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    • 专利摘要:
    The invention relates to a process for the pretreatment of starting material for producing a mineral melt for the production of continuous mineral fibers, wherein the starting material comprising basalt and at least one binder and optionally quartz sand and / or slag, in particular blast furnace slag, is ground to particles, from the Particles shaped bodies are produced and the shaped bodies are tempered.
    公开号:AT510591A4
    申请号:T2119/2010
    申请日:2010-12-22
    公开日:2012-05-15
    发明作者:
    申请人:Asamer Basaltic Fibers Gmbh；
    IPC主号:
    专利说明:

    ··· «· < ·· ** t «· · '• * * * *« * • «· · * - 1 -
    The invention relates to a process for the pretreatment of starting material for the production of a mineral melt for the production of endless mineral fibers and the use of artificially manufactured form bodies entlastend basalt and at least one binder for the production of endless mineral fibers.
    As mineral fibers usually solidified siliceous fibers are called. One differentiates in the broadest sense short fibers, like staple fibers, rock wool, etc. and endless fibers.
    For the production of endless mineral fibers, the most commonly used mineral fibers are glass fibers, raw materials are usually used and melted with high energy expenditure. Glass melts differ considerably from rock melts. Usually, for the production of endless fibers, the rock raw materials are melted with the addition of further components in order to change the properties of the melt in the desired manner and to adapt it to the respective processing and shaping technology. For example, DE 195 38 599 B4 describes a process for the production of mineral fibers from rock, glassy industrial waste and technical glass waste, wherein after the mechanical separation of non-glassy and predominantly gfashaitigen products, the predominantly glass-containing products having a particle size of less than 80 mm In melted a melting tank, wherein the melting tank is in communication with a feeder channel.
    DE 103 52 323 A1 describes the use of shaped bricks together with effusion rocks, such as basalt and / or diabase for the production of mineral melt. It is a process for producing a mineral melt for the production of mineral fibers, in particular star wool for thermal and / or acoustic insulation and for fire protection, substrates for plant breeding, reinforcing fibers and fibers for filtration purposes, at least from the production originating N201D / 11000 -2-
    Residues and correction substances for adjusting the required composition and viscosity of the melt are comminuted and pressed with a binder into shaped bricks and the bricks are fed to a melting unit. In this melting process, suitable raw materials are melted and then the resulting melt is defibered in a defibration unit. The fraying of the melt takes place, for example, in a so-called drawing, spinning or biasing process. Rockwool is mainly made from blends of crushed effluents, such as basalt or diabase, and small amounts of limestone, dolomite and magnesite as supplements, as well as crushed effusive rocks and coarse blast furnace slags and possibly additional small amounts of limestone, dolomite and magnesite be added to the mixtures alone or in different mixtures with each other. Increasingly, broken raw materials are being replaced by artificially manufactured bodies of appropriate size, shape and strength, composed of various raw materials and residues and suitable binders. These bodies are called shaped stones. The stones may contain fine-grained broken natural rocks. Other components include production-related residues, such as inevitably resulting in the production coarser ingredients, such as Schmetzperlen, the resulting in the regular emptying of the furnaces solidified melt along with the partially melted rock residue and parts of the furnace lining of refractory materials and the insulating materials or substrates that at incurred the trimming of an endlessly produced fiber web. Other production-related residues are waste residues, defective products, or used insulating materials or substrates which are to be melted down. The production-related residues are processed for the production of molded bricks, i. crushed, ground and then mixed with correction materials. With the help of these correction materials, the required composition of the mixture is achieved, which causes a uniform and rapid melting in the smelting unit. At the same time, the temperature and the viscosity of the resulting melt are influenced to such an extent that the most effective, uniformly occurring fiberization process is achieved. Correction materials are, for example, slags from the steel industry, such as converter or ladle slag or melt chamber granules from coal power plants. Substances containing aluminum in oxidic and / or metallic form also apply here as essential correction substances. Suitable carriers are once raw bauxite or calcined bauxite, as well as high-alumina cements, which naturally also have the N 2 O 10/11800 -3-.
    Function of a binder can meet. The granular and fibrous components, the internal residues and the correction substances are mainly mixed with inorganic binders, usually with the addition of water, and then pressed into shaped bodies. After reaching a sufficient for storage in the heap, the promotion and charging strength of the stones, in general, the stones form after 3 days, for example, a minimum compressive strength of about 1-5 MPa reach, these are together with the other raw materials or alone, but always together with required for the melting lumpy fuels, the melter abandoned. In this, the necessary for the fiber formation melt is produced, which is then fed to the fiberizing aggregate. Ingredients of the conglomerates, in particular the Korrekturstofife and / or other batch constituents can be at least partially substituted by granular combustion residues, especially ashes or slags, from the combustion of preferably lignite and / or hard coal dust, paper sludge or wood chips.
    The object of the present invention is to provide a process for the production of continuous mineral fibers, with which high productivity can be achieved.
    The object of the invention is in each case independent by a process for the pretreatment of starting material for producing a mineral melt for the production of continuous mineral fibers, wherein the starting material comprising basalt and possibly quartz sand and / or clay and / or blast furnace slag is ground to particles, moldings are produced from the particles and the moldings are tempered, and the use of artificially prepared moldings comprising basalt for the production of endless mineral fibers is achieved. Advantageously, it turns out that uniform conditions in the molten rock can be created compared to conventional melting process, where the raw materials are introduced in uncompacted form in the furnace, and thus the different melting temperatures of different raw materials come into play. In addition, a dusting or a Ausbiasen of fine-grained additives, for example, by flame gases, and / or segregation of different starting materials or raw materials are prevented in the furnace. It also makes it easier to comply with the MAK values. Due to the homogeneous properties of the molded bodies introduced into the melting furnace, they can achieve uniform properties of the melt and thus also produce uniform, continuous mineral fibers which, in turn, produce the usable properties.
    N2010 / 11BDO 4 of the mineral fibers and the mineral fiber products made from them.
    By compacting into shaped bodies, the individual particles are so close to each other that they can react faster compared to loose particles, where there are high ceilings in between.
    The use of the moldings produced according to the invention for producing endless mineral fibers, in particular basalt fibers, also results in better meterability. In addition, a pre-reaction takes place before the complete melting of the starting materials in the melting furnace, which results in higher strengths than in conventional glass and basalt fiber materials.
    It is advantageous that the starting material has a residual moisture with a lower limit of 1% and an upper limit of 20%, whereby sticking of the mill during grinding can be prevented or delayed.
    The starting material is preferably ground into particles having a size of less than 500 μm, in particular 200 μm, preferably 100 μm, thereby facilitating the production of uniform shaped bodies.
    The shaped articles can be produced by granulation or pelleting, extrusion, spray drying, expansion, etc., which makes possible a better processability of the starting material.
    The production of the molded articles can be carried out by adding a binder selected from a group comprising water, clay, bentonite, sulfite lye, cellulose derivatives, saccharide, sugar, starch, molasses, phosphates, cement, organosilicon substances in an amount with a lower limit of 1% and an upper limit of 40% can be carried out, whereby even fine-grained additives can be introduced into the batch without this dust in the further manufacturing process or blown out.
    The shaped bodies can be provided, at least in regions, with a coating of substances selected from a group comprising mineral flour, liquid dust, fly ash, slag-mehi, clay, whereby at least partially rounded and coated shaped bodies are formed, which can be advantageously used in the melting furnace. N2010 / 11600 • 9 • · · I · · «* * *« «« * * * * * · * »*» »*
    In a further development of the invention, a binding of the coating by the and / or other binder, such as organic binders selected from a group comprising substances based on sugar, lignin, lignosulfonates and / or inorganic binder selected from a group comprising substances Base of cement, silicic acid solutions can be performed, whereby an improved adhesion of the coating can be achieved on the Formkörpem.
    Further, at least one accelerator may be incorporated in an amount having an upper limit of 20% and a lower limit of 0.1% for producing and / or coating the molded articles, whereby the production or coating process can be shortened. In addition, the chemical or physical properties of the Fonmkörper can be improved by the accelerator substance. As an accelerator, for example, those of the cement industry can be used.
    Shaped bodies, in particular green granules, with a size having an upper limit of 30 mm and a lower limit of 1 mm, preferably 10 mm, prove to be particularly advantageous because the energy input for melting the shaped bodies in the melting furnace can be kept low without the melting properties being negative to influence.
    The moldings are tempered at a temperature with an upper limit of 1000 ° C and a lower limit of 50 ° C, which on the one hand better physical properties, such as higher abrasion resistance and less flaking can be achieved and on the other hand eliminates the space required for storage for drying.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same designations, wherein the disclosures contained in the entire description can be mutatis mutandis transferred to like parts with the same designations. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to the new situation mutatis mutandis when a change in position. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions. All statements on ranges of values in the description of the present invention should be understood to include any and all sub-ranges thereof, e.g. is the
    N2010 / 11S00 -6- let's assume that all subregions are included, starting from the lower limit 1 and the upper limit 10, i. all subregions begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 6.1 or 5.5 to 10.
    Basalt is understood to mean a basic effusion rock in the context of the invention. It consists mainly of a mixture of iron and magnesium silicates with olivine and pyroxene and calcium-rich feldspar (plagioclase). Predominant mineral groups are Plagioklase, Pyroxene, as predominantly as Augit or Diopsid. Olivine, biotite, amphibolite, such as hornblende, algal feldspar, quartz, homfels, and foide occur in some basalt occurrences. Also, diabase, melaphyr, foidite, latite, phonolite, melilite, pikrit, tephrite, andesite, porphyry, spilit, trachyte, etc. are understood in the context of the invention basalt. All in all, basalts have a very variable structure due to their chemical composition, which is in contradiction to their rather uniform appearance.
    In the context of the invention, the mineral fibers, in particular continuous mineral fibers, are MMMF (man-made mineral fibers) - ie synthetically produced mineral fibers.
    The starting material! In addition to basalt and at least one binder, it may also comprise quartz sand, clay, kaolin, blast furnace slag, etc., and is ground in a first working step, although it may already be mixed before grinding. As starting material and minerals and raw materials can be selected from a group comprising Metallverbindungsn, such as manganese, titanium, copper, cobalt compounds, Alka-liverblndungen, sodium, potassium compounds alkaline earth compounds such as magnesium or. Barium compounds are used.
    Of course, the starting material can also be mixed only during or after grinding. The mix and regrind of the starting material can be based on approx. 50% basalt, approx. 20% blast furnace slag, approx. 30% quartz sand and clay. In alternative embodiments, the Ausgangsmateria! also only basalt, or, only selected additives such as blast furnace slag, quartz sand or clay include. It is also possible other substances the Ausgangsmateria! admix. Further details on the composition of the starting material can be found in the patent application "raw material for the production of basalt fibers" by the applicant of 23.12.2010. N2010 / 11800
    Moldings are produced from the millbase, a shaped body being an aggregate of at least 3 particles.
    The grinding can be carried out dry, for example, in a continuous mill DM1230 in the closed visual cycle, the diameter of the mill is 1.2 m and the length is 3.0 m and 12 Hubleisten arranged and is ground by about 51 balls as grinding media. The milled particles are recovered in a discharge wall with slots. In addition, a sifter can be arranged. The particle size distribution shows that approximately 80% of the particles have a size of 20 μπ to 100 μm. The starting material is preferably withdrawn from silos or Blg-Bag stations. Furthermore, it can be added to the mill by means of weighfeeder and screw. After it has passed through the mill, it passes through the discharge wall, screws and the bucket elevator to the feed screw of the classifier. There it is applied to the sifter and the particles are conveyed to the desired final fineness in big-bag stations. The excessively coarse material (green) is returned to the grinding chamber via screws and is ground until it reaches the desired particle size.
    In an alternative embodiment, particles are used with a size of 200 μιτι to form the moldings, which are produced by an open mill mode.
    Moldings are produced by various processes such as granulation, pelleting, extrusion, expansion, spray drying, etc., which are solid, transportable and meterable. The shaped bodies preferably have a compacted form.
    When granulating either large particles or very small particles with different particle size (powder) are transformed into a particle size of narrow particle size.
    An advantage of using a granulating mixer proves that the preparation of the starting material for the molding as well as the granulation and the powdering in an apparatus, can be performed without additional handling. The moldings produced, in particular granules, are mechanically comparatively stable. The Brich Intensive Mixer R02, R05 / T or R11 is not only suitable for the simple mixing of powdery materials or particles, but also for their granulation. The advantage is that this can be a homogeneous Komband produced N2010 / 11800 -8-. The mixer R11 has a filling volume of 2501 and a swirler speed range from 80 rpm to 800 rpm.
    The special mixing rotor and the inclined mixing bowl of the mixer contribute significantly to this.
    The mixer, as the main aggregate of the granulating plant, is usually filled and operated in automatic mode, depending on the material, by recipe control by means of a PLC control. Several different raw materials, delivered in Blg bag and / or silo vehicle, can be processed. In one embodiment, the starting material is transported by pneumatic conveyor from the recipe scale in storage containers and then filled into the mixer. Precondition for the automatic operation Is, in addition to a suitable granulation behavior of the starting material to be processed, the exact knowledge of the optimal granulation parameters, such as mixing sequence, mixing times, speeds, energy input, etc.
    Instead of the automatic mode, the granulating machine can also be operated in manual mode, such as e.g. in complex granulation processes, the testing of new processes as well as small quantities in order to be able to ensure the granulation result, to be able to determine the optimal process parameters and to calculate the fixed costs for small-scale tests {e.g. Preparation and cleaning effort) to minimize.
    In order to stimulate the granulation but also a binder, preferably water must be added. A defined amount with a lower limit of 60% and an upper limit of 99% dry matter, e.g. Feedstock in particulate or flour form, basalt particles or flour, with a certain amount with a lower limit of 1% and an upper limit of 40% water in the mixing pot abandoned.
    After starting the mixing process, the dry matter is mixed with the binder and by the short-term max. smash high-speed mixing rotor into so-called microgranules.
    The microgranules are necessary for breeding the final product. After the smashing phase (micro-granule production), the speed of the mixing rotor is reduced in order to obtain a growth of the shaped bodies. The granulation process is monitored during initial tests constantly by sampling until the desired granule size is reached. Then N2010 / 11800 -9- «*» «« ft * «ft 4» • »· · · · t • *« »·» I ·· »* ♦« · t · • 4 · «« ««
    the speed of the mixing rotor and the mixing pot for max. 30 seconds drastically reduced, during this time, if necessary, the too moist granules must be set by adding dry matter.
    The binder, preferably water, is added to the particles in a mixing rotor and subsequently the mixing rotor is operated for a short time at a very high speed in order to produce microgranulate and subsequently the mixing rotor is operated at a lower speed. The particles are added in an amount with a lower limit of 70% and an upper limit of 95% and binder in an amount with a lower limit of 5% and an upper limit of 30% and for a period with a lower limit of 10 Seconds and an upper limit of 30 minutes mixed. To the particles, for example, ground raw material is added to the mixing rotor at low speed to bind the green granules.
    The granulation process must be stopped as quickly as possible after setting (powdering) with dry matter, since under certain circumstances larger lumps may form. If this happens, you can sort them out with a small number of shares by hand. If too many lumps are present, it is possible to save the batch by re-executing the mixing program.
    But the addition of dry matter must also be taken care that not too much is added, otherwise the too high proportion of fines in the Nachfoigeschritten leads to excessive dust.
    After completion of the granulation process, the granules can be dried or tempered. For the task on a conveyor belt in a pre-fusing furnace, a granule size of 5 mm to 8 mm has proved to be advantageous.
    It is important for an approximately constant quality of the granules that the dry matter is always dry to process. If the dry matter is too moist, the binder level previously determined for the recipe will be too high. As a result, the mixing process is disturbed and it must be readjusted by correction, such as hand addition of dry matter, the batch
    For example, a swiveling bar granulator may be used to form bar-shaped shaped bodies, the pasty mass of rock particles being pressed through a perforated plate N2010 / 11B00. Such a pivot bar granulator is known in the art (e.g., EL-A swing bar granulator). With the ELA swivel bar granulator rod-shaped moldings can be produced. Depending on the extrusion plate (perforated plate), the bar diameter varies from 6 mm to 15 mm. The length of the bar granules can not be directly influenced, but is determined or caused by the fracture property of the extrusion mass (basalt mass).
    Before the granulation can be started, the granulate mass must first be prepared in an extra step. For experimental quantities, the Maese can be stirred by hand in a mixing trough. For larger quantities this is taken over by a mixer. Belm Stirring the mass is to ensure that it has the right consistency. If the mass is too soft, the granules do not break and there are long rods which also stick together. If the granules are stirred too tightly, it is no longer possible to push the mass through the pore. This is precisely where a weak point of this system lies in order to obtain an acceptable granulation result. In order to obtain a favorable ratio of the granule length in relation to the diameter, the granular mass must be mixed to a more solid consistency. This results in the processing of the mass that the granulator clogged after a few extrusion strokes. For this reason and that of the additionally preceding mixing process, this system is more complex.
    During extrusion, viscous curable materials are pressed through a specially shaped die in a continuous process. The result is bodies of the cross section of the nozzle of any length.
    For this purpose, ground starting material with binder, in particular water, is added to produce a starting material. In order to obtain a readily processable starting material which does not stick in the extruder but is still drawn into the apparatus, another fluid, preferably a surfactant, can be added. This is fed to the extruder where extrusion takes place. In order to obtain transportable and meterable pellets, the extrudate is preferably powdered. The more or less large, rod-shaped pellets produced in the extrusion process are bed drying or, on tempering, mechanically more unstable than granules and are therefore more prone to breakage and to the formation of fine particles.
    Expansion (thermal expansion) is the change in the geometric dimensions (length, area, volume) of a body caused by a
    N2010 / 11BOO -11 -
    Change in its temperature. The reversal of this process by cooling is often referred to as heat shrinkage. The characteristic value is the expansion coefficient.
    Spray drying (also atomization drying) is a method used in process engineering for drying solutions, suspensions or pasty materials. Through various types of nozzles in the spray head of a spray dryer is by means of a nozzle (operated by liquid pressure, compressed air or inert gas) or rotating atomizer discs (4,000-50,000 rev / min) the material to be dried in a hot air stream (temperatures up to 220 ° C depending on the apparatus) which dries it to a fine powder in fractions of a second.
    During tempering, in particular drying, of the shaped body, in particular of the granulate, the aim is to achieve as continuous a process as possible and a high drying capacity. For annealing the molded body, a chamber furnace, fluidized bed dryer, belt dryer or the like can be used. Annealing is preferably carried out at a temperature with a lower limit of 50 ° C and an upper limit of 1000 * 0 for a period of 2 to 15 minutes, with a residual moisture content of about 1% of the moldings to be achieved. Preferably, the temperatures are about 300eC + 50 ° C.
    For example, the chamber furnace from Hofmann Wärmetechnik and Ernst Reinhardt GmbH is suitable as a dryer. The moldings to be dried are placed at a height of about 35 to 40 mm on drying plates and then dried for 3 hours at 250eC in the oven. After cooling of the moldings they may have a residual moisture content of max. 1%. Thus, no continuous process is possible and the dry performance is less than 100 kg / h.
    As a belt dryer, for example, an EAL BT3 / 2 experimental belt dryer can be used. He may have an ELT conveyor belt, Runddrahtgefiecht, Drahtösengiiederband the Fa. Märtens, air and liquid permeable, temperature resistant. Air dryer hoods, infrared dry hoods, etc. may be arranged. Belt dryers have a high dry performance, e.g. 170 kg / h or 220 kg / h, with a residual moisture content of less than 1%. In addition, a direct material input and a continuous operation with low dust formation and low energy consumption (6kW) are possible. The maximum drying temperature is preferably 160 ° C to 250 ° C. N2010 / 11800 • · · * * «* * · ·· • * *
    A fluidized bed dryer has a high drying capacity of 200 kg / h and allows continuous operation through direct material feeding, but with a high space requirement. The energy consumption is very high with 140 kW and the granules rub off each other with a vibratory trough conveyor, which results in a high dust content.
    A hot air drying belt is suitable for drying the green granules conditionally, the dry power is very low.
    The green granules can also be tempered in a rotary kiln, in particular a directly heated rotary kiln. The rotary kiln can be coupled directly to the granulating plant, for example convey the conveyor belt and bucket elevator green granules in a buffer tank, and allows a continuous thermal treatment. The moldings to be dried may be fine to coarse-grained or lumpy. The directly heated rotary kiln is fired with a natural gas burner. The molded articles to be tempered are removed by means of suitable metering means, e.g. Dosing belt weigher, direct, for example, conveyed by means of conveyor belts in the oven. Dia obtained at the kiln outlet mold fall through a shaft to the subsequent rotary tube cooler and are cooled and welter processed as required and packaged.
    Preferably, the green granules are tempered in the directly heated rotary kiln at a starting temperature of 300 ° C. (temperature in the sinter, approx. 2.6 m before the kiln outlet) and a feed throughput of 400 kg / h. The specified temperature is a mixing temperature of gas and material temperature, which is subject to a certain fluctuation range. The dried at 300 ° C granules is solid, capable of conveying and dosing. Also starting temperatures of 200 ° C and 400 ° C and tempering temperatures of 300 "C and a throughput between 300 kg / h and 500 kg / h gives a satisfactory result.
    By annealing in the bricked, directly heated rotary kiln no significant increase of the Felnkornanteiis compared to the undried granules is detected.
    In one development of the invention, the tempering systems can be coupled to a classifying station, with which a continuous product classification is possible and defective shaped bodies can be removed from circulation for a possible recycling process. In one development of the invention, molded body manufacturing systems and / or the tempering systems can be coupled to a further station, where a coating of the shaped bodies can take place. However, the coating of the moldings can also already N2010 / 11600 -13- in the moldings manufacturing plant, such as Eirich intensive mixer, extruder, etc. or the tempering, such as belt dryer, chamber furnace, rotary kiln. etc. take place. The coating can be carried out with substances selected from a group comprising mineral flour, filter dust, fly ash, slag meal, clay. The bonding of the coating may be achieved by binders such as organic binders selected from a group comprising sugar, molasses, lignin, lignosulfonates and / or inorganic binders selected from a group comprising water, cement-based materials, bentonite, sulfite liquor, silicic acid compounds respectively. The thus coated and thus also partially rounded moldings can be advantageously used in the melting furnace.
    In addition, fans can be arranged, which are suitable to suck dust and granular materials. Preferably, fans are used with high efficiency.
    Below, different embodiments for granulation of the ground particles anusgeführt.
    Exemplary embodiment 1
    50% basalt, 20% blast furnace slag, 30% quartz sand and clay dust are prepared in an open loop grinding mill in an Eirich R02 laboratory mixer. To achieve the grain target values, slightly longer mixing times are required. A very uniform graining band is produced, the formation of too much fine grain < 1 mm should be avoided.
    The following parameters are used:
    Starting material% 9 millbase 87-87.7 3000 water 12.3-13 {14 .15% based on solids) 420-450 total 100 3300
    In addition to the specified starting materials, the moldings were powdered with approximately 5% millbase per mixer batch after completion of the granulation in order to transport N2010 / 11800
    and meterable moldings, in particular green granules, to produce, which can be further processed. For a favorable mixing process, the following process steps with the following parameters for particles from the open grinding cycle are favorable:
    No. Step Mass [g] Time [s] Swirl speed [rpm] 1 Filling with solid particles 3000 - - 2 Mixing - 30 3000 3 Filling with fluid, preferably water 420-450 - - 4 Mixing - 30-60 3000 5 Mixing - 480 -600 1500 6 Filling with solid particles (powders) 150 - - 7 Mixing - 10 1500 8 Draining - - -
    This means that after filling with solid particles and fluid, in particular water, the material compacts at a comparatively short mixing time but high speed, ie high energy input, to a microgranulate, which grows at low speed, ie low energy input to coarser granules. This growth process can be influenced with the addition of fluid and solid. The disadvantage here is that the danger of the emergence of larger Unterkomanteilen exists.
    Embodiment 2
    The moldings are produced in an Eirich mixer size R11. There are also used from an open Mahrkreislauf hergesteilte particles according to the composition in Example 1.
    Recipe for the preparation, in particular granulation on R11
    Starting material% kg regrind 87 200 water 13 (15% based on solids) 30 N2010 / 11800 total 100 230
    Mixing effluent for granulation at R11 for particles from the open grinding circuit
    No. Step Mass [kg] Time [s] Swirl speed [rpm] 1 Filling with solid particles 200 - - 2 Filling with fluid, preferably water and mixing 30 60 800 3 Mixing - 30 800 4 Mixing - 600 300 5 Filling with solid particles (powdering ) 10 - - 6 Mixing - 10 300 7 Draining - - -
    The amount of fluid can also be reduced to 12% (24 kg) based on the solid particles, which is favorable for the moisture content (transportability) of the green granules and thus also for the subsequent tempering The strength of the granules was not reduced, With the reduction in the amount of fluid However, also increases the required Granulierzeft at low speed to produce granules in the desired grain size.
    Implementation Example 3
    An attempt is made to further optimize the mixing process, whereby the overall mixing process should be suitable for a possible automatic operation and at the same time not produce additional sub-terkom. The starting material is composed and ground as in Ausführungsbeisplel 1 and 2.
    Starting material% kg regrind 88.9 200 water 11.1 (12.5% based on solids) 25 total 100 225
    Mixing sequence for granulation at R11 for particles from the open grinding slurry N2010 / 11000
    No. Step Mass [kg] Time [s] Whirling speed [rpm] 1 Fill with solid particles 200 - - 2 Fill with fluid, preferably water and mix 25 60 800 3 Mix - 30 800 4 Mix - Θ00-720 300 5 Fill with solid particles (Powder) 10 - - 6 Mixing - 10 300 7 Emptying - -
    Embodiment 4
    The composition of the particles corresponds to those of the embodiments 1 to 3, wherein the particles were obtained in a closed grinding circuit. The starting material is more difficult to granulate.
    Recipe for granulation on R11
    Starting material% kg regrind 88.9 200 water 11.1 (12.5% based on solids) 25 total 100 225
    Mixing procedure for granulation at R11 for particles from the closed grinding cycle
    No. Step Mass [kg] Time [s] Whirling speed [rpm] 1 Fill with solids particles 200 - - 2 Fill with fluid, preferably water and mix 25 60 800 3 Mix - 30 800 4 Mix - 1200-1500 300 5 Fill with solid particles (powders) 10 - - N2010 / 11800 - 17 - • · »» * * '«« «6 Mixing - 10 300 7 Draining - - -
    It takes a much longer mixing time.
    Embodiment 5
    In order to reduce the longer meal of the particles obtained in the closed-loop process, an alternative mixing process is cited. An attempt is made to grow the microgranules initially produced faster by adding fluid and solid in between. In contrast to similar experiments on particles produced in the open milling cycle, this works better within certain limits with particles from the closed grinding circle. However, the resulting Feinkom proportion is apparently higher.
    Milling sequence for granulation at R11 for particles from the closed grinding cycle
    No. Step Mass [kg] Time [s] Swirl speed [rpm] 1 Fill with solid particles 160 - - 2 Fill with fluid, preferably water 23 60 800 3 Mix - 10 800 4 Mix - 180 400 5 Fill with solid particles (powders) 40 - - 6 Filling with fluid, preferably water 2 - 400 7 Mixing - 120 400 8 Mixing - 600-900 250 9 Filling with solids particles (powders) 10 - - 6 Mixing - 10 250 7 Draining - - -
    As a result, particles from the open grinding circle are better suited, since the mixing times for the same formulation are lower here. For particles from the closed circuit, although longer mixing times but simultaneously less fine grain result. at
    N2010 / 11SOO -18-
    The use of particles from the open grinding circle results in shorter mixing times but more fine grain, whereby subcommerce recycling can be applied here.
    Particles from the open grinding circuit can be better granulated with respect to particles from the closed grinding cycle, ie with a shorter mixing tent with a low energy input. The cause is probably the finer grain size of the particles from the closed grinding cycle.
    Subgrain recycling Is possible for particles from the open grinding circle as well as particles from the closed grinding circle. In this case, the Unterkom is screened at comparatively little time and the granulation, e.g. as a substitute for the microgranulate produced with high energy input, fed back on the one hand, on the one hand, raw material can be saved and also classified, virtually subcommerce product can be produced.
    After the microgranulate has formed, granulate growth into the target granule region is thus possible with a high energy input and with a low energy input but a sufficiently long mixing time.
    The product yield for annealed shaped articles is between 70% and 95%, in particular 87% to 88%, for particles from both the open and the closed grinding circuit.
    The above-mentioned parameters for the granulation process are only to be understood as examples. The granulation process can be influenced with regard to the mixing time and product flow. The influence is mainly due to the interim addition of fluid and solid during Mischabiaufs possible. However, there is a danger of generating larger quantities of subcommerce <1 mm.
    Basaitfasem, as disclosed in the patent application "basalt fibers" of the applicant of 23. 12. 2010, can be prepared by the method according to the invention, which also applies to their content in this application as disclosed.
    The embodiments show possible embodiments of the method according to the invention, it being noted at this point that the invention is not limited to the specifically illustrated embodiments of the same, but also various combinations of the individual embodiments are possible with each other and this possibility of variation due to the teaching of technical action N2010 / 11800 - 19-
    genständliche invention in the skill of those working in this technical field is the expert. So are all conceivable embodiments, which are possible by combinations of individual details of the illustrated and described embodiment variant, includes the scope of protection.
    The task underlying the independent inventive solutions can be taken from the description. N2010 / 11600
    权利要求:
    Claims (14)
    [1]
    -1 - Φ »··« tl «ι * · φ · ·» * ··· «* · ** ·· **« «· · · · ··· * Μ4» * &lt; 1. A process for the pretreatment of starting material for producing a mineral melt for the production of endless mineral fibers, characterized in that the starting material, which basalt and at least one binder and optionally quartz sand and / or slag, in particular blast furnace slag is milled into particles, moldings are produced from the particles and the moldings are tempered.
    [2]
    2. The method according to claim 2, characterized in that the starting material has a residual moisture with a lower limit of 1% and an upper limit of 20%.
    [3]
    3. The method according to claim 1 or 2, characterized in that the starting material is ground into particles having a size of less than 500 Dm, in particular 200 □ m, preferably 100 dm.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the shaped bodies are produced by moistening and optionally mixing, granulation, Pelletie-tion, extrusion, spray drying or expansion.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that the production of the shaped body by adding a binder selected from a group comprising water, clay, bentonite, sulfite, cellulose derivatives, saccharides, sugar, starch, molasses, cement, phosphates, organosilicon substances is carried out,
    [6]
    6. The method according to claim 5, characterized in that the binder is added in an amount with a lower limit of 1% and an upper limit of 40%. N2O10 / 11BD0 -2- • I 9 9 9 9 9 9 9 99 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 m * 9 ι ι 9
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the shaped bodies are at least partially provided with a coating.
    [8]
    8. The method according to claim 7, characterized in that the coating is carried out with substances selected from a group comprising mineral flour, filter dust, fly ash, slag meal, clay,
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that a binding of the coating selected by the and / or other binder, such as organic binders selected from a group comprising substances based on sugar, lignin, Ugninsulfonata and / or inorganic binders from a group comprising substances based on cement, solutions of biosolic acid.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that at least one accelerator selected from a group comprising CO 2, water glass, gypsum, CaCl 2, for the production of the shaped body is added.
    [11]
    A method according to claim 10, characterized in that an amount of the accelerator having an upper limit of 20% and a lower limit of 0.1% is added.
    [12]
    12. The method according to any one of claims 1 to 11, characterized in that molded bodies, in particular green granules, having a size with an upper limit of 30 mm and a lower limit of 1 mm, preferably 10 mm, are produced.
    [13]
    13. The method according to any one of claims 1 to 12, characterized in that the shaped bodies at a temperature with an upper limit of 1200eC and a lower limit of room temperature wörmebehandelt, in particular tempered, become. N2010 / 11800 -3-


    14. Use of artificially produced molded articles produced according to egg nem method according to one of claims 1 to 13 containing basalt for the production of endless mineral fibers, in particular basalt fibers. Asamer Basaltic Fibers GmbH by Attorneys BUH ^ erS Partner Attorney at Law N201Q / 118D0 (New) Claims 1. A process for the pretreatment of starting material for producing a mineral melt for the production of endless mineral fibers, characterized in that the starting material, which basalt and at least one Binder and optionally quartz sand and / or slag, in particular blast furnace slag comprises, is ground to particles, moldings are produced from the particles and the moldings are annealed. 2. The method according to claim 2, characterized in that the starting material has a residual moisture with a lower limit of 1% and an upper limit of 20%. 3. The method according to claim 1 or 2, characterized in that the starting material to particles having a size of less than 500 pm, in particular 200 pm, preferably 100 pm, is ground. 4. The method according to any one of claims 1 to 3, characterized in that the shaped bodies are produced by moistening and optionally mixing, granulation, Pelletie-tion, extrusion, spray drying or expansion. 5. The method according to any one of claims 1 to 4, characterized in that the production of the shaped body by adding a binder selected from a group comprising water, clay, bentonite, sulfite, cellulose derivatives, saccharides, sugar, starch, molasses, cement, phosphates, organosilicon substances is carried out. A method according to claim 5, characterized in that the binder is added in an amount with a lower limit of 1% and an upper limit of 40%. 7. Process according to one of claims 1 to 6, characterized in that the shaped bodies are provided at least in regions with a coating. 8. The method according to claim 7, characterized in that the coating is carried out with substances selected from a group comprising mineral flour, filter dust, fly ash, shellac, clay. 9. The method according to any one of claims 1 to 8, characterized in that a binding of the coating by a binder, such as organic binder selected from a group comprising substances based on sugar, lignin, lignin and / or inorganic binder selected from a group comprising Substances based on cement, silicic acid solutions is carried out. 10. The method according to any one of claims 1 to 9, characterized in that at least one accelerator selected from a group comprising CO 2, water glass, gypsum, CaCl 2, for the production of the shaped body is added. 11. The method according to claim 10, characterized in that an amount of the accelerator is set with an upper limit of 20% and a lower limit of 0.1%. 12. The method according to any one of claims 1 to 11, characterized in that molded bodies, in particular green granules, having a size with an upper limit of 30 mm and a lower limit of 1 mm, preferably 10 mm, are produced. 13. The method according to any one of claims 1 to 12, characterized in that the shaped bodies at a temperature with an upper limit of 1200 ° C and a lower limit of 50 ° C heat treated, in particular tempered, become. REPLACED - 3-
    [14]
    14. Use of artificially produced moldings produced according to egg nem method according to one of claims 1 to 13 containing basalt for the production of endless mineral fibers, in particular basalt fibers.

    Asamer Basaltic Fibers GmbH by wuML lawyers ^ arger &amp; Partner Attorney GmbH FOLLOW-UP
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    同族专利:
    公开号 | 公开日
    EP2665687A1|2013-11-27|
    CN103502160A|2014-01-08|
    EP2665687B1|2019-07-03|
    AT510591B1|2012-05-15|
    RU2013133836A|2015-01-27|
    WO2012083335A1|2012-06-28|
    AT510591B8|2012-10-15|
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    法律状态:
    2016-06-15| PC| Change of the owner|Owner name: ASA.TEC GMBH, AT Effective date: 20160415 |
    2021-08-15| MM01| Lapse because of not paying annual fees|Effective date: 20201222 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA2119/2010A|AT510591B8|2010-12-22|2010-12-22|PRE-TREATMENT OF RAW MATERIAL FOR THE MANUFACTURE OF BASALT FIBERS|ATA2119/2010A| AT510591B8|2010-12-22|2010-12-22|PRE-TREATMENT OF RAW MATERIAL FOR THE MANUFACTURE OF BASALT FIBERS|
    EP11819045.3A| EP2665687B1|2010-12-22|2011-12-21|Pre-treatment of raw material for producing basalt fibers|
    PCT/AT2011/050052| WO2012083335A1|2010-12-22|2011-12-21|Pre-treatment of raw material for producing basalt fibers|
    RU2013133836/03A| RU2013133836A|2010-12-22|2011-12-21|PRELIMINARY PROCESSING OF RAW MATERIALS FOR PRODUCING BASALT FIBERS|
    CN201180066694.3A| CN103502160A|2010-12-22|2011-12-21|Pre-treatment of raw material for producing basalt fibers|
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