EP4094029A1 - Vorrichtung und verfahren zur herstellung von zementklinker - Google Patents
Vorrichtung und verfahren zur herstellung von zementklinkerInfo
- Publication number
- EP4094029A1 EP4094029A1 EP21700685.7A EP21700685A EP4094029A1 EP 4094029 A1 EP4094029 A1 EP 4094029A1 EP 21700685 A EP21700685 A EP 21700685A EP 4094029 A1 EP4094029 A1 EP 4094029A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluidized bed
- bed reactor
- preheater
- calciner
- cooler
- 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
Links
- 239000004568 cement Substances 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 35
- 239000002245 particle Substances 0.000 claims description 35
- 238000000227 grinding Methods 0.000 claims description 18
- 239000000446 fuel Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 13
- 235000012241 calcium silicate Nutrition 0.000 claims description 13
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims description 13
- 238000005054 agglomeration Methods 0.000 claims description 12
- 230000002776 aggregation Effects 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000000265 homogenisation Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 16
- 239000007789 gas Substances 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 239000007858 starting material Substances 0.000 description 10
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 9
- 230000008901 benefit Effects 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 8
- 239000001569 carbon dioxide Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000171 calcio olivine Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- BHYOQNUELFTYRT-DPAQBDIFSA-N cholesterol sulfate Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 BHYOQNUELFTYRT-DPAQBDIFSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
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
-
- 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
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/40—Dehydrating; Forming, e.g. granulating
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Definitions
- the invention relates to a method and a device for producing cement clinker.
- the device has a preheating zone, a deacidification zone and a sintering zone.
- DE 102017202824 A1 discloses a plant for the production of cement, in particular cement clinker, with a preheater which has a plurality of cyclones, a calciner for deacidification and a rotary kiln.
- the mineral raw material is first ground, then preheated in the preheater, deacidified in the calciner and finally heated in the furnace.
- the material coming out of the furnace is cooled down in the subsequent cooler.
- a common problem is that there is material build-up in the area of the preheater. These material deposits are created in particular by dust, very fine-grained material that is created when the mineral starting material is ground. In order to remove these material deposits, the affected system parts must be cleaned under sometimes dangerous working conditions. To do this, the furnace must be stopped.
- a method for drying granulated material is known from EP 3476812 A1.
- a method for reducing the content of exhaust gases when producing cement clinker is known from WO 2008/074048.
- the object of the invention is to provide a cement process and a device for this purpose, which enables novel product qualities.
- the device according to the invention for the production of cement clinker has a preheater, a calciner and a cooler as well as a feed for cement raw material.
- the device is particularly preferably used to carry out the method according to the invention.
- a mixer for example and preferably a mechanical fluidized bed reactor, is arranged between the feed for cement raw material and the preheater.
- the calciner is connected directly to the cooler.
- the calciner is connected to the cooler via a furnace, in particular a rotary kiln.
- the mixer and the preheater are connected to one another via a continuous flow of material. This means that there is in particular no storage between these steps. Storage could have a negative effect on the particle size and thus change the product quality.
- the mechanical fluidized bed reactor By using the mechanical fluidized bed reactor, it has been found that extremely uniform agglomeration of the starting material is achieved. This leads to the fact that, in addition to the excellent, non-sticking passage through the preheater and the calciner, there is also extremely good and above all uniform heating and thus conversion of the starting material.
- the calciner is connected directly to the cooler without an intermediate furnace. It has been shown that the starting material has already been converted into cement clinker after it has passed through the calciner.
- the device is preferred for producing clinker based on dicalcium silicate, in particular clinker based on ⁇ -Ca2 [SiO4], also called belite.
- the preheater can be designed as a direct current preheater.
- gas and solid are transported in the same direction, while the heat is transferred from the gas to the solid.
- An example of this are cyclones connected in series. The heat transfer takes place in the connections between the cyclones in cocurrent, the cyclones then serve to separate gas and solids.
- the preheater can be designed as a countercurrent preheater.
- a corresponding preheater is known for example and in particular from DE 383 42 15 A1.
- a furnace in particular a rotary kiln, can be arranged between the calciner and the cooler.
- this embodiment does not lead to belite as a product and is therefore only preferred for other products.
- the mechanical fluidized bed reactor has an essentially horizontally arranged container.
- a shaft is arranged centrally along the longitudinal axis of the container, with mixing tools being arranged radially on the shaft.
- these mixing tools can be arranged in the form of a rod and vertically on the shaft.
- the mixing tools are particularly preferably designed in the shape of a ploughshare. Examples of ploughshare-shaped mixing tools can be found in DE 27 29 477 C2 or DE 197 06 364 C2, for example.
- the mechanical fluidized bed reactor has at least one fluid supply. Further fluid feeds can also be used, in particular along the transport direction of the material, be arranged.
- the fluid supply is particularly preferably used to supply water. Water supports the agglomeration and thus leads to more uniform particles. The reduction in the dust content prevents material from sticking in the preheater in a particularly efficient manner.
- a fluid feed is arranged upstream of the mechanical fluidized bed reactor. This can be present in addition or as an alternative to a fluid supply in the mechanical fluidized bed reactor.
- the mechanical fluidized bed reactor has a fuel feed.
- fuel can also be fed in upstream of the mechanical fluidized bed reactor.
- the fuel can be incorporated into the particles formed by agglomeration in the mechanical fluidized bed reactor. This fuel ignites in a later process after its ignition temperature is exceeded, for example in the calciner, and thus leads to a much more targeted heating of the raw material.
- a first riser tube dryer is arranged between the mechanical fluidized bed reactor and the preheater.
- the riser dryer has two advantages. On the one hand, in particular water, which is used in the agglomeration in the mechanical fluidized bed reactor, can be expelled. On the other hand, the material can be transported to the entrance height of the preheater.
- the riser dryer can also be used to adjust the particle size. Particles that are too large can in particular be separated off via the gas velocity and, if necessary, via a separating cyclone or sifter at the upper end of the riser dryer and, in particular, returned to the grinding stage for regrinding or to the ploughshare mixer. It is preferably returned for regrinding in the grinding stage.
- the feed for cement raw material has a grinding stage.
- the device has a return for coarse material from the underside of the riser dryer to the grinding stage. In this way, particles which are either not sufficiently finely ground or have agglomerated to form large particles in the mechanical fluidized bed reactor can be removed and returned to the grinding stage or the fluidized bed reactor.
- the cooler consists of one to eight cyclones. Cyclones allow the cement clinker to cool down quickly and efficiently. At the same time, the process gas is heated in countercurrent. For example, cooling to below 600 ° C. can also be carried out in the absence of oxygen, for example by means of water-cooled cooling screws.
- the preheater and the cooler are preferably constructed from cyclones. As a result, a similar material throughput can be achieved both when the material is heated and when it is cooled, thus realizing a uniform flow of material.
- a homogenization stage is arranged between the grinding stage and the feed for cement raw material to the mechanical fluidized bed reactor.
- the homogenization stage is preferably a mixing silo.
- the starting materials produced by milling in the milling stage can be made uniform over time.
- several silos can also be used, which are filled one after the other and later emptied together, so that the feed streams from the different silos mix and thereby a more uniformity is achieved.
- the invention relates to the use of a device according to the invention for the production of belite, also dicalcium silicate, C2S or 2 CaO S1O2.
- belite is proportionately the most frequent phase of the product, that is to say no other phase has a higher proportion in% by mass.
- the proportion of belite is at least 50% by mass.
- the calciner is designed to be solar thermal. This means that the sunlight is focused in such a concentrated manner on the area through which the particles in the calciner flow through the sun, in particular via mirrors, that the necessary temperatures, possibly also ignition of a fuel located in the particles, is reached. This is possible because the particulate form and thus the good flow behavior as well as the short reaction time required make such a construction possible.
- the invention relates to a method for producing cement clinker, the method having the following steps: a) grinding the cement raw material in one grinding stage, b) preheating in a preheater, c) deacidification in a calciner, d) cooling in one Cooler.
- step d) directly follows step c).
- Particles with a diameter of more than 5 mm become too heavy and have poorer properties in the entrained flow. Furthermore, the particles should be heated up quickly during firing, and carbon dioxide in particular must escape from the particles during firing. Both processes are slowed down and made more difficult if the particles become too large. According to the invention, the upper limit of 5 mm has therefore proven to be usable for technical production. Furthermore, a particle that is too large can burst due to the released CO2 and thereby form a great deal of small, dusty material, which is disadvantageous. All these effects further increase the risk that calcium carbonate will not be converted into calcium oxide and thus deteriorate the product quality. In addition, after firing, the product is cooled at a rate of 1000 C per minute in order to achieve optimum quality. This leaves only a few seconds for the heat transfer to cool the product sufficiently quickly. If the particles become larger, the heat transport during cooling is limited and the interior of the particles can no longer be cooled down quickly enough.
- Particles or even flour or dust with a size smaller than 200 gm, often even smaller than 100 gm can be heated and cooled very easily, carbon dioxide can escape very well and a homogeneous product property is due to the small distance between the interior of the particles and the environment easier to get to.
- the flow properties in a calciner are disadvantageous. Small material is swirled more strongly, the flow is therefore more irregular, whereas particles larger than 200 gm (up to 5 mm) have good flow properties, as known from trickling sand. As a result, a uniform flow and a very uniform residence time and thus a very uniform reaction time are achieved. A very homogeneous product can thus be obtained.
- particle size between 200 gm and 5 mm is that more fuel can be fed to the process than is required for the process, which creates hotter exhaust gases that are then used for other processes, especially in a network or to generate electricity be able. If the particles were smaller, the amount of material carried away as dust from the exhaust gas with hotter exhaust gases would be comparatively large.
- the starting material should advantageously be ground very finely. The finer the materials are ground, the more homogeneous the mixture in the agglomerates is. This is beneficial for the process and product quality.
- step e) is carried out in a mechanical fluidized bed reactor.
- a fluidized bed reactor is particularly well suited to obtain the desired size of the particles between 200 ⁇ m and 5 mm.
- the particles can be used directly without further processing, possibly with the exception of drying, due to the suitable size distribution. Direct use without further storage also prevents the particle size from increasing unintentionally due to further clumping or from decreasing again due to mechanical stress, for example when sieving.
- step e) is carried out with a granulating plate.
- a mechanical fluidized bed and a pelletizing plate is also conceivable.
- step e) is carried out with a material bed roller mill.
- step e) is carried out with a bricket press.
- the material is transferred directly or exclusively via drying after agglomeration in step e) for preheating in step b).
- the Particles can continue to agglomerate or change in other ways.
- fractions are preferably not separated, for example by sieving. On the one hand, the selection of a fraction of 200 gm and 5 mm by sieving on an industrial scale is extremely difficult. It is therefore advantageous if the agglomeration already produces the particle size necessary for the freezing of the product.
- cement clinker For the production of cement clinker, it is unusual for the cement clinker obtained to be cooled directly in a calciner immediately after deacidification. Usually, the actual burning of the starting product to the finished cement clinker takes place in a rotary kiln, which is connected to the calciner. This embodiment is preferred if belite is to be produced as the main component of the cement clinker and an oven is not used in the process.
- the method is particularly preferably used for the production of cement clinker, the main component of which is belite.
- step e) the following step is carried out between step e) and step b): f) drying in a first ascending tube dryer.
- step c) firing in a furnace
- the cement raw material is ground in step a) to sizes smaller than 200 ⁇ m, preferably smaller than 50 ⁇ m, particularly preferably smaller than 10 ⁇ m. Fine grindings of this kind have so far been unusual because these fine particles lead to massive problems in the process, for example due to the formation of dust. On the other hand, such a fine grind enables a much better homogenization and thus leads to a better product quality. This advantage can be used through the subsequent agglomeration in step e) without causing problems in the process.
- a fluid, in particular water is added before and / or in step e). This can support the agglomeration in the mechanical fluidized bed reactor.
- a fuel in particular a fuel with an ignition temperature of 500.degree. C. to 650.degree. C.
- the fuel is coal, coal dust, cellulose or fluff.
- the ignition in the temperature range 500 ° C to 650 ° causes local heating in the calciner. This achieves an extremely fast and evident conversion of the raw materials into cement clinker.
- 2% by weight to 15% by weight, particularly preferably 5% by weight to 10% by weight, of fuel are added. This has two advantages. On the one hand, the heat is generated directly in the material, so no heat transfer is necessary, heating is much faster.
- wet grinding takes place in step a) and subsequent agglomeration in step e) without prior drying.
- the nitrogen content of the gas phase in the preheater is less than 30% by volume, preferably less than 15% by volume, particularly preferably less than 5% by volume.
- This is preferably achieved by carrying out the combustion with oxygen-enriched air.
- the advantage is that, due to the significantly reduced amount of gas, a subsequent separation of the carbon dioxide formed from the gas phase is facilitated. This is advantageous with the agglomeration of the starting material, since dusts interfere with the deposition of the carbon dioxide. Dusts are, however, particularly greatly reduced by the method according to the invention.
- the separation of the carbon dioxide serves to avoid the emission of climate-damaging gases.
- the calciner can be operated in particular 50 ° C to 100 ° C hotter. The increased tendency of the material to build up is avoided by using agglomerated material.
- Fig. 1 First device for the production of cement clinker without a furnace.
- Fig. 2 Second device for the production of cement clinker without a furnace.
- Fig. 3 Third device for the production of cement clinker with a furnace
- a first device according to the invention for the production of cement clinker is shown schematically.
- the starting material is ground in a grinding stage 10.
- the various starting materials are mixed in a homogenization stage 20 and fed to the mechanical fluidized bed reactor 30.
- the material is then conveyed in a rising tube dryer 40. From there, the material passes into the preheater 50 and then into the calciner 60.
- the calciner 60 is heated by means of the burner 80.
- the finished cement clinker passes from the calciner 60 into the cooler 70.
- Both the preheater 50 and the cooler 70 are particularly preferably designed as a cascade of 2 to 8 cyclones.
- the second device shown in FIG. 2 differs from the first embodiment shown in FIG. 1 only in that, for structural reasons, the cooler 70 is divided into a first partial cooler 72 and a second partial cooler 74, the material between the first partial cooler 72 and the second partial cooler 74 is conveyed by means of a riser pipe 90.
- the first partial cooler 72 consists of a cyclone
- the second partial cooler 74 consists of one to eight cyclones.
- a third device with a rotary kiln 100 is shown in FIG. 3. The material reaches the mechanical fluidized bed reactor 30 via a grinding stage 10.
- a homogenization stage 20 can also be arranged in between.
- the material After the mechanical fluidized bed reactor 30, the material is dried and raised in a riser dryer 40 and reaches the preheater 50. From the preheater 50, the material passes via a calciner 60 into the rotary kiln 100 and then into the cooler 100.
- cooler 72 first partial cooler 74 second partial cooler 80 burner 90 riser pipe
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU101612A LU101612B1 (de) | 2020-01-20 | 2020-01-20 | Vorrichtung und Verfahren zur Herstellung von Zementklinker |
| LU101611A LU101611B1 (de) | 2020-01-20 | 2020-01-20 | Vorrichtung und Verfahren zur Herstellung von Zementklinker mit einem mechanischen Wirbelbettreaktor |
| DE102020200605.9A DE102020200605A1 (de) | 2020-01-20 | 2020-01-20 | Vorrichtung und Verfahren zur Herstellung von Zementklinker mit einem mechanischen Wirbelbettreaktor |
| DE102020200604.0A DE102020200604A1 (de) | 2020-01-20 | 2020-01-20 | Vorrichtung und Verfahren zur Herstellung von Zementklinker |
| PCT/EP2021/050369 WO2021148266A1 (de) | 2020-01-20 | 2021-01-11 | Vorrichtung und verfahren zur herstellung von zementklinker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4094029A1 true EP4094029A1 (de) | 2022-11-30 |
Family
ID=74187263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21700685.7A Pending EP4094029A1 (de) | 2020-01-20 | 2021-01-11 | Vorrichtung und verfahren zur herstellung von zementklinker |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4094029A1 (de) |
| WO (1) | WO2021148266A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1051250B (de) | 1954-02-20 | 1959-02-26 | Wilhelm Loedige | Verfahren und Vorrichtung zum unstetigen Mischen von pulverfoermigen oder feinkoernigen Massen mit Fluessigkeiten |
| DE2726138A1 (de) | 1977-06-10 | 1978-12-21 | Kloeckner Humboldt Deutz Ag | Verfahren und vorrichtung zur herstellung von zementklinker aus feuchtem agglomeriertem zementrohmaterial |
| DE2729477A1 (de) | 1977-06-30 | 1979-01-11 | Loedige Maschbau Gmbh Geb | Pflugscharartiges mischwerkzeug |
| DE3705037A1 (de) | 1987-02-17 | 1988-08-25 | Krupp Polysius Ag | Verfahren und anlage zur herstellung von zementklinker nach dem halbnassverfahren |
| DE3834215A1 (de) | 1988-10-07 | 1990-04-12 | Krupp Polysius Ag | Gegenstrom-waermetauscher |
| ATE108090T1 (de) | 1989-10-24 | 1994-07-15 | Loedige Maschbau Gmbh Geb | Verfahren und vorrichtung zum mischen und thermischen behandeln von feststoffpartikeln. |
| DE19706364C2 (de) | 1997-02-19 | 1999-06-17 | Loedige Maschbau Gmbh Geb | Mischwerkzeug |
| WO2008074048A1 (de) | 2006-12-21 | 2008-06-26 | Knoch, Kern & Co. Kg | Verringerung des gehaltes von abgasen beim herstellen von zementklinker |
| CN106630707B (zh) | 2016-12-01 | 2018-11-09 | 济南大学 | 一种利用硅酸盐熟料诱导硫铝酸盐熟料烧成的方法 |
| DE102017202824A1 (de) | 2017-02-22 | 2018-08-23 | Thyssenkrupp Ag | Anlage zur Herstellung von Zementklinker und Verfahren zum Betreiben einer solchen Anlage |
| CN106904848B (zh) | 2017-04-01 | 2019-04-19 | 盐城工学院 | 一次低温烧成贝利特-硫铝酸钙-硫硅酸钙水泥的方法及其制品 |
| CN107352819B (zh) | 2017-07-21 | 2020-01-10 | 长沙紫宸科技开发有限公司 | 一种铝电解槽炭质废料用于生产氟铝酸钙熟料的方法 |
| SK288899B6 (sk) | 2017-10-25 | 2021-09-29 | Považská Cementáreň, A.S. | Spôsob výroby kameniva pre betón a maltu |
-
2021
- 2021-01-11 WO PCT/EP2021/050369 patent/WO2021148266A1/de not_active Ceased
- 2021-01-11 EP EP21700685.7A patent/EP4094029A1/de active Pending
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| WO2021148266A1 (de) | 2021-07-29 |
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