[go: up one dir, main page]

WO2024199973A1 - Procédé pour faire fonctionner un réseau d'usine - Google Patents

Procédé pour faire fonctionner un réseau d'usine Download PDF

Info

Publication number
WO2024199973A1
WO2024199973A1 PCT/EP2024/056407 EP2024056407W WO2024199973A1 WO 2024199973 A1 WO2024199973 A1 WO 2024199973A1 EP 2024056407 W EP2024056407 W EP 2024056407W WO 2024199973 A1 WO2024199973 A1 WO 2024199973A1
Authority
WO
WIPO (PCT)
Prior art keywords
dra
metallization
degree
plant
direct reduction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/056407
Other languages
German (de)
English (en)
Inventor
Matthias Jonas Fabry
Daniel Schubert
Marius GROSSARTH
Matthias Weinberg
Caroline Biedermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel Europe AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp Steel Europe AG filed Critical ThyssenKrupp Steel Europe AG
Priority to CN202480022704.0A priority Critical patent/CN120917157A/zh
Publication of WO2024199973A1 publication Critical patent/WO2024199973A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C21B13/143—Injection of partially reduced ore into a molten bath
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2300/00—Process aspects
    • C21B2300/02—Particular sequence of the process steps
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2300/00—Process aspects
    • C21B2300/04—Modeling of the process, e.g. for control purposes; CII

Definitions

  • the invention relates to a method for operating a plant network, wherein the plant network has a direct reduction plant and an electric melting furnace arranged downstream of the direct reduction plant.
  • the plant network has a direct reduction plant and an electric melting furnace arranged downstream of the direct reduction plant.
  • the sponge iron is first produced in a direct reduction plant.
  • the production of sponge iron is based on the principle of reducing iron ore by exposing it to reducing gas, whereby the Fe compounds present in the iron ore, in particular Fe-O compounds, are broken down by reduction and metallic iron remains as a result of this metallization.
  • the sponge iron leaves the direct reduction plant with a degree of metallization MG DRA , where the degree of metallization is defined as the quotient of the mass of elemental iron present Fe elemental and the total mass of iron present Fe total .
  • the degree of metallization is understood to be the weight ratio of metallic iron to total iron in percent. This means that after the iron sponge has passed through the direct reduction plant, a proportion of MG DRA of the Fe atoms present are present in metallic form.
  • the iron sponge which contains a proportion of MG DRA of the Fe atoms in metallic form and a proportion of 1-MG DRA of the Fe atoms in bound form, is fed into the melting furnace.
  • the Fe atoms not yet metallized during direct reduction are then largely metallized in the subsequent melting process, which takes place with the addition of carbon carriers in particular, to a degree of metallization of MG product .
  • the degree of metallization MG product is 100 percent or is only slightly, at most 2 percent, below 100 percent. This means that the iron contained in the total of the metallic melt and the slag formed has been at least almost completely metallized.
  • the invention is achieved with a method with the features of claim 1.
  • a method for operating a plant network comprises at least one direct reduction plant, i.e. one direct reduction plant or more than one, for example two, direct reduction plants and an electric melting furnace arranged downstream of the direct reduction plant.
  • the method can be designed, for example, as a method for producing pig iron.
  • a key idea of the invention presented is therefore that the operation of the plant network is considered as a whole, with the plant network comprising both the melting furnace and the direct reduction plant.
  • its components, in particular the direct reduction plant and the melting furnace are coupled to one another, for example via a common control device, for example a control center.
  • the term “smelting furnace” arranged downstream of the direct reduction plant is to be understood as meaning that the smelting furnace follows the direct reduction plant directly in the process sequence, i.e.:
  • the product produced in the direct reduction plant is transported to the smelting furnace and/or stored temporarily, but no cleaning and/or other further processing of the product produced in the direct reduction plant takes place.
  • the direct reduction plant is a plant in which a solid reaction takes place in which oxygen is removed from the iron ore.
  • the reaction takes place at a Temperature below the melting point of the iron ore, so that the external shape remains largely unchanged.
  • the direct reduction plant can, for example, be designed as a shaft furnace with a reduction zone through which the iron ore passes against the direction of the reduction gas.
  • the direct reduction plant can also be designed, for example, as a rotary kiln, through which the iron ore is conveyed against the direction of flow of the reduction gas.
  • Direct reduction plants as such are well known from practice.
  • the electric melting furnace also referred to as an electroheating plant for melting metal or heating liquid metal, can, for example, be a melting furnace with direct arc action (electric arc furnace, acronym: EAF), with arcs being formed between the electrode and the metal.
  • EAF direct arc action
  • a melting furnace is used that is operated electrically. Any type of electrically operated melting furnace can be considered, with a preferred option being a melting furnace using arc resistance heating.
  • a melting furnace works on the principle of forming arcs between the electrode and the charge and heating the charge or the slag, in particular by means of the Joule effect.
  • Melting furnaces with arc resistance heating can, for example, be submerged electric arc furnaces (SAF), in which the electrode is immersed in the charge or slag, as alternating current arc reduction furnaces (SAFac) or as direct current furnaces.
  • Electric arc reduction furnaces can be designed.
  • Other designs are furnaces in which the electrode ends just above the slag.
  • the slag is not shielded by the charge, at least in the area of the electrode.
  • the slag is therefore open at the top and the brush-shaped arc that forms to form the slag can be seen from above.
  • This type of furnace is referred to as an open slag bath furnace (OBSF).
  • OBSF open slag bath furnace
  • the melting furnace is particularly preferably designed as a submerged electric arc furnace (SAF).
  • the melting furnace is particularly preferably designed as an open slag bath furnace (OBSF).
  • iron ore passes through the direct reduction plant in continuous operation of the plant network.
  • the iron ore is reduced to sponge iron by means of a reducing gas, in particular by means of molecular hydrogen and/or by means of natural gas.
  • the process control and the process parameters for example the time the iron ore stays in the direct reduction plant and the flow rate of reducing gas, cause the iron ore to be converted to sponge iron with a degree of metallization MG DRA .
  • the degree of metallization MG DRA is more than 80 percent, preferably more than 90 percent, particularly preferably more than 95 percent, at the location where the sponge iron leaves the direct reduction plant.
  • the sponge iron which has the degree of metallization MG DRA , is fed into the melting furnace.
  • the sponge iron is melted with the addition of carbon carriers, optionally with additional addition of other iron-containing materials such as scrap and/or additives for conditioning the slag that is formed, to a melt bath of metallic melt with a product metallization degree MG product and the slag floating on the metallic melt.
  • the properties of the slag are preferably influenced in a targeted manner using additives such as lime, sand, bauxite and/or similar.
  • a tap is taken in discrete succession, i.e.
  • a product property of products produced in the system network is determined continuously or quasi-continuously by means of a sensor.
  • Quasi-continuous determination of a product property means repeated determination of a product property at predetermined time intervals, in particular at predetermined short time intervals.
  • this can refer to a periodically repeated determination of a product property at short time intervals, whereby the time interval remains constant and, for example, between two immediately consecutive determinations of the product property, for example between one minute and 60 minutes, preferably between one minute and five minutes.
  • this can refer, for example, to an aperiodically repeated determination of a product property at short time intervals, wherein the time interval does not remain constant and, for example, between two immediately successive determinations of the product property can have a value of between one minute and 60 minutes, preferably between one minute and five minutes.
  • the invention furthermore carries out a change in the operation of the system network in order to set a predetermined degree of metallization MG DRA,target depending on the determined product property.
  • the operation of the system network is therefore changed in such a way that the degree of metallization which the sponge iron has after passing through the direct reduction plant corresponds to the degree of metallization MG DRA,target .
  • the invention is therefore based on the fundamental idea of dividing the total reduction work to be carried out in the plant network during the production of a metallic melt, in particular pig iron, i.e.
  • Changing the operation of the system network to adjust the specified degree of metallization is carried out on the basis of a value of a product property of products produced in the system network that is determined continuously or quasi-continuously by means of a sensor.
  • a product that is produced in the system network and which has a correlation with the degree of metallization MG DRA is examined using sensors, and then a correlation of the product is determined based on the sensor results obtained.
  • the degree of metallization MG DRA in particular via the correlation of the product property with the degree of metallization MG DRA , it is determined whether the operation of the plant network can be continued unchanged or whether a change in the operation of the plant network is necessary.
  • the correlation of the product with the degree of metallization MG DRA is preferably an injective function "degree of metallization MG DRA product property", particularly preferably a bijective function Product property”.
  • the correlation of the product property with the degree of metallization MG DRA can, for example, be an empirically found relationship. The person skilled in the art can easily determine this empirically found relationship using simple series of tests. For example, it can be provided that, starting from the determined product property, the degree of metallization MG DRA is determined continuously or quasi-continuously using an existing assignment of the product property to the degree of metallization MG DRA, which was previously determined empirically.
  • Quasi-continuous determination of the degree of metallization MG DRA means repeated determination of the degree of metallization MG DRA at predetermined time intervals, in particular at predetermined short time intervals. For example, this can refer to periodically repeated determination of the degree of metallization MG DRA at short time intervals, wherein the time interval remains constant and, for example, between two immediately successive determinations of the degree of metallization MG DRA can be between one minute and 60 minutes, preferably between one minute and five minutes.
  • this may refer, for example, to an aperiodically repeated determination of the degree of metallization MG DRA at short time intervals, whereby the time interval does not remain constant and, for example, between two immediately consecutive determinations of the degree of metallization MG DRA , for example, the value can be between one minute and 60 minutes, preferably between one minute and five minutes.
  • the degree of metallization MG DRA is deduced from the measured product property using empirically determined and therefore known data.
  • the degree of metallization can then be compared with the specified degree of metallization MG DRA,target , and if a deviation of the degree of metallization MG DRA from the specified degree of metallization MG DRA,target is determined, the operation of the system network can be changed to set the specified degree of metallization MG DRA,target .
  • the change in the operation of the system network to set the specified degree of metallization MG DRA,target is initiated when a deviation of the degree of metallization MG DRA from the specified degree of metallization MG DRA,target is determined, the amount of which is greater than a minimum deviation, which is accompanied by the advantage of greater process stability.
  • the above-described evaluation of the degree of metallization based on empirical data, the comparison with the specified degree of metallization, and - if necessary - the initiation of the change in the operation of the system network can be controlled, for example, by a control device of the system network, to which both the direct reduction plant and the melting furnace as well as the sensor are coupled.
  • a control device of the system network to which both the direct reduction plant and the melting furnace as well as the sensor are coupled.
  • an empirically determined assignment quantity of the product property to the degree of metallization MG DRA can be used, for example. can be used, on the basis of which the setting of the change in the operation of the system network takes place, preferably by means of control, particularly preferably by means of regulation.
  • the required change in the product property is inferred, ie: the extent of the required change in the product properties is determined, so that the change in the operation of the system network is derived from a known deviation in the degree of metallization to a change in the operation of the system network with the aim of a desired change in the product property.
  • the operation of the system network is changed on the basis of the determined product property and one or two further aspects, namely 1. an empirically found connection between this determined product property and the degree of metallization MG DRA, and 2.
  • the product property can be designed - as an H 2 volume flow in the blast furnace gas, in which case an H 2 sensor can be used as the sensor, for example; or - as a ratio of the H 2 /H 2 O volume flows in the blast furnace gas, in which case an H 2 sensor can be used as the sensor, for example, and an H 2 O sensor can be used as the further sensor; or - as a CO volume flow in the blast furnace gas, in which case a CO sensor can be used as the sensor, for example; or - as a ratio of the CO/CO 2 volume flows in the blast furnace gas, in which case a CO sensor can be used as the sensor, for example, and a CO 2 sensor can be used as the further sensor; or - as a directly measured degree of metallization of the sponge iron, or - as an oxygen mass balance of "oxygen in the gases fed in" to "oxygen in the top gas", or - as an outlet temperature of the sponge iron.
  • a property that is determined on a product produced in the melting furnace can be used as a product property.
  • the product property can be designed, for example, as the CO content in the melting furnace exhaust gas, in this case, for example, a CO sensor can be used as the sensor; or - as a ratio of the volume flows CO/CO 2 in the melting furnace exhaust gas, in this case, for example, a CO sensor can be used as the sensor and a CO 2 sensor as the other sensor; - as a temperature of the melt with a constant energy input, in this case a thermometer can be used as a sensor, for example; or - as an oxygen activity in the melt, or - as an oxygen activity in the slag, or - a total oxygen activity in the melt and the slag, or - as a slag property, in particular: emission coefficient or viscosity or CaO content or SiO 2 content or CaO and SiO 2 content, or - as an element proportion of the pig iron, or - as a specific amount
  • the examples of a product property mentioned have the common advantage that they are physical parameters that can be directly measured with a suitable sensor, so the sensor is designed, for example, as a sensor that senses the directly measurable physical parameter.
  • the sensor can be a CO sensor and the product property can be the CO content in the melting furnace exhaust gas or the ratio of the CO/CO 2 volume flows in the melting furnace exhaust gas.
  • the sensor due to the formation of carbon monoxide, i.e.
  • a preferably bijective dependence of the CO content in the melting furnace exhaust gas on the degree of metallization MG DRA can be empirically determined; once such an empirical determination has been made for the specific plant, the degree of metallization MG DRA can be determined on the basis of the empirically determined assignment of the product property to the degree of metallization MG DRA .
  • the specified degree of metallization MG DRA,target can be determined, for example, using an empirically determined first plant-specific characteristic curve characteristic DRA –MG DRA , i.e.: characteristic DRA depending on values MG DRA , of the direct reduction plant, and using an empirically determined second plant-specific characteristic curve characteristic melting furnace – MG product , i.e.: characteristic melting furnace depending on values MG product, of the melting furnace.
  • the plant-specific characteristic curve can be determined, for example, as characteristic values - a measure of the weight of metallized iron per unit of time, or - a measure of specific energy conversion, or - a measure of specific CO2 emissions, or - a measure of specific total costs.
  • the key values mentioned then apply respectively as the DRA key value for the direct reduction plant and as the smelting furnace key value for the smelting furnace.
  • the key values can therefore, for example, be the DRA key value, where the DRA key value is a measure of the specific CO2 emissions of the direct reduction plant that depends on the degree of metallization MG DRA , and the smelting furnace key value, where the smelting furnace key value can be a measure of the specific CO2 emissions of the smelting furnace that depends on the degree of metallization MG product .
  • the specified degree of metallization MG DRA,target is defined as the degree of metallization for which Min[parameter DRA (MG DRA ) + parameter melting furnace (1-MG DRA )] applies, where the formula symbol “Min” denotes the determination of the minimum.
  • Min parameter DRA
  • MG product 1-MG DRA
  • the proportion of iron that has not yet been metallized is typically well below 5 percent, mostly below 2 percent, usually in the order of 1 percent, with the majority of this non-metallized iron being part of the slag.
  • the described procedure for changing the operation of the plant network is based on a determination a deviation of a degree of metallization MG DRA determined indirectly, namely via the product property, from a target value MG DRA,target , where the target value is determined on the basis of two plant-specific characteristic curves, where each of the two characteristic curves is dependent on the degree of metallization of the iron, and the characteristic values can, for example, be one of the values mentioned above; the determination of the target value MG DRA,target is then carried out by determining the minimum of the sum of the two characteristic curves, as stated in the equation above.
  • characteristic curve does not necessarily imply that the characteristic curve must be present as a closed analytical function; each of the two characteristic curves can be a list of points, for example in two-dimensional space, where the finding of the minimum does not then necessarily have to be done analytically, but numerically, which is of course possible for the specialist without any problems. If, for example, the characteristic value is a measure of the specific CO 2 emissions, the described implementation by means of a corresponding characteristic value-driven selection of the MG DRA,target leads to the CO 2 emissions of the plant network being reduced by distributing the reduction work between the direct reduction plant and the melting furnace.
  • changing the operation to set the degree of metallization MG DRA as an increase can, for example, include: - Increasing the flow rate of reducing gas in the direct reduction plant and/or - Increasing the residence time of the iron ore becoming sponge iron or the iron ore carriers in the direct reduction plant, - Increasing the gas temperature of the reducing gas in a range between 560 and 1150 degrees Celsius, preferably between 900 and 1150 degrees Celsius.
  • the extent to which this change in operation to set the degree of metallization MG DRA to MG DRA,target, as an increase, is carried out can be determined by direct control or regulation.
  • the change in operation to set the degree of metallization MG DRA to MG DRA,target, as an increase can take into account a previously empirically determined dependency of the corresponding measure for changing the operation on the degree of metallization MG DRA or on the product property, which is indirectly a measure of the degree of metallization MG DRA . If, when evaluating the determined product properties, it emerges that the degree of metallization MG DRA must be reduced in order to achieve the target degree of metallization of the sponge iron MG DRA,target , i.e.
  • changing the operation of the plant network to adjust the degree of metallization MG DRA as a reduction can, for example, include: - reducing the flow rate of reducing gas in the direct reduction plant and/or - reducing the length of time the iron ore that is becoming sponge iron stays in the direct reduction plant.
  • the extent to which this change in operation to adjust the degree of metallization as a reduction MG DRA towards MG DRA,target can be determined by direct control or regulation.
  • a previously empirically determined dependency of the corresponding measure for changing the operation on the degree of metallization MG DRA or on the product property, which is indirectly a measure of the degree of metallization MG DRA can be included in the change in operation to set the degree of metallization MG DRA towards MG DRA ,target. Shifting the reduction work from the direct reduction plant to the melting furnace therefore leads, in mirror image, to a reduction in the reduction work in the direct reduction plant and an increase in the reduction work in the melting furnace, or vice versa.
  • the illustrated Fig. 1 and Fig. 2 show schematic diagrams showing an exemplary embodiment of a method according to the invention.
  • Figs. 1a) - c) show schematically the basic starting point of the procedure according to the invention.
  • Fig. 1a) and Fig. 1b) show empirically determined plant-specific characteristic curves.
  • the curve shown in Fig. 1a) represents the first plant-specific characteristic curve characteristic value DRA -MG DRA of the direct reduction plant and the curve shown in Fig. 1b) represents the second plant-specific characteristic curve characteristic value melting furnace -MG product of the melting furnace.
  • it can be an allocation of a specific CO 2 emission specified in kilograms/(ton of pig iron produced), i.e. a measure of the specific CO 2 emission of the respective plant depending on the degree of metallization.
  • the characteristic value is plant-specific and was obtained empirically, for example through appropriate test operation or through data obtained during regular operation.
  • the predetermined degree of metallization MG DRA,soll is determined from the two characteristic curves, for example on the basis of a determination, wherein the predetermined degree of metallization MG DRA,soll is determined as the degree of metallization for which the sum curve of the considered characteristic DRA (MG DRA ) and the considered characteristic smelting furnace (1-MG DRA ), shown in Fig. 1c), is minimal. As soon as a predetermined degree of metallization MG DRA,soll has been determined, this can be used to distribute the total reduction work carried out in the plant network for metallizing the iron contained in the iron ore when operating the plant network.
  • FIG. 2 An embodiment of a method according to the invention for operating a plant network 1, comprising a direct reduction plant 2 and an electric smelting furnace 3 arranged downstream of the direct reduction plant 2, can be seen in the schematic representation in Fig. 2.
  • iron ore or the iron ore carriers pass through the direct reduction plant 2 and are reduced there by means of reducing gas, in particular by means of molecular hydrogen and/or by means of natural gas, to iron sponge, which exits the lock 2' with a degree of metallization MG DRA and is then fed into the melting furnace 3.
  • the iron sponge is melted with the addition of carbon carriers, for example hard coal and/or coke, with further components optionally being added to the melt.
  • Such further components can be, for example, iron-containing materials such as scrap or additives for adjusting the composition of the slag that forms.
  • the metallic melt produced in the melt bath 3, which together with the slag that forms has a product degree of metallization of a total of for example, more than 98 percent, can be removed in discrete sequences by tapping the melt from the melting furnace 3. Continuously or quasi-continuously, that is: repeated at short intervals - for example, between 1 minute and 60 minutes - a product property expressed as the CO content in the melt bath exhaust gas is determined by means of a CO sensor 4.
  • a product property of a product produced in the melting furnace 3 of the plant network 1 more precisely: a byproduct, is considered. The detection of this product property, i.e.
  • the determined product property is used, starting from the determined product property, continuously or quasi-continuously, i.e.: repeatedly at short intervals - for example, from a time interval of between 1 minute and 60 minutes - to determine the degree of metallization MG DRA linked to the measured product property, at the current time or at a back-projected time, see reference number 6.
  • the degree of metallization MG DRA is determined on the basis of available empirical data, namely an empirically determined assignment of the product property to the degree of metallization MG DRA .
  • the change in operation of the system network 1 is initiated, for example by the control device 5, in order to set the degree of metallization MG DRA towards the predetermined degree of metallization MG DRA,target .
  • the operation of the system network 1 is therefore changed in order to set a predetermined degree of metallization MG DRA,target , depending on the product property determined.
  • the change in the operation of the system network 1 for increasing the degree of metallization MG DRA can, for example, consist in increasing the flow rate of reducing gas in the direct reduction system 2, which increases the Control device via the control of the flow valve 8.
  • the extension of the duration of the iron ore to be reduced to sponge iron remains in the direct reduction plant 2 can be taken, wherein for each of the two measures or for both measures in combination, the extent of the required effect of changing the operation on the product property, for example the quantitative degree of change in the CO content in the melting furnace 3 through the required increase in the flow rate of reducing gas in the direct reduction plant and/or the extension of the duration of the iron ore to be reduced to sponge iron remains in the direct reduction plant 2 is taken from previously stored quantitative data, which is an example of the empirically determined allocation quantity of the product property to the degree of metallization MG DRA already explained above.
  • the choice of the degree to which the operation changes the product property itself can be made by setting it on the basis of experience, i.e. empirically stored secondary control data, by controlling, or by regulating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un réseau d'usine (1) comprenant une usine de réduction directe (2) avec un sas (2') et un four de fusion électrique (3). Dans le procédé, une propriété de produit est déterminée au moyen d'un capteur (4), et sur cette base, le degré de métallisation du fer spongieux dans l'usine de réduction directe (2) est réglé. Pour mettre en œuvre le procédé, un dispositif de commande (5) peut être utilisé, par exemple pour commander une vanne de débit (8) par l'intermédiaire d'une quantité d'attribution (7) au moyen de l'élément de retour indiqué par un signe de référence (6), afin de modifier le degré de métallisation par l'intermédiaire du réglage du débit de gaz réducteur.
PCT/EP2024/056407 2023-03-28 2024-03-11 Procédé pour faire fonctionner un réseau d'usine Pending WO2024199973A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202480022704.0A CN120917157A (zh) 2023-03-28 2024-03-11 用于运行设备联合体的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23164818.9A EP4438745A1 (fr) 2023-03-28 2023-03-28 Procédé de fonctionnement d'un ensemble d'installations
EP23164818.9 2023-03-28

Publications (1)

Publication Number Publication Date
WO2024199973A1 true WO2024199973A1 (fr) 2024-10-03

Family

ID=85778787

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/056407 Pending WO2024199973A1 (fr) 2023-03-28 2024-03-11 Procédé pour faire fonctionner un réseau d'usine

Country Status (3)

Country Link
EP (1) EP4438745A1 (fr)
CN (1) CN120917157A (fr)
WO (1) WO2024199973A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1160338A1 (fr) * 2000-05-31 2001-12-05 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé pour préchauffer et réduire du fer directement réduit avant de le transférer à un four à arc
DE102020116425A1 (de) * 2020-06-22 2021-12-23 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung von Rohstahl mit niedrigem N-Gehalt

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1160338A1 (fr) * 2000-05-31 2001-12-05 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé pour préchauffer et réduire du fer directement réduit avant de le transférer à un four à arc
DE102020116425A1 (de) * 2020-06-22 2021-12-23 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung von Rohstahl mit niedrigem N-Gehalt

Also Published As

Publication number Publication date
CN120917157A (zh) 2025-11-07
EP4438745A1 (fr) 2024-10-02

Similar Documents

Publication Publication Date Title
DE2710970C2 (de) Verfahren zur Gewinnung von Roh- bzw. Blasenkupfer aus sulfidischem Kupferrohmaterial
DE3023121C2 (de) Verfahren zum Reduzieren von teilchenförmigen Metallerzen
EP4396383A1 (fr) Procédé de production d'un bain de fer
WO2024199973A1 (fr) Procédé pour faire fonctionner un réseau d'usine
EP4396382A1 (fr) Procédé de production d'une fonte de fer
EP4461827A1 (fr) Procédé de fonctionnement d'un ensemble d'installations
EP0176499B1 (fr) Procédé de récupération de métaux à partir de poussières contenant des oxydes métalliques et installation pour sa réalisation
EP0572848B1 (fr) Méthode pour la détermination du point final de l'affinage d'acier par l'oxygène dans un convertisseur
DE2840945C3 (de) Verfahren und Vorrichtung zum Vorwärmen von wenigstens 0,5 Prozent Kohlenstoff enthaltendem Eisenschwamm
DE397231C (de) Behandlung komplexer Erze zwecks Trennung von Kupfer, Blei, Zink und anderen Metallen von Antimon und Arsen
DE2104067B2 (de) Verfahren zur statischen steuerung des kohlenstoffgehaltes eines geschmolzenen stahls am ende des frischens in einem sauerstoffgeblasenen konverter
EP2487268B1 (fr) Four
DE201178C (fr)
DE247011C (fr)
WO2024200262A1 (fr) Installation de production d'acier dotée d'un ensemble four et d'un dispositif de réduction directe et procédé d'alimentation de charges d'alimentation dans le four d'un ensemble four
DE10306024B3 (de) Multivariate, prädiktive Regelung eines Herstellungsprozesses, insbesondere eines Direktreduktionsprozesses
EP4455312A1 (fr) Procédé de fonctionnement d'une installation sidérurgique de production de fer ou d'acier
DE178183C (fr)
DE748873C (de) Verfahren zur Gewinnung oder Veredlung von Metall im Drehrohrofen bei gleichzeitiger Herstellung von Zement oder hydraulischem Kalk
DE252195C (fr)
DE2361742A1 (de) Verfahren und anlage zur rueckgewinnung von metallhaltigem abfall bei der eisenverhuettung
AT235881B (de) Verfahren und Vorrichtung zur Vorerhitzung von einem mit hoher Temperatur arbeitenden metallurgischen Ofen aufzugebendem, stückigem bis körnigem Einsatzgut
DE1583895C (de) Verfahren zum Trennen bzw Getrennt halten verschiedener Gasstrome in Mehrzo neneinschachtofen fur das Chlorieren von stuckigem Gut
WO2024194064A1 (fr) Procédé de fonctionnement d'un ensemble système comprenant un four de fusion électrique et une installation de réduction directe
DE2657540A1 (de) Verfahren zur steuerung von abgasen in einem sauerstoffblaskonverter

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24709453

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202480022704.0

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

WWP Wipo information: published in national office

Ref document number: 202480022704.0

Country of ref document: CN