Melting furnace |
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IPC classes for russian patent Melting furnace (RU 2399003):
 Procedure for refinement of zinc containing raw material from impurity metal oxides and impurity metals; furnace for implementation of this procedure / 2389809
Procedure consists in charging zinc containing raw material together with additive of metal aluminium at amount of 0.02-0.05 % of weight of zinc containing raw material into stand of salts melt of composition wt %: NaCl - 56-59, NaF - 22-23, KCl - 11, Na2B4O7 - 4-6, B2O3 - 3-5 at temperature 600-700°C. The furnace consists of a shell made out of refractory steel. A ceramic branch is used for draining refined melt of zinc into pans. The ceramic branch is also used for emptying the furnace of zinc and salts melt during maintenance repairs and emergencies. The bottom of the furnace is lined with refractory non-metallic materials. The shell of a crucible on internal surface is also lined with refractory non-metallic materials at height from the bottom of the furnace up to 500-600 mm; a layer of refractory glue is applied at the joint point of refractory non-metallic lining with internal surface of the shell.
 Duplex-furnace for smelting of manganese alloys from ferrimanganese bases and concentrates and anthropogenic wastes of metallurgy / 2380633
In arch of siphon there are implemented openings or windows for loading of carbon-bearing materials, partition with bottom window or windows for flow of melted slag into siphon is implemented in the form of common end wall for liquid-phase smelting shaft and siphon with electrode(s) and allows window or windows for fume extraction from under arch of siphon, located on level not higher than horizontal axis of top row of tuyeres of liquid-phase smelting shaft, siphon is outfitted by solid transverse partition, installed in its bottom part parallel to common end wall for liquid-phase smelting shaft and siphon at a distance enough for flow of required volume of slag melt from liquid-phase smelting shaft on surface of heated layer of carbon-bearing material, herewith solid transverse partition fully separates siphon from liquid-phase smelting shaft, and its top edge is located higher than horizontal axis of bottom row of tuyeres of liquid-phase smelting shaft.
 Device for gas-thermal oxidation of objects made from titanium and titanium-containing alloys / 2369663
Invention relates to equipment for passivation of metal surfaces, more specifically to devices for gas-thermal oxidation of objects made from titanium and titanium-containing alloys. The device has an oxidation chamber, fitted with a cooling system and a heating system, a unit for feeding gaseous mixture into the oxidation chamber, a unit for outlet of gaseous mixture from the chamber, a chamber for cooling oxidised objects, which has a unit for flowing cooling inert gas medium in and out. The cooling chamber is joined to the oxidation chamber through a rotary valve, made with two hemispherical gates, which can open and close the opening in the rotary valve for joining or separating both chambers.
 Control method of level of top surface of slaggy phase and boundary of slaggy and metallic phase of melt in lift tube tank of iron-and-steel furnace by vanukov or romelt / 2368853
Invention relates to non-ferrous metallurgy field. According to method it is implemented voltage feeding to electroconductive refractory rods, used for slag heating and setting adjusting of current value. It is displaced rod and implemented continuous measurement and comparison of current value through rod with setting. At equality of measured value of current to setting value it is fixed top surface of slaggy or metallic phase of melt in tank of iron-and-steel furnace. In the capacity of electroconductive refractory rod it is used graphitic rod or electrode, used for electroarc heating of melt in tank of iron-and-steel furnace. After achievement of equality of current setting to corresponding measured current values it is checked equality to zero of the first current derivative.
 Plant for object survey under high temperatures / 2367934
Invention is related to testing of objects, comprising explosive and toxic substances, for various thermal effects. Plant comprises working chamber with loading window arranged with the possibility of its overlapping, the following components installed inside chamber - device for fixation of object and at least one fuel header with vortex nozzles, device for fuel supply, tube connected with its one end to fuel supply device, and with the other end - to header, ignition device, additionally, at least one tray installed under header, and at least one pair of additional devices for fuel supply and ignition, every of which is installed at a preset distance from working chamber and is connected accordingly by the first and second additional tubes to tray. On the second additional pipe, upstream ignition device, pipe cooling device is installed.
 Dehydration method of carnallite raw materials and device for its implementation / 2359911
Group of invention relates to non-ferrous metallurgy, particularly to method and device for preparation of carnallite raw materials to the process of electrolytic magnesium recieving. According to the method carnallite raw materials are loaded and dehydrated in the furnace by fuel gas, dehydrated carnallite is separated in dust cyclone from withdrawn gas and fed into the melting cyclone, where it is heated by fuel gas, received in burner by means of chlorine burning in natural gas, it is melted and heated up to the temperature 700-800°C. After overheating mixture of fuel gas and molten waterless carnallite is fed simultaneously in the melt collector, where gas is separated from the melt by means of collision with partition and fed into the furnace to dehydration stage, and waterless carnallite is discharged. Unit includes furnace with nozzles for loading of raw materials and gas mixture withdrawal with waterless carnallite, with nozzle for feeding of fuel gas, dust cyclone, connected to the furnace by gas pipe, melting cyclone, connected by pipeline to dust cyclone and melt pipe with melt collecto, outfitted by burner for burning of chlorine, collector of the melt with discharge nozzle for melt. It is also outfitted by gas flue, connecting melt collector with furnace and outfitted by device for gas feeding additionally melt collector is implemented in the form of tank with partition and outfitted by additional nozzle, connected to gas pipe.
 Assemble for reprocessing of powdered lead- and zinc-containing raw materials / 2359188
Invention relates to ferrous metallurgy, mainly to devices for reprocessing of powdered lead- and zinc-containing raw materials, in which there can be copper and precious metals. Aggregate for reprocessing of powdered lead- and zinc-containing raw materials contains rectangular upright smelting chamber with burner facility, gas cooler stack, partition with water-cooled copper elements, separating smelting chamber from gas cooler stack, electric furnace, separated from the smelting chamber by partition with water-cooled copper elements, coffer chord, facilities for discharge of smelting products, bottom, herewith correlation of difference of level of bottom edges to distance from the smelting chamber crown to bottom edge of partition, separating electric furnace from the smelting chamber, is 0.15-0.29, and relation of distance from bottom edge of this partition up to bottom to difference of level of bottom edges is 1.25-2.10. On walls of gas cooler stack of aggregate there are installed not more than two tuyers on the level of bottom edge of partition, separating gas cooler stack from smelting chamber, with inclination into the side of bottom on-the-mitre to horizontal plane, specified by formula α=arctg(k-ΔH/B), where α - angle of tuyers slope; k - coefficient of angle of tuyers slope, equal to 1.11-1.25; ΔH - difference of level of bottom edges of partitions; B - inside width of gas cooler stack. At mounting of two tuyers they are located by one on each of opposite side walls of gas cooler stack with reflector displacement relative to its cross-axial section. Additionally each of it is located at a distance of cross-axial section of gas cooler stack, relation of which to inside length of gas cooler stack is 0.25-0.30.
 Liquid-phase furnace for smelting materials containing ferrous and nonferrous metals / 2348881
Invention relates to metallurgy and, particularly, to the plants for continuous processing of oxidised nickel-containing ores, slag and dust. The liquid-phase furnace includes rectangular caisson-type well with lined walls being situated underneath. The well expands in the upper part. It is provided with top and bottom tuyeres. The well is separated into smelting and recovery chambers by a transverse partition. The chambers are interconnected through the window for smelt cross-flowing in the lower part of the transverse partition. The furnace also includes staggered or tilted hearth, slug discharge trap and electrodes being merged into the smelt. The electrodes are installed in slug release trap with their heat-generating ends being placed on the border of slug phase and metal phase separation in the trap. Besides, the trap volume is more than 10 times less than the recovery chamber volume.
 Furnace of magnesium continuous refinement / 2348715
Invention concerns devices for refinement of magnesium. Furnace of magnesium continuous refinement with salt heating includes lined cylindrical casing installed inside on supports alloying basket with central vertical channel, crown, introduced through side wall lower than alloying basket electrodes and bottom with bevels. At that distance from bottom till electrodes is 200-300 mm, and distance from electrodes till alloying basket is 1.0-2.0 of electrodes height. Electrodes are located symmetrical relative to vertical axes of furnace and relative to each other. In crown above electrodes there are implemented manholes with covers. Supports of alloying basket bear on electro- insulating supports or gaskets, and top edge of electrodes is implemented as bevel. Diameter of bottom horizontal part is 0.5-0.95 of distance between diametrical electrodes.
 Method of treatment hard gold-arsenical ores and concentrates and furnace for its implementation / 2348713
Invention concerns treatment of hard gold-arsenic ores. Particularly it concerns antimonous sulphide ores and concentrates. Method includes without oxidising melting in smelting chamber with receiving of matte and slag melts and treatment of melting products by metallic phase. At that without oxidising melting is implemented continuously in circulating melted slag with out of melting products into settling chamber to interphase boundary slag - matte. Before melting circulating melted slag is separated from operating gases. For circulating it is used maximum separated from matte slag. Treatment of matte by metallic phase is implemented in continuous operation. Furnace for processing of hard gold -arsenic ores and concentrates includes smelting chamber. Furthermore, it is outfitted by recycling contour, containing of gas-lift unit with tuyeres and descending and ascending channels of melted slag, gas separating and settling chambers. Gas separating chamber is communicated with smelting chamber through bleed blowhole by means of channel for separation of working gas of gas-lift unit and gas separating chamber from circulating melted slag. Smelting chamber immersed into settling chamber to interphase boundary slag - matte. Settling chamber contains gas flue for withdrawal of sublimates and low blowing melting products.
 Furnace with inner heaters / 2246086
The melting cavity with heaters located in it, the heaters pass outside through the brickwork, where they are cooled for production of the conditions of melt crystallization inside the brickwork thus providing the furnace leak-proofness, the minimum thickness of the brickwork is determined by an empirical relation: dmin=a+b(Tf-Tmelt)/Tmeit+C[Theat/Tmelt-Theat)]2, where: dmin- the minimum wall thickness; Tf - the temperature of metal inside the furnace; Tmelt- the metal melting point; Theat- the temperature of the outside end faces of heaters; a, b, c - empirical coefficients equal to 10, 25 and 2,2 cm respectively.
 Method of purification of zinc from oxides of foreign metals and furnace for realization of this method / 2261925
Proposed method includes loading zinc into cages in sodium tetraborate melt containing 3-7 mass-% of boric acid anhydride at temperature of 750-800°C. Furnace used for purification of zinc is provided with pot for melt for avoidance of pouring of sodium tetraborate melt. Said pot is provided with branch pipe for pouring purified zinc melt into ingot molds. Proposed method may be performed in continuous mode. Production of zinc is increased not below 99.55%.
 Method for pyrometallurgical processing of non-ferrous ores and concentrates for producing of matte or metal and flow line for performing the same / 2267545
Method involves melting with the use of oxygen-containing blast gas; converting; depleting slag in gasifier; reducing gases from melting process and converting with hot gases from gasifier. Oxygen-containing blast gas used is exhaust gas of energetic gas turbine unit operating on natural gas or gas generating gas from coal gasification. Gas used for gas turbine unit is gas generating gas from bath coal gasification produced on slag depletion. Flow line has melting bubbling furnace, converter, gasifier for slag depletion, gas turbine unit with system of gas discharge channel connected through branches with tuyeres of melting furnace, converter and gasifier. Each of said branches is equipped with pressure regulator and flow regulator.
 Device for refining magnesium and preparation of magnesium alloys / 2273673
Device refining magnesium and preparation of magnesium alloys includes furnace made in form of shaft with casing lined with heat-insulating and refractory layers, heaters, crucible with flange, bearing ring and cover; refractory layer consists of several detachable cylindrical blocks in height of furnace shaft interconnected by means of tenon-slot joints and provided with projection on outer side and slot on inner side. Detachable block is solid in form and is assembled from half-rings which are interconnected by means of slot-to-slot joints and are secured by mortar. Block is made from high-strength chemically and thermally stable refractory material, for example concrete claydite or fluorine phlogopipe. Heat-insulating layer is made from basalt slabs. Ratio of refractory and heat-insulating layers is equal to 1:1.5. Zigzag heaters are secured on refractory block over entire height of furnace shaft.
 Method and device for processing raw lead material / 2283359
Proposed method includes treatment of entire volume of slag melt with oxygen-containing blast in zone of delivery of blast to melt at rate of 500-1500 nm3/h per m3 of slag; oxygen-containing blast is simultaneously delivered to slag melt at level above metallic lead surface of 5 to 20 calibers of lance and above slag melt of 30-80 calibers of lance assuming smooth surface of slag; metallic lead temperature is maintained within 700-1100°C and that of slag within 900-1300°C. For realization of this method, use is made of furnace whose crucible hearth located vertically in calibers of lance of lower row relative to horizontal plane of lances below by 10-30 calibers under furnace shaft and slag siphon channel hang-up by 2-10 calibers, pouring port lip is located above by 10-20 calibers and by 30-100 calibers of upper row lances; lead siphon hang-up is located below hearth level by 2-5 calibers.
 Magnesium refining furnace / 2283886
Proposed furnace has casing and lined shaft with hearth and electrodes which is closed by roof, branch pipes for loading molten salts and magnesium and discharging magnesium. Casing is conical over entire height with lesser base directed towards furnace hearth at ratio of lower base to upper part of furnace equal to 1: (1.75-1.85). Furnace is provided with detachable bearing plate whose area is equal to area of hearth; central shaft is tightly secured in furnace roof and is mounted on bearing plate; it is made from detachable side-beams; lower side-beam has openings opposite electrodes. Besides that, side-beams of central shaft are interconnected by tenon-and-mortise joints; branch pipes for loading and unloading magnesium are mounted on furnace roof at different sides, central shaft is tightly closed at the top by means of cover provided with branch pipe for loading salt. Side-beams of central shaft are made from cast-iron or steel casting; upper edge of opening of furnace central shaft is located above upper edge of electrode end face; ratio of height of opening of lower side-beam of central part of furnace to its total height is equal to 1: (2.5-3.0).
 Furnace for processing oxidized ore materials containing nickel, cobalt, iron / 2315934
Furnace includes caisson shaft divided by means of vertical cross partition by melting and reducing chambers provided with tuyeres; united stepped along chambers hearth; siphon with over-flow duct and with openings for discharging slag and metal-containing melt. Vertical cross partition dividing chambers is mounted fluid-tightly in hearth of melting chamber and it has height equal to 35 - 55 diameters of tuyeres of melting chamber over plane of their arranging. Hearth of reducing chamber is inclined by angle 25 - 60° to horizon from vertical cross partition towards over-flow duct.
 Gypsum drying and/or burning plant / 2316517
Method involves supplying hot gases to inlet of the first channel; delivering gypsum to inlet of the second channel, which is concentric to the first one; moving gypsum in the second channel by supply screw; providing indirect heat-exchange between gypsum and hot gases; burning gypsum to obtain semihydrate gypsum. Gypsum movement and indirect heat-exchange stages include drying and partial burning gypsum to create semihydrate gypsum. Gypsum burning at the last stage is terminated in bringing gypsum into contact with hot gases. The last burning operation is of pulsed type. Gypsum movement and heat-exchanging stages continue for 30 sec-5 min. Gypsum burning by hot gases is carried out for 1-10 sec. Device for described method realization and ready product are also disclosed.
 Method for producing small-size cast pieces of high-active metals and alloys and plant for performing the same / 2319578
Apparatus includes melting and pouring chamber where non-consumable electrode and crucible of graphite are arranged. Inner surface of crucible is covered with refractory tungsten non-interacting with melt. Apparatus for tilting crucible includes carcass having two mutually parallel vertical grooves. In mutually opposite grooves rollers are arranged with possibility of limited motion. Said rollers are secured to ends of levers through hinges joined with crucible. Carcass includes movable support for crucible secured to wall of carcass. Said support may be moved in horizontal plane. In order to set designed gap, crucible and apparatus for tilting it are moved upwards till contact of billet with end of electrode; then movable support of crucible is introduced and crucible is moved downwards till support. After melting billet said support is withdrawn. Crucible falls down and tilts along path providing motion of point of crucible inner surface at side of draining mostly spaced from axis of crucible in tilting plane along vertical line.
 Method and device for compaction of porous substrate by the gaseous phase chemical infiltration / 2319682
Invention is pertaining to the field of compaction of porous substrates by- the gaseous phase chemical infiltration. Exercise loading of substrates exposed to compaction- into the furnace loading area; heat up substrates in the furnace up to their temperature, at which the required substance of the mold will be formed from the gaseous source or sources contained in the gas-reactant. Then- on the one hand of the furnace inject gas-reagent and heat it up after injection- during its transit in the furnace through the gas heating area located- in the direction of the gas-reagent travel through the furnace in front of the loading area. Gas-reactant is exposed to preheating before its injection in the furnace for reaching prior its injection in the furnace of the temperature intermediate -between the environment temperature and the substrates preheating temperature. Installation includes the furnace, the area of substrates loading in the furnace, the means of heating of substrates in the loading area, at least, one hole for the gas-reagent injection in the furnace and, at least, one heating area of the gas-reagent disposed in the furnace between the hole of the gas-reagent injection and the loading area. Installation also contains, at least, one gas preheating device disposed out of the furnace and connected, at least, with one hole used for injection of the gas-reagentin the furnace and ensuring- preliminary heating up of the gas-reagent before its injection in the furnace. The presented method and the device allow to reduce significantly the temperature gradient in the whole area of loading without usage of the large the volume of the gas-reagent heating area.
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FIELD: metallurgy. SUBSTANCE: furnace consists of case with installed therein melting section equipped with facility for charge supply and burner and electro-thermal section divided from melting section with partition not reaching hearth; also melting section is equipped with electrodes, electric holders, devices for metal and slag tapping and with gas duct. A lower edge of the partition is positioned above the level of the slag tapping device thereby forming a gas-overflow port of alternate cross section with the level of melt. The metal tapping device is equipped with a well communicated with an overflow zone of the partition via a channel. Section of the port is chosen according to specified ratio of furnace width to inter-axis distance between electrodes. The charge supply facility has a chute superposed on a stepped hearth with incline to a partition side. EFFECT: treatment of lead concentrate of current production of raised humidity (up to 4-6%) ensuring additional recovery of metal from volatile dust-gas components by transmitting them through electro-thermal section; reduced exhaust of lead containing dust. 1 dwg
The technical field. The invention relates to the field of non-ferrous metallurgy and, in particular, to devices for the smelting of lead concentrate produced from scrap waste automotive batteries. The prior art. Known kratkovremenna oven for torch melting battery scrap. The disadvantage of the furnace is a large release of dusts (8-10%) and slag (about 20%), when the lead content is ~15%, in addition, the small resistance of the lining and a small capacity (see Khudyakov IVAN and other Technology secondary non-ferrous metals". M, metallurgy, 1981,80 pages) Known electrothermal smelting furnace battery scrap, dignity oven: simple regulation regimes, low output toxins (3-5%), while sod. Pb 1-4% and dust - about 4% (see Khudyakov IVAN and other Technology secondary non-ferrous metals". M, metallurgy, 1981, 80 pages) But at high humidity source material there is a necessity of drying, which leads to increased costs for construction and operation of the furnace complex. In addition, in the electro-thermal area of the arch, around the electrodes, quickly burns out and needs repair, and the bypass electrodes and the release of metal are time-consuming operations; for example, lead letku need to carefully incorporated after each release of metal and each time to burn before the release, it is connected with above the receiving labor (time, materials, energy and so on). Known furnace for processing battery scrap on the way Kivcet (CEPAL-WW), including the furnace hearth, the body placed in it a melting section with charge-oxygen burner and electric heating section, separated from the melting section of the water-cooled wall, not reaching the bottom (and immersed in the melt), with leccami for the production of slag and metal, with a hole for drainage sublimates and process gases and electrodes, "Metallurgical processing of secondary lead raw materials", Ed. Avetisova. - M.: Gintsvetmet, 2003. - 224 S. The main disadvantage of the known construction is the possibility of increased pilipinos and, in particular, due to the particle boundary size, which is not moved in the liquid metal phase in the flare area. In addition, there is the instability of the flow (under the wall), often overlapping the bottom wall accretions, and the need for drying of the source material (up to 1%). The closest analogue to the claimed invention is a plant for the processing of copper-zinc and lead-zinc materials, including the furnace hearth, the body placed in it a melting section with charge-oxygen burner, letkol for production of liquid metal bottom phase, a hole for the exhaust process gases and dust and the electrothermal seccia is, separated from the melting section of the water-cooled wall, not reaching the bottom, with letkol for the release of the slag hole for drainage sublimates and process gases and electrodes immersed in the slag melt and connected to the current source, characterized in that the melting section are additional electrodes installed on the furnace hearth and connected to one pole of the current source, with the electrodes placed in electrothermal section connected to the opposite pole of the current source. Patent RU No. 2236659 C1, F27B 3/08, SW 15/00, SW 19/00, SW 13/00, Author(s): NUS G.S. (RU); Tarasov A.V. (RU); Parecki V.M. (EN). The main disadvantage of known construction, as applied to the smelting of lead (Pb) concentrate produced from scrap automotive batteries, is the need for drying of the source material and the possibility of a large Pilipinas (through the opening for removal of process gases and dust from the flare zone on the filter). Re-melting of current dusts is associated with additional costs of re-heating and productivity, etc. in Addition, in electrothermal section of the arch around the electrodes quickly burns out and needs repair, and the bypass electrodes and the release of metal are time-consuming operations. The purpose of the invention. Environmental improvement and safety systemupdate and melting of scrap that can be downloaded granules current production moisture content of 4-6%, when increasing the reliability of equipment operation. The essence of the invention. 1. Furnace treatment of lead concentrate the current production - high humidity (up to 4-6%), obtaining (in the flare section) intermediates neutropaenic for further loading and melting in electrothermal section. 2. There is a possibility to extract metal from the "volatile", the dust and gas components of the flare bottoms as they travel in electrothermal section, thus reducing the output of lead-containing dust. This goal is achieved by the fact that the melting and thermal-section of the furnace is divided by a partition, forming (with the melt level) getoperation window of variable cross-section, and the device is of metal production are supplied by well connected to the channel with the lower peritonei area partition; however, changing a section of the window allows to select an optimal mode in accordance with a given ratio of the width of the furnace to the interaxial distance between the electrodes; in addition: - hitopadesha is provided with a groove superimposed on stage furnace hearth melting section, with a tilt to the side walls; - part of a series around the electrodes cheshireman, and the elds of application are made water cooled and with PNEVMATIKA. The relationship of these elements is shown and implemented as about the time. 1. Usually when loading the humidified raw material in the electrothermal furnace there is a risk of formation of explosive "slopes", while turning them wet mixture comes in contact with the liquid bath and there is an explosion - "cotton"; - stated in the furnace charge is fed to the chute 17, superimposed on stage furnace hearth 18 tilted to the side walls b". This relationship of the elements melting section 2 ensures secure melting and breaking (on the steps) wetted material and an inclined offset softened, when the torch is applied, the charge to the partition wall 6, in the main bath of the furnace; and the proximity of the channel 16 enhances the turbulization and mobility flows in the area of the partition 6. This eliminates the possibility of formation of slopes and "claps". 2. There is a possibility to extract metal from the "volatile", the dust and gas components torch melting due to: - blend the melted particles in the surface of the liquid bath in the zone getoperationname window of variable cross-section (formed by the partition separating the melting and thermal-section of the furnace); - and when fusing more refractory components during subsequent passage of dust and gas flow through the high-temperature electrothermal section. However, changing a section of the window, due to the rise of the sludge is dropping partitions, you can influence the dynamics of processes in - peritonei area and electric heating section of the furnace and select the best mode in accordance with a given ratio of the width of the furnace to the interaxial distance between the electrodes (or the length of the furnace); 4. - "release device of metal provided with a well connected by canal with peritonei area partitions"; - constructive implementation of these elements is used for rapid and/or continuous release of metal through the upper part of the well 15 (see also figure 2), i.e. no need to burn lead tapped with every release of lead; however, if necessary (for example, when emptying the furnace, then part of the flow channel 16 (well 15) is in the opposite direction) it is at the bottom, connected to the channel 16 of the well 15. 5. - the need to address the "quick burnout set around the electrodes..." and "time-consuming operations bypass electrodes are important in the design of the furnace, taking into account the possibility of intensification of heat flow (in the reflection inclined dust and gas flow from the surface of the liquid bath peritonei zone) and is due to the fact that "part of the code around the electrodes cheshireman, and the elds of application are made water cooled and with pneumatikos". The device description. The drawing shows the proposed device, glucouse the housing 1 and located it melting section 2 (feeder batch 3 and 4 burner) and electrothermal section 5, separated from the melting section by a partition 6, code 7, the furnace hearth 8, with the electrodes 9, 10 elds of application, devices for the production of metal 11, slag 12 and duct 13, getoperation window AC section 14, the well 15, the channel 16, the lower Protocol zone 14, the opening 19; chute 17, the speed furnace hearth 18. Principle of operation: the source material is fed to the flare zone 2, the chute 17, the resultant liquid metal fraction flows down a stepped Bodine in the area of the partition 6. The remaining part is more refractory and other solid fragments, and small (submicron size) particles move along the stepped surface of the inclined bottom 18 in the area of the partition 6. It is also possible to extract metal due to: 1. blend the dust and gas particles, for example, the partially melted (containing about 55-70% of lead in the surface layers of the liquid bath peritonei zone; 2. subsequent melting more refractory dust particles in the high temperature (and reactive) electrothermal furnace parts 5, after reflection inclined dust and gas flow from the surface of the liquid bath peritonei zone (through the window 14). Electrothermal section 5 is heated by means of electrodes 9, the slag is removed through the device for the production of slag 12, process gases and dust through the flue gas duct 13, and metallized ones) is annoy bottom phase (with possibility of rapid, i.e. it does not require the usual time for the rest of the lead yrs, and/or continuous release of metal) through the opening 19 of the channel 16, the well 15 and further to the discharge chute 11. Well 15 is connected by a channel 16 with the lower peritonei area 14 And the partition 6. In operation the bottom layers of the melt sufficiently agile. The increased mobility of the upper layers of the liquid bath, in the area of the window 14, promotes heated aimed powder-gas flow (from the melting section 2). However, changing a section of the window 14 allows to select an optimal mode in accordance with a given ratio of the width of the furnace 5 to the interaxial distance between the electrodes 9. Checking device. Experimental verification of the fundamental possibility of flare smelting of lead-containing briquettes moisture content of 4-6%, in experimental models of melting (flare) section. Processing was subjected to Pb concentrate battery scrap, pressed in the form of pellets (diameter of about 35 mm), containing on average %: lead - 65-70; moisture - 4-6. The fusion were obtained following intermediates, %:
In the test set: 1. Flare section of the unit allows treatment of lead concentrate high humidity (up to 4-6%) to obtain the intermediates neutropaenic for further loading and melting in electrothermal section. 2. There is a possibility to extract metal from the "volatile", the dust and gas components of the flare bottoms as they travel through getoperation window in electrothermal section and to reduce the release of dust. On the basis of positive results of tests of the melting section and given the long experience of the authors with electrothermal and other furnace equipment (LPK, now Ridder, Kazakhstan and others), is the project of reconstruction of the metallurgical production of JSC "PELVIS". The expected economic effect is more than 20 million rubles/year. Furnace for melting lead scrap waste automotive batteries, includes case and located it melting section with the feeder of the charge and the burner and electric heating section, separated from the melting section by a partition, not reaching the bottom, with the electrodes, the elds of application, devices for the production of metal, slag and flue different t is m, that the lower edge of the baffle is located above the device level for the production of slag, forming the melt level getoperation window of variable cross-section, and the release device of metal provided with a well connected by canal with peritonei area partitions, the cross section of the window, select in accordance with a given ratio of the width of the furnace to the interaxial distance between the electrodes, and the feeder of the charge is provided with a groove superimposed on stage furnace hearth with a tilt to the side walls.
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