Abstract: A metallurgical vessel having support brackets mounted on a vessel wall. The support brackets are mounted by a mounting system on a support body that does not completely surround the circumference of the vessel. The mounting system includes clamps that act on the support brackets. A coupling device is provided, which has, a first coupling component designed as a male part mounted on the support body and a second coupling component designed as a female part mounted on the vessel wall. The first and second coupling components are configured and arranged so as to automatically engage when the clamps are in the engaged position and to automatically disengage when the clamps are not in the engaged position. The coupling device has sealing elements and a coupling mechanism of the first coupling component relative to the second coupling component.

Abstract: 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 metal and slag to the sealing flange is prevented without using any flange cover. A sealing flange (10) is formed on the outer surface of the refining furnace (1) at a position on a conical part (8) extending between the furnace throat (9) and a straight body part or on the straight body part. A slag-stopping dummy flange (11) is formed on the outer surface of the refining furnace (1) at a position between a furnace throat (9) and the sealing flange (10). The slag-stopping dummy flange (11) has an outer circumference lying on the inner side of the inner circumference of a sealing cover (4) and on the outer side of the inner circumference of a lower end part of a dust collecting hood for atmospheric refining.

Abstract: 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 while steel making materials are continuously charged into the electric furnace. The tapped molten steel is delivered to a ladle supported by a conveying car. The conveying car is moved to a position associated with a continuous casting machine. The ladle containing the molten steel is moved from the conveying car to a position above a tundish of the continuous casting machine and the conveying car is then returned to the electric furnace. The molten steel is poured from the ladle into the tundish. All of the steps are continuously controlled and coordinated by a master controller.

Abstract: 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 carried out.

Abstract: 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 during refining.

Abstract: 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 during refining.

Abstract: 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 opening of the vessel. Treating material is injected into the molten metal through the central conduit of the tuyere and a coolant is passed through the outer annular conduit of the tuyere. After completion of the treatment, oxygen is blown through both the central conduit and the annular conduit to burn back the tuyere, opening the nozzle well for pouring.

Abstract: 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 angles with the noted horizontal axis, two annular rows of support elements such as rollers are mounted on the trunnion ring and engaged with respective annular tires on the vessel so as to bear its radial load. Two other annular rows of rollers or like support elements are also mounted on the trunnion ring and engaged with the respective tires so as to bear the axial vessel load. Several identical drive mechanisms are compactly mounted within the trunnion ring for revolving the vessel through a gear drive, friction drive, or chain drive.

Abstract: 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 ring situated in immediate proximity to the refractory side wall. The injectors are preferably concentrated opposite the journals. Secondary injectors are, also preferably, provided in the bottom zone, intermediate between the ring and the center of the crucible.The invention makes it possible, in relation to the prior injection practice, to reduce the rate of dissolution of the agitating gas in the molten metal and then makes it possible to use a low-cost agitating gas, such as nitrogen, without risk of excessive nitridation of the bath.

Abstract: 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.

Abstract: 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 parallel layers of lining brick with the metal conducting hole at an angle to the lining brick surfaces. The assembly is installed by supporting the central block on a counterweighted bar in position in the furnace, and constructing the furnace lining around the assembly.

Abstract: 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 converter. The rotary joint comprises a fixed casing and a rotary assembly, that is sealedly and rotatably fitted in the casing and connected to the trunnion shaft. The rotary assembly has a cylindrical member fitting in the casing. A plurality of axially spaced, circular communication grooves are provided in at least one of the internal surface of the casing and the external surface of the cylindrical member. The cylindrical member is provided with a passageway which opens into the communication grooves at one end and into the atmosphere where the cylindrical member emerges outside the casing at the other.

Abstract: 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-gases during a blow. A ring-like spray manifold 22 is supported on an oxygen lance 14 for automatic insertion to the proper location in the hood, for removal with the lance, and for automatic operation concurrently with the supplying of oxygen.

Abstract: 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 exterior surface, substantially aligned like element lines of a conical surface; a header to supply a cooling liquid so that it flows upwardly in all of the passages; and a header to withdraw cooling liquid, from the upper end of the passages, away from the surface which is being cooled.

Abstract: 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 of that portion of the vessel between the brackets.

Abstract: 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-shaped clamping levers which are displaceable into and out of an engagement position with the converter bottom. The outer ends of the levers facing the converter jacket are supported with respect to the converter jacket or the supporting construction by means of bracing devices. Guide elements are provided on the bracing devices and a curved guideway is provided on the converter by which the bracing devices are guided between a vertical bracing position and a released position along the curved guideway.

Abstract: 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 axial direction being the same as the dimension of the other section in the direction normal to the axis. The vessel is mounted for rotation about the axis of the lower section and an elongate charging mouth is formed in the upper section and is arranged with its major axis parallel to the axis of the lower section. A plurality of tuyeres extend through the lower section of the vessel and each tuyere includes a first tuyere pipe for injecting oxygen beneath the level of molten metal within the vessel, a second tuyere pipe disposed in surrounding relation to the oxygen pipe for injecting powdered materials entrained in a nonoxidizing gas and a third pipe surrounding the second pipe for injecting a hydrocarbon shielding fluid.

Abstract: 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 the annular support or frame for the vessel with at least one tension element, consisting of a hydraulic piston-cylinder unit transmitting tensile force onto the tension element.

Abstract: 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 around horizontal bars which are connected around and to the converter. Each segment is held with its upper edge close against the converter vessel by fastening means, which are locally provided on the vessel wall. The fastening means allow for small displacements of the segment in its own plane.

Abstract: 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 rocker-like clamping levers peripherally arranged about the converter bottom and fastened to the converter jacket or to the supporting construction. The levers are axially movable into and out of engagement with the converter bottom. Bracing devices are provided to support the ends of the clamping levers facing the converter jacket with respect to the converter jacket or the supporting construction.

Abstract: 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 lip ring and the top cone is made by swing bolts that are pivotally mounted to the top cone and the flange interface that effects the connection between the lip ring and the top cone is conically formed to eliminate the development of shear stresses in the bolts such that smaller and fewer bolts can be employed to reduce the costs attendant with, and the time required for, replacement of the lip ring.

Abstract: 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 bracket being rotatable on a metal spindle passing through two parallel support flanges attached to the ring, and having a first shoulder with a very hard surface to be pressed against the base plate when the base plate is clamped in position, and an internally threaded second shoulder into which is screwed a retaining screw at the end of which is a ball which, when the base plate is clamped in position, engages in a semi-cylindrical groove in a metal bolt which engages in openings formed in each of said support flanges.

Abstract: 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.