公开(公告)号：US20230279516A1

公开(公告)日：2023-09-07

申请号：US18019112

申请日：2021-07-13

Applicant: SMS group GmbH

Inventor： Hans-Jürgen ODENTHAL ,  Andreas KEMMINGER ,  Peter STARKE ,  Ralf NÖRTHEMANN

IPC: C21C5/46 ,  C21C5/32 ,  C21C5/52 ,  F27B3/22 ,  F27D3/16 ,  F27D99/00

CPC classification number: C21C5/4606 ,  C21C5/32 ,  C21C5/5217 ,  F27B3/225 ,  F27D3/16 ,  F27D99/0033 ,  F27D2003/164 ,  F27D2003/165 ,  F27D2003/168

Abstract: A burner comprises a primary nozzle for injecting an oxygen-rich gas. The primary nozzle is designed as a supersonic nozzle. A coaxial nozzle having an annular outlet opening is provided for injecting a fuel gas. The coaxial nozzle is designed as a subsonic nozzle and is coaxial to the primary nozzle. The primary nozzle has a convergent portion and a divergent portion, which adjoin each other at a radius of the narrowest cross-section. The annular outlet opening is located at an end face of the burner. The fuel gas, in the form of hydrogen or a mixture of hydrogen and a hydrocarbon-containing gas, is injected at a fixed inlet pressure and a fixed inlet volumetric flow rate, with respect to a planned thermal power of the burner. In contrast, the inlet pressure and the inlet volumetric flow rate of the oxygen-rich gas are varied according to the application.

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

IPC: C21C5/35 ,  C21C5/46 ,  C21C5/52

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.

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

IPC: C21C5/04 ,  F27B3/08 ,  F27B3/22 ,  F27D17/00

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.