JP2007301531A - Asbestos crushing system and asbestos crushing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crushing system and a crushing method appropriately crushing asbestos without scattering dust prior to the final treatment of asbestos. <P>SOLUTION: This asbestos crushing system comprises a crusher 1 storing water W therein and crushing charged asbestos A in water; a dewatering device 4 provided under the crusher 1 and dewatering the asbestos A containing water W to separate it from water W; a sealed vessel 5 storing the asbestos A discharged from the dewatering device 4; and a water tank 6 supplying water W to the crusher 1. The crusher 1 is composed of a coarse crushing part 2 coarsely crushing the asbestos A, and a fine crushing part 3 provided under the coarse crushing part 2 and finely crushing the asbestos A crushed in the coarse crushing part 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a system and method for pulverizing asbestos prior to final processing such as embedding processing and melting processing.

In recent years, health damage caused by asbestos has become a social problem, and as a result, the removal of asbestos used in building materials and spray materials has been actively promoted.
Among these asbestos, those used for building materials are generally classified as non-scattering asbestos because they have a specific gravity of 0.5 or more and are not scattered. Therefore, it is discarded while being mixed with general waste materials, or a lump of material separated from building materials is transported to the final treatment plant and discarded.

  However, when non-scattering asbestos is separated from the building material or cracked, it actually scatters. For this reason, asbestos dust discarded together with general waste materials is scattered around during transportation and disposal. In addition, a lump that is separated from the building material is scattered during separation or during transportation. In addition, since it is in the form of a lump, it has a large volume, and therefore there is a problem that it is difficult to handle in a transport or final processing place.

Moreover, what is used for a spraying material is classified as scattering asbestos, and is easy to fly. Therefore, it is lubricated when the building is dismantled, packed in plastic bags and discarded.
However, when the lubrication is not sufficient, there is a problem that it is easily scattered around.

  As described above, conventionally, there are many problems in the processing means until final processing of asbestos, and it cannot be said that it has been appropriately performed.

  Therefore, an object of the present invention is to provide a pulverization processing system and a pulverization processing method capable of appropriately pulverizing the dust without scattering the dust around the asbestos prior to final processing. is there.

In order to achieve the above object, the asbestos pulverization processing system according to claim 1 of the present invention is a system for pulverizing asbestos (A) prior to final processing such as embedding and melting,
A pulverizer (1) for storing water (W) in the interior and pulverizing the asbestos (A) charged in water, and provided under the pulverizer (1), pulverized by the pulverizer (1), A dehydrator (4) for dehydrating asbestos (A) containing water (W) and separating it from the water (W), and a sealed container for storing the asbestos (A) discharged from the dehydrator (4) ( 5) and a water tank (6) for supplying water (W) to the pulverizer (1).

  Moreover, the asbestos pulverization processing system according to claim 2 is provided with the pulverizer (1) in a coarse crushing part (2) for roughly crushing the asbestos (A) and a lower part of the rough crushing part (2). And the finely pulverized part (3) for finely pulverizing the asbestos (A) crushed by the coarsely pulverized part (2).

  The asbestos pulverization processing system according to claim 3 is a pipe having a circulation pump (8) for circulating the water (W) separated by the dehydrator (4) to the water tank (6). 7) is provided between the dehydrator (4) and the water tank (6).

  Furthermore, the asbestos pulverization processing system according to claim 4 is characterized in that at least the pulverizer (1) and the dehydrator (4) are sealed.

Furthermore, the asbestos pulverizing system according to claim 5 includes at least a pipe (7) having the pulverizer (1), a dehydrator (4), a water tank (6), and a circulation pump (8). It is mobile and can be processed on site.
This “on-vehicle” includes not only simply placing on the platform of the work vehicle but also placing on the worker's platform what is stored in the container.

  The asbestos pulverization method according to claim 6 of the present invention is performed prior to final processing such as embedding or melting of asbestos (A), and the asbestos (A) removed from the building material at the site After being pulverized in water, it is dehydrated and separated from water (W), and is transported to a final treatment plant in a sealed state.

  The asbestos pulverization method according to claim 7 is characterized in that water (W) separated during the dehydration process is used as water (W) used during the pulverization process.

  Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments of the invention described later.

  According to the asbestos pulverization processing system according to claim 1 of the present invention, asbestos is pulverized in water by a pulverizer, dehydrated by a dehydrator, and further stored in an airtight container. Can be pulverized without being scattered and transported to a final treatment plant. In addition, since the water tank is provided, sufficient water can be supplied to the pulverizer to reliably prevent generation of dust. Further, asbestos is pulverized by a pulverizer, the volume can be reduced, and handling in transportation and final processing can be facilitated.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the pulverizer is composed of the coarse pulverization part and the fine pulverization part, the asbestos is easily finely pulverized. can do. That is, since it is roughly crushed in the coarse crushing part and finely crushed in the fine crushing part, even large block asbestos can be pulverized without difficulty.

  According to the invention described in claim 3, in addition to the operational effects of the invention described in claim 1 or 2, a pipe having a circulation pump is provided between the dehydrator and the water tank. Can be used by circulating. Accordingly, wastewater containing asbestos dust can be reduced as much as possible.

  Furthermore, according to the invention described in claim 4, in addition to the effects of the invention described in claims 1 to 3, at least the pulverizer and the dehydrator are sealed, so that the dust of asbestos during the pulverization and dehydration process. Can be reliably prevented from splashing around.

  Furthermore, according to the invention described in claim 5, in addition to the function and effect of the invention described in claim 4, at least piping having a pulverizer, a dehydrator, a water tank, and a circulation pump can be mounted on the vehicle and moved freely. Since the on-site processing is possible, for example, the asbestos removed from the demolished building material can be immediately pulverized without being moved to a remote location. Thereby, scattering of dust can be prevented more effectively.

  According to the asbestos pulverization method according to claim 6, since the asbestos removed from the building material is pulverized in water, dehydrated and transported to the final treatment plant in a sealed state at the site, Asbestos dust can be prevented from scattering in the process of transporting to the treatment plant. Further, since the asbestos is pulverized, the volume can be reduced, and handling such as transportation and final processing becomes easy.

  According to the invention described in claim 7, in addition to the effects of the invention described in claim 6, since water is circulated and used, the amount of waste water containing asbestos dust should be reduced as much as possible. Can do.

  With reference to FIG. 1 thru | or FIG. 4, the asbestos processing system which concerns on embodiment of this invention is demonstrated. FIG. 1 is a block diagram showing an asbestos pulverization processing system. 2 is a block diagram of the rough crushing unit of the crusher 1 in the system, FIG. 3 is a block diagram of the fine crushing unit 3, and FIG. 4 is a block diagram of the dehydrator 4.

  This asbestos treatment system pulverizes asbestos A used for reinforcement in building materials at the site of demolition prior to final treatment such as burying treatment or melting treatment. , A sealed container 5, a water tank 6, and a pipe 7. The entire system is housed in a container 10 and hermetically sealed, and is mounted on a loading platform of a work vehicle so as to be movable.

  The pulverizer 1 stores water W therein and pulverizes asbestos A input from the input conveyor 9 in water. The crusher 1 is provided with a rough crushing unit 2 for roughly crushing asbestos A, and the asbestos A crushed by the rough crushing unit 2 more finely than the crushing process of the rough crushing unit 2. It comprises a fine pulverizing section 3 for pulverizing.

As shown in FIG. 2, the coarse crushing part 2 in the present embodiment is constituted by a biaxial shear crushing mechanism in which crushing blades 2b are provided on two rotating shafts 2a provided to face each other, and a block asbestos A Is crushed by the two crushing blades 2b.
Moreover, as shown in FIG. 3, the fine grinding | pulverization part 3 is comprised by the table 3a rotated in the horizontal direction, and the roller 3b rotated in the vertical direction, and pulverizes asbestos A finely between the table 3a and the roller 3b. .

The dehydrator 4 is provided below the pulverizer 1 and pulverized by the pulverizer 1 to dehydrate the asbestos A containing the water W and separate it from the water W.
As shown in FIG. 4, the dehydrator 4 circulates a belt filter 4a composed of a filter cloth with two rotating drums 4b, supplies asbestos A containing water W thereon, and supplies the water W naturally. It is dropped and filtered to separate the asbestos A from the water W.
Instead of the belt filter 4a, a filter press that applies a pressure equal to or higher than the atmospheric pressure can be used.

  Moreover, the airtight container 5 stores the asbestos A discharged | emitted from the dehydrator 4 in the airtight state. The water tank 6 stores water W therein and supplies the water W to the pulverizer 1 as necessary. The pipe 7 includes a circulation pump 8 that is provided between the dehydrator 4 and the water tank 6 and circulates the water W separated from the asbestos A by the dehydrator 4 to the water tank 6.

A pulverization method according to this embodiment, which can be performed using this asbestos pulverization system, will be described below.
First, the crushing processing system mounted on the work vehicle is transferred to the building demolition site.
Next, the asbestos A lump removed from the building material is charged into the pulverizer 1 by the charging conveyor 9. At this time, water W is supplied from the water tank 6 to the pulverizer 1.
Subsequently, the block-shaped asbestos A charged into the pulverizer 1 is roughly crushed by the coarse crushing unit 2 and then finely pulverized to about several millimeters by the fine crushing unit 3 located immediately below.

  Since the asbestos A is crushed and crushed both in water, dust is generated and does not scatter around. Since asbestos A is pulverized by the coarse crushing part 2 and the fine crushing part 3, even a large lump can be pulverized without difficulty.

The asbestos A finely pulverized by the fine pulverization unit 3 is sent to the dehydrator 4, dehydrated there, and then stored in the sealed container 5.
Asbestos A stored in the sealed container 5 is transported to the final treatment plant and buried in a sealed state. Therefore, dust is not scattered around. Further, the volume of this asbestos A is reduced because it is finely pulverized, so that it is easy to transport and handle at the final processing site.

  The water W separated from the asbestos A by dehydration passes through the pipe 7 by the circulation pump 8 and is returned to the water tank 6 to be used repeatedly. Accordingly, wastewater containing asbestos A dust can be reduced.

  The asbestos pulverization processing system and the pulverization processing method according to the present embodiment are not limited to the above-described pulverization processing of non-scattering asbestos used in building materials, but also pulverization of scatterable asbestos used in spraying materials. The same applies to the processing. Also in that case, asbestos is pulverized in water, dehydrated, and then transported to the final treatment plant in a sealed state, so that dust does not scatter around.

  Furthermore, the asbestos pulverization processing system and the pulverization processing method according to this embodiment can also be applied to pulverize bulky asbestos such as asbestos pipes and P tiles. In this case, the volume of these asbestos pipes and the like can be greatly reduced by pulverization, which is extremely effective in that subsequent conveyance and final processing are facilitated.

  In this embodiment, FIGS. 2 to 4 show an example of a pulverizer and a dehydrator used for asbestos pulverization. However, the present invention is not limited to this, and asbestos pulverization can be reliably performed in water. The asbestos and water can be separated thereafter.

It is a lineblock diagram showing the asbestos crushing processing system concerning the embodiment of the present invention. It is a block diagram which shows the rough crushing part of the grinder in the system shown in FIG. It is a block diagram which shows the fine grinding | pulverization part in the system shown in FIG. It is a block diagram which shows the dehydrator in the system shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crusher 2 Rough crushing part 2a Rotating shaft 2b Crushing blade 3 Fine crushing part 3a Table 3b Roller 4 Dehydrator 4a Belt filter (filter cloth)
4b Rotating drum 5 Sealed container 6 Water tank 7 Piping 8 Circulating pump 9 Carry-in conveyor 10 Container A Asbestos W Water

Claims (7)

A system that crushes asbestos prior to final processing such as embedding and melting,
A crusher that stores water inside and crushes the asbestos that is thrown into the water,
A dehydrator provided below the pulverizer, pulverized by the pulverizer, dehydrated asbestos containing water and separated from the water;
A sealed container for storing asbestos discharged from the dehydrator;
An asbestos pulverization system comprising: a water tank that supplies water to the pulverizer.   The pulverizer is composed of a rough crushing part for roughly crushing the asbestos, and a fine crushing part that is provided below the rough crushing part and finely crushes the asbestos crushed in the rough crushing part. The asbestos pulverization processing system according to claim 1.   The pipe | tube which has a circulation pump was provided between the said dehydrator and a water tank in order to circulate the water isolate | separated from asbestos by the said dehydrator to the said water tank. Asbestos grinding treatment system.   The asbestos pulverization system according to any one of claims 1 to 3, wherein at least the pulverizer and the dehydrator are sealed.   The asbestos pulverization processing system according to claim 4, wherein at least the pulverizer, the dehydrator, the water tank, and the pipe having the circulation pump are mounted on the vehicle so as to be movable, thereby enabling on-site processing. It is a processing method that is performed prior to final processing such as burying or melting asbestos,
An asbestos pulverization method comprising: pulverizing the asbestos removed from building materials in water, dehydrating and separating from the water, and transporting the asbestos in a sealed state to a final treatment plant.   The asbestos pulverization method according to claim 6, wherein water separated during the dehydration treatment is used as water used during the pulverization treatment.

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