Abrégé

A self-baking electrode includes a cylindrical shroud having a longitudinal central axis A. The shroud is made of an electrically-conductive material and disposed vertically on top of a vat of the furnace over one length of the self-baking electrode. The electrode includes a central column disposed within the shroud, substantially aligned on the longitudinal axis A. The central column is suspended from a device independent of the shroud such that the central column is adapted to slip in vertical translation within the shroud and a crude carbonaceous paste disposed around the central column in a top portion of the shroud. The paste is softened and baked under an effect of heat into a stiff carbonaceous paste sticking to the central column in a bottom portion of the shroud. The central column includes a series of electrically-conductive carbonaceous elongate elements. The carbonaceous elongate elements are flexible.

Classes IPC  ?

• H05B 7/09 - Électrodes à auto-cuisson
• H05B 7/10 - Fixations, supports, bornes ou dispositions pour l'avancement ou le guidage des électrodes
• H05B 7/107 - Fixations, supports, bornes ou dispositions pour l'avancement ou le guidage des électrodes spécialement adaptés pour les électrodes à auto-cuisson
• F27B 3/08 - Fours à sole, p. ex. fours à réverbérationFours à arc électrique à chauffage électrique, p. ex. fours à arc électrique, avec ou sans une autre source de chaleur

Abrégé

The present invention relates to a self-baking electrode (1) for an electric arc furnace (9) comprising a shell (2) and a central column (3) comprising a series of elongate flexible carbonaceous elements (4). The invention also relates to a device (100) for suspending the central column (3) of the above electrode (1). The invention relates lastly to a method for joining an elongate carbonaceous element (4) to the upper end (3a) of a central column (3) of an electrode (1) as above.

Classes IPC  ?

• H05B 7/09 - Électrodes à auto-cuisson
• H05B 7/107 - Fixations, supports, bornes ou dispositions pour l'avancement ou le guidage des électrodes spécialement adaptés pour les électrodes à auto-cuisson

Abrégé

The present invention relates to a self-baking electrode (1) for an electric arc furnace (9) comprising a shell (2) and a central column (3) comprising a series of elongate flexible carbonaceous elements (4). The invention also relates to a device (100) for suspending the central column (3) of the above electrode (1). The invention relates lastly to a method for joining an elongate carbonaceous element (4) to the upper end (3a) of a central column (3) of an electrode (1) as above.

Classes IPC  ?

• H05B 7/107 - Fixations, supports, bornes ou dispositions pour l'avancement ou le guidage des électrodes spécialement adaptés pour les électrodes à auto-cuisson
• H05B 7/09 - Électrodes à auto-cuisson

Produits et services

[ Treatment of materials of metal, in particular molten baths thereof; treatment of liquid metals by inoculation; treatment of metal, namely, metallurgical processing of hot metal, metallurgical smelting, metal melting, metal tempering, treatment and transformation of bauxite, alumina, aluminium and silicon oxide, abrading and polishing of bauxite, alumina, aluminium and silicon oxide, for the packaging, automobile, aeronautical, marine, building, mechanical, boilermaking, electronics, domestic equipment, decorating, sports and leisure, cooking equipment, electrometallurgy, steelmaking and casting industries ] [ Chemicals used in industry; tempering preparations; ] inoculants and inoculants based on ferrosilicon, namely, chemicals used in industry added to ensure a certain cast iron solidification structure [ ; silicon; barium; alumina ] [ Raw and semi-processed common metals and their alloys; ] ferroalloys for inoculation and/or nodulisation, deoxidation, desulphurisation and denitratation of cast iron; inoculants, namely, substances consisting of a mixture of different alloys based on iron silicide, for the treatment of lamellar and ductile cast iron in the nature of alloyed iron, Compacted Graphite Iron, Ductile Iron, Lamellar Iron; [ silicon iron; steel; goods of aluminum, namely, rods, ingots, wire, foil, sheets, laminates, profile sections, slabs, boxes, discs, tubes of aluminium and derivatives of aluminium for the packaging, automobile, aeronautical, marine, building, mechanical, boilermaking, electronics, domestic equipment, decorating, sports and leisure, cooking equipment industries; foundry chill-moulds, of metal; manganese ]

Abrégé

The present invention relates to a particulate inoculant for treating liquid cast-iron, comprising, on the one hand, support particles made of a fusible material in the liquid cast-iron, and on the other hand, surface particles made of a material that promotes the germination and the growth of graphite, disposed and distributed in a discontinuous manner at the surface of the support particles, the surface particles presenting a grain size distribution such that their diameter d50 is smaller than or equal to one-tenth of the diameter d50 of the support particles.

Classes IPC  ?

• B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
• C21C 1/10 - Fabrication des fontes à graphite sphéroïdal
• C21D 5/02 - Traitement thermique de la fonte pour améliorer la malléabilité de la fonte grise
• C22C 33/08 - Fabrication de fontes alliées
• C22C 37/00 - Fontes alliées
• C21C 7/00 - Traitement à l'état liquide des alliages ferreux, p. ex. des aciers, non couverts par les groupes
• C22C 37/04 - Fontes alliées contenant du graphite sphéroïdal
• C22C 37/08 - Fontes alliées contenant du chrome et du nickel

Abrégé

The invention relates to a particulate inoculant for treating a melt in a liquid phase, comprising support particles in a meltable material in the liquid melt, and surface particles in a material that stimulates the nucleation and growth of graphite, that are arranged and distributed discontinuously on the surface of the support particles, the surface particles having a particle size distribution such that the d50 thereof is lower than, or equal to, a tenth of the d50 of the support particles.

Classes IPC  ?

• B22D 1/00 - Traitement des métaux en fusion dans la poche ou dans les chenaux de coulée avant le moulage
• C21C 1/10 - Fabrication des fontes à graphite sphéroïdal

Abrégé

The invention relates to a particulate inoculant for treating a melt in a liquid phase, comprising support particles in a meltable material in the liquid melt, and surface particles in a material that stimulates the nucleation and growth of graphite, that are arranged and distributed discontinuously on the surface of the support particles, the surface particles having a particle size distribution such that the d50 thereof is lower than, or equal to, a tenth of the d50 of the support particles.

Classes IPC  ?

• B22D 1/00 - Traitement des métaux en fusion dans la poche ou dans les chenaux de coulée avant le moulage
• C21C 1/10 - Fabrication des fontes à graphite sphéroïdal

Abrégé

The invention relates to an inoculant alloy for the treatment of thick cast-iron parts, based on ferrosilicon and containing between 0.005 and 3 wt. % of rare earths, and characterised in that it also contains between 0.2 and 2 wt. % of antimony.

Classes IPC  ?

• B22D 27/00 - Traitement du métal dans le moule pendant qu'il est liquide ou plastique
• B22D 27/20 - Mesures non prévues ci-dessus, mais influençant la structure du grain ou la textureEmploi de compositions spécifiées à cet effet
• C21C 1/10 - Fabrication des fontes à graphite sphéroïdal
• C22C 29/18 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p. ex. cermets, ou d'autres composés métalliques, p. ex. oxynitrures, sulfures à base de siliciures
• C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
• C22C 35/00 - Alliages-mère pour le fer ou l'acier

Abrégé

The invention relates to an inoculant alloy for the treatment of thick cast-iron parts, based on ferrosilicon and containing between 0.005 and 3 wt. % of rare earths, and characterised in that it also contains between 0.2 and 2 wt. % of antimony.

Classes IPC  ?

• C22C 29/18 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p. ex. cermets, ou d'autres composés métalliques, p. ex. oxynitrures, sulfures à base de siliciures
• C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
• C21C 1/10 - Fabrication des fontes à graphite sphéroïdal
• C22C 35/00 - Alliages-mère pour le fer ou l'acier
• B22D 27/00 - Traitement du métal dans le moule pendant qu'il est liquide ou plastique
• B22D 27/20 - Mesures non prévues ci-dessus, mais influençant la structure du grain ou la textureEmploi de compositions spécifiées à cet effet

Abrégé

The invention relates to an apparatus (10) for purifying a semiconductor material (44), which includes at least a chamber containing an atmosphere of at least one inert gas. The apparatus comprises: in the chamber, a crucible (30) intended to contain the semiconductor material in the molten state; a plasma torch (40) intended to remove impurities from the molten semiconductor material in the crucible; and a confinement system (50) intended to define a confinement volume (69) between the crucible and the plasma torch, the confinement system comprising a device (54) for evacuating gaseous compounds and/or particles resulting from the purification of the molten silicon. The evacuation device comprises at least one suction aperture (70) having a cylindrical portion (72) extended by a flared portion (76) opening into the confinement volume.

Classes IPC  ?

• C01B 33/037 - Purification
• C01B 33/02 - Silicium
• C30B 29/06 - Silicium
• C30B 11/00 - Croissance des monocristaux par simple solidification ou dans un gradient de température, p. ex. méthode de Bridgman-Stockbarger

Produits et services

Common metals and their alloys; unwrought and semi-wrought common metals and their alloys, in particular ferro-alloys for inoculation and/or nodulisation, deoxidation, desulphurization, denitration of cast iron; inoculants, namely, substances consisting of a mixture of different alloys based on iron silicide, for the treatment of lamellar and ductile cast iron; [ ferro-silicium ingots, ferro-silicium alloys ingots, ] ferro-silicium and its alloys for the packaging, automobile, aeronautical, marine, building, mechanical, boilermaking, electronics, domestic equipment, decorating, sports and leisure, cooking equipment industries [ ; foundry moulds, of metal ]

Produits et services

Chemicals for use in industry and science; tempering chemicals for use in metalworking or soldering; silicon; strontium; fused silica; concrete additives, namely, chemicals for aerating and preserving concrete Common metals and their alloys, namely, unwrought and semi-wrought common metals and their alloys, namely, ferro-alloys for inoculation and/or nodulisation, deoxidation, desulphyrisation, denitration of cast iron; inoculants, namely, metal substances consisting of a mixture of different alloys based on iron silicide, for the treatment of lamellar and ductile cast iron; aluminum alloy; aluminum oxides; ferrosilicium, namely, ferrosilicon; steel; rods, ingots, wire, foil, sheets, laminates, profile sections, slabs, boxes, discs, tubes of aluminum and derivatives of aluminum for the packaging, automobile, aeronautical, marine, building, mechanical, boilermaking, electronics, domestic equipment, decorating, sports and leisure, cooking equipment industries; foundry chill molds [ Casting machines ] Silica stone; Portland cement; concrete; building elements of concrete, cement or products based on silica, namely, block, lintels, beams, bricks, posts, slabs, panels Fused silica as a semi-finished product, namely, ingots, tubes, rods, discs, plates and rings all for general industrial and further manufacturing use [ Metal treatment, namely, metal tempering, metallurgical processing of hot metal; material processing and metal treatment of bauxite, alumina, aluminum, silicon oxide and grinding and polishing the aforesaid materials, for the packaging, automobile, aeronautical, marine, building, mechanical, boilermaking, electronics, domestic equipment, decorating, sports and leisure, cooking equipment industries; forging of metal goods to the order and specification of others]

Produits et services

Chemicals for use in industry and science; tempering chemicals for use in metalworking or soldering; silicon; strontium; fused silica; concrete additives, namely, chemicals for aerating and preserving concrete Common metals and their alloys, namely, unwrought and semi-wrought common metals and their alloys, namely, ferro-alloys for inoculation and/or nodulisation, deoxidation, desulphyrisation, denitration of cast iron; inoculants, namely, metal substances consisting of a mixture of different alloys based on iron silicide, for the treatment of lamellar and ductile cast iron; aluminum alloy; aluminum oxides; ferrosilicium, namely, ferrosilicon; steel; rods, ingots, wire, foil, sheets, laminates, profile sections, slabs, boxes, discs, tubes of aluminium and derivatives of aluminium for the packaging, automobile, aeronautical, marine, building, mechanical, boilermaking, electronics, domestic equipment, decorating, sports and leisure, cooking equipment industries; foundry chill molds [ Casting machines ] Silica stone; Portland cement; concrete; building elements of concrete, cement or products based on silica, namely, block, lintels, beams, bricks, posts, slabs, panels Metal treatment, namely, metal tempering, metallurgical processing of hot metal; material processing and metal treatment of bauxite, alumina, aluminum, silicon oxide and grinding and polishing the aforesaid materials, for the packaging, automobile, aeronautical, marine, building, mechanical, boilermaking, electronics, domestic equipment, decorating, sports and leisure, cooking equipment industries; forging of metal goods to the order and specification of others [ Fused silica as a semi-finished product, namely, ingots, tubes, rods, discs, plates and rings all for general industrial and further manufacturing use ]

Abrégé

The invention relates to an inoculant mixture for the treatment of molten cast iron, comprising 5 to 75 % by weight of a ferro-silicon alloy of type A where Si/Fe > 2, containing 0.005 to 3 % by weight of rare earths, 0.005 to 3 % bismuth, lead and/or antimony and less than 3 % calcium, with a ratio (Bi+Pb+Sb)/TR of between 0.9 and 2.2 and 25 to 95 % of at least one alloy of type B, based on silicon or ferro-silicon such that Si/Fe > 2, containing calcium to a level such that the total amount of calcium in the mixture is from 0.3 to 3 %. The above mixtures have a good granulometric stability over time and provide an efficient inoculation of cast pieces, in particular of thin pieces.

Classes IPC  ?

• B22D 27/20 - Mesures non prévues ci-dessus, mais influençant la structure du grain ou la textureEmploi de compositions spécifiées à cet effet
• C21C 1/10 - Fabrication des fontes à graphite sphéroïdal
• C22C 33/08 - Fabrication de fontes alliées

Produits et services

COMMON METALS AND THEIR ALLOYS AND FERRO-ALLOYS FOR THE MANUFACTURE OF CAST IRON PIPES

Produits et services

CHEMICALS USED IN METALLURGY, IN TEMPERING AND SOLDERING PREPARATIONS, IN TREATMENT OF METALS, IN TREATMENT OF CAST IRON WITH SPHEROIDAL OR LAMELLAR GRAPHITE, IN PURIFICATION AND REFINING OF METALS METALLIC MATERIALS, NAMELY FERRO ALLOYS USED IN FOUNDRY PROCESSES; COMMON METALS, NAMELY ALUMINUM AND ALUMINUM ALLOYS