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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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Invention relates to ferrous metallurgy, namely to steel making in electric arc furnaces. The metal scrap heating method for steel making in arc furnaces includes the use of a scrap heating chamber with a gas return circuit, gases are withdrawn from the top part of the chamber by means of recirculation smoke exhauster, and a part of return gases by means of the smoke exhauster of flue gases are supplied to a chimney and discharged into atmosphere. The method provides preparation of heat carrier in the heat generator by burning of natural gas with oxidiser which is obtained by mixing of part of return gases with oxygen, adding of the heat carrier together with another part of return gases into the bottom part of the scrap heating chamber, and also withdrawal from the output of the heat generator of a part of gases of the heat carrier where their temperature is sufficient for decomposition of dioxine, with their subsequent holding at this temperature, cooling by injected water down to the temperature excluding repeated synthesis of dioxine, and supply of the cooled heat carrier gases into the flue gas path with ensuring heat exchange with oxygen which is supplied for obtaining of the named oxidiser. |
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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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Gas cleaning system for metallurgic plant and waste gas cleaning method Invention is related to a gas cleaning system, waste gas cleaning method and a metallurgic plant containing the above system. The gas cleaning system comprises at least one gas cleaning unit, a device for streaming waste gas subjected to cleaning through a gas cleaning unit, a heat exchanger for cooling of the waste gas and generating heated fluid, a secondary heat exchanger for generating the heated fluid by cooling of the heated fluid and driven by the heated fluid and intended for the receipt of the heated fluid received in the heat exchanger for cooling of the waste gas and actuation of the device for streaming the waste gas. |
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Device for heating of forging presses and methods of application Invention relates to metal forming and may be used in forging machine. Forging press heater (420) comprises burner head (422) with multiple flame holes (426). Burner head (422) is directed to follow the direction of at least one forging press working zone. Said head can intake and burn the fed oxidising gas and fuel to obtain flame jet nearby flame holes. Burner part (432) can displace relative to burner part (432') to align, at least partially, at least one first flame hole with first forging zone of the press. |
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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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Vessel for melted metal having movable cover Invention relates to metallurgy. Vessel with open top and internal volume for melted metal contains a cover with bottom looking towards the internal volume of the vessel. The cover is secured to at least one elongated lifting lever and to at least one elongated rotating lever. The lifting lever ensures the cover movement from closed position to the opened position and back. The rotating lever ensures the cover rotation control during movement from opened to closed position and back. At least one of the specified levers ensures force, at least partially compensating the cover weight. |
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Vessel for melted metal having cross ventilation Invention relates to metallurgy, particularly to the vessel for melted metal storage. The melted metal vessel is made fireproof and has outside surface and metal enclosure containing internal surface partially enclosing the vessel outside surface at distance from it and creating space between the vessel and metal enclosure. This space includes free, going upwards gap, that is completely connected with the outside atmosphere due to top and bottom holes in the metal enclosure. In space between the internal surface of the metal enclosure and outside surface of the fireproof vessel the insulating material layer is arranged, at that the insulating material layer is more narrow then specified space, at least at going upward sides of the metal enclosure; due to this in the space the specified free gap is arranged. The tray for melted metal delivery, channel for metal filter installation or crucible can be used s fireproof vessel. |
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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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Device comprises a unit to collect volcanic gas, a gas flue, a set of adsorbers, a system for adsorber washing and a set of electric filters, the device is equipped by a vertical aerodynamic tunnel from durable heat-resistant and acid resistant polymer film reinforced by polymer hoops which is attached to a balloon by automatic tension devices, the adsorbers and electric filters are mounted in the tunnel, it also comprises a wind mill, with its wind wheel being set in the above aerodynamic tunnel and providing for the air draft sufficient to drive the volcanic gas through adsorbers and to rotate the wind wheel in constant air flow due to the difference of the atmospheric pressure and the temperature gradient at the ends of the aerodynamic tunnel, a volcanic gas cooling unit made as a water cooling system for the gas comprising nozzles and membrane and mounted in the gas flue, a tank to collect lean rhenium solution and an ion-exchange column. The volcanic gas collection unit is made as a dome for gas collection which comprises extension-type branch pipes and a safety valve, is connected to the aerodynamic tunnel by the gas flue, made from durable heat-resistant polymer film and suspended under the balloon by ropes. |
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Oil coke upgrading method and gas refrigerator for coke cooling Inventions can be used in oil-processing and coke-chemical industry. Oil coke is calcinated and then cooled in two stages. At the first stage coke is cooled down to the temperature 1000°C in the gas refrigerator at direct contact of hydrocarbon gas with the cooling coke. At the second stage coke is cooled in a water refrigerator down to the temperature 100°C. The gas refrigerator for coke cooling contains a rotating cylindrical drum of the type "pipe in pipe" with the internal pipe (13) perforated with longitudinal cracks (16) and with tubular annulus divided into sections by longitudinal partitions (14) inside which cooling hydrocarbon gas contacting directly with cooled coke through longitudinal cracks (16) is supplied. |
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Inventions may be used in coke industry. The coke furnace crossover includes the first row (4-5) having the first blocks (48) and the second row (6-7) having the first blocks (50i). Each of the first blocks (48) has the first horizontal aperture (72) continuing through the first block from the front surface up to the rear surface and the second vertical aperture (74) formed through the upper surface of the block continuing into the first horizontal aperture (72). The first blocks (48) are placed at flat surface combining the corresponding first horizontal apertures (72) so that the first horizontal channel (32) is formed. Each of the second blocks (50i) includes the third vertical aperture (80) continuing through the second block (50i) from the upper surface up to the lower surface. The second blocks (50i) are placed over the first row (4-5) of the first blocks (48) to match the third vertical aperture (80) of each of the second blocks (50i) with the second vertical aperture (74) of the first block so that the second vertical channel (30) is formed. |
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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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Refractory heat insulating block Refractory heat insulating block contains four-layer package having rectangular shape. The package contains layers arranged in sequence, from them the first layer is outside one looking to the furnace centre upon the block installation on furnace wall, it is made out of the materials with apparent density 290÷500 kg/m3, second and third layers are middle ones, the forth layer in internal looking on the furnace wall upon the block installation on this wall, at that specified layers are made out of the material with apparent density 290÷400 kg/m3. The layers are refractory heat insulating plates, glued to each other using the high-temperature adhesive. On the outside surface of the forth layer the metal washers with holes are installed. The washers are secured to the forth layer of the package by the metal clamps located in this layer. In the package the through holes co-axial to the specified washers are made. At that hole diameter exceeds the washer hole diameter. |
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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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Fire-resistant lining for titanium ore dressing Invention relates to layered fire-resistant furnace lining, used in the process of titanium ore dressing with formation of enriched with titanium oxide and iron oxide liquid slag, to degradation-resistant substance in presence of enriched with titanium oxide and iron oxide liquid slag, to method of obtaining thereof, and to preliminarily formed layered fire-resistant lining. Layered fire-resistant lining contains first layer, which contains alumina and zirconium dioxide, including approximately 90-99 wt % of alumina and approximately 1-10 wt % of zirconium dioxide of the total weight of the first layer, and the second layer, containing degradation-resistant substance in presence of enriched with titanium oxide and iron oxide liquid slag. The second layer is located between slag and the first layer, and the total content of calcium oxide, magnesium oxide, yttrium oxide and cerium oxide constitutes less than 1 wt % of the total weight of the fire-resistant mass. |
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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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Slab and brick assembly and method of its formation Invention relates to production and laying of bricks. A slab/brick assembly, which includes: a slab (12) with multiple ribs (32) and multiple channels (37), on the front surface of which there is the first hole of each channel; and multiple bricks (18), besides, each brick is inserted into multiple channels (37) via the first hole into the position, which is achieved due to rotation of the brick partially installed into the channel so that one or more parts of the brick at least partially enters in contact with one or more surfaces of the channel and/or the first of multiple ribs, and in which the brick is blocked against fallout from the channel via the first hole as a result of linear motion without rotation. |
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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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Air diffuser for primary air in coke ovens Invention relates to devices for directional intake of primary air in the coking chamber of the coke oven, and can be used in the chemical industry. The feeding device of primary air for combustion of coke gas comprises inlet openings 6 in the roof or the wall of the coke oven chamber 5 above the door 11 of the chamber 5, or in the door 11 of the chamber 5, frontally closing the gas space located above the coke cake in each coke oven chamber 5. Primary air is fed through the inlet openings 6 into the space located above the coke cake and filled with coke gas. In at least one of the inlet openings 6 the nozzle is mounted having the nozzles on the side facing inward of the furnace, having with a vertically extending perpendicular to the roof or the side wall of the chamber 5, or the side door 11 of the coke oven chamber 5 directed outward the opening 6 the angle greater than 0°. |
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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. |
Another patent 2550900.