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WO2024012957A1 - Procédé d'obtention d'un métal réfractaire - Google Patents

Procédé d'obtention d'un métal réfractaire Download PDF

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Publication number
WO2024012957A1
WO2024012957A1 PCT/EP2023/068580 EP2023068580W WO2024012957A1 WO 2024012957 A1 WO2024012957 A1 WO 2024012957A1 EP 2023068580 W EP2023068580 W EP 2023068580W WO 2024012957 A1 WO2024012957 A1 WO 2024012957A1
Authority
WO
WIPO (PCT)
Prior art keywords
reaction vessel
material mixture
metal
bulk material
reaction
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.)
Ceased
Application number
PCT/EP2023/068580
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German (de)
English (en)
Inventor
Dominik Schmidt
Ivan SAENKO
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.)
Manvision GmbH and Co KG
Original Assignee
Manvision GmbH and Co KG
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 Manvision GmbH and Co KG filed Critical Manvision GmbH and Co KG
Priority to EP23741285.3A priority Critical patent/EP4555112A1/fr
Priority to KR1020257003702A priority patent/KR20250072948A/ko
Priority to AU2023307296A priority patent/AU2023307296A1/en
Priority to CN202380052918.8A priority patent/CN119546787A/zh
Priority to CA3261118A priority patent/CA3261118A1/fr
Priority to JP2025501751A priority patent/JP2025525537A/ja
Publication of WO2024012957A1 publication Critical patent/WO2024012957A1/fr
Priority to MX2024015931A priority patent/MX2024015931A/es
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/02—Obtaining nickel or cobalt by dry processes
    • C22B23/023—Obtaining nickel or cobalt by dry processes with formation of ferro-nickel or ferro-cobalt
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the subject of the invention is a process for obtaining a high-melting metal, in which the metal to be obtained is obtained from a primary material by a redox reaction that is exothermic in terms of its energy balance.
  • Typical alloys of this type are those using the elements Ti, V, Ni, Ta, Cr, Mo, Nb and W. In nature, these transition metals occur as oxides and hydroxides and other ceramic compounds. Sometimes these compounds have accompanying elements such as Pb, Fe, Ca, Si or Mg.
  • a process is known in which the metal to be obtained is melted and introduced into a reaction vessel together with a reactive metal.
  • Li, Ca or Mg can be used as reactants.
  • the reactant is used so that after it is ignited, a sufficiently high level of thermal energy is generated so that the metal to be obtained can be melted from the primary material.
  • the reactant is ignited in a suitable manner.
  • metal or a molten metal alloy and slag remain in the reaction vessel as reaction products.
  • the molten metal or the molten metal alloy forms a sponge-like structure in the reaction vessel, interspersed with slag particles.
  • the reaction vessel is then placed in a furnace in order not only to melt remaining raw material residues, but above all to melt the remaining slag.
  • lithium is preferred as a reactant, since lithium oxides melt at around 1,500 ° C, while magnesium oxides, for example, melt Require temperatures of around 3,000 °C. This melting destroys the sponge structure of the metal or metal alloy melted in the first extraction step and, due to the different density, the metal or metal alloy to be extracted segregates, so that the two reaction products can then be separated from each other.
  • this process has not yet found its way into industrial applications.
  • the multiple temperature treatment is viewed as disadvantageous.
  • the material mixture introduced into the reaction vessel is prepared by mixing the Ti primary material with the Al powder and with anhydrous ethanol and grinding it in a ball mill to a particle size of 0.5 to 3 pm.
  • This powder is then mixed with a reactant and a slag former and pressed into a tablet with a pressing force of 5 to 20 MPa.
  • This tablet which is placed in a reaction vessel, is coated on the top with an ignition agent before the reaction vessel is placed in a high-speed centrifuge.
  • the desired inertia force is reached (800 to 1200 G)
  • the ignition agent ignites and triggers the exothermic redox reaction.
  • the molten metal alloy is separated from the slag, which is lighter in density.
  • the method known from this document cannot be used for industrial use due to the extremely high inertia force required to separate the molten alloy from the slag.
  • the process time is limited by the grinding, the subsequent drying process step and the time required to maintain the melting temperature are quite long.
  • the grinding process is not without danger if AI has to be ground into the desired particle size.
  • the starting product of this previously known process is a mixture of Ni, Cr, Fe, Co and Mn oxides to which Ti, Si, B, C are added.
  • the exothermic reaction is carried out at an inertia force between 20 and 70 G, with an inertia force of 65 ⁇ 5 G being preferred to achieve the desired structure and properties.
  • the object of the invention is to propose a process that is simplified compared to the conventional industrial extraction route of high-melting metals or metal alloys and is particularly suitable for industrial melt-metallurgical extraction of metals, which also avoids the disadvantages of the prior art discussed above, or at least significantly reduces them.
  • metal used in this discussion includes transition metals as well as metal alloys. The following statements therefore apply equally to the direct extraction of metals, transition metals and metal alloys.
  • high-melting used in these statements, referring to a metal or a metal alloy, is to be understood as meaning those materials that have a melting temperature of at least 900 ° C.
  • the preliminary products for forming the bulk material mixture to be introduced into a reaction vessel are prepared independently of one another.
  • the material from which the metal is to be obtained is, if it does not naturally have the intended grain or particle size, crushed.
  • a target grain size of the primary material between 10 and 500 pm is planned. This material is preferably comminuted in such a way that it has a very narrow distribution spectrum in terms of its grain size distribution.
  • the grain size of the primary material can be one or even more than two powers larger than the specifications from CN 105132724 B. The comminution effort required is correspondingly lower. The same also applies to the provision of the reactant.
  • the typically intended target grain size of the reactant is in the range between 50 pm and 500 pm and can therefore be used safely with the usual safety precautions. to be edited.
  • the treatment steps necessary with regard to the desired target grain size of the primary material and the reactant are carried out independently of one another, so that each comminution step can be adapted to the material to be comminuted. This also applies to the machines used for shredding. Particularly for providing the reactant in the desired grain size, comminution that is independent of the primary material is advantageous, since the reactant sometimes has to be comminuted with greater care requirements.
  • the treatment steps intended for shredding are generally carried out dry, so that drying of one of these preliminary products is not necessary.
  • a material mixture is introduced as bulk material into a reaction vessel. Due to this property, the reaction vessel is filled to fill the cross-section of its cavity, regardless of its cross-sectional geometry and cross-sectional size. This means that the cavity provided by the reaction vessel can be filled in the best possible way with regard to its cross section and the cavity can be optimally used for introducing the material mixture.
  • the introduction of the bulk material mixture into the reaction vessel is followed by a step of compacting the bulk material mixture filled into the reaction vessel in order to reduce the pore volume.
  • the powdery material mixture filled into the reaction vessel will have a pore volume that is too large for the intended purposes.
  • Such compression occurs by introducing mechanical vibrations into the reaction vessel or acting on its contents. This process can be carried out on a vibrating plate, for example. For larger reaction vessels, other shaking agitators can also be used.
  • the claimed method is scalable, that is, it can also be easily used on an industrial scale.
  • the bulk material mixture filled into the reaction vessel is compacted in two stages to reduce its pore volume.
  • a first compaction step is carried out with a lower frequency and a lower shaking force compared to the second compaction step.
  • the first compaction step is carried out, for example, with a frequency of 40 to 65 Hz and a shaking force of 300 to 500 N/kg based on the total weight.
  • the second compaction step can be carried out with a frequency of 80 to 180 Hz and a shaking force of 450 to 800 N/kg in relation to the total weight.
  • sinusoidal oscillations are typically introduced into the bulk material mixture or the reaction vessel in which the bulk material mixture is contained.
  • the second compaction step will be designed to be longer in terms of its duration than the first compaction step, so that it is, for example, 1.5 to 2.5 times longer than the first compaction step.
  • a time period of 8 to 12, in particular about 10 minutes, and a time period of 17 to 25, in particular about 20 minutes, for the second compression step can be set as the time period for the first compression step.
  • Compaction of the material mixture introduced into the reaction vessel by applying higher pressing forces is not excluded in this process, but is not beneficial, especially since such a compaction cannot ensure that the material mixture forms a uniform pore volume over the filling height in the reaction vessel.
  • such compaction can be combined with a pressing process carried out with low force, for example by pressing on the surface with little force Preload acting stamp, which follows the decreasing filling height in the reaction vessel as a result of such a compression process or through which a uniaxial pressure is applied to the bulk material mixture during the compression process Power works.
  • This applied force acting uniaxially on the bulk material mixture in the reaction vessel is also dependent on the geometry of the reaction vessel, in particular its diameter. In order to achieve the same degree of compaction in a reaction vessel with a larger diameter as in a reaction vessel with a smaller diameter, a correspondingly higher force is required.
  • a force acting uniaxially on the bulk material mixture is preferably only applied during the second compression step.
  • the remaining porosity of the material mixture in the reaction vessel should not be less than 20%.
  • the burning rate can also be controlled via the porosity of the bulk material mixture.
  • a pore volume of more than 45% to 50% is not considered useful.
  • the pore volume within the bulk material mixture is used as a pathway so that after the exothermic reaction has been triggered to melt the metal to be obtained, the molten metal can flow to the bottom of the reaction vessel as a result of the inertial force acting on it.
  • the reaction vessel and its contents are exposed to an inertial force. This is typically done by placing the reaction vessel in a centrifuge. Significantly lower inertia forces are required for this process, which are far below the order of magnitude specified for obtaining a TiAl alloy in CN 105132724 B. These are usually well below 350 G. In many cases, an inertial force of 80 to 170 G is completely sufficient to be able to carry out the desired separation of substances within the reaction vessel.
  • the exothermic reaction process is triggered by local heat application to the bulk material mixture.
  • a heat-resistant ignition wire for example a tungsten wire, arranged on or adjacent to the material mixture in the reaction vessel can be used for this purpose.
  • the exothermic reaction in the bulk material mixture can also be triggered by a laser beam that strikes the surface of the material mixture in the reaction vessel.
  • the exothermic redox reaction of the bulk material mixture will be triggered on the side facing against the inertial force.
  • the heat front formed by the triggering process then passes in the direction of the inertial force.
  • the exothermic reaction is triggered at several points in the bulk material mixture, in which case the triggering can be carried out simultaneously or with a time delay. How the exothermic reaction of the bulk material mixture is triggered and whether, if triggering is intended at several points, this reaction is triggered at one or more points at the same time or at a different time depends on the desired course of this redox reaction. This depends on the grain size of the reactant, the pore volume, the cavity geometry of the reaction vessel and its size.
  • the porosity of the molten metal can also be influenced by the course of the redox reaction and the migration of the heat front through the material mixture in the reaction vessel.
  • the exothermic reaction of the bulk material mixture is triggered while the applied inertial force acts on it.
  • the bulk material mixture is heated by the exothermic reaction to such an extent that both the metal to be obtained and at least partially the slag are melted.
  • the metal to be extracted is then separated from the slag in the liquid state, at least to the extent that the slag has melted.
  • the separation of the two components from each other - metal to be extracted and slag - is then particularly good, with the result that the metal obtained is usually completely free of inclusions. This is done in a clever way Measure the higher density contrast between these two components, when in the liquid state, is exploited.
  • the density of a substance in the liquid phase is generally lower than in the solid phase.
  • the density contrast between the molten metal and the slag when the latter is also at least partially, preferably largely or even completely in the liquid state, is greater than when it is not melted and is in the solid state.
  • the separation process can be carried out with a lower inertial force acting on the reaction vessel in order to achieve the desired result.
  • This is a further step, initially independent of the step of compacting the bulk material mixture filled into the reactant vessel, to carry out this process in a scalable manner.
  • both the first proposed solution and the second proposed solution will be combined with each other to carry out the method.
  • the quality of the molten metal can therefore also be influenced by the degree of liquefaction of the slag. Even if melting the slag is particularly advantageous overall, almost equally good results can be achieved if only 70% to 80% of the slag is melted. In this context, it should be noted that even small amounts of liquefied slag have a positive effect on the quality of the separation process. According to one exemplary embodiment, the melting reaction is carried out in such a way that 25% to 30% of the slag is melted by the heat input.
  • the inertial force acting on it during the course of the exothermic reaction results in a particularly good separation of the molten metal from the slag, even if the slag is not melted, but better if both phases are in their liquid state, whereby a layering is formed in the reaction vessel , in which the metal obtained is in the section adjacent to the bottom of the reaction vessel and the slag lies above it.
  • the molten metal is collected in a collecting volume.
  • it can be the section adjoining the bottom of the reaction vessel.
  • the collecting volume can be provided by a collecting vessel connected to the reaction vessel.
  • the collecting volume can also be used as a master mold in which the molten metal solidifies.
  • a semi-finished product or a cast body in particular with complex geometry, can be produced from the primary material in a single melting step.
  • Such a semi-finished product or such a cast body can have different shapes. Even undercuts can be made in this way if the section of the collecting volume in which the extracted metal is located can be opened to remove the hardened metal. It is also possible to use collecting volumes that are destroyed to remove the hardened metal (the semi-finished product or the cast body). In such a case, it may be a clay mold that is then replaced with a new one for the next melting process.
  • reaction vessel in order to ensure that it is completely filled with the molten metal, its cross-sectional area will be designed to be smaller than that of the section located above it towards the opening of the reaction vessel.
  • the slag is then located in the area of the reaction vessel adjacent to the casting mold.
  • the reaction vessel can be filled in such a way that the collecting volume is not filled with the bulk material mixture, but only the one above it in the direction of the filling opening Section.
  • a sieve made of a heat-resistant wire can be used to release the original mold when filling the reaction vessel.
  • a metal foil is also provided to separate the antechamber of the reaction vessel, into which the bulk material mixture is filled, from the adjoining original mold.
  • This preferably consists of a metal which is also contained in the metal to be extracted. If, for example, a Ni alloy is obtained using this process, it is advisable to use a Ni foil.
  • the alloy to be obtained contains, for example AI, an Al foil can be used to separate the anteroom from the original mold. These foils are also melted when the metal is melted and are then part of the alloy.
  • the advantage here is that no slag is generated in the original mold during the process, which would have to be separated from it due to the applied inertial force. This shortens the duration of the procedure.
  • Such semi-finished products can be, for example, rods or hollow rods.
  • reaction vessel Connected to or part of such a reaction vessel could also be several original forms as collecting volumes into which the molten metal flows due to the inertial force acting on it. Particularly when smaller semi-finished products or workpieces are required, several of these can be provided in a single melting process.
  • the reaction agent contains one or more alloying elements which are either elemental or in bound form and with which the metal to be obtained from the primary material forms a compound. This is particularly advantageous for high-melting metals. In this way, Ti, Ni, Cr and other high-melting alloys can be produced with virtually any alloying elements in a single melting process, fueled by the prescribed exothermic reaction.
  • the bulk material mixture introduced into the reaction vessel can be present in graded form in the reaction vessel. Such grading typically occurs in the direction of the inertial force acting on the metal when it melts. This can be a different one, for example Mixing ratio of individual components contained in the bulk material mixture as well as certain primary materials or additives are not arranged homogeneously across the height of the reaction vessel in the bulk material mixture. Since this process extracts metal via a direct route, a graded material can also be easily produced using this process.
  • the exothermic reaction process is carried out in a relatively short time. Depending on the aforementioned circumstances, such a process can take place in just a few tens of seconds. Even with larger volumes of the bulk material mixture, a reaction time of only a few minutes is required. The melting of the metal(s) and their crystallization (hardening) must be included in this calculation.
  • the reaction vessel is typically inert with respect to the elements or compounds contained in the bulk material mixture. Typically it is not desired to remove elements from the reaction vessel are dissolved out in the course of the exothermic reaction process and introduced into the melt.
  • the inertia force provided in this process which is relatively low compared to previously known processes, makes this process scalable, in particular to the extent that the amount of metal to be obtained with each batch can be sufficiently large for economical use of this process.
  • samples weighing several tens of kg or even several hundred kg can be produced in a reaction vessel.
  • Reaction vessels which can be used to produce semi-finished products or cast bodies with a higher weight, can also be used.
  • the metal extraction process can be influenced by two key control variables, namely the temperature triggered by the exothermic reaction and the inertial force.
  • the temperature of the molten metal can influence its viscosity. Basically, if the viscosity of the molten metal is lower, only a lower inertial force is required for the separation process.
  • the temperature and inertial force for the metal melting and separation process are determined depending on the metal to be obtained and also on the design of the part of the reaction vessel into which the molten metal is to flow.
  • the exothermic process used for melting the metals or metal alloys can be influenced by physical parameters, such as the particle size of the shredded primary material, the inertial force acting on the bulk material mixture, the degree of compaction or the pore volume set up as well as the Design of the reaction vessel. The smaller the particle size, the shorter the time it takes to extract the metal to be melted from it.
  • the force of inertia can be used to The speed of migration of the heat front can be influenced by the bulk material mixture within the reaction vessel, as can the reaction temperature. With higher inertial forces, the heat front travels more quickly through the bulk material mixture. Higher inertial forces, if these are provided by centrifuges, as is usually the case, influence the reaction temperature, since the resulting cooling effect is greater at higher speeds.
  • the degree of compaction can influence the intensity and duration of the exothermic reaction on the individual particles as well as the transport speed at which the molten metal flows into the collecting volume.
  • the size and design of the collecting volume provided for collecting the liquid melt influences the cooling rate or the cooling curve of the molten metal collected therein. It can certainly be provided that the collecting volume and the bulk material mixture introduced therein are preheated, for example to a temperature between 500 ° C and 600 ° C, before the exothermic reaction is started.
  • the molten metal components first collected therein then cool down more slowly on the preheated inner wall of the vessel used as a collecting volume, with the result that the crystal structure of the collected metal is more uniform overall.
  • the metal extraction process can also be influenced by the composition of the reactant or by additives and thus in a chemical way.
  • this can contain oxides that increase or decrease the reaction temperature.
  • Other reactant components can be used to delay the exothermic reaction.
  • additives can be used that can increase or decrease the melting temperature of the slag.
  • Substances used for such purposes usually oxides, are typically inert in relation to the metal to be extracted.
  • the slag melting temperature can be lowered with CaO and increased with MgO. CaO is used when a metal with a relatively low melting temperature can be obtained. Is the melting point of the slag lower than the melting temperature of the metal to be extracted, MgO can be used to increase the slag melting temperature.
  • the particle size of the primary material and the reactant also flows into energy control with regard to the course of the melting reaction in the reaction vessel.
  • the smaller the grain size the faster the reaction occurs per particle.
  • the reaction of particularly exothermic mixtures of substances can be delayed by providing a larger particle size.
  • a larger particle size has a positive effect on the upstream comminution process, as this can be carried out in a correspondingly shortened manner. This means that the particle size is also cleverly used for energy control.
  • the invention is explained below using an exemplary embodiment with reference to the flow chart in FIG.
  • the application of the method according to the invention for the direct production of an Alloy 600 alloy (EN 2.4816) is described below.
  • the process according to the invention produces a NiCrFe alloy with the following composition: Cr 15% by weight, Fe 8% by weight, the balance Ni together with unavoidable impurities, which total less than 1%.
  • This is an alloy also known as Alloy 600 (EN 2.4816).
  • NiOC ⁇ Ch and Fe20s are mainly used as starting materials. In this exemplary embodiment, these are comminuted together to a grain size of approximately 85 pm (step 1). AI is used as the reactant in this exemplary embodiment. Likewise, Mg, Si or mixtures can also be used as a reactant, typically together with a conventional flux. The relevant preliminary product is comminuted to a grain size of 70 pm (also step 1). In a subsequent step - process step 2 - the precursor and the reactant are mixed together. An industrial mixing machine is used for this. The mixing process is carried out so that as little energy as possible is introduced into the mix through mixing. Both the crushing process and the mixing process are carried out dry.
  • the bulk material mixture removed from the mixer is then poured into a reaction vessel 1 (step 3).
  • the reaction vessel 1 shown in the figure is to be understood only as an exemplary embodiment of a reaction vessel.
  • the reaction vessel 1 includes a lower section 2, which is designed as an original form. At the end of the extraction process, this part of a section contains the hardened alloy as a cast block.
  • the lower section 2 merges into an upper section 4 in the direction of the filling opening 3 of the reaction vessel 1. In terms of its diameter, this is larger than the diameter of the section 2 used as the original mold.
  • the bulk material mixture contained therein is compacted on a vibrating plate (step 4). This measure reduces the pore volume of the bulk material mixture in the reaction vessel 1 to approximately 20%.
  • the compression step was carried out in two stages.
  • the reaction vessel 1 filled with the bulk material mixture 5 was compacted with a sinusoidal oscillation of 50 Hz with a shaking force of approximately 375 N/kg for 10 minutes.
  • the compression in the second compression stage took place at a higher frequency and with a higher shaking force (125 Hz; 575 N/kg).
  • an axial force was exerted on the bulk material mixture 5 located in the reaction vessel 1, with a low pressure of approximately 18 N/kg.
  • the second stage of the compaction step was carried out for a period of 20 minutes.
  • the reaction vessel 1 is connected to a reaction vessel holder of a centrifuge (step 5).
  • the centrifuge is operated so that an inertial force of approximately 85 G acts on the reaction vessel 1 with respect to its contents, as indicated by the block arrow.
  • the exothermic redox reaction intended to melt the metal is triggered (step 6). In the exemplary embodiment shown, this is done by a laser beam introduced from the direction of the axis of rotation of the centrifuge into the reaction vessel, which is open in the opposite direction to the direction of action of the inertial force. As a result of the resulting temperatures, the metals are melted from the primary material.
  • the burning that begins on the surface of the bulk material mixture 5 on the filling opening side continues in the direction of the acting inertial force, as indicated in this process step of the figure. Due to the inertial force, the molten metal will flow into the lower section 2 of the reaction vessel 1, following the moving heat front. Due to the lower density of the slag produced in this process, this results in an effective separation between the metal alloy to be obtained and the slag produced in this process.
  • the centrifuge is stopped, the reaction vessel 1 is removed and cooled.
  • the reaction products layered in the reaction vessel 1 - cast body 6 and slag 7 - can then be removed and separated from one another.
  • the casting body 6 is a high-purity Alloy 600 casting body, which in the exemplary embodiment shown has a cylindrical shape (step 8).

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

Abstract

L'invention divulgue un procédé d'obtention d'un métal réfractaire, qui est obtenu au moyen des étapes suivantes consistant à : - fournir un matériau de départ broyé du métal ou avec le métal à obtenir sous forme liée par oxydation, - fournir un réactif, qui réagit de manière exothermique après l'allumage, en tant que produits en vrac, lequel réactif est constitué de ou contient un agent de formation de laitier ayant une affinité pour O2 supérieure à celle du métal à obtenir, - fournir un mélange de produits en vrac-matériau (5) du matériau de départ et du réactif, - remplir un récipient de réaction résistant à la chaleur (1) avec un lot du mélange de produits en vrac-matériau (5) tout en laissant un volume de pore, - appliquer une force d'inertie qui agit sur le récipient de réaction (1) et son contenu, - déclencher une réaction exothermique du mélange de produits en vrac-matériau (5) pendant que la force d'inertie agit sur celui-ci par l'apport local d'énergie thermique au mélange de produits en vrac-matériau (5), à partir du bord du mélange de produits en vrac-matériau (5), faisant ainsi fondre le métal à obtenir et séparant le métal fondu du laitier (7) suite à la force d'inertie agissant pendant que la réaction d'oxydoréduction est en cours, - arrêter la force d'inertie agissant sur le récipient de réaction (1) et son contenu à la fin de la réaction d'oxydoréduction et - après le refroidissement du contenu du récipient de réaction, éliminer les produits de réaction (6, 7) du récipient de réaction (1) et séparer le métal obtenu du laitier (7).
PCT/EP2023/068580 2022-07-13 2023-07-05 Procédé d'obtention d'un métal réfractaire Ceased WO2024012957A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP23741285.3A EP4555112A1 (fr) 2022-07-13 2023-07-05 Procédé d'obtention d'un métal réfractaire
KR1020257003702A KR20250072948A (ko) 2022-07-13 2023-07-05 내화 금속의 수득 방법
AU2023307296A AU2023307296A1 (en) 2022-07-13 2023-07-05 Method for obtaining a refractory metal
CN202380052918.8A CN119546787A (zh) 2022-07-13 2023-07-05 提取高熔点金属的方法
CA3261118A CA3261118A1 (fr) 2022-07-13 2023-07-05 Procédé d'obtention d'un métal réfractaire
JP2025501751A JP2025525537A (ja) 2022-07-13 2023-07-05 高融点金属を取得する方法
MX2024015931A MX2024015931A (es) 2022-07-13 2024-12-18 Metodo para la obtencion de un metal refractario

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022117500.6A DE102022117500B3 (de) 2022-07-13 2022-07-13 Verfahren zur Gewinnung eines hochschmelzenden Metalls
DE102022117500.6 2022-07-13

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WO2024012957A1 true WO2024012957A1 (fr) 2024-01-18

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US7527669B2 (en) 2003-12-10 2009-05-05 Babcock & Wilcox Technical Services Y-12, Llc Displacement method and apparatus for reducing passivated metal powders and metal oxides
CN105132724A (zh) 2015-10-23 2015-12-09 攀枝花学院 一种超重力辅助铝热还原法自蔓延制备钛铝合金的方法
RU2750608C2 (ru) * 2016-09-14 2021-06-29 ЮНИВЕРСАЛ АКЕМЕТАЛ ТИТАНИУМ, ЭлЭлСи Способ производства сплава титан-алюминий-ванадий

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LU81469A1 (fr) 1979-07-05 1981-02-03 Luniversite Libre Bruxelles Procede et installation pour la production de metaux reactifs par reduction de leurs halogenures

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US7527669B2 (en) 2003-12-10 2009-05-05 Babcock & Wilcox Technical Services Y-12, Llc Displacement method and apparatus for reducing passivated metal powders and metal oxides
CN105132724A (zh) 2015-10-23 2015-12-09 攀枝花学院 一种超重力辅助铝热还原法自蔓延制备钛铝合金的方法
RU2750608C2 (ru) * 2016-09-14 2021-06-29 ЮНИВЕРСАЛ АКЕМЕТАЛ ТИТАНИУМ, ЭлЭлСи Способ производства сплава титан-алюминий-ванадий

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SANIN, V. N.: "Centrifugal metallothermic SHS of cast Co-Cr-Fe-Ni-Mn-(X) alloys", IN: RUSSIAN JOURNAL OF NON-FERROUS METALS, vol. 61, no. 4, 2020, pages 436 - 445, XP037236454, ISSN: 1067-8212, DOI: 10.3103/S1067821220040070

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