JP2011020092A - Method and apparatus for powder production - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for powder production capable of grinding a solid into a powder of a specified or smaller particle diameter by a compact apparatus and to provide a method and an apparatus for recycling a rubber as the base material from waste tires by utilizing the method and apparatus for powder production. <P>SOLUTION: There are provided a powder production method and a powder production apparatus wherein a solid fed into a rotary bottomed cylinder having many through-holes of a specified diameter around its peripheral wall is ground in the cylinder, and the ground product are discharged outside through the many through-holes of the specified diameter around the peripheral wall of the cylinder by a centrifugal force resulting from the rotation of the cylinder to collect a powder of a specified or smaller diameter. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method and an apparatus for producing a granular material having a predetermined particle size or less by pulverizing a solid, and particularly has means for collecting the granular material having a predetermined particle size or less using centrifugal force. The manufacturing method and manufacturing apparatus of the granular material which becomes. In addition, the present invention relates to a rubber recycling method and a recycling apparatus for a discarded tire that manufactures a rubber granular material having a predetermined particle size or less from the discarded tire using the manufacturing method and manufacturing apparatus for the powder.

In order to pulverize a solid material and obtain a granular material having a constant particle size, the solid material pulverized by a pulverizer is put into a mesh sieving device corresponding to a predetermined particle size, and is fixed by vibrating the sieving device. It is common practice to collect powder particles having a particle size equal to or smaller than the particle size by dropping them from the mesh of the sieve. Further, in order to efficiently collect coarse particles having a certain particle size or more remaining on the sieve without falling from the mesh of the sieve, the sieve is often inclined and arranged.
However, in this method, the solid material pulverized by the pulverizer must be transported to the top of the sieve, and even if a sieving device is provided in contact with the discharge port of the pulverizer, the coarse particles left behind are removed. In order to pulverize again with the pulverizer, it is necessary to convey the coarse granular material left by sieving to the inlet of the pulverizer by some means, and there has been a tendency to increase the size of the granular material manufacturing apparatus.

On the other hand, the massive destruction of used tires due to the spread of automobiles and the destruction of the environment such as fires caused by spontaneous ignition of piled tires have become social problems, and their reuse and recycling have become major issues. ing.
Reuse and recycle used tires as they are. Or it can be cut and used as playground equipment, or it can be burned as it is and used as a high calorie heat source, but on the other hand, it is roughly crushed by a crushing device and used to reinforce the rubber part of the tire A carcass made of synthetic resin fibers, etc. attached to a belt, a belt made of synthetic resin fibers, etc., attached to the inner surface of a portion (tread) where the tire is in contact with the road surface, and supports both ends of the carcass and a tire. A non-rubber material such as a metal bead wire fixed to a rim is peeled off from a rubber portion and separated, and rubber, synthetic resin fibers, and metals are reused as resources.
However, when reusing the above-mentioned discarded tires as resources, it is difficult to peel off and separate the non-rubber material from the rubber portion, and the separated rubber portion is made of synthetic resin fiber or metal non-rubber material. If it is included, there is a problem that the commercial value of the recycled rubber product is lowered.

Therefore, the present inventor previously stated, “A freezing step of freezing a waste tire using a refrigerant such as a low-temperature liquefied gas, and crushing the frozen waste tire, and from a rubber portion, a non-rubber such as a carcass, a belt and a bead wire” A crushing separation process for separating the parts, a separation process for separating the crushed waste tires from rubber parts, and non-rubber parts such as carcass, belts and bead wires, and the separated rubber parts into a predetermined particle size. An invention of a freeze pulverization method and a freeze pulverization apparatus for waste tires provided with a pulverization step for pulverization was performed (Japanese Patent Laid-Open No. 2002-219378).
In the invention of this “freezing and pulverizing method of waste tire and freeze pulverizing apparatus thereof”, the waste tire frozen from the freezing step to the crushing and separating step, the fragmented waste tire crushed from the crushing and separating step to the separating step, A means for conveying the non-rubber material crushed pieces and the separated rubber crushed pieces respectively from the separation process to the pulverization process is required, which tends to increase the scale of the entire apparatus.

JP 2002-219378 A

  In view of the above-mentioned background art, the present invention provides a method and an apparatus for producing a granular material that can pulverize a solid material and implement a granular material having a predetermined particle size or less with a compact device. Utilizing granule manufacturing method and manufacturing equipment, it is possible to efficiently separate and recycle rubber, which is the main material, from waste tires as a granular material of a certain particle size or less from other non-rubber materials with a compact device. An object of the present invention is to provide a rubber recycling method and a recycling apparatus for waste tires.

The present inventor has solved the above problems by the following means.
(1) The solid substance thrown into the bottomed rotating cylinder having a large number of through-holes with a constant diameter on the peripheral wall is pulverized in the cylindrical body, and the centrifugal force generated by the rotation of the cylindrical body A method for producing a granular material, wherein the pulverized material is discharged to the outside from a large number of through holes having a constant diameter, and the granular material having a predetermined particle size or less is collected.

  (2) Solid material thrown into a rotating cylinder with a bottom having a large number of through-holes on the peripheral wall is crushed in the cylinder while the rotation of the cylinder is stopped, and then the cylinder is rotated. A method for producing a granular material, wherein the pulverized material is discharged to the outside by a centrifugal force from a large number of through-holes having a constant diameter on a cylindrical peripheral wall, and the granular material having a predetermined particle size or less is collected.

(3) The powder as described in (1) or (2) above, wherein the means for pulverizing the solid matter in the cylindrical body is a pressable body that can be moved up and down and includes a large number of hard irregularities on the lower surface. A method for producing granules.
(4) The method for producing a granular material as described in (3) above, wherein the pressing body that can be moved up and down rotates in a direction opposite to the rotation direction of the bottomed cylindrical body.

  (5) The solid substance thrown into the cylindrical body is any one selected from plastic, metal, ceramics, glass, slag, asphalt, stone, wood, rubber, food, medicine, feed, and fertilizer. The manufacturing method of the granular material of any one of said (1)-(4) characterized by the above-mentioned.

(6) A bottomed rotating cylindrical body having a large number of through-holes with a constant diameter on the peripheral wall, means for pulverizing the solid material charged in the cylindrical body, and pulverized material pulverized in the cylindrical body. A powder comprising: means for collecting powder particles having a predetermined particle diameter or less obtained by being discharged to the outside from a plurality of through-holes having a constant diameter on the peripheral wall of the cylinder by centrifugal force accompanying the rotation of the cylinder Granule manufacturing equipment.
(7) The method for producing a granular material according to (6) above, wherein the means for pulverizing the solid substance in the cylindrical body is a pressable body that can be moved up and down and includes a large number of hard irregularities on the lower surface. apparatus.

(8) A waste tire for producing rubber particles by producing rubber particles having a predetermined particle size or less from a waste tire using the method for producing a powder according to (1) to (5) above. The rubber recycling method of
A first step of instantly freezing the waste tire with a refrigerant such as a low-temperature liquefied gas in a vacuum atmosphere to lose its elasticity, a second step of crushing the waste tire that has been frozen and lost its elasticity, and crushing the crushed waste tire A large number of crushed rubber pieces (solid matter) separated from materials other than rubber through the third step of separating the rubber and materials other than rubber used in the carcass, belt, and beat wire of the tire from the piece. The crushed rubber piece is crushed in the cylinder with a constant-diameter through-hole, and the cylindrical peripheral wall is penetrated by a large number of constant-diameter holes by centrifugal force generated by the rotation of the cylinder. A method for recycling rubber of waste tires, characterized in that rubber pulverized material is discharged to the outside through holes and rubber particles having a predetermined particle size or less are collected.

The rubber of a discarded tire that is produced by producing a granular material of rubber having a predetermined particle size or less from a discarded tire by using the powdered particle manufacturing apparatus described in the above item (6) or (7), thereby recycling the rubber. A recycling device,
A freezing device that instantaneously freezes a waste tire with a refrigerant such as a low-temperature liquefied gas in a vacuum atmosphere and loses elasticity, a crushing device that crushes a waste tire that has been frozen and loses elasticity, and a fragment of the crushed waste tire A waste tire rubber recycle comprising: a separation device for separating rubber and a material other than rubber used for the carcass, belt, and beat wire of the tire; and a manufacturing apparatus for the granular material. Recycling equipment.

  (10) An inclination for separating a rubber and a material other than rubber from a crushed waste tire crushed piece, connected to an outlet of the crushing device, and causing the waste tire crushed piece to flow down (9), characterized in that the rubber component crushed pieces dropped from the grids or sieve meshes are fed into the granular material manufacturing apparatus. The rubber recycling equipment for the described waste tire.

The following effects are exhibited by the “manufacturing method and manufacturing method of granular material” of the present invention.
<1> Solids charged in a bottomed rotating cylinder having a large number of through-holes with a constant diameter in the peripheral wall are pulverized in the cylindrical body, and the cylindrical peripheral wall is crushed by centrifugal force accompanying the rotation of the cylindrical body. Since the pulverized material is discharged from a large number of through-holes with a constant diameter and powder particles with a certain particle size or less are collected, the powder particles with a certain particle size or more cannot pass through the through-holes and remain in the cylinder. Therefore, there is no need to transfer the pulverized material with a certain particle size or more left on the sieve that existed in the conventional sizing method using a sieve to the inlet of the pulverizer. It can be pulverized again together with the solid matter to be made, and the apparatus can be downsized and the productivity can be improved.
<2> Further, after pulverizing the solid material charged in the bottomed rotating cylinder having a large number of through-holes having a constant diameter on the peripheral wall in the cylinder while the rotation of the cylinder is stopped, the cylinder Rotate and release the pulverized material to the outside through a large number of through-holes with a constant diameter on the peripheral wall of the cylindrical body by centrifugal force, and collect the powder particles of a certain particle size or less. The crushing time in a state where the rotation of the cylinder is stopped according to the hardness, input amount, etc. can be arbitrarily selected, and the rotating cylinder can be rotated once after the crushing in the cylinder is sufficiently performed. In this pulverization operation, a large amount of powder particles having a predetermined particle size or less can be obtained, and the efficiency of powder particle production can be improved.
<3> The means for pulverizing the solid matter in the cylindrical body is a pressable body that can be moved up and down having a number of hard irregularities on the lower surface, and the pressable body that can be moved up and down further has a rotational direction of the bottomed cylindrical body. Since it rotates in the reverse direction, the solid matter sandwiched between the pressing body having the uneven portion on the lower surface and the bottom of the bottomed rotating cylindrical body can be efficiently pulverized.

<4> Using the method and apparatus for producing a granular material having the effects described in <1> to <3> above, a rubber granular material having a predetermined particle size or less is produced from the discarded tire to recycle the rubber of the discarded tire. In the method and apparatus for achieving resource recycling, waste tires are instantly frozen with a refrigerant such as a low-temperature liquefied gas and are crushed by losing elasticity, so that the rubber can be easily crushed and the carcass, belt, and beat wire of the tire Separation from the non-rubber material becomes easy, and only the separated pieces of rubber are put into a bottomed rotating cylinder having a large number of through holes with a constant diameter on the peripheral wall and crushed. Because rubber powder particles of a certain particle size or less are collected by discharging the rubber pulverized material to the outside through a large number of through-holes of a certain diameter on the peripheral wall of the cylindrical body by the accompanying centrifugal force, particles that do not contain any material other than rubber Rubber powder with uniform diameter Obtained, which can contribute to improving the quality of products made with recycled rubber.
<5> An inclination for separating a rubber and a material other than rubber from a crushed waste tire crushed piece, connected to an outlet of the crushing device, and causing the waste tire crushed piece to flow down Since the rubber component crushed pieces dropped from the lattice or sieving eyes are put into the powder and particle manufacturing apparatus, the rubber crushed pieces are removed from the waste tire crushed pieces. The path | route which isolate | separates and injects into the manufacturing apparatus of a granular material can be shortened, and the rubber recycling apparatus of a waste tire can be compactized.

Process explanatory drawing of the manufacturing method of the granular material of the present invention Process explanatory drawing of the manufacturing method of the granular material of the present invention Sectional drawing of the principal part of the manufacturing apparatus of the granular material of this invention Block diagram showing the steps of the rubber recycling method for waste tires Explanatory drawing which shows an example of a structure of the rubber recycling apparatus of a waste tire

1: Manufacturing apparatus of powder body 2: Rotating cylindrical body 2a: Through hole 3: Press body 3a: Concavity and convexity part 4: Powder body collection part 4a: Powder body outlet 5: Solid material 6: Powder body 11: Freezing device 12: Crushing device 12a: Discharge port 13: Separation device 14: Sieve 15: Waste tire 15 ': Frozen waste tire 16: Rubber crushed pieces 17: Non-rubber crushed pieces (synthetic resin and metal crushed pieces )

  A method and apparatus for manufacturing a granular material according to the present invention, and a rubber recycling method and a rubber recycling apparatus for waste tires that separate and recycle rubber from waste tires using the manufacturing method and manufacturing apparatus. The form for implementing is demonstrated based on the figure of an Example.

First, the method for producing a granular material of the present invention will be described based on the process explanatory diagrams of the method for producing the granular material in FIGS. 1-1 and 1-2.
In the figure, 1 is a granular material manufacturing apparatus, 2 is a rotating cylindrical body, 2a is a through-hole, 3 is a pressing body, 3a is an uneven portion, 4 is a granular material collection unit, 4a is a granular material outlet, 5 is Solid matter, 6 is a granular material.
The method for producing a granular material according to the present invention pulverizes a solid material 5 put into a bottomed rotating cylindrical body 2 having a large number of through holes 2a having a constant diameter on a peripheral wall, in the cylindrical body 2, The pulverized material is discharged to the outside through a large number of through holes 2a having a constant diameter on the peripheral wall of the cylindrical body by centrifugal force accompanying the rotation of the cylindrical body 2, and the powder particles 6 having a predetermined particle diameter or less are collected.
Examples of the solid material 5 to be crushed include plastic, metal, ceramics, glass, slag, asphalt, stone, wood, rubber, food, medicine, feed, and fertilizer, and one of them is selected and crushed.

As shown in FIG. 1-1 (a), first, the granular material is manufactured by the method for manufacturing the granular material of the present invention. It starts by throwing it into the body 2. At this time, the rotation of the rotating cylindrical body 2 is stopped, and the pressing body 3 is lifted and separated from the rotating cylindrical body 2.
When the charging of the solid material 5 into the rotating cylindrical body 2 is completed, the pressing body 3 is lowered and inserted into the rotating cylindrical body 2 [FIG. 1-1 (b)].
When the lower surface of the lowering pressing body 3 comes into contact with the upper surface of the charged solid material 3, the pressing body 3 is rotated [FIG. 1-1 (c)], and the pressure generated by the lowering of the pressing body 3 and the rotating pressing body are rotated. The solids 5 are rubbed and pulverized by receiving the rotational force of the uneven portion 3a on the lower surface [FIG. 1-2 (d)]. At this time, it is also preferable that the pressing body 3 is configured so as to give a slight vibration to the pressing body 3 so that the fixed object is hit.
When the pulverization is almost finished, the rotation of the pressing body 3 is stopped, the rotating cylindrical body 2 is rotated to generate a centrifugal force, and as shown by an arrow in FIG. The granular material 6 having a certain particle size or less is discharged from a large number of through holes 2 a having a constant diameter on the peripheral wall of the rotating cylindrical body 2, and the discharged granular material 6 is collected in the granular material collecting unit 4.
The granular material 6 collected in the granular material collecting unit 4 is taken out from the granular material extraction port 4a to become a product, but a pulverized material having a certain particle diameter or more is a through-hole having a constant diameter on the peripheral wall of the rotating cylindrical body 2. It cannot pass through 2a and remains in the rotating cylindrical body 2.
When the collection of the powder particles 6 is completed, the rotation of the rotating cylinder 2 is stopped, the pressing body 3 is raised, a new solid material 5 is put into the rotating cylinder 2, and the certain amount left in the cylinder Along with the pulverized product having a particle size or larger, the powder and granule production steps (a) to (f) shown in “FIG. 1” and “FIG. 1-2” are repeated.

  In the method for producing a granular material according to the present invention, the solid material 5 is pulverized in the rotating cylindrical body 2 as described above, and the selection of the granular material having a predetermined particle size or less is made on the peripheral wall of the rotating cylindrical body 2. Depending on whether or not a plurality of through-holes 2a having a constant diameter are discharged by centrifugal force, the pulverized product having a certain particle size or more is left in the rotating cylinder 2 and again with the newly introduced solid material 5 again. Compared with the conventional method in which the pulverized product taken out from the pulverizer is selected by a sieve and the pulverized product having a certain particle size or more remaining on the sieve is again put into the pulverizer, the pulverized product is removed. This eliminates the step of putting the pulverized material remaining on the pulverizer again, thereby making the apparatus compact, shortening the working time, and improving the efficiency.

As shown in FIG. 2, the powder granule manufacturing apparatus of the present invention has a bottomed rotating cylindrical body 2 having a large number of through-holes 2 a having a constant diameter on a peripheral wall, and a solid material charged into the cylindrical body 2. As a means for pulverizing 5 in the cylindrical body 2, a pressing body 3 that can be moved up and down having a large number of hard irregularities 3a on the lower surface, and a centrifugal force generated by the pulverized material pulverized in the cylindrical body accompanying the rotation of the cylindrical body And the collection part 4 of the granular material 6 having a certain particle size or less obtained by being discharged to the outside from a large number of through-holes 2a having a certain diameter on the peripheral wall of the cylindrical body. A rotating mechanism that rotates the rotating cylindrical body 2 at a necessary number of revolutions as a centrifuge, an elevating mechanism that moves the pressing body up and down, and a rotating mechanism that is necessary for rotating the pressing body 3 are provided.
The rotation direction of the rotating cylindrical body 2 and the rotation direction of the pressing body 2 are opposite to each other.
Furthermore, it is also preferable that the pressing body 3 is provided with a fine vibration in the upper and lower directions so that the solid material 5 put in the rotating cylindrical body 2 is blown to promote pulverization.

An embodiment of a method for recycling rubber of a discarded tire, in which a rubber particle having a predetermined particle size or less is manufactured from a discarded tire by using the method of manufacturing a granular material of the present invention, and the rubber is recycled. A description will be given based on the process diagram of FIG.
In the figure, S1 is a pretreatment step, S2 is a freezing step, S3 is a crushing step, S4 is a separation step, and S5 is a pulverizing and sizing step.
As shown in FIG. 3, the rubber recycling method for the present discarded tire performed a pretreatment step S <b> 1 for removing the metal rim from the used discarded tire and cleaning and removing mud and dirt adhering to the tire. After that, the freezing step S2 in which the waste tire is instantly frozen in a vacuum atmosphere with a refrigerant such as a low-temperature liquefied gas to lose its elasticity, the crushing step S3 in which the waste tire that has been frozen and loses elasticity is crushed, and the crushing of the crushed waste tire Through the separation step S4 for separating the rubber crushed pieces and the crushed pieces of materials other than rubber used in the tire carcass, belt, and beat wire from the pieces, the separated rubber crushed pieces are converted into powder particles of the present invention. The rubber crushed pieces (solid matter) are introduced into a bottomed rotating cylindrical body 2 having a large number of through-holes 2a having a constant diameter on the peripheral wall, and the rubber is introduced into the cylindrical body 2 Crushing crushed pieces At the same time, the rubber pulverized product is discharged to the outside through a large number of through holes 2a having a constant diameter on the peripheral wall of the cylinder by centrifugal force accompanying the rotation of the cylinder 2, and rubber particles having a predetermined particle size or less are collected and re- It is to be recycled.

FIG. 4 shows an embodiment of a rubber recycling apparatus that implements this method of recycling rubber for discarded tires. In the figure, 11 is a freezing device, 12 is a crushing device, 12a is a discharge port, 13 is a separating device, 14 is a sieve, 15 is a waste tire, 15 'is a frozen waste tire, 16 is a rubber shredded piece, 17 is Non-rubber fragments (synthetic resin and metal fragments).
As shown in FIG. 4, the rubber recycling apparatus for the present discarded tire is frozen with a freezing apparatus 11 that instantaneously freezes the discarded tire 15 with a refrigerant such as a low-temperature liquefied gas in a vacuum atmosphere to lose the elasticity of the rubber. A crushing device 12 that crushes the discarded tire 15 ′, which is easily crushed due to loss of elasticity, and from which rubber has been easily peeled off from materials other than rubber such as carcass, belt, and beat wire by striking or impacting with a swing hammer, for example. The separation device 13 separates the rubber crushed pieces 16 from the crushed waste tire 15 crushed pieces and the non-rubber crushed pieces 17 of synthetic resin fibers and metals used in the tire carcass, belt, and beat wire. And the granular material manufacturing apparatus 1 of the present invention, and according to the steps shown in FIG. The apparatus of this is operated and a rubber granular material is manufactured.
A separating device 13 for separating the rubber crushed pieces 16 and the non-rubber crushed pieces 17 from the crushed waste tire crushed pieces is connected to the discharge port 12a of the crushing device 12, and is disposed in the waste tire. It is composed of an inclined lattice or sieve 14 for allowing the crushed pieces to flow down, and the rubber crushed pieces 16 that have fallen from the eyes of the lattice or sieve 14 are introduced into the granular material manufacturing apparatus 1 of the present invention. Yes.
Therefore, there is no need for a conveying device such as a belt conveyor to convey the crushed material between the crushing device and the separating device, and the separating device and the granular material manufacturing device, and the rubber recycling device for waste tires can be made compact. Work time is shortened.

Claims (10)

  The solid material thrown into the bottomed rotating cylindrical body having a large number of through-holes with a constant diameter on the peripheral wall is pulverized in the cylindrical body, and a large number of constant values on the peripheral wall of the cylindrical body are caused by the centrifugal force accompanying the rotation of the cylindrical body. A method for producing a granular material, wherein the pulverized material is discharged to the outside through a through-hole having a caliber and the granular material having a predetermined particle size or less is collected.   The solid material thrown into the bottomed rotating cylinder having a large number of through-holes on the peripheral wall is crushed in the cylinder while the rotation of the cylinder is stopped, and then the cylinder is rotated and centrifuged. A method for producing a granular material, characterized in that a pulverized product is discharged to the outside from a large number of through-holes having a constant diameter in a cylindrical peripheral wall by force to collect a granular material having a predetermined particle size or less.   The method for producing a granular material according to claim 1 or 2, wherein the means for pulverizing the solid substance in the cylindrical body is a pressable body that can be moved up and down and includes a large number of hard irregularities on the lower surface.   The method for producing a granular material according to claim 3, wherein the vertically movable pressing body rotates in a direction opposite to the rotation direction of the bottomed cylindrical body.   The solid material thrown into the cylindrical body is any one selected from plastic, metal, ceramics, glass, slag, asphalt, stone, wood, rubber, food, medicine, feed, and fertilizer. The manufacturing method of the granular material of any one of Claims 1-4.   A bottomed rotating cylindrical body having a large number of through holes of a constant diameter on the peripheral wall, a means for pulverizing the solid material charged in the cylindrical body, and a pulverized material pulverized in the cylindrical body And a means for collecting particles having a predetermined particle size or less obtained by being discharged to the outside through a plurality of through holes having a constant diameter on the circumferential wall of the cylindrical body by centrifugal force accompanying rotation. Manufacturing equipment.   7. The apparatus for producing a granular material according to claim 6, wherein the means for pulverizing the solid substance in the cylindrical body is a pressing body that is movable up and down and includes a number of hard irregularities on the lower surface. A method of recycling rubber for a discarded tire, wherein a rubber particle having a predetermined particle size or less is manufactured from a discarded tire using the method for manufacturing a granular material according to any one of claims 1 to 5, and the rubber is recycled. Because
A first step of instantly freezing the waste tire with a refrigerant such as a low-temperature liquefied gas in a vacuum atmosphere to lose its elasticity, a second step of crushing the waste tire that has been frozen and lost its elasticity, and crushing the crushed waste tire A large number of crushed rubber pieces (solid matter) separated from materials other than rubber through the third step of separating the rubber and materials other than rubber used in the carcass, belt, and beat wire of the tire from the piece. The crushed rubber piece is crushed in the cylinder with a constant-diameter through-hole, and the cylindrical peripheral wall is penetrated by a large number of constant-diameter holes by centrifugal force generated by the rotation of the cylinder. A method for recycling rubber of waste tires, characterized in that rubber pulverized material is discharged to the outside through holes and rubber particles having a predetermined particle size or less are collected. Recycle rubber of waste tires by recycling rubber particles by manufacturing rubber granules of a certain particle size or less from waste tires using the powder particle manufacturing apparatus according to claim 6 or 7. A device,
A freezing device that instantaneously freezes a waste tire with a refrigerant such as a low-temperature liquefied gas in a vacuum atmosphere and loses elasticity, a crushing device that crushes a waste tire that has been frozen and loses elasticity, and a fragment of the crushed waste tire A waste tire rubber recycle comprising: a separation device for separating rubber and a material other than rubber used for the carcass, belt, and beat wire of the tire; and a manufacturing apparatus for the granular material. Recycling equipment. A separation device for separating rubber and materials other than rubber from the crushed waste tire crushed pieces is connected to the discharge port of the powder particle manufacturing apparatus and flows down the waste tire crushed pieces. It is comprised by the inclined grid | lattice or a sieve, It is comprised so that the fragment of the rubber component which fell from the grid | lattice or the sieve mesh may be thrown into the manufacturing apparatus of the said granular material, It is characterized by the above-mentioned. The rubber recycling equipment for the described waste tire.