JP4236758B2 - Fine graining equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention finely divides a granular material in which particles to which contaminants such as contaminated soil and incinerated ash are attached is agglomerated into individual particles, as well as heavy metals and oils adhering to the surface of the particles The present invention relates to a granulation apparatus for removing pollutants such as water.
[0002]
[Prior art]
In recent years, there has been a problem that soil in the vicinity of factories such as chemical factories and metal smelting factories is contaminated with heavy metals, organochlorine compounds or oily components. In addition, since the crude oil is attached to the soil on the beach contaminated with crude oil that has flowed into the sea due to a marine accident, etc., and the excavated soil that is transported when tunneling the ground where the crude oil is present, it becomes difficult to treat it. There are often. In addition, combustible materials such as industrial waste and garbage that cannot be recycled are transported as incineration ash to a waste disposal site where they are buried in heavy metals and incineration processes. Dioxins and other contaminants are attached. Therefore, after removing the contaminants from the contaminated soil, extract the stones, sand, fine particles, etc. and reuse them, and extract solid particles that can be used effectively after removing the contaminants from the incineration ash, Establishment of technology to reduce the volume of incinerated ash to be discarded at the disposal site is desired.
[0003]
In general, such contaminated soil and incineration ash are granular bodies in which particles having a small particle diameter are aggregated, and contaminants such as heavy metals and oily components are not only the surface of the granular body, but also individual particles. It is thought that it adheres to the surface of the particles.
However, in a general crusher, it is difficult to easily separate and separate the contaminants adhering to the solid particles in the contaminated soil and incinerated ash. For example, if contaminated soil lump or incinerated ash is put into a ball mill or the like and pulverized, the contaminated soil lump or incinerated ash is finely divided, but the contaminants adhering to the surface of each particle must be sufficiently removed. In addition, the processing materials that are input can be uniformly finely pulverized and re-aggregated, so that the polluted substances removed and the crushed gravel, sand, fine particles and incinerated ash It becomes difficult to separate the solid particles inside.
[0004]
By the way, Japanese Patent Application Laid-Open No. 8-164363 discloses a crusher that removes sharp corners such as stones in the clay and crushes the earth lump and sand lump etc. without crushing the clay containing gravel and clay. Has been. 12A and 12B are diagrams showing the configuration of the crusher 10, wherein FIG. 12A is a side view, and FIG. 12B is a cross-sectional view taken along line AA of FIG. The crusher 10 is attached to the inner peripheral surface along the axial direction and has a cylindrical rotary drum 1 having a plurality of outer blades 1W protruding in the center direction, and is attached to the outer peripheral surface along the axial direction along the radial direction. A rotor 2 having a plurality of projecting inner blades 2W and mounted eccentrically with respect to the rotary drum 1 inside the rotary drum 1, and an annular gear 3 provided on the outer periphery of the rotary drum 1 by a motor 4; The rotating shaft 5 of the rotor 2 is rotated in the opposite directions by the driving mechanism 6 and compressed and sheared into the processing material S such as clay (hatched portion in FIG. 12B) charged from the material charging port 7. The treatment material S is crushed by applying a stress, or the crushed material is polished by mutual friction between the crushed treatment materials. Further, the crushing treatment by the crusher 10 is carried out dry or wet when grinding crushed stone, and when the earth and sand such as dredged soil containing gravel or clay is refined, it is added to the treatment material. While doing. The magnitude of the stress acting on the processing material is mainly adjusted by the distance between the rotating drum 1 and the rotor 2 (the eccentricity of the rotor 2) and the respective rotational speeds of the rotating drum 1 and the rotor 2. .
[0005]
[Problems to be solved by the invention]
However, the crusher 10 has the same mounting structure for the outer blade 1W and the inner blade 2W of the rotary drum 1 and the rotor 2 from the upstream side to the downstream side of the processing material. A process (hereinafter referred to as a pulverization process) for separating and pulverizing the aggregated granular material in which the particles are fixed without breaking the individual particles into almost independent particles, and the above-mentioned pulverization For each individual particle, a rubbing force between each particle is mainly applied to cause mutual polishing by friction between the particles, thereby separating foreign substances adhering to the surface of each individual particle. It has been difficult to effectively perform processing (hereinafter referred to as peptization processing).
[0006]
The present invention has been made in view of conventional problems, and agglomerated granular materials such as contaminated soil and incinerated ash are refined into particles of various sizes, and the surface of each of the above particles An object of the present invention is to provide a pulverization apparatus capable of efficiently separating and separating harmful substances adhering to the surface.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a granulating apparatus, wherein a plurality of grooves are provided at predetermined intervals in the axial direction of an inner blade of a rotor mounted inside a rotary drum, and the downstream side of the inner blade. The groove width is made narrower than the groove width on the upstream side, and the crushing process is mainly performed on the upstream side, and the peptization process is mainly performed on the downstream side.
[0008]
Further, in the granulating apparatus according to claim 2, the groove depth on the downstream side of the inner blade is made deeper than the groove depth on the upstream side.
[0009]
The atomization device according to claim 3 is attached to the inner peripheral surface along the axial direction and has a cylindrical rotary drum having a plurality of outer blades protruding in the central direction, and the outer peripheral surface along the axial direction. A rotor that has a plurality of inner blades that are attached and project in the radial direction, and that are eccentrically attached to the inside of the rotating drum, and the rotating drum and the rotor are rotated in opposite directions to each other, There are provided a plurality of stages of granulating means for refining the processing material composed of granular materials such as incinerated ash and soil put into the processing space between the rotor, and the processing material is provided for each of the refining means. And a plurality of grooves are provided at predetermined intervals in the axial direction of the inner blades of each of the finer means, and grooves provided in the inner blades of the downstream finer means. The width of the groove is the width of the groove provided in the inner blade of the finer means in the upstream stage. Also narrowed, primarily performs a disintegration with grain refining means upstream stage, in which to perform mainly peptizing treatment with grain refining means downstream stage.
[0010]
According to a fourth aspect of the present invention, the depth of the groove provided in the inner blade of the downstream finer means is greater than the depth of the groove provided in the inner blade of the upstream finer means. It is deep.
[0011]
According to a fifth aspect of the present invention, the diameter of the rotor of the downstream finer means is larger than that of the upstream finer means.
[0012]
According to a sixth aspect of the present invention, there is provided the atomizing apparatus according to any one of the first to fifth aspects, wherein a liner slit is provided on the processing material discharge side.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a configuration of a granulating apparatus according to an embodiment of the present invention, in which 20 is added to a treatment material such as contaminated soil or incinerated ash charged from a receiving hopper 11, A primary granulator, which is a first granulating means for performing a coarse crushing process on the treated material, 30 is a particle of 10 mm or more from the mud-like material discharged from the primary granulator 20. A vibrating screen 40 for sorting and separating the water is added to a treatment material composed of particles of less than 10 mm that have been finely divided by the primary finer 20 and passed through the vibration screen 30, and the treatment material is crushed and peptized. It is a secondary fine graining machine which is the 2nd fine graining means for performing.
FIG. 2 is a diagram showing the configuration of the primary atomizer 20, wherein 21 is a cylindrical rotating drum having a plurality of outer blades 21W attached to the inner peripheral surface along the axial direction and protruding in the center direction, A rotor having a plurality of inner blades 22W attached to the outer peripheral surface along the axial direction and projecting in the radial direction, and attached eccentrically to the rotary drum 21 inside the rotary drum 21, 23 is a processing material charging chamber, Reference numeral 24 denotes a rotating shaft of the rotor 22, 25 denotes a drive mechanism of the rotating shaft 24, 26 denotes a processing material discharge chamber, 27 denotes a partition wall 28 between the processing chamber 20S constituted by the rotating drum 21 and the rotor 22 and the processing material discharge chamber. Is a liner slit in which a plurality of slits having a slit width of about 5 to 20 mm are formed on an annular flat plate. The annular gear provided on the outer periphery of the rotating drum 21 and the motor that drives the annular gear are omitted. FIG. 3 is a diagram showing the configuration of the main part of the secondary atomizer 40, and the basic configuration is the same as that of the primary atomizer 20. In the figure, reference numeral 41 denotes a cylindrical rotary drum having a plurality of outer blades 41W, and 42 denotes a plurality of inner blades 42W ₁ and 42W ₂ which are eccentrically attached to the rotary drum 41 inside the rotary drum 41. A rotor 44 is a rotating shaft of the rotor 42. The inner blade 42W ₁ refers to the upstream inner blade, and the inner blade 42W ₂ refers to the downstream inner blade.
[0014]
Figure 4 is a diagram showing details of the inner blades 22W of the primary grain refining machine 20, Figure 5, Figure 6 is an inner blade of the inner blade 42W ₁ and the downstream side of the upstream side of the secondary comminution machine 40 42W It is a figure which shows the detail of ₁ , in which (a) figure is a top view, (b) figure is a front view, (c) figure is a side view. As shown in FIGS. 4 to 6, the inner blade 22W of the primary granulator 20 and the inner blades 42W ₁ and 42W ₂ of the secondary granulator 40 are each provided with a predetermined interval in the axial direction thereof. A plurality of grooves 22K and grooves 42K ₁ and 42K ₂ having a substantially U-shaped cross section are provided. The widths w ₂₁ and w ₂₂ of the grooves 42K ₁ and 42K ₂ provided in the axial direction of the inner blades 42W ₁ and 42W ₂ of the secondary granulator 40 are the axial directions of the inner blades 22W of the primary granulator 20 It is formed narrower than the width w ₁ of the groove 22K provided in the. In the secondary granulator 40, the height H ₂₂ of the downstream inner blade 42W ₂ is higher than the height H ₂₁ of the upstream inner blade 42W ₁ and the depth of the downstream groove 42K ₂ . The length h ₂₂ is formed deeper than the depth h ₂₁ of the upstream groove 42K ₁ . In addition, the height H ₁ of the inner blade 22W of the primary granulator 20 is substantially equal to the height H ₂₁ of the inner blade 42W ₁ on the upstream side of the secondary granulator 40, and the secondary granulator 40 is substantially equal to the design and the upstream side of the inner blade 42W ₁ groove 42K ₁ width w ₂₁ and width w ₂₂ of the groove 42K ₂ of the downstream side of the inner blades 42W ₂ of.
Further, as shown in FIGS. 7A and 7B, the outer diameter R ₂ of the rotor 42 of the secondary granulator 40 is set larger than the outer diameter R ₁ of the rotor 22 of the primary granulator 20. Thus, the processing gap of the secondary atomizer 40 is narrower than the processing gap of the primary atomizer 20. In secondary comminution machine 40, in order to ensure the strength of the inner blades 42W ₂ downstream, the outer diameter of the rotor 42 of the portion having a inner blades 42W ₂ on the downstream side, the inner blades on the upstream side 42W It is designed to be slightly larger than the outer diameter R ₂ of the rotor 42 having ₁ and to limit the height H ₂₂ of the inner blade 42W ₂ .
Further, the rotational speed of the secondary granulator 40 (relative speed between the rotary drum 41 and the rotor 42) is made higher than the rotational speed of the primary granulator 20, and the processing gap of the secondary granulator 40 is increased. The pressure P ₂ acting on the processing material S in the inside is made larger than the pressure P ₁ acting on the processing material S in the primary fine granulator 20 so that the collision speed between the granules of the processing material increases. I have to.
[0015]
In the primary atomizer 20, as shown in FIG. 8, the processing material S such as contaminated soil and incinerated ash put into the gap between the rotary drum 21 and the rotor 22, which is a processing gap, is outside the rotary drum 21. Since it is pulled down by the blades 21W and scraped upward by the inner blades 23W of the rotor 22, the processing material S is subjected to shear stress along with compressive stress, and the processing material is crushed and peptized.
Since the primary atomizer 20 has a large processing space and the pressure acting on the processing material S is relatively small, as shown in FIG. The particles p or the granules of the treatment material S are not fixed to each other, but compressive stress and shear stress are applied to the large-sized particles p, and the aggregated particles are placed on the fixing surface r. The crushing process is mainly performed in which the fine particles p are separated into almost independent individual particles p.
On the other hand, in the secondary granulator 40, as with the primary granulator 20, the processing material S is subjected to shear stress along with compressive stress, and the processing material S is crushed and peptized. The material S is the fine particles p that have been crushed by the primary finer 20 and passed through the vibrating screen 30, and the rotor diameter of the secondary finer 40 is larger than that of the primary finer 20. Since it is large, the processing space is narrow and the rotation speed is fast, so the pressure applied to the particles and the moving speed of the particles are large. Furthermore, since the rotor diameter is large, the contact area between the processing material S and the rotor 42 is large, and a rubbing action can be exerted on many granular materials. That is, in the secondary atomizer 40, as shown in FIG. 9 (b), a force in the rubbing direction is applied to the particles of the processing material S, and the surface of each particle by friction between the particles p. The peptization process for separating the contaminants q such as heavy metals adhering to the particles from the granular material p is mainly performed.
In the primary refining machine 20 as well, for example, a large lump having a certain particle size and having a certain degree of hardness, such as a piece of earthenware, has a small pressure applied to the particles. No processing is performed, and conversely, peptization processing is performed.
[0016]
Further, in the primary finer 20 and the secondary finer 40, as shown in FIG. 10, the outer blades 21W and 41W are slightly (θ to about 3 degrees) with respect to the rotation shaft of the rotary drums 21 and 41. By tilting downward, the processing material put into the processing space between the rotary drums 21 and 41 and the rotors 22 and 42 is moved in the downstream direction. Normally, the rotational speed of the rotors 22 and 42 is set to be higher than the rotational speed of the rotary drums 21 and 41. Therefore, the processing material introduced into the processing space is divided into the inner blades 22W ₁ , 42W ₁ , 42W ₂ grooves 22K, 42K ₁ , 42K ₂ and the grooves of outer blades 21W, 41W attached to be inclined downwardly, the processing material rises or descends along the rotation direction of rotors 22 and 42 while downstream. Sent to the side. Thus, moving the inner blades 42W _1, 42W grooves 42K _{1 2,} the width w ₂₁ of the 42K _2, w ₂₂ are narrow secondary comminution machine 40, the downstream direction of the process material than the primary grain refining machine 20 Therefore, the peptization processing efficiency is better than that of the primary fine granulator 20.
Further, in the secondary atomizer 40, the mounting angle of the outer blade in the final stage having a narrow processing space among the outer blades 41W is slightly different from the rotation shaft of the rotary drum 21 in contrast to the other outer blades 41W. By tilting upward (θ˜about 2 degrees), the processing material is made to flow backward to further improve the processing efficiency of peptization.
[0017]
Next, the operation of the atomization apparatus having the above configuration will be described.
First, the processing material S such as contaminated soil and incinerated ash is supplied from the receiving hopper 11 to the primary fine granulator 20 and the treated water is sent into the primary fine granulator 20 from a treated water inlet (not shown). The primary atomizer 20 has not only a relatively wide gap between the rotary drum 21 and the rotor 22 but also a low pressure acting on the particles, but also a wide width w ₁ of the groove 22K of the inner blade 22W and a rotational speed. Is slow, it breaks up large lumps or flocculates single large particles. Therefore, the processing material composed of the aggregated granule charged into the primary granulator 20 is sent in the downstream direction while being separated into individual particles. In addition, the contaminant attached to the surface of a single particle having a large particle size is peeled off and separated from the particle. Of the particles sent to the downstream side of the primary atomizer 20, the particles having a particle diameter of less than about 10 mm pass through the treatment material discharge chamber 26 together with moisture from each slit of the liner slit 27 provided in the partition wall 28. It is discharged out of the plane via. Further, some of the particles having a relatively large particle diameter of 10 mm or more are discharged from the central portion of the liner slit 27 to the treatment material discharge chamber 26, but most of the particles having a large particle diameter are primary finer 20. Is returned to the processing chamber 20S. The liner slit 27 can increase the resistance to the relatively large particles and improve the crushing effect in the primary atomizer 20.
The mud-like treatment material delivered from the primary fine granulator 20 is separated and separated by particles of 10 mm or more by the vibrating screen 30, and the mud-like treatment material containing the remaining particles of less than 10 mm is the secondary fine-grain. Sent to the control machine 40.
[0018]
In the secondary comminution device 40, than the inner blade 42W _1, grooves of 42W ₂ 42K _1, 42K width w _21, the width of the groove 22K of the inner blades 22W of w ₂₂ primary comminution machine 20 w ₁ of ₂ In addition to the narrow formation, the rotor diameter is increased to narrow the gap between the rotary drum 41 and the rotor 42, so that the processing material is sufficiently peptized, and further, the groove of the inner blade 42W ₂ on the downstream side 42K _two depths h ₂₂ deeply formed than the upstream side of the groove 42K ₁ depth h _21, the processing space on the downstream side so as to mainly perform peptizing process of further narrowing the processing material ing. Furthermore, by changing the mounting angle of the outer blade 41Z upward on the downstream side, the processing material is made to flow backward so that the peptization process is sufficiently performed. In addition, at the boundary between the upstream inner blade 42W ₁ and the downstream inner blade 42W ₂ , the processing space changes stepwise, so that the processing material does not flow smoothly downstream and is partially processed. Since the material is returned again to the inner blade 42W ₁ side and stays there, the peptization processing of the processing material further proceeds.
As described above, in the secondary atomizer 40, the processing material is further refined and contaminants such as heavy metals adhering to the surface of each particle due to friction between the particles are removed by peptization. It can be efficiently separated from the particles.
Since the separated contaminants such as heavy metals have a very small particle size, they dissolve or float in the treated water. For example, by using an appropriate classification means such as a liquid cyclone, the contaminants and the contaminants are used. It is possible to easily separate the particles from which particles have been removed.
[0019]
In the above example, the finer means is two stages, but the number of processing stages is not limited to this. For example, a tertiary pulverizer having a smaller interval between the rotor and the rotating drum than the secondary pulverizer 40 is provided downstream of the secondary pulverizer 40 to disintegrate the processing material. If the process is further advanced, contaminants such as heavy metals adhering to the surface of each particle of the treatment material can be reliably removed.
[0020]
In addition, as in the above-described secondary atomizer 40, if the atomizing device is set so that the processing gap for processing the processing material is sharply narrowed in the downstream direction, the rotor diameter, the groove spacing of the inner blades, etc. Is set as appropriate, and after the treatment that mainly pulverizes by sufficiently increasing the residence time on the upstream side, the stress applied to the above treatment material is increased on the downstream side to mainly treat the peptization. By performing the above, even if there is only one unit, the processing material can be efficiently crushed and peptized. However, in the case where many particles having a large particle diameter are mixed in the processing material or the particle diameters are not so uniform, it is better to use two atomization apparatuses as in this embodiment. Processing efficiency is good.
[0021]
【The invention's effect】
As described above, according to the first aspect of the present invention, a plurality of grooves are provided at predetermined intervals in the axial direction of the inner blades of the rotor attached to the inside of the rotating drum, and the width of the grooves Is narrowly set in the downstream direction, mainly the crushing process is performed on the upstream side, and the peptization process is mainly performed on the downstream side, so that the aggregated particles such as contaminated soil and incinerated ash The body can be refined into particles of various sizes, and contaminants such as heavy metals adhering to the surface of each particle can be efficiently separated and separated.
[0022]
According to the second aspect of the present invention, since the depth of the groove is set to be deeper in the downstream direction, the resistance to the movement of the processing material is increased and the processing efficiency of peptization can be improved.
[0023]
According to the invention described in claim 3, the finer means are provided in a plurality of stages so that the processing material sequentially passes through the finer means, and the inner blades of the finer means are provided. Since the width of the groove provided in the axial direction is set narrower in the downstream stage, the efficiency of refining contaminated soil, incinerated ash, etc., and separation of contaminants such as heavy metals adhering to the surface of each particle Can be significantly improved.
[0024]
According to the fourth aspect of the present invention, since the depth of the groove is set deep in the downstream stage, the processing efficiency of peptization can be improved.
[0025]
Further, according to the invention described in claim 5, the finely pulverizing means is provided in a plurality of stages so that the processing material sequentially passes through the finely pulverizing means and the rotor diameter of the finely pulverizing means. Is set to be larger stepwise in the downstream direction, the pressure acting on the processing material in the processing gap can be set higher in the subsequent stage, and the processing efficiency of peptization can be further improved.
[0026]
Further, according to the invention described in claim 6, since the liner slit is provided on the discharge side of the atomizing means, the resistance to relatively large particles can be increased, and the crushing effect can be improved.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a granulation apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram showing a configuration of a primary atomizer according to the present embodiment.
FIG. 3 is a diagram showing a configuration of a secondary atomizer according to the present embodiment.
FIG. 4 is a view showing a structure of an inner blade of a primary atomizer.
FIG. 5 is a view showing a structure of an inner blade provided on the upstream side of the secondary atomizer.
FIG. 6 is a view showing the structure of an inner blade provided on the downstream side of the secondary atomizer.
FIG. 7 is a view showing a rotor of a primary finer and a secondary finer.
FIG. 8 is a diagram for explaining the crushing and peptizing action according to the present embodiment.
FIG. 9 is a diagram for explaining the crushing and peptizing action according to the present embodiment.
FIG. 10 is a view showing a mounting state of the outer blade according to the present embodiment.
FIG. 11 is a diagram for explaining the peptizing action of the secondary atomizer.
FIG. 12 is a diagram showing a configuration of a conventional crusher.
[Explanation of symbols]
11 receiving hopper, 20 primary granulator, 20S processing chamber, 30 vibrating screen, 40 secondary granulator, 21, 41 rotating drum,
21W, 41W, 41Z outer blade, 22, 42 rotor,
22W, 42W _1, 42W ₂ flighting, 22K, 42K _1, 42K ₂ the groove of the blade,
23 processing material input chamber, 24, 44 rotor rotating shaft, 25 rotating shaft drive mechanism, 26 processing material discharge chamber, 27 liner slit, 28 partition.

Claims (6)

A cylindrical rotary drum having a plurality of outer blades attached to the inner peripheral surface along the axial direction and protruding in the center direction, and a plurality of inner blades attached to the outer peripheral surface along the axial direction and protruding in the radial direction. And a rotor mounted eccentrically with respect to the rotating drum inside the rotating drum, and the rotating drum and the rotor are rotated in opposite directions to be put into a processing space between the rotating drum and the rotor. In the atomization apparatus for atomizing the treated material composed of granular materials such as incinerated ash and soil, a plurality of grooves are provided at predetermined intervals in the axial direction of the inner blade, and downstream of the inner blade A granulation apparatus characterized in that the groove width on the side is narrower than the groove width on the upstream side. A cylindrical rotary drum having a plurality of outer blades attached to the inner peripheral surface along the axial direction and protruding in the center direction, and a plurality of inner blades attached to the outer peripheral surface along the axial direction and protruding in the radial direction. And a rotor mounted eccentrically with respect to the rotating drum inside the rotating drum, and the rotating drum and the rotor are rotated in opposite directions to be put into a processing space between the rotating drum and the rotor. In the atomization apparatus for atomizing the processing material composed of granular materials such as incinerated ash and soil, a plurality of grooves are provided at predetermined intervals in the axial direction of the inner blade, and the downstream of the inner blade A granulation apparatus characterized in that the groove depth on the side is made deeper than the groove depth on the upstream side. A cylindrical rotary drum having a plurality of outer blades attached to the inner peripheral surface along the axial direction and protruding in the center direction, and a plurality of inner blades attached to the outer peripheral surface along the axial direction and protruding in the radial direction. And a rotor mounted eccentrically with respect to the rotating drum inside the rotating drum, and the rotating drum and the rotor are rotated in opposite directions to be put into a processing space between the rotating drum and the rotor. The finely pulverized means for finely pulverizing the treatment material composed of granular materials such as incinerated ash and soil is provided in multiple stages so that the treatment material sequentially passes through each pulverization means. In the apparatus, a plurality of grooves are provided at predetermined intervals in the axial direction of the inner blades of the above-mentioned finer means, and the width of the grooves provided in the inner blades of the lower-stage finer means is set at the upstream stage. Narrower than the width of the groove provided in the inner blade of the means for atomizing Grain refining apparatus characterized by a. A cylindrical rotary drum having a plurality of outer blades attached to the inner peripheral surface along the axial direction and protruding in the center direction, and a plurality of inner blades attached to the outer peripheral surface along the axial direction and protruding in the radial direction. And a rotor mounted eccentrically with respect to the rotating drum inside the rotating drum, and the rotating drum and the rotor are rotated in opposite directions to be put into a processing space between the rotating drum and the rotor. The finely pulverized means for finely pulverizing the treatment material composed of granular materials such as incinerated ash and soil is provided in multiple stages so that the treatment material sequentially passes through each pulverization means. In the apparatus, a plurality of grooves are provided at predetermined intervals in the axial direction of the inner blades of the above-mentioned finer means, and the depth of the grooves provided in the inner blades of the downstream finer means is set to the upstream stage. Than the depth of the groove provided in the inner blade of Grain refining and wherein the was comb. A cylindrical rotary drum having a plurality of outer blades attached to the inner peripheral surface along the axial direction and protruding in the center direction, and a plurality of inner blades attached to the outer peripheral surface along the axial direction and protruding in the radial direction. And a rotor mounted eccentrically with respect to the rotating drum inside the rotating drum, and the rotating drum and the rotor are rotated in opposite directions to be put into a processing space between the rotating drum and the rotor. The finely pulverized means for finely pulverizing the treatment material composed of granular materials such as incinerated ash and soil is provided in multiple stages so that the treatment material sequentially passes through each pulverization means. In the apparatus, the diameter of the rotor of the finer means in the downstream stage is made larger than the diameter of the rotor of the finer means in the upstream stage. 6. The atomizing device according to claim 1, wherein a liner slit is provided on the processing material discharge side.

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