JP2003326148A - Method and apparatus for producing granular material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a granular material by which excellent granulation of a substance fragile to heat can be carried out and the granulation degree or the like can be controlled. <P>SOLUTION: The granular material is obtained by forming a circulating and fluidizing part for a base powder P1, which is a raw material; supplying a binder B to a mixing part 1A, which is a portion of the circulating and fluidizing part, for obtaining a mixture of the base powder P1 and the binder B, and leading the obtained mixture to an energy beam irradiation part 1B where energy beam for curing the binder is irradiated. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a granulated product in which a base powder is granulated using a binder.

[0002]

2. Description of the Related Art As a technique for granulating a base powder using a binder, a circulating flow part of the base powder is formed inside, and a binder is supplied into this circulating flow part, which is used during the circulating flow process. The technique of granulating can be mentioned. When this type of granulation method is adopted, the base powder is supplied to the mixing space in the granulator body, which can be regarded as a mixer, and the circulation flow part is formed to form a uniform flow. Spray the binder into the layer.

A heating mechanism is provided in the outer peripheral portion of the granulator main body, and the binder is dried and hardened by the heat applied from the heating mechanism to obtain a granulated product using the base powder as a starting material. it can.

In this type of granulation operation, PVA, resin, cellulose, starch, dextrin, sugar and the like are used as a binder, and these are dissolved or diluted in a dispersion medium such as water or a solvent. It is distributed and used. As another method, there is a method in which the binder powder and the base powder raw material are mixed and then mixed by adding water or the like, thereby subjecting this to treatment. Therefore, in order for the binder to exert its adhesive ability, it is necessary to cure it by heating and drying.

[0005]

The above granulation method has various problems as described below. 1. Difficult to adapt to low heat substances. When the base powder is a substance that is easily modified by heat, it is affected by the granulation process, and it may be difficult to maintain the product quality in practice, and thus granulation cannot be performed. 2. The curing (bonding) timing control is practically impossible, and the control selection range is very small. With the drying of the dispersion medium due to the heat treatment, the binder hardens and the prescribed hardening for granulation becomes possible, but the environment in which the heating field is kept in the prescribed temperature range and the dispersion medium is constantly dried. In (circulating fluidized bed, etc.), the curing of the binder cannot be substantially stopped, and there is almost no control range. The reason for this is that the temperature control requires a relatively long time lag.

3. The amount of dispersion medium used becomes relatively large. A certain amount of dispersion medium is required due to the viscosity and supply amount of the binder, limitation of solubility, and other reasons, but when water or the like is used as the dispersion medium, the amount is relatively large. 4. The processing time is relatively long. It takes a relatively long time to achieve binder curing by heating, and as described above, it is necessary to supply a relatively large amount of binder solution, so it takes time to dry the dispersion medium, and as a result, it is necessary to process as a whole. Time will increase.

An object of the present invention is to solve the above-mentioned various problems, and in particular, it is possible to satisfactorily granulate a weakly heat-resistant substance and to easily control the degree of granulation and the like. It is to obtain a method and an apparatus for producing a granulated product capable of producing.

[0008]

In order to achieve this object, the characteristic means of the method for producing a granulated product, in which the binder according to the present invention is used to granulate a base powder, is set forth in claim 1. Thus, a mixing step of forming a circulating flow part of the base powder and supplying the binder to a mixing part which is a partial region of the circulating flow part to obtain a mixture of the base powder and the binder, A curing step of introducing the mixture obtained in the mixing step to an energy ray irradiation unit irradiated with an energy ray having a binder curability and curing the binder to obtain the granulated material is performed.

When the manufacturing method of the present application is adopted, a mixture in which the base powder and the binder are uniformly mixed is produced in the mixing section which is a partial region of the circulation section in which the powder circulates and flows. This mixture is in a state in which the base powder is bound by the binder. This mixture is guided to the energy beam irradiation unit located above the mixing unit. This part is irradiated with high energy rays such as ultraviolet rays, and the binder is hardened. Therefore, it becomes possible to obtain the base powder fixed by the binder, and it is possible to obtain the granulated product.

Here, when the energy ray is used for curing the binder, it does not use heat, so that it does not cause any problem in adapting to the weakly heat-resistant substance.

Further, the curing state of the binder can be controlled by adjusting the irradiation time of the energy rays, the irradiation intensity, etc.
Irradiation control can be performed also in relation to the progress state of granulation, and as a result, it is possible to favorably control in the manufacturing process for obtaining a desired product. Since it is not necessary to pay attention to the degree of drying as in the case of utilizing heat, as a result, a granulated product having predetermined physical properties can be easily obtained. Further, since the efficient curing occurs, the time required can be reduced.

Further, when comparing the curing of the binder accompanied by the irradiation of energy rays with the curing of the binder by heating,
Since the required amount of the binder itself becomes low, as a result, it was possible to shorten the manufacturing time also from this point.

In the above characteristic means, as described in claim 2, it is preferable that the energy rays are ultraviolet rays and an ultraviolet curable material is used as the binder.

When an ultraviolet curable material is used as the binder, the irradiation means for achieving this curing is as follows.
Although an ultraviolet lamp or the like will be adopted, in this case, a manufacturing method capable of obtaining the above-described actions and effects can be easily realized by using readily available equipment and materials.

The characteristic structure of the granulated product manufacturing apparatus for granulating the base powder by using the binder is as follows. A granulator main body for forming and producing the granulated product is provided, and a lower region in the granulator main body serves as a mixing part for supplying the binder and mixing with the base powder to cure the binder. An energy ray irradiator having an energy ray irradiator for irradiating an energy ray is provided in the upper region of the granulator main body, and the mixture produced in the mixer is guided to the energy ray irradiator by circulating flow, and the binder Is cured to obtain a granulated product.

In this apparatus, the circulating flow part of the base powder is formed over the mixing part and the energy ray irradiation part in the main body of the granulator. Then, a mixing step of mixing the base powder and the binder described in the manufacturing method is executed in the mixing section, and a curing step of curing the binder is executed in the energy ray irradiation section. Granulation is achieved sequentially in a circulating flow process. As a result, a desired granulated product can be obtained. In this device, both steps can be sequentially executed in each region of the circulation flow, and the number of circulations (that is, processing time etc.)
The degree of granulation can be adjusted by adjusting.

In the above apparatus structure, as described in claim 4, the granulating machine main body is provided with a supplying means for supplying the base powder and the binder to a lower region of the granulating machine main body. It is preferable that the cross-sectional area of the lower region in the machine body is set equal to or smaller than the minimum cross-sectional area of the upper region.

In the mixing section, the base powder and the binder are uniformly and sufficiently mixed, and in the energy irradiation section, the energy rays are uniformly and evenly applied to the binder existing on the outer periphery of the base powder. However, it is preferable that the former is smaller or equal to the minimum sectional area of the latter than the latter, so that the above preferable situation can be realized. Particularly in the energy irradiation part, it is easy to ensure uniform energy irradiation by increasing the cross-sectional area.

Further, as described in claim 5, as the mixing means for performing the mixing in the lower region of the granulator main body, an air flow type mixing means for mixing by an air flow or a machine for mechanical mixing It is preferable to provide a formula mixing means, or both.

By providing an air flow type or mechanical type mixing means for forming the mixed flow, it is possible to surely realize the mixing required by the present application. These mixing means induce the powder flow in the granulator main body, so that the circulation flow is also formed in the closed space.

Similarly, as described in claim 6, the upper region of the granulator main body is arranged in a vertical direction in the longitudinal direction, and has a cylindrical shape with a cross-sectional area gradually increasing upward. It is preferable that the gas supply unit is formed and a gas supply unit is arranged at the bottom of the granulator main body, and a gas discharge unit is provided at the top of the granulator main body.

When the circulating flow is formed in the vertical up and down direction based on the gas flow, the energy beam irradiation portion is made to have an upwardly widened structure, so that the energy beam irradiation can be performed uniformly and reliably on the upper side, and further the energy beam irradiation can be performed. It is possible to suppress the upward movement of the mixed powder in the vicinity of the top of the irradiation part and form a good circulating flow.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION An example of an embodiment of an apparatus for producing a granulated product according to the present invention will be described with reference to the drawings. The manufacturing apparatus uses the base powder as a starting material and a binder to manufacture the granulated product. In the embodiment,
An example of obtaining a granulated product by fixing the surface coating material to the surface of the base powder using a binder will be described.

The granulated product is formed by coating the surface of a base powder (eg powder resin) P1 with a surface coating material (eg aluminum flakes) P2, as shown schematically in FIG. The binder B fixes the surface coating material P2 to the base powder P1. Illustratively, the base powder P1 is a resin having a particle diameter centered at 35 μm, and the surface coating material P2 is a scaly powder obtained by crushing aluminum and having a nominal particle diameter of about 18 μm.

The production apparatus is constructed so as to continuously produce the granulated product. As shown in FIG. 1, the apparatus is configured by vertically mixing a mixing section 1A corresponding to the lower region of the granulator main body 1 and an energy ray irradiation unit 1B corresponding to the upper region, The mixing section 1A is used for stirring and mixing the raw materials, and the energy ray irradiating section 1B serves to solidify the binder. The target granule S is the main body 1
It is generated in the process of flowing and circulating inside.

In this apparatus, as shown in FIGS. 1 and 2, mixed powder (base powder P1, surface coating material P2, and binder B are mixed over the mixing portion 1A and the energy ray irradiation portion 1B. 2) is formed in the powder circulation space 3 provided in the granulator main body 1. As shown in FIGS. 1 and 2, an ultraviolet ray irradiating means 8 for irradiating the mixed powder with ultraviolet rays as energy rays is provided on the side of the energy ray irradiating section 1B.
Is provided, and in the energy beam irradiation unit 1B,
The binder B is solidified, and the surface coating material P2 is secured.

As shown in FIGS. 1 and 2, the lower region of the granulator main body 1, which is the mixing section 1A, is formed into a simple cylinder, and a ventilation plate 2 is provided near the lower end thereof. result,
By forming a relatively dense mixed powder phase in this portion, uniform stirring and mixing can be performed in a relatively short time.

As shown in FIGS. 1 and 2, the upper region of the granulator main body 1, which is the energy beam irradiation unit 1B, has its longitudinal direction set vertically and vertically, and its cross-sectional area gradually increases upward. It is formed in a tubular shape. As a result, a circulating flow effective for granulation can be mainly formed at this portion 1B.

A plurality of bag filters F are provided on the top surface of the energy irradiation unit 1B, and the gas inside the granulator main body 1 can be discharged through the bag filters F. Further, in order to recirculate the base powder adhering to the filter F during granulation, a backwashing means F1 for supplying compressed air for backwashing is provided.

The vertical circulation flow structure of the mixed powder formed in the powder circulation space 3 of the granulator body 1 will be described in more detail below.

As the supply means 4 for supplying each starting material of the mixed powder to be processed in the powder circulation space 3 to the powder circulation space 3, the base powder supply means 4A for supplying the base powder P1 and the surface coating material. The surface coating material supplying means 4B for supplying P2 is provided, and the binder supplying means 4 for supplying the binder B is provided.
C is provided. Furthermore, a discharging means 5 for discharging the generated granulated product S to the outside of the apparatus is provided.

The base powder supplying means 4A and the surface coating material supplying means 4B are screw type constant quantity supplying mechanisms for charging each charging material into the main body. The binder supply unit 4C is configured to be capable of spraying a liquid ultraviolet curable material onto the mixing unit 1A with spray air. The means 4C includes a spray nozzle 41 provided in the mixing section 1A and an air passage 4 connected to the nozzle base end side.
2 and an introduction pipe 43 for guiding the binder to the spray tip, and a pump P for transportation is provided at a predetermined portion of the introduction pipe 43. The above supply means 4A,
By including 4B and 4C, the starting material can be satisfactorily charged into the mixing section 1A.

Next, the fluidizing means 6 for forming a circulating flow will be described. The fluidizing means 6 is a base powder P.
1. A fluidizing gas aeration means 6A for aerating the fluidizing airflow for fluidizing the surface coating material P2 and the binder B upward from the ventilation plate 2 (which serves as a gas supply portion) provided in the lower portion of the apparatus, The gas discharge part 7b is provided. By providing the means 6A, the mixed powder is floated and raised in the powder circulation space 3 as the fluidizing airflow rises, and as shown in FIG. It is possible to lower the powder circulating space 3 from above and to circulate and flow.

The behavior of the powder in the upper region of the granulator main body 1 will be described. In this upper region, the flow velocity of the fluidizing airflow gradually decreases from the lower side to the upper side as the cross-section expands.
The powder reaching the upper part of the powder circulation space 3 stalls and descends along the outer peripheral wall 1c of the granulator main body 1, and as a result, a vertical circulation flow is formed.

Further, in the present application, the binder B is introduced into the main body 1 in a gas-conveying state, and the gas discharge portion 7b is arranged on the top portion 1b of the granulator main body 1 so that the powder circulating space 3 is provided. Exhaust a part of the gas. However, regarding the circulation flow described above, the discharge flow rate is such that it does not disturb the circulation flow. As a result, in the powder circulation space 3, the mixed powder rises in the floating state in the central portion side, stalls in the upper end portion thereof, and falls in the peripheral portion against the upward flow of the fluidized gas. On the other hand, the generated granulated product S can be appropriately taken out from the product discharge port 7 constituting the discharging means 5.

A rectangular irradiation window 9 is formed on the outer peripheral wall 1c of the granulator main body 1 formed in a conical shape in order to irradiate ultraviolet rays from the upper side of the upper part of the powder circulation space which is the energy beam irradiation section 1B. The mercury lamp housing 8a, which forms the ultraviolet irradiation means 8, is attached to the outside of the irradiation window 9 formed with the longitudinal direction facing up and down.

A pair of irradiation windows 9 are formed so as to face each other as shown in the drawing, and a pair of mercury lamp housings 8a are also formed.
To place. In the mercury lamp housing 8a, a high-pressure mercury lamp whose fluorescent tube is not coated on the inner surface of the discharge tube is arranged, and the ultraviolet ray irradiation means 8 is configured to efficiently irradiate the ultraviolet ray having the peak wavelength of 365 nm. Irradiation window 9
Is a rectangular opening formed on the outer peripheral wall 1c of the granulator main body 1, and maintains the airtightness between the outside by the glass hermetically held on the front surface of the mercury lamp housing 8a and the fixture of the mercury lamp housing 8a. I am doing it.

In the granulator main body 1 configured as above, the base powder P1 supplied from the base powder supply means 4A.
And the surface coating material P supplied from the surface coating material supply means 4B.
2 and the binder B supplied from the binder supply means 4C
And are transported in the central part of the granulator main body by the fluidizing airflow and float, and are sent out to the peripheral portion from the fluidizing airflow that is decelerated at the upper part of the powder circulation space 3, and rise in the peripheral portion at a relatively low speed. It descends along the outer peripheral wall 1c against the upward flow. During this time,
The three are suitably mixed (specifically, sprinkled) in the mixing section 1A, and further, in the energy beam irradiation section 1B, the powder circulation space 3 is passed through the irradiation window 9 by the ultraviolet irradiation means 8.
The surface is exposed to the ultraviolet rays that are emitted inside. As a result, when the binder B is solidified, the surface coating material P2 is attached to the surface of the base powder P1 and the granulated product S can be generated.

The irradiation window 9 has a mercury lamp housing 8a.
Since the mixed powder tends to drop and adhere to the surface of the glass held on the front surface of the glass on the side of the powder circulation space 3, for example, as shown in FIG. It is desirable to provide a window stain prevention gas supply unit 16 that supplies the window stain prevention gas from below.

It is desirable that the window fouling prevention gas has the same component as the gas for forming the fluidized airflow flowing in the powder circulation space 3. The flow rate of the window dirt prevention gas along the glass is adjusted appropriately. If this flow velocity is too low, the irradiation window 9
It is not preferable that the mixed powder falling from above into the open space is fed back into the powder circulation space 3 and the mixed powder adheres to the surface of the glass. Further, if the flow velocity of the window stain preventing gas is too high, it will form a flow from the irradiation window 9 toward the powder circulation space 3, which is a factor of disturbing the fluidizing air flow, which is not preferable.

[Other Embodiments] Other embodiments of the method and apparatus for producing a granulated product according to the present invention, which are not shown in the above embodiment, will be described below.

<1> In the above embodiment, the base powder P1 serving as the supply means 4 of the powder to be processed in the powder circulation space 3 is supplied to the granulator main body 1. Body supply means 4A, surface coating material supply means 4 for supplying surface coating material P2
B and the binder supply means 4C for supplying the binder B are provided, and the discharge means 5 for appropriately discharging the granulated product S is described as an example. However, the granulator main body 1 is configured in a batch type, and the granulator main body 1 is opened at the top. May be provided so that the starting material can be supplied into the powder circulation space 3, and after finishing the batch processing, the granulated product S may be discharged by an arbitrary method (for example, discharged from the top opening).

<2> In the above embodiment, the granulator main body 1 has the powder circulating space 3 so that the mixed powder is vertically circulated in the powder circulating space 3. Although the fluidizing means 6 thus constructed is provided, and the fluidizing means 6 and the binder supplying means 4C are separate,
The fluidizing means 6 may be capable of spraying the binder B.

On the other hand, a so-called stirring / mixing machine may be adopted as a basic structure of mixing which fulfills the stirring / mixing function of the apparatus. That is, the structure of the stirring mixer shown in FIG. 3 can be adopted. In this example, the raw materials P1 and P2 can be charged through a predetermined portion of the lid body 20, and the granulator main body 1
The binder B is spray-supplied by the binder supply means 4C provided on the intermediate side portion of the granule main body 1, and the rotating screw 6B pushes the mixed powder upward along the outer peripheral wall 1c having the inverted conical shape. Drop it downwards and let it circulate vertically.
In this granulator main body 1, as shown in the figure, the lid 20 may be provided with an ultraviolet irradiation means 8 capable of irradiating ultraviolet rays toward the inside. The structure of the high-pressure mercury lamp used for the ultraviolet irradiation means 8 is the same as that described in the above embodiment. Furthermore, by providing a hot water jacket G on the side of the granulator main body 1 and supplying hot water to this jacket G, it is possible to assist the drying and solidification of the binder B. The generated granulated product S is taken out from the lower part of the device. In this example,
The lower part of the granulator body is the mixing part, and the upper part is the energy beam irradiation part.

<3> In addition to the above, for example, as shown in FIG. 4, granulation is performed in a stirring mixer having a paddle 6C that rotates along an outer peripheral wall 1c having an inverted conical shape and scrapes powder upward. The binder B may be supplied from the lower side portion of the machine body 1, the gas may be ventilated toward the lid 20, and the gas may be exhausted from the lid 20. In this case, the lid 20 serves as a raw material supply port.
The discharge opening of the discharge means 5 provided in the above is used, and discharge of the granulated material is performed from the lower part of the apparatus. An ultraviolet irradiation means 8 capable of irradiating ultraviolet rays into the powder circulation space 3 is provided on the upper side portion of the main body 1. Also in this structure, the lower area of the granulator main body serves as the mixing section and the upper area serves as the energy ray irradiation section.

<4> Further, for example, as shown in FIG.
The binder supply means 4C and the ultraviolet irradiation means 8 are provided in the mixer provided with the ribbon-shaped mixing blade 6D that rotates around the horizontal axis in the granulator main body 1 including the horizontally long mixing tank. You may comprise a manufacturing apparatus. In this case, the gas discharge part 50 of the gas from the binder supply means 4C is provided in the lid 20 of the granulator main body 1, and the binder is sprayed on the side part of the granulator main body 1 which is the mixing tank. The spray nozzle 41 may be provided. The ultraviolet irradiation means 8 may be arranged on the lid 20 so as to irradiate the powder circulation space 3 inside the granulator main body 1. The mixing blade 6D has a double structure of an inner side and an outer side, and their twisting directions are opposite to each other. result,
Forces from both sides act on the mixed powder charged inside the mixing tank in the direction of the rotation axis by the mixing blade 6D, and the mixed powder is lifted while being pressed against each other in the upward flow of gas. Repeat the vertical circulation flow of falling. Therefore, also in this structure, the lower region of the granulator main body serves as the mixing portion, and the upper region serves as the energy ray irradiation portion.

<6> In the embodiments described so far, an example in which the base powder P1 and the surface coating material P2 are different has been shown, but the gist of the present application is to include the binder B. When the granulating operation is performed, the solidification of the binder (adhesion when viewed from the raw material side) is performed by using energy rays. Therefore, the base powder P1 and the surface coating material P are used.
It does not matter whether 2 and 1 are the same material or different materials. Furthermore, selection of the particle size is also arbitrary.

<7> In the above embodiment, an example of using ultraviolet rays as the energy rays has been shown, but if the binder can be solidified by electron beams, radiation, X-rays, etc., the energy used in the present application can be obtained. Can be used as a line. On the other hand, as for the binder, any binder such as acrylic, polyester, or epoxy can be used in the present invention as long as it solidifies with these energy rays.

[0049]

EXAMPLE An example in which aluminum flakes are fixed to the surface of a so-called weak heat resin and a granulation operation is performed will be described below. The apparatus described in the above embodiment was used as the apparatus for manufacturing the granulated product. 1. Raw material-related quantities, 2. Binder conditions, 3. Device operating conditions, 4. Itemize in order of product properties. Here, D ₅₀ refers to the particle size at which the size under the sieve becomes 50%.

1. Raw material-related quantities Charge amount Resin powder P1 1000g Aluminum flake addition amount P2 60g Resin powder particle size D ₅₀ = 34.9 μm Aluminum flake particle size D ₅₀ = 17.9 μm Mixed product particle size D ₅₀ = 28.4 μm

2. Binder conditions Binder B UV curable adhesive 3042 manufactured by ThreeBond Co., Ltd. 3042 10 g (used by diluting with ethanol to 30 g) 3. Equipment operating conditions Fluidized air amount 0.6m ³ / min Air supply temperature 45 ° C Bed temperature (corresponding to product temperature) 33 ° C Binder supply time 10 minutes Drying time 10 minutes Total processing time 20 minutes

[0052]

A comparative example with respect to the above embodiment will be shown below.
The description format is based on the above description mode, and only different portions are shown. The raw material-related conditions are the same, mainly
The type of binder is different, and the operating time and processing temperature of the device are different.

[0054] 2. Binder condition       Binder Sumitomo Seika PEO1Z (polyethylene oxide)                   1.5g (used by dissolving in 100g of water)

[0055]

[0056] Further, an electron micrograph of the obtained product is shown in FIG. 8 and that of the starting material is shown in FIG. The granulation was performed well without being affected by heat at the time of generation, and the time required for the granulation was shortened. Furthermore, by controlling the irradiation time of the energy rays, the degree of curing could be adjusted according to the degree of granulation.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view for explaining a configuration showing an example of a manufacturing apparatus according to the present invention.

FIG. 2 is a longitudinal sectional view of a main part of the manufacturing apparatus shown in FIG.

FIG. 3 is a vertical cross-sectional view for explaining a configuration showing another example of the manufacturing apparatus according to the present invention.

FIG. 4 is a vertical cross-sectional view for explaining a configuration showing another example of the manufacturing apparatus according to the present invention.

FIG. 5 is a vertical cross-sectional view for explaining a configuration showing another example of the manufacturing apparatus according to the present invention.

FIG. 6 is a schematic diagram of a granulated product configuration.

FIG. 7 is an electron micrograph showing the appearance of raw materials used.

FIG. 8 is an electron micrograph showing the appearance of the product according to the present application.

[Explanation of symbols]

1 Granulator body 4 supply means 4A Base powder supply means 4B Surface coating material supplying means 4C binder supply means 5 discharge means 6 fluidization means 8 UV irradiation means P1 base powder P2 surface coating material B binder S granulated product

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B01J 2/16 B01J 2/16 F term (reference) 4G004 FA03 FA05 KA01 NA05 4G036 AC12 AC17 4G078 AA04 BA03 BA05 CA01 DA01 DA09 EA20

Claims (6)

[Claims] 1. A method for producing a granulated product, wherein a base powder is granulated using a binder, which forms a circulating flow part of the base powder and is a partial region of the circulating flow part. Supplying the binder to the mixing unit, a mixing step of obtaining a mixture of the base powder and the binder, and the mixture obtained in the mixing step are guided to an energy beam irradiation unit where an energy beam having a binder curability is irradiated. And a curing step of curing the binder to obtain the granulated product. 2. The method for producing a granulated product according to claim 1, wherein the energy rays are ultraviolet rays and an ultraviolet curable material is used as the binder. 3. A granulated material manufacturing apparatus for granulating a base powder using a binder, wherein a circulating flow part of the base powder is formed inside to produce the granulated material. A granulator main body is provided, and a lower region in the granulator main body is a mixing unit that supplies the binder and mixes with the base powder, and includes an energy ray irradiation unit that radiates an energy ray that cures the binder. An upper part of the granulator main body is provided with an energy beam irradiation part, and the mixture produced in the mixing part is guided to the energy beam irradiation part by circulating flow, and the binder is cured to obtain a granulated product. Equipment for manufacturing things. 4. A supply means for supplying the base powder and the binder is provided in a lower area of the granulator main body,
The granulated product manufacturing apparatus according to claim 3, wherein the cross-sectional area of the lower region in the main body of the granulator is set to be equal to or smaller than the minimum cross-sectional area of the upper region. 5. An air flow type mixing means for performing mixing by an air flow or a mechanical type mixing means for performing mechanical mixing as the mixing means for performing the mixing in the lower region in the granulator main body,
Or the granulated material manufacturing apparatus of Claim 3 or 4 provided with both of them. 6. The upper region in the granulator main body is arranged in the vertical direction in the longitudinal direction and is formed into a cylindrical shape with a cross-sectional area gradually increasing upward, and is formed in the bottom of the granulator main body. The apparatus for manufacturing a granulated product according to claim 3 or 4, wherein a gas supply unit is arranged and a gas discharge unit is provided at the top of the granulator main body.