Abstract

The present disclosure relates to a mixer device having a housing including at least first and second adjacent mixing cells (2, 3), each cell (2, 3) including a fluid inlet opening (21, 31) and a fluid outlet opening (22, 32), the inlet opening being offset from the outlet opening so that the axis of the inlet opening is parallel to the axis of the outlet opening, the outlet opening of the first cell being connected to the inlet opening of the second cell via a connecting channel.

IPC Classes  ?

• B01F 25/422 - Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path between stacked plates, e.g. grooved or perforated plates
• B01F 25/421 - Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
• B01F 25/431 - Straight mixing tubes with baffles or obstructions that do not cause substantial pressure dropBaffles therefor
• B01F 25/432 - Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flowsCross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
• B01F 25/452 - Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
• B01F 35/00 - Accessories for mixersAuxiliary operations or auxiliary devicesParts or details of general application

Abstract

The invention relates to a flux-cored wire (1) intended to be introduced into a bath of molten metal to perform a metallurgical treatment, the flux-cored wire including a core (2) extending locally along a longitudinal axis (L), and an outer casing (4) extending longitudinally around the core, the core including: - an extruded bar (8) predominantly comprising calcium, - an intermediate layer (10) extending longitudinally between the extruded bar and the outer casing, the intermediate layer including a powder comprising one or more of: a metal, a mixture of metals, a metal oxide, a mixture of metal oxides. The powder contains at least 10% by weight of lime aluminate, the lime aluminate containing at least the dodecacalcium hepta-aluminate phase.

IPC Classes  ?

• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
• C21C 7/06 - Deoxidising, e.g. killing

Goods & Services

Mineral-based chemical products; ferro-alloy-based chemical products; metal-based chemical products; all the aforesaid goods being for the treatment of liquid metals.

Goods & Services

Mineral-based chemical products; ferro-alloy-based chemical products; metal-based chemical products; all the aforesaid goods being for the treatment of liquid metals

Abstract

The present invention relates to a mixer device comprising a recess including at least first and second adjacent mixing cells (2, 3), each cell (2, 3) including a fluid inlet opening (21, 31) and a fluid outlet opening (22, 32), the inlet opening being offset from the outlet opening such that the axis of the inlet opening is parallel to the axis of the outlet opening, the outlet opening of the first cell being connected to the inlet opening of the second cell by means of a connecting channel.

IPC Classes  ?

• B01F 25/422 - Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path between stacked plates, e.g. grooved or perforated plates
• B01F 25/421 - Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
• B01F 25/432 - Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flowsCross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
• B01F 25/452 - Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
• B01F 35/00 - Accessories for mixersAuxiliary operations or auxiliary devicesParts or details of general application

Abstract

Cored wire (1; 100) intended to be introduced into a bath of molten metal to carry out a metallurgical treatment, the cored wire comprising: a filling (2) extending locally along a longitudinal axis (L), the filling containing at least one active substance for treating the molten metal; and an external wrapper (4) longitudinally around the filling; characterized in that the filling comprises: an extruded rod (8) extending longitudinally and containing the active substance; and an intermediate layer (10) extending longitudinally between the extruded rod and the outer wrapper and containing a powder containing one or more of the following: a metal, a mixture of metals, a metal oxide, a mixture of metal oxides. Corresponding method.

IPC Classes  ?

• C21C 1/10 - Making spheroidal graphite cast-iron
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

A cored wire for introducing additive into a bath of liquid steel, of the type comprising a metal sheath surrounding said additive, characterized in that said additive predominantly comprises calcium silicate. A process for manufacturing a resulfurized steel, characterized in that it comprises a step of introducing, into the bath of liquid steel, such a cored wire.

IPC Classes  ?

• C21B 3/02 - General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
• C21C 7/04 - Removing impurities by adding a treating agent
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
• C21B 5/02 - Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
• C21B 7/06 - Linings for furnaces

Abstract

Powder which is for a flux-cored wire intended to become alloyed with a molten metal bath and which is formed by particles composed with at least 95% of sulphur, characterised in that its granulometric population is defined by: −1 μm≦d10≦340 μm; −200 μm d50≦2000 μm; −500 μm d90≦2900 μm. Sulphur-based flux-cored wire, characterised in that it contains the preceding powder, and in that the compaction rate of the powder within the wire is greater than or equal to 85%. Method for producing a sulphur-based flux-cored wire for alloying with molten metal baths.

IPC Classes  ?

• B23K 35/22 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
• B22F 3/02 - Compacting only

Abstract

The invention relates to a powder for a cored wire for alloying a liquid metal bath, made of particles consisting of at least 95% of sulfur, characterized in that the granulometric population is defined by: 1 µm = d10 = 340 µm; 200 µm = d50 = 2000 µm; and 500 µm = d90 = 2900 µm. The invention also relates to a cored wire, characterized in that it contains the above-mentioned powder and in that the compaction rate of said powder inside the wire is greater than or equal to 85%. The invention further relates to a method for manufacturing a wire cored with sulfur for alloying liquid metal baths.

IPC Classes  ?

• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

The invention relates to a powder for a cored wire for alloying a liquid metal bath, made of particles consisting of at least 95% of sulfur, characterized in that the granulometric population is defined by: 1 μm ≤ d10 ≤ 340 μm; 200 μm ≤ d50 ≤ 2000 μm; and 500 μm ≤ d90 ≤ 2900 μm. The invention also relates to a cored wire, characterized in that it contains the above-mentioned powder and in that the compaction rate of said powder inside the wire is greater than or equal to 85%. The invention further relates to a method for manufacturing a wire cored with sulfur for alloying liquid metal baths.

IPC Classes  ?

• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Goods & Services

Machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); machines and equipment for machines for wire injection. Maintenance, servicing and repair of machine tools, motors and engines (except for land vehicles), machine coupling and transmission components (except for land vehicles); maintenance, servicing and repair of machines and equipment for machines for wire injection.

Goods & Services

Machine tools for the steelmaking industry; machine tools for metallurgical processes; motors and engines except for land vehicles; machine coupling and transmission components except for land vehicles; machines and equipment for machines for wire injection; machine tools for molten metal treatment, machine tools for addition of chemical elements into molten metal Maintenance, servicing and repair of machine tools for steelmaking and for metallurgical processes; maintenance, servicing and repair of motors and engines except those for land vehicles; maintenance and repair of machine coupling and transmission components, except for land vehicles; maintenance, servicing and repair of machines and equipment for machines for wire injection

Goods & Services

Chemicals used in industry; tempering and soldering preparations; chemical compositions for the treatment of metallic baths; finishing preparations for use in the manufacture of steel; chemical preparations for facilitating the alloying of metals; galvanizing baths; alkaline-earth metals; antimony; nitrogen; bismuth; calcium carbide; calcium salts; carbon; lanthanum; metalloids; salts from rare earth metals; metal earths; selenium; silicon; sulphur; tellurium; yttrium; boron; brazing preparations; brazing fluxes; fluxes for use in a foundry; galvanizing preparations. Common metals, unwrought or semi-wrought, and their alloys; cables, tubes non-electric metal cables and wires; cables, wires and metal pipes and tubes with a filling; metal tubes and pipes; ores; rolled and cast construction materials; metal building materials; steel; aluminum; iron, unwrought or semi-wrought; lead, unwrought or semi-wrought; chromium; manganese; niobium; molybdenum; titanium; wolfram; vanadium.

Abstract

Supporting framework for holding a coil (1) of solid or filled wire (3, 4) for adding substances to a bath of liquid metal, comprising uprights (7) hugging said coil (1) and the internal faces (9) of which come into contact with the outermost layer (10) of turns of the wire of which said coil (1) is formed. Said internal faces (9) of said uprights (7) have, at least over a portion of their length, means that tend to intensify the contact between these uprights (7) and the wire by increasing the adhesion between all or some of the turns (3, 4) of the last layer of turns (10) of said wire and the uprights (7) and/or holding all or some of the turns (3, 4) of the last layer of turns (10) of said wire in housings formed on said uprights (7).

IPC Classes  ?

• B65H 49/08 - Package-supporting devices for a single operative package enclosing the package
• B65D 85/04 - Containers, packaging elements or packages, specially adapted for particular articles or materials for annular articles for coils of wire, rope or hose
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

Supporting framework for holding a coil (1) of solid or filled wire (3, 4) for adding substances to a bath of liquid metal, comprising uprights (7) hugging said coil (1) and the internal faces (9) of which come into contact with the outermost layer (10) of turns of the wire of which said coil (1) is formed. Said internal faces (9) of said uprights (7) have, at least over a portion of their length, means that tend to intensify the contact between these uprights (7) and the wire by increasing the adhesion between all or some of the turns (3, 4) of the last layer of turns (10) of said wire and the uprights (7) and/or holding all or some of the turns (3, 4) of the last layer of turns (10) of said wire in housings formed on said uprights (7).

IPC Classes  ?

• B65H 49/08 - Package-supporting devices for a single operative package enclosing the package
• B65D 85/04 - Containers, packaging elements or packages, specially adapted for particular articles or materials for annular articles for coils of wire, rope or hose
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Goods & Services

[Chemicals used in industry; tempering and soldering preparations, namely, chemicals for tempering and soldering; chemical compositions for the treatment of metallic baths; finishing preparations in the nature of tempering chemicals for use in the manufacture of steel; chemical preparations for facilitating the alloying of metals; galvanizing baths; alkaline-earth metals; antimony; nitrogen; bismuth; calcium carbide; calcium salts; carbon and graphite powder for industrial purposes; lanthanum; metalloids, namely, silicon, boron, tellurium; salts from rare earth metals; metal earths; selenium; silicon; sulphur; tellurium; yttrium; boron; brazing chemicals; brazing fluxes; fluxes for use in a foundry; chemical galvanizing preparations] Common metals, unwrought or semi-wrought, and their alloys; Non-electric cables of metal; metal tubes; non-electric metal cables and wires; non-electric metal cables, wires, pipes, and tubes with a filling; metal tubes and pipes; iron ores; rolled and cast construction materials, namely, iron and steel pipes and bars; metal building materials, namely, steel pipes and bars; steel; aluminum; iron, unwrought or semi-wrought; lead, unwrought or semi-wrought; chromium; manganese metal and ferro-manganese; ferro-niobium; molybdenum; titanium; wolfram, namely, tungsten metal and ferro-tungsten; ferro-vanadium

Goods & Services

Chemical products for use in industry; tempering and soldering preparations; chemical compositions for the treatment of metal baths; finishing preparations for use in the manufacture of steel; chemical preparations for facilitating the alloying of metals; galvanizing baths; alkaline-earth metals; antimony; nitrogen; bismuth; calcium carbide; calcium salts; carbon; lanthanum; metalloids; salts from rare earth metals; metal earths; selenium; silicon; sulphur; tellurium; yttrium; boron; brazing preparations; Brazing fluxes; melt for foundries; galvanizing preparations. Raw and semi-processed common metals and their alloys; non-electric cables, pipes and wires of metal; lined cables, wires and pipes of metal; Pipes and tubes of metal; ores; rolled and cast metallic building materials; metal building materials; steel; aluminium; iron, unwrought or semi-wrought; lead, unwrought or semi-wrought; chromium; manganese; niobium; molybdenum; titanium; tungsten; vanadium.

Goods & Services

Machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); machines and machine equipment for wire injection. Maintenance and repair of machine tools, of motors and engines (except for land vehicles), of machine coupling and transmission components (except for land vehicles); maintenance and repair of machines and machine equipment for wire injection.

Abstract

A method for introducing a cored wire into a bath of molten metal includes extracting the cored wire from a reel, and making it run into the molten metal bath, one part of the path traveled by the cored wire being formed in a guide tube with a distal end at a defined height above the metal bath's surface. The cored wire is driven and straightened under conditions practically not altering its substantially circular cross section and allowing it to be vertically introduced and penetrate into the depth of the bath. Elements for driving the cored wire from a reel, a guide tube for guiding the cored wire, and elements for straightening the cored wire are placed in front of its entry into the guide tube, the straightening elements giving the cored wire a straight direction without altering its circular cross section.

IPC Classes  ?

• C22B 9/10 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals with refining or fluxing agentsUse of materials therefor

Abstract

The invention relates to a flux-cored wire for charging a metallic bath into a state of fusion, comprising a metal sheath and powder filling and characterized in that the filling is a mixture of powders of molybdenum trioxide and moreover at least one reducing component, the molybdenum trioxide being predominant, and in that the proportions and grades of the powder mixture are predetermined so as to obtain complete reduction of the molybdenum trioxide in the metal sheath when the temperature increases due to insertion of the flux-cored wire into the bath. The invention also relates to a method for producing molybdenum-rich steel by means of said flux-cored wire.

IPC Classes  ?

• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
• B23K 35/368 - Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials

Abstract

The invention relates to a cored filler wire that includes an additive containing calcium silicate CaO.SiO2, adapted for treating so-called resulphurized special steel. The invention also relates to a method for making resulphurized steel using the above cored filler wire. The method of the invention is particularly adapted for treating solid inclusions present in aluminium-containing steel baths. The method of the invention can be used for preventing desulphurisation before the treating of the solid inclusions.

IPC Classes  ?

• C21C 7/04 - Removing impurities by adding a treating agent
• C21C 7/06 - Deoxidising, e.g. killing
• C21C 7/064 - DephosphorisingDesulfurising

Abstract

The present invention relates to an additive in the form of flux-cored wire for treating baths of liquid steel with a view to obtaining steels having a high lead content. The additive comprising metallic lead and/or one or more lead alloys according to the invention for treating baths of liquid steel, and is in the form of flex-cored wire composed of a metal sheath and a finely divided filling material, the latter being composed of a powder of metallic lead and/or of lead alloy and of a powder containing a material capable of releasing a gas, which is inert with respect to the liquid steel, at the temperature of the liquid steel bath. Characteristically, said powder of metallic lead and/or of lead alloy comprises a particle size fraction GR between 200 &mgr;m and 500 &mgr;m and said particle size fraction GR has the following characteristics: - through a 200 &mgr;m sieve: GR < 5%; - through a 300 &mgr;m sieve: 90% ³ GR ³ 10%; - through a 400 &mgr;m sieve: 40% 絛 GR < 100%; - through a 500 &mgr;m sieve: 100% ³ GR ³ 90%.

IPC Classes  ?

• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

The method for introducing a cored wire (2) into a bath (3) of molten metal consists in extracting the cored wire from a reel (9), especially from the core of the reel and in making it run into the molten metal bath (3), one part of the path travelled by the cored wire being formed in a guide tube (13), the distal end (32) of which is at a defined height (H) above the surface (PP') of the metal bath (3). The cored wire (2) is driven and subjected to a straightening operation under conditions practically not altering its substantially circular cross section and allowing it to be introduced and penetrate into the depth of the bath in a vertical direction. The installation (1) includes means (12) for driving said cored wire from a reel (9), in which the wire is extracted from the core of the reel, a guide tube (13) for guiding the cored wire (2), the distal end (32) of the tube being at a defined height (H) above the surface of the bath (3) and having a vertical direction, and means (12) for straightening the cored wire (2) that are placed in front of its entry into the guide tube (13), said straightening means being capable of giving the cored wire (2) a straight direction without altering its circular cross section. Preferably, the straightening means consist of a plurality of sets of two press rolls, the contact between the cored wire and each press roll being along a contact surface or along at least two lines of contact.

IPC Classes  ?

• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
• B21F 1/02 - Straightening

Abstract

The method for introducing a cored wire (2) into a bath (3) of molten metal consists in extracting the cored wire from a reel (9), especially from the core of the reel and in making it run into the molten metal bath (3), one part of the path travelled by the cored wire being formed in a guide tube (13), the distal end (32) of which is at a defined height (H) above the surface (PP') of the metal bath (3). The cored wire (2) is driven and subjected to a straightening operation under conditions practically not altering its substantially circular cross section and allowing it to be introduced and penetrate into the depth of the bath in a vertical direction. The installation (1) includes means (12) for driving said cored wire from a reel (9), in which the wire is extracted from the core of the reel, a guide tube (13) for guiding the cored wire (2), the distal end (32) of the tube being at a defined height (H) above the surface of the bath (3) and having a vertical direction, and means (12) for straightening the cored wire (2) that are placed in front of its entry into the guide tube (13), said straightening means being capable of giving the cored wire (2) a straight direction without altering its circular cross section. Preferably, the straightening means consist of a plurality of sets of two press rolls, the contact between the cored wire and each press roll being along a contact surface or along at least two lines of contact.

IPC Classes  ?

• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
• B21F 1/02 - Straightening

Abstract

The inventive cored wire comprises at least one thermal barrier layer and is characterised in that said layer is made of a material which initiates pyrolysis being in contact with a molten metal bath such as liquid steel.

IPC Classes  ?

• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Goods & Services

Chemical Compositions for Use in the Treatment of Metal Baths-Namely, Calcium-Silicon Powder, Boron, Magnesium, Lead, and Rare Earths Metal Cables and Cored Wire (Non-Electric) for Use in Ladle Treatment of Molten Metals [ Treatment of Materials for Others-Namely, Refining, Desulphurization, and Deoxidation of Steels ]