Filter module (1) of a filtering system for a tundish (10) comprises a filter unit (1f) provided with channels (1c) extending from a channel inlet to a channel outlet, and a wall module (2) comprising a wall defining an opening (2o) extending over an opening height (h2) from the floor (10f). A bypass passage (2b) is defined between the wall module (2) and the filter module (1) of largest width (t12) such that the metal melt can only flow from the inlet portion to the outlet portion by flowing either through the channels of the filter unit (1f) or through the bypass passage (2b). The wall module comprises a wall ledge (2L) having a width (t2L). The filter module (1) further comprises a filter ledge (1L) having a width (t1L) and being offset vertically relative to the wall ledge (2L) to form therewith a baffle.
B22D 41/08 - Récipients de maintien d'un bain de fusion, p. ex. poches, paniers de coulée, bassins de coulée ou systèmes analogues pour coulée par le fond
2.
METHOD AND APPARATUS FOR BATCH PRODUCTION OF, AND CONTINUOUS APPLICATION OF, A REFRACTORY COMPOSITION TO A SURFACE
A device and a process for the continuous application of a refractory slurry to a surface incorporate a batch reactor (10) for the controlled mixing of the slurry, a product vessel (60) in communication with the batch reactor (10) to contain the mixed slurry, and a variable-rate spraying applicator or nozzle in communication with the product vessel and with an air supply. A controller (100) controls input to, output from, and the operation of, the batch mixer (10), and monitors batch production. The controller (100) monitors the amount of slurry contained in the product vessel (60). If the level of slurry in the product hopper is such that the product hopper cannot accommodate an additional batch of slurry, the controller interrupts batch production and resumes production when the product hopper can accept the contents of the batch reactor (10).
B21B 41/02 - Retour des pièces travaillées pour répéter la ou les passes
B28C 5/02 - Appareillages ou procédés pour la production de mélanges de ciment avec d'autres substances, p. ex. coulis, mortiers, compositions poreuses ou fibreuses n'utilisant pas de moyens mécaniques d'entraînement pour effectuer le mélange
The present invention concerns a slab nozzle (1) for use in a continuous slab casting installation, characterized by a specific geometry of the outer wall of a downstream portion thereof which is inserted in a slab mould cavity. The specific geometry promotes a "round-about" effect whereby converging opposite streams of molten metal flowing towards two opposite flanks of the slab nozzle are each preferentially deviated towards one side of the slab nozzle where they can freely flow through the narrow channels formed between the slab nozzle and the slab mould cavity wall without impinging with one another. This prolongs the service life of the slab nozzle by substantially reducing the erosion rate of the outer wall thereof.
A refractory block configured to surround an outlet modifies, within a refractory vessel, the flow of molten metal passing through the outlet. The block takes the form of a base through which a main orifice passes, and a wall extending upwards around the periphery of the base. Structural features that may be included in the block include a circumferential lip around the exterior of the wall, an interior volume in which the radius decreases downwardly towards the main orifice in a plurality of steps, and flow openings in the wall that are configured to induce swirling in the flow pattern in the interior volume of the block.
B22D 41/08 - Récipients de maintien d'un bain de fusion, p. ex. poches, paniers de coulée, bassins de coulée ou systèmes analogues pour coulée par le fond
B22D 41/16 - Fermetures du type quenouilles de coulée, c.-à-d. la tige de fermeture étant mise en place vers le bas à travers le récipient et le métal qu'il contient, pour faire varier la section de passage du métal dans l'ouverture de coulée
B22D 11/10 - Alimentation en métal liquide ou traitement du métal liquide
5.
METALLURGICAL VESSEL LINING WITH CONFIGURED PERFORATION STRUCTURE
A lining for a metallurgical vessel is configured to have an engineered porosity. The lining contains a plurality of regions, each extending in a primary plane of the lining, each region having a differing value of total pore or perforation area as measured in a primary plane of the lining. The lining may be used to form part or all of the working surface of the floors or walls of the vessel. In casting use the lining produces an oxidation buffering layer at an interphase of metal melt extending from the interface between metal melt and the walls and floor of the metallurgical vessel, such that when in casting use, the metal flow rate in said oxidation buffering layer is substantially nil, and the concentration of endogenous inclusions, in particular oxides, in said oxidation buffering layer is substantially higher than in the bulk of the metal melt.
The thin slab nozzle has a central bore (50) comprising: an upstream bore portion (50a) comprising an inlet orifice (50u) and extending over a height Ha and, adjacent thereto, forming an upstream boundary (5a) with a converging bore portion (50e) of height He located in a connecting portion of the nozzle, and adjacent thereto, and a thin bore portion (500 of height Hf located in a diffusing portion of the nozzle and ending at the upstream end (10u) of a divider (10). In a section of the nozzle along a first symmetry plane 111 the wall of the central bore (50) has the following geometry: the radius of curvature at any point of the bore wall of the converging bore portion (50e) is finite, and the ratio of the height Hf to the height He is not more than 1.
A refractory formulation containing an anhydrous solvent, an oleophilic rheology modifier and a refractory aggregate exhibits non-thermoplastic behavior, and remains plastic and formable at temperatures in the range of 10 degrees Celsius to 180 degrees Celsius. The oleophilic rheology modifier may effectively bind with the solvent to create a gel-like structure with organic solvents with moderate to high polarity. A phyllosilicate clay that has been treated with a quaternary fatty acid amine may be used as the oleophilic rheology modifier.
C04B 35/00 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques
A formulation containing polymer, resin and cement combined with aggregate can be used as a gunnable mix that is applied to a surface by being conveyed pneumatically in dry form to a nozzle, where water is added. Polymer in the gunnable mix enables it to adhere and bond to a surface, such as carbon brick, of a lining of a vessel used for the containment of molten metals. The formulation may be used, for example, to repair and protect blast furnace hearth linings.
The present invention concerns a nozzle assembly (20, 30) for a metal casting apparatus selected from a sliding gate and a tube exchange device, said nozzle assembly comprising: a first refractory element (1 ) comprising a first coupling surface (1 a) which includes a first bore aperture, and a second refractory element (11 ) comprising a second coupling surface (1 1a), which includes a second bore aperture, the first and second elements being coupled to one another in a sliding translation relationship through their respective first and second coupling surfaces such that the first and second bore apertures can be brought into and out of registry to define, when in registry, a continuous bore (3, 13) for discharging molten metal from a molten metal inlet (13a) to a molten metal outlet (3b) of said nozzle assembly, a sealing member (2) provided between the first and second coupling surfaces of the first and second elements, characterized in that, the sealing member (2) comprises a thermally intumescent material.
B22D 41/08 - Récipients de maintien d'un bain de fusion, p. ex. poches, paniers de coulée, bassins de coulée ou systèmes analogues pour coulée par le fond
B22D 41/22 - Fermetures du type à tiroir, c.-à-d. comportant une plaque fixe et une plaque mobile en contact mutuel et dont le glissement permet de faire varier la section de passage
B22D 41/32 - Leur fabrication ou leur remise en état caractérisées par le matériau utilisé
B22D 41/36 - Traitement des plaques, p. ex. lubrification, chauffage
A metallurgical ladle, and more particularly the bottom of the ladle or a ladle block in the bottom of the ladle, have an outlet through which the molten metal can drain. The ladle bottom contains an open-end channel bounded by at least one wall with a major dimension perpendicular to a line joining the center of the outlet entrance to the center of the wall. In selected configurations, opposing faces of the walls bounding the open-end channel are convex in the horizontal plane and concave in the horizontal plane, respectively.
B22D 41/08 - Récipients de maintien d'un bain de fusion, p. ex. poches, paniers de coulée, bassins de coulée ou systèmes analogues pour coulée par le fond
A tundish impact pad formed from refractory material comprises a base having an impact surface which, in use, faces upwardly against a stream of molten metal entering a tundish, and a wall extending upwardly from the base around at least a part of the periphery of the impact surface. The wall has at least one latitudinal portion. An inwardly-extending feature protrudes from the latitudinal wall. The inwardly-extending feature inhibits flow exiting the impact pad from passing over the center of the latitudinal portion of the wall.
A low-water-content castable composition produces cast products with an increased modulus of rupture, an increased cold crushing strength, and decreased porosity. The composition employs closed fractions of constituent particles with specified populations and specified gaps in the particle size distribution to produce these properties. The composition is suitable for refractory applications.
A low-water-content castable composition produces cast products with an increased modulus of rupture, an increased cold crushing strength, and decreased porosity. The composition employs closed fractions of constituent particles with specified populations and specified gaps in the particle size distribution to produce these properties. The composition is suitable for refractory applications.
C04B 35/101 - Réfractaires obtenus à partir de mélanges à granulométrie contrôlée
B28B 1/14 - Fabrication d'objets façonnés à partir du matériau par simple coulée, le matériau n'étant ni alimenté sous pression, ni réellement compacté
The present invention relates to conveyor rolls used in high temperature applications, and more particularly concerns an improved end cap assembly for such rolls. According to the invention, the conveyor roll (1) comprises a) a ceramic spool (2), b) at each end (21 ,22) of the ceramic spool (2), an end cap (4) comprising a metal ferrule (41) and having a certain internal circumference adapted to fit over an end (21) of the ceramic spool; and c) interposed between each end (21 ,22) of the ceramic spool (2) and the end cap (4) a tolerance ring (3) of resilient metal having a plurality of circumferentially arranged corrugations. This conveyor roll can resist temporary overheat or blockage without damages.
B65G 39/02 - Adaptation des rouleaux individuels ou supports à cet effet
F16D 1/08 - Accouplements pour établir une liaison rigide entre deux arbres coaxiaux ou d'autres éléments mobiles d'une machine pour montage d'un organe sur un arbre ou à l'extrémité d'un arbre avec moyeu de serrageAccouplements pour établir une liaison rigide entre deux arbres coaxiaux ou d'autres éléments mobiles d'une machine pour montage d'un organe sur un arbre ou à l'extrémité d'un arbre avec moyeu et clavette longitudinale
The present invention concerns stopper rod system for use in a metallurgical vessel, comprising a stopper rod and a nozzle. At least one of the stopper rod nose (42,56) and the internal surface of the nozzle bore comprise (43,62) a plurality of ripples that are arranged such that the size of a flow channel between the stopper rod nose and the internal stopper rod when the stopper rod system is in an open position discontinuously increases in size as a function of the distance downstream from the point of contact between the stopper rod and the nozzle.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
(1) Chemical products for industrial application, namely, foundry materials as casting powder, casting flux and masking compound; and metallurgical agents for the metal industry, namely, casting powder.
(2) Metallurgical supplies for the metal-making industry, namely, casting powder.
Common metals and their alloys, especially for metallurgical
use; non-electric wires of common metals, that is massive
wires as well as hollow wires filled with at least one
material which is influencing the metallurgical properties
of a metal when added to said metal.
05 - Produits pharmaceutiques, vétérinaires et hygièniques
06 - Métaux communs et minerais; objets en métal
Produits et services
(1) Base metals and their alloys, namely for metallurgical uses; wires made of metal (not for electrical use), that is both solid wires and hollow wires provided with metallurgically effective fillings, namely for metallurgical uses.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
Produits et services
(1) Lightweight zircon-based insulating coating designed for working lining protection.
(2) Lightweight sprayable refractory material applied to refractory brick and refractory monolithics as a component of a refractory lining in high temperature furnaces.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Produits chimiques à usage industriel, à savoir poudres à
mouler et masses de recouvrement comme agents auxiliaires à
mouler pour la fabrication de l'acier.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
(1) Metallurgical materials for the metal producing industry, namely casting powders,
(2) Metallurgical materials for the metal producing industry, especially casting powders.
(1) Equipment used in handling molten metal namely, crucibles, ladle stopper heads, stopper rod sleeves, nozzles, refractory tubes, saggers immersion bells and plungers.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
Produits et services
Produits chimiques employés dans l'industrie métallurgique. Produits chimiques employés dans l'industrie métallurgique,
en particulier matière de revêtement résistant à la chaleur
pour la protection des surfaces destinées à être mises en
contact avec des métaux fondus.
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
19 - Matériaux de construction non métalliques
Produits et services
(1) Cast and castable refractories; bonding and patching mortars, both air setting and heat setting refractory cement and furnace cement; mineral wool insulations - namely, mineral wool base, insulating cements, insulating blankets, insulating blocks, mineral wool insulations - granulated and loose, plastic insulating materials applied over insulations to protect them from the weather and general use as an insulating material; moldable sealing and insulating compounds for refractory structures; plastic fire brick and cast construction blocks.
(1) Fire brick and other refractory materials for construction and maintenance of boilers and industrial furnaces in steel mills, foundries and oil refineries.
(1) Fire brick and other refractory materials for construction and maintenance of boilers and industrial furnaces in steel mills, foundries and oil refineries.
