JP2007285807A - Method and device for manufacturing high-dispersion-particle-containing material molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture a molding of material with particles dispersedly embedded therein without agglomerating. <P>SOLUTION: A device comprises a holder 3 and an ultrasonic vibrator 4, with the holder 3 used for therein putting a particle material and a particle embedding material 2 in liquid form. This device solidifies the embedding material 2 while giving ultrasonic vibration to the material 2 by means of the vibrator 4. As the material 2, a heat-melting material is used wherein its particles change into a liquid that can flow by being heated while the liquid changes into a solid by being slow cooled. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method and an apparatus for producing a molded body of highly dispersed fine particle-containing material. More specifically, the present invention relates to a highly dispersed fine particle-containing material molded body production method and apparatus suitable for use in producing, for example, electron microscope observation pellets and wax containing abrasive particles.

  There is a CCSEM (Computer Controlled Scanning Electron Microscope) analysis method as an analysis method of unburned particles (also called char) generated in the course of combustion and gasification reactions and mineral particles in pulverized coal. In this CCSEM analysis, a resin molded body in which a fine particle sample to be analyzed is dispersed and embedded is used as an observation pellet.

  The observation pellets used for CCSEM analysis are prepared by mixing the sample and the resin, placing the container containing the mixture in a heater to melt the resin, and after the resin is completely melted, remove it from the heater. It is manufactured by stirring the inside of a container using a suitable stick. At this time, the sample-containing resin taken out of the heater loses viscosity in 1 to 2 minutes and solidifies, and the stirring is continued until just before solidification (Non-Patent Document 1).

  In addition, as a conventional method for producing a resin molded body in which a fine particle material is dispersed and embedded, a resin and a metal alkoxide and / or an organometallic alkoxide are made hydrophilic in a reactor equipped with a reflux condenser and a stirrer. Add colloidal silica and / or colloidal alumina and water dissolved in a solvent and dispersed in a hydrophilic organic solvent, stir for about 30 minutes, remove the hydrophilic organic solvent, and extrude at 150 to 330 ° C. with an extruder or the like. A method of melt kneading and molding by extrusion molding or the like is known (Patent Document 1). Such a method of embedding a fine particle material in a heat-melted material and then solidifying it is called a melting method.

Teramae and Yamashita: Lecture “Today and Tomorrow of Black Things Analysis” (1), Journal of the Japan Institute of Energy, Vol. 76, No. 10, pp. 988-994, 1997 JP-A-10-36686

  However, when the present inventors analyzed ash particles of pulverized coal having different average particle sizes by CCSEM analysis using pellets for observation prepared by a conventional melting method, generally, pulverized coal is pulverized. Measured in the analysis of pulverized coal samples with an average particle size of about 12 μm, although the ratio of ash particles released from the pulverized coal particles and the exposed ash particles increases as the particle size of the pulverized coal particles decreases. A result considered to be an error was observed (FIG. 2). Specifically, regarding the analysis results of the pulverized coal samples having an average particle diameter of about 76 μm and about 34 μm, the smaller the average particle diameter, the higher the ratio of the exposed ash particles (in the figure, symbol ◯) As for the analysis result of the pulverized coal sample having an average particle diameter of about 12 μm, the ratio of the exposed ash particles is extremely low (symbol ▲) in spite of the smaller average particle diameter. In addition, as a ratio, the ratio (% by weight) of the weight of the exposed ash particles to the total of the weight of the ash particles contained in the pulverized coal particles and the weight of the exposed ash particles released from the pulverized coal particles is used. .

  In addition, the difference in the density of the dispersion of the pulverized coal particles in the observation pellets is remarkable, and from the electron micrograph (FIG. 3) of the observation pellets used for the CCSEM analysis, fine particle agglomeration occurs. It was confirmed that it was difficult to distinguish adjacent particles in the portion where the density of the particles was high. Because of this, the dispersion of the pulverized coal particles in the pellet is insufficient, and in the CCSEM analysis, the ash particles are erroneously recognized as being contained in the pulverized coal particles even though they are actually exposed ash particles. It was thought that a measurement error was caused by this. In FIG. 3, reference numeral 20 denotes pulverized coal particles, reference numeral 21 denotes ash particles contained in the pulverized coal particles, and reference numeral 22 denotes exposed ash particles released from the pulverized coal particles.

  From this result, in the observation pellets prepared by the conventional melting method, when the particle size of the fine particle sample is smaller than a certain size, the fine particles become dense due to the aggregation of the fine particles generated in the observation pellet preparation process. It is considered that an error is likely to occur. This is not limited to the production of observation pellets used for CCSEM analysis, but can occur in the process of dispersing fine particles.

  Therefore, it is desired to produce an observation pellet in which fine particles are uniformly dispersed without agglomeration.

  SUMMARY OF THE INVENTION The present invention meets such a demand and an object of the present invention is to provide a method and apparatus for producing a fine particle-containing material molded body that can produce a molded body of a material in which fine particles are dispersed and embedded without agglomeration. .

  While repeating trial and error in producing an observation pellet that does not cause a measurement error even when used for CCSEM analysis, the present inventors give ultrasonic vibration to a liquid material in which a fine particle sample is embedded. Has been found to be effective in preventing aggregation and dispersion in the material.

  The method for producing a highly dispersed fine particle-containing material molded body according to claim 1 is based on the above knowledge, while placing a fine particle material and a liquid fine particle embedding material in a holder and applying ultrasonic vibration to the fine particle embedding material. The fine particle embedding material is solidified.

  According to this method for producing a highly dispersed fine particle-containing material molding, by applying ultrasonic vibration to the liquid fine particle embedding material in which the fine particle material is embedded, the fine particle material is dispersed in the fine particle embedding material without aggregation. .

  In the present invention, liquid and liquid are used as including a softened or molten state.

  In the present invention, the fine particle embedding material means a material in which the fine particle material is embedded and dispersed.

  In the present invention, the processing for putting the fine particle material and the liquid fine particle embedding material into the holder is performed by putting the fine particle material and the powdery fine particle embedding material into the holder and, for example, heating and melting them in the holder. This includes the case where a liquid fine particle embedding material is used.

  In addition, the present invention is directed to a fine particle embedding material that changes from a liquid to a solid, and not a fine particle embedding material that changes from a gas to a solid.

  Further, in the method for producing a highly dispersed fine particle-containing material molded body according to claim 2, the fine particle material and a molten thermomeltable material are put in a holder, and the holder is once heated to a temperature equal to or higher than the melting point of the heat meltable material. While being placed in a medium and applying ultrasonic vibration to the heat-meltable material, the heat-meltable material is gradually cooled together with the medium to solidify the heat-meltable material.

  According to this method for producing a molded article containing highly dispersed fine particles, by applying ultrasonic vibration to a molten thermomeltable material in which the fine particle material is embedded, the fine particle material is dispersed in the heat meltable material without agglomeration. To do. In addition, the holder containing the heat-meltable material is placed in a heated medium once, and the heat-meltable material is gradually cooled together with the medium so that the heat-meltable material is solidified. Rapid cooling in the process is prevented.

  In the present invention, heat meltability means a material that changes from a solid to a liquid when the material is heated to a temperature equal to or higher than the melting point, and changes from a liquid to a solid when the material is gradually cooled to a temperature lower than the melting point. Refers to the nature of

  The apparatus for producing a highly dispersed fine particle-containing material molded body according to claim 3 has a holder for placing the fine particle material and the liquid fine particle embedding material, and an ultrasonic vibrator, and the ultrasonic vibration is applied to the fine particle embedding material. The fine particle embedding material is solidified while applying ultrasonic vibration by the child.

  According to this highly dispersed fine particle-containing material molded body manufacturing apparatus, the fine particle material aggregates in the fine particle embedding material by applying ultrasonic vibration to the liquid fine particle embedding material in which the fine particle material is embedded by an ultrasonic vibrator. Disperse without doing.

  According to a fourth aspect of the present invention, there is provided an apparatus for producing a highly dispersed fine particle-containing material molded body, comprising: a holder for putting the fine particle material and the heat-meltable material; a medium staying in contact with the holder around the holder; And a container for storing the medium, and by applying ultrasonic vibration to the molten heat-meltable material placed in the holder using an ultrasonic vibrator, the heat-meltable material is gradually cooled together with the medium. To solidify.

  According to this highly dispersed fine particle-containing material molded body manufacturing apparatus, by applying ultrasonic vibration to the meltable heat-meltable material in which the fine particle material is embedded by an ultrasonic vibrator, the fine particle material is contained in the heat-meltable material. Disperses without agglomeration. In addition, the holder containing the heat-meltable material is placed in a heated medium once, and the heat-meltable material is gradually cooled together with the medium so that the heat-meltable material is solidified. Rapid cooling in the process is prevented.

  According to the method for producing a highly dispersed fine particle-containing material molded body according to claim 1, the fine particle material is aggregated in the fine particle embedding material by applying ultrasonic vibration to the liquid fine particle embedding material in which the fine particle material is embedded. Can be dispersed without

  Further, according to the method for producing a highly dispersed fine particle-containing material molded product according to claim 2, the ultrasonic vibration is applied to the molten thermomeltable material in which the fine particle material is embedded, whereby the fine particle is contained in the hotmeltable material. The material can be dispersed without agglomeration. In addition, since rapid cooling in the solidification process of the heat-meltable material is prevented, it is possible to manufacture a molded body of a good fine particle-containing material that is free from damage such as cracks due to rapid cooling.

  According to the highly dispersed fine particle-containing material molded body manufacturing apparatus according to claim 3, by applying ultrasonic vibration to the liquid fine particle embedding material in which the fine particle material is embedded by an ultrasonic vibrator, It is possible to produce a molded body of a fine particle-containing material in which the fine particle material is dispersed without agglomeration.

  According to the apparatus for producing a highly dispersed fine particle-containing material molded body according to claim 4, thermal fusion is performed by applying ultrasonic vibration to the molten thermomeltable material in which the fine particle material is embedded by an ultrasonic vibrator. It is possible to produce a molded body of a fine particle-containing material in which the fine particle material is dispersed without being aggregated in the functional material. In addition, since rapid cooling in the solidification process of the heat-meltable material is prevented, it is possible to manufacture a molded body of a good fine particle-containing material that is free from damage such as cracks due to rapid cooling.

  Hereinafter, the configuration of the present invention will be described in detail based on the best mode shown in the drawings.

  In FIG. 1, an example of embodiment of the highly dispersed fine particle containing material molded object manufacturing apparatus of this invention is shown. This highly dispersed fine particle-containing material molded body manufacturing apparatus 1 includes a holder 3 for placing a fine particle material and a liquid fine particle embedding material 2 and an ultrasonic vibrator 4. 4 is used to solidify the fine particle embedding material 2 while applying ultrasonic vibration.

  In the present embodiment, as the fine particle embedding material 2, a heat-meltable material that changes from a liquid to a solid by changing to a liquid in which the fine particles can flow by heating and removing heat is used. Examples of the heat-meltable material used as the fine particle embedding material 2 include carnauba wax, polyethylene, polypropylene, polystyrene, ABS resin, vinyl chloride resin, fluorine resin, and polyester resin.

  Regarding the particle size of the fine particle material and the viscosity of the fine particle embedding material, the particle size is such that the fine particle material is movable and does not settle in a liquid or molten state, taking into consideration the specific gravity difference between the fine particle material and the fine particle embedding material. As well as the viscosity.

  The shape and size of the holder 3 are set according to the compact of the fine particle-containing material to be manufactured. In this embodiment, the holder 3 is composed of a cylindrical main body 3a and a disk-shaped bottom plate 3b, and is formed in a cup shape as a whole.

In the case where a heat-meltable material is used as the fine particle embedding material 2, a good fine particle-containing material having no damage such as cracks can be prevented by preventing rapid cooling in the solidification process of the heat-meltable material in the holder 3. In order to produce a molded body, the holder 3 preferably has a certain heat capacity. Specifically, for example, it is preferable to have a peripheral wall formed of a metal having a heat capacity of ³ J / cm ³ · K or more and having a thickness of about 10% of the inner diameter of the holder 3. When the shape of the holder 3 is, for example, an ellipse or a rectangle, the holder 3 preferably has a longest inner diameter, that is, a peripheral wall having a thickness of 10% or more of the long diameter. In the present embodiment, the main body 3a corresponding to the peripheral wall of the holder 3 is formed of iron having a heat capacity of ³ J / cm ³ · K or more.

  When a heat-meltable material is used as the fine particle embedding material 2, the bottom plate 3 b of the holder 3 is excellent in preventing rapid cooling in the solidification process of the heat-meltable material in the holder 3 and not causing damage such as cracks. From the viewpoint of manufacturing a molded body of a fine particle-containing material, it is desirable that the same material as that of the main body 3a corresponding to the peripheral wall of the holder 3 is used to form at least the same thickness or thicker than the main body 3a. Further, it may be formed thinner than the peripheral wall. Further, when it is necessary to produce a molded body having a smooth surface without scratches, such as an electron microscope observation pellet, the bottom plate 3b is made of a hard and scratch-resistant material or scratches. It is preferable that the material is formed of a material that is easy to understand or a material that allows easy separation of the fine particle embedding material 2. Specifically, for example, the bottom plate 3b is formed of quartz glass that is hard to be scratched, easily understands the presence or absence of scratches, and further facilitates peeling of the fine particle embedding material 2.

  The main body 3a and the bottom plate 3b of the holder 3 are joined so that the molten heat-meltable material 2 in the holder 3 does not leak out, and a solidified molded body of the heat-meltable material 2 is easily taken out. It is joined so that it can be disassembled. Specifically, for example, a high temperature heat resistant tape is wound around and joined to the outside of the joint portion between the main body 3a and the bottom plate 3b.

  In the present embodiment, the highly dispersed fine particle-containing material molded body manufacturing apparatus 1 includes a water tank 6 that houses the holder 3 and a medium 5 that is filled in the water tank 6 that houses the holder 3. The water tank 6 is provided with a supply pipe 9 provided with a valve 9a and supplied with a medium 5, and a discharge pipe 10 provided with a valve 10a and discharged with a medium 5.

  The ultrasonic vibrator 4 only needs to be installed so as to apply ultrasonic vibration to the heat-meltable material 2. In the present embodiment, the ultrasonic transducer 4 is provided at the bottom of the water tank 6 so as to protrude into the water tank 6. In addition, as the ultrasonic transducer | vibrator 4, the transducer | vibrator which can output the vibration of the frequency of about 20kHz-60kHz is used, for example.

  Moreover, in this embodiment, the base 7 which consists of the net-like top plate 7a and the leg 7b provided in the four corners of the top plate 7a and covers the ultrasonic transducer 4 is provided at the bottom of the water tank 6, and on the top plate 7a. Holder 3 is placed.

  With the above configuration, ultrasonic vibration can be applied to the heat-meltable material 2 by the ultrasonic vibrator 4 through the medium 5 filled around the holder 3 in the water tank 6.

  As the medium 5, a fluid that can reach a temperature equal to or higher than the melting point of the heat-meltable material 2 is used. Specifically, for example, water or silicone oil is used.

  In the present embodiment, a heater 8 capable of heating the medium 5 to a temperature equal to or higher than the melting point of the heat-meltable material 2 is provided inside the side wall of the water tank 6.

  With the above-described configuration, the temperature of the heat-meltable material 2 in the holder 3 can be adjusted by adjusting the output of the heater 8 to raise or lower the temperature of the medium 5 filled around the holder 3 in the water tank 6. The melting and solidification of the heat-meltable material 2 can be controlled.

  The operation of the above-described highly dispersed fine particle-containing material molded body manufacturing apparatus 1 will be described below.

  First, a high-temperature heat-resistant tape is wound around the joint between the main body 3a and the bottom plate 3b, and the main body 3a and the bottom plate 3b are joined to form the cup-shaped holder 3.

  A fine particle material and, for example, a flake-like or fine powder-like heat-meltable material 2 are put in the holder 3 and stirred by a stirring rod or the like.

  The valve 10a of the discharge pipe 10 is closed and the valve 9a of the supply pipe 9 is opened to supply the medium 5 into the water tank 6. When the water level of the medium 5 reaches a predetermined water level, the valve 9a is closed and the medium is supplied. The supply of 5 is stopped. Then, the holder 3 is placed on the top plate 7a of the base 7 in the water tank 6 in which the medium 5 is stored.

  Subsequently, the heater 8 is activated and the ultrasonic transducer 4 is activated. As a result, the medium 5 is heated and the heat-meltable material 2 in the holder 3 is heated and melted, and ultrasonic vibration is applied to the heat-meltable material 2 in the holder 3 via the medium 5 to melt the heat-melted material. The fine particle material is dispersed in the conductive material 2 without agglomeration. The output of the heater 8 is adjusted so that the temperature of the medium 5 is equal to or higher than the melting point of the heat-meltable material 2.

  The operation of the heater 8 is stopped after it is confirmed from the opening at the top of the holder 3 that all the heat-meltable material 2 is melted. Thereby, the temperature of the medium 5 is lowered, the holder 3 and the heat-meltable material 2 are gradually cooled, and the heat-meltable material 2 is solidified.

  After observing from the opening in the upper part of the holder 3 and confirming that the entire heat-meltable material 2 is solidified, the operation of the ultrasonic transducer 4 is stopped.

  Subsequently, the holder 3 is removed from the water tank 6. Then, the high-temperature heat-resistant tape wound around the outside of the holder 3 is peeled off, the bottom plate 3b is removed, and the solidified hot-melt material 2 is taken out. Thereby, a molded body of the fine particle-containing material in which the fine particle material is dispersed without agglomeration is obtained.

  In addition, although the above-mentioned form is an example of the suitable form of this invention, it is not limited to this, A various deformation | transformation implementation is possible in the range which does not deviate from the summary of this invention. For example, in the present embodiment, a case has been described in which a particulate material is embedded in a material that changes from a liquid to a solid, dispersed, and solidified to produce a molded body of the particulate-containing material. Also, the present invention can be used when the fine particle material is embedded and dispersed in a liquid material without changing to a solid. In this case, ultrasonic vibration is applied to the liquid during a period in which it is necessary to disperse the particulate material in the liquid without agglomeration.

  In the present embodiment, a heat-meltable material is used as the fine particle embedding material 2, but the present invention is not limited to this, and a thermosetting material that changes from a liquid to a solid by heating may be used. In this case, the thermosetting material and the particulate material in a liquid state are put in the holder 3 and agitated, and the heater 8 is operated while applying the ultrasonic vibration by operating the ultrasonic vibrator 4 and the thermosetting material. By heating and solidifying, a molded body of the fine particle-containing material in which the fine particle material is dispersed without agglomeration can be obtained. In addition, as a thermosetting material used as the fine particle embedding material 2, an epoxy resin, a phenol resin, an unsaturated polyester resin, a urea resin etc. are mentioned, for example.

  Furthermore, as the fine particle embedding material 2, a material that changes from a liquid to a solid by adding a coagulant may be used. In this case, the fine particle embedding material and the fine particle material in a liquid state are put in the holder 3 and agitated, and the ultrasonic vibrator 4 is operated to add the coagulant while applying the ultrasonic vibration to add the fine particle embedding material. By solidifying the particles, a molded body of the fine particle-containing material in which the fine particle material is dispersed without agglomeration can be obtained.

  In the present embodiment, the water tank 6 includes the heater 8 and the medium 5 is heated by the heater 8. However, the present invention is not limited to this, and the water tank 6 does not include the heater 8 and is provided separately. Thus, the medium 5 may be heated. Also in this case, the hot melt material 2 can be heated and melted by supplying the medium 5 heated to a temperature equal to or higher than the melting point of the hot melt material 2 from the supply pipe 9 to the water tank 6. If it is considered necessary to completely melt the heat-meltable material 2, the medium 5 heated to a predetermined temperature is adjusted by adjusting the valve 9a of the supply pipe 9 and the valve 10a of the discharge pipe 10. Is continuously supplied to prevent the temperature of the medium 5 in the water tank 6 from decreasing.

  In this embodiment, the holder 3 containing the particulate material and the solid heat-meltable material 2 is installed in the medium 5 in the water tank 6, and the heat in the holder 3 is heated by the medium 5 heated by the heater 8. Although the meltable material 2 is heated and melted, the present invention is not limited to this, and the heat meltable material 2 may be heated and melted by a separately provided heating device. In this case, the medium 5 is heated to a temperature equal to or higher than the melting point of the heat-meltable material 2 when the holder 3 containing the heat-meltable heat-meltable material 2 is placed in the water tank 6, and ultrasonic vibration is applied. It is necessary to ensure that the hot-melt material 2 does not solidify before it is applied.

  In this embodiment, ultrasonic vibration is applied to the heat-meltable material 2 in the holder 3 through the medium 5, but the ultrasonic vibrator 4 is brought into contact with the holder 3 without through the medium 5. The ultrasonic vibration may be directly applied to the holder 3 by, for example, or the ultrasonic vibration is directly applied to the heat-meltable material 2 by bringing the ultrasonic vibrator 4 into contact with the heat-meltable material 2. You may do it.

  Moreover, in this embodiment, although the water tank 6 is used as a container which accommodates the holder 3 and the medium 5, and water is used as the medium 5, the container and the medium 5 are not restricted to these. Specifically, for example, a container that encloses and holds the holder 3 may be used, and the air in the container may be heated and gradually cooled using the medium 5 as a medium. Also in this case, the heat-meltable material 2 in the holder 3 can be heated and melted by heating the air as the medium 5, and the heat-meltable material 2 is slowly cooled with the air as the medium 5. Rapid cooling during the solidification process is prevented. In this case, for example, the ultrasonic vibrator 4 is brought into contact with the holder 3 so that the ultrasonic vibration is directly applied to the holder 3.

  In this embodiment, the heat-meltable material 2 is heated and ultrasonic vibration is applied to the heat-meltable material 2. However, the present invention is not limited to this, and the heat-meltable material 2 is heated and melted. After that, ultrasonic vibration may be applied to the heat-meltable material 2. In this case, after melting the heat-meltable material 2, ultrasonic vibration is applied to the heat-meltable material 2 for a certain time, and then the operation of the heater 8 is stopped, and the heat-meltable material 2 is gradually cooled and solidified. Note that the time during which ultrasonic vibration is applied to the heat-meltable material 2 after the heat-meltable material 2 is melted is appropriately set according to the amount of the heat-meltable material 2 and the fine particle material to be embedded.

  Further, in this embodiment, the operation of the ultrasonic vibrator 4 is stopped after it is confirmed that the entire heat-meltable material 2 is solidified. However, the present invention is not limited to this. The operation of the ultrasonic vibrator 4 may be stopped when the liquid-phase viscosity of the heat-meltable material 2 becomes high enough to stop the movement of the particulate material in the material 2.

  An example of manufacturing an electron microscope observation pellet using the highly dispersed fine particle-containing material molded body manufacturing apparatus 1 of the present embodiment will be described with reference to FIGS. 4 and 5. In this example, a disk-shaped pellet for electron microscope observation having a diameter of 30 mm and a height of 5 mm was manufactured. A holder 3 having a main body 3a formed in a cylindrical shape with an inner diameter of 30 mm and a thickness of 3 mm and a bottom plate 3b formed in a disk shape with a diameter of 36 mm and a thickness of 3 mm was used.

  In this example, flaky carnauba wax was used as the heat-meltable material 2. Carnauba wax has a melting point of 95 ° C. Moreover, pulverized coal particles having an average particle diameter of about 12 μm were used as the fine particle sample to be analyzed.

  During the heating and melting of the carnauba wax 2 and the vibration treatment of ultrasonic vibration, the temperature of the heater 8 was adjusted to keep the temperature of the medium 5 at 96 ° C. The frequency of the ultrasonic transducer 4 was 40 kHz.

  After confirming that all of the carnauba wax 2 was melted, the operation of the heater 8 was stopped and the carnauba wax 2 was gradually cooled. In this example, the time for heat melting and vibration treatment of the carnauba wax 2 was about 3 minutes, and the time for the slow cooling solidification treatment of the carnauba wax 2 was about 3 minutes.

  After the carnauba wax 2 was slowly cooled and solidified, the molded body of the carnauba wax 2 was taken out from the holder 3 to obtain an electron microscope observation pellet in which a pulverized coal particle sample was embedded.

  An electron micrograph of the observation pellet prepared as described above is shown in FIG. From this photograph, it was confirmed that the aggregation of the fine particles was prevented as compared with the electron micrograph (FIG. 3) of the observation pellet prepared by the conventional method, and the fine particle material was appropriately dispersed. In FIG. 4, reference numeral 20 denotes pulverized coal particles, reference numeral 21 denotes ash particles contained in the pulverized coal particles, and reference numeral 22 denotes exposed ash particles released from the pulverized coal particles.

  Further, when the CCSEM analysis of the observation pellets prepared as described above was performed, the ratio of the exposed ash particles was consistent with the analysis results of the pulverized coal having an average particle size of about 76 μm and about 34 μm (FIG. The average particle size of the pulverized coal particles used in the examples was about 12 μm). From this result, it was confirmed that the aggregation of the fine particles was prevented and the fine particle material was appropriately dispersed.

It is sectional drawing which shows schematic structure of an example of embodiment of the highly dispersed fine particle containing material molded object manufacturing apparatus of this invention. It is a figure which shows the result of the CCSEM analysis using the pellet for observation produced by the conventional method. It is an electron micrograph of the pellet for observation created by the conventional method. It is an electron micrograph of the pellet for observation produced with the highly disperse fine particle content material fabrication object device of the present invention. It is a figure which shows the result of the CCSEM analysis using the pellet for observation created with the highly dispersed fine particle containing material molded object manufacturing apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Highly dispersed fine particle containing material molded object manufacturing apparatus 2 Fine particle embedding material 3 Holder 4 Ultrasonic vibrator 5 Medium 6 Water tank

Claims (4)

  A method for producing a highly dispersed fine particle-containing material molded product, comprising: placing a fine particle material and a liquid fine particle embedding material in a holder; and solidifying the fine particle embedding material while applying ultrasonic vibration to the fine particle embedding material.   A fine particle material and a molten thermomeltable material are put in a holder, and the holder is placed in a medium once heated to a temperature equal to or higher than the melting point of the hotmeltable material to give ultrasonic vibration to the hotmelt material. A method for producing a highly dispersed fine particle-containing material molded body, comprising slowly cooling the heat-meltable material together with the medium to solidify the heat-meltable material.   A holder for placing the fine particle material and the liquid fine particle embedding material, and an ultrasonic vibrator, and solidifying the fine particle embedding material while applying ultrasonic vibration to the fine particle embedding material by the ultrasonic vibrator. An apparatus for producing a molded body of a material containing highly dispersed fine particles.   A holder for storing the particulate material and the heat-meltable material; a medium that stays in contact with the holder around the holder; and a container that includes an ultrasonic vibrator and stores the medium. The heat-meltable material is solidified by gradually cooling the heat-meltable material together with the medium while applying ultrasonic vibration to the heat-meltable material in a molten state by the ultrasonic vibrator. Dispersed fine particle-containing material molded body manufacturing apparatus.