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| Number | Title | Issue Date |
| 6162387 | Vacuum refining furnace A refining furnace used for vacuum refining has a sealing cover mounted on the refining furnace so as to cover the furnace throat of the refining furnace and to be in close contact with a sealing flange (10) formed on the refining furnace. The adhesion of... | 12/19/2000 |
| 5346528 | Continuous automatic steel making method and facility The present invention provides a continuous automatic steel making method and a facility which make it possible to make steel continuously and automatically by systematizing all steps of the steel making process. Steel is tapped from an electric furnace w... | 09/13/1994 |
| 4814006 | Making of steel A method of making steel in several stages under a reaction slag and accompanied by addition of oxygen carriers involving the moving of a metallurigical vessel along at least one line along which each step of a plurality of metallurigical process steps is... | 03/21/1989 |
| 4708738 | Method for refining very small heats of molten metal A steel refining vessel having a defined relatively long and thin configuration, and a steel refining method, particularly suited for the refining of heats of steel weighing two tons or less while enabling excellent heat retention and gas-metal reactions ... | 11/24/1987 |
| 4647019 | Very small refining vessel A steel refining vessel having a defined relatively long and thin configuration, and a steel refining method, particularly suited for the refining of heats of steel weighing two tons or less while enabling excellent heat retention and gas-metal reactions ... | 03/03/1987 |
| 4424955 | Apparatus for treating liquid metal in a vessel A method and apparatus for treating molten metal in a bottom pour vessel through a pouring opening controlled by a slidable gate closure member. A dual concentric tuyere having a central conduit and an outer annular conduit is positioned in the pouring op... | 01/10/1984 |
| 4385748 | Rotary steel converter A converter vessel is coaxially surrounded by a trunnion ring carried by a pair of trunnions for rotary or tilting motion about a horizontal axis. In order to permit rotation of the vessel relative to the trunnion ring about the vessel axis at right angle... | 05/31/1983 |
| 4369060 | Process of refining of a metal bath in a crucible with oxygen blast at the top and crucible used Process of refining of a metal bath in a crucible with oxygen blast at the top and crucible used. The invention consists essentially of providing in the bottom (15) of the crucible agitating gas injectors (15) located at least in a peripheral circular rin... | 01/18/1983 |
| 4343459 | Basic oxygen furnace construction A construction for the cone section zone of oxygen converter vessels consisting of a plurality of courses of refractory brick having a parallelogram configuration to provide a smooth surface for the working lining face.... | 08/10/1982 |
| 4328956 | Taphole assembly and method of installation A taphole assembly comprises three refractory pieces: (1) a monolithic central block with a hole for the passage of molten metal and (2) upper and lower wedge supports for the central block. The purpose of the assembly is to position the taphole between p... | 05/11/1982 |
| 4325540 | Apparatus for supplying fluids to a converter An apparatus for supplying fluids to a converter has a rotary joint coupled to a trunnion shaft, one end of the rotary joint being connected to fluid supply pipes and the other end to fluid conduits communicating with tuyeres at the bottom of the converte... | 04/20/1982 |
| 4294432 | Method and apparatus for cooling BOF hood paneling A method and apparatus for making steel in a basic oxygen furnace installation, in which water is sprayed from a central location within and at the open end of an exhaust hood 12 outwardly toward the inside hood surface to cool the hood and wet the off-ga... | 10/13/1981 |
| 4278241 | Top cone cooling system for basic oxygen furnace An improved basic oxygen furnace with an internally insulated metal shell having a bottom, wall and top conical portion, with the improvement comprising a plurality of cooling liquid metal walled heat-exchange passages, adjacent the top conical portion ex... | 07/14/1981 |
| 4275871 | Metallurgical vessel and supporting means A metallurgical vessel has upper and lower brackets which engage a trunnion ring for support along inclined surfaces whose total vertical angle has a tangent equal to the growth of the vessel radially in the region of its said brackets to the elongation o... | 06/30/1981 |
| 4239193 | Converter bottom fastening arrangement A converter bottom fastening arrangement to be used in a converter construction with a removable converter bottom fastened to the converter jacket, or a supporting construction connected therewith, includes a plurality of peripherally arranged rocker-shap... | 12/16/1980 |
| 4218049 | Metallurgical vessel A metallurgical vessel has releasably coupled, semicylindrical upper and lower sections arranged such that the axis of revolution of one section lies in a plane normal relative to the rotational axis of the other. The dimension of each section in the axia... | 08/19/1980 |
| 4195824 | Jig for tension elements for metallurgic vessels, particularly alternating converters The invention refers to a jig clamping device for tension elements for metallurgic converters, particularly alternating converters which are cocked or tightened at their vessel bearing projections or extensions against the corresponding counterbearings of... | 04/01/1980 |
| 4149706 | Slag shield for a steel converter Slag shield for a steel converter, comprising a ring of conically set segments around the upper end of the converter. The conically set segments are each provided with two hook-carrying brackets. The hooks near the lower end of the slag shield catching ar... | 04/17/1979 |
| 4128233 | Converter-bottom-fastening mechanism A converter bottom-fastening mechanism to be used in a converter construction with a removable converter bottom, a converter jacket and a supporting construction connected to the converter jacket. The bottom-fastening mechanism includes a plurality of roc... | 12/05/1978 |
| 4047708 | Detachable lip ring for steelmaking converter The lip ring on an oxygen steelmaking converter is detachably connected to the top cone of the converter to permit the lip ring to be removed from the top cone when the former becomes damaged, as during deskulling operations. The connection between the li... | 09/13/1977 |
| 4040611 | Device for clamping the base plate of a steel refining converter A device for clamping the base plate of a steel refining converter against a plate support ring attached to the casing of the converter comprises a plurality of rotatable brackets arranged to be beneath and around the circumference of the plate, each brac... | 08/09/1977 |
| 3999977 | Method for controlling the injection of flux into a steelmaking vessel as a function of pressure differential This invention is directed to a method and apparatus for controlling the injection of flux into a steelmaking vessel as a function of the differential pressure between the flux containing tank and the main conduit which supplies oxygen to the tuyeres of t... | 12/28/1976 |
| 3948644 | Steel making vessel with dust recycling method and means The flue gases from a steel refining furnace or vessel are delivered to a gas cleaning system in which the dust is removed and collected in slurry form. The slurry is dried and reduced to dust again after which it is delivered to a storage vessel. The dus... | 04/06/1976 |
| 3934863 | Apparatus for refining molten metal and molten metal refining process Apparatus suitable for injecting fluids, particularly suspensions of solids in gases, below the surface of a molten metal, e.g. in emulsion metallurgy, comprises a converter having a tuyere for injecting the fluid below the surface of the molten metal, an... | 01/27/1976 |
