JP2916411B2 - Apparatus and method for separating calcium silicate insulation material waste - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separation device utilizing a difference in specific gravity and a method for separating calcium silicate insulation material waste using the separation device.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for separating industrial waste such as crushed refuse, a separation apparatus utilizing a difference in specific gravity is known. An example of this type of separation apparatus is disclosed in
There is a specific gravity difference discriminating apparatus described in Japanese Patent No. 71786. The specific gravity difference separating device, the object to be separated and the powder as a separation medium into the separation tank linked to the vibrator, while the powder in the vibrating separation tank is fluidized, the powder The separation target having a lower specific gravity than the body floats on the surface of the powder and is carried in the flow direction of the powder, while the separation target having a higher specific gravity than the powder sinks down in the powder and moves to the bottom of the separation tank. And the separation process of the separation target is performed.

[0003]

The above separation apparatus uses powder as a separation medium, and discharges the powder as the separation medium together with the object to be separated. Then, an object to be separated and a separation medium are sieved by a separately provided sieving machine. For this reason, in the case where a lump and a granular material are mixed in the object to be separated, it may be necessary to further separate the separating medium and the granular material after the separation processing by the sieving machine. The operation becomes complicated.

[0004] Among various industrial wastes, there is calcium silicate heat insulating material waste. This calcium silicate heat insulating material is easy to mold and has excellent heat insulation performance, so it is widely used as a heat insulating material for pipes, tanks, equipment, etc. in industrial fields such as power plants, steelworks, chemical plants, etc. This kind of heat insulating material is removed at the time of periodic inspection and replaced with a new heat insulating material, so it is dismantled at the time of the replacement, and a large amount of heat insulating material is discharged.

[0005] The above-mentioned calcium silicate insulation waste material is usually disposed of as industrial waste. After the waste material is pulverized, foreign substances such as metal fragments, wire debris, and stones mixed in the pulverized material are separated and removed. By doing so, it is possible to collect and reuse the calcium silicate. According to this, it is possible to greatly contribute to the reduction of industrial waste and resource saving.

SUMMARY OF THE INVENTION It is a main object of the present invention to solve the above two problems in combination, and in the case where a mass and a granular material are mixed in an object to be separated, a specific gravity difference is obtained. It is an object of the present invention to provide a separation device capable of performing a separation treatment by sieving at the same time as a separation treatment by sieving, and a method for separating calcium silicate heat insulating waste material using the same.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a calcium silicate is provided.
The separation device for waste heat insulating material is silicate
Higher specific gravity than Lucium insulation, and calcium silicate insulation
The gist comprises a container in which plastic balls having a lower specific gravity than foreign materials other than the material are housed in a layered form, a bottom of which is formed in a mesh having an opening of 1 to 5 mm, and a vibrator for vibrating the container.

Further, in the method for separating waste calcium silicate insulating material using the separation apparatus according to the present invention, a crushed material of the waste calcium silicate heat insulating material is used as a separation target, and the specific gravity is higher than that of the calcium silicate heat insulating material in the crushed material. Plastic balls having a lower specific gravity than the foreign matter other than the calcium silicate heat insulating material in the crushed material are accommodated in a layer, and the bottom portion has openings 1-5.
By using a separation device consisting of a container formed in a mesh of mm and a vibrator for vibrating the container, by supplying the crushed material on a plastic ball layer in the container vibrated by the vibrator. Due to the specific gravity difference between the crushed material and the plastic ball, the calcium silicate lump remaining on the plastic ball layer and foreign matter other than the calcium silicate heat insulating material settled out of the plastic ball layer and put out on the bottom mesh of the container. Separation treatment, and at the same time, sedimentation of the powder and particulate matter mixed in the heat insulating material waste material by sedimenting the gap between the plastic balls and sieving with the bottom mesh
The gist is that the separation process is performed.

The use of a plastic ball as a separation medium in the above-mentioned separation device is that molding is easy, and that the specific gravity can be freely adjusted by forming a hollow ball or filling a hollow ball with a high specific gravity substance. This does not hinder the sedimentation of sediment.

According to the structure of the above-mentioned separation apparatus, in the separation target supplied on the plastic ball layer, the low specific gravity substance is left in the plastic ball layer, and the high specific gravity substance is settled down on the plastic ball layer to form on the bottom mesh. At the same time, the particulate matter mixed in the sediment settles in the gap between the plastic balls and is separated by passing through the bottom mesh, so the lump and the particulate matter are mixed in the separation target. In such a case, efficient separation processing can be performed.

Further, according to the method for separating waste calcium silicate insulating material using the above-mentioned separating apparatus, the crushed waste material of calcium silicate insulating material is supplied onto the plastic ball layer to reduce the specific gravity of the crushed waste material. Of calcium silicate remains on the plastic layer,
Line debris, stones, etc. settle down the plastic ball layer and are put out on the bottom mesh of the container.At the same time, the powdery materials mixed in the heat insulating waste material settle the gaps between the plastic balls and form the bottom mesh. Since it passes through and is separated, the calcium silicate heat insulating material waste can be efficiently collected.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION As a preferred embodiment of the present invention (claim 3), a rectangular box-shaped container is provided with a mesh having an opening of 4 mm at the bottom and a diameter of 30 m in the container.
m, a calcium silicate heat insulating material used as an object to be separated by using a separating device in which plastic balls having a specific gravity of 0.2 g / cm ³ are housed in layers and a vibrator that reciprocates the container in the longitudinal direction is linked to the container. By supplying the crushed waste material onto the plastic ball layer and vibrating the container, the low specific gravity calcium silicate mass in the crushed material is left on the plastic ball layer, and the high specific gravity sedimentation that sediments the plastic ball layer The objects are put out on the bottom mesh. Further, the powdery and particulate matter mixed in the heat insulating material waste material settles through the gap between the plastic balls and passes through the mesh,
Separated.

[0013]

1 (A) to 1 (D) show an embodiment of a separation apparatus according to the present invention and a method for separating calcium silicate heat insulating waste material using the separation apparatus. 1A to 1D, reference numeral 1 denotes a rectangular box-shaped container constituting a separation device;
Is a mesh provided at the bottom of the container so as to be inclined in the longitudinal direction, 3 is a plastic ball housed in a layer in the container,
Reference numeral 4 denotes a hopper for supplying an object to be separated, and reference numeral 5 denotes a vibrator for reciprocating the container in its longitudinal direction. In this embodiment, the mesh 2 is provided with a gentle inclination so that the hopper side is slightly higher than the discharge port side, so that the separation speed can be increased as compared with the case where the mesh 2 is horizontal. Reversing the direction of the inclination decreases the separation speed but improves the accuracy of the separation.

The specific gravity of the plastic ball used as the separation medium in the separation device needs to have an intermediate specific gravity between the low specific gravity substance and the high specific gravity substance in the object to be separated. When the calcium silicate heat insulating material is used as the object to be separated, the specific gravity (density) of the calcium silicate heat insulating material currently generally used is approximately 0.1 to 0.2 g / c according to JIS standards.
The plastic ball used as the separation medium has a specific gravity of 0.1 to 0.2 g / cm ³ because it is set to m ³ .

The diameter of the plastic ball is determined in consideration of the opening of the bottom mesh of the container. That is, the diameter of the balls is set such that the size of the particles that can settle through the gap between the balls is slightly larger than the opening of the bottom mesh.

Calcium silicate heat insulating waste material often has dirt on its surface, and when it is to be reused, it is necessary to remove the surface layer (5 to 10 mm from the surface). Finely shredded materials generally cannot be reused.

Therefore, in order to reuse the waste calcium silicate insulation material, it is necessary to collect a lump having a size of about 10 mm or more. For this purpose, for example, a mesh having a mesh size of 4 mm is used as the bottom mesh of the container, and a hollow polypropylene ball having a specific gravity of 0.2 and a diameter of 30 mm is used as the plastic ball contained in the container. The result is obtained.

FIGS. 1A to 1D are schematic views showing a process of separating calcium silicate heat insulating waste material using a separation device. In the figure, (a) is a calcium silicate mass in the crushed material obtained by crushing the heat insulation waste material, (b) is a calcium silicate piece, (c) is a metal piece or stone, (d) is a wire scrap,
(E) is a piece of wood, and the crushed material also contains powdery and granular materials.

As shown in FIGS. 1A and 1B, the crushed material is supplied to the shallow layer side of the plastic ball layer, and the container is vibrated in the longitudinal direction to obtain a specific gravity difference from the plastic ball. As a result, the calcium silicate lump (a) to be reused is left on the plastic ball layer, and metal pieces or stones (c), wire debris (d), wood chips (e), etc. are shown in FIG. As shown in (1) to (D), the plastic ball layer is settled, and is put out on the bottom mesh 2 and separated. At the same time, the calcium silicate pieces (b) and the particulate matter (f) settle through the gaps between the plastic balls, are further sieved by the mesh 2, and collected under the container.

[0020]

As described above in detail, according to the present invention, the separation and sieving of the object to be separated can be performed simultaneously due to the difference in specific gravity. Further, it is possible to provide a separation apparatus capable of efficiently performing a separation treatment when a lump and a particulate matter are mixed in an object to be separated, and a method for separating calcium silicate heat insulating material waste using the same.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a separation process of a separation device according to the present invention and a method for separating a calcium silicate heat insulating material waste material using the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Bottom mesh of container 3 Plastic ball 4 Pulverized material supply hopper 5 Exciter a Calcium silicate lump Calcium silicate piece C Metal piece or stone

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshishige Ishizuka 2-8-22 Kozu, Odawara City, Kanagawa Prefecture (72) Inventor Yoshihiro Yokoi 9-5-22 Togami, Toride City, Ibaraki Prefecture (72) Inventor Tomoyuki Seki Chiba 11-37, Oyumino, Midori-ku, Chiba-shi (56) References JP-A-62-171786 (JP, A) JP-A-50-7156 (JP, A) JP-B-6-11433 (JP, B2) (58) Survey Field (Int.Cl. ⁶ , DB name) B07B 13/00-13/18

Claims (4)

(57) [Claims] 1. A material having a higher specific gravity than a calcium silicate heat insulating material.
Plastic balls having a lower specific gravity than foreign substances other than the calcium silicate heat insulating material are accommodated in layers, and the bottom has an opening of 1 to 5 m.
a container formed on a mesh m, calcium silicate coercive characterized in that it consists of a vibrator for vibrating the container
Separation device for hot materials . 2. The plastic ball has a diameter of 10 to 40 m.
m, calcium silicate insulation material waste separation apparatus according to claim 1, wherein the specific gravity of 0.1 to 0.2 g / cm ^3. 3. A crushed waste material of calcium silicate heat insulating material is used as a separation target, and has a higher specific gravity than the calcium silicate heat insulating material in the crushed material and a lower specific gravity than foreign matter other than the calcium silicate heat insulating material in the crushed material. A plastic ball is housed in a layered form, and a separating device including a container having a bottom formed of a mesh having an opening of 1 to 5 mm and a vibrator for vibrating the container is used. By supplying the crushed material on the plastic ball layer of, the crushed material, by the specific gravity difference with the plastic ball,
The calcium silicate agglomerate left on the plastic ball layer and the foreign matter other than the calcium silicate heat insulating material settled out of the plastic ball layer and put out on the bottom mesh of the container are separated and simultaneously mixed in the heat insulating material waste material. A method for separating calcium silicate insulating material waste material, wherein the powdery or granular material is settled in gaps between plastic balls and sieved with the bottom mesh to be separated. 4. The plastic ball has a diameter of 10 to 40 m.
m, calcium silicate insulation material according to claim 3 is a hollow polypropylene balls having a specific gravity of 0.1 to 0.2 g / cm ³
How to separate waste materials .