JP2017176914A - Collision crushing method and collision crushing system using the collision crushing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a collision crushing method and a collision crushing system capable of performing superior crushing even when a crushing object is a granular body having a comparatively small size and further reducing energy required for crushing.SOLUTION: When a jet flow j is jetted toward a target 120b from a jet nozzle 10a and a granular crushing object X introduced to a target 10b accompanying the jet flow j collides with the target 10b and is crushed, the collision crushing method executes: a preliminary step forming a crushing object-bonded granular material Cx by bonding the crushing object X on the surface of a granular body C having a larger mass than the crushing object X; and a crushing step introducing the crushing object-bonded granular material Cx formed in the preliminary step to the target 10b accompanying the jet flow j from the jet nozzle 10a and colliding with the target 10b.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a collision pulverization method in which a jet is jetted from a jetting portion toward a target, and a powdery pulverized object guided to the target is caused to collide with the target and pulverize with the target, and the collision pulverization The present invention relates to a collision pulverization system using the method and a spare machine for the collision pulverization system that can also be used in the collision pulverization system.

  As a conventional example of such a collision pulverization method, compressed air is injected as a raw material conveying gas from an injection nozzle to an acceleration tube, and the raw material (corresponding to an object to be pulverized) is sucked by the compressed air injected into the acceleration tube. Is caused to flow in a state accompanied with compressed air and collide with a collision part (corresponding to a target) inside the pulverization chamber (Patent Document 1).

  As another conventional example of the collision pulverization method, nitrogen gas is injected as a raw material carrier gas from an injection nozzle provided at the bottom of the pulverization chamber and supplied to the bottom of the pulverization chamber (corresponding to a pulverization target) Is drawn to the flow of nitrogen gas injected from the injection nozzle, and the raw material is caused to flow in a state accompanying the nitrogen gas and collide with a collision part (corresponding to the target) inside the grinding chamber. (Patent Document 2 (paragraph [0077], FIG. 3)).

  Furthermore, as a resin fine collision pulverization method capable of effectively removing heat generated by pulverization and producing a finer powder, a coarse particle powder resin (corresponding to an object to be pulverized) is injected into the atmosphere in which liquid carbon dioxide is injected. A technique has also been proposed in which a resin is mixed with solidified dry ice, and the mixture is pulverized to pulverize the resin (Patent Document 3).

JP-A-10-296115 Japanese Patent Laid-Open No. 2001-314776 JP-A-7-313896

  However, although the inventions described in the above-mentioned Patent Documents 1 and 2 can use a strong jet, the object to be pulverized is caused to collide with the target in association with the jet (which is the object to be pulverized) and pulverized. It was found that the following problems were inherent because they were (micronized).

  That is, when the object to be crushed is relatively large, as shown in FIG. 3 (c), the object to be crushed can be easily collided with the target for pulverization. Collision opportunities are lost. As in the situation shown in FIG. 3 (b), the small pulverized object X has a small momentum, so it is pushed back into the pulverized object conveying flow spreading around the periphery of the target 10b, and cannot reach the target 10b. It becomes difficult to be done.

  On the other hand, the technique disclosed in Patent Document 3 simply uses dry ice for the purpose of cooling, so that sufficient collision performance cannot be obtained and there is a limit to pulverization.

  Therefore, in such a state, there is a limit on the particle size in the pulverization of the object to be pulverized, and it is necessary to continue the pulverization operation for a long time, and there is room for improvement in terms of energy cost.

  In view of this situation, the main problem of the present invention is that the collision pulverization method can perform good pulverization even when the object to be pulverized is a relatively small granular material, and can further reduce the energy required for pulverization. And to obtain a collision grinding system.

  The present invention relates to a collision pulverization method, a collision pulverization system using the collision pulverization method, and a collision pulverization system spare machine that can be used as a spare machine in such a collision pulverization system. In the description, a collision pulverization method and a collision pulverization system using the method will be described first, and then a preliminary machine for the collision pulverization system will be described.

The first characteristic configuration of the collision crushing method of the present invention is:
A collision pulverization method in which a jet is jetted from a jetting portion toward a target, and a granular pulverized object guided to the target is caused to collide with the target and pulverize with the target,
A preparatory step of attaching the pulverized object to the surface of the granular material having a mass larger than that of the pulverized object to generate a pulverized object-attached granular material;
The pulverization target object-adhered granular material generated in the preliminary step is caused to follow the jet flow from the ejection part to the target and perform a pulverization step of causing the target to collide with the target.

In this configuration, in the preliminary step, the object to be crushed is attached to the surface of the particle having a mass larger than that of the object to be ground to prepare the object to be ground to be ground.
Here, the large mass means that 0.03 ≧ m / M ≧ 0.00001, where m is the mass of the object to be crushed per grain and M is the mass of the granular material.
The crushed object-attached granular material prepared in this way has a large mass as a whole, and the pulverized object is attached and exposed on the surface thereof. This state is the state shown in FIG.

  Therefore, in the pulverization step, the pulverized object-adhered granular material can obtain a large momentum in a state accompanying the jet and can collide with the target. As a result, it is possible to efficiently pulverize the object to be crushed, which is relatively difficult to reach the target and pulverize by itself.

The first characteristic configuration of the collision crushing system of the present invention is:
A collision pulverization system that injects a jet flow from a jetting portion toward a target and collides with the target a powdery pulverized object guided to the target in association with the jet flow,
A pre-processing unit for attaching the pulverized object to the surface of the granular material having a mass larger than that of the pulverized object to generate a pulverized object-attached granular material;
The pulverization target object-adhered granular material generated by the preliminary processing unit is guided from the ejection unit to the target along with the jet flow, and further includes a pulverization processing unit that collides with the target.

  According to this configuration, the preliminary process described above is performed in the preliminary processing unit, and the pulverization process is performed in the pulverization processing unit, so that the pulverization target is also a relatively fine granular material. A pulverization processing system capable of performing pulverization and further suppressing energy required for pulverization could be obtained.

The second characteristic configuration according to the pulverization method of the present invention is:
In the preliminary process,
An adhesion preliminary step of attaching the object to be crushed to the surface of the granular material;
It exists in the point including the cooling preliminary | backup process which cools the grinding | pulverization target object adhesion granular material obtained through the said adhesion preliminary | backup process to the temperature below the solidification point of a granular material constituent material.

According to this configuration, the object to be crushed is attached to the surface of the granular material in the adhesion preliminary step, but the adhesion state of the object to be crushed on the surface of the granular material may not be so strong.
For example, when the object to be crushed is made to collide with the surface of the granular material and adhered, there arises a problem that the surface of the granular material is softened and a strong adhesion state is not obtained.
Therefore, in this configuration, the cooling preliminary step is executed after the adhesion preliminary step, and the temperature is cooled to a temperature lower than the solidification point of the granular material constituting material. By doing in this way, it is possible to obtain a pulverized object-attached granular material in which the pulverized object is firmly fixed to the surface of the granular material constituting material, and to reliably cause a collision with the target, Grinding can be performed efficiently and satisfactorily.

The third characteristic configuration according to the collision crushing method of the present invention is:
In the preliminary step, the surface of the granular material is dissolved to attach the object to be crushed to the surface.

  By adopting this configuration, the object to be pulverized can surely enter the surface of the dissolved granule, and the process can proceed to the pulverization process in the pulverization step.

And the 4th characteristic structure which concerns on the collision crushing method of this invention is the following.
In the preliminary step, the surface of the granular material is heated and dissolved, and the object to be crushed is attached to the surface of the granular material in the dissolved state.

  By adopting this configuration, the surface of the granule is dissolved by heating, so that the surface of the object to be ground is dissolved by a relatively simple method, and the object to be ground is reliably infiltrated into the surface. The pulverization process in the pulverization process can proceed.

  In the description so far, the substance constituting the granular material has not been particularly described, but the substance can be a sublimable substance.

The fifth characteristic configuration of the collision crushing method of the present invention is:
The granular material is a sublimable substance having sublimability,
Under the physical condition environment where the sublimable substance sublimates,
The sublimable substance is sublimated, and the sublimable substance is sublimated from the pulverized product obtained through the pulverization step to obtain the pulverized object to be pulverized.

When the collision pulverization method of the present invention is adopted, the pulverized product obtained through the preliminary process and the pulverization process becomes the pulverized product of the pulverized object-attached granular material. Therefore, when trying to obtain a single object to be pulverized, it is necessary to separate from the constituent material of the granular material, but by using a sublimable material as this granular material, the phase of the material is changed from a solid phase to a gas phase. (Sublimation) does not cause problems such as aggregation and coarsening of the pulverized and refined pulverized object as in the operation through the liquid phase (wet operation).
Therefore, it is possible to pulverize the object to be crushed, which has been considered difficult to be pulverized, and to take out the pulverized object to be pulverized in a desired pulverized state (miniaturized state).

The sixth characteristic configuration of the collision crushing method of the present invention is:
The sublimable substance is water or carbon dioxide.

According to this configuration,
When water is employed as the sublimable substance, ice can be used for the pulverization of the present invention because the granular material is ice so that it is inexpensive and easily available. The hardness of the granular material is also relatively high. In addition, when the post-process is executed, it is not necessary to set the sublimation condition from the normal temperature / normal pressure condition to the excessively low temperature / high pressure condition, and the present method can be implemented with relatively simple equipment and the system can be constructed.

When carbon dioxide is employed as the sublimable substance, the granular material is dry ice, and readily available dry ice can be used for the pulverization of the present invention.
In this example as well, it is not necessary to set the sublimation conditions in the post-process or in the sublimation conditions from room temperature / normal pressure to excessively low / high pressure conditions, and this method can be implemented with relatively simple equipment. Can be built.

  The description so far has been the description of the collision pulverization method and the collision pulverization system. Hereinafter, the preliminary machine for the collision pulverization system according to the present invention will be described.

The first characteristic configuration of the spare machine for the collision crushing system of the present invention is:
A granular object to be crushed is brought into contact with or collided with a surface of a sublimable granular material made of a sublimable substance to obtain a pulverized object adhered granular material in which the pulverized object adheres to the surface of the sublimable granular material. An adhesion pretreatment section;
And a cooling pretreatment unit that cools the pulverized object adhering granular material obtained in the adhesion pretreatment unit to a temperature lower than the sublimation point of the sublimable substance.

  In the collision pulverization system of the present invention, it is necessary to prepare the pulverized object-attached granular material in the pulverization processing unit, and it is preferable that the adhesion state is strong. After performing the adhesion preliminary, the cooling preliminary processing unit executes the cooling preliminary, and cools to a temperature lower than the solidification point that is the sublimation point of the granular material constituting material. By doing in this way, it is possible to obtain a pulverized object-attached granular material in which the pulverized object is firmly fixed to the granular material constituting material, and to reliably cause a collision with the target and to pulverize the pulverized object. Efficient and good.

The second characteristic configuration related to the spare machine for the collision crushing system of the present invention is:
The adhesion pretreatment unit includes a heating and melting mechanism for heating and dissolving the surface of the sublimable granular material, and an adhesion mechanism for attaching the pulverized object to the surface of the sublimable granular material in a dissolved state. It is in the point.

  According to this configuration, the surface of the sublimable granule is heated and dissolved by the warming dissolution mechanism, and the object to be ground is attached to the surface of the sublimable granule in the dissolved state by the adhesion mechanism. It can be satisfactorily adhered to and held on the surface of the granular material. In the present invention, since the cooling preliminary processing in the cooling preliminary processing unit is accompanied after the processing in the adhesion preliminary processing unit, the adhesion becomes stronger.

The third characteristic configuration related to the spare machine for the collision crushing system of the present invention is:
The cooling pretreatment unit includes a low-temperature medium storage tank in which a cooling treatment liquid that forms a liquid phase under physical conditions for solidifying the sublimable substance is stored, and is obtained in the adhesion pretreatment unit in the low-temperature medium storage tank. The crushed object adhering granular material is settled and cooled.

  According to this configuration, the cooling pretreatment can be completed simply by dropping and supplying the pulverized object-attached granular material into the low-temperature medium storage tank.

The figure which shows the whole structure of the collision crushing system which concerns on 1st Embodiment. The figure which shows the whole structure of the collision crushing system which concerns on 2nd Embodiment. Explanatory drawing explaining the situation of collision crushing

A collision grinding system 100 according to the present invention will be described below with reference to the drawings.
FIG. 1 shows the overall configuration of the first embodiment.

  The collision crushing system 100 according to the present invention normally injects a jet j (which forms a jet) from a jet nozzle 10a (which forms a jet part) toward a target 10b, which is called a jet mill, and accompanies this jet j. 1 is a system mainly composed of a collision pulverization apparatus 10 that collides and crushes a granular pulverized object X guided to the target 10b with the target 10b. As shown in FIG. Separation / collection that includes a processing device 20 and a high-pressure gas supply device 30 for obtaining a high-pressure gas G, and that separates the pulverized object X sent out from the collision pulverization device 10 from the transport flow downstream of the collision pulverization device 10. A device 40 is provided. A suction blower 50 is provided on the gas discharge side (gas outlet 40a side) of the separation / collection device 40, and a post-processing device 60 is provided on the particulate matter take-out side (lower take-out portion 40b side).

  The collision pulverization system 100 is a system that uses, for collision pulverization, a pulverization target object-adhered granular material Cx, which is an example of a granular material, in which a pulverization target object X adheres to the surface of a sublimable granular material C made of a sublimable substance. There is a pre-processing device 20 and a post-processing device 60 unique to the present invention.

  Here, the pretreatment device 20 functions as a pretreatment unit that generates the pulverized object-adhered granular material Cx by attaching the pulverized material X to the surface of the sublimable granular material C made of a sublimable substance. The pulverized object-adhered granular material Cxo after the pulverization process constitutes the core of the pulverized object-adhered granular material Cxo under a predetermined physical condition environment, and sublimates the sublimable substance in the form of granular material. It functions as a post-processing unit for obtaining a finished grinding object x.

  As described above, in the present invention, since the pretreatment apparatus 20 has one feature of the present invention, the inventors also refer to this pretreatment apparatus 20 as an independent “split machine for a collision pulverization system”.

Pretreatment device (spare crushing system)
The configuration of the pretreatment device 20 is shown in the upper left of FIG.
As shown in the figure, the pretreatment device 20 pulverizes the surface of the sublimable granular material by contacting or colliding the granular pulverized object X with the surface of the sublimable granular material C made of a sublimable substance. The adhesion pretreatment unit 21 for obtaining the crushed object adhering granular material Cx to which the object has adhered, and the pulverized object adhering granular material Cx obtained by the adhesion preprocessing unit 21 are set to a temperature lower than the sublimation point of the sublimable substance. A cooling preliminary processing unit 22 for cooling is provided.

Adhesion preliminary processing unit The adhesion preliminary processing unit 21 includes a raw material quantitative supply mechanism 21a that quantitatively supplies a pulverized object X that is a granular material, and a granular material quantitative supply mechanism 21b that quantitatively supplies a sublimable granular material C that is a granular material. And is configured.

From the granular material fixed supply mechanism 21b, the sublimable granular material C is sequentially supplied to the descending surface 21c provided in the lower region of the grinding object spray zone Z.
Here, the granular material quantitative supply mechanism 21b is specifically a quantitative hopper that quantitatively supplies the granular material.

On the other hand, the raw material quantitative supply mechanism 21a sprays the pulverization target object X, which is supplied from the quantitative hopper 21d, and the pulverization target object X, which is supplied from the quantitative hopper 21d, to the pulverization target object spray zone Z. A spray nozzle 21e is provided. Further, a heating mechanism (not shown) is provided that blows warm air on the pulverization target object X stored in the quantitative hopper 21d to bring the pulverization target object X into a predetermined warming state.
Accordingly, the pulverized object X heated to a predetermined temperature is sprayed onto the spray zone Z.

As a result, in the lower part of the grinding object spray zone Z, the grinding object X adheres to the surface of the sublimable granular material C descending the part.
Here, the mass M of the sublimable granular material C is such that m / M is in the range of 0.00001 or more and 0.03 or less with respect to the mass m of the pulverized object X.

Cooling preliminary processing unit The cooling preliminary processing unit 22 applies the temperature of the sublimation substance sublimation point (solidification of the sublimable substance) to the pulverized object adhering granular material Cx obtained in the adhesion preliminary processing unit 22 under a predetermined pressure. Cool to a temperature below the point).

  As can be seen from FIG. 1, the cooling pretreatment unit 21 includes a low-temperature medium storage tank 22 a in which a cooling treatment liquid L that forms a liquid phase under physical conditions in which a sublimable substance solidifies is stored. The crushed object adhering granular material Cx obtained by the adhering pretreatment unit 21 is charged into the medium storage tank 22a, settled, and cooled and solidified. In the lower part of the low-temperature medium storage tank 22a, an inclined surface 22b for removing the crushed object adhering granular material Cx is provided, and the pulverized object adhering granular material Cx can be taken out together with the cooling treatment liquid L as appropriate. .

As a result, the crushed object adhering granular material Cx is cooled and cured by re-cooling, and the removal of the pulverized object adhering granular material Cx vaporizes the cooling treatment liquid L in the low-temperature medium storage tank 22a, and the sublimation substance It can be carried out easily by raising the temperature to such an extent that the solid state is maintained.
The crushed object adhering granular material Cx thus obtained is quantitatively supplied to the raw material receiving side (raw material supply unit 10c) of the collision pulverization apparatus 10 described above via the raw material supply mechanism 15 constituted by a double stopper. ing.

Collision Crushing Device As described above, the collision crushing device 10 injects a jet j from the jet nozzle 10a toward the target 10b, and is accompanied by the jet j and guided to the target 10b in a granular form. X is made to collide with the target 10b and pulverized.

In the illustrated example, the collision pulverization apparatus 10 includes a raw material supply unit 10c in a peripheral portion of a substantially cylindrical casing 10d and a target 10b in the casing 10d. Furthermore, the jet nozzle 10a which injects the jet jet j toward this target 10b is provided, and the classification part 10e is provided in the center site | part of the casing 10d.
The downstream side of the classification unit 10e is configured such that the conveyance flow is sucked vertically above the casing 10d, and is connected to the suction blower 50 provided on the downstream side of the separation / collection device 40 described above. .

Therefore, in the collision pulverization apparatus 10, a swirl flow is formed in the casing 10d by the jet j injected from the jet nozzle 10a and the suction in the classification unit 10e.
The raw material supply unit 10c described above is roughly configured to include an inflow port i that is in contact with the inner peripheral wall of the casing 10d, and the raw material supplied to the raw material supply unit 10c (present invention) The particulate matter Cx) to be crushed is sucked by the swirling flow formed by the jet nozzle 10a and is guided to and collided with the target 10b.
In the present invention, this chance of collision can be greatly increased. This situation is shown in FIG.
Then, the pulverized object x is sucked by the classification unit 10e as a pulverized material of the pulverized object-attached granular body Cx (pulverized object-attached granular body Cxo) and sent to the separation / collecting device 40.

Separation / collection device In the example shown in the figure, a centrifugal collection device is employed as the separation / collection device 40, and the conveyance flow that has conveyed the pulverized object-adhered granular material Cxo is separated / collected. A swirl flow is formed in the device casing 40c, and the granular material is lowered and deposited, taken out from the lower take-out portion 40b, and gas is sent from the gas outlet 40a to the suction blower 50 side.
The granular material Cxo collected by the separation / collection device 40 is in a state where the finely pulverized object x is attached to the granular material C of the sublimable substance described so far, and the post-processing device 60 It is sent and separated only into the crushed object x.

Post-Processing Device The post-processing device 60 is configured as an environmental chamber 60a. The environmental chamber 60a is provided with an environmental condition maintaining mechanism 60b that maintains its internal pressure and temperature, and sublimable substances are sublimated (from the solid phase to the gas). In a physical condition environment (which changes to a phase), a sublimable substance is sublimated, and the pulverized target object x can be separated as a solid.

Accordingly, the environment chamber 60a is provided with an inclined path 60c through which the collected matter collected by the separation / collection device 40 is dropped, and the pulverized crushed object x is accumulated below the inclined path 60c. A portion 60d is provided.
In this way, in the post-processing apparatus 60, the sublimation material forming the core of the pulverized object adhering granular material Cxo changes without going through the liquid phase, and thus the pulverized pulverized object x is accumulated without agglomeration. , Can be sent to subsequent steps.
The change of the sublimable substance here is a line extending from the triple point T of the target substance to the lower side which is the low temperature / low pressure side, and the substance undergoes a direct phase change (sublimation) from the solid phase to the gas phase. It is changing.

Therefore, in this collision crushing system 100,
In the preliminary processing apparatus 20 as a preliminary processing unit,
Performing a preliminary step of attaching the pulverized object X to the surface of the sublimable granular material C made of a sublimable substance to generate the pulverized object-adhered granular material Cx,
In the collision pulverization apparatus 10, the pulverization target object-adhered granular material Cx generated in the preliminary process is guided from the jet nozzle 10a to the target 10b along with the jet j, and the pulverization process for causing the target 10b to collide is performed.

  In addition, the preliminary process is obtained through an adhesion preliminary process that is performed by the adhesion preliminary processing unit 21 and that adheres the pulverized object X to the surface of the sublimable granular material C, and an adhesion preliminary process that is performed by the cooling preliminary processing unit 22. And a preliminary cooling step for cooling the crushed object adhering granular material Cx to a temperature lower than the sublimation point of the sublimable substance.

  Further, in the preliminary step, the surface of the sublimable granular material C is heated and dissolved, and the pulverized object X is adhered to the surface of the sublimable granular material C in the dissolved state.

  When the pulverization target object X is pulverized by the collision pulverization apparatus 10, the high pressure gas G is continuously fed from the high pressure gas supply apparatus 30 to the jet nozzle 10a. As such a high-pressure gas G, various inert gases such as nitrogen and carbon dioxide can be used, but compressed air is generally used as the high-pressure gas G. In addition, as a supply source of the high pressure gas G, the compressed air stored in the cylinder may be discharged, or the compressed air may be continuously supplied using a gas compression device such as a compressor.

The value of the pressure of the high-pressure gas G (unit: MPa: megapascal) is not particularly limited, but usually,
1.2 MPa ≧ P ≧ 0.6 MPa
Use a value of degree.
Water was used as the sublimable substance and the granular material was ice. The warm air was from room temperature to about 60 ° C.
In the cooling preliminary process, liquid nitrogen was used as the cooling treatment liquid L.
In the post-processing apparatus 60, ice as a sublimable substance was sublimated under sublimation conditions of 0.01 ° C. and 600 Pa or less.
As the pulverized product X, a resin was used.

Second Embodiment FIG. 2 shows a second embodiment of a collision crushing system 101 according to the present invention.
The same code | symbol was described regarding the apparatus similar to the above-mentioned 1st Embodiment.
The difference of the second embodiment from the first embodiment is that, in the formation process of the crushed object adhering granular material Cx, in the first embodiment, hot air is applied to the crushed object X in the quantitative hopper 21d. In the second embodiment, hot air is applied to the surface of the sublimable granular material C descending from the granular material supply mechanism 21b, which is a quantitative hopper, and the surface is heated and dissolved. It is in the point.
Even if it does in this way, the grinding | pulverization target object adhesion granular material Cx said to this invention can also be formed.

[Another embodiment]
(1) In the above embodiment, the example in which the sublimable substance is water (ice when it is in a granular form) is shown, but carbon dioxide (in the case of a granular form) as the sublimable substance. Dry ice) can also be used.

(2) In the above embodiment, the pulverization device is configured to form a swirl flow in the casing and collide the target object-adhered granular material with the target. As long as the target object-adhered granular material can be made to collide with the target, the target may be provided on one wall surface of a pulverizing apparatus chamber having a square shape, and a jet part may be provided at the opposite portion.

(3) In the above embodiment, when forming the pulverized object-attached granule, the pulverized object in a heated state sprayed on the pulverized object spray zone is brought into contact with the sublimable substance granule. Although it is configured to adhere, the object to be pulverized may be adhered to the granular material of the sublimable substance. Further, the pretreatment apparatus 20 is placed in a sufficiently low temperature environment, and the sublimation property is obtained in a state where the object to be pulverized is mixed with a sublimable substance in a liquid phase state (for example, water when the granular material is ice). It may be fixed by spraying on the surface of the granular material.

(4) In the above embodiment, the pre-treatment device 20 and the high-pressure gas supply device 30 are provided on the upstream side of the collision crushing device 10, and the separation / collection device 40 is provided on the downstream side of the collision crushing device 10. Although the structure provided with the suction blower 50 and the post-processing apparatus 60 independently was demonstrated, each apparatus can also be made into the functional part of a system.

10 Collision crusher (jet mill)
10a Ejection part (ejection part)
10b Target 20 Preliminary processing device (Preliminary machine for collision crushing system)
21 Adhesion pretreatment unit 21a Raw material quantitative supply mechanism 21b Granular material quantitative supply mechanism 22 Cooling pretreatment unit 30 High-pressure gas supply device 40 Separation / collection device (separation / collection unit)
50 Suction blower 60 Post-processing device (post-processing section)
100 collision crushing system (first embodiment)
101 collision crushing system (second embodiment)
j Jet (jet)
i Inlet x Crushed object C that has been pulverized Sublimable granular material (granular material)
Cx object to be crushed particles Cxo object to be crushed object G after pulverization process High pressure gas X object to be crushed Z object to be pulverized spray zone

Claims (10)

A collision pulverization method in which a jet is jetted from a jetting portion toward a target, and a granular pulverized object guided to the target is caused to collide with the target and pulverize with the target,
A preparatory step of attaching the pulverized object to the surface of the granular material having a mass larger than that of the pulverized object to generate a pulverized object-attached granular material;
A collision pulverization method in which the pulverization target object-adhered granular material generated in the preliminary step is guided from the ejection part to the target while being associated with the jet, and a pulverization step of causing the target to collide with the target. In the preliminary process,
An adhesion preliminary step of attaching the object to be crushed to the surface of the granular material;
The collision pulverization method according to claim 1, further comprising a cooling preparatory step of cooling the crushed object adhering granular material obtained through the adhesion preparatory step to a temperature below the solidification point of the granular material constituting material.   The collision crushing method according to claim 1 or 2, wherein, in the preliminary step, the surface of the granular material is dissolved and the object to be crushed adheres to the surface.   The collision pulverization according to any one of claims 1 to 3, wherein in the preliminary step, the surface of the granular body is heated and dissolved, and the object to be pulverized is attached to the surface of the granular body in the dissolved state. Method. The granular material is a sublimable substance having sublimability,
Under the physical condition environment where the sublimable substance sublimates,
The impact pulverization according to any one of claims 1 to 4, wherein the sublimable substance is sublimated, and the pulverized object to be pulverized is obtained by sublimating the sublimable substance from a pulverized product obtained through the pulverization step. Method.   6. The collision pulverization method according to claim 5, wherein the sublimable substance is water or carbon dioxide. A collision pulverization system that injects a jet flow from a jetting portion toward a target and collides with the target a powdery pulverized object guided to the target in association with the jet flow,
A pre-processing unit for attaching the pulverized object to the surface of the granular material having a mass larger than that of the pulverized object to generate a pulverized object-attached granular material;
A collision pulverization system comprising: a pulverization processing unit that causes the pulverized object-adhered granular material generated in the preliminary processing unit to follow the jet from the ejection unit to the target and to collide with the target. A granular object to be crushed is brought into contact with or collided with a surface of a sublimable granular material made of a sublimable substance to obtain a pulverized object adhered granular material in which the pulverized object adheres to the surface of the sublimable granular material. An adhesion pretreatment section;
A preparatory machine for a collision pulverization system, comprising: a cooling pretreatment unit that cools the crushed object adhering granular material obtained in the adhesion pretreatment unit to a temperature lower than a sublimation point of the sublimable substance.   The adhesion pretreatment unit includes a heating and melting mechanism for heating and dissolving the surface of the sublimable granular material, and an adhesion mechanism for attaching the pulverized object to the surface of the sublimable granular material in a dissolved state. The spare machine for a collision grinding system according to claim 8.   The cooling pretreatment unit includes a low-temperature medium storage tank in which a cooling treatment liquid that forms a liquid phase under physical conditions for solidifying the sublimable substance is stored, and is obtained in the adhesion pretreatment unit in the low-temperature medium storage tank. The preliminary apparatus for a collision pulverization system according to claim 8 or 9, wherein the pulverized object adhering granular material to be settled is cooled.

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