Furnace for processing oxidized ore materials containing nickel, cobalt, iron |
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IPC classes for russian patent Furnace for processing oxidized ore materials containing nickel, cobalt, iron (RU 2315934):
  
 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).
 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.
 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 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.
 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%.
 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.
 Vanyukov furnace for continuous melting of materials containing non-ferrous and ferrous metals / 2242687
The invention relates to the field of metallurgy, in particular to a device for the continuous processing of laterite Nickel ore
 Furnace continuous refining of magnesium / 2228964
The invention relates to ferrous metallurgy, in particular to a device for refining magnesium
 Method and device for the production of gallium from waste semiconductor gallium phosphide / 2226563
The invention relates to the technology of waste processing semiconductor of gallium phosphide to extract expensive and scarce gallium
 Furnace for refining magnesium / 2222623
The invention relates to metallurgy, in particular to the furnaces for refining magnesium
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, namely aggregates for continuous melting of oxidized nickel-containing raw materials. SUBSTANCE: 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. EFFECT: possibility for providing continuous stable processing of oxidized ore materials, improved efficiency of furnace, extraction of non-ferrous metals to metal-containing melt, lowered consumption of fuel, reducing agent, sulfidizing agent, decreased expenses for melting. 2 cl, 1 dwg
The invention relates to the field of metallurgy, in particular to assemblies for continuous smelting of oxidized Nickel materials. Known furnace for continuous melting of materials containing non-ferrous and ferrous metals, including caisson shaft, divided by transverse partitions into the camera oxidative melting and camera recovery of slag with lances, stage furnace hearth, the siphon with holes for release of slag and metalloceramic phase. The lower edge of the partitions located on the side of the camera oxidative melting installed on 5-15 diameters lance camera oxidative melting point below the axis of these tuyeres, and the upper edge of this partition is located above the axis of the tuyere camera recovery of oxides of the slag 2.5-4.5 distances from the axis of the tuyere camera recovery of oxides of the slag to the threshold of the outlet openings of the slag (RF Patent No. 2242687, publ. 20.12.2004,). The disadvantages of the known device, taken as a prototype, include the following. When the flow of melt through the bottom edge of the partition separating the chamber oxidative melting and camera recovery of oxides of the slag, the formation of wall accretions, preventing uniform flow of the melt in the chamber of the recovery of oxides of the slag. Thus, it is necessary to stop the loading of the charge, to raise t is mperature melt in the chamber of oxidative melt to melt has nastily, that breaks the continuity of the process, reduces the performance of the unit and degrade its technical and economic indicators. When erosion has nastily hot melt from the camera oxidative melting massively, in a large number of "breaks" in camera recovery of oxides of the slag and later in the siphon. In this situation violated the recovery processes of the oxides of the slag melt, worsening conditions for the formation and separation of matte and slag, which leads to increased losses of Nickel and cobalt from slag. Rehabilitation-sulfiding treatment of the melt in the chamber of the recovery of oxides of the slag possible partial "transfer" together with the slag droplets formed matte and particles of sulfidization (pyrites) through small partition peritoneo device (internal siphon) into the camera oxidative melting that frustrating process and leads to excess reductant and sulfidization. In addition, flat furnace hearth camera recovery of oxides of the slag contributes to the bottom nataleoprasetio and overlapping blast hole hole, which complicates the maintenance of the furnace, breaks the continuity of melting and also reduces the performance of your raw processing. The technical result of the proposed device is continuous and stable p is rerabotka oxidized ore materials increase furnace productivity and recovery of non-ferrous metals in the metal-containing melt, reducing the cost of fuel, reductant, sulfidization and material costs for smelting. The technical result is achieved by the fact that in the furnace for continuous melting of oxidized ore materials containing Nickel, cobalt, iron, comprising a caisson shaft, separated by a vertical transverse partition on melting and rehabilitation camera, equipped with lances, single speed cameras the furnace hearth, the siphon with peritonism channel and holes for the release of the slag and the metal-containing melt, a vertical transverse partition is hermetically secured on the furnace hearth melting chamber and height 35-55 diameter tuyere smelting chamber above the plane of the tuyeres of this chamber, and the furnace hearth restoration of the camera from vertical transverse partitions to peritonea canal siphon is made inclined at an angle 25-60 degrees to the horizontal. The drawing shows a schematic longitudinal section of the proposed two-chamber Vanyukov furnace for processing oxide ore materials containing Nickel, cobalt and iron. Vanyukov furnace proposed designs are supplied housed in the vault of the melting chamber 1 boot device 2 for supplying the oxidized ore, fluxes (mixture) is a solid fuel (coal) and Atacama 3 (gas) for the flue. Boot device 4 for feeding solid reductant (coal) and sulfidization (pyrites) is placed in the firmament of the recovery chamber 5. For feeding oxygen-containing bubbles in the melt in the side walls of the melting chamber 1 is set to lance 6, and in the side walls of the recovery chamber 5 posted by lance 7. A vertical transverse partition 8 dividing melting and recovery of the camera installed on the furnace hearth melting chamber is sealed and executed with the height of 35-55 diameter tuyeres melting chamber above the plane of the tuyeres of this camera. The window for the release of the slag 9 is made in the upper part of the slag trap 10, and the device for production of metal-containing melt (matte) 11 made in the lower (bottom) portion of the slag trap 10. The furnace hearth regenerative chamber 12 from the vertical transverse partitions 8 in the direction peritoneo channel 13 slag trap 10 is made inclined at an angle 25-60 degrees to the horizontal. Increasing the height of the vertical transverse wall separating the melting and recovery of the camera, more than 55 diameter tuyeres melting chamber above the plane of the tuyeres of this chamber leads to the increase of the slag melt, deterioration of the conditions of fuel combustion in the melting chamber and decrease the performance of the furnace for processing the charge. The decrease in the height of the vertical is Noah cross partitions, separating the melting and recovery of the camera, less than 35 diameter tuyeres melting chamber above the plane of the tuyeres this camera leads to getting together with the slag of the solid components of the mixture and fuel from the melting chamber in the recovery chamber. At the same time there is a transfer of part of the molten slag and matte, reductant and sulfidization of recovery in the melting chamber of the furnace. In this case, the reduced capacity of the furnace (fusion) for processing the charge, increase the costs of air, fuel, reductant and sulfidization on melting, the material costs. Execution hearth regenerative chamber with a bias towards peritoneo channel slag trap at an angle to the horizontal less than 25 degrees leads to rapid formation of wall accretions and overlapping blast hole hole, which complicates the maintenance of the furnace, breaks the continuity of the production process and reduces the melting performance. Execution hearth regenerative chamber with a bias towards peritoneo channel slag trap at an angle to the horizontal of more than 60 degrees does not provide the necessary conditions for the separation of slag and metal-containing melt and release them through peredachny channel in the slag trap, which reduces the extraction of Nickel and cobalt in the metal-containing the melt and increases material costs for processing of raw materials. Vanyukov furnace proposed construction works as follows. In the melting chamber through the loading device on the slag melt, stir oxygen-blown, served continuously oxidized ore materials containing Nickel, cobalt and iron, solid fuel (coal) and flux. Oxygen-containing blast and natural gas continuously served in the slag melt through tuyeres mounted in the side walls of the melting chamber. The temperature in the melting chamber maintained within the range of 1400-1500°C. Exhaust gases from the melting chamber is removed through aptac. Surfaced in the melting chamber of the slag melt through the upper edge of the vertical transverse wall separating the melting and regenerative chamber, which is continuously fed in the recovery chamber. On arriving in the recovery chamber slag melt through the loading device continuously served the reducing agent (coal) and sulfidization (pyrite). While the slag bath restorative camera continuously stirred for oxygen-blown, supplied with natural gas in the slag melt through tuyeres mounted in the side walls of the regenerative chamber. The temperature in the reducing chamber is maintained at the level 1360-1420°C. Exhaust gas recovery chamber prowess is conducted through aptac. Processed slag from the recovery chamber through peredachny channel enters the slag trap and continuously drained through the slag screen. The metal-containing melt (Stein), separated from the slag and accumulating at the bottom of the slag trap periodically drained through outlet (hole). 1. Furnace for continuous melting of oxidized ore materials containing Nickel, cobalt, iron, comprising a caisson shaft, separated by a vertical transverse partition on melting and rehabilitation camera, equipped with lances, single speed cameras the furnace hearth, the siphon with peritonism channel and holes for the release of the slag and the metal-containing melt, characterized in that the vertical transverse partition is hermetically secured on the furnace hearth melting chamber and performed above the plane of the tuyeres of the furnace chamber to a height of 35-55 its diameter. 2. Furnace according to claim 1, characterized in that the furnace hearth restoration of the camera from vertical transverse partitions to peritonea canal siphon is made inclined at an angle 25-60° to the horizontal.
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