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Method Of Desulfurizing Steel
Abstract: A method of desulfurizing steel including steps of forming a slag over a molten steel drawing a vacuum to less than 5 torr over the slag and molten steel stirring the molten steel and slag and deoxidizing and desulfurizing the molten steel and slag to degas the steel reducing at least sulfur nitrogen oxygen and hydrogen contents and reducing activity of oxygen in the molten metal to less than 30 ppm. The method includes forming a slag composition after degassing the steel comprising CaO between 50 and 70% by weight Si0 between 20 and 28% by weight CaFbetween 5 and 15% by weight MgO not more than 8% by weight AIO not more than 1% by weight and a combination of FeO + MnO not more than 2% by weight where the sum of CaO +CaF + Si0 + MgO is at least 85% by weight.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
09 July 2013
Publication Number
36/2014
Publication Type
INA
Invention Field
METALLURGY
Status
Email
ipo@knspartners.com
Parent Application
Patent Number
Legal Status
Grant Date
2021-08-25
Renewal Date
Applicants
BLUESCOPE STEEL LIMITED
Level 11
120 Collins Street
Melbourne Victoria 3000
IHI CORPORATION
1 1 Toyosu 3 Chome
Koto Ku
Tokyo 135 8710
NUCOR CORPORATION
1915 Rexford Road
Charlotte North Carolina 28211
Inventors
1. PANDA Dhiren
6061 East State Hwy. 18
Armorel Arkansas 72310
2. ROSS Neal
6061 East State Hwy. 18
Armorel Arkansas 72310
3. MCQUILLIS Gary
6061 East State Hwy. 18
Armorel Arkansas 72310
4. JENKINS Jerome
6061 East State Hwy. 18
Armorel Arkansas 72310
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 5434-CHENP-2013-FORM 4 [04-03-2022(online)].pdf | 2022-03-04 |
| 1 | Specification.pdf | 2013-07-10 |
| 2 | 5434-CHENP-2013-IntimationOfGrant25-08-2021.pdf | 2021-08-25 |
| 2 | FORM 5.pdf | 2013-07-10 |
| 3 | FORM 3.pdf | 2013-07-10 |
| 3 | 5434-CHENP-2013-PatentCertificate25-08-2021.pdf | 2021-08-25 |
| 4 | Drawings.pdf | 2013-07-10 |
| 4 | 5434-CHENP-2013-FORM 3 [13-11-2020(online)].pdf | 2020-11-13 |
| 5 | 5434-CHENP-2013.pdf | 2013-07-10 |
| 5 | 5434-CHENP-2013-FORM 3 [12-02-2020(online)].pdf | 2020-02-12 |
| 6 | 5434-CHENP-2013-CLAIMS [12-07-2019(online)].pdf | 2019-07-12 |
| 6 | 5434-CHENP-2013 POWER OF ATTORNEY 28-10-2013.pdf | 2013-10-28 |
| 7 | 5434-CHENP-2013-COMPLETE SPECIFICATION [12-07-2019(online)].pdf | 2019-07-12 |
| 7 | 5434-CHENP-2013 CORRESPONDENCE OTHERS 28-10-2013.pdf | 2013-10-28 |
| 8 | 5434-CHENP-2013-FER_SER_REPLY [12-07-2019(online)].pdf | 2019-07-12 |
| 8 | 5434-CHENP-2013 FORM-1 27-12-2013.pdf | 2013-12-27 |
| 9 | 5434-CHENP-2013 CORRESPONDENCE OTHERS 27-12-2013.pdf | 2013-12-27 |
| 9 | 5434-CHENP-2013-OTHERS [12-07-2019(online)].pdf | 2019-07-12 |
| 10 | 5434-CHENP-2013-PETITION UNDER RULE 137 [12-07-2019(online)].pdf | 2019-07-12 |
| 10 | abstract5434-CHENP-2013.jpg | 2014-08-12 |
| 11 | 5434-CHENP-2013-FORM 3 [08-07-2019(online)].pdf | 2019-07-08 |
| 11 | 5434-CHENP-2013. FORM-3 25-08-2015.pdf | 2015-08-25 |
| 12 | 5434-CHENP-2013-Information under section 8(2) (MANDATORY) [08-07-2019(online)].pdf | 2019-07-08 |
| 12 | 5434-CHENP-2013. CORRESPONDENCE OTHERS 25-08-2015.pdf | 2015-08-25 |
| 13 | 5434-CHENP-2013-FER.pdf | 2019-02-01 |
| 13 | Other Document [29-02-2016(online)].pdf | 2016-02-29 |
| 14 | Form 13 [29-02-2016(online)].pdf | 2016-02-29 |
| 15 | 5434-CHENP-2013-FER.pdf | 2019-02-01 |
| 15 | Other Document [29-02-2016(online)].pdf | 2016-02-29 |
| 16 | 5434-CHENP-2013-Information under section 8(2) (MANDATORY) [08-07-2019(online)].pdf | 2019-07-08 |
| 16 | 5434-CHENP-2013. CORRESPONDENCE OTHERS 25-08-2015.pdf | 2015-08-25 |
| 17 | 5434-CHENP-2013. FORM-3 25-08-2015.pdf | 2015-08-25 |
| 17 | 5434-CHENP-2013-FORM 3 [08-07-2019(online)].pdf | 2019-07-08 |
| 18 | abstract5434-CHENP-2013.jpg | 2014-08-12 |
| 18 | 5434-CHENP-2013-PETITION UNDER RULE 137 [12-07-2019(online)].pdf | 2019-07-12 |
| 19 | 5434-CHENP-2013 CORRESPONDENCE OTHERS 27-12-2013.pdf | 2013-12-27 |
| 19 | 5434-CHENP-2013-OTHERS [12-07-2019(online)].pdf | 2019-07-12 |
| 20 | 5434-CHENP-2013 FORM-1 27-12-2013.pdf | 2013-12-27 |
| 20 | 5434-CHENP-2013-FER_SER_REPLY [12-07-2019(online)].pdf | 2019-07-12 |
| 21 | 5434-CHENP-2013 CORRESPONDENCE OTHERS 28-10-2013.pdf | 2013-10-28 |
| 21 | 5434-CHENP-2013-COMPLETE SPECIFICATION [12-07-2019(online)].pdf | 2019-07-12 |
| 22 | 5434-CHENP-2013 POWER OF ATTORNEY 28-10-2013.pdf | 2013-10-28 |
| 22 | 5434-CHENP-2013-CLAIMS [12-07-2019(online)].pdf | 2019-07-12 |
| 23 | 5434-CHENP-2013-FORM 3 [12-02-2020(online)].pdf | 2020-02-12 |
| 23 | 5434-CHENP-2013.pdf | 2013-07-10 |
| 24 | 5434-CHENP-2013-FORM 3 [13-11-2020(online)].pdf | 2020-11-13 |
| 24 | Drawings.pdf | 2013-07-10 |
| 25 | FORM 3.pdf | 2013-07-10 |
| 25 | 5434-CHENP-2013-PatentCertificate25-08-2021.pdf | 2021-08-25 |
| 26 | FORM 5.pdf | 2013-07-10 |
| 26 | 5434-CHENP-2013-IntimationOfGrant25-08-2021.pdf | 2021-08-25 |
| 27 | Specification.pdf | 2013-07-10 |
| 27 | 5434-CHENP-2013-FORM 4 [04-03-2022(online)].pdf | 2022-03-04 |
Search Strategy
| 1 | 5434chenp2013_28-08-2018.pdf |