ПЕЧЬ ДЛЯ ТЕРМООБРАБОТКИ КРУПНОГАБАРИТНЫХ ИЗДЕЛИЙ

Печь для термообработки крупногабаритных изделий, содержащая основание с песчаной подушкой, цилиндрическую секцию, нагревательный колпак и систему нагрева и циркуляции воздуха с тангенциально установленными горелками, отличающаяся тем, что основание выполнено заодно с цилиндрической секцией в виде опорного стакана с футерованными огнеупорным кирпичом дном, обечайкой и размещенными в ней тангенциальными гнездами для стационарной установки горелок, причем стенки тангенциальных гнезд образуют направляющие каналы для организации заданного направления и повышения интенсивности движения потоков горячего воздуха. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 80 849 U1 (51) МПК C21B 11/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2008136503/22, 10.09.2008 (24) Дата начала отсчета срока действия патента: 10.09.2008 (45) Опубликовано: 27.02.2009 (73) Патентообладатель(и): Открытое акционерное общество "Тамбовский завод "Комсомолец" имени Н.С. Артемова" (RU) U 1 8 0 8 4 9 R U Ñòðàíèöà: 1 ru CL U 1 Формула полезной модели Печь для термообработки крупногабаритных изделий, содержащая основание с песчаной подушкой, цилиндрическую секцию, нагревательный колпак и систему нагрева и циркуляции воздуха с тангенциально установленными горелками, отличающаяся тем, что основание выполнено заодно с цилиндрической секцией в виде опорного стакана с футерованными огнеупорным кирпичом дном, обечайкой и размещенными в ней тангенциальными гнездами для стационарной установки горелок, причем стенки тангенциальных гнезд образуют направляющие каналы для организации заданного направления и повышения интенсивности движения потоков горячего воздуха. 8 0 8 4 9 (54) ПЕЧЬ ДЛЯ ТЕРМООБРАБОТКИ КРУПНОГАБАРИТНЫХ ИЗДЕЛИЙ R U Адрес для переписки: 392620, г.Тамбов, ул. Советская, 51, ОАО "Тамбовский завод "Комсомолец" им. Н.С. Артемова", БПиЛР, В.И. Семененко (72) Автор(ы): Артемов Владимир Николаевич (RU), Богуш ...

Method and apparatus for making liquid iron and steel

A carbonaceous-based metallizing method and apparatus wherein a metallic oxide is converted into a carbon-containing, metallized intermediate that is melted in an induction channel furnace to produce liquid metal from said metallic oxide. In the application of iron ore in the form of fines or concentrate, using low-cost coal will greatly reduce capital and operating costs by virtue of eliminating agglomeration of ore, cokemaking, and blast furnace operation. The liquid iron so produced is efficiently converted into steel in a steelmaking furnace such as a basic oxygen furnace (BOF), especially when it is physically integrated to the induction channel furnace wherein the liquid iron is directly poured into the integrated BOF by the induction channel furnace, producing low-cost steel, little heat loss, and minimum emissions.

Apparatus for manufacturing molten metal

Disclosed is a molten metal producing device capable of effectively preventing a hanging of a metal agglomerate raw material layer and capable of reliably removing hanging even if the hanging occurs. Raw material for forming the raw material layer (A) and metal agglomerate raw material (B) are charged in this order from raw material charging chutes ( 4,4 ) at either end portion ( 2,2 ) of a stationary non-tilting arc furnace in the width direction of the furnace so as to form raw material layers ( 12 ) each having a sloping surface extending downward to the portions of electrodes ( 5 ) disposed in a central region in the furnace width direction and metal agglomerate raw material layers ( 13 ) on the slopes, respectively. Molten iron is produced by sequentially melting lower end portions of the metal agglomerate raw material layers ( 13 ) by arc heating at the electrodes ( 5 ). At the same time, an oxygen containing gas (C) is blown from secondary combustion burners ( 6 ) in a furnace top ( 1 ) so as to cause the combustion of a CO containing gas generated from the metal agglomerate raw material layers ( 13 ) while the metal agglomerate raw material layers ( 13 ) descend along the sloping surface of the raw material layer ( 12 ), and the metal agglomerate raw material layers ( 13 ) are heated by the radiant heat of the secondary combustion. Shock generators ( 18 ) are disposed above a molten slag layer ( 15 ) and below surfaces of the metal agglomerate raw material layers ( 13 ) inside the furnace.

PARTIALLY-REDUCED IRON PRODUCING METHOD AND PARTIALLY-REDUCED IRON PRODUCING APPARATUS

A reduction furnace includes a pellet material supplying device forming on a grate an ignition carbon material layer having a predetermined height; an ignition device; and an exhaust gas circulation device supplying an oxygen-containing gas comprising circulated exhaust gas mixed with air, to a packed bed of the pellets heated by a combustion heat of the ignition carbon material layer. A partially-reduced iron is produced by thermally reducing the pellets through a combustion region for the ignition carbon material layer and a heating region, the combustion region formed upstream in a travelling direction of the grate by supplying a gas having a high oxygen concentration, the heating region formed downstream of the combustion region by supplying a gas having a low oxygen concentration. 1. A partially-reduced iron producing method comprising the steps of:laying an ignition carbon material to a predetermined height on an endless grate;igniting the ignition carbon material, and then packing raw-material pellets on the ignited ignition carbon material, the raw-material pellets formed by mixing and pelletizing a reduction carbon material and a raw material containing iron oxides;causing a flammable volatile component to be generated from the reduction carbon material in the raw-material pellets and combust, by use of a combustion heat of the ignited ignition carbon material;causing a temperature of the raw-material pellets to further rise by use of a combustion heat of the flammable volatile component, so that a reduction reaction proceeds and a carbon monoxide gas is generated, while causing the raw-material pellets adjacent thereto to be heated by use of the combustion heat, so that a flammable volatile component is generated from the reduction carbon material in the adjacent portions of the raw-material pellets;increasing a concentration of the carbon monoxide gas near the raw-material pellets having the temperature further raised, to a combustion range of the carbon ...

SYSTEM AND METHOD FOR REDUCING IRON OXIDE TO METALLIC IRON USING COKE OVEN GAS AND OXYGEN STEELMAKING FURNACE GAS

Novel systems and methods are described for reducing iron oxide to metallic iron in an integrated steel mill or the like that has a coke oven and/or an oxygen steelmaking furnace. More specifically, the present invention relates to novel systems and methods for reducing iron oxide to metallic iron using coke oven gas (COG) or COG and basic oxygen furnace gas (BOFG). 1. A method for reducing iron oxide to metallic iron using coke oven gas (COG) , comprising:providing a top gas stream from a direct reduction shaft furnace;reforming natural gas with the top gas stream in a reformer to form a reducing gas stream and providing the reducing gas stream to the direct reduction shaft furnace to reduce the iron oxide to the metallic iron; andproviding a COG stream to the reformer as fuel.2. The method of claim 1 , further comprising preheating the COG stream in a preheater prior to providing the COG stream to the reformer as fuel.3. The method of claim 2 , further comprising providing a portion of the preheated COG stream to the direct reduction shaft furnace as one or more of bustle gas and transition zone gas.4. The method of claim 3 , further comprising adding oxygen to the bustle gas.5. The method of claim 2 , further comprising firing the preheater with a portion of the top gas stream.6. The method of claim 2 , further comprising preheating the COG stream in the preheater using waste heat from the reformer.7. The method of claim 2 , further comprising venting one or more of carbon dioxide and nitrogen through the preheater.8. The method of claim 1 , further comprising venting one or more of carbon dioxide and nitrogen from the reformer.9. A method for reducing iron oxide to metallic iron using coke oven gas (COG) claim 1 , comprising:providing a top gas stream from a direct reduction shaft furnace;removing carbon dioxide from the top gas stream using a carbon dioxide removal unit;heating the top gas stream in a gas heater to form a reducing gas stream and providing the ...

Method for the Commercial Production of Iron

A method for the production of iron from an iron oxide-containing material includes contacting an iron oxide-containing material with a particle size distribution range with a ∂of less than 2 mm, with a carbon-containing material with a particle size distribution range with a ∂of less than 6 mm, in a commercial scale reactor at a temperature of between 900° C. and 1200° C. for a contact time sufficient to reduce the iron oxide to iron. 1. A method for the production of iron from an iron oxide-containing material , the method including{'sup': 90', '90, 'feeding a pre-determined quantity of an iron oxide-containing material with a particle size distribution range with a ∂of less than 2 mm and a predetermined quantity of an excess of carbon-containing material with a particle size distribution range with a ∂of less than 6 mm, into an inclined, externally heated rotating cylindrical reactor or rotary kiln capable of routinely producing at least 1000 kg/h of iron;'}{'sup': '−1', 'contacting the iron-oxide-containing material and the carbon-containing material in the externally heated rotating cylindrical reactor or rotary kiln at a temperature of between 900° C. and 1200° C. for a contact time of between 30 minutes and 360 minutes to reduce the iron oxide to iron powder, the feed rates of the iron oxide-containing material and the carbon-containing material and the operating temperature of the reactor being selected so that a superficial gas flow rate through the reactor caused by the release of gases resulting from the reduction is less than 2 ms; and'}magnetically separating product iron powder from excess carbon-containing material.2. The method as claimed in claim 1 , in which the iron oxide-containing material has a ∂of less than 1 mm.3. The method as claimed in claim 2 , in which the iron oxide-containing material has a ∂of less than 500 μm.4. The method as claimed in claim 1 , in which the carbon-containing material has a ∂of less than 2 mm.5. The method as ...

IRON REDUCTION PROCESS AND EQUIPMENT

An iron production furnace equipment () has a melting reactor () into which iron oxide-containing raw material () and slag formers () are added. A melter arrangement () melts the iron oxide-containing raw material and transforms the melted raw material into liquid slag () A smelting reduction reactor () is connected to the melting reactor by a slag transfer arrangement (). The smelting reduction reactor comprises a heater arrangement () for heating the slag. Means () for supplying a reductant () for reducing the iron oxide in the slag into a liquid iron melt () and for producing a combustible gas mixture () comprising at least one of CO and H. A gas connection () is connected between the smelting reduction reactor and the melter arrangement. The melter arrangement in turn comprises a combuster () combusting the gas mixture. The combustion heat is used for purpose of melting. 1. A method for manufacturing of iron , having: introducing an iron oxide-containing raw material and slag formers to a melting reactor;', 'melting said iron oxide-containing raw material in said melting reactor; and', 'transforming said melted iron oxide-containing raw material into a liquid slag; and, 'a melting stage, comprising the steps of transferring said liquid slag into a smelting reduction reactor;', 'heating said liquid slag in said smelting reduction reactor;', 'supplying a reducing agent to said smelting reduction reactor;', 'reducing said liquid slag in said smelting reduction reactor into a liquid iron melt; and', {'sub': '2', 'producing a combustible gas mixture in said smelting reduction reactor comprising at least one of CO and H;'}], 'a smelting reduction stage, comprising the steps of{'sub': '2', 'said step of melting in turn comprising combustion of at least a part of at least one of CO and Hin said combustible gas mixture in or in connection with said melting reactor, for utilizing generated combustion heat for said melting.'}2. The method according to claim 1 , wherein ...

METHOD FOR MANUFACTURING ARTIFICIAL GRAPHITE ELECTRODE

The present invention provides a method for producing an artificial graphite electrode that enables kneading and subsequent mixing to be carried out without having to increase an amount of binder pitch used even in the case of needle coke having a large pore volume. An artificial graphite electrode is produced by kneading binder pitch with needle coke, and performing extrusion molding and then performing baking and graphitization process on the same, wherein a process for kneading the binder pitch with needle coke includes at least two separate kneading stages, and the amount of binder pitch added and kneading time in these kneading stages satisfy a kneading index as represented by formula (1) below within a range of 0.1 to 0.7. 1. A method for producing an artificial graphite electrode by kneading binder pitch with needle coke , and then performing extrusion molding and performing baking and graphitization process on the same , wherein{'sup': '3', 'the needle coke has a real density of 2.00 g/cmor higher and pore volume of 0.10 cc/g to 0.30 cc/g over a pore diameter of 0.01 μm to 120 μm,'}a process for kneading the binder pitch with needle coke includes at least two separate kneading stages, and {'br': None, 'i': a', '/A', 't', '/T, 'Kneading index=(1)×(1) \u2003\u2003(1)'}, 'the amount of binder pitch added and kneading time in these kneading stages satisfy a kneading index as represented by formula (1) below within a range of 0.1 to 0.7{'b': 1', '1, 'where, A indicates a total amount of binder pitch used in the kneading process, a indicates the amount of binder pitch used in the first kneading stage, T indicates a total kneading time of the kneading process and t indicates the kneading time of the first kneading stage.'}2. (canceled)3. The method for producing an artificial graphite electrode according to claim 1 , wherein the binder pitch has a softening point of 70° C. to 150° C. and a β-resin content of 15 wt % to 30 wt %.4. The method for producing an ...

METHOD AND DEVICE FOR PRODUCING DIRECT REDUCED METAL

Method for producing direct reduced metal material, comprising the steps: a) charging metal material to be reduced into a first furnace space () of a first furnace (); b) evacuating an existing atmosphere from the first furnace space () so as to achieve an underpressure; c) providing, in a main heating step, heat and first hydrogen gas to the first furnace space (), so that metal oxides present in the metal material are reduced, in turn causing water vapour to be formed; and d) condensing and collecting the water vapour formed in step c in a condenser () below the charged metal material. The first hydrogen gas in step c is provided without recirculation of the first hydrogen gas, the method further comprises a subsequently performed charged material cooling step, in which thermal energy from the charged material is absorbed by said first hydrogen gas, and in which thermal energy, by heat exchange, is transferred from said first hydrogen gas to second hydrogen gas to be used in a second furnace () for producing direct reduced metal material. The invention also relates to a system.

PROCESS AND APPARATUS FOR DIRECT REDUCTION WITH ELECTRICALLY HEATED-UP REDUCTION GAS

Process for the direct reduction of metal oxides () using a reduction gas, which is based on at least one precursor gas, wherein at least one precursor gas () is based on reformer gas obtained by catalytic reforming of hydrocarbon-containing gas () in a reformer (), and in the preparation of the reduction gas at least one precursor gas based on reformer gas is heated up by means of electrical energy. An apparatus for the direct reduction () of metal oxides () by means of a reduction gas comprises a catalytic reformer () for producing a reformer gas, a reformer gas line () for removing reformer gas from the catalytic reformer (), a reduction unit (), a reduction gas line () for introducing reduction gas into the reduction unit (), and at least one precursor gas line (), wherein at least one precursor gas line extending from the reformer gas line comprises an electrical gas heating device (), and at least one precursor gas line () extends from the reformer gas line (), and each precursor gas line () opens out into the reduction gas line (). 1. A method of direct reduction of metal oxides using a reduction gas based on at least one precursor gas ,wherein the at least one precursor gas is based on reformer gas obtained by catalytic reforming of hydrocarbonaceous gas in a reformer,preparation of the reduction gas involves heating the at least one precursor gas based on reformer gas, and optionally additionally also heating one or more further precursor gases, by means of electrical energy, wherein the one or more further precursor gases optionally comprises the at least one precursor gas or another precursor gas,wherein at least a portion of the electrical energy is introduced by means of plasma.2. The method as claimed in claim 1 , wherein the at least one precursor gas based on the reformer gas is heated by the electrical energy to a temperature within a range of up to 200° C. above an exit temperature from the reformer.3. The method as claimed in claim 2 , wherein the ...

Apparatus for making liquid iron and steel

A metallizing apparatus which is carbonaceous-based wherein a metallic oxide is converted into a carbon-containing, metallized intermediate that is melted in an induction channel furnace to produce liquid metal from said metallic oxide. In the application of iron ore in the form of fines or concentrate, using low-cost coal will greatly reduce capital and operating costs by virtue of eliminating agglomeration of ore, cokemaking, and blast furnace operation. The liquid iron so produced is efficiently converted into steel in a steelmaking furnace such as a basic oxygen furnace (BOF), especially when it is physically integrated to the induction channel furnace wherein the liquid iron is directly poured into the integrated BOF by the induction channel furnace, producing low-cost steel, little heat loss, and minimum emissions.

Green process for the preparation of pure iron

The present invention relates to an eco-friendly and single step process for the preparation of high purity iron by using hydrogen plasma in a suitable smelting reactor furnace. Reduction of iron oxide in excess of 99% can be achieved by reducing the iron ore in hydrogen plasma smelting system. The product quality is greatly improved as there is no instance of coke inclusion which otherwise would have carried carbon, sulphur, phosphorous, silica, etc. with it. In addition, this greatly diminishes carbon dioxide emission thereby making the process highly eco-friendly in nature. Apart from these, the process produces water as the only by-product. The process takes care of the green house effect with the non-involvement of gases like carbon dioxide, carbon monoxide during the operation. Thus, the present process is developed to produce high pure iron in a hydrogen plasma reactor without using carbon as reductant which thereby reduces the carbon dioxide emission drastically.

Process for direct reduction of iron oxide

A process for direct reduction of iron oxide in a shaft furnace. The furnace has a pre-reduction zone near its uppermost portion, a metallization zone below the pre-reduction zone, an intermediate zone which separates the pre-reduction zone from the metallization zone and which includes a restriction to inhibit rich fuel gas from passing from the pre-reduction zone to the metallization zone, and a cooling zone below the metallization zone at the lowest portion of the furnace. The process includes feeding iron oxide to the furnace, passing the iron oxide successively downwardly through the pre-reduction zone, the transition zone, the metallization zone, and the cooling zone while passing rich fuel gas produced by external partial combustion with a sub-stoichiometric volume of air upwardly through the pre-reduction zone in counter-current flow so as to partially reduce the iron oxide, and passing reducing gas downwardly through the metallization zone in co-current flow so as to substantially complete the reduction of the iron oxide to metallic iron. The reducing gas is first pre-heated in a gas heater and then subjected to partial combustion with oxygen to further increase its temperature. The process includes removing a metallized iron product from the cooling zone.

METHOD OF MANUFACTURING METAL POWDERS AND APPARATUS FOR MANUFACTURING METAL POWDERS REALIZING THE SAME

In a method of manufacturing metal powders in a continuous type, metal is heated at a temperature greater than a melting point to form a liquid phase metal, and the liquid phase metal and an emulsion carrier, which is emulsified without reacting with the liquid phase metal, are supplied into a container, and the liquid phase metal and the emulsion carrier are emulsified through Taylor flow to form an emulsion solution. The emulsion solution is discharged from the container, and then, the emulsion solution is cooled at a temperature smaller than the melting point to selectively solidifying the liquid phase metal in the emulsion solution to form the metal powders. 1. An apparatus for manufacturing metal powders of a continuous type , comprising:an emulsion part including a container forming an emulsion solution by emulsifying a liquid phase metal and an emulsion carrier, which is emulsified without reacting with the liquid phase metal, through the Taylor flow;a supply part disposed on one side of the container, and independently supplying the liquid phase metal and the emulsion carrier into the container;a discharge part disposed on another side of the container, and discharging the emulsion solution from the container; anda separate part coupled with the discharge part, and cooling the emulsion solution at a temperature smaller than the melting point of the liquid phase metal to selectively solidify the liquid phase metal in the emulsion solution to separate the metal powders from the emulsion solution.2. The apparatus for manufacturing the metal powders of the continuous type of claim 1 , wherein the emulsion part is disposed inside the container claim 1 , and includes a tumbling barrel configured to rotate to apply a centrifugal force and Coriolis force to the liquid phase metal and the emulsion carrier.3. The apparatus for manufacturing the metal powders of the continuous type of claim 2 , wherein the emulsion part controls an interval between the container and ...

DIRECT REDUCED IRON (DRI) HEAT TREATMENT, PRODUCTS FORMED THEREFROM, AND USE THEREOF

Heat treatment of DRI is performed in order to form a DRI product with a metallic shell around at least a portion of the DRI. The heat treatment may be delivered through the use of a plasma torch, a gas burner, an oven, or any other like heat source. The heat treatment may heat the DRI for a fraction of a second and quickly cool the DRI in order to melt the surface and form the metallic shell without vaporizing a significant portion of the DRI and without losing a significant amount of the latent energy in the DRI. During storage and transport of the DRI product, the DRI product is less likely to fracture, the DRI product has less exposed surface area of DRI, and results in reduced DRI fines and/or DRI dust cause by the DRI product rubbing together when compared to traditional types of DRI. 1. A method of forming a direct reduced iron (DRI) product , comprising:heating DRI at a temperature for a time to melt at least a portion of an outer surface of the DRI; andwherein the heating results in the DRI product having a DRI core and a metallic outer shell formed around at least the portion of the outer surface of the DRI core.2. The method of claim 1 , further comprising direct reducing iron ore using a reducing gas or carbon source to form the DRI.3. The method of claim 1 , wherein the heating comprises passing the DRI through a heat source claim 1 , wherein a temperature of the heating ranges between 440 degrees Fahrenheit to 20 claim 1 ,000 degrees Fahrenheit.4. The method of claim 3 , wherein passing the DRI through the heat source comprises dropping the DRI and using gravity claim 3 , or providing a motive force.5. The method of claim 1 , wherein the heating is performed through a plasma torch.6. The method of claim 1 , wherein the heating is performed by passing the DRI through a gas burner claim 1 , an oven claim 1 , or any other conductive or radiant heat source.7. The method of claim 1 , wherein the time exposed to the temperature ranges from 0.05 to 5 seconds. ...

Direct reduction process utilizing hydrogen

A direct reduction method/system, including: adding variable amounts of natural gas, hydrogen, and a carbon-free oxidizing gas to a feed gas stream upstream of a reformer; reforming the feed gas stream in the reformer to form a reformed gas stream, and delivering the reformed gas stream to a shaft furnace, where the reformed gas stream is used to reduce a metallic ore material to a direct reduced metallic material. The feed gas stream includes a top gas stream recycled from the shaft furnace. Optionally, the carbon-free oxidizing gas includes steam and the method further includes controlling a steam flow rate of the steam to maintain a maximum k-factor value of the feed gas stream of 0.74 or lower. Optionally, the variable amount of hydrogen is selected to replace 20-90% of the natural gas by fuel value. The variable amount of hydrogen is selected based upon an available supply of hydrogen.

Method for operating a metallurgical furnace

A method for operating a metallurgical furnace and a simplified way of providing synthesis gas for a metallurgical furnace, includes the following steps performing a combustion process outside the metallurgical furnace by combusting a carbon-containing material with an oxygen-rich gas to produce an offgas, which offgas is a CO 2 containing gas; and combining the offgas, while having an elevated combustion-induced temperature due to the combustion process, with a hydrocarbon-containing fuel gas to obtain a first gas mixture having a temperature above a reforming temperature necessary for a reforming process, preferably a dry reforming process; the first gas mixture undergoing the reforming process, thereby producing a synthesis gas containing CO and H 2 , the reforming process being performed non-catalytically; and feeding the synthesis gas into the metallurgical furnace.

Products and processes for producing steel alloys using an electric arc furnace

Feedstock for steel production in an arc furnace comprising a first influent comprised of cured and bound solid pieces comprised of a mixture of carbon materials, including a dominate amount of low grade coal, and a second influent comprised of ferrous material comprising scrap iron and/or steel for full reaction with the carbon material to produce the alloy. 1. A method of making one or more secondary steel products in an electric arc furnace comprising the acts of:preparing blended, cured and bound solid soft carbon pieces as an influent into the electric arc furnace, the solid pieces comprising carbon material principally comprises of low value coal particles, coke breeze and/or petroleum coke and a carbon fixing binder;providing ferrous material;introducing the soft carbon solid pieces and the ferrous material into the electric arc furnace;heat-processing the solid pieces and the ferrous material to obtain the one or more secondary steel products therefrom.2. A method according to further comprising the act of causing the blended claim 1 , cured and bound solid soft carbon pieces to comprise discarded revert material.3. In combination:solid blended, cured and bound soft carbon solid pieces comprising of carbon materials for use in an electric arc furnace by which a steel alloy is obtained;the carbon materials predominantly comprising low value coal particles and also comprising a non-dominate amount of coke breeze and/or petroleum coke;ferrous material for use in the electric arc furnace with the solid pieces;the solid pieces further comprising by a carbon fixing binder.4. A combination according to wherein the solid pieces comprise claim 3 , by weight claim 3 , the following characteristics: moisture not to exceed 2.5%; sulfur not to exceed 2.0%; volatile residue not to exceed 2.5%; ash not to exceed 8.0%; and carbon not less than 85.0%.5. A combination according to wherein the solid pieces further comprising leftover revert materials from at least one blast ...

ON-LINE ALUMINUM SCRAP REMELTING DEVICE AND PROCESS

The present application discloses an on-line aluminum scrap remelting device, comprising an aluminum scrap conveying device, a primary aluminum scrap purification device, a remote aluminum scrap transport device, an ultimate aluminum scrap purification device, and a feed remelting device. The application further discloses an on-line aluminum scrap remelting process, comprises machined scrap removal, underground aluminum scrap transport collection, temporary storage, crushing, spin-drying, remote transport, secondary magnetic separation, drying, weighing, remelting, tempering, and use. 1. An on-line aluminum scrap remelting device , comprising an aluminum scrap conveying device , a primary aluminum scrap purification device , a remote aluminum scrap transport device , an ultimate aluminum scrap purification device , and a feed remelting device , whereinthe aluminum scrap conveying device indicates that a trench is arranged around a machining area, the aluminum scrap conveying device is arranged in the trench, each machining lathe scrap discharging machine is directly connected to the aluminum scrap conveying device, a temporary storage tank is arranged at the tail end of the aluminum scrap conveying device, and aluminum scraps are temporarily stored in the temporary storage tank;the primary aluminum scrap purification device comprises an aluminum scrap crushing device, a spin dryer, a first scrap hoist and a second scrap hoist, wherein the aluminum scrap crushing device comprises a primary coarse magnetic separator and an aluminum scrap crusher, a discharge port of the primary coarse magnetic separator is connected to a feed port of the aluminum scrap crusher, the first scrap hoist is arranged between the temporary storage tank and the aluminum scrap crushing device, a discharge port of the temporary storage tank is correspondingly connected to a feed port at the lower end of the first scrap hoist, and a discharge port at the upper end of the first scrap hoist is ...

ELECTRIC FURNACE AND METHOD FOR MELTING AND REDUCING IRON OXIDE-CONTAINING IRON RAW MATERIAL

This electric furnace includes one or more upper electrodes, one or more bottom-blowing tuyeres, a mechanical stirrer equipped with an impeller, and a charging device which injects an iron oxide-containing iron raw material. 1. An electric furnace comprising:one or more upper electrodes;one or more bottom-blowing tuyeres;a mechanical stirrer equipped with an impeller; anda charging device which injects an iron oxide-containing iron raw material.2. The electric furnace according to claim 1 , comprising:three or more of the bottom-blowing tuyeres; anda plurality of the upper electrodes,wherein, when a straight line orthogonal to a shortest line segment of individual line segments connecting centers of the upper electrodes and a center of the impeller is drawn at a point closer to the impeller between two points that equally divide the shortest line segment into three parts in a plan view,centers of at least three bottom-blowing tuyeres among the respective bottom-blowing tuyeres are present closer to the respective upper electrodes than the orthogonal straight line.3. The electric furnace according to claim 2 ,wherein, in the plan view, centers of all of the respective upper electrodes and a raw material injection opening of the charging device is present inside a polygonal shape connecting the respective centers of the three or more bottom-blowing tuyeres present closer to the respective upper electrodes than the orthogonal straight line.4. A method for melting and reducing an iron oxide-containing iron raw material in which the electric furnace according to is used claim 1 , the method comprising:when the iron oxide-containing iron raw material having an iron metallization percentage of 45% or more and 95% or less is charged from the charging device and melted and reduced in the electric furnace in which molten metal is present, immersing and rotating the impeller of the mechanical stirrer in the molten metal, thereby stirring slag present on a surface of the molten ...

SMELTING METHOD FOR METALLURGICAL ELECTRIC-FURNACE

The present disclosure provides a metallurgical electric furnace, and a smelting method for the metallurgical electric furnace. The metallurgical electric furnace includes a furnace body, an oxygen lance and a coal lance, wherein the furnace body is provided with a furnace chamber; the oxygen lance is located on a side wall of the furnace chamber and is used for blowing oxygen into the slag promoting the smelting process, and the outlet of the oxygen lance is higher than the slag; and the coal lance is located on the side wall of the furnace chamber beside the oxygen lance and is used for spraying coal into the slag, and the outlet of the coal lance is higher than the slag. 1. A metallurgical electric furnace , comprising:a furnace body provided with a furnace chamber;an oxygen lance located on a side wall of the furnace chamber and used for blowing oxygen into slag promoting the smelting process, wherein the outlet of the oxygen lance is higher than the slag; anda coal lance located on the side wall of the furnace chamber beside the oxygen lance and used for injecting coal particles into the slag, wherein the outlet of the coal lance is higher than the slag.2. The metallurgical electric furnace according to claim 1 , comprising:a plurality of oxygen lances that are uniformly distributed along the side wall of the furnace chamber; andan equal number of coal lances that are uniformly distributed along the side wall of the furnace chamber,wherein the oxygen lances are located below the coal lances, or the oxygen lances and the coal lances are located at the same height on the side wall of the furnace chamber.3. The metallurgical electric furnace according to claim 1 , further comprising:a spray tube located on the side wall of the furnace chamber and used for spraying a hydrocarbon into a furnace freeboard, wherein the outlet of the spray tube is higher than the slag.4. The metallurgical electric furnace according to claim 3 , whereinthe spraying direction of the ...

METHOD AND SYSTEM FOR PRODUCING PIG IRON OR FLUID STEEL PRE-PRODUCTS

A method and a plant for the production of pig iron or liquid steel semi-finished products are shown, metal oxide-containing batch materials and, if appropriate, aggregates being at least partially reduced in a reduction zone by a reduction gas, subsequently being introduced into a smelting zone and being smelted along with the supply of carbon carriers and oxygen-containing gas and along with the formation of the reduction gas. The reduction gas formed in the smelting zone is supplied to the reduction zone, reacted there and drawn off as export gas, COis separated from the export gas, and a product gas is formed which is utilized for the introduction of pulverulent carbon carriers into the smelting zone. 1. A plant for the production of pig iron or liquid steel semi-finished products , with a reduction assembly , in which metal-containing batch materials and , if appropriate , aggregates can be at least partially reduced by means of a reduction gas , and with a smelting assembly , into which the at least partially reduced batch materials or the aggregates can be introduced and smelted along with the supply of carbon carriers and oxygen-containing gas and along with the formation of the reduction gas , the formed reduction gas being capable of being supplied to the reduction assembly , reacted there and drawn off , if appropriate after purification , as export gas , wherein a COseparation device for separating COfrom the export gas and for forming a product gas is provided , the product gas being connected via a product gas line to at least one introduction device for the introduction or injection , of pulverulent carbon carriers into the smelting assembly , wherein the introduction device has at least one mixing chamber for mixing the product gas with pulverulent carbon carriers and conveying gas , the mixing chamber being connected to the product gas line and to a conveying line for the inward conveyance of the pulverulent carbon carriers.2. The plant according to ...

ROTARY BED-TYPE ELECTRIC FURNACE

A rotary bed-type electric furnace includes a rotary bed configured to carry material, and a rotator configured to rotate the rotary bed so that material carried on the rotary bed passes through peripheral zones of the rotary bed-type electric furnace. The peripheral zones include a feeding zone configured to receive material on the rotary bed, a drying zone configured to dry and heat material by means of electrical energy, a heating zone configured to heat material by means of electrical energy, a cooling zone configured to lower the temperature of the material and configured to release gases from the material, and a discharging zone configured to discharge material from the rotary bed of the furnace. 119.-. (canceled)20. A rotary bed-type electric furnace , comprising:a rotary bed configured to carry material, anda rotator configured to rotate the rotary bed so that material carried on the rotary bed passes through peripheral zones of the rotary bed-type electric furnace, wherein the peripheral zones comprise:a feeding zone configured to receive material on the rotary bed of the rotary bed-type electric furnace,a drying zone configured to receive material from the feeding zone and configured to dry and heat material by means of electrical energy to a temperature between 50 and 300° C.,a heating zone configured to receive material from the drying zone and configured to heat material by means of electrical energy to a temperature between 300 and 700° C.,a cooling zone configured to receive material from the heating zone and configured lower the temperature of the material and configured to release gases from the material, anda discharging zone configured to receive material from the cooling zone and configured to discharge material from the rotary bed of the furnace,the drying zone being covered by a first section hood configured to prevent gases from escaping from the drying zone,the heating zone being covered by a second hood section configured to prevent gases ...

Method and apparatus for the production of cast iron, cast iron produced according to said method

A method for the production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace includes the steps of preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of the carbon is combined with the iron to form iron carbide FeC; charging the charge of pre-reduced iron ore into the electric arc furnace; and melting the DRI charge to form liquid cast iron having at least 80% by weight of actual carbon content deriving from the carbon in the charge of pre-reduced iron ore, the melting step being in a reducing atmosphere and in a melting chamber of the electric arc furnace subjected to a positive internal pressure generated by the gases produced by reduction reactions that develop during melting. 1. A method for production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace (EAF) , comprising the following steps:{'sub': '3', 'a. preparing a charge of the pre-reduced iron ore (DRI) having a metallization higher than 90% and containing up to 6.5% by weight of carbon, wherein at least 80% of said carbon is combined with iron to form iron carbide (FeC);'}b. charging the charge of the pre-reduced iron ore (DRI) into the electric arc furnace (EAF) without adding free carbon; andc. melting the DRI charge to form liquid cast iron,wherein said liquid cast iron has a predetermined actual content of carbon, at least 80% by weight of said actual carbon content of the liquid cast iron deriving from the carbon in the charge of the pre-reduced iron ore (DRI), andwherein step c. is carried out in a reducing atmosphere and in a melting chamber of the electric arc furnace (EAF) subjected to a positive internal pressure generated by gases produced by reduction reactions that develop in step c.2. The method according to claim 1 , wherein at least 90% of said carbon in the charge of the pre-reduced iron ore (DRI) is combined with iron as ...

OXYGEN BOOSTING AND NATURAL GAS REPLACEMENT OF COKE IN CUPOLAS

A cupola furnace includes at least one tuyere opening into an interior of the cupola; and at least one oxygen stream and at least one natural gas (NG) stream in fluid communication with said at least one tuyere for providing oxygen and NG to the cupola furnace interior. A related method is also provided for heating a cupola furnace, and includes introducing at least one oxygen stream and at least one NG stream into the cupola furnace for reaction therein. 1. A cupola furnace , comprising:at least one tuyere opening into an interior of the cupola furnace; andat least one oxygen stream and at least one natural gas (NG) stream in fluid communication with said at least one tuyere for providing oxygen and NG to the interior of the cupola furnace.2. The cupola furnace of claim 1 , further comprising at least one oxygen lance through which the at least one oxygen stream may pass claim 1 , and at least one natural gas lance through which the at least one NG stream may pass.3. The cupola furnace of claim 2 , wherein the at least one NG lance extends through the at least one tuyere to an opening for said cupola interior for delivering the NG thereto.4. The cupola furnace of claim 2 , wherein the at least one oxygen lance and the at least one NG lance extend through the at least one tuyere to the cupola interior.5. The cupola furnace of claim 2 , wherein the cupola furnace comprises a plurality of tuyeres claim 2 , each one of said plurality of tuyeres comprising said at least one oxygen lance and said at least one natural gas lance in fluid communication with one of said plurality of tuyeres.6. The cupola furnace of claim 2 , wherein the cupola furnace comprises a plurality of tuyeres claim 2 , and only a portion of said plurality of tuyeres have at least one oxygen lance and at least one natural gas lance.7. The cupola furnace of claim 2 , wherein the cupola furnace comprises an air inlet for introducing an air stream into said at least one tuyere claim 2 , and said at least ...

REDUCED IRON MANUFACTURING METHOD

The reduced iron manufacturing method of the present invention includes preparing an agglomerate by agglomerating a mixture containing an iron oxide-containing substance and a carbonaceous reducing agent, and preparing reduced iron by heating the agglomerate to reduce iron oxide in the agglomerate, characterized in that Expression (I) as follows is satisfied: 1. A reduced iron manufacturing method , the method comprising:agglomerating a mixture comprising an iron oxide-containing substance and a carbonaceous reducing agent, to obtain an agglomerate, andheating the agglomerate to reduce iron oxide in the agglomerate, to obtain a reduced iron, {'br': None, 'sub': fix', 'under105', 'FeO, 'i': '×X', 'C/O≤51\u2003\u2003(I)'}, 'wherein Expression (I) as follows is satisfied{'sub': FeO', 'fix', 'under105, 'where Ois mass percentage of oxygen contained in the iron oxide in the agglomerate, Cis mass percentage of total fixed carbon contained in the agglomerate, and Xis mass percentage of particles having a particle diameter of 105 μm or less with respect to total mass of particles configuring the carbonaceous reducing agent.'}2. The method according to claim 1 , wherein the Xis 1 mass % or more to 65 mass % or less.3. The method according to claim 1 , wherein a mass percentage of particles having a particle diameter of 120 μm or more to 250 μm or less with respect to a total mass of particles configuring the carbonaceous reducing agent is 30 mass % or more to 80 mass % or less. The present invention relates to a method for manufacturing reduced iron by heating an agglomerate containing an iron oxide source such as iron ore (which may hereafter be referred to as “iron oxide-containing substance”) and a carbonaceous reducing agent containing carbon such as coal, so as to reduce iron oxide in the agglomerate.The direct reduction iron-making method is developed as a method for manufacturing reduced iron by reducing iron oxide contained in an iron oxide-containing substance.For ...

FOAMY SLAG CONDITIONER COMPOUND

A compound for forming a foamy slag layer for use in an electric arc furnace, is described. The electric arc furnace has a chamber for melting scrap steel and an opening for introducing material into the chamber. The compound has un-calcined dolomite ore having a weight percentage from about 10% to about 60% and carbon having a weight percentage from about 40% to about 90%. The un-caicined dolomite ore and carbon are introduced to the chamber of the electric arc furnace while the scrap steel is being melted to form a foamy slag layer on the surface of the molten steel. 1. A slag conditioner compound for forming a foamy slag layer for use in an electric arc furnace for making steel , the electric arc furnace having a chamber for melting scrap steel and an opening for introducing material into the chamber comprising.an un-calcined dolomite ore having a weight percentage from about 10% to about 60%; andcarbon having a weight percentage from about 40% to about 90%. the un-calcined dolomite ore and carbon being introduced to the chamber while the scrap steel is being melted to form a foamy slag on the surface of the molten steel.2. The compound of wherein the carbon is selected from the group comprising petroleum coke claim 1 , graphite claim 1 , and anthracite coal claim 1 , metallurgical coke and mixtures or blends of these materials.3. The compound of wherein the un-calcined dolomite ore and the carbon are mixed together and supplied to the chamber of the electric arc furnace as a single mixture.4. The compound of wherein the un-calcined dolomite ore and the carbon are supplied to the chamber of the electric arc furnace separately.5. The compound of wherein the un-calcined dolomite ore has a weight percent of CaCOfrom about 45% to about 65% and a weight percent of MgCOfrom about 35% to about 55%.6. The compound of wherein the un-caicined dolomite ore has a weight percentage from about 15% to about 30%.7. The compound of wherein the compound has a moisture content of ...

Method for ironmaking by smelting reduction in stir-generated vortex

A method for ironmaking by smelting reduction in a stir-generated vortex includes: (1) placing a pig iron in an induction furnace, and then heating the pig iron to a molten state to form a molten iron, and maintaining the molten iron to be greater than or equal to 1450° C.; (2) stirring a center of the molten iron to form a vortex with a height-to-diameter ratio of 0.5-2.5, and continuously performing stirring; (3) mixing and grinding on an iron-containing mineral, a reducing agent and a slag-forming agent in a mass ratio of 1:(0.1-0.15):(0.25-0.4) to obtain a powder mixture, spraying and blowing the powder mixture to a center of the vortex, performing a reduction reaction, and stopping the stirring after the molten iron and molten slags are obtained, wherein a waste gas is produced; and (4) discharging the molten iron and the molten slags respectively, and exhausting a treated waste gas.

Production of Iron

A process for direct reduction of iron ore in a solid state is disclosed. The process operates under anoxic conditions with biomass as a reductant and with electromagnetic energy as a source of heat. 1. A continuous process for direct reduction of iron ore in a solid state includes transporting iron ore and biomass through a preheating chamber and preheating iron ore and biomass as iron ore and biomass move through the chamber; transporting preheated iron ore and biomass through a heating/reduction chamber that has an anoxic environment and exposing iron ore and biomass to electromagnetic energy with iron ore and biomass in contact under anoxic conditions and electromagnetic energy generating heat within iron ore , and biomass acting as a reductant and reducing iron ore in a solid state , as iron ore and biomass move through the chamber.2. The process defined in includes electromagnetic energy generating heat within the biomass.3. The process defined in includes controlling process operating conditions so that iron ore is heated to a temperature in a range at which there is metallisation of iron ore.4. The process defined in includes claim 3 , in the case of hematite claim 3 , controlling process operating conditions so that iron ore is heated to a temperature in a range of 800-950° C. for metallisation of the hematite.5. The process defined in includes controlling process operating conditions so that iron ore is reduced to a required degree of metallisation and forms a solid state metallic iron product.6. The process defined in includes preheating iron ore and biomass to a temperature in a range of 400-900° C.7. The process defined in wherein iron ore and biomass are in the form of a blend of iron ore fragments and biomass.8. The process defined in wherein iron ore and biomass are in the form of briquettes of iron ore fragments and biomass.9. (canceled)10. The process defined in wherein the briquettes have a major dimension of 1-10 cm claim 8 , typically 2-10 cm ...

METHOD FOR RECOVERING VALUABLE METALS

Provided is a method in which, when discarded batteries such as lithium-ion batteries are treated by a dry process, slag having a reduced viscosity is obtained to heighten the recovery of valuable metals. The method for recovering valuable metals includes a dry process (S) which includes a melting step (ST), a slag separation step (ST), and an alloy separation step (ST), the slag having an aluminum oxide content of 5 mass % or higher but less than 20 mass % and an iron content in terms of metallic iron amount of 20-40 mass %. Furthermore, silicon oxide and calcium oxide are added as a flux in the melting step (ST) so that the slag has a melting point of 1,400° C. or lower, and the melting step (ST) is conducted at 1,400° C. or lower. Thus the recovery of the alloys can be heightened. 1. A method for recovering valuable metals from waste batteries containing aluminum and iron , the method comprising:a melting step of melting the waste batteries and thereby obtaining a melt;a slag separation step of separating slag from the melt; andan alloy separation step of separating an alloy of valuable metals from the melt, whereinin the melting step, silicon dioxide and calcium oxide are added as fluxes,the content of aluminum oxide in the slag is more than or equal to 5% by mass and less than 20% by mass, and the content of iron in terms of metallic iron is from 20% by mass to 40% by mass, andthe melting step is carried out at a temperature of 1400° C. or lower.2. The method for recovering valuable metals according to claim 1 , wherein claim 1 , in the melting step claim 1 , the content of iron in the slag is adjusted from 20% by mass to 40% by mass by externally adding iron to the melt.3. The method for recovering valuable metals according to claim 1 , wherein the mass ratio of silicon dioxide/calcium oxide in the slag is in the range of from 0.5 to 2.4. The method for recovering valuable metals according to claim 1 , wherein the melting step is carried out in an electric ...

PRODUCTION OF PIG IRON

A method for producing pig iron by direct processing of iron-containing materials such as iron-containing sands, in which the iron-containing materials and carbonaceous reductant are mixed with a fluxing agent to form a mixture; briquettes or agglomerates are formed from the mixture; at least a portion of the agglomerates are preheated to a temperature of 750 to 1200° C. and are pre-reduced, then the preheated, pre-reduced agglomerates are introduced into the melting furnace; the agglomerates are melted at a temperature of from 1300 to 1760° C. and form hot metal with a slag thereon; the slag is removed and the hot metal is tapped as pig iron, and the off-gas from the smelter is used to operate a preheater for the agglomerates. 1. A process for producing pig iron by direct processing of iron-containing materials , comprising the steps of:a. mixing iron-containing materials, carbonaceous reductant, and a fluxing agent to form a mixture;b. forming agglomerates from said mixture;c. introducing a portion of said agglomerates to an electric melting furnace as cold charge;d. preheating and pre-reducing at least a portion of said agglomerates to a temperature of 750 to 1200° C., and introducing said preheated agglomerated to the melting furnace;e. melting the agglomerates at a temperature of from 1300 to 1760° C. and forming hot metal with a slag thereon;f. removing the slag;g. tapping the hot metal as pig iron, andh. recovering the heating value from the off-gas from the smelter.2. A process according to claim 1 , further comprising screening the iron-containing materials to pass 80 mesh Tyler Standard.3. A process according to wherein said iron-bearing materials are iron sands.4. A process according to claim 1 , further comprising introducing a binder into said mixture.5. A process according to claim 1 , further comprising preventing substantially all air ingress to the melting furnace by providing a pressure seal.6. A process according to claim 1 , further comprising ...

Process for Carbothermic or Electrothermic Production of Crude Iron or Base Products

A process serves for the carbothermic/electrothermic production of crude iron or other base products in furnaces () by using mixtures comprising iron ore, oxides and/or carbonates of calcium (A) and carbonaceous materials, with formation of carbon monoxide-containing gases. In order to provide a novel process having an increased level of energy efficiency which provides high quality grade synthesis gas, it is proposed that the iron ore and/or the oxides and/or carbonates of calcium are, in whole or in part, first used as bulk material together with organic materials () in an upstream vertical moving-bed reactor () constructed as a counterflow gasifier, which moving-bed reactor has a bulk material at least in part comprising alkaline substances as moving bed, and a reduction () and oxidation zone (), the organic materials are in whole or in part converted to synthesis gas () by gasification with oxygen-containing gases () and the remaining bulk material () is at least in part provided as raw material mixture for the carbothermic production of crude iron or electrothermic production of base products. 1. A process for carbothermic/electrothermic production of crude iron or other primary products in blast furnaces or electric low shaft furnaces by using mixtures comprising iron ore , oxides and/or carbonates of calcium (A) and carbon-containing materials , forming carbon monoxide-containing gases , characterized in that the iron ore , oxides and/or carbonates of calcium are used entirely or in part as bulk material together with organic materials , first in an vertical moving-bed reactor embodied as a countercurrent gasifier , which as its moving bed has a bulk material at least partly comprising alkaline substances , a reduction zone and an oxidation zone , which converts the organic materials entirely or in part by gasification with oxygen-containing gases into synthesis gas , and the bulk material remaining behind is furnished at least partially as a mixture of raw ...

METHOD FOR CONTROLLING A COMBUSTION AND FURNACE

The invention relates to a method for controlling a combustion in a furnace () which is heated by a burner () with at least one oxygen lance (), wherein a fuel is supplied via a fuel supply () of the burner () and oxygen is supplied at least in part with a high speed of 100 m/s or more by the at least one oxygen lance (), and wherein oxygen in an overstoichiometric range is supplied. The invention further relates to a furnace () for carrying out said method. 112-. (canceled)13100160120110160120. A method of closed-loop control of combustion in a furnace () heated by a burner () having at least one oxygen lance () , compromising: supplying fuel by a fuel feed () of the burner (); and supplying oxygen at least partly at a speed of at least 100 ms through the at least one oxygen lance () , wherein the supplying the oxygen is in a superstoichiometric range.14. The method of claim 13 , wherein the oxygen is at least partly supplied at a speed in the region of the speed of sound in oxygen of between 290 m/s and 320 m/s.15120. The method of claim 13 , wherein the burner comprises a plurality of the oxygen lances () through which the oxygen is supplied.16. The method of claim 13 , further comprising actuating the oxygen supply under automatic closed-loop control via an offgas measurement.17. The method of claim 16 , further comprising measuring a content of the oxygen in the offgas measurement.18. The method of claim 16 , further comprising measuring a CO content and/or a content of other reaction gases in the offgas measurement.19. The method of claim 13 , further comprising actuating the oxygen supply under automatic closed-loop control via a measurement of a flame signal.20. The method of claim 19 , further comprising measuring the flame signal with a UV light sensor.21. The method of claim 13 , further comprising manually actuating the oxygen supply.22100. The method of claim 13 , wherein the furnace () comprises a rotary drum furnace.23100101. The method of claim 13 , ...

METALLURGICAL FURNACE

The present invention pertains to metallurgical processes and equipment and, more particularly, to a metallurgical furnace capable of operating with a broad range of broad range of raw materials and fuels, including those with high levels of impurities. Accordingly, the metallurgical furnace of the present invention comprises (i) at least an upper tub, (ii) at least a lower tub, (iii) at least a fuel feeder positioned substantially between the at least an upper tub and the at least a lower tub, (iv) at least a row of tuyeres positioned on at least one of at least an upper tub and at least a lower tub, the at least a row of tuyeres fluidly communicating inside the furnace with the outside environment, and (v) at least a burner positioned on at least one of at least an upper tub and at least a lower tub. The use of at least a burner jointly with the at least a row of tuyeres generates a very intense release of heat by virtue of the exothermic reactions which occur by this combination. 1. A metallurgical furnace , comprising:at least an upper tub;at least a lower tub;at least a fuel feeder positioned substantially between the at least an upper tub and the at least a lower tub; andat least a row of tuyeres positioned on at least one of the at least an upper tub and at least a lower tub, the at least a row of tuyeres fluidly communicating inside the furnace with an outside environment; andat least a burner positioned on at least one of at least an upper tub and at least a lower tub.2. The metallurgical furnace as claimed in claim 1 , wherein the at least a burner is positioned on at least a row of tuyeres.3. The metallurgical furnace as claimed in claim 1 , wherein the at least a burner comprises a central tube claim 1 , through which fuel is injected claim 1 , and an outer tube which envelopes the burner claim 1 , through which a comburent passes.4. The metallurgical furnace as claimed in claim 3 , wherein the comburent is atmospheric air inflated by the tuyeres.5. The ...

An Efficient Process in the Production of Iron and Steel from Iron Ore

The invention discloses a method of reducing iron oxide to recover iron from iron content mixture. The method includes the step of mixing a reductant containing at least one of a silicon carbide or ferro-silicon with iron content mixture and heating it at a temperature ranging from 600-1000° C. for reaction to undergo. The iron content mixture is one of an iron ore, iron oxide and gangue material. The addition of reductant during the manufacture of sponge iron, DRI or pig iron or during reduction of iron ore assures advantages such as better converts yield, efficient use of resources, thus resulting in increasing productivity and reducing the cost of manufacturing. The method converts and upgrades low grade iron ore to high grade iron ore by dry beneficiation magnetic separation. The method also helps in recovery of iron from slag generated during iron and steel production.

ELECTRIC ARC FURNACE DUST AS COATING MATERIAL FOR IRON ORE PELLETS FOR USE IN DIRECT REDUCTION PROCESSES

Disclosed are coating compositions and methods for their use, comprising 90 wt. % electric arc furnace dust based on the total dry weight of the coating composition. The electric arc furnace dust includes at least 40 wt. % of FeOand at least 30 wt. % of CaO and CaCOcombined, based on the total dry weight of the electric arc furnace dust. 1. A coating composition comprising:{'sub': 2', '3', '3, '(a) at least 90 wt. % of electric arc furnace (EAF) dust based on the total dry weight of the coating composition, wherein the electric arc furnace dust comprises greater than 40 wt. % of iron (III) oxide (FeO) and greater than 30 wt. % of calcium oxide (CaO) and calcium carbonate (CaCO) combined, based on the total dry weight of the electric arc furnace dust; and'}(b) at least one binder material selected from a clay material or a cement material or both.2. The coating composition of claim 1 , wherein the electric arc furnace dust comprises at least 20 wt. % CaCOand at least 10 wt. % CaO.3. The coating composition of claim 2 , wherein the electric arc furnace dust comprises 45 wt. % to 60 wt. % claim 2 , preferably 50 wt. % to 55 wt. % FeO claim 2 , 20 wt. % to 30 wt. % claim 2 , preferably 23 wt. % to 27 wt. % CaCO claim 2 , and 10 wt. % to 20 wt. % claim 2 , preferably 12 wt. % to 17 wt. % CaO.4. The coating composition of claim 3 , wherein the electric arc furnace dust comprises 50 wt. % to 55 wt. % FeO claim 3 , 23 wt. % to 27 wt. % CaCO claim 3 , and 12 wt. % to 17 wt. % CaO.5. The coating composition of any one of to claim 3 , further comprising 0.5-5 wt. % of MgO and 0.5-5 wt. % of SiOrelative to the total dry weight of the coating composition.6. The coating composition of any one of to claim 3 , which is substantially free of zinc claim 3 , chromium claim 3 , manganese claim 3 , lead claim 3 , nickel claim 3 , sodium and potassium.7. The coating composition of any one of to claim 3 , which is substantially free of reducing agents comprising ferrous chloride and/or ...

FIXED-TYPE ELECTRIC FURNACE AND MOLTEN STEEL PRODUCTION METHOD

Provided are a fixed-type electric furnace enabling continuous operation which allows melting without the interruption of power supply and tapping in a fixed state, and a fixed-type electric furnace and a molten steel production method using same. The fixed-type electric furnace comprises: a preheating furnace which is disposed on the side of a melting furnace and preheats an iron source (scrap) using exhaust gas from the melting furnace; a supply means for supplying the iron source, which has been preheated in the preheating furnace, to the melting furnace; the melting furnace comprising electrodes for melting the preheated iron source; and a fixed-type discharge means for discharging molten steel which has been melted in the melting furnace, wherein the preheating furnace is integrally connected to the melting furnace. 1. A fixed-type electric furnace comprising:a preheating furnace disposed on a side of a melting furnace and preheating an iron source (scrap) using exhaust gas from the melting furnace;a supply part supplying the iron source preheated by the preheating furnace to the melting furnace;the melting furnace including electrodes for melting the preheated iron source; anda fixed-type discharge part discharging molten steel melted in the melting furnace,wherein the preheating furnace is integrally connected to the melting furnace.2. The fixed-type electric furnace of claim 1 , further comprising a reducing furnace connected to the preheating furnace and preliminarily reducing an oxidized iron source to provide the oxidized iron source to the melting furnace.3. The fixed-type electric furnace of claim 2 , wherein the melting furnace includes a carbon injector disposed in a wall surface of the melting furnace to directly reduce the preliminarily reduced iron claim 2 , andthe reducing furnace is connected to an exhaust gas supply pipe through which the exhaust gas passed through the preheating furnace is supplied to the reducing furnace, and comprises a ...

Apparatus for generating energy using a sensible heat during manufacturing of molten iron and method for generating energy using the same

An apparatus for generating energy using sensible heat of an offgas during manufacture of molten iron and a method for generating energy using the same are provided. The method for generating energy includes i) providing an offgas discharged from an apparatus for manufacturing molten iron including a reduction reactor that provides reduced iron that is reduced from iron ore and a melter- gasifier that melts the reduced iron to manufacture molten iron; ii) converting cooling water into high pressure steam by contacting the cooling water with the offgas; and iii) generating energy from at least one steam turbine by supplying the high pressure steam to the steam turbine and rotating the steam turbine.

Metal reduction and melting process

DIRECT REDUCED IRON SYSTEM AND METHOD USING SYNTHETIC COMBUSTION AIR

A system and method of direct reduction of iron (DRI) is disclosed, having a reduction unit configured to reduce iron oxides to metallic iron; a process gas heater coupled to the reduction unit, the process gas heater configured to supply the reduction unit directly with a source of heated reducing gas, where the process gas heater is further configured to receive a synthetic combustion air stream for heating the reducing gas, the synthetic combustion air stream comprising a source of oxygen with essentially no nitrogen. A method of carbon dioxide emission reduction from a direct reduction of iron (DRI) process is also disclosed. 1. A system for reduction of metal oxides , comprising:a reduction unit configured to reduce iron oxides to metallic iron;a process gas heater coupled to the reduction unit, the process gas heater configured to supply the reduction unit directly with a source of heated reducing gas, wherein the process gas heater is further configured to receive a synthetic combustion air stream for heating the reducing gas, the synthetic combustion air stream comprising a source of oxygen with essentially no nitrogen.2. The system of claim 1 , wherein the reduction unit provides a top gas stream comprising process carbon dioxide claim 1 , water claim 1 , unreacted reducing gas claim 1 , and unreacted hydrocarbon fuel.3. The system of claim 2 , wherein the system further comprises a top gas scrubber coupled to the reduction unit and a top gas separator coupled to the top gas scrubber claim 2 , wherein the top gas scrubber provides a scrubbed gas stream comprising the process carbon dioxide claim 2 , the unreacted reducing gas claim 2 , and the unreacted hydrocarbon fuel to the top gas separator and/or to the process gas heater.4. The system of claim 3 , wherein the top gas separator provides a first stream from at least two streams claim 3 , the first stream comprising the unreacted reducing gas and the unreacted hydrocarbon fuel with essentially no process ...

METHOD FOR PRODUCING METAL SPONGE

METHOD FOR PRODUCING IRON SPONGE

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Method for obtaining vanadium cast iron from iron-vanadium raw materials

FIELD: metallurgy. SUBSTANCE: method for smelting vanadium cast iron in an electric arc furnace by direct reduction of metals from oxide-containing materials includes metallization by direct reduction of metal oxides and melting of the resulting product. Oxide-containing materials mixed with a solid reducing agent in a rolled or granular state are continuously fed through a hollow electrode cavity into a zone of the electric arc furnace located between bottom and hollow electrodes. Direct reduction of metal oxides and their melting is carried out due to Lenz-Joule heat released in an interelectrode space of the electric arc furnace. Iron–vanadium concentrate with a vanadium concentration of 0.1-1.7% is loaded into a mixing unit as oxide-containing materials, crushed low-sulfur coal, as well as crushed limestone are loaded as a solid reducing agent to obtain slag basicity of more than 1.4, the resulting mixture from the mixing unit is fed into the hollow electrode cavity. In the method for smelting cast iron, vanadium alloying of cast iron is used, which provides a wide range of advantages in obtaining vanadium cast iron and its further processing into vanadium steel. EFFECT: technical result is obtaining vanadium cast iron. 1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 756 057 C2 (51) МПК C21B 11/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 11/10 (2021.05) (21)(22) Заявка: 2020108308, 26.02.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 24.09.2021 (43) Дата публикации заявки: 26.08.2021 Бюл. № 24 (45) Опубликовано: 24.09.2021 Бюл. № 27 2 7 5 6 0 5 7 R U (54) СПОСОБ ПОЛУЧЕНИЯ ВАНАДИЕВОГО ЧУГУНА ИЗ ЖЕЛЕЗОВАНАДИЕВОГО СЫРЬЯ (57) Реферат: Изобретение относится к области пространстве электродуговой печи. В металлургии. Способ выплавки ванадиевого смесительный агрегат загружают в качестве чугуна в электродуговой печи путем прямого оксидсодержащих материалов ...

Method of manufacturing sponge iron

FIELD: metallurgy. SUBSTANCE: method includes direct reduction of ground material containing iron oxide with reducing gas formed in melting and falsifying zone from carbon carriers and oxygen-containing gas. Reducing gas contains from 20 to 100 g/Ncu.m of dust at carbon content ranging from 30 to 70 mas.% of material containing iron oxide is subjected to action of reducing gas during period of time which exceeds period required for complete reduction, thus making it possible to obtain sponge iron at increased content of carbon. EFFECT: enhanced efficiency. 6 cl, 3 dwg, 5 tbl, 1 ex С99Ьс ПЧ с» (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ `” 2 176 672 (51) МПК” (13) С2 С 21В 13/00 (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98114972/02, 05.11.1997 (24) Дата начала действия патента: 05.11.1997 (30) Приоритет: 06.11.1996 АТ А 1932/96 (43) Дата публикации заявки: 10.05.2000 (46) Дата публикации: 10.12.2001 (56) Ссылки: ЕР 0217331 А2, 29.09.1986. ЕР 0594557 АЛ, 20.10.1993. 9$ 5338336, 16.08.1994. 0$ 4702766, 27.10.1987. 9$ 2082251, 21.01.1992. $Ц 1424344 АЛ, 10.07.1996. (85) Дата перевода заявки РСТ на национальную фазу: 06.08.1998 (86) Заявка РСТ: АТ 97/00238 (05.11.1997) (87) Публикация РСТ: М/О 98/20172 (14.05.1998) (98) Адрес для переписки: 119034, Москва, Пречистенский переулок 14, строение 1, 4-ый этаж, "Гоулингз Интернэшнл Инк.", Клюкину В.А. (71) Заявитель: Фоест-Альпине Индустрианлагенбау ГмбХ (АТ), Поханг Айрон энд Стил Ко., Лтд. (КК), Ресеч Инститьют оф Индустриал Саенс энд Текнолоджи, Инкорпорейтед Фаундэйшен (КК) (72) Изобретатель: КЕППЛИНГЕР Леопольд Вернер (АТ), ВАЛЛНЕР Феликс (АТ), ГЕННАРИ Удо (АТ) (73) Патентообладатель: Фоест-Альпине Индустрианлагенбау ГмбХ (АТ), Поханг Айрон энд Стил Ко., Лтд. (КК), Ресеч Инститьют оф Индустриал Саенс энд Текнолоджи, Инкорпорейтед Фаундэйшен (КК) (74) Патентный поверенный: Клюкин Вячеслав Александрович (54) СПОСОБ ПОЛУЧЕНИЯ ГУБЧАТОГО ЖЕЛЕЗА (57) Способ получения губчатого ...

Production of iron and steel in a double melting furnace and a solid state oxide prereduction machine.

Method of processing metallurgical production waste

FIELD: metallurgy. SUBSTANCE: iron and zinc-containing dust, milling scale, carbonaceous reducing agent and slag forming components are mixed, agglomerated, dried and heat-treated in a rotary-hearth kiln. Zinc sublimations are captured, the exhaust gases are cooled. Oxidation and condensation of zinc oxide in the form of dust and trapping of dust containing zinc oxide are carried out. Granulated cast iron and slag are cooled and separated. The ratio of dust and scale is set to provide total iron content in the mixture of at least 50%. The slag forming components are introduced in an amount providing the basicity of CaO/SiO 2 in range of 0.6-1.6 and the sulfur content in cast iron is not more than 0.09. The carbonaceous reductant is introduced in an amount providing carbon content in the cast iron ranging from 1.0 to 4.5%. Heat treatment is carried out by two-stage heating: at 1200-1300°C, then at a temperature increased by 80-200°C. EFFECT: increasing the content of zinc oxide in concentrate extracted from dust and scale, obtaining cast iron with metallic iron content of 94 percent or more, reducing the consumption of reducing agent and fuel. 3 cl, 1 dwg, 1 tbl, 1 ex 2626371 С 1 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ 0 5 соб 37409 ВО > Пе © # о С1 (51) МПК С22В 7/02 (2006.01) СРВ 11/06 (2006.0Т) С22В 19/38 (2006.01) (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2016135884, 05.09.2016 (24) Дата начала отсчета срока действия патента: 05.09.2016 Дата регистрации: 26.07.2017 Приоритет(ы): (22) Дата подачи заявки: 05.09.2016 (45) Опубликовано: 26.07.2017 Бюл. № 21 Адрес для переписки: 456910, г. Сатка, Челябинской области, ул. Солнечная, 32, ООО "Урал-рециклинг", Патентно-лицензионный отдел, Лихачевой О.А. (72) Автор(ы): Одегов Сергей Юрьевич (КО), Федосов Игорь Борисович (КП), Баранов Андрей Павлович (КО), Черных Владимир Евгеньевич (КП), Патрушов Алексей Евгеньевич (КО) (73) Патентообладатель(и): Общество с ограниченной ...

制造液态生铁的工艺方法

由块状含铁材料在一个熔炼气化器里制造液态生铁或者钢的原始产品的工艺方法,在熔炼气化器里输入块状煤炭和含氧气体使含铁材料熔化,同时生成一种还原气体,其中块煤从上面送入熔炼气化器,并且与含铁材料一起在熔炼气化器里形成一个固定床,同时将其挥发性碳氢化合物成分放出至位于固定床上的化铁炉腔,将粉末燃烧器从上倾斜向着固定床的表面对准。这样控制粉末燃烧器的工作,以使细颗粒状碳载体中至少有40%的碳含量燃烧成CO 2 。本发明也包括实施该工艺方法的装置。通过本发明就可能减少随还原气体从熔炼气化器里排出的粉尘,同时也减少继续排出的粉尘的粘结倾向。

Installation for production of power with utilisation of physical heat at production of cast iron and procedure for production of power with implementation of this installation

FIELD: metallurgy. SUBSTANCE: for production of power there is used end gas escaping from installation of production of cast iron. The installation consists of a reduction reactor for production of reduced iron from iron ore and of a furnace-gasifier wherein there is melted reduced iron for production of cast iron. Cooling water is brought to contact with end gas and is transformed into high pressure steam; there is produced power by means of at least one steam turbine whereto there is supplied steam of high pressure rotating the steam turbine. EFFECT: raised efficiency of installation. 26 cl, 5 dwg, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 424 323 (13) C2 (51) МПК C21B 11/00 (2006.01) F01K 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009123346/02, 17.12.2007 (24) Дата начала отсчета срока действия патента: 17.12.2007 (43) Дата публикации заявки: 27.01.2011 Бюл. № 3 (56) Список документов, цитированных в отчете о поиске: JP 11-315314 А, 16.11.1999. JP 10-152710 А, 09.06.1998. US 4673432 А, 16.06.1987. SU 1590048 A3, 30.08.1990. 2 4 2 4 3 2 3 R U (86) Заявка PCT: KR 2007/006605 (17.12.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 20.07.2009 (87) Публикация заявки РСТ: WO 2008/075870 (26.06.2008) Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ", пат.пов. А.В.Поликарпову (54) УСТАНОВКА ДЛЯ ПОЛУЧЕНИЯ ЭНЕРГИИ С ИСПОЛЬЗОВАНИЕМ ФИЗИЧЕСКОЙ ТЕПЛОТЫ ПРИ ПРОИЗВОДСТВЕ ЧУГУНА И СПОСОБ ПОЛУЧЕНИЯ ЭНЕРГИИ С ПРИМЕНЕНИЕМ ЭТОЙ УСТАНОВКИ (57) Реферат: Изобретение относится к получению энергии с использованием физического тепла отходящего газа, получаемого при изготовлении чугуна. Для получения энергии обеспечивают отходящий газ, выпускаемый из установки для получения чугуна, включающей реактор восстановления, в котором получают восстановленное железо, восстанавливаемое из железной руды, и плавильную печь- газификатор, в которой плавят ...

采用富氧强化熔池熔炼红土镍矿获得镍铁的工艺及其装置

本发明涉及一种采用富氧强化熔池熔炼红土镍矿获得镍铁的工艺及其装置，该工艺先将红土镍矿干燥；将干燥后的红土镍矿、熔剂和碎煤进行配料；将配好的物料加入至熔池熔炼熔化炉进行熔炼，将含氧85%~99%、温度为600℃~800℃的富氧空气鼓入炉内熔体中；熔池熔炼熔化炉产出的熔体通过溜槽流入熔池熔炼还原炉，加入还原剂，将含氧60%~85%、温度为600℃~800℃的富氧空气鼓入炉内熔体中，控制富氧空气对还原剂的过剩系数为0.4~0.5，熔体反应生成含镍15~30%的镍铁合金和炉渣。该工艺具有流程短、能耗低、投资省、产品含镍品位高，可实现过程自动化控制、生产效率高等特点。

Manufacture of iron in downward blowing type cupola using fine iron ore and fine coal

Method and plant for melting metal

FIELD: metallurgy. SUBSTANCE: method comprises steps of feeding ore and flux to reduction zone, reducing ore to sponge metal and then melting it together with fluxes in melting-gasifying zone at supplying carriers of carbon and oxygen-containing gas. Simultaneously technologic gas containing CO and H 2 is generated in said zone. technological gas serves as reducing gas and it is fed to reduction zone for reacting and then it is removed. Slag-forming fluxes such as calcium carbonate, dolomite and others are calcined with the aid of technological gas in calcination zone which is separated from reduction zone and melting-gasifying zone. In order to use slag-forming fluxes with any desired size of grain without undesired influence upon reduction process, calcination zone is arranged technologically in parallel with reduction zone and melting-gasifying zone relative to motion direction of raw material. Calcined fluxes are fed directly to melting-gasifying apparatus. Plant for performing the method includes calcining apparatus joined with melting-gasifying apparatus by means of supply pipeline. EFFECT: possibility of using slag-forming additives with any size of grain in relatively simple equipment. 15 cl, 12 dwg соо тс ПЧ сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 153 002 ' (51) МПК? 13) С2 С 21 В 11/00, 13/14 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98106224102, 09.07.1997 (24) Дата начала действия патента: 09.07.1997 (30) Приоритет: 10.07.1996 АТ А1226/96 (46) Дата публикации: 20.07.2000 (56) Ссылки: ОЕ 4240197 А, 01.06.1994. ЗЦ 1581748 АЛ, 30.07.1990. ОЕ 1167368 А, 09.04.1964. Ц$ 2964308, 13.12.1960. (85) Дата перевода заявки РСТ на национальную фазу: 10.04.1998 (86) Заявка РСТ: АТ 97/00155 (09.07.1997) (87) Публикация РСТ: \М/О 98/01585 (15.01.1998) (98) Адрес для переписки: 103104, Москва, Б. Палашевский пер. 3, офис 2, "Гоулинг Страти и Хендерсон", Клюкину В.А. (71) Заявитель: Фоест-Альпине Индустрианлагенбау ...

Process for producing hot metal or steel semiproducts from ferriferrous lump material

In a process for producing liquid pig iron from charge materials 4 which contain iron ore, the charge materials 4 are reduced to iron sponge in a direct reduction zone 2, the iron sponge is smelted in a melter/gasifier zone 15 with carbon carriers and oxygen-containing gas being supplied, and a CO- and H2-containing reducing gas is produced and is then introduced into the direct reduction zone 2, where it is converted and extracted as top gas. To allow economic utilization of siderite-containing and/or hydratic charge materials, these charge materials 4, before being reduced in the direct reduction zone 2, are preheated and calcined in a heating zone 32 which is separate from the direct reduction zone, for which purpose at least some of the top gas and/or of the reduction gas undergoes afterburning in a dedicated combustion zone, in which a O2-containing gas is supplied, so that the hot gas formed in this way contains a total CO and H2 content of at least 10 per cent by volume, and the hot gas is introduced into the heating zone 32. <IMAGE>

System for control of sinter formation in iron oxide reducing kilns

Air-ejection devices are arranged at a constant distance in a furnace. Solid reducing materials, minerals and constitutents are charged into the furnace from a movable bed. The maximum temperature of the solid bed reaches a sintering temperature of 1080 C. The charred solid, restored materials are utilized as restored materials and as fuel for a revoling furnace. The temperature in the final one- third of the furnace as it spreads to an outlet does not exceed the sintering temperature.

Method for operating autogoneous smelting furnace

熔融还原炼铁的电弧炉装置

本发明涉及熔融还原炼铁的方法和装置，将原料成型物置于熔融炼铁装置中，加热还原成金属铁，原料中的各种铁的氧化物被还原金属化率达到40～95％后，对还原炉产品继续进行加热并熔化，生产直接还原钢水或类似高炉生产的铁水。所述原料为呼吸壳或半呼吸壳或敞开壳，或三者的结合。呼吸壳、半呼吸壳和敞开壳的包壳用氧化钙或碳酸钙或碳化钙，或上述材料的结合，加入粘接剂制成。本发明提供的装置为电弧炉、埋弧电弧炉、转炉和感应炉等。还原产品加热熔化后，向电弧炉内吹入氧气或惰性气体，以便于除渣。采用包壳技术，有效的防止被还原物质在过程中氧化，避免成型物间因接触而造成粘结，结合吹入气体，利于造渣，渣铁分离效果好，生产的钢铁产品质量好。

純金属の製造方法および装置

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method of production of hot reducing gas for reduction of metal ore and plant for realization of this method

FIELD: method of production of CO- and H 2 - containing reducing gas used for reduction of finely-dispersed metal ores, iron ore in particular. SUBSTANCE: proposed method includes formation of reducing gas in gasifying zone through gasifying of carbon carriers , coal in particular at delivery of oxygen followed by cooling to temperature of reducing gas favorable for reduction process with no change of H 2 O and/or CO 2 in it. To avoid Buduar reaction and heterogeneous water-and-gas reaction and consequently heating of reducing gas; reducing gas is converted into reducing gas of higher stability at reducing temperature due to introduction of H 2 O and/or CO 2 , which makes it possible to obtain gas in temperature range suitable for reduction of metal ore , i. e. below temperature at which melting and clogging are likely to occur and to eliminate chemical action on metal materials of gas carrying systems. EFFECT: enhanced efficiency. 9 cl, 1 dwg Элусбгс ПЧ сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 192 476” С2 (51) МПК? С 21В 13/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 99102162102, 09.07.1997 (24) Дата начала действия патента: 09.07.1997 (30) Приоритет: 10.07.1996 АТ А 1225/96 (43) Дата публикации заявки: 20.05.2001 (46) Дата публикации: 10.11.2002 (56) Ссылки: ЕР 0594557 А, 20.10.1993. 9$ 5185032, 09.02.1993. ЕК 2236951, 07.02.1975. УР 58058206 А, 06.04.1983. УР 61130411 А, 18.06.1986. УР 57067108 А, 23.04.1982. $4 1581748 АЛ, 30.07.1990. (85) Дата перевода заявки РСТ на национальную фазу: 10.02.1999 (86) Заявка РСТ: АТ 97/00156 (09.07.1997) (87) Публикация РСТ: М/О 98/01586 (15.01.1998) (98) Адрес для переписки: 119034, Москва, Пречистенский пер., 14, стр. 1, 4-й этаж, "Гоулингз Интернэшнл, Инк.", В.А.Клюкину (71) Заявитель: ФОЕСТ-АЛЬПИНЕ ИНДУСТРИАНЛАГЕНБАУ ГМБХ (АТ), ПОХАНГ АЙРОН ЭНД СТИЛ КО., ЛТД. (КВ), РЕСЕЧ ИНСТИТЬЮТ ОФ ИНДУСТРИАЛ САЕНС ЭНД ТЕХНОЛОДЖИ, ИНКОРПОРЕЙТЕД ФАУНДЭЙШЕН (КВ) (72) Изобретатель: ...

Method for producing liquid conversion pig iron from iron ore and device for its embodiment

FIELD: ferrous metallurgy; methods and devices for production of liquid conversion pig iron from iron ore. SUBSTANCE: at the stage of preliminary reduction iron ore is preliminarily reduced in melting cyclone by means of reducing process gas produced from the stage of final reduction. To melt iron ore at least partially in melting cyclone, subsequent burning of reducing process gas takes place. Partially melted iron ore passes down to metallurgical converter located below the cyclone in which final reduction takes place with supply of coal and oxygen to form reducing process gas. In metallurgical converter, partial subsequent burning of reducing process gas takes place due to supply of oxygen to converter. Coefficient of subsequent burning of gas at the outlet of metallurgical converter is determined as ($$$+$$$)/($$$+CO+$$$+$$$) and amounts to not more 0.55. Coal is supplied directly into slag layer to obtain partial subsequent burning in metallurgical converter at least, partially, occurring in slag layer. The device for embodiment of the method has melting metallurgical unit made in the form of converter which forms common reactor together with melting cyclone located above it. Opening communicating the cyclone and converter serves simultaneously for passing of partially melted iron ore from cyclone to converter and for passing of process gas from converter to cyclone. The device is provided with boiler for steam generation and means for gas dedusting located successively in pipeline for discharge of process gas from melting cyclone. EFFECT: higher efficiency. 16 cl, 4 dwg оро6бо0гс пы ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ "” 2109 070‘ 13) СЛ С 21 В 11/00, 13/14 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 96102421102, 12.02.1996 (30) Приоритет: 13.02.1995 МЕ 9500264 (46) Дата публикации: 20.04.1998 (56) Ссылки: Кемие ае МааПигаге 90, 1993, М 3, р. 363 - 368. ЕР, заявка, 237811, кл. С 21 В 13/14, 1987 ...

液态生铁和/或钢坯的制造方法

本发明涉及一种最好分别由块状和/或球团状的氧化铁材料和必要时添加材料组成的配料制造液态生铁和/或钢坯的方法,其中这些配料在还原区中还原成海绵铁,该海绵铁在一个熔化气化区中在加入干燥的固态含碳物质和加入含氧气体的情况下熔化并产生一种含一氧化碳和含氢的还原气体,这种还原气体输入还原区中、在该处进行反应并作为炉顶炉气从还原区中排出和进行气体洗涤,并在必要时作为输出气体供给用户。从还原区排出的炉顶煤气—在其进行洗涤之前—在利用其显热的情况下与热交换流体进行热交换,而用于输入熔化气化区的固态含碳物质则用已加热的热交换流体进行干燥。此外,本发明涉及一种该方法的实施设备。

해면금속 생산용 설비 및 방법

바람직하게는 괴상 및/또는 펠릿상인 금속광석 또는 철광석 및 선택적으로 용제를 포함하는 장입물질로부터 해면금속, 특히 해면철을 생산하는 설비로서, CO- 및 H 2 - 함유 공급가스를 분배하는 최소한 하나의 제1 가스소스(1, 3), CO 2 제거기(17, 17') 및 선택적으로, CO- 및 H 2 - 함유 공급가스용 추가 가스소스를 형성하고, 금속광석을 수용하는 환원반응로(20)가 배설된 제1 가스소스(1, 3)로부터의 공급가스용 가열수단(22, 25), 환원반응로(20)로 통하는 환원가스공급관(19), 및 상기 다른 환원반응로(20)로부터 빠져나오는 배가스배출관(31)을 포함하고, 환원반응로(20)에 형성되어 공급가스로서 기능하는 배가스 중 최소한 일부용의 이송관(30)은 CO 2 제거기 및 선택적으로 가열수단을 통하여 환원반응로(20)의 환원가스공급관(19)과 유체연통된다. 경제적인 효율을 증대시키기 위하여, 설비는 병렬로 연결될 수 있는 최소한 2개의 CO 2 제거기(17, 29, 17', 29')가 배설되고, 그 중 하나는 추가적인 가스소스를 형성하는 환원반응로(20)에서 생성되어 재순환가스로서 전달되는 배가스용 이송관(30)과 연결가능하고, 제1 가스소스로부터의 최소한 하나의 공급가스용의 CO 2 제거기(17, 17')가 배설되고, CO 2 제거기 각각은 추가 가스소스를 형성하는 환원반응로(20)와 유체연통가능한 것을 특징으로 한다.

Recycling method of waste material by using of coal based iron making process

본 발명은 제철소내에서 발생하는 더스트와 슬러지의 재활용방안에 관한 것으로, 그 목적은 제철소에서 발생하는 더스트와 슬러지의 폐기물을 용철제조공정에서 연원료로 재활용할 수 있는 방법을 제공함에 있다. The present invention relates to a recycling method of dust and sludge generated in an ironworks, the object of which is to provide a method for recycling the waste of dust and sludge generated in the ironworks as a raw material in the molten iron manufacturing process. 상기 목적을 달성하기 위한 본 발명은, 광석과 부원료를 환원하도록 구성되는 환원로(10), 상기 환원로(10)에서 환원철을 공급받아 용융환원하여 용선을 제조하도록 구성되는 용융가스화로(20), The present invention for achieving the above object, the reduction furnace 10 is configured to reduce the ore and the subsidiary materials, the molten gasifier 20 is configured to receive the reduced iron from the reduction furnace 10 to produce molten iron by melting reduction , 상기 용융가스화로(20)의 배가스를 포집하여 배가스중의 미립의 더스트는 분진재순환관(210)을 통해 용융가스화로(20)에 순환시키고 미립의 더스트가 제거된 배가스는 가스관(222)을 통해 환원로(20)의 환원가스로 공급하는 사이클론(21)을 포함하고, The exhaust gas of the melt gasifier 20 is collected and the particulate dust in the exhaust gas is circulated through the dust recirculation pipe 210 to the melt gasifier 20, and the exhaust gas from which the particulate dust is removed is passed through the gas pipe 222. It includes a cyclone 21 for supplying the reducing gas of the reduction furnace 20, 상기 환원로(10)는 광석장입관(12)을 통해 광석소통관계로 용융가스화로(20)와 연결되고, 일단이 사이클론(21)과 연결된 분진재순환관(210)의 타단은 용융가스화로(20)내에 미립의 더스트를 용해응집시켜 취입하는 분진취입장치(213)가 연결되어 구성되는 용융환원로에서 용철을 제조하는 방법에 있어서, The reduction furnace 10 is connected to the molten gasifier 20 in the ore communication relationship through the ore charge tube 12, the other end of the dust recirculation pipe 210 connected to the cyclone 21 is a molten gasifier ( In the method for producing molten iron in a molten reduction furnace composed of a dust blowing device (213) for dissolving and aggregating particulate dust in 20), T.Fe, C, CaO, MgO의 합이 50중량%이상의 제철소내 폐기물을 수집하는 단계, Collecting the waste in the steelworks in which the sum of T.Fe, C, CaO, and MgO is 50% by weight or more, ...

Process and plant for producing of spongy metal

금속광석을 포함하는 장입물질로부터 해면금속을 생산하는 방법에 있어서, 가스소스(A, B)로부터의 CO- 및 H 2 - 함유 피드가스는 압축되고, 선택적으로 CO 2 가 제거되며 가열되고, 환원대(21)에 공급되어 환원가스로서 기능하고, 금속광석과 반응 후에 환원대(21)로부터 배가스로서 배출되어 소진기에 추가로 사용한다. In a method of producing a sponge metal from a charge material comprising a metal ore, the CO- and H 2 -containing feed gases from the gas sources (A, B) are compressed, optionally the CO 2 is removed and heated, And serves as a reducing gas. After the reaction with the metal ores, it is discharged as exhaust gas from the reduction unit 21 and is further used in the exhausting unit. 사고가 발생한 경우에도 환원대(21)에 충분한 양의 환원가스를 공급하기 위하여, CO- 및 H 2 - 함유 피드가스를 최소한 2개의 가스소스(A, B)로부터 환원대(21) 내에 공급하여 환원가스로서 기능하게 하고, 가스소스(A, B)중 하나의 고장은 환원대(21)로부터의 배가스 중 최소한 일부를 재순환시킴으로써 보정되고, 상기 배가스는 압축되고, CO 2 가 제거되며 선택적으로 가열되고, 사용되지 않은 다른 가스소스(A 또는 B 각각)로부터의 피드가스와 함께 환원대(21)에 공급된다. In the event of an accident, CO- and H 2 -containing feed gases are supplied from the at least two gas sources A and B into the reduction vessel 21 in order to supply a sufficient reducing gas to the reduction vessel 21 And the failure of one of the gas sources A and B is corrected by recycling at least a portion of the exhaust gas from the reduction zone 21, the exhaust gas is compressed, the CO 2 is removed, And is supplied to the reduction belt 21 together with feed gas from other unused gas sources (A or B, respectively).

Verfahren zum verwerten von schlacke

Operation of smelting reduction furnace

Method of producing liquid iron or liquid steel semiproducts and plant for its embodiment

FIELD: methods of production of liquid iron or liquid steel semiproducts from fine-grained iron-containing material, particularly, from reduced sponge iron. SUBSTANCE: method is realized in zone of melting gasifying in which iron-containing material is melted with supply of carbon-containing material and oxygen-containing gas, and simultaneous formation of reducing gas in layer formed from solid carbon carriers. In case of necessity, this is effected after preliminary final reduction. To prevent carry-over of fine particles of iron-containing material loaded into melting gasifier, iron-containing material is supplied to melting gasifier with the help of oxygen burner to form high-temperature combustion zone centrally above layer but in the immediate vicinity of it. EFFECT: higher efficiency. 11 cl, 1 dwg ВОЕ$ 2133780 С1 КО лого хх у мл ^ РММЕЕМЁАВ ОАААРАОЕВ (19) (11) (13) ВО 2 133 780 С1 (57 12° С 21 В 11/00, 13/00 (21), (22) Са ага: 9710633202, 18.07.1996 (71) Са аесаёц(е) . Отапо-Аёитега Егабпобеаваааааб АтАО (АТ), (30) 1бетбесад: 19.07.1995 АТ А 1234195 йоза Авбй уа Моёв Ёт., Ева. (КВ) О ДАКЛАЗАЛЕ рейад- Етоёосо 16 Егаапобеаё Мават уга 46) | ‹ 27.07.1999 онл дл до хлон Алхицох (16) Поавеетаап Оаспеазее, Ете0поаеоаа Оаоааее (КК) (56) Мтейте агеотагота, сеоёбтаайаб а то-ава 1 пейёа: ЕР 576414 А, 30.07.90. $ЦЧ 1581748 А, 30.07.90. ОЕ 1267692 В, 09.05.91. ЕР 174291 А, 12.03.86. ЦЗ 3264096 А, 02.08.66. ОЕ 2660884 А, (73) |доаюпаваааоави(ва): 11.04.85. ЕЮ 2011742 А, 06.03.70. УР 1-047820 Отапо-Авитыа Етаопобёаваамаас Атаб (АТ). А, 22.02.89. Поага Авой уа Моеёё Ёт., Ёда. (КВ), ке АА оаамание, рейаб- Етоёобо 16 Егаапобёаё Мават уга (85) Аада Табаа!аа са аее РСТ та табепавшор Оабйыааее, Егопоавоаа Оасгааве! (КВ) басб: 21.04.97 (86) Са ава РСТ: АТ 96/00128 (18.07.96) М/О 97/04136 (06.02.97) о =..х Аабай аё табатейёеё: (903) ВНАА - Айёа-а абаёёваоа таоаюа эттпёвйёев дазабавее га естабаомеа (21) Са аёа: 97106332 (51) С21В Ааоа аааа-ё абавёваса: 29.03.2005 то1опо апаа! ...

Method for reducing ferrugenous material

New method for the production of raw iron or so-called metallized iron ore. Biofuels i.e. preferably fuel wood and/or peat is in the final reduction brought into direct contact with the iron containing material in its solid state. Biofuels have very different properties compared to reduction agents on the basis of fossil fuels primarily coal and develop rapidly a reactive reduction gas at a comparatively low temperature. The new raw iron process is carried out with the iron containing material in its solid state of aggregation in different kinds of fluidized bed reactors in different system configurations.

一种氧化锰矿制备高碳锰铁的方法

一种氧化锰矿制备高碳锰铁的方法，是将锰含量为18‑50％的锰矿和还原剂、添加剂、活化剂、催化剂混合均匀置于反应器，采用电阻炉或微波炉以10‑50℃/min的升温速率将反应物料加热至1050±50℃，恒温5‑60min，然后以10‑60℃/min的升温速率加热至1250±50℃，恒温12‑60min至反应完全，在升温和恒温过程中保证炉内气氛为中性或弱还原性气氛，反应产物随炉冷却至600±50℃时取出反应产物，并在惰性气保护冷却条件下以大于360℃/min，快速冷却至25‑50℃，反应产物将自然粉碎，经筛分或磁选，可得到高碳锰铁。高碳锰铁中锰含量60％‑80％、铁含量10％‑35％、碳含量4.0％‑7.5％、磷含量小于0.10％、硫含量小于0.10％。本发明具有工艺简单、操作方便、成本低、锰转化率高等特点，具有广阔的应用前景。

鉄鉱石の溶融還元方法

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Production method of molten pig iron or intermediate steel product and facility for implementing the production method

바람직하게는 괴상 및/또는 펠릿인 철광석 및 선택적으로 용제를 포함하는 장입물질로 용융선철 중간제품 또는 용강 중간제품을 생산하는 방법에 있어서, 상기 장입물질이 환원대(12)에서 해면철로 직접환원되고, 상기 해면철은 탄소캐리어 및 산소함유가스의 공급으로 용융가스화대(8)에서 용해되는 동시에, 환원가스대(12) 내에 취입되는 CO- 및 H 2 -함유환원가스가 생성되어 반응한 후 배가스로서 배출되고, 상기 배가스는 소진기(20)에 전달된다. C fix 가 높은 탄소캐리어 및 O 2 소모의 억제를 가능하게 하기 위하여, 배가스의 CO 2 함유량을 훨씬 초과하되, 바람직하게는 40%를 초과하는 CO 2 함유량을 가지며, 또한 CO가 존재하는 경우 CO의 함유량이 배가스의 CO 함유량에 훨씬 미달하는 CO 함유량을 가지는 CO 2 함유량이 높은 가스가 상기 용융가스화대(8) 내에 취입되고, CO가 형성되면 탄소캐리어와의 반응이 일어난다.

Manufacturing method and manufacturing apparatus for cast iron cast iron

본 발명은 예비-환원 단계 후 최종 환원 단계로 철광석을 직접 환원시키는 것을 특징으로 하는 주조된 무쇠철의 제조방법 및 제조장치에 관한 것으로서, 그 제조방법은 예비-환원단계에서, 철광석이 주조 사이클론(1)내에서 최종환원 단계로부터 나온 처리 기체를 환원시킴으로써 예비환원시키고, 후-연소는 주조 사이클론내에서 처리 기체를 환원시킴으로써 일어나서 주조 사이클론내 상기 철광석이 적어도 일부가 용융되며, 일부가 용융된 철광석이 석탄 및 산소의 공급에 의하여 최종 환원이 일어난 사이클론 밑에 위치하는 야금 용기(4)내로 아래방향으로 통과하여 처리기체를 환원시키고, 일부의 후-연소가 공급된 산호에 의하여 야금 용기내 환원 처리 기체내에서 발생하며, 야금 용기를 나오는 기체의 후-연소 비율은 0.55이하이고, 상기 석탄의 슬랙층(7)내로 직접 공급되어 야금 용기내 일부의 후-연소가 상기 슬랙층내에서 적어도 일부 발생하는 것을 특징으로 한다.

Method of producing granular metallic iron

FIELD: technological processes. SUBSTANCE: method involves preparation of charge from iron-containing raw material, carbon-containing reducing agent, calcium-containing mineral filler and additive acting as substance accelerating cohesion of secondary slag product and facilitating coalescence of formed metal, their dosed mixing, briquetting in a briquette press, removal of excess moisture from the obtained briquettes by treatment in a drying unit and their further high-temperature treatment in a furnace with a rotating bottom with subsequent cooling and separation into metal and slag. Mixture contains 64–71 wt% of iron-containing material, 13.6–19.4 wt% of carbonaceous reducing agent, 2.4–3.2 wt% of calcium-containing mineral filler and 7.7–8.5 wt% of complex binder, the rest – water. Industrial sodium liquid glass is used as an additive acting as a substance which promotes cohesion of the secondary slag product and facilitates coalescence of the formed metal. EFFECT: disclosed is a technology of producing granular metallic iron in a rotary bottom furnace. 7 cl, 3 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 717 758 C1 (51) МПК C21B 13/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 13/08 (2020.02) (21)(22) Заявка: 2019130156, 23.09.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 25.03.2020 (45) Опубликовано: 25.03.2020 Бюл. № 9 Адрес для переписки: 664033, г. Иркутск, ул. Лермонтова, 333в, кв. 58, Вершалю Владимиру Владимировичу 2 7 1 7 7 5 8 C 1 (56) Список документов, цитированных в отчете о поиске: RU 2497953 C2, 10.11.2013. RU 2271395 C2, 10.03.2006. WO 2003064708 A1, 07.08.2003. RU 2238989 C1, 27.10.2004. IN 201303665 I3, 06.12.2013. Zhu, D. et al. A study of pre-briquetting granulation sintering of the mixtures with high ratio of Brazilian specularite concentrate. Ironmaking & Steelmaking. Nov.2016, Vol. 43 Issue 10, p.721-729. (54) СПОСОБ ПОЛУЧЕНИЯ ...

Apparatus for manufacturing molten iron and method for manufacturing molten iron

배가스의 현열을 이용하여 에너지 사용량을 저감할 수 있는 용철제조장치 및 용철제조방법을 제공한다. 본 발명의 일 실시예에 따른 용철제조방법은, i) 하나 이상의 환원로에서 철광석을 환원시켜 환원철을 제조하는 단계, ii) 탄재 및 환원철을 환원로와 연결된 용융가스화로에 장입하고, 환원철을 용융하여 용철을 제조하는 단계, iii) 환원로에 공급되어 철광석을 환원시키는 환원가스를 제공하는 단계, iv) 환원가스는 환원철을 환원한 후, 환원로로부터 배가스로서 배출되는 단계, 및 v) 배가스로 물을 가열하여 증기를 생성하는 단계를 포함한다. 배가스, 증기, 현열, 에너지, 용철제조방법, 용철제조장치 Provided are a molten iron manufacturing apparatus and a molten iron manufacturing method which can reduce energy consumption by using sensible heat of exhaust gas. The method for manufacturing molten iron according to an embodiment of the present invention includes the steps of: i) reducing iron ore in one or more reduction furnaces to produce reduced iron, ii) charging carbonaceous material and reduced iron into a molten gasifier connected to the reduction furnace, and melting the reduced iron. To produce molten iron, iii) providing a reducing gas which is fed to a reducing furnace to reduce iron ore, iv) the reducing gas is reduced as reducing gas and then discharged from the reducing furnace as exhaust gas, and v) as exhaust gas. Heating the water to produce steam. Exhaust gas, steam, sensible heat, energy, molten iron manufacturing method, molten iron manufacturing equipment

Modular furnace

FIELD: modular plants for producing melt metal by self-reducing of agglomerates from metal oxide or from preliminarily reduced metal such as iron. SUBSTANCE: furnace includes large number of mutually united sections of the same size and design, all connected with fuel source and with unit for supplying to chamber of each section metallic charge containing self-reduced agglomerate and(or) preliminarily reduced metal. Sections are made with possibility of their combining for creating furnace. Each section has upper well in upper part of which at least one apparatus for supplying gas and at least one gas removing apparatus are arranged; and lower well. Upper and lower wells have rectangular cross section whose sides in upper part of lower well are more than sides of upper well. EFFECT: improved design of furnace. 8 cl, 5 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 299 244 (13) C2 (51) ÌÏÊ C21B 13/02 C21B 11/00 (2006.01) (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2003130755/02, 19.03.2002 (30) Êîíâåíöèîííûé ïðèîðèòåò: 20.03.2001 US 09/811,427 (73) Ïàòåíòîîáëàäàòåëü(è): ÑÒÀÐÒÅÊ ÀÉÐÎÍ, ËËÊ (US) (43) Äàòà ïóáëèêàöèè çà âêè: 10.04.2005 R U (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 19.03.2002 (72) Àâòîð(û): ÊÎÍÒÐÓ×È Ìàðêîñ Äè Àëáóêåðê (BR), ÊÎÑÒÀ Ïåäðî Ýíðèêå Êàðïèíåòòè (BR), ÌÀÐØÅÇÈ Ýäìàð Ñàóë (BR) (45) Îïóáëèêîâàíî: 20.05.2007 Áþë. ¹ 14 2 2 9 9 2 4 4 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: WO 88/028038 A1, 21.04.1988. US 3864122 A, 04.02.1975. WO 0051946 A1, 09.08.2000. SU 704463 A3, 15.12.1979. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 20.10.2003 2 2 9 9 2 4 4 R U (87) Ïóáëèêàöè PCT: WO 02/075000 (26.09.2002) C 2 C 2 (86) Çà âêà PCT: US 02/08094 (19.03.2002) Àäðåñ äë ïåðåïèñêè: 103735, Ìîñêâà, óë. Èëüèíêà, 5/2, ÎÎÎ "Ñîþçïàòåíò", ïàò.ïîâ. Ò.Ñ.Ôîìè÷åâîé (54) ÌÎÄÓËÜÍÀß ÏÅ×Ü (57) Ðåôåðàò: Ìîäóëüíà óñòàíîâêà äë ïîëó÷åíè ðàñïëàâëåííîãî ìåòàëëà ïóòåì ...

Production of molten iron from powdery iron ore

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

A process for the production of molten pig iron or steel prototype products and a plant for carrying out such a process (Molten pig iron or steel pre-products and a plant for carrying out the process)

용융선철 또는 강 시제품의 제조공정 및 이러한 공정을 수행하기 위한 플랜트. 미세한 입자 철함유 재료, 특히 환원된 해면철로부터 용융신철 또는 강 시제품을 생산하기 위한 제조 공정에 있어서, 용융철 기화기(5)의 용융 기화 영역(6)내에서 철함유 재료는 환원 가스의 형성과 동시에 탄소 함유 재료와 산소 함유 가스를 공급하여 고체 탄소 운반체의 형태로 층(16)내에서 용해된다. 용융실 기화기에 장입된 철함유 재료의 입자가 배출되는 것을 방지하기 위하여, 철함유 재료는 산소 버너(15)로 고온 연소 영역(21)을 형성하여 용융실 기화기의 중심으로 근접하게 층(16)의 위로 층의 바로 근처로 공급한다.

Method and device for making pig iron and zinc oxide from material including iron oxide and zinc oxide

본 발명은 산화철과 산화아연이 함유된 물질로부터 선철 및 조산화아연을 제조하는 방법 및 장치에 관한 것으로, 산화철과 산화아연이 함유된 물질과 가탄재 및 바인더를 혼합하여 혼합물을 만드는 혼합 단계와, 상기 혼합물을 펠릿으로 성형하는 펠릿성형 단계와, 상기 펠릿을 환원로에 투입하여 상기 펠릿 중의 산화철은 환원 및 배출하고 상기 펠릿 중의 산화아연은 증발시켜 분리 및 배출하는 환원 및 분리 단계와, 상기 환원로에서 배출된 아연 증기를 냉각 후 포집하여 조산화아연을 포집한 후 정제 과정에 의하여 조산화아연으로부터 불순물을 분리 및 배출하여 순수한 조산화아연을 획득하는 조산화아연 제조 단계와, 상기 환원로에서 배출된 철 성분을 코크스, 폐기물고형연료(RDF)와 함께 용융로에 투입하고, 산소, 미분탄, 폐합성수지 및 상기 조산화아연 제조 단계에서 분리 및 배출된 불순물을 용융로에 투입하여 용융시키고 용융된 선철과 슬래그를 각각 분리 배출하여 선철 및 슬래그를 획득하는 선철 및 슬래그 제조 단계와, 상기 용융로에서 발생하는 환원성 가스를 상기 환원로에 공급하는 가스 공급 단계를 포함하여 구성되는 것을 특징으로 한다. The present invention relates to a method and apparatus for producing pig iron and zinc oxide from a material containing iron oxide and zinc oxide, comprising: a mixing step of mixing iron oxide and zinc oxide-containing material with a carbonaceous material and a binder to form a mixture; A pellet forming step of forming the mixture into pellets, a reduction and separation step of reducing and discharging the iron oxide in the pellets and distilling and discharging zinc oxide in the pellets by evaporating the pellets into a reduction furnace; Crude zinc oxide discharged from and collected by collecting the zinc oxide to collect the zinc oxide and then purifying zinc zinc oxide by the purification process to obtain the crude zinc oxide by the purification process, and discharged from the reduction furnace The iron content of coke, waste solid fuel (RDF) together with a molten furnace, oxygen, pulverized coal, waste synthetic resin and Pigment and slag manufacturing step of obtaining the iron and slag by injecting the impurities separated and discharged in the zinc oxide manufacturing step into the melting furnace to separate and discharge the molten pig iron and slag, respectively, and reducing the reducing gas generated in the furnace It characterized in that it comprises a gas supply step for supplying to the furnace. 환원로, 용융로, 제강분진, 산화아연, 선철, 폐합성수지 Reduction furnace, melting furnace, steelmaking dust, ...

Method of producing ferroalloys and portland cement

FIELD: metallurgy; cement production. SUBSTANCE: invention relates to metallurgy and cement production. Production method involves liquid-phase reduction of ferroalloy components in a melting roller chamber and melt slag saturation with lime in a saturation roller chamber, wherein ferroalloy after melting roller chamber is directed for casting and crystallization, and Portland cement clinker after saturation roller chamber is directed for cooling into clinker cooler and cleaning from metal inclusions, wherein clinker cleaning from metal inclusions is carried out in the composition of the cement mixture by means of its selective grinding with subsequent air separation, besides, dust-gas mixture formed in melting chamber is directed to recovery boiler, and dust-gas mixture from saturation chamber and clinker cooler is used as heat carrier during lime burning. EFFECT: disclosed is a method for combined production of ferroalloy and Portland cement, which increases economic and environmental efficiency of production of ferroalloys and Portland cement. 8 cl, 14 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 768 304 C1 (51) МПК C21B 13/08 (2006.01) C21B 5/04 (2006.01) C04B 7/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 13/08 (2022.01); C21B 5/04 (2022.01); C04B 7/44 (2022.01) (21)(22) Заявка: 2021122557, 29.07.2021 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Ласанкин Сергей Викторович (RU) Дата регистрации: 23.03.2022 Приоритет(ы): (22) Дата подачи заявки: 29.07.2021 (45) Опубликовано: 23.03.2022 Бюл. № 9 2 7 6 8 3 0 4 R U (54) Способ производства ферросплавов и портландцемента (57) Реферат: Изобретение относится к металлургии и насыщения направляют на охлаждение в цементному производству. Технический результат клинкерный холодильник и очистку от заключается в предложении способа совместного металлических включений, причем очистку производства ферросплава и портландцемента, ...

Method of producing liquid iron or liquid steel semiproducts and plant for its embodiment

FIELD: metallurgy. SUBSTANCE: method of producing liquid iron or liquid steel semiproducts from material containing iron oxide in the form of particles includes preliminary reduction of the material in fluidized bed with the help of reducing gas in at least one stage of preliminary reduction and then reduction to sponge iron at the stage of final reduction. Produced sponge iron is melted in melting-gasifying zone by supply of carriers of carbon and oxygen gas in which simultaneously produced is reducing gas containing CO and H 2 which is supplied to the stage of final reduction where it is converted, withdrawn and supplied to at least one stage of preliminary reduction. At this stage, gas is subjected to conversion, withdrawal and washing and in this end, withdrawn as gas ready for use. In this case, at least one part of reacted gas is cleaned from CO 2 , heated and used in the capacity of recirculating reducing gas for reduction of material containing iron oxide. To exclude sticking during reduction, one part of reducing gas flowing from stage of final reduction is withdrawn to stage of preliminary reduction, washed from CO 2 and heated and then returned to stage of final reduction. The plant has at least two reactors for preliminary reduction and melting gasifier interconnected by transportation and connecting pipelines. Branched from connecting gas pipeline is pipeline with scrubber, device for cleaning from CO 2 and gas heater which is connected with pipeline of reducing gas and melting gasifier. EFFECT: higher efficiency. 14 cl, 2 dwg, 2 tbl скс тс ПЧ ГЭ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ “” 2125 613 ' 5 МК С 21 В 13/14 13) СЛ 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 97111822102, 08.10.1996 (30) Приоритет: 10.10.1995 АТ А 1681/95 (46) Дата публикации: 27.01.1999 (56) Ссылки: Ц, 5185032 А, 1994. ЗЦ(, 1581748 А, 1990. ЕР, 0255180 А, 1988. ЕР, 0614990 А, 1994. 4$, 5338336 А, 1994. ЕР, 0594557 А, 1994. ЕР, ...

Method of starting a plant for the production of pig iron or steel pre-material and arragnement for carrying out the method

내용 없음. No content.

Method of running of smelting gasifier

Изобретение относитс  к производству жидкого чугуна или стального полупродукта непосредственно из железных руд. Сущность: способ предусматривает при прекращении или уменьшении подвода кислородсодержащего газа ниже заданного количества, а также при прекращении охлаждени  водой кислородных сопл прекращение подачи кислородсодержащего газа и через кислородные сопла ввод инертного газа. При остановке плавильного газификатора после постепенного снижени  рабочегодавлени  и подвода кислородсодержащего газа количество инертного гэзз составл ет 15%. при прекращении подвода кислородсодержащего газа при нормальном рабочем давлении - 25%, а при прекращении охлаждени  водой - 30% от нормального количества кислородсодержащего газа. 2 ил,

Method for returning fine-grained solid substance taken out from reactor by carrier gas

FIELD: recovery of fine-grained material. SUBSTANCE: method involves separating solid substance in solid substance separator, particularly in cyclone; returning solid substance into reactor by means of carrier gas while maintaining predetermined pressure difference in solid substance separator and solid substance return zone; continuously sucking out separated solid substance from solid substance separator by means of working gas and also with the help of injector, subjecting to acceleration, directing into reactor and supplying oxygen at reactor inlet end to partially gasify and/or burn it. Method allows returning of solid substance to be performed without employment of movable parts, which are commonly subjected to abrasive actions. EFFECT: increased efficiency and enhanced reliability in operation. 14 cl, 2 dwg Д19с8тс ПЧ сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ "” 2 183 677. (51) МПК? 13) С2 С 21 В 13/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 99111366/02, 24.10.1997 (24) Дата начала действия патента: 24.10.1997 (30) Приоритет: 30.10.1996 АТ А 1899/96 (46) Дата публикации: 20.06.2002 (56) Ссылки: ЕР 0278287 В, 17.08.1988. ЕР 0493752 А, 08.07.1992. 4$ 5037617, 06.08.1991. 4$ 5110323, 15.10.1992. УР 59-153121, 01.09.1984. 4$ 4733619, 29.03.1988. $0 1041578 АЛ, 15.09.1983. (85) Дата перевода заявки РСТ на национальную фазу: 31.05.1999 (86) Заявка РСТ: ЕР 97/05874 (24.10.1997) (87) Публикация РСТ: М/О 98/18969 (07.05.1998) (98) Адрес для переписки: 129010, Москва, ул. Большая Спасская 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", Ю.Д.Кузнецову, рег.№ 595 (71) Заявитель: ФОЕСТ-АЛЬПИНЕ ИНДУСТРИАНЛАГЕНБАУ ГМБХ (АТ) (72) Изобретатель: ШТОККИНГЕР Йозеф (АТ), КАСТНЕР Райнер Вальтер (АТ), МАЙР Херберт (АТ), ЛАССНИГ Херберт (АТ), ХЕКМАНН Хадо (ОЕ), ВИДЕР Курт (АТ), ШЕНК Йоханнес (АТ) (73) Патентообладатель: ФОЕСТ-АЛЬПИНЕ ИНДУСТРИАНЛАГЕНБАУ ГМБХ (АТ) (74) Патентный поверенный: Кузнецов Юрий Дмитриевич (54) ...

Cast iron production method, device for its production and cast iron produced by said method

FIELD: metallurgy. SUBSTANCE: invention relates to a cast iron production method. Method of producing cast iron from pre-reduced iron ore comprises the following steps, where: (a) preparing a charge of pre-reduced iron ore (PIO), characterized by metal coating of more than 90 % and containing more than 2.8 wt % of carbon, wherein at least 80 % of said carbon are in iron-bound state in form of cementite Fe 3 C, (b) charging charge into electric arc furnace (EAF), (c) melting a charge in a melting chamber of an electric arc furnace (EAF) in a reducing atmosphere and with excess internal pressure generated by gases produced by reducing and flowing at step (c) reactions, to produce liquid cast iron with a predetermined carbon content, wherein at least 80 wt % of said predetermined carbon content in cast iron is obtained from carbon in a charge from pre-reduced iron ore, if necessary, to control carbon content in cast iron, step (b1) is carried out, at which carbon material is added to the mixture, wherein said step (b1) is carried out simultaneously with step (b), between steps (b) and (c), simultaneously with step (c) or after step (c). Iron is produced from pre-reduced iron ore with high content of carbon using electric arc furnace. EFFECT: reduced duration of casting cycles. 10 cl, 1 tbl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 734 853 C2 (51) МПК C21B 11/10 (2006.01) C21B 13/12 (2006.01) C21B 13/14 (2006.01) C21C 1/08 (2006.01) C21C 5/52 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 11/10 (2020.02); C21B 13/12 (2020.02); C21B 13/14 (2020.02); C21C 1/08 (2020.02); C21C 5/52 (2020.02) (21)(22) Заявка: 2018141749, 29.05.2017 29.05.2017 Дата регистрации: 23.10.2020 31.05.2016 IT 102016000056295 (43) Дата публикации заявки: 27.05.2020 Бюл. № 15 (45) Опубликовано: 23.10.2020 Бюл. № 30 (86) Заявка PCT: EP 2017/062860 (29.05.2017) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: ...

Method and installation for producing cast iron from metal ores

FIELD: ferrous metallurgy. SUBSTANCE: when smelting cast iron, metal ore and all necessary additives pass from top to bottom through reduction assembly blown through from the bottom by hot carbon monoxide and hydrogen-containing reducing gas. Reduction product is discharged from the bottom part of assembly and loaded into another assembly serving for its further processing. Reducing gas is produced in gas generator via partial oxidation of carbon materials or decomposition of natural gas or crude oil. When processing metal ores with high content of dusty and/or grainy fractions, ore, with supplementary agents added, is passed through reduction assembly with in-series, in-cascade, and stepwise arranged downward-inclined partitions. In this case, metal ore and, if necessary, additives are size-sorted into fractions and coarse ore fraction and, if necessary, coarse additive fraction are introduced into upper section of gas- distribution partitions, fine ore fraction into their middle section, and fine additive (if added) fraction into their lower section. EFFECT: enabled processing iron ore with 60-100% fine fraction with no preliminary treatment or conversion. 56 cl, 3 dwg сз Грс ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ "” 2118 374. 13) СЛ С 21 В 11/00, 13/14 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 95113866/02, 29.11.1993 (30) Приоритет: 30.11.1992 ОЕ Р4240197.6 (46) Дата публикации: 27.08.1998 (56) Ссылки: ОЕ, 28473303, А, 1990. (71) Заявитель: Богдан Вулетич (0Е) (72) Изобретатель: Богдан Вулетич (ОЕ), Боян Вулетич (ОЕ), Владан Вулетич (0Е) (73) Патентообладатель: Богдан Вулетич (0Е) (54) СПОСОБ ПОЛУЧЕНИЯ ЧУГУНА ИЗ МЕТАЛЛИЧЕСКИХ РУД И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ (57) Реферат: Сущность изобретения: при изготовлении чугуна металлическая руда и все необходимые добавляемые добавки проходят сверху вниз через восстановительный агрегат, продуваемый снизу вверх горячим газом, содержащим оксид углерода ...

Cast iron melting method in electric-arc furnaces

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy and can be used in machine building, automotive industry and tractor construction in production of castings from cast iron. Iron of specified chemical composition is obtained in electric arc furnaces by stage-by-stage feeding of charging with carbon- and silicon-containing material in form of metallurgical silicon carbide with fraction 0–10 mm and content of SiC 82–95 % in amount of 0.57–1 %, carbon-containing material in form of crushed graphite in amount of 0.15–0.74 %, as well as steel component of charge with its further melting and subsequent correction of chemical composition of melt by additional introduction of crushed graphite, metallurgical silicon carbide and ferroalloys. EFFECT: invention allows for step-by-step charging of crushed graphite, metal part of charge and metallurgical silicon carbide without mixing of said components, provides stable assimilation of carbon and silicon from carbon- and silicon-containing materials and their minimum loss. 1 cl, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 688 099 C1 (51) МПК C21B 11/10 (2006.01) C22C 37/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 11/10 (2019.02); C22C 37/00 (2019.02) (21)(22) Заявка: 2018136823, 18.10.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 17.05.2019 (56) Список документов, цитированных в отчете о поиске: RU 2395589 С2, 27.07.2010. RU (45) Опубликовано: 17.05.2019 Бюл. № 14 2 6 8 8 0 9 9 R U (54) Способ выплавки чугуна в электродуговых печах (57) Реферат: Изобретение относится к металлургии и может быть использовано в машиностроении, автомобилеи тракторостроении при производстве отливок из чугуна. Чугун заданного химического состава получают в электродуговых печах путем поэтапной загрузки в шихтозавалку углерод- и кремнийсодержащего материала в виде металлургического карбида кремния фракцией 0-10 мм и содержанием SiC 82-95% в ...

A method for making molten iron by using hot compaction of fine dri and calcined additives in non-coking coal based iron making process

본 발명은, 분환원철및 분소성부원료가 함유된 균일입도의 괴성체를 사용하여 용철생산량을 증대시킬 수 있도록 개선된 일반탄을 이용한 용철 제조 공정에서 분환원철 및 분소성부원료의 괴성체를 이용한 용철제조방법에 관한 것이다. The present invention, molten iron using the reduced iron and the compacted iron raw material in the molten iron manufacturing process using the improved coal to improve the production of molten iron using a uniform particle size compacted material containing the reduced iron and powdered subsidiary material It relates to a manufacturing method. 본 발명은, 일반탄을 이용한 용철 제조 공정에서, 분환원철및 분소성부원료를 혼합 괴성화하여 30mm이하의 크기를 갖추고, 밀도는 3.5 내지 4.0Kg/cm³를 갖는 괴성체로 성형하여 상기 용융 가스화로에 투입하고, 용철제조을 실행하는 일반탄을 이용한 용철 제조 공정에서 분환원철 및 분소성부원료의 괴성체를 이용한 용철제조방법을 제공한다. The present invention, in the molten iron manufacturing process using a general coal, mixed granulated iron and powdered subsidiary materials are mixed and compacted to have a size of 30 mm or less, the density is formed into a compacted body having a 3.5 to 4.0 Kg / cm³ to the molten gasifier Provided is a method for manufacturing molten iron using a compacted body of reduced iron and powdered auxiliary raw materials in a molten iron manufacturing process using ordinary coal which is injected and performs molten iron. 본 발명에 의하면, 분환원철및 분소성부원료를 혼합하여 괴상화하기 때문에 상당한 공극이 존재하게 되는데 이러한 이유로 괴성체는 석탄충진층내에서 쉽게 침탄되어 용융이 용이하게 이루어 지고, 그에 따라서 용철 생산량 향상이 기대될 수 있다. According to the present invention, there are considerable voids because the mixed reducing iron and the powdered subsidiary material are mixed and bulked. For this reason, the compacted body is easily carburized in the coal-packed bed to facilitate melting, thereby improving molten iron production. Can be.

Sponge metal manufacture method and apparatus

FIELD: metallurgy. SUBSTANCE: method involves obtaining sponge iron from burden materials formed as lumps and/or pellets comprising metal ore and additives; supplying reducing gas comprising CO and H 2 from two sources of basic gas into reduction zone of reducing reactor; upon reaction with metal ore in reducing zone, discharging reducing gas in the form of export gas. Prior to supplying, basic gas is subjected to compression, cleaning from CO 2 , heating, with following supplying in the form of reducing gas into reducing reactor. In case one of gas sources fails to operate, part of reducing gas is compensated by recirculation of at least part of export gas subjected to compression, cleaning from CO 2 and heating, and supplied into reduction zone together with reducing gas from other serviceable gas source. Apparatus has two gas sources made in the form of reducing reactors, each equipped with melting gasificator. EFFECT: increased efficiency by stable reduction process and improved quality of sponge metal. 20 cl, 4 dwg (19) ВИ "” 2491 208” С2 517 МПК’ С 24 В 13/14 РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98118020102, 03.03.1997 (71) Заявитель: ФОЕСТ-АЛЬПИНЕ ИНДУСТРИАНЛАГЕНБАУ (24) Дата начала действия патента: 03.03.1997 ГМБХ (АТ) (30) Приоритет: 05.03.1996 АТ А 414/96 (72) Изобретатель: ВУРМ Иоганнес (АТ) (43) Дата публикации заявки: 10.09.2000 (73) Патентообладатель: ФОЕСТ-АЛЬПИНЕ ИНДУСТРИАНЛАГЕНБАУ 4 (46) Дата публикации: 20.10.2002 ГМБХ (АТ) о (56) Ссылки: УР 62-247018 А, 28.10.1987. УР (74) Патентный поверенный: 01-129914 А, 23.05.1989. АТ 396255 В, Клюкин Вячеслав Александрович 26.07.1993. ОЕ 4037977 АЛ, 11.06.1992. МО со 96/00302 АЛ, 04.01.1996. © (85) Дата перевода заявки РСТ на национальную фазу: 05.10.1998 сч (86) Заявка РСТ: =^ АТ 97/00044 (03.03.1997) © (87) Публикация РСТ: = М/О 97/33005 (12.09.1997) Сс' (98) Адрес для переписки: 119034, Москва, Пречистенский пер., 14, ...

Method of producing granular metallic iron

FIELD: metallurgy. SUBSTANCE: invention relates to a method of producing granular metallic iron. Method comprises steps of agglomerating a mixture comprising an iron oxide-containing material and a carbonaceous reducing agent, loading the resulting agglomerate in the hearth of a furnace and heat said agglomerate, thereby reducing the iron oxide in the agglomerate, and melting the reduced iron by additional heating to cause consolidation of the reduced iron. When the agglomerate is heated in the hearth of the heating furnace, the relation between the mass ratio (mass%) of the volatile substance contained in the carbonaceous reducing agent and the average flow rate (m/s) of the atmospheric gas in the heating furnace satisfies the following formula: mass ratio of the volatile matter ≤-4.62 × average gas flow rate +46.7. EFFECT: invention increases the yield of granular metallic iron and reduces production time. 3 cl, 5 dwg, 5 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 669 653 C2 (51) МПК C21B 13/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 13/12 (2006.01) (21)(22) Заявка: 2016146945, 13.05.2015 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): КАБУСИКИ КАЙСЯ КОБЕ СЕЙКО СЕ (КОБЕ СТИЛ, ЛТД.) (JP) Дата регистрации: 12.10.2018 (56) Список документов, цитированных в отчете о поиске: JP 2008-121085 A, 29.05.2008. JP 15.05.2014 JP 2014-101724 (43) Дата публикации заявки: 19.06.2018 Бюл. № 2010-189762 A, 02.09.2010. EP 2418292 A1, 15.02.2012. RU 2254376 C2, 20.06.2005. 17 (45) Опубликовано: 12.10.2018 Бюл. № 29 (86) Заявка PCT: C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.12.2016 JP 2015/063755 (13.05.2015) (87) Публикация заявки PCT: 2 6 6 9 6 5 3 WO 2015/174450 (19.11.2015) R U 2 6 6 9 6 5 3 Приоритет(ы): (30) Конвенционный приоритет: R U 13.05.2015 (72) Автор(ы): О Сёрин (JP), ИТО Сюдзо (JP) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, ...

Method and device for obtaining raw material synthesis-gas

FIELD: chemistry. SUBSTANCE: invention relates to field of chemistry. To obtain gas, which contains hydrogen and carbon monoxide, source of discharged gas from metallurgical processes is connected with pipeline with converter 7, for, at least part of discharged gas to be subjected to CO conversion with addition of water steam with formation of raw material synthesis gas. In addition, source of discharged gas is connected through pipeline with steam generator 10, for the next part of discharged gas to be at least partially burned in steam generator 10 with formation of water steam. Formed water steam through line of steam 9a is brought to converter 7. For intermediate storage of part of discharged gas before its burning in steam generator 10 provided is reservoir 22, to compensate fluctuations of quantity and/or burning heat in discharged gas. EFFECT: invention makes it possible to utilise discharged gas and apply it as raw material for processes of chemical synthesis. 31 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 515 325 C2 (51) МПК C01B 3/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2011125340/05, 03.11.2009 (24) Дата начала отсчета срока действия патента: 03.11.2009 (72) Автор(ы): МИЛЛЬНЕР Роберт (AT) (73) Патентообладатель(и): СИМЕНС ФАИ МЕТАЛЗ ТЕКНОЛОДЖИЗ ГМБХ (AT) (43) Дата публикации заявки: 27.12.2012 Бюл. № 36 R U Приоритет(ы): (22) Дата подачи заявки: 03.11.2009 (45) Опубликовано: 10.05.2014 Бюл. № 13 A3, 07.08.1990. SU 747402 A3, 23.07.1980. RU 2213787 C2, 10.10.2003. EP 0200880 A2, 12.11.1986. WO 0230553 A2, 18.04.2002. GB 2076858 A, 09.12.1981. US 4108636 A, 22.08.1978 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.06.2011 2 5 1 5 3 2 5 (56) Список документов, цитированных в отчете о поиске: US 4062673 A, 13.12.1977. SU 1584757 2 5 1 5 3 2 5 R U EP 2009/064494 (03.11.2009) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2010/057767 (27.05.2010) ...

System for energy optimization in a plant for producing direct-reduced metal ores

본 발명은, 하나 이상의 환원 유닛(12), 상기 환원 유닛(12)의 상류에 배열된 가스 가열 장치(10) 및 연관된 압축 장치(4, 4a, 4b)를 갖는 가스 혼합물들의 분리 장치(7, 7a, 7b)를 포함하는, 직접 환원 금속 광석들, 특히 직접 환원철을 생산하기 위한 플랜트(3)에서의 에너지 최적화를 위한 시스템에 관한 것이다. 게다가, 프로세스 가스(2, 2a, 2b)들의 일부는 선철 생산을 위한 하나 이상의 플랜트(1, la, 1b), 특히 제련 환원 플랜트(smelting reduction plant)로부터 공급 라인에 의해 직접 환원 금속 광석들을 생산하기 위한 플랜트(3)에 공급된다. 본 발명에 따른 시스템에서, 터빈(8, 8a, 8b), 특히 팽창 터빈은, 가스 혼합물들의 분리를 위한 장치(7, 7a, 7b)와 환원 유닛(12)의 상류에 배열된 가스 가열 장치(10) 사이에 끼움 장착되어, 가스 혼합물들의 분리를 위한 장치(7, 7a, 7b)와 환원 유닛(12) 사이의 압력 강하가 직접 환원 금속 광석들의 생산을 위한 플랜트(3)의 추가의 구성요소(4, 4a, 4b, 15, 15a, 15b)들의 작동을 위해 사용될 수 있는 에너지의 형태들, 특히 전기 에너지 및/또는 기계 에너지로 전환된다. 본 발명에 의해, 플랜트(3)의 에너지 소비가 감소되며, 이에 따라 작동 비용들이 단순하고 유리한 방식으로 저하되는데, 이는 가스 혼합물들의 분리를 위한 장치(7, 7a, 7b)와 환원 유닛(12) 사이의 압력 강하가 터빈(8, 8a, 8b)의 사용에 기인하여 경제적으로 사용되기 때문이다. The present invention relates to a device for separating gas mixtures (7, 7) having one or more reduction units (12), a gas heating device (10) arranged upstream of the reduction unit (12) and associated compression devices 7a, 7b), particularly a system for energy optimization in a plant (3) for producing directly reduced iron. In addition, some of the process gases 2, 2a, 2b may be used to produce reduced metal ores directly from a feed line from one or more plants 1, la, 1b for producing pig iron, in particular from a smelting reduction plant To the plant (3). In the system according to the invention, the turbines 8, 8a, 8b, and in particular the expansion turbine, comprise a device 7, 7a, 7b for the separation of gaseous mixtures and a gas heating device 10) so that the pressure drop between the apparatus (7, 7a, 7b) for the separation of gaseous mixtures and the reduction unit (12) is further reduced by the additional components of the plant (3) Especially electrical energy and / or mechanical energy, which can be used for the operation of the electrodes 4, 4a, 4b, 15, 15a, 15b. By means of the invention, the energy consumption of the plant 3 is reduced, whereby the operating costs ...

Recyclin method of waste material by using of coal based iron making process

公开了一种用还原熔化装置在煤基炼铁工艺中回收废料的方法，该装置包括用于还原矿石和副原料的还原炉、将还原炉中矿石还原-熔化成热金属的的熔融气化炉、收集熔融气化炉废气中的细粉尘然后将其运送到熔融气化炉并将去除细粉尘后的废气作为还原气体吹入还原炉的旋风式集尘器、一端接于旋风式集尘器，另一端接于熔融气化炉、用来熔化和冷凝细粉尘并把其吹入熔融气化炉的粉尘燃烧器。煤基炼铁工艺回收方法包括以下步骤：收集并干燥废料使其总铁、C、CaO和MgO组分的总量达到至少50重量%；分选干燥后的废料使其粒径为5mm或更少；将分选后的废料通过粉尘燃烧器吹入熔融气化炉。

Method for achieving low sulfur levels in the dri product from iron oxide reducing kilns

Direct reduction of iron is made using a high sulphur (up to 3%) carbonaceous fuel. The ore with a particle size below 0.125 inch is mixed with 1-5% of a sulphur control agent to a similar size and fed into a kiln at about 750 deg.C to remove pyritic and organic sulphur. The material is discharged from the kiln at 1070 (±) 15 deg.C to avoid sulphur absorption while the level of fixed carbon in the material is 5-15%. The sulphur control agent is removed by screening before returning the charred reducing agent to the kiln. The method allows coal to be used as the sole source of heat for the ore reduction process.

Process for producing liquid metal and facilities for carrying out the process

광석 및 플럭스(flux)를 포함하는 장입물로부터 액상 금속을 제조하는 공정에 있어서, 광석은 최소한 하나의 환원대(reduction zone)인 예열대(5), 예비 환원 대(7) 및 최종 예비 환원대(8)에서 해면철로 바로 환원되고, 이 해면철은 탄소 운반체 및 산소 함유 가스의 공급으로 용융 가스화대(11)에서 플럭스와 함께 용융되며, 환원 가스로서 작용하는 탄소 및 수소 함유 공정 가스가 발생되고, 이것은 예열대(5), 예비 환원대(7) 및 최종 예비 환원대(8)에 공급되어 여기에서 반응된 후 회수되고, 슬래그 형성 플럭스 특히, 탄산칼슘, 돌로마이트 등은 예열대(5), 예비 환원대(7), 최종 예비 환원대(8) 및 용융 가스화대(11)와는 별도인 하소대(26')에서 공정 가스에 의하여 하소된다. 환원 공정을 교란시키지 않고 슬래그 형성 플럭스를 임의의 원하는 입자로 할 수 있도록, 하소대(26')는 원료 장입을 위하여 예열대(5), 예비 환원대(7) 및 최종 예비 환원대(8)에 병렬 배치되어 용융 가스화로와 연결되고, 하소된 플럭스는 용융 가스화로(10)에 직접 장입된다. In the process of producing liquid metal from a charge comprising ore and flux, the ore is at least one reduction zone preheating zone (5), preliminary reduction zone (7) and final preliminary reduction zone. (8) is directly reduced to sponge iron, which is melted together with the flux in the molten gasifier (11) by the supply of a carbon carrier and an oxygen-containing gas to generate a carbon and hydrogen-containing process gas that acts as a reducing gas. This is supplied to the preheating stage (5), preliminary reduction stage (7) and the final preliminary reduction stage (8), and then recovered and reacted therewith, and slag forming fluxes, especially calcium carbonate, dolomite, etc. It is calcined by the process gas in the calcination zone 26 ′ which is separate from the preliminary reduction zone 7, the final preliminary reduction zone 8 and the melt gasification zone 11. In order to make the slag-forming flux into any desired particles without disturbing the reduction process, the calciner 26 'is preheated 5, preliminary reducing 7 and final preliminary reducing 8 for raw material loading. Disposed in parallel to the melt gasifier, and the calcined flux is charged directly into the melt gasifier 10.

Method and apparatus for producing liquid pig iron or primary steel products

석탄과 가스를 함유한 산소가 첨가되는 용락식 화로 내에서 덩어리 형태의 철을 함유한 재료로부터 용융 선철 또는 강의 중간 제품을 생산하는 방법으로서, 환원 가스가 동시에 형성되고 철을 함유한 재료가 용융된다. 석탄 조각은 상부로부터 용락식 화로 내로 유입되어, 철을 함유한 재료와 함께 용락식 화로 내의 정적 베드를 형성하며, 상기 석탄은 정적 베드 상의 돔 영역 내로 휘발성 탄화 수소의 일부분을 배출시키고 분진 버너는 정적 베드의 표면에서 소정의 각도로 상부로부터 경사진다. 분진 버너는 미세한 입자 형태의 탄소 캐리어 내에서 탄소의 40 %이상의 비율의 연소로 CO 2 를 형성하는 방식으로 작동되고 제어된다. 본 발명은 상기 방법을 수행하는 장치에 관한 것이다. 본 발명은 환원 가스를 갖는 용락식 화로로부터 배출된 분진의 양을 감소시키고 소정의 배출된 분진이 응결되는 경향을 감소시킬 수 있다. A method of producing molten pig iron or steel intermediate product from a mass of iron-containing material in a molten iron furnace in which oxygen containing coal and gas is added, wherein a reducing gas is simultaneously formed and the iron-containing material is melted. . Coal flakes enter the melt furnace from the top, forming a static bed in the melt furnace with the iron-containing material, which discharges a portion of the volatile hydrocarbons into the dome area on the static bed and the dust burner is static. It is inclined from the top at a predetermined angle on the surface of the bed. The dust burner is operated and controlled in such a way as to form CO 2 with combustion of at least 40% of the carbon in the carbon carrier in the form of fine particles. The present invention relates to an apparatus for performing the method. The present invention can reduce the amount of dust emitted from the melting furnace with reducing gas and reduce the tendency of certain discharged dust to condense.

Process for producing sponge iron by direct reduction of iron oxide-containing materials

산화철 함유물질을 직접환원에 의하여 해면철을 생산하는 공정에 있어서, 합성가스를 산화철 함유물질의 직접환원에서 형성되는 톱가스와 혼합시키고, CO- 및 H 2 - 함유 환원가스로서 사용하여 직접환원 및 산화철 함유물질을 환원온도로 가열한다. 제철 시, 특히 정련공정에서 경제적으로 효과적인 방식으로 에너지를 절약할 수 있도록, 직접환원은 다음과 같이 행해진다: 환원가스 외에, 천연가스와 같은 탄소함유가스 또는 고품위 탄화수소를 함유한 가스가 환원에 사용되고, 산화철 함유물질은 완전환원에 필요한 기간을 초과하는 소정의 시간동안 환원가스 및 추가로 공급된 탄소함유가스에 노출되고, 환원가스내의 CO/CO 2 비율은 2 ∼ 5 범위, 바람직하게는 2.5 이상으로 조정된다.

Device for reducing iron oxides

Method of production of conversion pig iron

FIELD: metallurgy; production of conversion pig iron. SUBSTANCE: proposed method includes reduction of iron ore in reducing shaft to sponge iron which is introduced into upper part of melting gasificator where it is molten by means of gasifying agent and oxygen-containing gas forming molten conversion pig iron. Gasifying agent is also introduced into upper part of melting gasificator. Reducing gas formed simultaneously is discharged from upper part melting gasificator and is fed to reducing shaft for reduction of ferric oxide. Sponge iron introduced into melting gasificator possesses high degree of metallization exceeding 92%. Ferric oxide is additionally introduced into melting gasificator for reducing the degree of metallization to about 88%. EFFECT: functional decoupling of reducing shaft and melting gasificator excluding adverse effect on each other. 9 cl, 1 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) (13) 2 246 543 C2 C 21 B 11/00, 13/14 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2002111002/02, 28.11.2000 (72) Àâòîð(û): ÂÓËÅÒÈÖ Áîãäàí (DE) (24) Äàòà íà÷àëà äåéñòâè ïàòåíòà: 28.11.2000 (73) Ïàòåíòîîáëàäàòåëü(ëè): Ô¨ÑÒ-ÀËÜÏÈÍÅ ÈÍÄÓÑÒÐÈÀÍËÀÃÅÍÁÀÓ ÃÌÁÕ óíä ÊÎ (AT) (30) Ïðèîðèòåò: 23.12.1999 DE 19963609.5 R U (43) Äàòà ïóáëèêàöèè çà âêè: 10.04.2004 (45) Îïóáëèêîâàíî: 20.02.2005 Áþë. ¹ 5 (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 23.07.2002 (86) Çà âêà PCT: EP 00/11870 (28.11.2000) 2 2 4 6 5 4 3 R U Àäðåñ äë ïåðåïèñêè: 193036, Ñàíêò-Ïåòåðáóðã, à/ 24, ÍÅÂÈÍÏÀÒ, ïàò.ïîâ. À.Â.Ïîëèêàðïîâó, ðåã.¹ 0009 (54) ÑÏÎÑÎÁ ÏÐÎÈÇÂÎÄÑÒÂÀ ÏÅÐÅÄÅËÜÍÎÃÎ ×ÓÃÓÍÀ (57) Ðåôåðàò: øàõòó äë âîññòàíîâëåíè îêñèäà æåëåçà. Èçîáðåòåíèå îòíîñèòñ ê ïðîèçâîäñòâó Ãóá÷àòîå æåëåçî, ââîäèìîå â ïëàâèëüíûé ïåðåäåëüíîãî ÷óãóíà. Ñïîñîá âêëþ÷àåò ãàçèôèêàòîð, èìååò âûñîêóþ ñòåïåíü âîññòàíîâëåíèå æåëåçíîé ðóäû â ìåòàëëèçàöèè, ïðåâûøàþùóþ 92%. Ïðè ýòîì â âîññòàíîâèòåëüíîé øàõòå äî ãóá÷àòîãî æåëåçà, ïëàâèëüíûé ...

Method for producing molter pig iron

본 발명은 예비-환원 단계 후 최종 환원 단계로 철광석을 직접 환원시키는 것을 특징으로 하는 주조된 무쇠철의 제조방법 및 제조장치에 관한 것으로서, 그 제조방법은 예비-환원단계에서, 철광석이 주조 사이클론(1)내에서 최종 환원 단계로부터 나온 처리 기체를 환원시킴으로써 예비환원시키고, 후-연소는 주조 사이클론내에서 처리 기체를 환원시킴으로써 일어나서 주조 사이클론내 상기 철광석이 적어도 일부가 용융되며, 일부가 용융된 철광석이 석탄 및 산소의 공급에 의하여 최종 환원이 일어난 사이클론 밑에 위치하는 야금 용기(4)내로 아래방향으로 통과하여 처리 기체를 환원시키고, 일부의 후-연소가 공급된 산소에 의하여 야금 용기내 환원 처리 기체내에서 발생하며, 야금 용기를 나오는 기체의 후-연소 비율은 0.55 이하이고, 상기 석탄이 슬랙층(7)내로 직접 공급되어 야금 용기내 일부의 후-연소가 상기 슬랙층내에서 적어도 일부 발생하는 것을 특징으로 한다. The present invention relates to a method and apparatus for producing cast iron, which is characterized in that the iron ore is directly reduced to a final reduction step after the pre-reduction step. Pre-reduction by reducing the process gas from the final reduction step in 1) and post-combustion occurs by reducing the process gas in the casting cyclones such that at least some of the iron ore in the casting cyclones melts and some of the molten iron ores In the metallurgical vessel, reduced oxygen in the metallurgical vessel by passing oxygen downwardly into the metallurgical vessel (4) located under the cyclone where the final reduction occurred by the supply of coal and oxygen, At a post-combustion rate of less than 0.55, and the coal Raekcheung 7 is directly supplied into the inside after a part of the metallurgical vessel is characterized in that at least some combustion occurs in the slag layer.

Method for producing molten iron by arc heating

Method and apparatus (alternatives) for producing iron and/or alloys thereof from iron oxide materials

FIELD: ferrous metallurgy. SUBSTANCE: prior to feeding to melting furnace, iron oxide feedstock material is subjected to partial reduction carried out in vertical flue, into which iron oxide material and off-gas are directed, off-gas being also subjected to partial afterburning. Simultaneously, gas cooling takes place. Gas flow rate through vertical flue is maintained equal to 3-15 m/s, and gas temperature at vertical flue inlet is maintained at level 1800 C, and at its outlet at 800-1000 C. Iron oxide feedstock material must have particle size 0.1 to 8 mm. In additional, slag-forming and/or reducing and/or coalescence-preventing additives are also introduced into vertical flue. In accordance with one of method alternatives, partially reduced material is separated from gas flow and portion of separated partially reduced material is fed into melting bath. Proposed apparatus for carrying out proposed method comprises melting furnace. Off-gas discharge conduit is arranged vertically and connected to iron oxide material charging means arranged in lower portion of conduit, while upper portion of conduit or in vicinity to it has separation means. Apparatus further comprises separation means and off-gas flow accelerating means arranged upstream of iron oxide material charging means. EFFECT: invention is useful for iron production. 18 cl, 2 dwg Ё569110с ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ “” 2 077 595 ' 13) Сл С 21В 13/14 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4895752/02, 20.12.1989 (30) Приоритет: 20.12.1988 АЦ Р. 2047 (46) Дата публикации: 20.04.1997 (56) Ссылки: Заявка Австралии М 74409, кл. С 21 С 5/34, 1981. Заявка Австралии М 280044, кл. С 21 В 13/4, 1984. Заявка Австралии М 69827, кл. С 21 В 1100, 1987. (86) Заявка РСТ: АЦ 89/00544 (20.12.89) (71) Заявитель: СИ-АР-ЭЙ Сервисиз Лимитед (АЦ) (72) Изобретатель: Родней Джеймс Драй[АЧ], Роберт Дэвид ла Наузе[АЦ] (73) Патентообладатель: СИ-АР-ЭЙ ...