- 专利标题: Gas atomization of molten steel
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申请号: US18283774申请日: 2021-04-06
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公开(公告)号: US20240165704A1公开(公告)日: 2024-05-23
- 发明人: Enrique HERRAIZ LALANA , Mathieu COUVRAT , Pallava KAUSHIK , Alejandro CARO GUTIERREZ
- 申请人: ArcelorMittal
- 申请人地址: LU Luxembourg
- 专利权人: ArcelorMittal
- 当前专利权人: ArcelorMittal
- 当前专利权人地址: LU Luxembourg
- 国际申请: PCT/IB2021/052836 2021.04.06
- 进入国家日期: 2023-09-22
- 主分类号: B22F9/08
- IPC分类号: B22F9/08 ; B33Y70/00 ; C21C5/52 ; C21C7/00 ; C21C7/068 ; C21C7/10 ; C22C33/06
摘要:
A process for the production of steel powders including the steps of: providing molten iron from a blast furnace, refining the molten iron in a converter to form molten steel including up to 600 ppm C, up to 120 ppm S, up to 125 ppm P, up to 50 ppm N and up to 1200 ppm O, pouring the molten steel in a plurality of induction furnaces, adding, in each of the plurality of induction furnaces, at least one ferroalloy to adjust the steel composition, pouring the molten steel at the desired composition of each induction furnace in a dedicated reservoir connected to at least one gas atomizer, feeding the at least one gas atomizer of each reservoir in molten steel from each reservoir under pressure and gas atomizing the molten steel to form the steel powder at the desired composition.
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