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WO/2001/040524A1 |
The invention relates to a metallurgy, in particular to a device for loading a blend into a shaft furnace, mainly a blast furnace. The device comprises the following equipment arranged along the vertical axis of the blast furnace: a feed...
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WO/2001/038588A1 |
The invention concerns a cupola for producing melt iron, comprising a vessel (2) for heating the materials to be smelted by burning combustion products inside the vessel (2), means (21) for loading the vessel with materials to be smelted...
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WO/2001/036891A2 |
A method known per se, for operation of a smelting oven comprises charging a smelting zone with feedstuffs, fuel, a first oxidising agent and a second oxidising agent, whereby at least the second oxidising agent is injected into the smel...
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WO/2001/023622A1 |
The invention concerns a sealing device (10) comprising a sealed valve cage (22) and a sealing seat (24) provided with a passage orifice (26). A mobile valve (28) is provided with a sealing peripheral surface (30) which co-operates, in a...
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WO/2001/021843A1 |
The invention relates to a method for introducing bulk material into a metallurgical vessel, especially for introducing scrap into an arc furnace, which has at least one centrally situated electrode in an upper vessel part that is gas-ti...
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WO/2001/020045A1 |
According to the prior art, copper cooling plates (10) are fixed to the furnace armour plate (15) of metallurgical furnaces by elastically, gas tightly connecting the coolant pipes (13, 14) to said furnace armour plate (15) using compens...
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WO/2001/018259A1 |
Gravitational type furnace for the direct reduction of mineral iron comprising a median reaction zone (16) in which the reactions to reduce the mineral iron occur, means (12, 13) to feed the mineral iron to said reaction zone (16), distr...
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WO/2001/018257A1 |
Gravitational type furnace for the direct reduction of mineral iron comprising a median reaction zone (14) in which the reactions to reduce the mineral iron occur, means (12, 13) to feed the mineral iron to said reaction zone (14), means...
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WO/2001/018260A1 |
Gravitational type furnace for the direct reduction of mineral iron comprising a median reaction zone (14) in which the reactions to reduce the mineral iron occur, means (12, 13) to feed the mineral iron to said reaction zone (14), distr...
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WO/2001/018258A1 |
Device for the direct reduction of iron oxides of the type with a gravitational load, comprising a reactor defining, in its upper part, at least a zone inside which the reduction reaction occurs, means (14, 15) to introduce the load thro...
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WO/2001/014598A1 |
A method and apparatus for simultaneously supplying varying proportions of hot and cold direct reduced iron (DRI) material from a source of hot DRI for melting, storage, briquetting or transport. The system uses gravity to transport hot ...
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WO/2001/000884A1 |
The invention relates to a feed device (100) for a shaft furnace (101) comprising a revolving chute (107, 111) having a cylindrical basic body (107) that can be rotationally driven around a first substantially vertical axis of rotation (...
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WO/2000/066794A1 |
The invention relates to a throat closing device for shaft furnaces, especially blast furnaces having a material feeding hopper (1), to which a temporarily rotating rotary hopper (2) which is sealed with regard to the stationary parts (3...
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WO/2000/065101A1 |
A method for automatically controlling an opener holding a drill rod by exerting an impact on or by rotating the opener and by moving back and forth the opener by means of a feed motor hydraulically driven so as to open an iron notch com...
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WO/2000/051946A2 |
The invention relates to a method for burning lumpy combustion material, especially limestone, dolomite and magnesite, in a regenerative shaft furnace consisting of at least two shafts (1, 2), which have a pre-heating area (A) and a comb...
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WO/2000/046410A1 |
The invention relates to a blow form for shaft furnaces, especially blast furnaces or hot-blast cupola furnaces, comprised of a conical hollow body with an inner and outer casing and of a frontal part which connects the same. The hot air...
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WO/2000/045090A1 |
A gasification melting furnace which is used to prevent the occurring of low-temperature regions in the gasification melting furnace and concentrate a firing point for incineration of wastes, and which comprises a vertically-movable furn...
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WO/2000/040762A1 |
The invention relates to a bell and hopper for shaft furnaces, especially for blast furnaces, with a charging bin with a feed tube, a rotating chute carrier with a drive unit, and a swiveling chute in the inner of the furnace with drive ...
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WO/2000/038496A2 |
The invention concerns a method for optimising the operation of a tank furnace comprising nozzles which consists in making fine particles of prereduced ore. The fine particles of prereduced ore are mixed with a solid carbon reducing agen...
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WO/2000/020646A1 |
The invention concerns a device for dispensing bulk materials through a rotary chute with variable angle of inclination comprising an underslung rotor (22) mounted in a supporting frame (34) so as to rotate about a substantially vertical...
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WO/2000/020647A1 |
The invention concerns a device for dispensing bulk materials comprising a vertical rotor (22) wherein is suspended a chute (14) so as to pivot about a substantially horizontal pin (26). A guiding device (68¿i?, 70¿i?) interlocked in r...
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WO/2000/009765A1 |
The invention relates to a shaft furnace, especially a direct reduction shaft furnace, with a charge of lump materials (2), especially materials containing iron oxide and/or spore iron, which can be introduced into the furnace from above...
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WO/2000/005424A1 |
The invention relates to a method for producing zinc using the IS process in an IS shaft furnace and to an IS shaft furnace for carrying out said method. To be able to utilize dust containing zinc in a simple manner the invention provide...
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WO/1999/063122A1 |
The invention relates to a method for thermally treating agglomerates in a number of successive handling zones in a reactor. According to the invention, the agglomerates are continuously fed to a feeding zone, are dried and heated in a d...
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WO/1999/060320A2 |
The invention relates to an additional embodiment for the arrangement of a lower annular suction and gas relaxation chamber (12) on a coke-heated circulating gas cupola furnace for material and/or energetic recycling of waste materials h...
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WO/1999/053105A1 |
The invention concerns a method for making stainless steel or steel with high alloy addition content from solid metal products in an electric furnace with two separate zones, namely a melting zone and a metallurgical processing zone, com...
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WO/1999/047711A1 |
Wall structure for a metallurgical vessel at the location where the vessel wall, on the hot side, is in contact with liquid metal and/or liquid slag, in particular for the hearth of a shaft furnace, comprising a steel plate lining (2), i...
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WO/1999/028510A1 |
The invention concerns a method for cooling a shaft furnace loading device, said loading device being equipped with a ring-shaped rotary joint (40), provided with a fixed ring-shaped part (56) and a rotating ring-shaped part (46), for su...
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WO/1999/027141A1 |
The invention relates to a smelting furnace to smelt metals, especially steel scrap. The inventive furnace consists of a lower receptacle with a tap hole in the bottom and an upper receptacle which can be closed by a lid. A central pipe ...
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WO/1999/025881A1 |
The invention relates to a device for withdrawing lumpy material, especially lumpy material containing iron oxide and/or sponge iron, from a shaft furnace, especially a direct reduction shaft furnace. The withdrawal device consists of wo...
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WO/1999/024626A1 |
The invention relates to a shaft furnace (1), especially a direct reduction shaft furnace, with a charging stock (2) of lumpy material, especially lumpy material containing iron oxide and/or sponge iron, and conveyor screws (3) for remov...
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WO/1999/011825A1 |
A device for producing sponge iron from iron oxide lumps consists of a reduction shaft in which a hot dust laden reducing gas is delivered. Said gas is produced in a gas generator by means of partial oxidation of solid carbon carriers an...
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WO/1999/009219A1 |
The probe scanning system consisting of a horizontal probe, probe-positioning mechanism with a drive, burden material defining sensor, probe displacement transducer, limit switches, a computing device, a unit of analog-to-digital convert...
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WO/1999/004045A1 |
The invention relates to a shaft furnace (1), especially a direct reduction shaft furnace, with a fill (2) of bulk material, especially bulk material containing iron oxide and/or sponge iron, discharge devices (4) for the bulk material a...
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WO/1998/058087A1 |
This invention relates to a distribution device within the top of blast furnace and, particularly, to chute feeder drived by steel cable. The chute feeder comprises a system for chute oscillating which consists of steel cable and assembl...
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WO/1998/046954A1 |
The present invention relates to a method and a furnace for electric calcining of carbonaceous material for the production of graphite or graphite-containing material. Carbonaceous materials supplied to the top of a vertically arranged f...
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WO/1998/038465A1 |
The apparatus is intended for application in metallurgy and lime production, and mainly for furnaces, providing a uniform shaft-symmetrical charge distribution. The apparatus consists of vertically driven bell (1), located in the clearan...
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WO/1998/030345A1 |
The invention concerns a method of producing a cooling plate (50, 80) with integral coolant ducts (52, 84) for an iron or steel-making furnace. A preform of the cooling plate (50, 80) is continuously cast by means of a continuous casting...
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WO/1998/028448A1 |
A smelting reduction apparatus and a method for producing molten pig iron are disclosed. Iron ore, sintered or pelletised iron are used, so that the discharge operation from a pre-reducing furnace (12) to a melter-gasifier (11) would not...
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WO/1998/021536A2 |
An operating method for a cupola melting furnace. Metal charging stock, alloying elements and energy carrying substances such as coke are added in the upper part (1) of the shaft. An oxidyzing medium such as air is added in the lower par...
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WO/1998/021537A1 |
A device for discharging or mixing lump materials from a shaft furnace with a hollow body for discharging the reaction materials open at the bottom and/or at least to one side, has screws arranged in a star-shape in the hollow body. Thes...
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WO/1998/004878A1 |
The method of melting oxidic slags and combustion residues with a minimum content of 3 % by weight of metallized components, such as iron and/or carbon carriers, is carried out in a shaft furnace (1) that is directly heated via burners (...
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WO/1998/000568A1 |
An arc furnace has a furnace vessel, a furnace inner chamber and at least one electrode (4) that projects into the furnace inner chamber. The furnace is characterised by an electrode receiving chamber (5) accessible from one side of the ...
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WO/1997/046842A1 |
A vertical heat treatment device with a good uniformity and repeatability. A heater (21) of a heating furnace (2) is at the side of the heat treatment region (13) in a process chamber (1). Therefore the heat temperature distribution in t...
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WO/1997/038140A1 |
A liner (32) and lining method for a vertical shaft metallurgical vessel (30). The liner (32) includes a working lining (50) within the shell of the vessel (38) and a secondary lining (42) exhibiting fluid properties, such as a dry-vibra...
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WO/1997/036012A1 |
A process is disclosed for recovering and disposing of wet residues produced in cupola furnaces and the metals contained therein, the dust being captured by a filter device. The process is characterised in that the wet residue components...
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WO/1997/033134A1 |
The invention relates to a process for melting of metal materials substances in a shaft furnace. During said process, coke is burned with pre-heated air and substantially clean oxygen, and the flue gases heat in counterflow the metal cha...
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WO/1997/023654A1 |
A method is provided to improve the pneumatic delivery of plastics-containing materials into a reaction vessel. The invention provides a method for the pneumatic delivery of plastics-containing fine-grained materials into a reaction vess...
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WO/1997/022668A2 |
The invention relates to a process for producing raw burnt ultramarine in which production is continuous, and a device for implementing it. The device consists of a reactor unit composed of chambers (I, II, III) mutually separated by con...
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WO/1997/017473A1 |
The production of highly metallised feed, an intermediate product produced solely by gaseous reductants in two stage reduction processes of that kind, encounters sticking problems, which interfere with continuous processing and productiv...
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