Abstract: A rotating spindle shaft is used as a valving mechanism for dispensing finite quantities of fluidized alkaline metals at regular spaced intervals into a reaction chamber for hydrolyzation to produce intense discrete surges of direct current flow.

Abstract: A closing plate for a sliding closure on the spout of a receptacle for molten metal, especially of a converter, includes an elongate refractory plate and a sheet metal jacket surrounding the same. The refractory plate has a sliding surface which can be braced with a sliding surface of a refractory closure plate interacting therewith or with a sliding surface of a refractory head part. The refractory plate has at least one tapering section which forms an angle with the sliding surface on at least one side delimiting the sliding surface, each tapering section being associated with a section of the refractory plate that projects beyond the sheet metal jacket. The closing plate reduces the risk of damage to the front faces of the refractory parts reduced during bracing of the parts with each other and/or during a relative adjustment of the refractory parts that are braced with each other.

Abstract: In a closure plate for a slide closure on the spout of a container containing molten metal two outer longitudinal sides, a flow-through opening (21) disposed on a central longitudinal axis (A) of the closure plate (20) and a closing surface (S) passing from the latter are provided. There are formed on each of these two outer longitudinal sides at least two shoulder surfaces (20a, 20b) serving as clamping surfaces or as centring surfaces of the closure plate (20) which are at an angle (?, ?) to the longitudinal axis forming tapering of the plate. At least on the shoulder surfaces (20a) on the side of the closing surface (S) adjoining outer sides (20c; 30c) are provided which are respectively at a smaller angle (?) to the longitudinal axis (A) than those of the shoulder surfaces (20a).

Abstract: The injection chamber (CI) includes a tubular body formed by a supply portion, having a radial supply window to receive a charge of molten metal (MF) and in which is incorporated an injection portion provided with an outlet end opened to the interior of a molding cavity. A piston is provided to be displaced in the interior of the tubular body to inject the molten metal (MF) in the molding cavity. The supply portion has its inner region, which receives the pouring impact of the charge of molten metal (MF), lined by an insert formed in a high melting point material and presenting an inner contour in the form of a circle arc coinciding with that of the supply and injection portions.

Abstract: A refractory nozzle assembly comprising a vessel operable to contain a molten metal and having at least one outlet. The assembly includes an inner assembly having an aperture extending therethrough and an outer assembly having an aperture extending therethrough. The inner and outer assemblies are arranged in the outlet of the vessel and are arranged for relative lateral movement such that inner and outer assemblies are operable to move between an open configuration, where the apertures therethrough are generally overlapping, and a closed configuration, where the apertures are not overlapping. The junction between the inner and outer assemblies is located within a periphery of the vessel.

Abstract: A stopper body of refractory material and cylindrical shape having a first end (10), a second end (14) and an intermediate zone (12) there between, with a bore (16) of circular cross section, extending from said first end (10) in an axial direction of the stopper body into said intermediate zone (12) towards the second end (14), wherein the said bore being provided with an enlarged cross section (at 16s) along at least part of said intermediate Zone (12).

Abstract: An improved multi fluid dispenser for simultaneous dispensing of a plurality of fluids shown and described. The dispenser includes a controller that is linked to a coordinator board. The controller has a memory with a plurality of recipes stored in the memory. A coordinator board is linked to a first module. The first module may include one or two pumps, each connected to a fluid reservoir. The module is then linked in series to a plurality of other modules as well as a manifold module. Each module includes a module board for controlling the pump or pumps of that module. The controller, coordinator board and module boards are all programmed for the simultaneous or sequential pumping of multiple fluids from the reservoirs through outlet nozzles of the manifold in accordance with a recipe selected by the user and retrieved from the memory of the controller.

Abstract: In a slide valve closure for the casting of a metal melt a slider plate and a stationary closure part are braced against each other by means of spring units or by other means. There is provided a casing framework attachable to a mould or the like, in which is fixed a detachable casing part on which the spring units are held and in which the stationary closure part and the slider plate can be accommodated. This allows safe operation and simple and rapid mounting and dismounting of the slide valve closure.

Abstract: The invention relates to a device for producing steel. The invention device comprises a container (1, 101, 201). The metal used is molten, blown and refined in said container which comprises an upper component (5, 205) having at least one opening, a lower component (2, 202) and means for tapping the melt and slag from the container. Electrodes (21) can be charged into the container through said opening. The aim of the invention is to improve said device in such a way that said device can be constructed in a more simple manner in comparison with known devices. A bottom tapping system is provided for tapping the melt and optionally the slag.

Abstract: During a casting operation a teeming ladle is moved relatively horizontally in the X direction and vertically in the Z direction and pivoted about rotational axis A. Thus it becomes possible during automatic casting always to maintain the theoretical fulcrum of the spout about which the teeming ladle is pivoted while maintaining a safety margin between the teeming ladle and the mold at the lowest possible position.

Abstract: In a method for closing and opening a tapping hole of a metallurgical vessel, in which method a closure body (4), which leaves clear an annular gap between the closure body (4) and the wall of the tapping hole, can be moved out of a waiting position (I) into a closure position (II), in which it covers the tapping hole, and back, and in which method, at least in the closure position (II), a pressurized gas is introduced into the tapping hole counter to the outflow direction of a molten material contained in the metallurgical vessel, in order to avoid skull formation, the closure body (4) is moved out of the waiting position (I) into the closure position (II) and back with directions of movement which lie in different areas.

Abstract: Molten metal is delivered from a master furnace to the molten metal holding chamber of a low pressure casting machine by a launder assembly having a unitary, quickly replaceable, valve assembly including a valve which, when closed, prevents flow of the molten metal from the master furnace to the holding vessel. The valve has a plug mounted for rotation in a valve body which may be made from graphite. In a modification, the valve has a port centered in a valve plate and a movable plug which may be made from aluminum titanate. In operation, the valve is opened to permit the molten metal within the master furnace and the holding vessel to seek a substantially uniform level and closed when the low pressure casting process is initiated. While the valve is closed, a pressurizing gas is introduced into the holding vessel above the level of the molten metal therein so that molten metal will rise up a riser tube into the cavity of a mold or other molten metal-receiving member.

Abstract: A discharge assembly for controlling the discharge of molten metal from a vessel includes a stator member mounted to extend through the vessel and a rotor member coupled to the stator member to be rotatable relative thereto. A lateral opening in the rotor member is brought into and out of alignment with a lateral opening in the stator member, thereby opening communication to a longitudinal discharge passage through the stator member. One of the members has a projection fitting into a recess in the other member, with complementary sliding sealing surfaces therebetween. The projection comprises an insert formed separately from the respectively member and fixed thereto to be non-rotatable relative thereto.

Abstract: An immersion nozzle includes an immersion zone inserted into a long-thin mold cavity of a mold. A discharge channel extends through the nozzle for discharging molten metal into the mold cavity. The discharge channel includes an inlet region, an outlet region including a portion passing through the immersion zone, and a pool-forming chamber between the inlet region and the outlet region at a location adjacent the immersion zone. The portion of the outlet region of the discharge channel that extends through the immersion zone is widened and has a configuration to approximate the cross-sectional configuration of the mold cavity. The outlet region has, extending from the chamber in a direction of material flow, a configure approximately corresponding to the configuration of the portion of the outlet region through the immersion zone.

Abstract: A vessel, for example a metallurgical tundish for multi-strand casting, has at least one discharge assembly/block. Such assembly includes a refractory perforated brick fitted in the vessel, the perforated brick having therethrough an opening that is at least partially defined by a surface that is rotationally symmetrical about a longitudinal center axis of the opening. A refractory nozzle brick has a peripheral surface that is rotationally symmetrical about a longitudinal center axis of the nozzle brick. The nozzle brick has therethrough a discharge opening that is located eccentrically of the longitudinal center axis of the nozzle brick. The nozzle brick fits into the opening in the perforated brick with the longitudinal center axes thereof coincident, such that the nozzle brick is rotatable relative to the perforated brick about a rotation axis that is defined by the coincident longitudinal center axes.

Abstract: An apparatus for closing and/or regulating the discharge or tapping of molten metal from a metallurgical vessel is formed by a ceramic stator member to be fixed to a metallurgical vessel and having a pipe-shaped portion having extending therethrough at least one lateral opening, and a ceramic rotor member having a pipe-shaped portion having extending therethrough at least one lateral opening. The stator and rotor members are coaxially assembled with the pipe-shaped portion of one member fitted over and surrounding the pipe-shaped portion of the other member. The pipe-shaped portions have radially confronting respective cylindrical inner and outer sealing surfaces onto which open the lateral openings, such inner and outer sealing surfaces sealingly engaging to define a primary seal to prevent leakage of molten metal. The stator and rotor members have respective axially confronting end sealing surfaces. The rotor member is axially movable, i.e.

Abstract: A regulating device for regulating the flow of molten metal from metallurgical vessel includes an inner tubular part which is fixed to the metallurgical vessel and defines at least one through-hole, and a movable outer tubular part rotatably and/or slidably mounted to the metallurgical vessel and extending around the tubular inner part. The tubular outer part terminates at a bottom edge constituted by a contiguous land extending around the tubular inner part. The tubular outer part can be slid and/or rotated between open and closed positions at which the through-hole of the tubular inner part is opened and closed, respectively. To prevent plugs of molten metal from hardening in the at least one through-hole of the tubular inner part, the bottom edge of the tubular outer part is designed so that a portion of the land thereof passes across the at least one through-hole when the tubular outer part is moved between the open and closed position.

Abstract: An apparatus for closing and/or regulating the discharge or tapping of molten metal from a metallurgical vessel includes a refractory outer pipe member having therethrough a discharge passage defining outer and inner openings and a refractory inner pipe member positioned within the outer pipe member, the inner pipe member having therethrough a passage defining outer and inner openings. A first of the pipe members is movable with respect to a second of the pipe members between open and closed positions. In the opened position, the discharge passages of the pipe members are aligned to define a molten metal discharge channel for passage therethrough in a flow direction of molten metal from an inlet opening to an outlet opening of the discharge channel. The cross-sectional area of the discharge channel is a minimum at the inlet opening and is increased between the inlet opening and the outlet opening.

Abstract: A shut-off and control valve is used in regulating the discharge of molten metal from a metallurgical vessel into a continuous casting plant for continuous casting of a sheet, strip or slab having a relatively wide width dimension with respect to thickness dimension. The valve includes an elongated refractory stator having therein an elongated recess defined by a cylindrical inner surface. The stator has therethrough an elongated slot-like discharge channel, and the stator is mounted adjacent an elongated outlet opening of a metallurgical vessel. An elongated refractory rotor is rotated about a longitudinal axis and has a cylindrical peripheral outer surface arranged symmetrically about such axis and complementary to the inner surface of the stator. The rotor has therethrough an elongated slot-like flow channel.

Abstract: A shut-off and control valve is used in regulating the discharge of molten metal from a metallurgical vessel into a continuous casting plant for continuous casting of a sheet, strip or slab having a relatively wide width dimension with respect to thickness dimension. The valve includes an elongated refractory stator having therein an elongated recess defined by a cylindrical inner surface. The stator has therethrough an elongated slot-like discharge channel, and the stator is mounted adjacent an elongated outlet opening of a metallurgical vessel. An elongated refractory rotor is rotated about a longitudinal axis and has a cylindrical peripheral outer surface arranged symmetrically about such axis and complementary to the inner surface of the stator. The rotor has therethrough an elongated slot-like flow channel.

Abstract: An apparatus for closing and/or regulating the discharge or tapping of molten metal from a metallurgical vessel includes a ceramic stator member to be fixed to a metallurgical vessel and having a pipe-shaped portion having extending therethrough at least one lateral opening, and a ceramic rotor member having a pipe-shaped portion having extending therethrough at least one lateral opening. The stator and rotor members are coaxially assembled with the pipe-shaped portion of one member fitted over and surrounding the pipe-shaped portion of the other member. The pipe-shaped portions have radially confronting respective cylindrical inner and outer sealing surfaces onto which open the lateral openings, such inner and outer sealing surfaces sealingly engaging to define a primary seal to prevent leakage of molten metal. The stator and rotor members have respective axially confronting end sealing surfaces. The rotor member is axially movable, i.e.

Abstract: The refractory block arrangement for a rotary slide valve closure for metal melt containers having a bottom discharge, which arrangement comprises a refractory top block; a refractory rotatable frustoconical discharge block having a discharge flow channel having a vertical central axis that coincides with the central axis of the flow channel of the top block, and an axis of rotation extending at an acute angle to the vertical central axis of the discharge flow channel and intersecting the vertical central axis at a point lying in a cross-sectional plane of the discharge opening; and further comprising a drivable annular entraining casing rotatably supported in the slide valve casing of the rotary slide valve closure for supporting the frustoconical discharge block.

Abstract: A rotary valve for controlling the discharge of molten metal from a metallurgical vessel includes a refractory rotor having a cylindrical outer peripheral surface and fitted within a recess defined by a cylindrical inner surface in a refractory stator and complementary to the outer surface. The rotor may be rotated about either a horizontal or a vertical axis relative to the stator and may be axially moved within the recess therein. The rotary valve may be mounted on the exterior of a bottom wall of a metallurgical vessel or alternatively may be mounted within a refractory lining of the metallurgical vessel, particularly in a transition area between a side wall and a bottom wall of the metallurigcal vessel. Further alternatively, the rotary valve may be mounted within the refractory lining of the bottom wall of the metallurgical vessel, with the rotor extending through the bottom wall and being actuated for movement from below the bottom wall.

Abstract: A refractory shutoff assembly for controlling the discharge of molten metal from a metallurgical vessel includes a refractory inner pipe to be fixedly mounted in a bottom of the vessel, such inner pipe having therethrough at least one opening at a position to be above the vessel bottom. A refractory outer pipe is mounted about the inner pipe and has therethrough at least one opening. The outer pipe has a lower end with an annular end surface. The outer pipe is movable relative to the inner pipe axially thereof between an open position, whereat the opening in the outer pipe aligns with the opening in the inner pipe, and a closed position, whereat such openings are isolated to block molten metal discharge.

Abstract: In a rotary nozzle of the type attached to the bottom shell of a molten street vessel and designed so that a rotor having a sliding plate brick mounted thereon is rotated by a motor through a reducer and gearing to adjust the degree of opening of a nozzle bore and thereby to control the pouring rate of molten steel, the rotation of the rotor is effected by hydraulic cylinders in place of the reducer, gearing and motor. Thus, there is the effect of providing a rotary nozzle which is small in size, light in weight and low in cost.

Abstract: A rotary valve for controlling the discharge of molten metal from a metallurgical vessel includes a refractory rotor having a cylindrical outer peripheral surface and fitted within a recess defined by a cylindrical inner surface in a refractory stator and complementary to the outer surface. The rotor may be rotated about either a horizontal or a vertical axis relative to the stator and may be axially moved within the recess therein. The rotary valve may be mounted on the exterior of a bottom wall of a metallurgical vessel or alternatively may be mounted within a refractory lining of the metallurgical vessel, particularly in a transition area between a side wall and a bottom wall of the metallurgical vessel. Further alternatively, the rotary valve may be mounted within the refractory lining of the bottom wall of the metallurgical vessel, with the rotor extending through the bottom wall and being actuated for movement from below the bottom wall.

Abstract: A valve for controlling the discharge of molten metal in a substantially downward direction from a metallurgical vessel has an outer valve part defining an inlet of the valve and an outlet port of the valve, and a refractory inner valve part disposed within the outer valve part in a sealing relationship therewith. The inner valve part has a groove extending therein at the outer peripheral surface which is communicable with the inlet and the outlet port of the outer valve part when the valve is in an open position. The provision of the groove at the outer peripheral surface of the inner valve part does not result in any significant reduction in strength of the inner valve part.

Abstract: A discharge control device is presented which includes a variable opening formed between two cylinders with parallel axes. The cylinders are mounted between two symmetrical support blocks having bores and are spaced at a distance equal to the sum of their radii. At least one of the cylinders has an external cut-out which, upon rotation of the two cylinders, defines the variable opening. The cylinders are in the form of discs with an axial thickness wherein the cut-out extends over the whole thickness. The discharge control device controls the flow of molten materials.

Abstract: In casting thin metal strip or foil by dynamic casting in which molten metal is teemed from a crucible 13 onto a moving belt or wheel, the invention provides an outlet orifice control assembly arranged to define a slot of controlled width through which the metal flows from the crucible outlet 20. The assembly comprises opposed shut-off plates 28,29 extending between edge strips 26,27, and underlying these are opposed slot plates 32,33 extending between second edge strips 30,31 with opposed support strips 34,35 extending beneath the strips 30,31 and supporting the edges of the slot plates 32,33. The sets of plates are aligned and arranged so that one plate 29 and 33 is movable relative to the other respective plate 28 and 32 between closed and open positions for controlled flow of metal through a sized slot defined between the slot plates 32,33.

Abstract: In order to resist alteration of the spring forces utilized for applying seal pressure between the valve bodies in sliding gate valves for molten metal pouring, particularly those of the manually operated type, the valve support plate and the mounting plate are arranged to form a narrow slot that receives the valve actuator and presents insufficient clearance to permit excessive relative displacement between the valve members. The valve further incorporates releasable attachments, two of which serve as hinge connections for the support plate while the other serves as a latching member. Each of the attachments comprise clevis-mounted eyebolts in which the clevises have predetermined dimensions to establish a fixed, pre-set distance between the plates upon reassembly of the valve after opening and thus insure repeatability of the spatial relationships between the valve bodies and, concomitantly, of the seal pressure between the members.

Abstract: High alumina slide gate compositions comprising aluminous grain, carbonaceous material, high purity alumina, silicon metal and resin.

Abstract: A sliding rotary nozzle assembly for pouring of molten steel has a bottom plate brick and a sliding plate brick, with these plate bricks being arranged as dual doors that may be opened and closed as desired relative to a base plate that includes a flow nozzle. Each of the brick plates is provided with plural nozzle openings and is carried for rotation with the bottom plate brick being positioned on top of the sliding plate brick when the doors are closed. In case of damage to nozzle opening of the rotary bottom plate brick, the dual doors are opened and the bottom plate brick is then rotated to bring the remaining nozzle opening to the use position to make best use of the bottom plate brick and prolong the service life of the nozzle assembly.

Abstract: Metal flow from furnace taphole to a pouring trough is controlled by a valve interposed therebetween, the valve having a stationary orificed valve plate and a companion slide plate for closing or opening the orifice to flow. An actuating beam member forming part of a parallel motion linkage extends upwardly and obliquely from the slide plate, the actuating member being thrust against the slide plate by a swinging spring strut of the linkage. A ram connected to the linkage via a crank, a shaft and a pivoted lever displaces the linkage when extended or contracted and this moves the actuating member along a predetermined path, its oblique attitude being preserved, to open or shut the valve.

Abstract: A head or slide plate for a molten-metal slide gate is formed by a refractory plate having an opening and a refractory ring positioned in the opening, with a ring of tar between the peripheries of the opening and refractory ring and which is isolated from the plate surfaces excepting for a passage filled with a porous refractory and through which the vaporized tar migrates to one of the slide surfaces when the plate and ring are heated by contact with the molten metal.