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WO/1992/003240A1 |
Device for use together with tapping vehicles for aluminium furnaces, magnesium furnaces, etc. The device comprises electrodes which are to be placed on the drainpipe of the vehicle in direct contact with the melt wich are sucked up, and...
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WO/1992/001818A1 |
In the particular embodiments described in the specification, a vacuum furnace includes a conveying arrangement for holding four solid metal members (16, 22) with their end faces (18) in closely-spaced relation and an energy beam gun (11...
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WO/1992/001820A1 |
In the representative embodiment described in the specification, an electron beam furnace (10) has an evacuation system (25) which maintains the interior of the furnace at a pressure in the range from about 50 microns Hg to 300 mcirons H...
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WO/1992/002112A1 |
The floor (22) forming the anode of the d.c. arc furnace proposed comprises a copper-plated steel sheet (221, 222) with a brick lining (42, 43, 44) made of electrically conductive refractory material. This gives the greatest possible con...
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WO/1992/001074A1 |
The noxious fumes leaving the dry hearth chamber (112) of a metal recovery furnace (102) are fed to an incinerator (106) where they are burnt at high temperature with oxygen. The hot, clean exhaust gas is introduced to the bath chamber (...
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WO/1991/018120A1 |
A smelting plant is disclosed with two adjacent, alternatively operated smelting furnaces (1/1, 1/2). The furnace gases produced during smelting are introduced into the other smelting furnace in order to pre-heat its charge. A shaft (12/...
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WO/1991/015727A1 |
Method and apparatus for controlling the raw material supply to a continuously operated electrical melting furnace provided with electrodes (4) extending from above into the melt, a plurality of supply means (5) for the raw material as w...
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WO/1991/014912A1 |
The object of the invention is a directcurrent electric furnace for melting raw material, especially scrap metal. According to the invention, a d.c. electric furnace is constructed comprising two consumable electrodes (21, 22) separated ...
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WO/1991/014911A1 |
A DC electric furnace for melting metal, which is capable of melting scrap quickly and reducing cold spots and hot spots developing on the furnace wall. The furnace is provided with an upper electrode, a plurality of furnace-bottom elect...
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WO/1991/013305A1 |
In a metallurgical unit with a tiltable vessel (3) supported on a travelling supporting frame, the vessel is fastened in a frame (41) which is supported on the supporting frame (63) by a frame-lifting device (62). As a result, lifting an...
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WO/1991/011658A1 |
The invention is a furnace which separates metals from their ores in a one-step process involving a rare carbon plasma reducing atmosphere. A secondary use is the injection of water into this atmosphere which causes an explosive flame, s...
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WO/1991/010872A1 |
A collecting pit (1) for receiving molten metal and cooling water in the event of defects in devices for smelting or heating metal has a drainage made from granular bulk material (5), in particular slag granules, and perforated covering ...
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WO/1991/005883A1 |
This invention relates to a melting apparatus of cutting scrap for melting cutting scrap such as aluminum cutting scrap into the molten metal of a melting furnace of aluminum or the like. A hopper (10) whose opening (11) is kept above th...
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WO/1991/000366A1 |
Described is a process for heating a metallurgical furnace, in particular an arc furnace charged with scrap metal or a similar solid material. Oxygen and fuel are fed in through the furnace wall by at least one burner located above the m...
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WO/1990/015163A1 |
A closed remelting furnace (1) comprises a vertical axis (A-A), an electrode support bar (15) for a melting electrode (23), a furnace body (29) with a drive for the electrode support bar and several bottom elements (6, 7) each of which c...
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WO/1990/010086A2 |
In a melting aggregate comprising an arc furnace (1) and a preheating shaft (2) for charging materials which is arranged beside the furnace, the outer walls of the preheating shaft are formed, in the lower part, by the wall (5) of the ve...
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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/1990/005886A1 |
A cooling panel which is intended to be positioned at the slag line of a tiltable steel-smelt arc furnace of the kind which is fitted with three electrodes, and in which the three electrodes give rise to three regions which are subjected...
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WO/1990/000627A1 |
In the particular embodiments of the invention described in the specification, a hearth (1) for melting and refining metal has a hearth bed (11) with cooling pipes (12) so that a skull (21) of molten metal is formed and energy input devi...
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WO/1989/008153A1 |
In a process for implementing reducing pyrometallurgical processes with oxyde ores, concentrates, intermediate products or metallic intermediate products by means of strongly reducing gases or oxygen-containing gases for producing and re...
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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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WO/1989/003966A1 |
A static kiln (10) includes an annular heating zone (68), the inner wall of which is defined by an approximately cylindrical core (48). The core (48) and the outer wall (22) of the heating zone (68) are suspended to permit movement due t...
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WO/1989/003011A1 |
A vessel for containing molten metal comprises a metal shell. At least a part of the shell is cooled by having water droplets applied to the outer surface of the shell at a rate which does not exceed the rate at which the droplets are va...
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WO/1989/002477A1 |
This invention relates to a method of preventing, during the melt-reduction of Cr ore or iron ore, the scatter loss of the ore and coal at the time of charging. In the present invention, the ore and coal are charged down into a furnace f...
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WO/1988/009388A1 |
A process for treating metal comprises applying a positive DC potential to an ionic melt layer disposed on the surface of a liquid metal. The application of this potential provides a plasma phase above the ionic melt layer and induces a ...
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WO/1988/004397A1 |
The scrap that is to be charged into an electric arc furnace (11) is preheated by a gas in a closed circuit (21, 20, 23, 22, 17) and this gas is heated in a heat exchanger (17) by the exhaust fumes from the furnace. A minor part of the c...
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WO/1988/000426A1 |
An induction plasma furnace comprises an inductor (1) housing a melting pot (2) the side wall of which consists of two vertically oriented sections (3) made of an electrically conductive material and electrically insulated from each othe...
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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/1987/006331A1 |
Method and device for pre-heating waste metal for furnaces, flue gases generated in a furnace (1) being supplied simultaneously or sequentially to two pre-heating places (3, 4) with waste metal containers (14), said flue gases being made...
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WO/1987/004729A1 |
High-temperature dirty gas from an electric furnace (1) is directly introduced into scrap preheaters (5a, 5b, 5c), where scrap (6) to be charged into an electric steel-making furnace is preheated. If some portion of heat generated in the...
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WO/1987/002124A1 |
Melting and holding furnace in which melting (1) and holding (2) chambers are separated from one another, and are connected via openings (6). The holding chamber is designed to be deeper in order to receive the melt which flows out of th...
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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/1986/005865A1 |
A burner (10) is mounted on top of a regenerator (11) by a pipe connector (13). The combustion chamber of the burner (10) communicates with the furnace interior via a tunnel (12) and with the interior of the regenerator (11) comprises a ...
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WO/1986/003282A1 |
Apparatus for the simultaneous smelting and refining of metal ores comprises a chamber (1) having parabolic-shaped internal top and bottom walls and a carbon electrode extending transversely across the chamber (1). Optionally the electro...
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WO/1986/002435A1 |
Provided for the tap hole (4) in the bottom (3) of a metallurgical vessel (1) is a closure apparatus comprising a shut-off member (6) which can close off the tap hole (4) from below, and a pipe (11) which is displaceable from above throu...
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WO/1986/001230A1 |
Method and apparatus for the continuous making of steel in an electric steelmaking furnace (10), having a charge material preheater (18), continuous charging means (44) and means for removing refined steel (80) without removing the furna...
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WO/1986/000880A1 |
A furnace comprises a basin (1) of a refractory masonry filled with a melt glass mass (4) and current leading elements (7 and 7a), located in the masonry and coming out on its working surface under the level of the melt and above it. The...
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WO/1985/004946A1 |
A method and apparatus for improving the efficiency of a heat generator in which combustible fuels such as fossil fuels, refuse, or other materials are burned. Flue gas (18) generated in the heat generator (12) and combustion air (16) ar...
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WO/1985/004675A1 |
Improvement to a treatment device, during the passage of a liquid alloy or metal stream based on aluminium or magnesium. The device comprises a ladle consisting of an outer metal envelope, an inner refractory lining, a shoot for the inle...
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WO/1985/004705A1 |
Casting furnace for the casting of metal or the like comprising a crucible (1) having a primary casting chamber (2) which is interconnected with one or more secondary casting chambers (3, 4) to allow the melt to flow from the primary cha...
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WO/1985/004190A1 |
A circumferential sealing assembly for use with a generally cylindrical, rotatable liquid metal reaction vessel (1) and a hood (14) which is provided to collect hot gases from the reaction vessel (1). The sealing assembly comprises a cab...
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WO/1985/003656A1 |
High temperature and/or melting furnace (112) for non-ferrous metals, which is provided with a dosing device (111) for automatically removing a predetermined quality of the non-ferrous metal melt (114) from a dosing chamber (131) connect...
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WO/1985/002251A1 |
A method for distributing, drying and heating a selected mix and weight of metals prior to melting in a furnace, including the steps of placing weights of selected metals in a feeder car (38) according to a predetermined distribution, lo...
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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/1984/000176A1 |
An oxygen-fuel burner of the rocket burner type includes a graphite burner block (11) for direct exposure to the interior of a furnace, and a cylindrical combustion chamber (115) formed through the hot face of the burner block and extend...
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WO/1983/002958A1 |
Method and system including apparatus for submerging, entraining, melting and circulating aluminum scrap in a molten metal media, which scrap is comprised of pieces not capable of self-submergence. The apparatus of the system includes me...
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WO/1982/004306A1 |
Electric furnace dome that is made especially of ceramic material and which has the necessary openings for at least electrodes and material feed, at which time the dome's center (2) inside of the tube systems (3) is cooled at least aroun...
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WO/1982/004267A1 |
An aluminum smelting furnace which incinerates waste containing useful metal such as aluminum using scrap tires as fuel recovering the aluminum from the waste. This furnace has a gas production oven having a fuel source of scrap tires, a...
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WO/1981/003696A1 |
A device for poking a charge fed onto the surface of a melt in an electric arc furnace having a hood and an external cooled casing (2) articulated at one of its ends to the lower section (21) of a horizontal circumferential bend in the w...
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