EP4548025A1 - Installation de cuisson et procédé de fabrication d'un matériau fritté au moins à partir d'une matière première contenant de l'aluminium, de préférence de la néphéline, qui se présente sous la forme d'une farine crue - Google Patents

Installation de cuisson et procédé de fabrication d'un matériau fritté au moins à partir d'une matière première contenant de l'aluminium, de préférence de la néphéline, qui se présente sous la forme d'une farine crue

Info

Publication number
EP4548025A1
EP4548025A1 EP23742193.8A EP23742193A EP4548025A1 EP 4548025 A1 EP4548025 A1 EP 4548025A1 EP 23742193 A EP23742193 A EP 23742193A EP 4548025 A1 EP4548025 A1 EP 4548025A1
Authority
EP
European Patent Office
Prior art keywords
raw meal
deacidified
mixture
cooler
raw
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
EP23742193.8A
Other languages
German (de)
English (en)
Inventor
Ali Memari Fard
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.)
Nima und Ramin Memari Fard Patentgesellschaft Br
Original Assignee
Nima und Ramin Memari Fard Patentgesellschaft Br
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 Nima und Ramin Memari Fard Patentgesellschaft Br filed Critical Nima und Ramin Memari Fard Patentgesellschaft Br
Publication of EP4548025A1 publication Critical patent/EP4548025A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
    • F27B7/2033—Arrangements of preheating devices for the charge consisting of a single string of cyclones with means for precalcining the raw material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/434—Preheating with addition of fuel, e.g. calcining
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/47—Cooling ; Waste heat management
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/38—Arrangements of cooling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/42—Arrangement of controlling, monitoring, alarm or like devices

Definitions

  • the invention relates to a firing system and a method for producing a sintered material from at least one aluminum-containing raw material, preferably nepheline, which is present as raw meal.
  • the aluminum-containing raw material in particular nepheline
  • the aluminum-containing raw material is ground with limestone, treated with soda as an additive, among other things, to reduce the sintering temperature, and combined to form a homogeneous dry mixture .
  • the homogeneous dry mixture is then burned in a kiln to form a sintered material, in order to then wash out the aluminum oxide from the sintered material produced with the addition of alkalis or other chemical compounds in a wet chemical process, with the aluminum oxide then being removed in a hydrometallurgical process is won.
  • a method for processing aluminum-containing raw materials is known, for example, from WO 2016/082827 A1.
  • Known firing systems and methods for producing a sintered material from a homogeneous dry mixture include a preheater, which consists of several cyclone stages for heating the homogeneous dry mixture, a calciner in which the preheated dry mixture is partially deacidified and which is equipped with a calciner burner Rotary kiln in which the partially deacidified dry mixture is burned to form the sintered material and which is equipped with a rotary kiln burner and a sinter cooler for cooling the fired sintered material.
  • an aluminum-containing raw material such as nepheline
  • a calcium-containing raw material such as limestone
  • This dry mixture is preheated, completely dried, calcined, fired into the sintered material and then cooled.
  • the energy supply for material conversion in such systems takes place by feeding fuel into a rotary kiln and a calciner. Air heated in a sinter cooler is fed partly to the rotary kiln as so-called secondary air and partly to the calciner as so-called tertiary air.
  • the exhaust gases from the rotary kiln are led through a rotary kiln inlet chamber to the calciner, flow through it and are discharged together with the exhaust gases generated in the calciner into the preheater consisting of several cyclone stages.
  • the preheater consists of several, usually 4, 5 or 6 cyclone stages, each of which functions as a suspended gas heat exchanger.
  • the homogeneous dry mixture is fed into the riser pipe of the first or uppermost cyclone stage, travels through the cyclone stages from top to bottom and is passed from the penultimate or second lowest cyclone stage into the calciner for partial deacidification.
  • the partially or completely deacidified dry mixture is then fed into the last or lowest cyclone stage of the rotary kiln inlet chamber of the rotary kiln.
  • the cyclone preheater heats the dry mixture to 850 to 880°C.
  • the calciner is arranged between the rotary kiln and the preheater.
  • the dry mixture can be partially deacidified to well over 90% in the calciner.
  • the combustion air is supplied as tertiary air from the sinter cooler to the calciner via a tertiary air line.
  • the dry mixture deacidified in the calciner is separated from the gas stream using the last or lowest cyclone stage and slides through the rotary kiln inlet chamber into the rotary kiln.
  • the cylindrical rotary kiln usually includes an inlet zone, a calcination zone, a transition zone, a sintering zone and an outlet zone.
  • the rotary tube is slightly inclined in the longitudinal direction, so that there is a slight gradient from the inlet zone to the outlet zone.
  • the partially deacidified dry flour is fed into the rotary kiln in the inlet zone and then continuously conveyed through the rotating rotary kiln due to the gradient.
  • the residual deacidification of the dry mixture that was previously partially deacidified in the calciner takes place.
  • the thermal conversion to the sintered material takes place in the sintering zone.
  • the exact process data depends on the specific characteristics of the raw meal or raw materials used, the fuels used and the different ones Environmental conditions.
  • the sintered material which is partially cooled in the end region of the rotary kiln, i.e. in the cooling zone of the rotary kiln, is fed to a sinter cooler at a temperature above 1000 ° C for final cooling, preferably a modern grate cooler due to the high recuperation.
  • the disadvantage of the previously described combustion system or the previously described method for producing a sintered material from the mentioned raw materials or raw meals or the homogeneous dry mixture is the risk of uncontrollable build-up in the areas of the calciner, riser pipe, cyclones of the last stage and inlet zone of the rotary kiln of the distillation system is very high. This formation of deposits can lead to disruptions in the operation of the distillation system. Therefore, such approaches are usually removed manually while the firing system is in operation, and the high temperatures present are not without danger for those people who remove the approach.
  • the following invention is based on the knowledge that the formation of deposits is primarily caused by the high temperature in the calciner or in the areas of the riser pipe, cyclones of the last stage and the inlet zone of the rotary kiln of the combustion system. This temperature is above the melting point of soda, which is around 850 °C.
  • the calciner gas temperature is over 1000 °C.
  • Another disadvantage is that due to the build-up, complete or high-level deacidification, also referred to as calcination or decarbonization, of the dry mixture mentioned in the calciner does not appear possible in order to achieve or ensure a stable and shock-free process with a high leachability of the sintered material .
  • the present invention is therefore based on the object of providing a firing system and a method for producing sintered material at least from an aluminum-containing raw material, preferably nepheline, from a calcium-containing raw material, preferably limestone, and from a sodium carbonate-containing raw material, preferably soda, the raw materials being raw flour available to improve.
  • an aluminum-containing raw material preferably nepheline
  • a calcium-containing raw material preferably limestone
  • a sodium carbonate-containing raw material preferably soda
  • the firing system according to the invention for producing sintered material at least from an aluminum-containing raw material, preferably nepheline, from a calcium-containing raw material, preferably limestone, and from a sodium carbonate-containing raw material, preferably soda, the raw materials being in the form of raw flour
  • a preheater which has several cyclone stages for heating a raw meal mixture which is composed of the aluminum-containing and the calcium-containing raw materials, but not of the sodium carbonate-containing raw material
  • a calciner which receives the preheated raw meal mixture from the penultimate cyclone stage of the preheater, the preheated raw meal mixture being deacidified in the calciner, preferably at temperatures of over 1000 ° C, the calciner having a calciner burner,
  • a rotary kiln to which the homogeneous mixture is fed and in which the homogeneous mixture is burned to form the sintered material, the rotary kiln having a rotary kiln burner,
  • the raw meal mixture in the calciner does not contain any raw material containing sodium carbonate, preferably no soda
  • a high grade to preferably Complete deacidification of the raw meal mixture in the calciner can be achieved without the above-mentioned buildup occurring in the calciner or in other areas, in particular in the riser pipe, in the cyclones of the last stage of the preheater or in the inlet zone of the rotary kiln or the combustion system.
  • the calciner can still be operated at temperatures of over 1000 °C, for example 1030 °C.
  • the risk of buildup no longer exists if the deacidified raw meal mixture, after separation in the last cyclone stage, is first cooled by a cooler to such an extent that the melting temperature of the raw material containing sodium carbonate, preferably soda, is not reached.
  • the sodium carbonate-containing raw material, preferably soda is then added in a predetermined amount to the cooled down and deacidified or calcined raw meal mixture.
  • This mixture is then homogenized in the mixer and fed as a homogeneous mixture to the rotary kiln for the sintering process.
  • Homogenously mixed means that the mixture has the most homogeneous distribution of the individual substances in order to obtain a high-quality sintered material with high leachability.
  • shock blowers are provided at the inlet zone of the rotary kiln, which can be used if, under certain circumstances, approaches should form at the inlet zone of the rotary kiln.
  • the shock blowers blow away the deposits and thus serve to clean the inlet zone of the rotary kiln.
  • the cooler is designed as a downpipe or in the manner of a downpipe with a double-walled jacket, the coolant, preferably air, flowing through the jacket, preferably counter to the direction of fall of the deacidified raw meal mixture, so that the deacidified raw meal mixture is in the interior of the downpipe can be cooled to the desired temperature.
  • the coolant preferably air
  • the coolant flowing through the jacket, preferably counter to the direction of fall of the deacidified raw meal mixture, so that the deacidified raw meal mixture is in the interior of the downpipe can be cooled to the desired temperature.
  • At least one sensor is provided for determining the temperature of the deacidified raw meal mixture when it enters the cooler and/or in particular when it leaves the cooler.
  • At least one sensor is provided for determining and/or adjusting the temperature of the coolant as it enters the jacket and/or exits the jacket.
  • the at least one temperature measurement using a sensor enables the setting and control of parameters, for example the temperature of the coolant and the flow rate of the coolant, in order to cool the deacidified raw meal mixture in the interior of the downpipe to a desired temperature when it leaves the cooler.
  • the flow path of the coolant within the jacket is predetermined by an arrangement of one or more guide elements within the jacket in order to cool the deacidified raw meal mixture in the interior of the downpipe to the desired temperature.
  • the mixer is designed as a downpipe or in the manner of a downpipe, which is preferably connected directly and preferably in one piece to the downpipe of the cooler. Designing the mixer as a downpipe reduces the risk of build-up. Because the mixer's downpipe is virtually open a common axis connects to the outlet of the cooler, a more compact design of the combustion system is also achieved.
  • baffles are provided within the downpipe of the mixer. These can be, for example, projections, in particular plate-like projections, which protrude from the inner wall of the downpipe in a predetermined arrangement.
  • the baffles prevent the free falling of the cooled, deacidified raw meal mixture emerging from the cooler and the supplied raw material containing sodium carbonate, so that the desired mixing of the aforementioned components is achieved.
  • the baffles change the flow paths and cause different flow speeds. Preferably, a turbulent flow is created, which is conducive to a homogeneous mixture.
  • the downpipe of the mixer has at least one inlet opening in the upper third of the area facing the cooler, through which the raw material containing sodium carbonate in particular can be fed.
  • an analysis unit which analyzes the deacidified raw meal mixture with regard to its chemical composition and/or grain size, preferably online and preferably continuously while the deacidified raw meal mixture passes through the analysis unit.
  • Such an analysis enables a quick adjustment of process parameters to optimize the process and the calculation of the required addition amount of the raw material containing sodium carbonate, preferably soda, for better combustibility of the raw meal mixture at a lower sintering temperature.
  • adjustments can be made to the composition of the deacidified raw mixture by adding additives or additives, which can also be referred to as additives.
  • the analysis unit is connected downstream of the cooler. It can be advantageous if the amount of raw material containing sodium carbonate added to the deacidified raw meal mixture can be determined depending on the analysis data supplied by the analysis unit.
  • additives are provided, preferably stored in raw meal silos, for example an aluminum-containing additive, preferably nepheline, or a calcium-containing additive, preferably limestone, preferably in each case as raw meal, which is added to the deacidified raw meal mixture to produce the homogeneous mixture, which has a predetermined Composition and grain size should have, can be added, the type and amount of the additive preferably being able to be determined depending on the analysis data supplied by the analysis unit.
  • an aluminum-containing additive preferably nepheline
  • a calcium-containing additive preferably limestone
  • the dedusting system for dedusting the cooler, the separated dust preferably being able to be fed directly to the deacidified raw meal mixture leaving the cooler in order to maintain the chemical properties of the deacidified raw meal mixture unchanged and almost constant over the entire process
  • the dedusting system preferably has a bag filter for separating the dust.
  • the raw meal mixture can be deacidified up to 100%, preferably from 95% to 100%, in the calciner.
  • the cooler is designed as a direct cooler and/or indirect cooler, with different coolants, for example water and/or air, being able to be used directly or indirectly.
  • the cooler is designed as a screw conveyor with a double-walled jacket, with the coolant, for example air or water or mixtures of different coolants, flowing through the jacket so that the deacidified raw meal mixture in the interior of the screw conveyor can be cooled to the desired temperature .
  • the invention also relates to a method for producing sintered material at least from an aluminum-containing raw material, preferably nepheline, from a calcium-containing raw material, preferably limestone, and from a sodium carbonate-containing raw material, preferably soda, the raw materials being present as raw meals, whereby
  • a raw meal mixture which is composed of the aluminum-containing and the calcium-containing raw materials, but not of the sodium carbonate-containing raw material, is heated in a preheater that has several cyclone stages,
  • the preheated raw meal mixture is transferred from the penultimate cyclone stage of the preheater into a calciner, whereby the preheated raw meal mixture is preferably deacidified at temperatures of over 1000 ° C,
  • the homogeneous mixture is fed into a rotary kiln in which the homogeneous mixture is burned to form the sintered material, the rotary kiln having a rotary kiln burner,
  • the deacidified raw meal mixture is analyzed with regard to its chemical composition and/or grain size, preferably online and preferably continuously while it passes through an analysis unit.
  • the deacidified raw meal mixture is analyzed after it leaves the cooler. It can be advantageous if the amount of raw material containing sodium carbonate added to the deacidified raw meal mixture is determined depending on the analysis data preferably supplied by the analysis unit.
  • one or more than one additional additive preferably stored in one or more raw meal silos, which can also be referred to as additive for short, for example an aluminum-containing additive, preferably nepheline, or a calcium-containing additive, preferably limestone, preferably in each case Raw meal, the deacidified raw meal mixture for producing the homogeneous mixture, which should have a predetermined composition and grain size, are added, the type and amount of the additive preferably being determined depending on the analysis data preferably supplied by the analysis unit.
  • additive preferably stored in one or more raw meal silos, which can also be referred to as additive for short, for example an aluminum-containing additive, preferably nepheline, or a calcium-containing additive, preferably limestone, preferably in each case Raw meal, the deacidified raw meal mixture for producing the homogeneous mixture, which should have a predetermined composition and grain size, are added, the type and amount of the additive preferably being determined depending on the analysis data preferably supplied by the analysis unit.
  • the cooler is dedusted using a dedusting system, the separated dust preferably being fed directly to the deacidified raw meal mixture leaving the cooler in order to ensure that the chemical properties of the deacidified raw meal mixture remain almost unchanged.
  • the raw meal mixture is deacidified up to 100% in the calciner.
  • 1a is a schematic view of a first part of a combustion system according to the invention
  • Fig. 1b is a schematic view of a second part of the combustion system according to the invention adjoining the first part shown in Fig. 1a
  • Fig. 2 is a schematic view of an alternative design and arrangement of a cooler and mixer.
  • the combustion system 10 shown in FIGS. 1a and 1b forms a unit.
  • Fig. 1b can be seen on the right side of Fig. 1a.
  • the firing system 10 is used to produce sintered material from nepheline, limestone and soda, which are used as raw flour.
  • the combustion system 10 includes a preheater which has several cyclone stages 12, 14 for heating a raw meal mixture which is composed of nepheline and limestone, but not of soda.
  • the raw meal mixture is fed via a raw meal feed, not shown here, to the first or top cyclone stage, not shown here, of the preheater 14.
  • the raw flour mixture is heated to 800 °C and more.
  • the preheated raw meal mixture from the penultimate cyclone stage, indicated here by the arrow 12, is fed into a calciner 16.
  • the raw meal mixture is further heated to temperatures of over 1000 ° C by the exhaust gases from a rotary kiln 28 and by one or more calciner burners 18 and is thereby almost completely deacidified or decarbonized.
  • the required combustion air is led as tertiary air via a tertiary air line 46 from the outlet of the rotary kiln 28 and thus from the sinter cooler 32 into the calciner 16.
  • the deacidified raw meal mixture is conveyed from the calciner 16 into the last cyclone stage 14, which is referred to herein as a cyclone separator, where the deacidified raw meal mixture is separated from the gas stream and then fed to a cooler 20.
  • the cooled down, deacidified raw meal mixture next leaves the cooler 20 and passes through an analysis unit 34. Before that, it can be in the dedusting system 44 separated dust of the cooled down, deacidified raw meal mixture is mixed back in after leaving the cooler 20. This has no influence on the subsequent analysis.
  • the cooled down, deacidified raw meal mixture is analyzed with regard to its chemical composition and/or grain size, preferably on-line and preferably continuously while the cooled down, deacidified raw meal mixture passes through the analysis unit 34.
  • the cooled down, deacidified raw meal mixture is now supplied with a predetermined amount of soda 24 as an additive, preferably in the form of a raw meal, from an additive silo or raw meal silo 26.
  • a predetermined amount of soda 24 as an additive, preferably in the form of a raw meal, from an additive silo or raw meal silo 26.
  • deviations in the desired composition can be compensated for by various correction means 48.
  • additives stored in raw meal silos 36, 38 can be provided, in particular nepheline 40 or limestone 42, which are then supplied in predetermined quantities as an additive to the cooled, deacidified raw meal mixture together with soda 24.
  • the cooled down, deacidified raw meal mixture is then mixed with the soda 24 and possibly further additives 40, 42 in a mixer 22 to form a homogeneous mixture.
  • Homogenously mixed means that the mixture has the most homogeneous distribution of the individual substances in order to obtain a high-quality sintered material.
  • the homogeneous mixture is then fed into the rotary kiln inlet chamber of the rotary kiln 28.
  • the homogeneous mixture is burned into the sintered material in the rotary kiln 28.
  • the required thermal energy is provided by a rotary kiln burner 30.
  • the fired sintered material leaving the rotary kiln is then cooled in the sinter cooler 32, which is connected to a sinter cooler filter, shown here with an arrow 50 as a path to the sinter cooler filter.
  • the rotary kiln head is designed in such a way that the gas velocity is kept below the floating velocity of the sinter dust particles, thereby minimizing the dust load in the tertiary air. This makes it advantageous Dust circulation is prevented, which could otherwise have a negative impact on the sintering process.
  • Fig. 2 shows a schematic view of an alternative design and arrangement of a cooler 52 and mixer 54 in contrast to Fig. 1a. Not shown is the raw meal silo 26 shown in Fig. 1a, which is of course present in order to remove soda 24 from it and to the mixer 54.
  • the analysis unit 34 shown in Fig. 1a and the correction means 48 shown in Fig. 1a can advantageously also be provided in the alternative design and arrangement of a cooler 52 and mixer 54 shown in Fig. 2, even if these 34, 48 are not explicitly shown .
  • a dedusting system 44 can also advantageously be provided in the alternative design and arrangement of a cooler 52 and mixer 54 shown in FIG. 2, even if this 44 is not explicitly shown.
  • the cooler 52 shown in FIG. 2 is advantageously designed as a downpipe that has a double-walled jacket at least partially over its length.
  • a coolant 60 preferably air, flows through this jacket in the opposite direction to the falling direction of the deacidified raw meal mixture 62, so that the deacidified raw meal mixture 62 is cooled down to the desired temperature in the interior of the downpipe.
  • the flow path of the coolant 60 is predetermined within the jacket by an arrangement of one or more guide elements within the jacket in order to cool the deacidified raw meal mixture 62 in the interior of the downpipe to the desired temperature.
  • the mixer 54 shown in FIG. 2 is advantageously designed as a downpipe which is connected directly and preferably in one piece to the downpipe of the cooler 52.
  • Baffles 56 are provided within the downpipe of the mixer 54. These 56 project as plate-like projections from the inner wall of the downpipe in a predetermined arrangement.
  • the baffles 56 prevent the cooled, deacidified raw meal mixture 62 emerging from the cooler 52 and the supplied soda 24 from falling freely, so that the desired mixing of the aforementioned components is achieved.
  • the baffles 56 change the flow paths and cause different flow velocities, which also creates a turbulent flow, which is conducive to a homogeneous mixture.
  • the downpipe of the mixer 54 has an inlet opening 58 in the upper third of the area facing the cooler 52.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Furnace Details (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne une installation de cuisson et un procédé de fabrication d'un matériau fritté au moins à partir d'une matière première contenant de l'aluminium, de préférence de la néphéline, qui se présente sous la forme d'une farine crue.
EP23742193.8A 2022-06-30 2023-06-30 Installation de cuisson et procédé de fabrication d'un matériau fritté au moins à partir d'une matière première contenant de l'aluminium, de préférence de la néphéline, qui se présente sous la forme d'une farine crue Pending EP4548025A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022116337.7A DE102022116337B4 (de) 2022-06-30 2022-06-30 Verfahren zur Herstellung eines gesinterten Materials zumindest aus einem alumiumhaltigen Rohstoff, vorzugsweise Nephelin, welcher als Rohmehl vorliegt
PCT/DE2023/100499 WO2024002433A1 (fr) 2022-06-30 2023-06-30 Installation de cuisson et procédé de fabrication d'un matériau fritté au moins à partir d'une matière première contenant de l'aluminium, de préférence de la néphéline, qui se présente sous la forme d'une farine crue

Publications (1)

Publication Number Publication Date
EP4548025A1 true EP4548025A1 (fr) 2025-05-07

Family

ID=87378161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23742193.8A Pending EP4548025A1 (fr) 2022-06-30 2023-06-30 Installation de cuisson et procédé de fabrication d'un matériau fritté au moins à partir d'une matière première contenant de l'aluminium, de préférence de la néphéline, qui se présente sous la forme d'une farine crue

Country Status (3)

Country Link
EP (1) EP4548025A1 (fr)
DE (1) DE102022116337B4 (fr)
WO (1) WO2024002433A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933289C2 (de) 1979-08-17 1985-10-03 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren zum Brennen von Klinker aus Zementrohstoffen
DE3582564D1 (de) * 1984-11-12 1991-05-23 Cle Verfahren und vorrichtung zur thermischen behandlung, verwendbar bei der herstellung eines hydraulischen bindemittels, enhaltend eine nachverbrennungsstufe.
WO2016082827A1 (fr) 2014-11-30 2016-06-02 Ramin Memari Fard Procédé de traitement de matières premières contenant de l'aluminium

Also Published As

Publication number Publication date
DE102022116337A1 (de) 2024-01-04
DE102022116337B4 (de) 2024-01-18
WO2024002433A1 (fr) 2024-01-04

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