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公开(公告)号：US20230279527A1
公开(公告)日：2023-09-07
申请号：US18017510
申请日：2021-06-29
Applicant: SMS GROUP GMBH
Inventor： Ingo SCHUSTER , Thomas HENKEL , Volker WIEGMANN , Markus REIFFERSCHEID , Hans FERKEL
IPC: C22C33/04 , B21B1/26 , B21B3/02 , B22D11/00 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/54 , C22C38/42 , C22C38/04 , C22C38/02 , C22C38/00
CPC classification number: C22C33/04 , B21B1/26 , B21B3/02 , B22D11/001 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/54 , C22C38/42 , C22C38/04 , C22C38/02 , C22C38/001
Abstract: A method for producing steel strip, in particular hot strip in the form of coiled coils or in the form of folded individual sheets, in which a steel melt is first produced, this is then formed into a strand in a continuous casting system, the strand is then fed into a heating unit and the heated strand is then rolled into hot strip in a subsequent rolling mill. The casting of the strand, the passage through the heating unit, and the rolling take place in a continuous process. To be able to produce hot-rolled steel strips in the most energy-efficient way possible and to make these strips available for further processing into high-quality cold-rolled and, if necessary, coated strips, the invention provides that, first of all, a steel melt is produced.
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公开(公告)号：US20230175087A1
公开(公告)日：2023-06-08
申请号：US17922236
申请日：2021-03-02
Applicant: SMS group GmbH
Inventor： Jochen SCHLÜTER , Ralf NÖRTHEMANN , Thomas HENKEL , Paul TOCKERT
CPC classification number: C21B13/12 , C21B13/008 , C21B5/04
Abstract: A method for producing liquid pig iron comprises: i) providing a DRI product with an iron content of at least 75.0 wt. %, a carbon content of at least 0.10 wt. % and a content of acidic and basic slag components, comprising CaO, SiO2, MgO and Al2O3 of max. 15.0 wt. %; ii) supplying the DRI product, adding slag formers, into an electrically operated smelting unit; iii) optionally supplying further iron and/or carbon components into the electrically operated smelting unit; iv) smelting the DRI product and optionally the further iron and/or carbon components in the presence of the slag formers, so that a liquid pig iron phase and a liquid slag phase are formed; v) adjusting the slag phase such that it has a basicity of (CaO+MgO/SiO2) from 0.95 to 1.5; vi) tapping the liquid pig iron phase; and vii) tapping and granulating the slag phase.
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公开(公告)号：US20210040573A1
公开(公告)日：2021-02-11
申请号：US16978378
申请日：2019-03-05
Applicant: SMS GROUP GMBH
Inventor： Peter STARKE , Andreas SCHÜRING , Thomas HENKEL , Hans-Jürgen ODENTHAL
Abstract: An improved apparatus for producing steel, including a lower furnace, an annular, water-cooled, fireproof lined cylindrical upper furnace, on which an upwardly closing conically tapering hat having openings can be placed. The smelting assembly is configured for the operational mode without melt flow and the operational mode with melt flow. To this end, at least one opening is provided in the conical furnace cover, through which opening at least one top lance can be introduced into the upper furnace. A plurality of sidewall injectors radially rotate around the cylindrical upper furnace in such a way that in a working position, the top lance and the sidewall injectors are directed onto a smelt level of a molten mass located in the lower furnace for refining.
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公开(公告)号：US20250043370A1
公开(公告)日：2025-02-06
申请号：US18718045
申请日：2022-11-28
Applicant: SMS group GmbH
Inventor： Hans-Jürgen ODENTHAL , Andreas SCHÜRING , Peter STARKE , Thomas HENKEL
Abstract: A smelting unit for steel production with a tap weight of between 60 t and 350 t and a method for operating the same are disclosed. By a top lance that moves during operation of the smelting unit and the coordinated injection of process gases by sidewall injectors and the top lance, the undulations in the surface of the molten bath are reduced. As a result, fewer drops detach from the surface of the molten bath and soiling of the upper receptacle and the exhaust manifold is significantly reduced.
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