JP2024021382A - Breaking treatment facility for production of coarse aggregate, fine aggregate, and fluidization-treated soil raw material and manufacturing method of fluidization-treated soil raw material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for producing a raw material of a fluidization-treated soil with controlled soil particles by producing a raw material which is a substitute of a sand necessary for a raw material for a fluidization-treated soil from rubbles, blending a foreign matter-contaminated construction generated soil with rubbles, and removing and breaking foreign matters.

SOLUTION: A breaking treatment facility for producing coarse aggregates, fine aggregates and fluidization-treated soil raw materials of the present invention is assembled with a pre-treatment storage facility 10, a first hopper 20, a first sieve device 30, a primary breaking machine 40, magnetic separators 51, 52, a secondary breaking machine 60, a vibratory screen machine 70, a suction garbage selection machine 80, a second hopper 85, and a tertiary breaking machine 90.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a crushing facility for producing coarse aggregate, fine aggregate, and fluidized soil material, and a method for producing fluidized soil material.

Currently, at intermediate treatment plants for the reuse of debris, there is a problem where over-storage tends to occur due to an imbalance between the amount of debris received and the amount of roadbed material (crushed material with an average diameter of 40 mm or less) sold. In addition to this problem, there was the problem of having difficulty finding a way to dispose of the fine particles (shredder debris) that are generated as a by-product of crushing debris, as there is little use for it.

Therefore, if the fine particles generated as a by-product during crushing can be used as a substitute for sand and fine particles as raw materials for fluidized soil, debris can be used not only as roadbed material but also as fine aggregate. Can be done.

However, in order to improve the quality of fluidized soil, in addition to fine particles, mud (fine particles) is also required. Therefore, by using construction generated soil as a mud component, these can also be effective materials for fluidized soil.

Japanese Patent Application Publication No. 2021-167530

Therefore, the present invention aims to produce a raw material to replace sand, which is necessary as a raw material for fluidized soil, from rubble, as well as mix the rubble with construction soil contaminated with foreign substances, remove foreign substances and crush the soil, and The object of the present invention is to provide a method and apparatus for producing a raw material for fluidized soil with adjusted particles.

The present invention employs the following means to achieve the above object.

The crushing facility that produces coarse aggregate, fine aggregate, and fluidized soil raw materials according to the present invention includes:
a first hopper into which debris or construction soil is input;
a first sieve device that separates the debris or construction generated soil sent from the first hopper into those with a particle size smaller than that of coarse aggregate and those with a particle size larger than that;
a first crusher that crushes the fractioned material that has been separated into particles with a particle size larger than that of the coarse aggregate by the first sieve device;
a second crusher that further crushes the separated material that has passed through the first crusher;
a vibrating sieve that separates the material crushed by the secondary crusher into predetermined particle sizes;
a suction garbage sorter that collects garbage from the separated material with a particle size larger than the particle size of the fine aggregate separated by the vibrating sieve;
a second hopper into which the fractionated material that has been separated into particles having a first particle size or less by the first sieving device; and a tertiary crusher which crushes the fractionated material introduced into the second hopper;
a sending means for sending the crushed material crushed by the tertiary crusher to the vibrating sieve;
It is characterized by having the following.

By employing such a configuration, each product of coarse aggregate, fine aggregate, and fluidized soil raw material can be produced. In addition, fine aggregate made from rubble can be used as an alternative to sand as a raw material for fluidized soil, and construction generated soil can be used as a soil component of fluidized soil. Fluidized soil raw materials can be produced using only industrial waste.

Furthermore, in the crushing facility according to the present invention, the delivery means may be characterized in that the delivery speed can be changed.

By making the delivery speed of the delivery means changeable, it is possible to adjust the amount of raw material introduced from the second hopper.

Furthermore, the crushing treatment facility according to the present invention may be characterized in that a magnetic separator is provided next to the primary crusher.

By adopting such a configuration, magnetic substances can be efficiently removed.

Furthermore, in a method for producing fluidized soil raw materials using the crushing facility according to the present invention,
(1) Loading process of loading debris and construction soil into the first hopper.
(2) A first separation step in which the first sieve device separates debris with a particle size larger than coarse aggregate, debris and construction generated soil with a particle size smaller than coarse aggregate.
(3) A first crushing step in which the debris having a particle size larger than the coarse aggregate is crushed by a first crusher in the first sorting step.
(4) A second crushing step in which the crushed material obtained in the first crushing step is crushed by a second crusher until the particle size becomes equal to or smaller than that of coarse aggregate.
(5) The crushed materials crushed in the secondary crushing process are separated into those with a particle size smaller than the coarse aggregate but larger than the fine aggregate, and those with a particle size smaller than the fine aggregate using a vibrating sieve. A second separation step to obtain a fluidized soil raw material in which fine aggregate from debris and construction soil are mixed, which have been separated into particles with a particle size smaller than that of the fine aggregate.
It is characterized by consisting of.

By using the crushing treatment facility according to the present invention and passing through the above steps, debris and construction generated soil are put into the first hopper, and the debris can be used as an alternative raw material for sand as a raw material for fluidized soil. Since it is possible to use the fine aggregate that has been produced, and to use construction generated soil as the soil component of the fluidized soil, it is possible to produce the fluidized soil raw material using only industrial waste.

Moreover, in the method for producing a fluidized soil raw material according to the present invention, further:
(6) The method may include a re-feeding step of feeding the rubble and construction generated soil, which have been separated into coarse aggregates or less in particle size in the first sorting step, into a second hopper.

By adopting such a configuration, rubble and construction soil that have been separated into coarse aggregates can be efficiently sent to the tertiary crusher, so that they can be efficiently crushed to the particle size of fine aggregates. .

Furthermore, in the method for producing a fluidized soil raw material according to the present invention, further,
(7) The second sorting step may include a second re-feeding step in which aggregates having a particle size smaller than the coarse aggregate and larger than the fine aggregate are fed into the second hopper. .

By adopting such a configuration, debris larger than the particle size of fine aggregate can be sent to the tertiary crusher again, and all debris can be reduced to the particle size of fine aggregate.

Furthermore, in the method for producing a fluidized soil raw material according to the present invention, further,
(8) The method may include an adjustment step of adjusting the soil components of the fluidized soil by adjusting the amount of construction-generated soil input into the second hopper.

By employing such a process, it becomes possible to easily adjust the proportion of fine aggregate of rubble and soil components as raw materials for fluidized soil.

FIG. 1 is a schematic diagram of a crushing facility 100 according to an embodiment. FIG. 2 is an equipment flow diagram of the crushing facility 100 according to the embodiment. FIG. 3 is a process diagram of the crushing facility 100 according to the embodiment.

Next, embodiments of a crushing facility and a crushing method for producing coarse aggregate, fine aggregate, and fluidized soil raw materials according to the present invention will be described in detail with reference to the drawings. Note that the embodiments and drawings described below illustrate some of the embodiments of the present invention, and are not used for the purpose of limiting the configurations to these, and do not depart from the gist of the present invention. It can be changed as appropriate within the range.

As shown in FIG. 1, a crushing treatment facility 100 for producing coarse aggregate, fine aggregate, and fluidized soil raw materials according to the present invention mainly includes a pre-treatment storage facility 10, a first hopper 20, and a first sieve. Device 30, primary crusher 40, magnetic separator 51, 52, secondary crusher 60, vibrating sieve 70, suction garbage sorter 80, second hopper 85, tertiary crusher 90, and between each device A belt conveyor 91 is provided for conveying placed processed rubble or construction soil. Here, in this embodiment, coarse aggregate refers to one with a particle size of 40 mm or less, and fine aggregate refers to one with a particle size of 5 mm or less, but this particle size may be changed as appropriate depending on the intended use. be able to.

The arrangement and functions of each device will be explained below.

The pre-treatment storage facility 10 is a yard where debris and construction soil (hereinafter also referred to as "debris etc.") are stored. In this yard, as a pretreatment, the rubble is roughly crushed into a size that can be used in the crushing facility 100 using a concrete crusher or a hydraulic breaker attached to heavy machinery. In addition, construction generated soil is separated into those that can pass through the approximately 50 mm mesh and those that cannot, using a trommel basket with a mesh of approximately 50 mm. Debris and the like that have been pretreated in this manner are loaded into the first hopper 20 using heavy equipment. In this pretreatment step, foreign substances such as wood chips, metals, vinyl, and plastics are sorted out from among those that cannot pass through 50 mm. Note that "rubble" here refers to concrete fragments and other similar unnecessary materials generated due to the construction, reconstruction, or removal of structures. Construction generated soil refers to soil mixed with rubble, soil recovered from soil, soil mixed with roots, dredged soil, etc.

The first hopper 20 sends out the debris etc. that have been pretreated at the pre-treatment storage facility 10 to the first sieving device 30, or mixes the debris and construction generated soil and sends it out to the first sieving device 30.

The first sieve device 30 is a device that separates coarse aggregate into particles with a particle size smaller than that and particles with a larger particle size. It is best to use one that has an integral structure as a deck.
In this embodiment, since the coarse aggregate has a grain size of 40 mm or less, an example will be explained in which the coarse aggregate is made of a 40 mm lattice, but the lattice size can be changed as necessary. By this first sieving device 30, debris and the like are separated into those with a particle size of approximately 40 mm or more and those with a particle size of less than 40 mm.

The primary crusher 40 is a machine that roughly divides the particles, which is disposed next to the first sieving device 30, and crushes particles that have been separated by the first sieving device 30 to a particle size larger than 40 mm. It is a device that does For example, a compression crusher such as a jaw crusher may be used. Incidentally, debris and the like having a particle size of 40 mm or less are put into a second hopper 85 (described later), and sent via a magnetic separator 52 to a tertiary crusher 90 (described later) by a belt conveyor.

The magnetic separators 51 and 52 are devices that use magnets to remove metals such as iron contained in industrial waste and treated materials. The magnetic separator 51 is arranged next to the primary crusher 40 and separates debris and the like that have passed through the primary crusher 40 from metals. The magnetic separator 52 is disposed next to the second hopper 85 and similarly separates debris from metals. The separated metals are sold as recycled magnetic materials.

The secondary crusher 60 is a device that crushes rubble, etc. that have been coarsely crushed by the primary crusher 40, to a size smaller than the particle size of coarse aggregate, that is, 40 mm or less. Next, it is placed through a magnetic separator 50 and sent by a belt conveyor. The secondary crusher 60 can, for example, crush particles with a particle size of 40 mm or more into particles with a particle size of about 20 mm, or round off the corners of aggregate produced by crushing to produce high-quality aggregate products. It is recommended to use a crusher such as an impeller breaker, which is used for

The vibrating sieve 70 is a device that separates the rubble and construction soil that have been crushed by the secondary crusher 60 into predetermined particle sizes. For example, it is an apparatus for separating aggregates into coarse aggregates with a particle size larger than 40 mm, fine aggregates with a particle size of 5 mm or less, and particles between 40 mm and 5 mm. Debris and the like larger than 40 mm are again returned to the secondary crusher 60 by the belt conveyor 91. Debris and the like with a size of 40 mm or less are sent to a suction dust sorter 80, which will be described later.

The suction dust sorter 80 is a dust sorting device that, as a final finishing touch, adsorbs lightweight dust onto the screen on the screen discharge side using air pressure and automatically discharges it. It can separate vinyl, paper waste, wood waste, etc. Items that have passed through the suction dust sorter 80 can be shipped as products.

In the tertiary crusher 90, particles whose particle size was 40 mm or less in the first sieving device 30 and particles separated into particles of 40 mm to 5 mm by the vibrating sieve 70 are put into a second hopper 85 and recycled. It is for crushing. As the tertiary crusher 90, it is preferable to use an impact type crusher, such as a super sander or an impact crusher, which crushes, shreds, and sizes the processed material by applying an impact force to it. The rubble and construction soil that have passed through the tertiary crusher 90 are sent to the vibrating sieve 70 again.

Using the facilities configured as described above, methods for producing coarse aggregate, fine aggregate, and fluidized soil materials will be explained.

First, a method for producing coarse aggregate (particle size 40 mm to 0 mm) will be explained using FIGS. 1 to 3. The coarse aggregate is produced through the steps indicated by the solid line in FIG. 2. Coarse aggregate is produced solely from debris. First, the debris in the pre-treatment storage facility 10 is put into the first hopper 20. The input rubble is separated by the first sieve device 30 into rubble with a particle size larger than 40 mm, which is the particle size of the coarse aggregate, and rubble with a particle size of 40 mm or less. Debris larger than the particle size of the coarse aggregate is first crushed by a primary crusher 40, and after removing magnetic substances 55 by a magnetic separator 51, it is crushed by a secondary crusher 60 until it has a diameter of 40 mm or less. be done. Debris that has not been crushed to a particle size equal to or less than the coarse aggregate is separated by the next vibrating sieve 70, returned to the second crusher 60, and looped until the particle size is equal to or less than the coarse aggregate. The rubble that has been separated into particles with a particle size smaller than that of coarse aggregate by the vibrating sieve 70 is then shipped as a product after removal of mixed dust by a suction dust sorter. On the other hand, debris whose particle size is equal to or smaller than that of coarse aggregate by the first sieving device 30 is sent to the vibrating sieve 70 via the tertiary crusher 90 after removing the magnetic material 55 by the magnetic separator 52. Similarly, the rubble that has been sorted by the vibrating sieve 70 into particles having a particle size smaller than that of coarse aggregate is shipped as a product after the mixed dust is removed by the suction dust sorter 80.

Next, a method for producing fine aggregate (particle size of 5 mm to 0 mm) will be explained. The fine aggregate is produced through the steps indicated by the dotted line in FIG. 2. Fine aggregate is produced only from rubble. First, the debris in the pre-treatment storage facility 10 is put into the first hopper 20. The input debris is separated by the first sieving device 30 into debris larger than 40 mm, which is the particle size of the coarse aggregate, and debris smaller than the particle size of the coarse aggregate. Debris larger than the particle size of the coarse aggregate is first crushed by the primary crusher 40, and after removing the magnetic material 55 by the magnetic separator 51, it is crushed by the secondary crusher 60 to have the particle size of the coarse aggregate. It is crushed to a diameter of 40 mm or less. Debris that has not been crushed to a particle size equal to or less than the coarse aggregate is separated by the next vibrating sieve 70, returned to the second crusher 60, and looped until the particle size is equal to or less than the coarse aggregate. Among the debris having a particle size smaller than that of coarse aggregate, the debris separated by the vibrating sieve machine 70 into particles having a particle size of 5 mm or less, which is the particle size of fine aggregate, is shipped as a product. The debris separated by the vibrating sieve 70 into particles with a particle size of 40 mm or less and larger than 5 mm is sent to a second hopper 85 after removing mixed garbage by a suction garbage sorter 80, and is sent to a magnetic separator 52. After removing the magnetic material 55, it is sent to a tertiary crusher 90 and crushed. The rubble crushed by the tertiary crusher 90 is again sent to the vibrating sieve 70, and the rubble separated into particles of 5 mm or less, which is the particle size of fine aggregate, is shipped as a product. On the other hand, rubble with a particle size of 40 mm or less determined by the first sieving device 30 is put into the second hopper 85, and after removing the magnetic material 55 by the magnetic separator 52, it is passed through the tertiary crusher 90 and then passed through the vibration crusher 90. The rubble that is sent to the sieve 70 and similarly separated by the vibrating sieve 70 into particles having a particle size of 5 mm or less, which is the particle size of fine aggregate, is shipped as a product.

Next, a method for producing the fluidized soil raw material will be explained. Fluidized soil is wet soil stabilized soil that is fluidized by mixing muddy water containing a large amount of water with soil and solidifying material, and is poured into narrow spaces that are difficult to compact by earthworks. It is a civil engineering material that can fill gaps with water and ensure quality due to the strength and high density exhibited after solidification. It is a mixed material with soil components.

The production method of fluidized soil raw materials is generally produced through the following steps.
(1) Loading process of loading debris and construction soil into the first hopper.
(2) A first separation step in which the first sieve device separates debris with a particle size larger than coarse aggregate, debris and construction generated soil with a particle size smaller than coarse aggregate.
(3) A first crushing step in which debris having a particle size larger than that of the coarse aggregate is crushed by a first crusher in the sorting step.
(4) A second crushing step in which the crushed material obtained in the first crushing step is crushed by a second crusher until the particle size becomes equal to or smaller than that of coarse aggregate.
(5) The crushed materials crushed in the second crushing step are separated into those whose particle size is less than the coarse aggregate but larger than the fine aggregate, and those whose particle size is less than the fine aggregate, using a vibrating sieve. A second separation step to obtain a fluidized soil raw material in which the fine aggregate of rubble, which has been separated to a particle size smaller than that of the fine aggregate, and soil generated from construction are mixed.
(6) A re-feeding step in which the rubble and construction soil that have been separated in particle size below coarse aggregate in the first sorting step are fed into the second hopper.
(7) A second re-feeding step in which aggregates having a particle size smaller than the coarse aggregate and larger than the fine aggregate in the second sorting step are fed into the second hopper.
(8) An adjustment step in which the soil components of the fluidized soil are adjusted by adjusting the amount of soil generated from construction into the second hopper.

This will be explained in detail below.
(1) The charging step is a step of charging the debris and construction generated soil in the pre-treatment storage facility 10 into the first hopper 20.
(2) In the first separation process, the input rubble and construction generated soil are separated into debris larger than 40 mm, which is the particle size of coarse aggregate, and rubble and construction generated soil with a particle size of 40 mm or less, using the first sieving device 30. This is a separation process.
(3) The primary crushing process is a process in which debris having a particle size larger than the coarse aggregate is crushed by the primary crusher in the first classification process.
(4) The secondary crushing process is a process in which the secondary crusher 60 crushes the aggregate until it has a diameter of 40 mm or less, which is the particle size of the coarse aggregate. Debris that has not been crushed to a size of 40 mm or less is separated by the next vibrating sieve 70, returned to the second crusher 60, and looped until the size is 40 mm or less.
(5) In the second sorting step, the crushed materials crushed in the second crushing step are separated by a vibrating sieve 70 into those whose particle size is equal to or smaller than that of the coarse aggregate but larger than that of the fine aggregate; This is the process of separating fine aggregate into particles with a particle size smaller than that of fine aggregate. The rubble separated into pieces of 5 mm or less by the vibrating sieve 70 is mixed with the construction generated soil that has passed through the first sieve device 30, and is shipped as a fluidized soil raw material product.
(6) In the re-feeding step, debris with a particle size of 40 mm or less is fed into the second hopper by the first sieving device 30, and after removing the magnetic material 55 by the magnetic separator 51, it is passed through the tertiary crusher 90. The rubble is sent to the vibrating sieve 70 via the vibrating sieve 70, and similarly separated into particles with a particle size of 5 mm or less. It is shipped as a soil raw material product.
(7) In the second re-feeding process, the debris that has been sorted by the vibrating sieve 70 into particles with a particle size of 40 mm or less and larger than 5 mm is transferred to the second hopper 85 after the mixed garbage is removed by the suction garbage sorter 80. After being sent to a magnetic separator to remove magnetic substances, it is sent to a tertiary crusher 90 and crushed. The rubble crushed by the tertiary crusher is sent to the vibrating sieve again, and the rubble separated into pieces of 5 mm or less is mixed with the construction soil that has passed through the first sieve 30 and fluidized. It is shipped as a processed soil raw material product.
(8) In the adjustment step, the soil components of the fluidized soil are adjusted by adjusting the amount of soil input into the second hopper 85. When the amount of soil decreases, adjustment can be made by inputting soil generated from construction into the second hopper 85, and when the amount of soil increases, only debris is input into the first hopper 20, Adjustment can be made by increasing the amount of rubble and reducing the amount of construction soil that is fed into the second hopper 85. The belt conveyor 91a that sends the construction soil from the second hopper 85 to the third crusher has a speed adjustment function, so that the amount of construction soil introduced can be easily adjusted. In addition, in the process of manufacturing fine aggregate, only construction generated soil is inputted from the second hopper 85, and the blended amount of soil is adjusted in advance to produce a mixture with a particle size of 40 mm or less and larger than 5 mm. Good too.

Next, another embodiment of the method for producing fluidized soil raw materials will be explained. Coarse aggregate obtained by a method for producing coarse aggregate (particle size 40 mm to 0 mm) or fine aggregate (particle size 5 mm to 0 mm) Or/and a method of mixing construction soil with fine aggregate. Coarse aggregate and/or fine aggregate obtained by a method for producing fine aggregate (particle size 5 mm to 0 mm) is charged into the second hopper 85, and construction generated soil is charged into the second hopper 85. The coarse aggregate and/or fine aggregate and construction generated soil are sent to a tertiary crusher to be crushed and mixed after magnetic materials are removed by a magnetic separator. The mixed coarse aggregate and/or fine aggregate and construction soil are sent to a vibrating sieve, mixed with debris and construction soil that have been separated into pieces of 5 mm or less, and shipped as a fluidized soil raw material product. .

As described above, according to this facility, coarse aggregate, fine aggregate, and fluidized soil raw materials can be produced in one facility. In addition, when producing fluidized soil, even when construction generated soil is used, it is passed through the first sieve device 30, the vibrating sieve machine 70, and the suction garbage sorter 80, so that it can be used as soil free of foreign substances. construction soil can be used effectively.

As shown in the embodiments described above, it can be used industrially as a production facility and production method for coarse aggregate, fine aggregate, and fluidized soil raw materials.

10... Pre-treatment storage facility, 20... First hopper, 30... First sieve device, 40... Primary crusher, 51... Magnetic separator, 52... Magnetic separator, 55... Magnetic material, 60... Second crusher , 70... Vibration sieve machine, 80... Suction garbage sorter, 85... Second hopper, 90... Tertiary crusher, 91... Belt conveyor, 100... Crushing processing facility

Claims (7)

In crushing facilities that produce coarse aggregate, fine aggregate, and fluidized soil raw materials,
a first hopper into which debris or construction soil is input;
a first sieve device that separates the debris or construction soil sent out from the first hopper into those with a particle size smaller than that of coarse aggregate and those with a particle size larger than that;
a first crusher that crushes the fractioned material that has been separated into particles with a particle size larger than that of the coarse aggregate by the first sieve device;
a second crusher that further crushes the separated material that has passed through the first crusher;
a vibrating sieve that separates the material crushed by the secondary crusher into predetermined particle sizes;
a suction garbage sorter that collects garbage from the separated material with a particle size larger than the particle size of the fine aggregate separated by the vibrating sieve;
a second hopper into which the fractionated material that has been separated into particles having a first particle size or less by the first sieving device is inputted; and a tertiary crusher which crushes the fractionated material introduced into the second hopper;
a sending means for sending the crushed material crushed by the tertiary crusher to the vibrating sieve;
A crushing facility characterized by being equipped with. 2. The crushing facility according to claim 1, wherein the delivery means is capable of changing delivery speed. The crushing facility according to claim 1, further comprising a magnetic separator next to the primary crusher. A method of producing a fluidized soil raw material through the following steps using the crushing facility according to any one of claims 1 to 3.
(1) Loading process of loading debris and construction soil into the first hopper.
(2) A first separation step in which the first sieve device separates debris with a particle size larger than coarse aggregate, debris and construction generated soil with a particle size smaller than coarse aggregate.
(3) A first crushing step in which debris having a particle size larger than the coarse aggregate is crushed by a first crusher in the first sorting step.
(4) A second crushing step in which the crushed material obtained in the first crushing step is crushed by a second crusher until the particle size becomes equal to or smaller than that of coarse aggregate.
(5) The crushed materials crushed in the secondary crushing step are passed through a vibrating sieve to remove those whose particle size is less than the coarse aggregate but larger than the fine aggregate, and those whose particle size is less than the particle size of the fine aggregate. A second separation step to obtain a fluidized soil raw material in which the fine aggregate of the rubble, which has been separated into particles smaller than the particle size of the fine aggregate, and soil generated from construction are mixed. The method for producing a fluidized soil raw material according to claim 4, further comprising the following steps.
(6) A re-feeding step in which the rubble and construction soil that have been separated in particle size below coarse aggregate in the first sorting step are fed into the second hopper. The method for producing a fluidized soil raw material according to claim 4, further comprising the following steps.
(7) A second re-feeding step in which aggregates having a particle size smaller than the coarse aggregate and larger than the fine aggregate in the second sorting step are fed into the second hopper. The method for producing a fluidized soil raw material according to claim 4, further comprising the following steps.
(8) An adjustment step in which the soil components of the fluidized soil are adjusted by adjusting the amount of soil generated from construction into the second hopper.

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