溶銑の脱硫方法 | |
JP5074064B2 (ja) | 脱硫剤の製造方法 | |
JP4715369B2 (ja) | 溶銑の脱硫処理方法 | |
JP5177170B2 (ja) | 溶銑の脱硫方法 | |
JP5066923B2 (ja) | 溶銑の脱硫処理方法 | |
JP4635672B2 (ja) | 溶融金属の精錬方法 | |
JP5130663B2 (ja) | 溶融鉄の精錬方法 | |
JP5341235B2 (ja) | 脱硫剤及び溶融鉄の脱硫処理方法 | |
JP5074063B2 (ja) | 脱硫剤及び溶融鉄の脱硫処理方法 | |
JP3978355B2 (ja) | 溶銑の脱硫剤および脱硫方法 | |
JP4998677B2 (ja) | 脱硫スラグの再利用方法 | |
JP5458499B2 (ja) | 溶銑の脱硫処理方法 | |
JP5446300B2 (ja) | 溶銑の脱硫処理方法 | |
JP4984928B2 (ja) | 溶銑の脱硫方法 | |
JP6238019B2 (ja) | 復硫の少ない溶銑脱硫方法 | |
JP2019189893A (ja) | 溶銑の脱硫処理方法 | |
JP5418248B2 (ja) | 溶銑の脱硫方法 | |
JP2018172719A (ja) | 溶銑の脱硫方法 | |
JP5481899B2 (ja) | 溶銑の脱硫剤及び脱硫処理方法 | |
JP2023003056A (ja) | 溶銑の脱硫処理方法及び脱硫剤 | |
JP4240033B2 (ja) | 溶銑の予備処理方法 | |
JPH0827508A (ja) | 溶銑の予備処理方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20090727 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100519 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20120130 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120228 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20120321 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20120327 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120424 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120717 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120730 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150824 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 5066923 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |