Abstract: A molten metal rotor receives and retains an end of a molten metal rotor shaft. The rotor shaft has one or more projections at the end received in the rotor. The rotor has an inner cavity, a top surface with an opening leading to the inner cavity, and at least one abutment. The opening includes one or more portions for allowing each projection to pass through the opening and into the inner cavity. The rotor and/or shaft are then rotated so at least one of the outwardly-extending projections is under the top surface of the rotor and is against an abutment. A molten metal pump, rotary degasser scrap melter or other device used in molten metal may utilize a rotor/shaft combination as disclosed herein.

Abstract: A system of obtaining an aluminium melt including SiC particles for use when moulding vehicle parts, e.g. brake disks, the system comprises a pre-processing tank (2), configured to receive SiC particles and to apply a pre-processing procedure to pre-process the SiC particles; a SiC particle transport member (4) configured to transport the pre-processed SiC particles from the pre-processing tank (2) to a crucible (6) of a melting furnace device (8), and the melting furnace device (8) is configured to receive and melt solid aluminium, e.g. aluminium slabs, and to hold an aluminium melt (10) and to receive said pre-processed SiC particles (12).

Abstract: Submerged combustion burners having a burner body and a burner tip connected thereto. The burner body has an external conduit and first and second internal conduits substantially concentric therewith, forming first and second annuli for passing a cooling fluid therethrough. A burner tip body is connected to the burner body at ends of the external and second internal conduits. The burner tip includes a generally central flow passage for a combustible mixture, the flow passage defined by an inner wall of the burner tip. The burner tip further has an outer wall and a crown connecting the inner and outer walls. The inner and outer walls, and the crown are comprised of same or different materials having greater corrosion and/or fatigue resistance than at least the external burner conduit.

Abstract: Systems, methods, and apparatus for treating a molten metal are provided. A metal treatment system, comprising: a wire feeding subsystem; and a cored wire; wherein the wire feeding subsystem feeds the cored wire into a metal bath at a controlled wire feed rate, and wherein the metal bath comprises a molten metal; wherein the cored wire comprises: a consumable outer sheath having a tubular cross section; and a core fill material coupled to an inner surface of the outer sheath, wherein the core fill material comprises a refining agent for refining the molten metal; and wherein the refining agent reacts with the molten metal, thereby causing an impurity to be removable from the metal bath.

Abstract: The dual-function impeller can be rotated in molten metal in a direction of rotation, as part of a rotary injector. The impeller can have a body having an axis, a plurality of blades circumferentially interspaced around an axis, and an aperture coinciding with the axis. The blades having both a radially extending portion facing the direction of rotation and collectively generating a radial flow component upon said rotation, and a slanted portion also facing the direction of rotation, inclined relative to a radial plane, and collectively generating an axial flow component directed away from the rotary injector upon said rotation.

Abstract: A dry chemical closed recovery system for servicing fire extinguishers including first and second tanks, ball valves, and a pressure relief valve. The dry chemical closed recovery system accepts the high-pressure discharge from a dry chemical fire extinguisher and refills the fire extinguisher with dry chemical using low pressure. By manipulating the ball valves, the fire extinguisher can be refilled incrementally or all at once.

Abstract: A vortex chamber includes an outer circumference wall, a container, an annular shoal portion provided between the container and the outer circumference wall so as to encircle the outer circumference of the container, and a dam portion protruding upward from the upper surface of the outer circumference of the container so as to partition the container from the shoal portion. An undried nonferrous metal block is fed into the shoal portion, the block having such a size that is not completely submerged into the molten metal in the shoal portion. The fed nonferrous metal block is gradually melted to have a reduced volume of small pieces and particles of nonferrous metal, which are re-circulated in the shoal portion, flown over the dam portion, and dropped into the container, thereby forming a vortex in the container in which remaining small pieces and particles submerged into the molten metal are melted.

Abstract: A transportable vessel that is not connected to a reverbatory furnace and can be moved to different locations. The vessel includes a transfer conduit. A molten metal pump can be positioned in the transfer conduit to move molten metal out of an outlet in communication with the transfer conduit. The molten metal can be transferred out of the transportable vessel and into another structure without the need to tip or tilt the transportable vessel.

Abstract: A method and device for treating a metal or a molten metal alloy using an addition agent, wherein the addition agent is deposited in a local cavity arranged at the bottom of a treatment ladle and surrounded by a protruding wall, and a closing member connected to movement means is able to form, with the bottom of the treatment ladle, in a low insulating position, a chamber including said local cavity and comprising an intermediate annular space around the small wall. Application to the treatment of a molten cast iron using pure magnesium or magnesium alloy.

Abstract: A solids injection lance includes (a) a tube that defines a passageway for solid feed material to be injected through the tube and has an inlet for solid material at a rear end and an outlet for discharging solid material at a forward end of the tube and (b) a puncture detection system for detecting a puncture in the solids injection tube.

Abstract: A pet fountain assembly that includes a cover with a drinking bowl formed therein that straddles a sidewall of a basin that can be user-provided enclosing a pump within a pumping chamber defined therebetween. The cover has a downwardly extending sidewall divided by openings that can be generally U-shaped or V-shaped into a plurality of supports on which the cover. In a preferred embodiment, one of the supports is disposed outboard the basin sidewall resting on the ground and another one of the supports is disposed inboard the basin sidewall resting on a bottom of the basin providing a water passage enabling water from the basin to reach the pump. The inboard support can provide an overflow spillway as well as define a shroud disposed between the pump and water in a lower drinking bowl of the basin. The basin can include an outwardly offset seat that locates the pump.

Abstract: A process for the production of a metal which comprises: carbothermal reduction of the corresponding metal oxide to produce a mixed gas stream comprising the metal and carbon monoxide; maintaining the mixed gas stream at a suitably elevated temperature to prevent reformation of the metal oxide; ejecting the mixed gas stream through a convergent-divergent nozzle in order to cool the mixed gas stream instantaneously to a temperature at which reformation of the metal oxide cannot take place; and separating and collecting the metal, wherein the nozzle is heated by means other than gas flow through the nozzle so that temperature of surfaces of the nozzle in contact with the mixed gas stream are maintained at a temperature sufficient to prevent deposition on the said surfaces of products from the gas stream.

Abstract: An exemplary furnace system for melting stock metal includes a main hearth and a side well subsystem, which includes a melting well disposed downstream of the main hearth for receiving flow from the main hearth, an input flow inducer disposed upstream of the melting well and downstream of the main hearth, and an output flow inducer disposed downstream of the melting well and upstream of the main hearth. The input flow inducer drives molten metal into the melting well, thereby forming a differential metal head in the melting well. The output flow inducer evacuates molten metal from an output conduit, thereby reducing counter-pressure at an output port of the melting well communicating with the output conduit. This allows atmospheric pressure to add to the differential metal head in the melting well, resulting in an increase in productivity of the side well subsystem and of the furnace system as a whole.

Abstract: An apparatus of adding high vapor pressure magnesium to a steel liquid, includes a magnesium additive device and a tube furnace. The magnesium additive device includes a storage barrel, a conveying pipe, a control valve, and an insertion tube. A method of adding high vapor pressure magnesium to a steel liquid, includes placing the magnesium additive device in the tube furnace, and delivering pure magnesium particles into the storage barrel. When the temperature at the mediate lower position of the conveying pipe is increased to reach a preset value, the control valve is opened to pour the pure magnesium particles into the conveying pipe to form a magnesium vapor, and an argon regulating valve is opened to introduce the argon into the conveying pipe so as to add the magnesium vapor to a steel liquid by carrying of the argon.

Abstract: A material supply apparatus and process for co-injecting heated solid metalliferous material and solid carbonaceous material via a solids injection lance into a direct smelting vessel are disclosed.

Abstract: Disclosed is a transportable vessel for use in a factory for processing molten metal. The vessel is not connected to a reverbatory furnace and can be moved to different locations in the factory. The vessel includes a transfer conduit in communication with a cavity of the vessel. A molten metal pump can be positioned in the transfer conduit to move molten metal out of an outlet in communication with the transfer conduit and into another vessel without the need to tip or tilt the transportable vessel.

Abstract: A spreading device (10) for the spreading of bulk material on a circular surface comprises a distribution plate (12) mounted about a central shaft (14); at least one radially extending slit (16) arranged in the distribution plate (12); and a scraper device (24) for spreading the bulk material over the length of the slit (16). The bulk material is preferably granular or powdered covering material to be deposited as an insulation layer on the top layer of a casting mold containing molten steel or metal. According to the present invention, a rectangular distribution trough (22) mounted on the distribution plate (12), the slit (16) being arranged within the distribution trough (22). Furthermore, a feed pipe (30) is arranged so as to feed bulk material into the distribution trough (22) onto an area corresponding to the rotational center (18) of the distribution plate. The slit (16) extends from the rotational center (18) of the distribution plate (12) to the edge (20) thereof.

Abstract: Disclosed are degassers, couplings, impeller shafts and impellers for use in molten metal. One such coupling transfers gas into an impeller shaft, the coupling having a smooth, tapered internal surface to align with a corresponding surface on the impeller shaft and help prevent gas leakage and to assist in preventing damage to the impeller shaft. Improved impellers for shearing and mixing gas are also disclosed, as is a degasser including one or more of these components.

Abstract: A heating module for heating solid matter, such as balls, to a determined temperature. The module includes a heating pot including a crucible for receiving the matter to be heated, and a burner for heating the crucible and the matter to be heated; and a cover that is mounted in removable manner on the heating pot so as to close the crucible.

Abstract: A lance for feeding an additive wire into a quantity of molten metal below the surface of the molten metal. The lance has an inlet end which receives additive wire and an outlet end which dispenses the additive wire. The lance has an exterior sleeve of cardboard which has an inner surface. A portion of the inner surface of the exterior sleeve contacts an interior sleeve made of a refractory material. At the inlet end of the lance is a cardboard inlet outer sleeve and a cardboard inlet inner sleeve inside of the outer sleeve. The lance can have a coupling for fitting to a wire feeding apparatus.

Abstract: A ladle that can melt and freeze castable metal in a specific manner so that high quality liquid metal and metal alloys may be produced with minimum oxide and hydrogen content. Upon introduction of a quantity of molten metal into the ladle, staged heating and cooling of the molten metal promotes the liberation of previously-dissolved gases from the castable metal, resulting in significant decreases in as-cast porosity.

Abstract: Apparatus and methods for industrial-scale production of metal matrix nanocomposites (MMNCs) are provided. The apparatus and methods can be used for the batch production of an MMNC in a volume of molten metal housed within the cavity of a production chamber. Within the volume of molten metal, a flow is created which continuously carries agglomerates of nanoparticles, which have been introduced into the molten metal, through a cavitation zone formed in a cavitation cell housed within the production chamber.

Abstract: A material supply apparatus and process for co-injecting heated solid metalliferous material and solid carbonaceous material via a solids injection lance into a direct smelting vessel are disclosed.

Abstract: A material supply apparatus and process for co-injecting heated solid metalliferous material and solid carbonaceous material via a solids injection lance into a direct smelting vessel are disclosed.

Abstract: A melter gasifier of a smelting reduction installation is charged by bringing together coal-containing material in lump form and iron carrier material (which may be hot) before and/or while they enter the melter gasifier. The ratio of the combined amounts of iron carrier material and coal-containing material in lump form is variable. The combined amounts of iron carrier material and coal-containing material in lump form are distributed over the cross section of the melter gasifier by a dynamic distributing device, and the ratio of the combined amounts of the iron carrier material and coal-containing material in lump form is set depending on the position of the dynamic distributing device.

Abstract: A flux injector apparatus and method adapted to distribute a predetermined amount of flux to an associated pool of molten aluminum. The flux injector apparatus includes a pressurized tank adapted to store and feed the flux under pressure. A feed mechanism operative to discharge a predetermined amount of flux to an outlet and a controller for monitoring and operating the apparatus. The feed mechanism includes a housing having an inner wall defining a cavity with an inlet and an outlet. A feed wheel is positioned within the cavity and operative to receive a predetermined amount of flux from the inlet, translate the flux within the cavity and discharge the predetermined amount of flux through the outlet of the pressurized tank.

Abstract: Device and method for injecting solid material in particles, powder or granulated form, of varying grain size. The device comprises a tubular pipe which can be applied on a lateral wall of a melting furnace so as to dispose its exit end inside the volume of the melting furnace and above the meniscus of the liquid metal. The device also comprises a chamber or tank to contain the solid material and emitter means comprising valve means which can be selectively opened for an opening time in the range of tenths of a second, to introduce an impulsive jet of pre-compressed gas or air which, in coordination with the opening of an exit valve which can be selectively opened, disposed at one end of said pipe, determines the emission of an impulsive flow of the solid material contained in said chamber or tank, with high kinetic energy and quantity of motion.

Abstract: A lance for feeding an additive wire into a quantity of molten metal below the surface of the molten metal. The lance has an inlet end which receives additive wire and an outlet end which dispenses the additive wire. The lance has an exterior sleeve of cardboard which has an inner surface. A portion of the inner surface of the exterior sleeve contacts an interior sleeve made of a refractory material. At the inlet end of the lance is a cardboard inlet outer sleeve and a cardboard inlet inner sleeve inside of the outer sleeve. The lance can have a coupling for fitting to a wire feeding apparatus.

Abstract: A dual outlet injector is disclosed for use in a dual lance or dual port desulfurization station, whereby reagent from a given injector vessel may be injected into two separate supply pipes respectively corresponding to the dual lances or dual ports. The dual outlet injector enables a desulfurization station to be configured comprising only one supply vessel for powdered magnesium reagent and only one supply vessel for a carrier reagent such as powdered lime.

Abstract: A device for introducing dust into a molten bath of a pyrometallurgical installation is provided. An electrodeless plasma torch includes an essentially tubular housing, wherein the housing allows a passage of a carrier gas containing dust particles, and wherein the housing is coaxially surrounded by an inductive load coil which forms a heating zone.

Abstract: A ceramic foam filter for molten aluminum alloys comprising an alumina silicate rich core and a boron glass shell and a chemical composition comprising: 20-70 wt % Al2O3, 20-60 wt % SiO2, 0-10 wt % CaO, 0-10 wt %; MgO and 2-20 wt % B2O3.

Abstract: An apparatus and method for use in metal melting, refining and/or other processing, such as, for example, steel making in an electric arc furnace (EAF), and more particularly, to improved burner/injector panels and related methods for the introduction of various energy sources, such as, for example, chemical energy, oxygen and particulates into an EAF.

Abstract: A scrap submergence vessel for melting scrap metal is disclosed. The vessel comprises a front wall comprising an inlet, a back wall (opposite the front wall) comprising an outlet, and a flow direction member that causes molten metal flowing into the inlet to be directed at least partially upward against a portion of the back wall. The movement of molten metal through the vessel creates a downward pull that draws metal scrap placed above or within the vessel downward into the molten metal bath where it melts.

Abstract: A ladle that can melt and freeze castable metal in a specific manner so that high quality liquid metal and metal alloys may be produced with minimum oxide and hydrogen content. Upon introduction of a quantity of molten metal into the ladle, staged heating and cooling of the molten metal promotes the liberation of previously-dissolved gases from the castable metal, resulting in significant decreases in as-cast porosity.

Abstract: An installation for producing stainless steel for all stainless steel products both in the austenitic and the ferritic range, based on liquid pig-iron and FeCr solids, without using a supply of electrical energy. The liquid pig-iron, after being pre-treated in a blast furnace, is subjected to a DDD treatment (dephosphorization, desiliconization and desulphurization), is heated, finished or alloyed and deoxidated. The quantity of slag-free liquid pig-iron that has been pre-treated in the blast furnace and a DDD device is separated and introduced into two classic “twin” AOD-L converters, where the required chemical process steps (of the heating, decarburization and alloying stages) take place in parallel contrary processes using autogenous chemical energy. The heating stage is carried out first in the first twin AOD-L converter and the decarburization is carried out first in the second twin AOD-L converter.

Abstract: An exemplary embodiment of the invention provides a side well for a metal melting furnace. The side well comprises an insulated body having a front wall adapted to form part of an insulated side wall of a metal melting furnace and a top, a cavity within the body including a single upright well having a cylindrical wall adjacent to a closed bottom of the cavity, an entrance to the cavity at the top of the insulated body, a metal inlet channel leading directly into the cavity from an inlet aperture in the front wall, and a metal outlet channel leading directly from the cavity to a metal outlet aperture in the front wall. The side well includes a rotatable impeller having a vertical rotatable shaft and at least one vaned section positioned at a lower end of the rotatable shaft; wherein the impeller extends into the cavity with the vaned section positioned in the well adjacent to the cylindrical wall.

Abstract: An inoculant feeding method and apparatus in which a desired amount of inoculants can be fed into molten metal poured into a mold by an automatic molten metal pouring machine, and an automatic molten metal pouring machine using the apparatus. An inoculant feeding apparatus (1) feeds inoculants into molten metal poured into a mold (2) from an automatic molten metal pouring machine (20), at a predetermined proportion corresponding to the amount of the poured molten metal which gradually varies. The apparatus (1) is provided with a hopper (8) which is attached to a truck (6) and which stores the inoculants, a screw conveyor (9) attached to a lower end of the hopper, a drive mechanism (10) which is attached to a base end of the screw conveyor and which drives the screw driver, and a controller (30) which controls the drive mechanism.

Abstract: An apparatus for recovering platinum group elements comprises a furnace body having an interior space substantially shot off from external air, a material charging port and an exhaust port provided in an upper half of the furnace body, at least two fluid discharge ports provided in a lower half of the furnace body at different height levels. a material charging chute connected to the material charging port. an exhaust unit connected to the exhaust port; and electrodes for passing electric current through and heating material charged into the furnace. The material charging chute is equipped with a vertical two stage shutter so as to maintain airtightness when material is charged into the interior space of the furnace.

Abstract: Provided are a method and an apparatus for melting an aluminum powder, which are capable of melting the aluminum powder with a high yield and allow the melted aluminum to be reused for a variety of applications. The method for melting the aluminum powder includes the steps of: preparing a mixture (M) including an aluminum powder (A) and a fluoride-based flux (F) by previously mixing the aluminum powder (A) and the fluoride-based flux (F); and melting the mixture (M) in molten aluminum (L).

Abstract: The invention relates to a method and device for supersonically injecting oxygen into a furnace, in particular a cupola furnace, in which the total oxygen required for the furnace operation is injected with the aid of two distinct circuits, i.e., the first circuit comprising at least one supersonic oxygen injecting nozzle and a second circuit which comprises additionally oxygen injecting means and is connected to the first circuit by pressure-sensitive means, such as a discharging device (or upstream pressure adjuster), in such a way that a stable pressure is obtained in the first circuit upon the attainment of the maximum flowrate thereof, wherein the first circuit can consists of several supersonic nozzle groups.

Abstract: An operation method of a flash smelting furnace includes blowing a gas for dispersing raw material and contributing to a reaction, from a lance at an upper portion of a shaft so that the gas forms a spiral flow. A raw material supply apparatus includes a supply portion supplying raw material and a gas for dispersing the raw material and contributing to a reaction into a flash smelting furnace, wherein the supply portion has a lance provided at an upper portion of a shaft that blows the gas so that the gas forms a spiral flow.

Abstract: A method and apparatus for accessing a furnace melt are provided. Preferably, the method and apparatus provide for the safe and efficient access to the melt. According to one aspect of the invention used in a steel-making process in an electric arc furnace, a furnace aperture burner/lance provides a flame for heating the melt, a lance device for injecting oxygen into the furnace, or both. To access the melt, the furnace aperture burner/lance is disengaged, access is provided to the melt through the furnace aperture, and the furnace aperture burner/lance is reengaged when the access is concluded.

Abstract: Disclosed herein are a method and an apparatus for preparing a metal composite powder by using gas spraying. The method of preparing a metal composite powder by using gas spraying includes introducing a matrix phase in a chamber, including a reinforcing phase in the chamber, melting the introduced matrix phase to form a melt, adding the reinforcing phase in the melt, stirring the melt with the added reinforcing phase to form a melt mixture, atomizing the melt mixture together with a gas to form a metal composite powder containing the reinforcing phase, and collecting the metal composite powder formed.

Abstract: The invention relates to a melting or reduction furnace (2), in which the charge stock (9) is supplied using feed pipes (17). Each feed pipe (17) has a mouthpiece (18) that is not cooled and is configured from an uncooled wear-resistant inner guide pipe (19) and an uncooled concentric, heat-resistant outer protective pipe (20).

Abstract: An apparatus for injecting particulate and/or gaseous material into a metallurgical vessel for use in a metallurgical process includes a duct to inject the material. The duct includes a duct wall of concentric annular passages for inflow of cooling water from a rear end to a forward end of the duct along a first of the annular passages and for outflow of cooling water from the forward end to the rear end of the duct wall along a second of the annular passages. The concentric annular passages are provided by concentric sleeves that consist of an inner sleeve, an outer sleeve, and an intermediate sleeve. The apparatus also includes a duct tip at a forward end of the duct joining at least the inner and outer sleeves so as to provide a water flow connection between the first and second water flow passages.

Abstract: The present invention relates generally to a ladle metallurgy furnace having an improved roof structure. The improved roof may comprise an internal surface structure having a substantially smooth exterior surface, an external surface structure spaced apart from the internal surface structure, a plurality of channels that are defined intermediate the internal and external surface structures, a supply port in fluid communication with at least one channel through the second surface structure and in further fluid communication with a supply line, and a return port in fluid communication with at least one channel through the external surface structure and in further fluid communication with a return line.

Abstract: A lance nozzle insert for a refractory lance for feeding an additive wire into a quantity of molten metal below the surface of the molten metal surface is made of a material comprising stabilized zirconium oxide and graphite substantially increasing the corrosion resistance of the lance nozzle insert.

Abstract: The aim of the invention is to produce stainless steel for all stainless steel products both in the austenitic and the ferritic range, based on liquid pig-iron and FeCr solids, without using a supply of electrical energy. According to the invention, the liquid pig-iron, after being pre-treated in a blast furnace, is subjected to a DDD treatment (dephosphorisation, desiliconisation and desulphuration), is heated, finished or alloyed and deoxidated. The quantity of slag-free liquid pig-iron that has been pre-treated in the blast furnace is separated and introduced into two classic “twin” AOD-L converters, where the required chemical process steps (of the DDD treatment and of the heating, decarburization and alloying stages) take place in parallel contrary processes using autogenous chemical energy, the DDD treatment being carried out first in the first twin AOD-L converter and the decarburization being carried out first in the second twin AOD-L converter.

Abstract: A treatment ladle comprising a ladle shell containing a generally tubular refractory ladle liner, said ladle being pivotable between a horizontal position and a vertical position, said ladle liner having a first end and a second end with a continuous sidewall therebetween, an interior space being defined between said first and second ends and the continuous sidewall, said ladle liner additionally comprising a pocket for holding a treatment agent, said pocket being located adjacent the first end and in fluid communication with the interior space and located closer to the top than the bottom of the interior space when the ladle is in its horizontal position and closer to the bottom than the top of the interior space when the ladle is in its vertical position, and a spout for receiving and pouring molten metal located closer to the top than the bottom of the interior space when the ladle is in its horizontal and vertical positions, wherein in the horizontal position, a lower volume of the interior space defined

Abstract: Method and system for producing metallic nuggets includes providing reducible mixture (e.g., reducible micro-agglomerates; reducing material and reducible iron bearing material; reducible mixture including additives such as a fluxing agent; compacts, etc.) on at least a portion of a hearth material layer. In one embodiment, a plurality of channel openings extend at least partially through a layer of the reducible mixture to define a plurality of nugget forming reducible material regions. Such channel openings may be at least partially filled with nugget separation fill material (e.g., carbonaceous material). Thermally treating the layer of reducible mixture results in formation of one or more metallic iron nuggets. In other embodiments, various compositions of the reducible mixture and the formation of the reducible mixture provide one or more beneficial characteristics.