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 ...

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.

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. ...

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 ...

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 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 ...

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 ...

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 ...

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 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 ...

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。

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 ...

Verfahren zum verwerten von schlacke

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.

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: ...

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 ...

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, ...

Device for reducing iron oxides

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 FOR PRODUCING VANADIUM CAST IRON FROM IRON AND NADIUM RAW MATERIALS

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2020 108 308 A (51) МПК C21B 13/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2020108308, 26.02.2020 Приоритет(ы): (22) Дата подачи заявки: 26.02.2020 (43) Дата публикации заявки: 26.08.2021 Бюл. № 24 (72) Автор(ы): Лисиенко Владимир Георгиевич (RU), Чесноков Юрий Николаевич (RU), Лаптева Анна Викторовна (RU) A 2 0 2 0 1 0 8 3 0 8 R U Стр.: 1 A (57) Формула изобретения Способ выплавки ванадиевого чугуна в ЭДП путем прямого восстановления металлов из оксидсодержащих материалов, включающий металлизацию путем прямого восстановления оксидов металлов и расплавление полученного продукта, при котором оксидсодержащие материалы в смеси с твердым восстановителем непрерывно подают через полость полого электрода в зону электродуговой печи, находящуюся между донным и полым электродами, а прямое восстановление оксидов металлов и их расплавление осуществляют за счет тепла Ленца-Джоуля, выделяющегося в межэлектродном пространстве электродуговой печи, содержащей донный электрод и, по крайней мере, один полый электрод, при этом оксидсодержащие материалы и твердый восстановитель подают в полость электрода в окатанном или гранулированном состоянии, отличающийся тем, что в смесительный агрегат загружают в качестве оксидсодержащих материалов железованадиевый концентрат с концентрацией ванадия 0,1 ÷ 1,7%, в качестве твердого восстановителя загружают измельченный малосернистый каменный уголь, а также измельченный известняк для получения основности шлака более 1,4, полученную смесь из смесительного агрегата подают в полость полого электрода. 2 0 2 0 1 0 8 3 0 8 (54) СПОСОБ ПОЛУЧЕНИЯ ВАНАДИЕВОГО ЧУГУНА ИЗ ЖЕЛЕЗОВАНАДИЕВОГО СЫРЬЯ R U Адрес для переписки: 620002, Свердловская обл., г. Екатеринбург, ул. Мира, 19, ФГАОУ ВО "УРФУ", Центр интеллектуальной собственности, Маркс Т.В. (71) Заявитель(и): Федеральное государственное автономное образовательное учреждение высшего образования "Уральский ...

A kind of method that high calcium v-bearing steel slag smelts the rich vanadium pig iron

一种高钙含钒钢渣冶炼富钒生铁的方法，属于冶金渣的应用技术领域，该方法以含钒钢渣和磁铁矿(或含钒磁铁矿)为原料，加入适量的溶剂，在矮炉身矿热炉中埋弧冶炼。本方法可利用低级的碳质还原剂，其中粒度小于20mm的用作还原剂，粒度为20mm～80mm的用于在电弧燃烧区形成“残碳层”。根据电炉容量定时放铁排渣，分离炉渣和铁水，铁水冷却后即为富钒生铁。其中，所述高钙含钒钢渣为含钒铁水经转炉冶炼后所剩的渣。本发明可将含钒钢渣中90％的钒富集在生铁中得到富钒生铁，对钢渣进行了很好的再利用，且生产工艺简单、可操作性强，生产成本低，便于在工业生产中展开。

Method and device for direct reduction with electrically heated reducing gas

FIELD: metal reduction. SUBSTANCE: group of inventions relates to a method and device for direct reduction of metals. The method for direct reduction of metal oxides (2) is carried out using a reducing gas, which is based on a precursor gas (15, 22), which is based on a reforming gas obtained by catalytic reforming of a hydrocarbon-containing gas (4) in a reforming unit (3). In the preparation of the reducing gas, the precursor gas based on the reforming gas is heated by electric energy. At least a partial amount of electrical energy is introduced into the precursor gas (15, 22) by plasma (16). The device (1) for direct reduction of metal oxides (2) by reducing gas includes a catalytic reforming unit (3) for the production of reforming gas, a reforming gas line (5) for removing reforming gas from the catalytic reforming unit (3), a reduction unit (9), a reduction gas line (8) for the introduction of reducing gas into the recovery unit (9) and the precursor gas line (6). Moreover, the precursor gas line leaving the reforming gas line includes a device (7, 10, 17) for electric heating of the gas, and the precursor gas line (6) exits the reforming gas line (5) and enters the reduction gas line (8). In this case, the electric gas heating device (10) includes at least two plasma burners. EFFECT: increase in production capacity is provided. 19 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 771 127 C1 (51) МПК C21B 13/00 (2006.01) C21B 13/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 13/004 (2022.02); C21B 13/0073 (2022.02); C21B 2100/22 (2022.02); Y02P 10/134 (2022.02); Y02P 10/143 (2022.02) (21)(22) Заявка: 2021120201, 16.12.2019 16.12.2019 Дата регистрации: 26.04.2022 (73) Патентообладатель(и): ПРАЙМЕТАЛЗ ТЕКНОЛОДЖИЗ АУСТРИА ГМБХ (AT) 17.12.2018 EP 18213141.7 (45) Опубликовано: 26.04.2022 Бюл. № 12 (86) Заявка PCT: R U 2 7 7 1 1 2 7 C 1 EP 2019/085350 (16.12.2019) (87) Публикация заявки PCT: WO ...

Method of steel making and device for its embodiment

FIELD: metallurgy. SUBSTANCE: method of steel making in submerged-resistor induction furnace includes heating of iron-containing burden and carbon-containing material, direct reduction and melting of iron-containing burden. Temperature of liquid product is maintained at the level exceeding the temperature of its liquids, preferably, by 50-100 C by regulating heat quantity supplied to furnace and/or rate of burden charging into furnace during reduction and melting processes. Liquid steel is discharged from furnace, preferably, at temperatures in the range from 1580 to 1620 with content of carbon about 0.1%. Method allows to exclude equipment for production of liquid pig iron due to direct reduction of iron-containing burden into steel in submerged-resistor induction furnace from burden containing reduced quantity of phosphorus to decrease flux consumption and to prolong service life of refractory lining. EFFECT: higher efficiency. 21 cl, 4 dwg сс с ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ” 2 127 321 (51) МПК (13) СЛ С 21С 5/52, С 21 В 13/12 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94021346102, 15.06.1994 (30) Приоритет: 16.06.1993 ГА 93/4272 (46) Дата публикации: 10.03.1999 (56) Ссылки: Похвиснеев А.Н. и др. Внедоменное получение железа за рубежом. - М.: Металлургия, 1964, с. 257, 260 - 261. $ 1822417, АЗ, 15.06.93. ЗЦ 709688, А, 18.01.80. ЗЕ 360619, А, 01.10.73. ЗЕ 396227, А, 12.09.7Г. ЗЕ 396228, А, 12.09.77. 4$ 3235314 А, 15.02.66. Ц$ 4010029, А, 01.03.77. (98) Адрес для переписки: 103735, Москва, ул.Ильинка, 5/2, Союзпатент, Патентному поверенному Дудушкину С.В. (71) Заявитель: Ипкор ЕН ВЕ (М) (72) Изобретатель: Луис Йоханнес Фаури (7А) (73) Патентообладатель: Ипкор ЕН ВЕ (М) (54) СПОСОБ ПОЛУЧЕНИЯ СТАЛИ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ (57) Реферат: Изобретение относится к области металлургии и позволяет исключить оборудование для получения жидкого чугуна за счет прямого — восстановления железосодержащей ...

Device for detaching boom of slag skimmer

본 발명의 목적은 슬래그 스키머 붐대의 분리 결합을 용이하게 할 수 있도록 하여 효율적인 스키머작업과 후공정 작업으로의 안정적인 용탕공급이 이루어지도록 한 슬래그 스키머의 붐대 분리장치를 제공함에 있다. 이에 본 발명은 슬래그 스키머에 있어서, 상호 분리된 본체측 붐대와 패들측 붐대의 연결부위에 각 설치되는 체결부와, 상호 체결된 상태에서 패들측 붐대를 회동시켜 래들로부터 들어올리기 위한 회동수단을 포함하는 것을 특징으로 하는 슬래그 스키머의 붐대 분리장치를 제공한다. 붐대, 지지핀, 지지홈, 고정돌기, 걸림턱, 회전판

Fluxing agent for quickly melting waste vanadium slag, preparation method and melting method thereof

本发明提供一种绝废钒渣快速熔分的助熔剂、其制备方法及熔分方法，涉及钒渣预处理技术领域。一种绝废钒渣快速熔分的助熔剂，制备绝废钒渣快速熔分的助熔剂的主要原料包括：石灰、硅石、高锰矿和氧化铝。该助熔剂熔分效果好，生产成本低。上述绝废钒渣快速熔分的助熔剂的制备方法，包括：将原料混合。该方法操作简单，可控性强，可大规模生产。一种绝废钒渣的快速熔分方法，包括：在炉内加入铁块，升温使铁块熔化，炉内通电恒温，将绝废钒渣原料和上述绝废钒渣快速熔分的助熔剂加入炉内进行熔分，熔分完成后，分离铁水和钒渣。该方法操作简单易行，熔分效果好，生产成本低，有效回收钒渣和铁。

Electric furnace with insulated electrodes and method for producing molten metal

(57)【要約】 部分的に絶縁された電極（３７）を有している電気アーク炉（１０）が、スラグ（３０）をほとんど又は全く産出しない鉄源から鋳鉄用銑鉄のような溶融金属（２８）を生産する。炉（１０）は金属装入物（２６）内へ深く沈める少なくとも１つの絶縁された電極（３７）を有している。絶縁コーテイングは、電極の周りに巻かれた繊維質マット（４８）又はスプレーコーテイング（７２）とすることが出来る。ある実施例においては、電極（１５６）は、電気的伝導性部材（１４２）と連結する第１端部（１７６）にあるカップリング（１７２）と、電極柱体を形成するため隣接する電極と連結するため第２端部（１７８）にあるカップリング（１７２）と、を有している。これらのカップリング（１７２）はそれらの端部にある内ねじ付きの凹み（１６６、１６８）とすることが出来る。外ねじ付きカップリング部材（１７２）は２つ又はそれ以上の電極（１５７）を一緒に連結するため電極（１５７）の凹み（１６６、１６８）内へ螺合可能である。

Combined steelmaking equipment and method

본 발명은 환원로, 스크랩예열로, 용융로 및 전기로를 복합형으로 배치하여 용강을 제조하는 방법 및 장치에 관한 것이다. The present invention relates to a method and apparatus for producing molten steel by arranging a reducing furnace, a scrap preheating furnace, a melting furnace and an electric furnace in a complex form. 본 발명은 철광석이 광석장입구를 통하여 장입되고, 상기 장입된 철광석을 하부에 연결된 제 1가스도관을 통하여 공급되는 배가스에 의해 환원반응시키며, 상기 환원된 환원철을 외부로 배출하는 제 1,2환원철배출기를 하부에 장착한 환원로;상기 스크랩이 스크랩장입구를 통하여 장입되고, 상기 장입된 스크랩을 하부에 연결된 제 2가스도관을 통하여 공급되는 배가스에 의해 예열하고, 상기 예열된 스크랩을 외부로 배출하는 스크랩배출기를 하부에 장착한 스크랩예열로; 상기 환원로의 제 1환원철공급관과 상기 스크랩예열로의 스크랩공급관이 연결되고, 상기 환원철과 스크랩이 혼합되는 로내로 산소를 공급하는 상취용 산소랜스와 저취용 산소공급구를 구비하며, 일반탄, 부원료를 공급하는 일반탄공급라인을 구비하고, 로상부를 밀폐하는 상부커버에 상기 제 1,2가스도관이 분기되는 메인가스도관으로 환원용 배가스를 배출하는 가스배출구를 갖추는 한편, 하부일측에 구비된 출강구를 통하여 용강 및 슬래그를 주기적으로 배출하는 융융로; 상기 환원로의 제 2환원철공급관을 통하여 공급되는 환원철과 내부장입되는 스크랩을 혼합하여 전극봉의 열원으로서 용강을 제조하는 전기로;를 포함하여 구성되며, 상기 환원로로부터 배가스가 배출되는 배가스관과 상기 스크랩예열로로부터 배가스가 배출되는 배가스관에는 배가스에 포함된 미분진을 살수에 의해 포집하여 청정한 배가스를 플래어 스택으로 배출하는 수냉식 스크러버를 각각 갖추어 구성함을 특징으로 한다. In the present invention, the iron ore is charged through the ore entrance, the charged iron ore is reduced by the exhaust gas supplied through the first gas conduit connected to the lower, the first and second reduced iron to discharge the reduced reduced iron to the outside Reduction furnace equipped with a discharger in the lower portion; The scrap is charged through a scrap inlet, the charged scrap is preheated by the exhaust gas supplied through a second gas conduit connected to the lower, and discharged the preheated scrap to the outside Scrap preheating furnace equipped with a scrap ejector to the bottom; The first reduction iron supply pipe of the reduction furnace and the scrap supply pipe of the scrap preheating furnace is connected, and having a top oxygen lance and a low odor oxygen supply port for supplying oxygen into the furnace in which the reduced iron and scrap is mixed, general coal, A general coal supply line for supplying subsidiary materials is provided, and a gas ...

Continuous HBI Manufacturing Unit with concurrent heating Unit

본 발명은 보열장치를 구비한 연속식 고온 브리켓철(HBI) 제조장치에 관한 것으로, 직접환원철 분말을 이용한 고온 브리켓철(HBI) 생산을 위한 브리켓철 제조장치에 있어서, 직접환원철 분말을 공급받아 일정 온도 상태를 유지시켜주면서 연속적으로 직접환원철 분말을 성형하기 위하여 공급하는 것으로, 상기 환원로에서 배출된 상태에 해당하는 온도 또는 해당 온도 이상의 온도로 유지될 수 있도록 히터부를 통해 제어하며, 상기 환원로에서 공급되는 직접환원철 분말의 외부 공기 접촉을 방지하기 위하여 불활성 상태를 유지하는 보열로, 상기 보열로를 통해 일정 온도를 유지하면서 공급된 직접환원철 분말을 일정크기로 열간 성형하기 위하여 챔버 내에 유입된 직접환원철 분말을 가압 성형하여 일정 크기의 성형체로 성형하는 열간성형기 및 상기 열간성형기를 통해 성형된 브리켓철(HBI)을 철광 재료화 하기 위해 용융하는 전기로를 포함하여 구성된다. The present invention relates to a continuous high-temperature briquette iron (HBI) manufacturing apparatus having a heat-retaining device. It is continuously supplied to form directly reduced iron powder while maintaining the temperature state. A heating furnace that maintains an inactive state in order to prevent the supplied directly reduced iron powder from contacting the outside air, and the direct reduced iron introduced into the chamber to hot-form the supplied directly reduced iron powder into a predetermined size while maintaining a constant temperature through the heating furnace. It is configured to include a hot forming machine that presses and molds powder into a compact of a certain size, and an electric furnace that melts briquette iron (HBI) formed through the hot forming machine to make iron ore material.

METHOD OF PLASMA-CHEMICAL PROCESSING OF SUBSTANCES AND DEVICE FOR ITS IMPLEMENTATION

1. Способ плазмохимической переработки веществ, характеризующийся тем, что исходное перерабатываемое вещество, например минеральное сырье в виде железной руды или соответствующих руд цветных металлов, или угля, или горючих сланцев, торфа и т.п., предварительно измельчают и смешивают с тонко помолотым коксом или другим углеродсодержащим веществом, создавая тем самым исходную, например, водную технологическую суспензию, которую затем с применением насосов высокого давления подают в верхнюю часть специально создаваемой технологической камеры и через соответствующий входной канал со струеобразующим насадком, который специально электроизолируют от корпуса и подключают к применяемому импульсному высоковольтному источнику тока, так что в дальнейшем организуют в упомянутой технологической камере истечение исходных струй суспензии в направлении сверху вниз с их завершающей контактной встречей с установленным в нижней части технологической камеры и заземленным с ней электродом, выполненным, в частности, из кокса, причем указанные струи предварительно с помощью специального гидравлического прерывателя дробятся и их касание нижнего электрода не является для большинства из них одновременным, и при этом по периметру движения струй специально создают электроизолированные газовые каналы, на верхней стороне которых устанавливают импульсные лазеры, лучи которых поочередно сканируют по нижнему электроду в соответствии с заданным технологическим регламентом, и тем самым в итоге создают с помощью применения внешнего источника импульсных электроразрядов соответствующее образование в зоне истечения струй те� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2008 152 503 (13) A (51) МПК C22B 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2008152503/02, 23.12.2008 (43) Дата публикации заявки: 10.07.2010 Бюл. № 19 (72) Автор(ы): Максимов Лев Николаевич (RU) A 2 0 0 8 1 5 2 5 0 3 R U Ñòð.: 1 ru A (57) Формула ...

A kind of networking furnace melting management system based on PLC

本发明公开了一种基于PLC的网络化电炉熔化管理系统，包括HMI设备、PLC控制器、远程IO站、铁水测温装置、大屏显示装置、远程控制面板、电炉熔化控制板、以太网交换机和客户通讯交换机。所述铁水测温装置、大屏显示装置和电炉熔化控制板分别配置有以太网模块；所述HMI设备、通过所述以太网交换机与所述PLC控制器进行网络连接；所述远程IO站、铁水测温装置、大屏显示装置、远程控制面板、电炉熔化控制板分别通过所述以太网交换机与所述PLC控制器进行网络连接；所述PLC控制器通过所述客户通讯交换机与客户的MES系统进行数据交互。本发明的基于PLC的网络化电炉熔化管理系统，可以改善工业电炉的工况条件。

METHOD FOR PRODUCING PIG IRON, DEVICE FOR ITS PRODUCTION AND PIG IRON OBTAINED BY THE SPECIFIED METHOD

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 141 749 A (51) МПК C21B 11/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018141749, 29.05.2017 (71) Заявитель(и): ТЕНОВА С.П.А. (IT) Приоритет(ы): (30) Конвенционный приоритет: 31.05.2016 IT 102016000056295 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.11.2018 R U (43) Дата публикации заявки: 27.05.2020 Бюл. № 15 (72) Автор(ы): МЕМОЛИ Франческо (US), ДЖАВАНИ Чезаре (IT), РЕАЛИ Сильвио Мариа (IT), ШУП Кайл Джеймс (US) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2017/207472 (07.12.2017) R U (54) СПОСОБ ПРОИЗВОДСТВА ЧУГУНА, УСТРОЙСТВО ДЛЯ ЕГО ПРОИЗВОДСТВА И ЧУГУН, ПОЛУЧЕННЫЙ УКАЗАННЫМ СПОСОБОМ (57) Формула изобретения 1. Способ производства чугуна, начиная с предварительно восстановленной железной руды (ПВЖ), посредством электродуговой печи (ЭДП), предусматривающий следующие стадии: (a) приготовление шихты предварительно восстановленной железной руды (ПВЖ), характеризующейся металлизацией выше 90% и содержащей более 2,8 мас.% углерода, причем по меньшей мере 80% указанного углерода находятся в связанном с железом состоянии в виде цементита Fe3C, (b) завалка шихты предварительно восстановленной железной руды (ПВЖ) в электродуговую печь (ЭДП), (c) плавка шихты ПВЖ для получения жидкого чугуна, при этом указанный жидкий чугун характеризуется предопределенным фактическим содержанием углерода, причем по меньшей мере 80 мас.% указанного фактического содержания углерода в чугуне получают из углерода в шихте предварительно восстановленной железной руды (ПВЖ), и при этом стадию (c) осуществляют в восстановительной атмосфере и в плавильной камере электродуговой печи (ЭДП) при избыточном внутреннем давлении, создаваемом газами, продуцируемыми восстановительными реакциями, протекающими на стадии (с). Стр.: 1 A 2 0 1 8 1 4 1 7 4 9 A Адрес для переписки: 129090, Москва, пр-кт Мира, 6, ООО "Патентно-правовая фирма "ЮС" 2 0 1 8 1 4 1 7 4 9 EP 2017/ ...

METHOD FOR PRODUCING LIQUID MELTED IRON IN ELECTRIC FURNACE

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2003 127 390 (13) A C 21 B 13/14 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2003127390/02, 20.02.2002 (71) Çà âèòåëü(è): ÏÎËÜ ÂÓÐÒ Ñ.À. (LU) (30) Ïðèîðèòåò: 23.02.2001 LU 90735 (43) Äàòà ïóáëèêàöèè çà âêè: 27.03.2005 Áþë. ¹ 9 (86) Çà âêà PCT: EP 02/01749 (20.02.2002) Àäðåñ äë ïåðåïèñêè: 101000, Ìîñêâà, Ì.Çëàòîóñòèíñêèé ïåð., 10, êâ.15, "ÅÂÐÎÌÀÐÊÏÀÒ", È.À.Âåñåëèöêîé R U Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá ïîëó÷åíè æèäêîãî ðàñïëàâëåííîãî ÷óãóíà â ýëåêòðîäóãîâîé ïå÷è ñ íåñêîëüêèìè ýëåêòðîäàìè è ïîäîì ñ âàííîé ðàñïëàâëåííîãî ìåòàëëà, çåðêàëî êîòîðîé ïîêðûòî æèäêèì íåâñïåíåííûì øëàêîì, çàêëþ÷àþùèéñ â òîì, ÷òî à) âîññòàíàâëèâàþò ìåòàëëè÷åñêóþ ìåëî÷ü è ïîëó÷àþò èç íåå ïðåäâàðèòåëüíî âîññòàíîâëåííóþ ìåòàëëè÷åñêóþ ìåëî÷ü ñ èçáûòêîì ñâîáîäíîãî óãëåðîäà, á) ïåðåíîñ ò â ãîð ÷åì ñîñòî íèè â çàâåñå èíåðòíîãî ãàçà ïðåäâàðèòåëüíî âîññòàíîâëåííóþ ìåòàëëè÷åñêóþ ìåëî÷ü â âàííó íàõîä ùåãîñ â ýëåêòðîäóãîâîé ïå÷è ðàñïëàâëåííîãî ìåòàëëà, â) íàãíåòàåìûì â ïå÷ü ãàçîì ïåðåìåøèâàþò âàííó ðàñïëàâëåííîãî ìåòàëëà, ïðåï òñòâó îáðàçîâàíèþ êîðêè íà çåðêàëå âàííû, ã) ïëàâ ò ïðåäâàðèòåëüíî âîññòàíîâëåííóþ ìåòàëëè÷åñêóþ ìåëî÷ü â ýëåêòðîäóãîâîé ïå÷è ñ ïîëó÷åíèåì æèäêîãî ðàñïëàâëåííîãî ÷óãóíà. 2. Ñïîñîá ïî ï.1, â êîòîðîì ïðåäâàðèòåëüíî âîññòàíîâëåííóþ ìåòàëëè÷åñêóþ ìåëî÷ü ïåðåíîñ ò â âàííó ðàñïëàâëåííîãî ìåòàëëà ñàìîòåêîì ãðàâèòàöèîííûì ñïîñîáîì. 3. Ñïîñîá ïî ï.1 èëè 2, â êîòîðîì ïðåäâàðèòåëüíî âîññòàíîâëåííóþ ìåòàëëè÷åñêóþ ìåëî÷ü ïåðåíîñ ò â çîíó, ðàñïîëîæåííóþ ìåæäó ýëåêòðîäàìè ýëåêòðîäóãîâîé ïå÷è. 4. Ñïîñîá ïî ëþáîìó èç ïðåäûäóùèõ ïóíêòîâ, â êîòîðîì âàííó ñ ðàñïëàâîì ïåðåìåøèâàþò íåéòðàëüíûì ãàçîì, êîòîðûé íàãíåòàþò ÷åðåç ïîä ýëåêòðîäóãîâîé ïå÷è ñ ðàñõîäîì îò 50 äî 150 ë/ìèí, ïðåäïî÷òèòåëüíî îò 80 äî 120 ë/ìèí. 5. Ñïîñîá ïî ëþáîìó èç ïðåäûäóùèõ ïóíêòîâ, â êîòîðîì âàííó ñ ðàñïëàâîì ïåðåìåøèâàþò êèñëîðîäñîäåðæàùèì ãàçîì, êîòîðûé íàãíåòàþò â íåå ÷åðåç îäèí èëè íåñêîëüêî îòäåëüíûõ ...

A kind of preparation method of the high vanadium pig iron

本发明公开了一种高钒生铁的制备方法，属于冶金技术领域。制备方法包括：将钒钛磁铁矿金属化球团以及占钒钛磁铁矿金属化球团的3－10wt％的碳质还原剂混合置于熔炼炉中熔炼，将熔炼温度升至1500－1550℃、保温10－30min后立即放出低钒铁水，保留炉渣；以及将熔炼温度重新升至1550～1600℃，在3～5min中内分3～5次加入碳质还原剂与氧化钙粉形成的混合料，保温10～60min后，立即放出高钒生铁水，凝固后得到高钒生铁。本发明制备的高钒生铁钒含量高，其生产的高钒渣可以适用于直接生产钒铁合金。

METHOD FOR PRODUCING GRANULATED METAL IRON

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2016 146 945 A (51) МПК C21B 13/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016146945, 13.05.2015 (71) Заявитель(и): КАБУСИКИ КАЙСЯ КОБЕ СЕЙКО СЕ (КОБЕ СТИЛ, ЛТД.) (JP) Приоритет(ы): (30) Конвенционный приоритет: 15.05.2014 JP 2014-101724 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.12.2016 R U (43) Дата публикации заявки: 19.06.2018 Бюл. № 17 (72) Автор(ы): О Сёрин (JP), ИТО Сюдзо (JP) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2015/174450 (19.11.2015) R U (54) СПОСОБ ПРОИЗВОДСТВА ГРАНУЛИРОВАННОГО МЕТАЛЛИЧЕСКОГО ЖЕЛЕЗА (57) Формула изобретения 1. Способ для производства гранулированного металлического железа, содержащий этапы, на которых агломерируют смесь, включающую в себя содержащий оксид железа материал и углеродсодержащий восстанавливающий агент, загружают полученный в результате агломерат на под нагревательной печи и нагревают его, восстанавливая тем самым оксид железа в агломерате, и плавят восстановленное железо путем дополнительного нагревания для того, чтобы вызвать укрупнение восстановленного железа, производя тем самым гранулированное металлическое железо, при этом, когда агломерат нагревают на поде нагревательной печи, соотношение между массовой долей (мас.%) летучего вещества, содержащегося в углеродсодержащем восстанавливающем агенте, и средней скоростью потока (м/с) атмосферного газа в нагревательной печи удовлетворяет следующей формуле (1) Массовая доля летучего вещества -4,62 × средняя скорость потока газа + 46,7 … (1). 2. Способ по п. 1, в котором значение (количество кислорода/количество связанного углерода), получаемое путем деления количества (мас.%) кислорода, получаемого из содержащего оксид железа материала в агломерате, на количество (мас.%) связанного углерода, получаемого из углеродсодержащего восстанавливающего агента в агломерате, составляло от 1,46 до 2,67. 3. Способ по п. 1 или 2, в котором смесь ...

DEVICE FOR PRODUCING IRON OR STEEL FROM IRON OXIDE MATERIALS

1. Устройство для получения железа или стали из железоокисных материалов, содержащее плавильную печь и соединенный с ней реактор восстановления, подогреватель исходного материала, узлы ввода и выпуска материала и продуктов плавки, средства ввода кислородсодержащего газа и отвода газообразных продуктов реакции, отличающееся тем, что плавильная печь и реактор восстановления объединены футерованным кожухом и разделены стенкой кладки, в верхней части которой выполнен горизонтальный канал для отвода из печи газообразных продуктов реакции в сводовую часть реактора восстановления, в нижней части которого расположен газоотводной канал, соединенный газопроводом с камерой смешения, которая через газоходы связана с внутренней полостью подогревателя исходного материала, выполненного в виде герметичного кожуха с внутренней футеровкой и размещенными в нем вертикальными камерами, боковые стенки которых образуют с верхней крышкой подогревателя проем для прохода газа, при этом на выходе из газоходов в проеме подогревателя установлены газовые горелки, а в нижней части каждой камеры, с одной стороны расположен узел выгрузки материала, а с другой - канал отходящего газа, который газовой магистралью связан с камерой дожигания и газоотводом дымовых газов. ! 2. Устройство по п.1, отличающееся тем, что плавильная печь снабжена плазмотронами косвенного действия, два из которых расположены в крышке, параллельно продольной оси печи, а в нижней части печи плазмотроны расположены на противоположных стенках симметрично под углом к поду, при этом в боковых стенках печи в плоскости установки плазмотронов расположены форсунки дл� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2007 137 946 (13) A (51) МПК C21B 13/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2007137946/02, 12.10.2007 (30) Конвенционный приоритет: 12.02.2007 UA A200701437 (71) Заявитель(и): Неклеса Анатолий Тимофеевич (UA) R U (57) Формула изобретения 1. ...

Method for separating and purifying ferrophosphorus and calcium silicate composite waste

本发明公开了一种磷铁与硅酸钙复合废品的分拆及纯化处理方法，该分拆及纯化处理方法通过磷酸初浸、硝酸除杂和真空加热再净化处理，可回收50%‑80%质量比例的磷铁与硅酸钙复合废品，并收获白度不低于92的白炭黑、纯度不低于98%磷酸氢钙和主体成分为磷镍铁的纯化产物。本发明处理批量大、分拆彻底、产物纯化、工艺适用范围广。

Method of reduction and melting of metal

FIELD: metallurgy. SUBSTANCE: proposed method includes heating of charge consisting of metal-containing component and carbon-containing component in induction channel-type furnace for reduction of metal-containing component; part of gaseous products is used for preheating charge. Charge is fed to induction furnace through at least one chamber having one or several channels passing around chamber. Gaseous products flow via one or several channels to chamber for preheating charge; one chamber or several chambers and one or several channels are isolated from each other to avoid penetration of gaseous products. EFFECT: enhanced efficiency of utilization of heat of gaseous combustion products. 33 cl, 2 dwg оэОогсс ПЧ сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ '” 2 2140 601 ' 51) МПК’ С 24 В 13/12, Е 27 В 14/06 13) С2 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 99103682/02, 22.07.1997 (24) Дата начала действия патента: 22.07.1997 (30) Приоритет: 25.07.1996 ГА 96/6312 (46) Дата публикации: 20.08.2003 (71) Заявитель: ИПКОР Н.В. (М) (72) Изобретатель: ФУРИ Луи Йоханнес (7А) (73) Патентообладатель: ИПКОР Н.В. (М) < (56) Ссылки: ЕК 1205446, 02.02.1960. ЗЦ 1581748 (74) Патентный поверенный: С) АТ, 30.07.1990. ЕР 0115260 АЗ, 08.08.1984. Иванова Ольга Филипповна ЗЕ 393816 В, 23.05.1977. ЦЗ 3163520, 29.12.1964. == (85) Дата перевода заявки РСТ на национальную фазу: 25.02.1999 © (86) Заявка РСТ: < МЕ 97/00436 (22.07.1997) © (87) Публикация РСТ: = М/О 98/04749 (05.02.1998) < (98) Адрес для переписки: 103735, Москва, ул.Ильинка, 5/2, ООО с' "Союзпатент", пат.пов. О.Ф.Ивановой, рег. № 0331 — (54) СПОСОБ ВОССТАНОВЛЕНИЯ И ПЛАВЛЕНИЯ МЕТАЛЛА О’ (57) Способ восстановления и плавления металла включает нагрев шихты, состоящей из компонента, содержащего металл, и компонента, содержащего углерод, в индукционной печи канального типа для восстановления содержащего металл компонента, в котором по меньшей мере часть газообразных продуктов способа ...

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 by means of an electric arc furnace EAF, comprising the following steps: a. 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 said carbon is combined with the iron to form iron carbide Fe 3 C, b. charging the charge of pre-reduced iron ore DRI into the electric arc furnace EAF, c. 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 cast iron deriving from the carbon in the charge of pre-reduced iron ore DRI and wherein 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.

Improvements in metallurgical processes using hydrocarbons, and particularly in liquid metal production processes in an electric blast furnace

Process for producing liquid metal in an electric blast furnace, by preheating on a grid

Solid state iron prodn from powder or granule ore - by high intensity alternating current resistance heating

The extraction comprises the passing of highly conc. electric alternating current through the preheated raw material generating heat arising form the Joule-effect and electromagnetic forces resulting in the fast reduction and agglomeration into granules and rod shaped particles of the iron ore and the softening and separation of the gangue which coagulates into pumice stone. The process is used for the redn. of hematite, magnetite and natural iron stone. It is highly efficient and may be carried out in revolving shaft or endless belt type furnaces.

Method and apparatus for the production of iron and steel

Direct prodn. of iron - with cleaning, regeneration and recirculation of redn. gas contg. carbon monoxide and hydrogen

In a process for the direct prodn. of iron, the redn. gas travels round a circuit in which the gas leaving the redn. furnace is cleaned; compressed in a blower; heated to high temp. in a recuperative or regenerative system; reduced in an electrically-heated carburator; and then returned to the redn. furnace. The carburator pref. uses graphite or carbon electrodes for supplying the electrical energy, no electrode carrying >3000 kW, and the surplus gas in the circuit is pref. used to heat the recuperator or regenerator. Up to 25% of the fixed carbon required in the carburator is pref. obtd. from gaseous- or liq.- fuels or heavy oil. The process is very economic.

Method of producing hot metal

A method for preparing iron bearing green pellets (36) that can be processed in a rotary hearth furnace (15) without degradation and become self fluxing sponge iron pellets when charged to a submerged arc furnace (20) operating at a lower temperature than the rotary hearth furnace (15), to produce hot metal having a carbon content from 1 % to about 5 %.

Electric reducing furnace

The invention relates to an electric reducing furnace (1) for carrying out reduction processes, particularly for reducing slag in order to recover metallic constituents. The electric reducing furnace operates with electrical energy that is fed into the furnace interior (Oi) via at least one electrode. The reducing furnace (1), while having an air-sealed design, comprises a charging opening (3) for charge stock, which is conveyed via a charging device (4), whereby the charging opening also simultaneously serves as a waste gas exhaust opening (3) for the resulting gas.

Metal reduction and melting process

A metal reduction and melting process which involves the heating of a burden comprising a metal containing component and a carbon containing component in a channel type induction furnace in order to reduce such metal containing component, in which at least part of the gaseous products of the process is utilised for preheating-the burden; and apparatus for carrying out such preheating.

Process for the production of molten metal in an electric blast furnace with preheating on a grid

Refining process for impure particulate iron

Advanced processes and apparatus for the direct reduction of iron ores

Electric furnace direct steel fabrication process

Process for the reduction of iron ores by means of coal and steam and installation for its implementation

Electric furnace manufacturing process

Process for smelting iron ores

Process for processing cast iron suitable for foundry moulding

The process comprising supplying an electric arc furnace with ferrous products and fluxes so as to form a bath of metal and slag and adding carbon to the bath of metal. The ferrous products are pre-reduced ores which are continuously introduced into the furnace between the electrodes of the furnace in the course of the formation of the bath. A carburizing agent is introduced to bring the carbon content of the bath to a value between 1.7 and 6.7%. Thereafter, the slag is removed. If desired, the carbon content of the cast iron can be brought to the desired value by adding further carburizing agent. The cast iron is then poured from the furnace.

Method and device for obtaining metals or alloys

Process of manufacturing cast iron in an electric furnace

Patent FR2190922B1

Patent FR2281985B1

Improvements in processes for the reduction of iron oxides and other iron compounds

Advanced process for the preparation of metals and alloys

Extraction of iron - from lorraine ores

Fe contained in Lorraine ores in the form of hydrosilicates may be extracted by treatment of the ore with MgSO4 followed by reduction with C in a furnace. The resultant two products are an Fe-free slag and ferruginous slag. The latter is converted to iron or steel by reduction in an electric furnace with a C lining. The CO liberated is utilised to supply further current to maintain the thermal balance of the system.

Electric blast furnace

Production of metals from pulverulent materials by flash smelting in an electrically heated furnace

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 by means of an electric arc furnace EAF, comprising the following steps: a. 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 said carbon is combined with the iron to form iron carbide Fe3C, b. charging the charge of pre-reduced iron ore DRI into the electric arc furnace EAF, c. 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 cast iron deriving from the carbon in the charge of pre-reduced iron ore DRI and wherein 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.

Method for producing molten pig iron

A process for producing molten pig iron uses direct reduction of iron ore in a pre-reduction stage followed by a final reduction stage. In the pre-reduction stage iron ore is pre-reduced in a melting cyclone (1) by means of a reducing process gas originating from the final reduction stage. A post-combustion occurs in the reducing process gas in the melting cyclone so that said iron ore in said melting cyclone is at least partly melted. The partly melted iron ore passes downwardly into a metallurgical vessel (4) situated beneath the cyclone in which the final reduction takes place by supply of coal and oxygen, thereby forming a reducing process gas. A partial post-combustion occurs in the reducing process gas in the metallurgical vessel by means of said oxygen supplied thereto. The post-combustion ratio of the gas on exiting the metallurgical vessel is not more than 0.55. The coal is supplied directly into the slag layer (7) so that said partial post-combustion in said metallurgical vessel is at least partly effected in the slag layer.

Convertible metallurgical furnace and modular metallurgical plant comprising said furnace for conducting production processes for the production of metals in the molten state, in particular steel or cast iron

A metallurgical furnace including a vessel with a lower shell for containing a metal bath, the metal bath composed of molten metal and an overlying layer of slag. The lower shell is tiltingly supported and provided with a deslagging opening for evacuating the slag and a tapping opening for tapping the molten metal. The vessel includes an upper shell removably positioned on the lower shell and first and second inlet openings for feeding. The vessel includes a closing roof for the upper closing of the vessel removably positioned on the upper shell and a passage opening for the passage, through the same, of at least one electrode, at least one charge opening for feeding, through the same, charge material in the solid state. At least one of the inlet openings, passage opening, and charge opening is closed or associated with a closing element.

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 by means of an electric arc furnace EAF, comprising the following steps: a. 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 said carbon is combined with the iron to form iron carbide Fe3C, b. charging the charge of pre-reduced iron ore DRI into the electric arc furnace EAF, c. 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 cast iron deriving from the carbon in the charge of pre-reduced iron ore DRI and wherein 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.

Method for on-line adjusting slagging alkalinity of smelting reduction furnace by using construction waste

本发明属于钢铁冶炼废料处理、固废资源利用技术领域，尤其涉及一种利用建筑垃圾在线调节熔融还原炉造渣碱度的方法，所述利用建筑垃圾在线调节熔融还原炉造渣碱度的方法包括以下步骤：对建筑垃圾进行破碎筛分，将改性剂建筑垃圾改性剂、转炉熔融钢渣、焦炭加入到熔融还原炉中，通过石墨电极加热，对转炉熔融钢渣进行熔炼得到铁水和重构活性料。本发明提供一种原料成本低、产品附加值高，既可以大比例消纳建筑垃圾、显著提高建筑垃圾资源化率，又可以处置钢渣等难处理大宗工业固废，实现经济、环境及社会等多层效益的利用建筑垃圾在线调节熔融还原炉造渣碱度的方法。

A kind of clinker iron-smelting process extracted with rotary kiln after zinc oxide

本发明公开了一种用回转窑提取氧化锌后的炉渣炼铁工艺。将1000℃左右的炉渣，送入电弧炉，加入还原剂、造渣材料等炼成含铁达97％以上的铁水，可制得铸铁。也可将铁水送往就近炼钢厂炼钢。铁的回收率高达90％以上，节约热能，成本低，经济效益好。

Process of reducing metal oxides

Process for the production of metals in electric furnaces

A kind of preparation method of slurry pump impeller

本发明属于渣浆泵技术领域，具体涉及一种渣浆泵叶轮的制备方法，所述的制备方法包括：(1)配料、熔炼；(2)树脂造砂型；(3)浇注；(4)采用淬火加回火处理工艺；(5)待叶轮成型后，在其表面刷涂用于形成耐腐蚀层的浆料，烘干处理；(6)采用氢气和甲烷的混合气体对叶轮表面进行灼烧处理，灼烧时间为10～15s，得到所述的渣浆泵叶轮；本发明采用微米级氧化铝和纳米级氧化铝复合的方式刷涂于渣浆泵叶轮的表面，该大、小粒径级别的氧化铝确保了耐腐蚀层中粒子填充的致密性；通过氢气和甲烷混合气体的高温灼烧，改善了耐腐蚀层表面的填充粒子界面处的结合状态，确保了渣浆泵叶轮的耐腐蚀性能和耐冲击强度，延长了渣浆泵叶轮的使用寿命。

Method of manufacture of carbonaceous metal melt

Gasifier

A gasifier for producing synthesis gas from a widely varying feedstock of waste and natural fuels, the gasifer including an induction furnace, a molten bed and slag reaction chamber mounted on top of the induction furnace, an opening fluidly connecting the molten metal and slag with the interior of the induction furnace and the inside bottom of the reaction chamber, the reaction chamber further containing a froth and off-take reaction zones above the molten metal and slag, and a lid at the top of the reaction chamber for enclosing the reaction chamber and collecting the heat and fuel gas produced therein.

Process for melting cast iron borings

Process for melting cast iron borings comprising continuously charging dried borings into a coreless induction furnace operated within controlled metal levels to achieve adequate stirring of the molten metal in the furnace, drawing incoming borings beneath the meniscus of the molten metal surface, controlling the dissolved oxygen content of the molten metal to ensure formation of carbon oxide and thus achieve a "slag free" operation. The rate of feed of the borings is controlled according to the power input to maintain a predetermined constant temperature of the molten metal. Apparatus relating to the foregoing process is also disclosed.

KIT FOR MELT REDUCTION AND DEVICE FOR PERFORMING THIS KIT.

Process and plant for producing char and fuel gas

Electric reducing furnace

Electric arc reduction furnace (1) comprises a charging opening (3) for charging material which simultaneously acts as an exhaust gas line opening for the gas produced.

Red mud hydrogen reduced iron secondary heat molten salt iron, scandium, gallium, aluminum, titanium and silicon decomposition process

本发明公开了一种赤泥氢还原铁二次热熔盐铁、钪、镓、铝、钛、硅分解工艺，其技术方案为：S1：赤泥与氨气热解氧化铁氢还原反应；S2：反应后的产物磁选出的磁性还原铁进入电炉中冶炼熔融得到高纯铁；S3：磁选后的非磁性材料与氯化铵饱和溶液反应，将产物中的钙镁含量控制在0.1wt％以内，过滤得到固体氧化铝、氧化钛、二氧化硅；S4：反应后的液体氯酸盐先经树脂吸附、萃取提取其中的稀有元素，剩余的液体氯酸盐再进行浓缩结晶分离，得到固体氯化物；S5：过滤得到的固体与硫酸铵反应，得到硫酸铝氨、硫酸氧钛、固体二氧化硅和氨气。本发明的工艺大幅度降低了能耗，提高了产品的商业价值，缩短了工艺流程，使赤泥的处理具有更好的经济效益。

Ultra-short-flow cold-bonded pellet online metallization device and application method

本发明公开一种超短流程的冷固球团在线金属化的装置及使用方法，属于炼钢的技术领域。所述冷固球团在线金属化的装置包括电弧炉、计算机控制系统、烟气预热通道和金属料上料系统；所述电弧炉的一侧与所述烟气预热通道相连通，所述烟气预热通道包括低温还原段、高温还原段和升温加热段，所述高温还原段远离电弧炉的一端与所述金属料上料系统相连通；所述烟气预热通道上设置有氢氧烧嘴、烟气分析仪和非接触式测温装置；所述计算机控制系统通过设置的控制线路与氢氧烧嘴、烟气分析仪和非接触式测温装置电连接。本发明通过全程动态控制冷固球团温度和烟气CO和H 2 含量，大大提高了冷固球团金属化率、温度、反应效率、在线金属化控制水平。

Process improvements for the production of metals in electric furnaces

Apparatus for manufacturing molten iron and method for manufacturing thereof

본 발명은 철광석을 포함하는 원료를 용해시킬 수 있는 공간을 구비하는 반응로; 및 상기 반응로에서 발생한 배가스에서 수소를 분리하여 상기 반응로에 공급하도록, 상기 반응로와 연결되는 수소분리기;를 포함하고, 조업 중 이산화탄소 발생량을 감소시킬 수 있다. The present invention is a reactor having a space that can dissolve the raw material containing iron ore; And a hydrogen separator connected to the reactor to separate hydrogen from the flue gas generated in the reactor and to supply the reactor to the reactor.

Method for direct extraction of metals from oxide forms of metal-containing raw materials, various types of ores, man-made waste and a device for direct extraction of metals from various forms into metal or other oxide phases

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, namely to a method and device for processing metal-containing raw materials, in particular to the extraction of metals from metal-containing raw materials of ores and technogenic fine-dispersed waste. Direct extraction of metal from oxide forms of metal-containing raw materials of ores and man-made waste is carried out in the working melting space of the tank of a DC electric arc furnace. At the same time, continuous oscillations of electric and electromagnetic fields are created, passing through the entire volume of metal-containing raw materials by a nonequilibrium power temperature field with a DC arc with a rectified operating voltage from 20 to 130 V and a length from 0.5 to 10 mm, and a current from 1.0 to 100 kA is maintained with reduced blinking. The DC power supply for the device is made with a minimum reactance value in a set consisting of two interlocked converter transformers with an equalizing reactor, an input current-limiting reactor and two DC rectifiers. EFFECT: invention makes it possible to extract metals from metal-containing raw materials as fully as possible, with the highest speed and high degree of extraction, ensuring high efficiency of utilization of man-made waste. 8 cl, 10 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 757 772 C2 (51) МПК C21B 13/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 13/12 (2021.05) (21)(22) Заявка: 2020103533, 27.01.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Мулюков Адель Талгатович (RU), Валеева Айгуль Талгатовна (RU) Дата регистрации: 21.10.2021 (43) Дата публикации заявки: 27.07.2021 Бюл. № 21 (56) Список документов, цитированных в отчете о поиске: RU 2511419 C2, 10.04.2014. RU 2612330 C2, 07.03.2017. EP 1025267 B1, 28.11.2001. GB 1455221 A, 10.11.1976. (45) Опубликовано: 21.10.2021 Бюл. № 30 2 7 5 7 7 7 2 R U (54) Способ прямого извлечения ...