WO2006075977A1 - Installation permettant la reduction directe d'oxydes de fer et la production de fonte de fer - Google Patents

Installation permettant la reduction directe d'oxydes de fer et la production de fonte de fer Download PDF

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Publication number
WO2006075977A1
WO2006075977A1 PCT/UA2005/000031 UA2005000031W WO2006075977A1 WO 2006075977 A1 WO2006075977 A1 WO 2006075977A1 UA 2005000031 W UA2005000031 W UA 2005000031W WO 2006075977 A1 WO2006075977 A1 WO 2006075977A1
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Prior art keywords
gas
reactor
reducing
plasma
reduction
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PCT/UA2005/000031
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English (en)
Russian (ru)
Inventor
Anatoly Timofeevich Neklesa
Andrej Stanislavovich Kljamko
Vadim Vladislavovich Novinskij
Vladimyr Andreevich Necheporenko
Vladimyr Alexandrovich Piven
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Anatoly Timofeevich Neklesa
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Application filed by Anatoly Timofeevich Neklesa filed Critical Anatoly Timofeevich Neklesa
Publication of WO2006075977A1 publication Critical patent/WO2006075977A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C21B13/143—Injection of partially reduced ore into a molten bath
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/12—Making spongy iron or liquid steel, by direct processes in electric furnaces
    • C21B13/125—By using plasma
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Definitions

  • the invention relates to the field of metallurgy and can be used to obtain reduction of iron in countercurrent with products of methane conversion and direct production of iron-carbon alloys using plasma technology.
  • a known method of producing sponge iron in a shaft furnace in which the metallization of the pellets is carried out by reducing gas, and partially on a freshly recovered hot sponge iron by blowing a mixture of natural gas and oxidizing agents into the intermediate zone of the furnace located between the recovery and cooling zones, while the optimal consumption of methane in the intermediate the zone is regulated depending on the catalytic properties of the charge, namely: when the CaO-MgO content in the charge is 0.2%, the methane flow rate is set to 200 m 3 / h per 1 m 3 working the space of the intermediate zone, and with an increase in the CaO-MgO content for each percent within 0.2–4.2%, methane consumption increases by 135-385 m 3 / hm 3 (USSR Patent JV ⁇ ° 1751991, class ⁇ 21 ⁇ 13
  • the closest in technical essence and the achieved result (prototype) method of direct production of iron was adopted, including preliminary reduction of the iron ore charge in the solid state in the preliminary reduction furnace, subsequent loading into the melt reduction furnace and re-reduction in the melt by supplying natural fuel and a gaseous oxidizing agent, which provides it combustion above the surface of the melt, the removal of gases from the melt reduction furnace, their cooling and supply to the preliminary reduction furnace, while the gas leaving the melt of the reduction furnace before being fed to the preliminary reduction furnace for partial reforming is mixed at the outlet of the furnace with a gaseous reducing agent having a high temperature, the temperature of the gaseous mixture is maintained in the range of 1200-1550 0 C.
  • the gas from the prereduction furnace is purified by oxidizing , Mixed with reformed gas and fed into the lower part of prereduction furnace.
  • the gas from the preliminary reduction furnace after purification from oxidizing agents is divided into two parts, one of which is mixed with the reformed gas and fed into the upper part of the preliminary reduction furnace, and the other with natural gas and fed into the lower part of the preliminary reduction furnace.
  • only the first part of the gas leaving the pre-reduction furnace is purified from oxidizing agents, and the second part is not purified from oxidizing agents, mixed with natural and reformed gases and fed to the lower part of the furnace (USSR Patent N ° 1609456, class C 21 V 13/14, publ. Bull. JV ° 43, 1990).
  • a device for recovering granular particles containing iron oxides using a reducing gas to produce direct reduction iron particles having an adjustable carbon content included therein comprising a moving bed reduction reactor, having a recovery zone, a loop for the reducing gas, designed to circulate at least most of the gas leaving the upper part of the recovery zone of the reactor for conditioning and enrichment and return it in the form of improved recirculating reducing gas to the recovery zone of the reactor, and the loop includes a recovery zone, a device for cooling and purifying gas, designed to cool and purify the gas leaving the top of the reactor, a pump for circulating reducing gas through the specified circuit and reactor, a device for removing carbon dioxide from the recycle reducing gas, a gas heater to increase the temperature of the gas stream circulating through the specified circuit, means for controlling the water content in the recycle reducing gas, the device contains means for adding natural gas to said circuit for reducing gas and means for mixing recirculating and natural gas and controlling the amount recycle gas before reducing gas enters the reactor (Russian Patent Xa 2190022, c
  • the closest in technical essence and the achieved result (prototype) adopted a device for the production of iron-carbon alloy, containing a reactor for the preliminary reduction of iron oxide material and a reactor connected to it to produce iron-carbon alloy, including the input unit of the pre-reduced material, the output units of the carbon alloy and slag, means for injecting oxygen into the melt and the removal of gaseous reaction products, and the reactor to obtain iron carbon of the alloy is made closed to restrict the intake of atmospheric gases therein and removing gaseous reaction products and is provided with additional means of oxygen injection in the space above the molten bath and an additional unit equipped with means for introducing alloying substances (Rossi Patent N ° 2060281, class ⁇ 21 ⁇ 13/14, application J ⁇ s5052777, publ. Bull. ⁇ 4, 1996).
  • the disadvantage of the design of the device is the low efficiency of iron ore reduction, since oxides are present in the conversion products.
  • the design of the device does not provide sufficient intensity of heat and mass transfer.
  • the first of the group of inventions is based on the task of improving the method in which a reducing plasma is applied to a moving layer of an iron ore charge, partially reduced material is periodically separated from the stream for melting, and the remaining stream is subjected to hot briquetting, while providing an increased degree of processing of reaction gases in plasma with the addition of natural gas, and due to this, the overall energy costs are reduced, the degree of gas use and the degree of recovery are improved. smelting of iron ore material.
  • the second of the group of inventions is based on the task of improving the installation for the recovery and smelting of metals, in which, due to the layout of the installation, including a vertical recovery reactor with a movable layer of an iron ore charge, equipped with a plasma-chemical gas generator, plasma melting furnaces connected by closed bypass channels, and installation for briquetting recovered material with gas pipelines and additional gas flow and pressure units, and due to this This ensures an effective and stable reduction reaction, improves the effectiveness of the reducing gas, and reduces the cost of the process of obtaining metal and briquettes.
  • the first task is solved in that in the method of direct reduction of iron oxides and obtaining an iron melt, which includes preliminary reduction of the iron ore charge in the solid state in the reduction reactor, subsequent loading of the reduced material into the smelting furnace and re-reduction in the melt, reuse of the gases leaving the smelting furnace to obtain a reducing gas mixture, formation in a reducing reactor temperature zones of heating and recovery, according to the invention, one recovery zone is formed in the middle part of the recovery reactor by the exhaust gases from its upper part, which after dry cleaning are compressed in a plasma chemical gas generator, and part of the stream is taken from the exhaust gas, processed in a preparation unit and fed to plasmatrons plazmohimicheskogo gasifier for conversion of natural gas and water, is obtained therein CO and H 2 of a predetermined concentration, and above the first zone is formed a second reductive an area in which purified gas is used as a reducing gas, leaving the plasma melting furnaces, in which the metallized product is melted by lower blowing with a reducing
  • the process of direct reduction of metal-containing ore takes place in a continuous reactor, vertical type, with the material moving from top to bottom, in which the supply of material, oxidation-reduction processes, release of the reduced material, heat recovery and suppression of harmful emissions are combined in time.
  • the method also includes the production of molten metal using closed plasma melting furnaces, which are alternately loaded with reduced material of a given volume, the material is melted by reducing plasma jets formed by the conversion of the plasmatron of natural gas with water and an oxygen-containing gas until the melt temperature exceeds its melting point by 100-120 0 C, and the finished molten metal and slag are poured into the ladle.
  • the method involves the recovery of material by high-temperature zones using gases from the recovery and smelting reactors.
  • One reduction zone is formed in the middle part of the reduction reactor with gases leaving its upper part, which, after dry cleaning, are compressed in a plasma-chemical gas generator, and part of the stream is processed in the preparation unit and fed to the plasma torches of the plasma-chemical gas generator for conversion with natural gas and water and obtaining a given concentration in it CO and H 2 , and above the first zone parallel to it, form a second zone, in which the purified gas leaving the variable melting furnaces.
  • the degree of recovery can be controlled by adjusting the speed of the charge transfer in the reduction reactor, with a stable temperature exposure to the reducing gas, or the amount of reducing gas supplied to the charge layer through the reduction zones - simultaneously in two parallel streams, during the operation of plasma melting furnaces and a plasma chemical gas generator.
  • the method allows heating new portions of the charge, which are loaded into the reduction reactor, by burning part of the reducing gas inside the reactor in an additional air stream, which is blown into the charge with separate jets along the perimeter of the reactor in the upper part of the charge column.
  • the second task is solved in that in the installation for the direct reduction of iron oxides and obtaining an iron melt containing a reduction reactor for reducing iron oxide material and a furnace connected to it for producing an iron-carbon alloy, made with the possibility of limiting the inlet of atmospheric gases and removal of gaseous reaction products , according to the invention, in the middle part of the reduction reactor there is a reduction zone, which includes parallel to it on the outer surface and the distribution headers of the reducing gas spaced apart in height, the outlet channels of which are in communication with nozzles installed in the reactor, while the input of the lower distribution manifold is in communication with a plasma-chemical gas generator, the input channel of which is connected to the pipeline of the gas leaving the recovery reactor, and the input of the upper distribution the collector is connected by a pipeline
  • the off-gas preparation unit includes a cyclone, a bag filter, a heat exchanger, and a compressor, and the plasma-chemical gas generator comprises a chamber connected through a purification cyclone and a smoke exhauster to the circuit of the exhaust gases from the reduction reactor, in which the plasma torches of indirect action are installed.
  • Installation in accordance with the present invention, contains a continuous recovery reactor of a vertical type with the passage of materials from top to bottom, made with the possibility of restricting the flow of gases into it from the atmosphere.
  • Distinctive features of the installation is the implementation of a recovery reactor, in which recovery zones are located in the middle part, including parallel mounted distribution gas collectors of reducing gas, one of which is connected at the inlet to a plasma-chemical gas generator designed to generate reducing gas using plasmatrons from the exhaust gases of the reducing reactor, and the second - through a cleaning cyclone connected by a pipeline for supplying exhaust gases from a plasma smelter x furnaces in which the exhaust gases contain only carbon monoxide and hydrogen.
  • the off-gas generated in plasma melting furnaces is used for the subsequent recovery step by stabilizing its composition in the plasma torches, thereby increasing the degree of utilization of the off-gas and reducing the consumption of natural gas.
  • the design of the nodes of the reduction zone allows you to evenly distribute the gas in the charge layer, to average its reduction potential, which contributes to an increase in the rate of reduction of iron oxides.
  • Sources of heating and production of reducing gas in plasma melting furnaces and a reducing reactor are indirect plasmatrons.
  • a pre-heating system for new batches of the charge made in the form of a collector, the inlet of which is connected to a source of compressed atmospheric air, and the outlet openings of the collector are spaced around the perimeter of the reactor, is installed.
  • Closed bypass channels for transferring the metallized charge directly from the recovery zone of the reactor ensure the supply of reduced material to the melting furnace at a temperature of 900-1000 0 C. Due to this, the time of operation of the plasma torches is reduced, and the energy consumption is reduced.
  • the invention is illustrated by the drawing, which shows a diagram of a plant for the direct reduction of iron oxides and the production of molten iron.
  • the claimed method is implemented as follows.
  • the charge material containing iron oxides is loaded into a reduction reactor, in which the lowering layer of the iron ore charge is in countercurrent contact with the rising flow of hot reducing gas to convert the charge into metallic iron.
  • the material is reduced by exposing it to reducing gas, which is introduced into the reactor distributed around the charge column by two transverse high-temperature zones located in the middle of the reactor.
  • the lower, main reduction zone is formed by the gases leaving the reduction reactor, which, after dry cleaning, are pumped into a plasma-chemical gas generator, while some of the gases are taken from this stream, further purified, cooled to 30 0 C, the gas pressure is normalized to A-6 atm and fed into plasmatrons of a plasma chemical gas generator with simultaneous supply of natural gas and water to these plasmatrons, and the plasma obtained in plasmatrons is mixed with purified exhaust gas in a plasma chemical reactor and the resulting recovery
  • the control gas is sent to the charge layer in the temperature range 900-1150 0 C.
  • the charge located below the reduction zone is discharged and reloaded into the reactor and, subsequently, the desired level of the charge column is maintained by cyclic loading of material at a constant flow rate.
  • the metallized material is loaded into the plasma melting furnaces alternately through the unloading unit and bypass channels from the recovery zone of the reduction reactor and, during operation of the melting furnaces, a second high-temperature zone is formed in the reduction reactor, due to the dust-free gases leaving the melting furnaces.
  • the material in each plasma melting furnace is purged with a reducing gas formed by the conversion of natural gas with water and an oxygen-containing gas in the melting plasmatrons.
  • the material loaded into the furnace is melted and finally reduced in the melting zone until the temperature of the melt reaches its melting point by 100-120 0 C.
  • the reduction reactor arises the need for preheating of the charge material. Heating is carried out by burning part of the reducing gas in an additional air stream, which is blown into the charge with separate jets along the perimeter of the reactor in the upper part of the charge column.
  • the metallized charge is cooled in the lower part of the reduction reactor to a temperature of ⁇ 500 ° C.
  • the metallized charge continuously flowing out of the reactor is sent to be loaded into a melting furnace, as well as to produce briquettes.
  • the test facility consists of a reduction and smelting reactor.
  • An experimental reduction reactor with an inner diameter of 0.45 m and a height of 5 m is loaded with raw materials consisting of an iron ore concentrate enriched in a flotation process and binders.
  • the feedstock contains Fe 2 O 3 - 63.1%, FeO - 26.9%.
  • the total iron content in the charge was 65.07%.
  • the material goes through a screening stage for screening a fraction of 0-10 mm.
  • the reactor material is loaded fraction of 10-25 mm
  • the mass of the charge in the reduction reactor is 1400 kg, and about 1000 kg of the charge is in the high-temperature zones of preheating and recovery.
  • the mixture is preheated by supplying natural gas and air to the middle part of the reactor.
  • the heating temperature is controlled by thermocouples and, when the mixture reaches a temperature of 1000-1100 0 C, they include plasmatrons of a plasma-chemical gas generator, into which natural gas and air are supplied in an amount of Gpg - 12 g / s, Gawd - 27 g / s.
  • the reducing gas obtained in the plasma-chemical gas generator contains H 2 - 55.5%; ⁇ - 17.6%; CO 2 0.3%; CH 4 is 2.5% and N 2 is 24%. Bring the temperature of the mixture to 900-1150 C. Open the gate in an oblique chute and release part of the mixture, which is located below the recovery zone.
  • the charge height is adjusted by cyclic loading to 4.8 m, while the degree of metallization of the material (not lower than 90-92%) is controlled by the speed of movement of the charge and the amount of additional gas supplied after cleaning.
  • the speed of movement of the charge was 1.2 ⁇ 1.4 m / h, while the productivity of the installation was AND
  • the total iron content of Fe0b 82-84% with a metallization degree of 92.6-94.2%.
  • part of the material from the reduction reactor is loaded into a plasma melting furnace.
  • the mass of loading makes 250-300 kg.
  • the material loaded into the furnace is melted, having previously added 25–30 kg of limestone to slag the gangue. After heating the melt to a temperature of 1680-1750 0 C it is released.
  • the installation for the direct reduction of iron oxides and the production of molten iron includes a reduction reactor 1 and plasma melting furnaces 2.
  • a charging device 3 is mounted in the upper part of the reduction reactor, and in the middle part there is a reduction zone, which includes parallel located on its outer surface and spaced height distribution manifolds 4 and 5 of the reducing gas, the outlet channels of which are in communication with nozzles 6 installed in the reactor.
  • the inlet of the upper distribution manifold 4 is connected to the pipeline for supplying exhaust gases from the plasma melting furnaces 2 through a gas purification cyclone 7.
  • the inlet of the lower manifold 5 is in communication with a plasma-chemical gas generator 8, including a chamber connected on one side to the circuit 9 of the exhaust gases from the reduction reactor 1, a cyclone 10 gas purification and smoke exhaust 11, and on the other - with the output channel 12 for the supply of reducing gas to the reactor.
  • Indirect-action plasma torches 13 are installed in the chamber body of the plasma-chemical gas generator 8, connected with the off-gas preparation unit 14, a natural gas supply pipeline, a water supply line and a power source (not shown in the drawing).
  • a charge pre-heating system is mounted, which includes a collector 15 with nozzles 6 and a source of compressed air 16.
  • Indirect plasma torches 18 are installed in the plasma melting furnace 2, in the melting zone 17, symmetrically to its longitudinal axis.
  • the plasma torches 18 are connected at the inlet to the exhaust gas preparation unit 14, a power source, a water supply line and a supply pipe natural gas (not shown), while the off-gas preparation unit 14 includes a bag filter 19, a heat exchanger 20, and a compressor 21.
  • the reduced iron ore material unloading unit 22 is located below the recovery zone collector 5 and is connected by closed bypass channels 23 to the melting furnace 2.
  • a unit 24 for cooling the reduced material is connected, connected to the exhaust gas circuit 9, as well as a unit 25 for unloading the reduced material, to which closed bypass channels 26 associated with the installation of briquetting 27.
  • the melting furnaces 2 and the reduction reactor 1 are equipped with thermocouples along the height of the vessel. In plasma melting furnaces 2 in the lower part there are notches 28 for the discharge of metal and slag. Installation works as follows.
  • a charge containing iron oxides is loaded into the reactor through the charging device 3.
  • the height of the charge column is brought to a predetermined level, a plasma-chemical gas generator 8 is turned on, for which voltage, natural gas, water and compressed air are supplied to the plasma torches 13.
  • a reducing gas is formed in the plasma-chemical gas generator, which is transported through the outlet channel 12, the distribution manifold 5 and the nozzle 6 by jets into the charge layer.
  • a closed loop 9 is formed from the exhaust gases from the upper part of the reduction reactor, in which a gas purification cyclone 10 and a smoke exhauster 11 are installed, pneumatically connected to the chamber of the plasma-chemical gas generator 8, while some of the gases are separated from the loop 9 and sent to the exhaust gas preparation unit 14, in which the gas is additionally purified in a bag filter 19, the gas is cooled to 30 0 C in the heat exchanger 20, the gas pressure is raised to 4-6 atm in the compressor 21 to ensure the operation of the plasma torches.
  • the choice of dimensions of the recovery reactor and its gas supply pipelines are carried out taking into account the receipt of a given amount of metallized material and its subsequent use to obtain a melt in several plasma melting furnaces, as well as for the manufacture of metallized briquettes.
  • compressed air is blown through the manifold 15 into the zone of arrival of the loaded portions of the starting material, while the combustion reaction of the upward reducing gas stream and the blown air stream is carried out, which ensures the heating of new portions of the starting material loaded into the reactor.
  • the loading of the melting furnaces 2 with the reduced metallized material is carried out alternately through the assembly 22, the bypass channels 23, based on the operation cycles of each furnace.
  • the furnace After loading the furnace include plasmatrons 18 installed in the melting zone 17 and purge the metallized charge with reducing gas. Under the action of reducing plasma jets, the charge in the melting zone is intensively melted, and then the plasma jets purge the melt layer. The liquid slag and metal formed in the melting furnace are discharged through a notch 28. As a result of the operation of the plasma torches during melting of the metallized charge, the reducing gas leaving the melting plasma furnaces is sent through a gas purification cyclone 7 to the upper recovery zone 4 in reactor 1.
  • the metallized charge layer is purged with reducing gases, which are passed from the cooling unit 24 and the temperature of the mixture is brought to 500 0 C, the charge is released through the discharge unit 25 and passed by channels 26 to the briquetting unit 27. With the constant movement of the charge from top to bottom inside the reactor, the level of the charge column is maintained by its cyclic loading.
  • the implementation of the invention will bring the recovery reaction time closer to the time of the chemical reaction, achieve a higher degree of reduction of iron from oxides, provide high-speed chemical reduction reactions at a combination of high temperatures, achieve a uniform and constant degree of metallization, and the continuity of the process by combining all its operations in time from the supply of a charge and a reducing agent to the reactor, to the release of metal and briquettes, improve waste gas utilization, increase the efficiency of metal smelting.
  • An additional result is also the environmental aspect of solving the problem.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacture Of Iron (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

La présente invention se rapporte à un procédé qui consiste à charger une matière de charge dans un réacteur de réduction (1), et à procéder à la réduction de ladite matière à l'aide d'un gaz qui est introduit dans le réacteur et réparti autour d'une colonne de matière de charge sous la forme de deux zones à haute température transversales ; à former une zone inférieure (5) à l'aide de gaz sortant du réacteur de réduction, qui sont comprimés dans un générateur de gaz plasmochimique (8) après épuration par voie sèche ; à former, au-dessus de la zone inférieure, une seconde zone de réduction (4), dans laquelle un gaz purifié sortant de fours de fusion à plasma (2) est utilisé comme gaz de réduction ; à décharger la charge métallisée du réacteur (1) à l'aide de deux écoulements, pour l'agglomération et la charge des fours de fusion à plasma (2) ; en cas de réacteur (1) de grande hauteur, à préchauffer la charge en brûlant une partie du gaz de réduction dans un flux d'air supplémentaire qui est introduit par le soufflage de jets sur le pourtour du réacteur dans la partie supérieure de la colonne de charge par l'intermédiaire d'un collecteur (15). Les plasmotrons du générateur de gaz plasmochimique (8) et des fours de fusion (2) sont reliés au niveau de leur entrée avec une source d'alimentation électrique, une unité de préparation de gaz de sortie (14), et une conduite principale d'eau et de gaz naturel.
PCT/UA2005/000031 2005-01-17 2005-07-21 Installation permettant la reduction directe d'oxydes de fer et la production de fonte de fer WO2006075977A1 (fr)

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UAA200500401A UA79476C2 (en) 2005-01-17 2005-01-17 Method for direct reduction of ferric oxides with obtaining iron melt and unit for realizing the same
UAA200500401 2005-01-17

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WO2009146982A1 (fr) * 2008-06-06 2009-12-10 Siemens Vai Metals Technologies Gmbh & Co Procédé et équipement de fabrication de fonte brute ou d'ébauches liquides en acier
WO2010086229A1 (fr) * 2009-01-30 2010-08-05 Siemens Vai Metals Technologies Gmbh & Co Procédé et installation de production de fer brut ou de semiproduits en acier liquide
US8911700B2 (en) 2009-02-20 2014-12-16 Siemens Vai Metals Technologies Gmbh Process and installation for producing substitute gas
EP3269830A4 (fr) * 2015-03-13 2018-08-08 Tleugabulov, Suleiman Procédé de fusion réductrice d'acier et dispositif pour sa mise en oeuvre
WO2023142481A1 (fr) * 2022-01-25 2023-08-03 中冶长天国际工程有限责任公司 Procédé de réduction directe et appareil de réduction directe pour pastilles composites contenant du fer

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AT509357B1 (de) * 2010-01-15 2012-01-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur reduktion von eisenerzhältigen einsatzstoffen oder zur herstellung von roheisen oder flüssigen stahlvorprodukten
WO2021221529A1 (fr) * 2020-04-29 2021-11-04 Vigdorchikov Oleg Valentinovich Procédé de réduction directe de concentré de minerai de fer et de production d'un bain de fusion de fer magnétique mou (armco), et installation pour sa mise en oeuvre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2092617A (en) * 1981-02-11 1982-08-18 Skf Steel Eng Ab Manufacturing sponge iron
SU980629A3 (ru) * 1980-06-10 1982-12-07 Скф Стил Инджиниринг Актиеболаг (Фирма) Способ восстановлени пылевидных окислов в шахтном реакторе
SE446743B (sv) * 1980-09-29 1986-10-06 Skf Steel Eng Ab Sett och anordning for framstellning av jernsvamp i schaktugn med hjelp av plasmagenerator
RU2060281C1 (ru) * 1991-10-03 1996-05-20 Каргилл, Инкорпорейтед Способ производства железоуглеродистого сплава (его варианты) и устройство для его осуществления

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU980629A3 (ru) * 1980-06-10 1982-12-07 Скф Стил Инджиниринг Актиеболаг (Фирма) Способ восстановлени пылевидных окислов в шахтном реакторе
SE446743B (sv) * 1980-09-29 1986-10-06 Skf Steel Eng Ab Sett och anordning for framstellning av jernsvamp i schaktugn med hjelp av plasmagenerator
GB2092617A (en) * 1981-02-11 1982-08-18 Skf Steel Eng Ab Manufacturing sponge iron
RU2060281C1 (ru) * 1991-10-03 1996-05-20 Каргилл, Инкорпорейтед Способ производства железоуглеродистого сплава (его варианты) и устройство для его осуществления

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WO2009146982A1 (fr) * 2008-06-06 2009-12-10 Siemens Vai Metals Technologies Gmbh & Co Procédé et équipement de fabrication de fonte brute ou d'ébauches liquides en acier
CN102057060A (zh) * 2008-06-06 2011-05-11 西门子Vai金属科技有限责任公司 生产生铁或者液态钢初级产物的方法和装置
JP2011522126A (ja) * 2008-06-06 2011-07-28 シーメンス・ファオアーイー・メタルズ・テクノロジーズ・ゲーエムベーハー 銑鉄又は液状鋼原材料を製造するためのプロセス及び装置
US8632622B2 (en) 2008-06-06 2014-01-21 Siemens Vai Metals Technologies Gmbh Process and device for producing pig iron or liquid steel precursors
US9181594B2 (en) 2008-06-06 2015-11-10 Siemens Vai Metals Technologies Gmbh Process and device for producing pig iron or liquid steel precursors
WO2010086229A1 (fr) * 2009-01-30 2010-08-05 Siemens Vai Metals Technologies Gmbh & Co Procédé et installation de production de fer brut ou de semiproduits en acier liquide
CN102378818A (zh) * 2009-01-30 2012-03-14 西门子Vai金属科技有限责任公司 用于制造生铁或液态钢半成品的方法和设备
US8968441B2 (en) 2009-01-30 2015-03-03 Siemens Vai Metals Technologies Gmbh Method and system for producing pig iron or fluid steel pre-products
CN102378818B (zh) * 2009-01-30 2015-09-23 西门子Vai金属科技有限责任公司 用于制造生铁或液态钢半成品的方法和设备
US8911700B2 (en) 2009-02-20 2014-12-16 Siemens Vai Metals Technologies Gmbh Process and installation for producing substitute gas
EP3269830A4 (fr) * 2015-03-13 2018-08-08 Tleugabulov, Suleiman Procédé de fusion réductrice d'acier et dispositif pour sa mise en oeuvre
WO2023142481A1 (fr) * 2022-01-25 2023-08-03 中冶长天国际工程有限责任公司 Procédé de réduction directe et appareil de réduction directe pour pastilles composites contenant du fer

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