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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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JP7464026B2 |
To provide a bolt fastening structure that can prevent the breakage of a bolt due to thermal expansion and a silicon monocrystal pulling-up device including the same.A bolt fastening structure is to hold and fix at least a first member 2...
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JP2024048210A |
An object of the present invention is to provide a single crystal manufacturing apparatus and a single crystal manufacturing method that have excellent cooling efficiency. [Solution] A crucible that accommodates a solution containing car...
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JP7457321B2 |
To provide a method for manufacturing a FeGa alloy single crystal, capable of controlling the concentration difference of the content of gallium in the same single crystal to an atomic weight% of 1% or less, and a lid put on a crucible.A...
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JP2024040648A |
An object of the present invention is to provide a repair method for an electric furnace that can reduce the amount of refractory waste when repairing the electric furnace. [Solution] In an electric furnace for melting an iron source, wh...
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JP7445743B2 |
In order to provide an elemental analysis device that enables the dust filter replacement frequency to be reduced, and enables the time and labor required for maintenance performed by a user to also be reduced, there is provided an eleme...
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JP7437097B1 |
An object of the present invention is to provide a heater for an electric melting furnace that is used with a cylindrical heating element, has higher heat insulation properties, and is capable of more efficiently transmitting heat to mol...
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JP7415362B2 |
To provide an induction furnace capable of further increasing a voltage applied to a coil.An induction furnace 10 includes a crucible 14 for housing a heated material 12, a coil 16 wound on an outer periphery of the crucible 14 and havin...
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JP2024004652A |
The present invention provides a single crystal growth apparatus and a single crystal growth method capable of growing single crystals with high productivity that have a high melting point of about 1800°C or higher and require oxidizing...
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JP2024500256A |
It belongs to the technical field of semiconductor phosphide production, and includes a furnace body, a shielding storage box provided above the furnace body by a lifting mechanism, a phosphorus source carrier installed in the shielding ...
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JP2024000791A |
[Problem] To suppress wire breakage with high output and efficiently transmit heat to molten metal. [Solution] In a melting furnace 200 or a melting and holding furnace, electric heaters 100 that heat molten metal M used for melting or t...
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JP7408953B2 |
Provided is a diagnostic method for an induction furnace. In an induction furnace, even if the resistance value of an insulator between a coil arranged on the outer side of the furnace and the ground is reduced due to moisture adsorbed o...
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JP7403098B2 |
A crucible for growing a metal oxide single crystal is provided that can facilitate the balance between the thickness and the strength (hardness) of the constant diameter portion of the crucible and is capable of performing growth of a c...
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JP2023180186A |
To provide a furnace top cover of reducing breakage such as cracking caused by expansion in a furnace top cover, and an induction furnace with the furnace top cover installed.A furnace top cover 1 comprises a cover member 10 and an engag...
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JP2023176374A |
To provide an induction furnace which makes it possible to acquire the state of the furnace without requiring the confirmation operation for the furnace by an operator with visual inspection or measurement or the like.Provided is an indu...
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JP7385560B2 |
A furnace for electromagnetic casting a tubular-shaped silicon ingot is provided. The furnace includes a mold, outer and inner induction coils and a support member. The mold includes an outer crucible and an inner crucible. The outer cru...
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JP7379999B2 |
To provide an induction furnace capable of efficiently removing impurities in valuable metal and collecting metal and having improved durability.An induction furnace 10 includes: a furnace body; an induction coil 13; an induction heating...
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