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WO/1997/006060A1 |
A method and apparatus for pouring molten metal in a crucible (2) over a pouring lip and into an opening (24) in a mold (22). The crucible (2) and the mold (22) are inside a chamber under vacuum, and the crucible (2) is supported on a ho...
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WO/1997/005440A1 |
A heated crucible apparatus (10) allows the adjustment of a thermal profile within a combustion chamber (12) surrounding the crucible (15) by introducing a sub-stoichiometric or a super-stoichiometric mixture of fuel and oxidant into the...
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WO/1996/034994A1 |
A method and mandrel apparatus (55) for making a unibody containment structure, such as a crucible (40) formed of PBN, having a negative draft (B), via chemical vapor deposition.
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WO/1996/035091A1 |
A unibody, monolithic, one-piece negative draft crucible (40) for an MBE effusion cell. The crucible maximizes capacity, uniformity and long term flux stability, and minimizes oval defects, depletion effects, and short term shutter-relat...
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WO/1996/013349A1 |
A ladle (1) comprising a main portion (5), an outlet (3) and an inductor assembly (2) fitted onto the main portion. The main portion comprises a cavity (13) defined by a refractory lining, provided with at least one opening (21) and shap...
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WO/1995/035014A1 |
Described is a low-loss induction coil (2) for heating and/or melting metallic materials, the coil having windings formed by lengths of hollow tubing (3, 4) carrying a fluid coolant. In the central zone of the induction coil (2), the cur...
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WO/1995/033964A1 |
Dual electric/gas heating in a crucible melting furnace with segmental lining, and linings and segments of linings for same.
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WO/1995/025824A1 |
A method and apparatus for continuously producing metals such as zirconium, hafnium, titanium, niobium, vanadium, silicon and tantalum. The corresponding metal halide is reacted with a metallic reducing agent such as aluminum, calcium, m...
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WO/1994/029052A2 |
A process is disclosed for manufacturing refractory crucibles for steel processing ladles in which aluminium desoxidation for completely killing liquid steel is carried out. A silicium dioxide-containing, monolithically hardenable high a...
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WO/1994/028366A1 |
A modular inductor (4) for a channel induction furnace comprises secondary circuit duct means in the form of an inverted U shaped ceramic pipe (7) and an open bottomed ceramic canoe (8). One end only (11) of the secondary passageway defi...
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WO/1994/024505A1 |
A crucible capable of withstanding high temperatures and receiving materials to be melted, decomposed or generally converted while avoiding any physical or chemical interaction between the material making up the crucible and its contents...
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WO/1993/018868A1 |
Process and device for the treatment of polluting molten meltable and electrically conducting materials consisting in feeding the waste materials into an induction furnace (11, 40) comprising an inductive circuit (1, 39), directly induct...
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WO/1993/017135A1 |
The invention relates to a method for recovering non-ferrous metal from a dross starting material containing this metal, optionally together with non-ferrous metal scrap, and/or a starting material comprised of such scrap. The method com...
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WO/1993/015860A1 |
A method and apparatus for controlling slag in a tilting furnace (12). The apparatus (24) is mounted on a trough (22) extending from the furnace tap hole and has a reservoir (36) for receiving the flow from the trough (22). The reservoir...
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WO/1993/010413A1 |
A melt-in aggregate has a furnace vessel (11) mounted on a furnace cradle (13) and closable by a lid (12), as well as stick electrodes (28) that can be lifted and lowered into the furnace vessel (119) by means of electrode lifiting means...
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WO/1993/005626A1 |
In order to improve cooling and start conditions of a D.C. arc furnace, its hearth electrode is made of at least one metal rod that extends through the wall of the hearth and is cooled by at least one cooling channel that extends along t...
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WO/1992/003896A1 |
An arc is drawn between a movable electrode (E) (preferably graphite), and a fixed electrode (7) in a furnace when smelting metal oxides using a plasma. Shielding gas, e.g. N, is introduced into plenum (P) about the movable electrode (E)...
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WO/1991/012477A1 |
The furnace (70) includes a heating element (72) which is restrained from growth during operation of the furnace (70) by retaining spacers (84) which provide a yoke (88) around the individual coils (102) of the heating element (72) and w...
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WO/1991/010105A1 |
A method and corresponding apparatus for improving the control and efficiency of a combustion reaction in a flash smelting furnace (10), by introducing a mixture of a first oxidizing gas (26) with combustible and noncombustible solid par...
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WO/1991/004348A1 |
A gaseous deposition source for providing a deposition material that emanates from a crucible (10) having multiple thin film heating elements (22, 24) formed thereon, with each adjacent pair being separated by an insulating layer (23) th...
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WO/1990/013381A1 |
An induction melting and casting furnace (10) is described which includes casting stations (14, 16, 18) disposed around the melt chamber (12) of the furnace (10), each casting station (14, 16, 18) having a tundish (28, 32) for selectivel...
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WO/1990/013781A1 |
A vacuum induction furnace comprises, coaxially mounted in a vacuum chamber (1), a crucible (3), a metal bottom plate (5) located in the lower part of the crucible (3), and an inductor (4) embracing the crucible (3). The crucible (3) con...
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WO/1990/006481A2 |
Furnace for melting down scrap iron and similar ferrous materials comprising a tiltable vessel (1') with a refractory-lined hearth and at least partially water-cooled side walls, a removable cover (19'), at least one electrode (17'), and...
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WO/1989/008230A1 |
The furnace comprises a lined working chamber (1) with sheathing (2), heaters (4) located under the furnace roof, a metal guide (5) for delivering the metal and a running magnetic field inductor (9) mounted outside the working chamber (1...
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WO1988008831A1 |
Ceramics having excellent resistance against fusing damages due to molten metal or other inorganic material are disclosed. When in contact with a molten material such as molten metal or glass, members made of conventional boron nitride (...
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WO/1987/007307A1 |
A method for melting a metal in an induction plasma furnace consists in melting the metal (2) by means of the plasma arc (8) and the magnetic field of the inductor (4) and in effecting an interaction between the plasma arc (8) and the ma...
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WO/1987/007468A1 |
An induction plasma furnace comprises a refractory crucible (1) embraced by an inductor (2), a plasmatron (3) mounted above the crucible (1) and connected to a power source (4) and a hearth electrode (5) mounted in the bottom of the cruc...
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WO/1987/006332A1 |
An arrangement for steel making with inductive stirring of the steel melt in a steel melt container. It is desirable for the various parts of the steel melt to be forced up to the surface, while at the same time being mixed, in order to ...
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WO/1987/001137A1 |
A method for treating a melt consists in forming a flow of low-temperature plasma (2), feeding it into the melt (3) through the surface of the melt (3) at a speed of about 1,500 m/sec and feeding admixtures passed through the flow of pla...
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WO/1987/001187A1 |
Prefabricated melting crucible of a refractory material for insertion in an induction melting furnace, consisting of an essentially hollow cylindrical body (4), the walls (5) of which on the lower side merge as one piece with the floor (...
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WO/1986/002436A1 |
To reduce the amount of coolant needed relative to a pressurized furnace cooling system a spray cooling system for the sidewalls and/or roof of a furnace is provided. In the invention, spray headers and pipes (14, 16 and 18) supply coola...
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WO/1986/001131A1 |
Method and apparatus for high temperature heating, melting, refining and superheating of materials, such as steel scrap, metals, ceramics or glass. The invention provides an economizing method of hydrocarbon fluid fuel combustion in an o...
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WO/1984/004477A1 |
A composite refractory product, for example a subentry nozzle (22), for use in the pouring of molten metal comprises a body (26) of refractory material having therein or thereon a flexible gas-impermeable membrane (23) formed from a comp...
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WO/1984/003352A1 |
The furnace for melting metals comprises a lined casing (1), a crucible(2) and a partition (3) which subdivides the crucible (2) into a melting chamber (4) and a collecting chamber (5), which chambers are connected therebetween. An inter...
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WO/1983/004419A1 |
A casting device, particularly a converter (1) for casting and/or post-treating molten metal, is provided with a tipping mechanism. A tipping arm (5) comprises at least two rotation or tipping axes (3, 6), while a guiding segment (14) as...
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WO/1983/000165A1 |
A furnace, for melting metal swarf, comprises a molten metal bath to hold metal up to a given level (M), a first crucible (7) supplied with hot combustion gas from a burner (6) so as to serve as an immersion heater for the bath, a second...
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WO/1982/003451A1 |
A method of lining a metallurgical plant, in particular an induction furnace (1) includes the following subsequent actions. First of all the furnace hearth (2) is lined, then a form (3) is placed thereon to shape the internal surface of ...
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WO/1982/000341A1 |
Prior to the receipt of a charge of molten metal, a ladle (11) is heated by a direct flame, by applying a seal (20) to the rim (14) of the ladle (11) and directing an air stream through a heat exchanger (21) and to the ladle (11), mixing...
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WO1982000193A1 |
Apparatuses for melting and dispensing thermoplastic material in the prior art have slow melting and slow flow velocity of the thermoplastic material. A heater module adapted to be used in an apparatus for melting and dispensing thermopl...
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WO/1981/002339A1 |
A substantially spherically-shaped electric melting furnace (22) includes a carbon-lined crucible (80). The interior of said crucible is sealed from the atmosphere outside the crucible and a vacuum pump (68) and venturi device (72) contr...
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WO/1980/002063A1 |
Prior to the receipt of a charge of molten metal, a ladle (11) is heated by a direct flame, by applying a seal (21, 225) to the rim of the ladle and directing air through a heat exchanger (29, 229) and to the ladle, mixing fuel with the ...
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JP7514548B2 |
To provide a degassing crucible with high durability and safety capable of improving the quality of a nonferrous metal product by increasing the efficiency of a gas blowing step.In a crucible 10, a bubble generation face 12 having a poro...
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JP2024092946A |
A molten metal holding furnace is provided in which the opening and closing time of the lid is shorter than in the past. SOLUTION The molten metal holding furnace includes a crucible that holds molten metal, and an openable lid that is p...
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JP2024523272A |
The present invention relates to the field of steelmaking technology, and relates to a bottom electrode composite bottom blowing multimedia system and method for DC arc furnace, which includes a bottom blown electrode located at the bott...
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JP2024082015A |
The present invention provides a temperature measurement structure that prevents contamination of an optical window provided in a vacuum melting furnace and enables the temperature of the molten metal inside the furnace to be accurately ...
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JP7494487B2 |
To provide an induction heating apparatus that can shorten an installation period while easily being transported even when the size is increased.An induction heating apparatus 100 includes an induction heating coil 10 wound around the ou...
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JP2024520992A |
A method for recycling aluminum alloy scrap includes the steps of: performing selective oxidation roasting and washing treatment on the aluminum alloy scrap to obtain uncoated aluminum alloy scrap; melting the uncoated aluminum alloy scr...
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JP2024059590A |
An electrode vibration detection module (EVDM) and a method for detecting vibration of an electrode in an electric arc furnace (EAF) using the EVDM. An EVDM receives and/or receives waveform signals corresponding to voltage and current v...
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JP2024517698A |
The control system includes a vision system that includes an imaging device and a VAR monitoring system configured to determine power adjustment stages of the VAR process based on images from the vision system and process parameters. The...
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JP2024517105A |
The present invention relates to a remelting plant having one or more melting sites and having a portal structure, such as, for example, a vacuum arc remelting furnace (VLBO/VAR) or an electroslag remelting plant (ESU/ESR). The plant has...
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