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Rocking calcining furnace, for example for expanded clay calcining contains a lined housing installed on bearing rollers with sector cuts, burner units and a drive. The lined housing is mounted using sections formed by two identical subsections. Subsections are made of even number of minimum 4 identical isosceles triangles which are alternately connected along the subsection perimeter with minimum 4 identical equilateral triangles with formation of small and large end face polygonal holes. Meanwhile in the section two subsections are joined to each other by sides of larger end face holes, and the sections are joined to each other along the length of the lined housing by their sides of small end face holes with formation of multiturn screw drum with the mutually directed broken screw lines. |
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Rocking calcining furnace, for example for expanded clay calcining contains a lined housing installed on bearing rollers with sector cuts, burner units and a drive. The lined housing of the furnace is fabricated along the perimeter from alternately connected cylindrical sections and zigzag sections. The zigzag sections are mounted from subsections, each is formed by two rectangles and two parallelograms with formation on end faces of square sections, meanwhile each subsequent subsection is rotated with reference to the previous one to the angle 180°. |
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Energy extraction from gases in blast-furnace unit Invention relates to gases cleaning in the blast-furnace unit. Method is suggested for thermal power generation from compressed cold air blow of the blast-furnace used with system of waste-heat turbine of blast-furnace gas in form of the turbine expander (20), containing at least one compressor (12) of compressed cold air blow connected with at least one air blow pre-heater (14), at that flow of the compressed blast-furnace gas exhausted by the blast-furnace (10) passes through the blast-furnace gas cleaning device (24) and is supplied in the turbine expander (20) connected with power consumer (34). From the cold air blow heat is extracted, it at least partially is transferred to the cleaned blast-furnace gas upstream the turbine expander (20). Besides, installation for thermal power extraction from the compressed cold air blow of the blast furnace is suggested, it contains device for heat extraction from the compressed cold air blow and its at least partial transfer to the cleaned blast-furnace gas upstream the turbine expander. |
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Pit furnace for bulk material baking Pit furnace comprises cylindrical lined pit, loading and unloading devices, duct for furnace gases exhaust, gas pump connected by suction branch pipe with furnace gases duct and by discharge branch pipe with header of furnace saturation gas, fan for air supply to the furnace. Top part of the pit is connected with hollow shaft asymmetrically located above the loading device. On the hollow shaft a wind wheel and impeller are installed, and the wind wheel blades and impeller blades during synchronous movement create the tapering cone of rotation. The connecting elements, at least four, between the top part of the cylindrical lined pit and hollow shaft are uniformly located along its perimeter, and between the wind wheel and impeller output windows are made in the hollow shaft. |
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System of automatic control of metal heating in heating furnaces of discontinuous operation Invention relates to the metallurgy and can be used for automatic control of the thermal mode of the heating furnaces with discontinuous operation. System of automatic control of the metal heating in the heating furnaces of discontinuous operation containing block of task generation for metal thermal absorption, block determining the metal thermal absorption comprising heat meter and differentiator, three comparing units, air flow regulator, block of task generation for lining temperature change rate, block determining the lining temperature change rate, fuel flow regulator; first inputs of the first and second comparing units are connected with output of the block determining the metal thermal absorption, and second outputs are connected to output of the block of task generation for metal thermal absorption, output of the second comparing unit is connected with air flow regulator, output of the first comparing unit is connected to the block of task generation for lining temperature change rate, its output is connected with the first input of the third comparing unit, its second input is connected to the block determining the lining temperature change rate, and output of the third comparing unit is connected with fuel flow regulator, additionally block determining rate of scale thickness rise, block for setting as per scale minimum, forth comparing unit are included, at that output of the block determining the metal thermal absorption is connected with input of the block determining rate of scale thickness rise, its output is connected to the first input of the forth comparing unit, its second input is connected with the block for setting as per scale minimum, and output of the forth comparing unit is connected with air flow regulator. |
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Heat-conserving cartridge is suggested, it contains set of shaped tubes filled with heat insulator, and tied up by rods at both ends. It is installed at the ignition furnace output and is provided with rod passing between the specified rods through the set of shaped tubes of the cartridge. The rod is permanently secured relatively to the cartridge tubes, and has two cylindrical areas for the movable connection with drive of the cartridge reciprocating movement by means of the levers. The specified cylindrical areas of the rod are located symmetrically relatively to the longitudinal axis of the cartridge. There is possibility of cartridge horizontal movement in the ignition furnace and from it. |
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Integrated gas cooling system of electric arc furnace Invention relates to a cooler of combustion gas for cooling of raw, hot combustion gas from the electric arc furnace of the cast iron and steel making enterprise. Each combustion gas cooler has a gas-inlet chamber, a gas-outlet chamber and an array formed by gas-cooling pipes, extended between the inlet chamber and the outlet chamber and laid into them. Each gas-cooling pipe has a bell-shaped input end with aerodynamically curved profile for gas acceleration, that is efficient for providing of laminar current of combustion gas in a gas-cooling pipe. Also the method and the device for cooling and purification of the furnace combustion gas and the system of the furnace combustion gas heat utilisation are described. |
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Invention relates to devices for drying a liquid-containing object, in particular restoration of a dental object. The device contains means for the generation of thermal energy, influencing the object and sufficient for increasing the object temperature to a boiling point, and has an area of a thermal impact on the object and a controlling device, a thermosensitive element, made with a possibility of measuring the object temperature and sending a signal to the controlling device when the launch temperature a little lower or higher than the boiling point is achieved. The method of the object drying is described. |
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Device for thermal treatment of bulk materials Invention relates to building equipment, in particular, to vertical ovens and may be used in the building field for thermal treatment of finely dispersed (dust-like) bulk materials, for instance, lime, cement, metakaolin, periclase etc. The device for thermal treatment of bulk materials includes a thermal treatment chamber where bulk material particles move spiralwise downwards along the chamber walls as a result of gravity action force, aerodynamic action force and centrifugal force. The rotor in the chamber provides for rotational movement of gas and bulk material captured by gas around the rotor. The gas removal device usage in the chamber with bulk material separation leads to the material fine particles losses exclusion. |
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Ceramic products burning oven includes the main channel filled with products and a circulation channel positioned along the main channel length, with gas transportation devices ensuring gas circulation by way of gas collection from the main channel and its return through the circulation channel into the main channel on the opposite side. All the oven channels are divided into sections with transversal partitions and holes. |
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Furnace includes a housing and many electrodes, namely with a circular cross-section, which are installed in the furnace housing with certain location relative to each other along an arc of a circle. Besides, at least one of the electrodes is made in the form of a beam of electrodes from individual electrodes (1a, 1b), namely in the form of a double electrode. |
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Vertical fluidised-bed furnace Invention relates to designs of furnaces with fluidised bed for treatment of loose materials in inert, reducing or oxidising media. A furnace includes a heating chamber opening through 180 degrees in a vertical plane for quick cooling, a removable quartz reactor with a grate, a loading device in the form of a plastic pipe with a sealing and cleaning gasket and an unloading device operating as per a vacuum venting principle. With that, the grate of the reactor is made from quartz glass in the form of a flattened cone with holes on side walls and on the vertex of the flattened cone. |
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Ore-thermal furnace with hot hearth and high-current lead Ore-thermal furnace comprises: a transformer with low voltage (LV) inputs and outputs, connected by current leads to an electric contact clamp of a reversible-movable electrode and an external electric contact terminal of a hearth electrode, with a lined furnace bath arranged on top of the hearth electrode of the carbon current-conducting hearth, installed into a tight metal jacket and closed with a vault. The furnace is equipped with an electroconductive heat insulation layer (ECHIL) arranged between the hearth electrode and the carbon current-conducting hearth, made of electroconductive support columns from graphite or silicified graphite of a cylindrical, square or plate shape arranged in concentric rows or in a staggered order with the space filled between the specified columns with a material inert in respect to them, such as soot, finely dispersed powdered graphite or boron carbonitride. |
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Method and device to measure electrode length Invention relates to metallurgy. Measurement is carried out with the help of radiolocation. At the same time the radar transceiving device is connected with the help of a device for connection of a wave guide with a wave guide located on an electrode. The waveguide is located in direction of electrode consumption from the end cross section of the electrode to the consumed cross section of the electrode. They measure time difference between sending a radiolocation signal and reception of an echo signal produced when reflected from the point of break in waveguide continuity in the consumed cross section of the electrode. By the specified difference they determine electrode length. |
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Biomass utilisation plant and method Invention describes a structure of a biomass utilisation plant by means of gasification or pyrolysis, in which a vertical cylindrical reactor with a solid particle bed in its lower part, which is provided with devices for supply of biomass and medium under pressure to the solid particle bed, as well as devices for collection of combustible gasification products at the outlet in its upper part, located coaxially inside the annular reactor containing a layer of a granulated catalyst of complete oxidation in its lower part, and provided with a gas-distributing grid and devices for fuel and air supply to a catalyst layer, as well as devices for collection of combustion products, which are located in its upper part. To external surface of the internal reactor there welded are flat ribs from material of the reactor housing, and between branch pipes for supply of biomass and medium under pressure there arranged is a gas-distributing grid above which there located is an organisational head piece, a non-isothermal grid and a heat exchanger, and gaseous gasification products are supplied to the branch pipe for supply of medium under pressure. The lower part of the annular reactor is provided with particles of a catalyser of deep oxidation of substances mixed with disperse particles of inert material, and above the gas-distributing grid there located is the organisational head piece, the non-isothermal grid and the heat exchanger. |
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Shaft furnace for ceramic materials burning Shaft furnace contains a burning channel for charge loading, in its bottom part the products unloading device is installed with charge lowering device. In furnace top part has loading device containing device forming charge beds in form of the 3D manipulator installed above the furnace interacting with the device for products feeding to the furnace, and support for the formed beds in form of the horizontal movable forks created by set of parallel rods with rectangular cross-section connected with each other from one end and made with possibility of installation between product rows in the charge. Along perimeter of the furnace top edge the horizontal platform is made, installed with possibility of vertical reciprocative movement relatively to the furnace. On one side of the platform the movable cover is horizontally installed covering the burning channel from top. On the other relative the furnace side of the platform there are forks with drive ensuring horizontal reciprocative movement. In the extended work position the forks are located under the manipulator and above the burning channel cover. |
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High pressure chamber and method of high pressure chamber cooling This invention relates to treatment of items with hot pressing, preferably by hot isostatic pressing. The pressing device comprises a furnace chamber located inside a high pressure chamber of a device and surrounded with a heat insulated jacket. Under the furnace chamber there is the lower insulating section. For circulation of the working medium under pressure in the furnace chamber there is a fan with adjustable number of rotations. In the device there is at least one supply channel with an outlet. The specified channel provides for connection between the zone under the lower insulating section and the fan inlet for mixing of the flow from the specified zone with a flow in the channel above the lower insulating section and below the furnace chamber. At the same time it is possible to adjust the specified mixed flow by correction of number of fan rotations. |
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Method and device for hardening of steel parts and steel parts thus hardened Set of invention relates to hardening of steel parts. Steels parts are heated to 950-1200°C, some 30-100% of part surface being heated by direct heat radiation falling at spatial angle of 0.5-2 srad of the heater. Part is subjected to carbon- or nitrogen-bearing gas at 950-1200°C and pressure under 100 mbar. Parts are held in atmosphere of said gas at pressure lower than 100 mbar and 950-1200°C. If necessary, previous steps are reiterated and parts are cooled down. Device for parts hardening comprises two or more carbonisation chambers, at least one cooling chamber and parts racks transfer system. Said cooling chamber can be coupled with every carbonisation chamber via one or several vacuum valves. Every carbonisation chamber has rack intake element and at least two heaters arranged to direct radiation to part surface at medium spatial angle of 0.5-2 srad. |
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Processing device contains a high pressure vessel having the furnace chamber and a heat exchanger located under it. The furnace chamber contains a heat insulated cover and furnace. Between the housing part and the heat insulated section of the heat insulated cover a guiding pass is formed which is intended for guiding of the working medium under pressure. In the cover the first and the second inlet are provisioned for passing of working medium under pressure in the guiding pass. Meanwhile the second inlet is located under the heat exchanger in a vertical direction and towards the working medium flow under pressure in the guiding pass during the cooling phase, and the first inlet is located above the heat exchanger. |
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Invention relates to a shaft furnace for heat treatment of parts. A furnace includes an external frame, a muffle, which are isolated from each other with fibrous heat insulation, a cover plate, a lifting mechanism, a vessel and electrical equipment. The cover plate is lined with fibrous heat insulation by means of pins and brackets located inside the heat insulation and attached to the upper cover. Fibrous heat insulation of the cover plate is covered with insulation fabric. |
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Method of producing cement with reduction of co2 emission Invention relates to method and device for production of cement clinker. Method includes preliminary heating of raw material powder, containing calcium carbonate, at the stage of preliminary heating by means of waste gases of sintering stage, connected in the direction of gas flow movement, neutralisation of preliminarily heated raw material powder, sintering neutralised raw material powder into cement clinker at the stage of sintering, cooling cement clinker, obtained at the stage of sintering, by means of gas at the stage of cooling, with waste gases from the sintering stage being connected with waste gases from the stage of neutralisation, and connected waste gases are supplied into open gas network (10) with constant or discontinuous separated of part of connected waste gases (32) from open gas network (10), with quantitative part of separated part corresponding to part, newly added into open network (10) as a result of burning and neutralisation. Device for cement clinker production is disclosed. |
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Invention refers to a dental furnace for prosthetic dentures. The furnace comprises a firing chamber, wherein a prosthetic denture can be notably placed, particularly in a muffle between the furnace bottom and top; what is also provided is a temperature sensor connected to a control unit of the dental furnace, arranged outside the firing chamber and having a detection sensor extending outside the firing chamber. The temperature sensor is additionally configured in the form of a proximity sensor; the furnace has particularly at least one auxiliary sensor for detection and identification of an approaching object and/or user of the dental furnace. |
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Holding furnace includes an inductor coil of an electromagnetic mixer of the holding furnace, which has at least two open magnetic conductors, which are located so that their end surfaces are located as close as possible to upper and lower surfaces of molten metal. End surfaces of each magnetic conductor of the inductor coil of the electromagnetic mixer are located in perpendicular planes, either in one plane, or in parallel planes. |
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Clinker cooler contains rotating drum (2) made out of straps and is installed in water bath (1), clinker loading (3) and unloading (4) means. Rotating drum (2) is made of three and more similar perforated straps with rectangular shape, twisted in longitudinal direction along the screw line relatively to the longitudinal axis and bent along screw line in transverse direction on the cylindrical mandrel. Along full length of the rotating drum (2) a coiled spring (7) with flat turn section is installed. |
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Method of obtaining dry zinc white and installation for method realisation Method of obtaining dry zinc white includes zinc evaporation in evaporation furnace at temperature 1200-1350°C and vacuum in the system furnace-exhaust fan 50-100 Pa from the surface of zinc melt 3-5 m2 with thickness of zinc melt 250-350 mm. Removal of zinc vapours from the evaporation zone is realised at the height 450-55 mm from the melt surface. Layer of zinc melt is heated from both sides of furnace due to combustion of natural gas in zones of heating, separated from zinc melt with brickwork of refractory bricks. Zones of heating are divided into 1200-1350 mm long sections. After that, oxidation of zinc vapours in reactor of dry zinc white synthesis is carried out with air oxygen heated to 180-300°C. Air intake is performed from the height of 10-15 m. Mixing of zinc vapours and air is carried out for not less than 2 s in mode of tangential introduction of their flows from the opposite sides of reactor. Obtained aerosol of dry zinc white is transported by whitewash line into section of zinc white and air separation. After that, collection of zinc white in tanks and discharge into packing containers are carried out. |
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Method of heating of long items, such as steel pipes, and powder coating polymerisation in furnace Method involves preliminary furnace heating to a given temperature by heating source, item loading, item heating to required temperature and temperature adjustment, further coating polymerisation with further cooling, where heated gas flow is added from gas turbine motor of gas turbine power plant to flue duct in furnace chambers for item heating and in furnace chambers for applied powder coating polymerisation, direction and volume of heated gas flow proceeding to furnace chambers is adjusted automatically by draught generated by flue duct and gas turbine motor, heated gas flow temperature is adjusted to a given value. In furnace chambers for item heating, heated gas flow is directed along spiral towards external and internal surfaces of rotating item to ensure heat exchange in turbulent flow of heated gas and regular and efficient heating, while in furnace chambers for polymerisation, heated gas flow is directed to walls of furnace chambers. First furnace chamber is pre-heated, a batch of items is loaded and heated to a given temperature in the first furnace chamber, excessive volume is utilised in the second and further furnace chambers for pre-heating, and items are withheld in the first chamber to remove various corroding media that reduce adhesion strength. |
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Device for thermal processing and method of crystalline sorbent formation Invention relates to technology of producing sorbents, immobilised on polymer fibrous carriers, and can be used for thermal and thermochemical processing of sheet materials in different branches of industry. Device for thermal processing of microfibrous matrix contains framework of six box-shaped elements, each of which has internal cavity and is left, right, upper, lower, back and separating sections of framework, in walls of which holes are made. Device is provided with steam generator, circuit of supplying working medium in form of steam, steam-gas mixture or air into working volume and fan for transferring working medium. Separating section is installed in such a way that it divides working volume of device into two separate upper and lower heating chambers. Working volumes of heating chambers and working volumes of said four sections are connected to each other by system of said holes for transfer of working medium in said circuit on working volume of framework sections and working volume of heating chambers. Method of thermal processing of microfibrous matrix includes heating microfibrous matrix, containing on the surface and in its volume preliminarily applied nanosized aluminium-based particles, in wet saturating reactive atmosphere and under conditions of convective heating. Uniform heating and formation in it of crystalline sorbent is provided simultaneously both on the entire surface and in volume of microfibrous matrix. |
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Rotating drum melting furnace for processing of wastes of non-ferrous metals Furnace includes a cylindrical housing, a burner device, a loading opening, a tap hole for pouring out molten metal, a heat insulating layer consisting of three sheets of flexible heat-insulating glass-fibre mullite silica cardboard and a layer of chamotte lightweight, on which a refractory layer of mullite shrink-proof ramming mixture is put; the burner device is made in the form of a four-mixing injection rectangular gas burner, in which two mixers with a perforated hemisphere are arranged in the lower row, and in the upper row there are two mixers with twelve ribs at the end of the mixer on the inner side. The furnace has a turning mechanism of a burner screen, with a possibility of charge loading to the furnace through the opening for the burner at the retracted burner, a drive mechanism for rotation of the furnace relative to the horizontal axis to both sides through an angle of 105, a dust-gas cleaning system containing a mixing chamber, an ID fan, a dust-gas cleaning unit and a cartridge filter. |
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Unit for charge loading into metallurgical furnace Unit includes a movable platform with a technological tare fixed on it and a rotation drive of the movable platform with the technological tare fixed on it; with that, the movable platform is provided with five high-capacity turning wheels with air tyres and steel discs; with that, each wheel is rotated in a ball bearing. On the movable platform there mounted is a device for pushing the charge into the furnace, which consists of a pneumatic cylinder welded to two yokes-posts, which are attached to an upper steel plate of the movable platform with eight nuts and eight spring washers; a stock of the pneumatic cylinder supports and guides a bracket, and the steel plate for pushing the charge from the technological tare into the furnace is fixed on the end of the stock. The unit includes a charge weighing device with a weighing limit of up to 3 tons, a device for loading the charge into the technological tare, which consists of a belt-type conveyor of a chute shape, four hoppers located above the belt-type conveyor and provided with jaw gates, pneumatic vibrators, a yoke and six supports. |
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Shaft-reverberatory furnace for metal remelting Furnace includes a shaft, a melting chamber, a storage bath, which are restricted with bottoms and walls and have two arches, a pouring tap hole, a turning tray, a gas duct and a welded frame. In the shaft and the storage bath there are two working openings and a slag opening in the melting chamber, a device for lifting and lowering a damper of the shaft working opening; two gas burners are installed in the melting chamber and in the storage bath. The furnace has a steel box with heat insulation between it and each wall consisting of three layers of asbestos cardboard plates. Bottoms of the melting chamber and the storage bath are made of KS-90 No. 1 bottom blocks laid onto four layers of asbestos cardboard and a padding from chamotte powder mixed with chips from light-weight bricks. The furnace has a turning lined chute with a turning lined bowl for pouring into pouring equipment located in a service sector with an angle of 140°. Arches above the melting chamber and the storage bath have a heat-insulating coating, and a heat-insulating mullite glass-fibre layer of MLF-260 grade is laid from above them. The furnace is provided with a two-stage dust-gas cleaning system. |
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Hood of open ore-thermal furnace Hood consists of a cover plate, walls of the housing of a smaller diameter and a movable screen of a larger diameter, which are made in the form of a cylinder. On the cover plate there are holes for current leads and charging pipes. In side walls of the hood housing there installed are intake openings of gas ducts, which are located tangentially, and branch pipes for supply of taphole gases. A movable screen is installed with shutoff of a gap between a flange of the furnace and the walls of the hood housing. The intake openings of gas ducts have a rectangular cross section with ratio of sides of 1:2÷1:5, are located tangentially and turned relative to each other through 180° or 120°. |
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Invention relates to ferrous metallurgy, namely to production of agglomerate using an agglomeration machine of a belt type. An agglomerate making device includes a row of heat accumulating sections forming heat reflecting surface above continuously moving agglomerate on the agglomeration belt after agglomerate leaves an ignition hearth. Each section consists of a load-carrying housing and thin-wall shaped tubes put on cross rods and filled with a heat insulator and closed on their faces. Tubes are located along the agglomeration belt. Between walls of the put tubes there formed by means of rings are through gaps, and transverse rods are suspended to the load-carrying housing with a possibility of vertical movement. |
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Method for steel making in electric-arc furnace and electric-arc furnace As per the proposed method, loading of charge consisting of metal scrap and lumped oxide-carbon material is performed to a working space, electric power, fuel, a recarburising agent, flux and gaseous oxygen is supplied; heating and melting of charge is performed with electric arcs with decarburisation of a metal bath, and furnace metal and slag tapping is performed. Before the beginning of the melting process, to the central zone of the furnace, which is adjacent to the combustion zone of electric arcs and restricted with the size of not more than D=(dp+3.5 del), where dp - pitch circle diameter, del - electrode diameter, there loaded simultaneously with the first portion of metal charge is some part of oxide-carbon materials in the amount of 10-90% of their total consumption per melting, and the rest quantity of oxide-carbon materials is added to the molten charge in the melting direction at specific loading rate of 0.5-10 kg/min per 1 MVA of power of the transformer of the electric-arc furnace. Size of lumps of oxide-carbon materials is chosen in the range of 5-80 mm. In the furnace housing walls there are at least three inlet holes of oxide-carbon materials to the central zone of the furnace, which are spaced as to their perimeter and located below the level of the upper elevation of the furnace housing by 0.2-1.0 m. |
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Invention relates to metallurgy, particularly, to design peculiarities of electromagnetic induction crucible melting furnaces. Proposed furnace comprises body, crucible with bath, magnetic core made integral with said body with unlike opposed poles that face said crucible to develop a horizontal magnetic flux, inductor with coils around horizontal part of magnetic core between poles. Note here that said crucible with bath is located between said poles above the inductor. |
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Electromagnetic crucible melting furnace with horizontal magnetic circuit and magnetic flux Invention relates to metallurgy and to foundry production, namely to design features of electromagnetic induction crucible furnaces for melting of cast metals and alloys. A furnace includes a housing, a crucible with a bath, a magnetic circuit with opposite poles, which is made as an integral part of the housing and located horizontally around the crucible, two inductors with coils enveloping the magnetic circuit are installed between the poles at two opposite sides of the crucible and opposite connected; poles of the magnetic circuit, which create horizontal magnetic flux, face to each other and to two other opposite sides of the crucible. The magnetic circuit has an O shape. |
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Direct-flow/counter-flow regeneration furnace for limestone burning, and furnace operation method Invention refers to operation method for direct-flow/counter/flow regeneration furnace for limestone calcination, including at least two wells, each well featuring pre-heating zone, calcination zone and cooling zone, and bypass channel connecting both wells. Method involves use of both wells in turns as calcination well and exhaust well, combustion air and fuel supply to calcination well to form flame of required length, and transfer of hot gas produced in calcination furnace to exhaust well via bypass channel; at least one hot gas parameter characteristic for a given flame length is determined by direct or indirect measurement in the bypass channel area, preferred parameter being the difference of mean hot gas temperature in the bypass channel and mean minimum hot gas temperature in the bypass channel, or NOx content and/or CO content in exhaust gas in the bypass channel, and fuel to combustion air ratio is controlled depending on the parameter to form flame of required length. In addition, invention refers to direct-flow/counter-flow regeneration furnace for limestone calcination. |
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Invention refers to continuous operation furnace for ceramics baking and to ceramics baking method. Furnace features a channel with at least one side wall, conveyor for ceramics feed to the channel, and several baking units aligned in series along the channel and equipped with at least one burner, burner exhaust gas output device positioned so that exhaust gas flow is transverse to ceramics movement in the channel, at least one pressure gauge inside the channel and burning medium feed device connected to the pressure gauge to control feed to the burner, burning controls regulated by pressure detected by the pressure gauge. Method involves stage of pressure adjustment in each baking unit when burning medium supply to each burner is adjusted as a function of baking unit pressure detected by the pressure gauge. |
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Metallurgic furnace cooling method Metallurgic furnace cooling method is implemented by a cooling element of a closed cooling system with cooling medium being passed through the element and containing at least one ionic liquid, preferably, consisting of ionic liquid. The closed cooling system comprises the cooling element, supply and withdrawal units for the cooling medium, a heat exchanger, a circulation pump and a collecting tank for the cooling medium with the ionic liquid. |
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Furnace for dry mineralisation of solid organic material Furnace for dry mineralisation of solid organic material comprises a lined casing of a drum rotating in the supports with a roller into which a bar-pipeline fitted by burners-plasmotrons to supply electric energy and plasma forming gas, carbon dioxide is introduced through the lower sealing unit and the upper sealing unit, a lock device with a conveyor to unload ash, a lock device with a conveyor to load the material into furnace, an exhaust system for additional gas catching, a pipeline to remove gaseous reaction products. The upper part of the drum can be provided with a sealable hole for material loading, the lower part of the drum can be provided with a sealable hole for solid product unloading. |
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Production of cement clinker and plant to this end Set of inventions relates to production of clinker cement. Proposed method comprises steps whereat first and second stock portions 6, 7 are heated, calcium carbonate making the main component in first and second cyclone heaters 5 and 7, respectively. First and second heated stock parts 41, 61 are pre-annealed with gas application 9 for fuel combustion in reactor 1 with fluidised bed 13. Flow of fumes 8 produced by reactor 1 without backflow to reactor 1 is directed into second cyclone reactor 7. Annealed stock is roasted to obtain clinker in rotary furnace 2. Fumes 18 produced by rotary furnace 2 are directed into first cyclone heater 5. Clinker obtained in cooler 3 is cooled at forcing of cooling gas via clinker at the level of rotary furnace outlet. Fluidising gas represents gas 8 with content of oxygen of 90-100 % and low rate lower than 2 m/s. |
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Rotary kiln for production of cement clinker Invention relates to cement industry. This kiln comprises body, dual drive, slime feed pipe, head to feed fuel and air into kiln, iterative filter-heater, heat exchangers, fire grate-displacing refrigerator, water cooling unit and central lubing system. Body perimeter is composed by multistart helical surface of three or more identical rectangular strips twisted in lengthwise direction relative to lengthwise axis and bent in helical line in crosswise direction at cylindrical mandrel. Sais strips are connected to make three or more helical grooves shaped to curved pockets with centre of curvature inside cross-section of said body and lap joints there inside as screw blades over the entire length of the body from inlet to outlet. |
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Invention relates to metallurgy and foundry, in particular, to design features of electromagnetic crucible melting furnaces for melting of casting metals and alloys. The furnace comprises a housing, a crucible with a bath, an inductor coil with turns, a C-shaped magnetic conductor is made solid with the housing, its unlike poles are turned to each other to generate a horizontal magnetic flux, the inductor coil turns are able of embracing the central magnetic conductor part between its poles, and the crucible with the bath is installed between the poles aside the inductor coil. |
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Method of induction crucible melting by horizontal magnetic flux Invention relates to metallurgy and foundry, in particular, to the methods for melting of casting metals and alloys in electromagnetic induction crucible furnaces. The method involves loading of a charge to a crucible, exposure of the charge to the operating magnetic flux for its heating by eddy induction currents and for melting, discharge of the melt from the crucible. The charge is affected on at least two opposite lateral sides of the crucible by the horizontal magnetic flux produced by the inductor coil with turns embracing the central part of the bent magnetic conductor with two vertical poles. |
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Method and installation for cement clinker production In method of cement clinker production cement raw material powder in accordance with invention is preliminarily heated in heater, preliminarily heated cement raw material powder is preliminarily calcinated in calciner, and preliminarily calcinated cement raw material powder is kilned in furnace, with fuel and air used for burning in calciner having oxygen content, at least 75 mol.%, and cement raw material powder is preliminarily calcinated in fluidised bed in calciner. Discharged gases, formed in furnace, are supplied into heater bypassing calciner - into device for preliminarily CO2 processing. Device of method realisation contains: heater for preliminary heating of cement raw material powder, at least, one, made in form of fluidised bed reactor calciner for preliminary calcination of preliminarily heated cement raw material powder, which has porous or perforated flown through bottom, means for fuel supply and means for air supply for burning with oxygen content, at least, 75 mol.%, as well as for supply of preliminarily heated cement raw material powder, with calcinatory having means for discharge of preliminarily calcinated cement raw material powder, installed below the point of fluid bed extension and connection with furnace, and calcinatory being connected with device for preliminary CO2 processing for CO2 separation, furnace for kilning preliminarily calcinated cement raw material powder, containing line for furnace discharged gas, connected with heater bypassing calciner. Invention is developed in dependent items of the invention formula. |
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Invention relates to a method of cast-iron manufacture using oxygen and hydrogen-rich gas. According to the method, direct transfer of high-temperature coke, hot agglomerate and hot pellets to a furnace for cast-iron manufacture, and blowing of oxygen and hydrogen-rich combustible gas of the specified temperature to the furnace by means of oxygen and gas tuyeres located in the furnace is performed. The invention also relates to a device for cast-iron manufacture using oxygen and hydrogen-rich gas, which includes a system of raw materials, a gas system of a furnace arch, a coke gas blowing system, a dust blowing system, a system of dry slag granulation and recovery of residual heat and an oxygen system. |
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Reverberatory furnace for aluminium scrap remelting Invention relates to a reverberatory furnace for aluminium scrap remelting. A furnace includes a housing formed with refractory external side, front and rear end walls, a storage bath and an inclined platform, which are restricted with a bottom and walls, an arch, a drainage tap-hole, a gas duct and a weld steel casing consisting of a lower part and two upper parts fixed on the lower part and located above the bottom and the inclined platform. The furnace housing is arranged inside the steel casing; besides, the furnace has a turning mechanism and is supported from a steel base. The storage bath and the inclined platform are made from mullite-corundum blocks of MKS-72 grade, which are laid onto a heat-insulating glass-fibre mullite-silica cardboard and light-weight fire-clay brick of ShL-0.4 grade. The steel casing has heat insulation between it and each wall, which consists of a triple heat-insulating glass-fibre mullite-silica cardboard, and the triple heat-insulating fibre-glass mullite-silica cardboard and heat-insulating mats arranged from above the arch. The furnace is provided in one of its side walls with two injection fifteen-mixing burners of intermediate pressure, which are directed at an angle to the inclined platform; the other side wall is provided with one injection fifteen-mixing burner; the arch is provided with two seventeen-mixing burners, which are directed at an angle to the bottom; operating and slag openings equipped with hydraulic actuators for lifting and lowering of dampers, and a three-stage dust-and-gas cleaning unit consisting of a mixing chamber, an induced draft fan, a gas cleaning block, a rough dust cleaning cyclone, and a cartridge filter for fine dust cleaning. |
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Furnace for preparation of cement clinker Furnace for preparation of cement clinker contains the housing resting through bindings on bearing rollers, a double drive consisting of two electric motors and two reducers, two under-ring gear wheels, one ring wheel, feed pipe for supply of slime for kilning of cement clinker, head for fuel and air feeding into the furnace, chain filter - heater, heat exchangers, shearing grate refrigerator, unit for water cooling and central greasing system. The housing is installed horizontally and manufactured from guiding elements as three or more strips twisted along circular helix in a longitudinal direction with reference to direct-axis, and curved along a circular helix in a transversal direction on a mandrel with the shape of paraboloid of rotation. The strips are made with side edges having convex curvilinear shape and are connected with forming of the hollow conical housing with lappings along the whole length inside the housing as screw vanes. |
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Conveyor machine for agglomeration of the batch layer with height more than 200 mm contains between the igniting and unloading units at least two axles in the machine shelter or at least two stands with an axle. Each axle has the plate-fixed device for feeding of water and gas-air mixture into the agglomerated batch layer with a possibility of its rejection and return into initial position. And the axles are made with the possibility of movement and placement of the first of axles at the distance from the ignition furnace of the machine ensuring the stable feeding of gas-air mixture into the batch layer without its ignition from the surface of agglomerated layer at the agglomeration temperature optimum for mix material in the layer, and placement of the subsequent axles along the length of the machine with a possibility of maintaining of optimum temperature in the agglomerated layer from the first axle to the unloading unit of the machine. |
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Reverberatory furnace for remelting of aluminium scrap Furnace consists of a case made with refractory external side, front and back end walls, a storage bath and an inclined platform restricted with a sole and walls, two drain tapholes, a rotating pan, a gas duct and a welded frame whereon everything is arranged. The furnace case is fitted by a welded steel box equipped with heat insulation between the box and each wall consisting of double heat insulation mullite fibreglass layer and of sheet asbestos cardboard. The storage bath and the inclined platform are made from mullite corundum blocks of increased density which are laid on the heat insulation mullite fibreglass layer and light brick. The furnace case is filled by concrete with the filler from crushed light fire brick, the crown above the inclined platform and the bath has heat-insulation plaster above which double layer of refractory heat-insulation mats is laid. One side wall of the furnace is provided with two injection ten-mixer medium-pressure burners directed at an angle to the inclined platform while another side wall is furnished with one injection ten-mixer burner directed at an angle to the inclined platform and one 19-mixer burner directed to the furnace bottom, a reheat chamber lined by refractory bricks to house a four-mixer gas injection burner, an air blower, two tapholes in the side walls to let out the molten metal made in the quick-change taphole bricks. |
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Device and method for feed of metals into smelting plant Invention relates to metallurgy, particularly, to devices for metal feed into smelting plant. Proposed device comprises means to load metal, their end being coupled with connection conveyor. The latter is loading platform to interact with transfer and position means. Note here that said connection conveyor can occupy at least first position ay, at least continuous metal loading into furnace. Whereat at least front end of said conveyor is, in fact, level with furnace inner wall to extend through said opening to feed metal into furnace. Second position remote from furnace wall is used at the stage of liquid metal tapping from the furnace. Besides, said conveyor has third position used at the stage of loading of material first charge into furnace when the latter is in OFF. At said position, loading platform front end is located inside the furnace, nearby far inner wall of the furnace. Said far wall is opposite the inner wall to discharge and to distribute definite amount of said first charge to cover at least the furnace bottom part with material. Said conveyor allows discharge of metal of said first charge at adjusted amounts and at positions from front end of loading platform in one of two directions sideways or downward from loading platform which allows its selective opening. |
Another patent 2551021.