BR112018017087A2 - método para refinar o aço fundido em equipamentos de desgaseificação a vácuo - Google Patents
método para refinar o aço fundido em equipamentos de desgaseificação a vácuoInfo
- Publication number
- BR112018017087A2 BR112018017087A2 BR112018017087A BR112018017087A BR112018017087A2 BR 112018017087 A2 BR112018017087 A2 BR 112018017087A2 BR 112018017087 A BR112018017087 A BR 112018017087A BR 112018017087 A BR112018017087 A BR 112018017087A BR 112018017087 A2 BR112018017087 A2 BR 112018017087A2
- Authority
- BR
- Brazil
- Prior art keywords
- molten steel
- boom
- jet
- tip
- vacuum degassing
- Prior art date
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
a presente invenção melhora o rendimento de adição e a eficiência de transferência de calor de pó em um método de refino que compreende aquecer pós de um agente de dessulfurização de cao, minério de manganês e semelhantes, utilizar a chama formada na ponta de uma lança de topo, e projetar a mesma sobre o aço fundido, usando-se equipamento de desgaseificação a vácuo. o método de refino de aço fundido de acordo com a presente invenção compreende aquecer e soprar pó sobre o aço fundido (3) enquanto se forma a chama por meio de combustão de um gás de hidrocarboneto na ponta de uma lança de topo (13), em que a pressão dinâmica (p) de um fluxo de jato ejetado da lança de topo, que é calculada pela fórmula (1), é ajustada para 20,0 a 100,0 kpa, em que a altura da lança (a distância entre a superfície estática do aço fundido e a ponta da lança) da lança de topo é 1,0 a 7,0 m. no presente documento, na fórmula (1), p representa a pressão dinâmica (kpa) do jato na saída da lança de topo, ¿g representa a densidade (kg/nm3) do jato, e u representa a velocidade de fluxo (m/s) do jato na saída da lança de topo. p = ¿g ¿ u2/2 ··· (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016032620 | 2016-02-24 | ||
| JP2016-032620 | 2016-02-24 | ||
| PCT/JP2017/005391 WO2017145877A1 (ja) | 2016-02-24 | 2017-02-15 | 真空脱ガス設備における溶鋼の精錬方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BR112018017087A2 true BR112018017087A2 (pt) | 2019-01-02 |
| BR112018017087B1 BR112018017087B1 (pt) | 2022-05-17 |
Family
ID=59685122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112018017087-9A BR112018017087B1 (pt) | 2016-02-24 | 2017-02-15 | Método para refinar o aço fundido em equipamentos de desgaseificação a vácuo |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US10745771B2 (pt) |
| EP (1) | EP3421620B1 (pt) |
| JP (1) | JP6343844B2 (pt) |
| KR (1) | KR102150412B1 (pt) |
| CN (1) | CN108699614B (pt) |
| BR (1) | BR112018017087B1 (pt) |
| RU (1) | RU2697113C1 (pt) |
| TW (1) | TWI621713B (pt) |
| WO (1) | WO2017145877A1 (pt) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6939733B2 (ja) * | 2018-07-31 | 2021-09-22 | Ｊｆｅスチール株式会社 | 減圧下での溶鋼の精錬方法 |
| JP7163780B2 (ja) * | 2019-01-10 | 2022-11-01 | 日本製鉄株式会社 | 溶鋼の精錬方法 |
| CN110955956A (zh) * | 2019-11-07 | 2020-04-03 | 北京科技大学 | 基于lf炉精炼过程钢水温度和成分联合预测的方法及*** |
| CN111298632B (zh) * | 2020-03-03 | 2022-03-01 | 福建龙净环保股份有限公司 | 一种湿法脱硫用吸收塔及其静压测试装置 |
| WO2022009630A1 (ja) * | 2020-07-09 | 2022-01-13 | Ｊｆｅスチール株式会社 | 溶鋼の精錬方法 |
| CN115287410B (zh) * | 2022-08-10 | 2023-11-03 | 中国重型机械研究院股份公司 | 一种rh喷粉真空精炼装置及其精炼方法 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5873715A (ja) | 1981-10-27 | 1983-05-04 | Nippon Kokan Kk <Nkk> | 真空脱ガス処理装置による溶鋼の脱炭方法 |
| JPS63293109A (ja) | 1987-05-25 | 1988-11-30 | Sumitomo Metal Ind Ltd | 低炭素・高マンガン鋼の溶製方法 |
| JPH0192312A (ja) | 1987-09-30 | 1989-04-11 | Sumitomo Metal Ind Ltd | 高マンガン鋼の製造方法 |
| JPH01301815A (ja) | 1988-05-30 | 1989-12-06 | Sumitomo Metal Ind Ltd | 低炭素鋼の溶製方法 |
| JPH0247215A (ja) | 1988-08-08 | 1990-02-16 | Sumitomo Metal Ind Ltd | 極低炭素鋼の製造方法 |
| JPH0488114A (ja) | 1990-07-31 | 1992-03-23 | Kawasaki Steel Corp | 高マンガン鋼の溶製方法 |
| JP2773525B2 (ja) | 1992-02-28 | 1998-07-09 | 住友金属工業株式会社 | 方向性電磁鋼板材の溶製方法 |
| JP2776118B2 (ja) | 1992-02-28 | 1998-07-16 | 住友金属工業株式会社 | 無方向性電磁鋼板材の溶製方法 |
| JP3214730B2 (ja) | 1992-05-13 | 2001-10-02 | 川崎製鉄株式会社 | 環流式真空脱ガス装置を用いた高純度鋼の精錬方法 |
| AU653294B2 (en) | 1992-08-26 | 1994-09-22 | Nippon Steel Corporation | Process for vacuum degassing molten steel |
| RU2073729C1 (ru) * | 1993-02-04 | 1997-02-20 | Олег Александрович Ползунов | Способ рафинирования стали |
| JP2972493B2 (ja) * | 1993-07-15 | 1999-11-08 | 新日本製鐵株式会社 | 溶鋼の真空精錬方法 |
| JP2001316713A (ja) * | 2000-05-09 | 2001-11-16 | Nkk Corp | 酸素製鋼炉の上吹き酸素制御方法 |
| JP3654216B2 (ja) * | 2001-07-31 | 2005-06-02 | 住友金属工業株式会社 | 減圧精錬方法 |
| RU2294383C2 (ru) * | 2005-04-04 | 2007-02-27 | Олег Александрович Ползунов | Способ струйно-вакуумного рафинирования стали |
| JP5061535B2 (ja) * | 2006-08-31 | 2012-10-31 | Ｊｆｅスチール株式会社 | Ｒｈ真空脱ガス装置における溶鋼の精錬方法 |
| JP5685979B2 (ja) * | 2011-02-23 | 2015-03-18 | Ｊｆｅスチール株式会社 | 溶鋼の精錬方法 |
| CN104126019B (zh) * | 2011-12-20 | 2017-06-23 | 杰富意钢铁株式会社 | 转炉炼钢方法 |
| JP2013133520A (ja) * | 2011-12-27 | 2013-07-08 | Jfe Steel Corp | 溶銑の脱燐精錬方法 |
| WO2013137292A1 (ja) * | 2012-03-15 | 2013-09-19 | Ｊｆｅスチール株式会社 | 溶鋼の真空精錬方法 |
-
2017
- 2017-02-15 RU RU2018130359A patent/RU2697113C1/ru active
- 2017-02-15 JP JP2017557159A patent/JP6343844B2/ja active Active
- 2017-02-15 BR BR112018017087-9A patent/BR112018017087B1/pt active IP Right Grant
- 2017-02-15 US US16/079,712 patent/US10745771B2/en active Active
- 2017-02-15 EP EP17756317.8A patent/EP3421620B1/en active Active
- 2017-02-15 KR KR1020187024151A patent/KR102150412B1/ko active IP Right Grant
- 2017-02-15 WO PCT/JP2017/005391 patent/WO2017145877A1/ja active Application Filing
- 2017-02-15 CN CN201780012818.7A patent/CN108699614B/zh active Active
- 2017-02-23 TW TW106106181A patent/TWI621713B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3421620A4 (en) | 2019-01-02 |
| EP3421620A1 (en) | 2019-01-02 |
| CN108699614B (zh) | 2020-11-03 |
| JPWO2017145877A1 (ja) | 2018-03-08 |
| TW201738386A (zh) | 2017-11-01 |
| KR20180102179A (ko) | 2018-09-14 |
| KR102150412B1 (ko) | 2020-09-01 |
| BR112018017087B1 (pt) | 2022-05-17 |
| WO2017145877A1 (ja) | 2017-08-31 |
| TWI621713B (zh) | 2018-04-21 |
| EP3421620B1 (en) | 2020-02-12 |
| JP6343844B2 (ja) | 2018-06-20 |
| RU2697113C1 (ru) | 2019-08-12 |
| CN108699614A (zh) | 2018-10-23 |
| US20190048431A1 (en) | 2019-02-14 |
| US10745771B2 (en) | 2020-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B06W | Patent application suspended after preliminary examination (for patents with searches from other patent authorities) chapter 6.23 patent gazette] | ||
| B350 | Update of information on the portal [chapter 15.35 patent gazette] | ||
| B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
| B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 15/02/2017, OBSERVADAS AS CONDICOES LEGAIS |