Crushing facility for producing coarse aggregate, fine aggregate, and fluidized soil raw materials, and method for producing fluidized soil raw materials.
The crushing facility efficiently produces coarse and fine aggregates from rubble and construction waste, utilizing secondary fine particles as sand substitutes and construction-generated soil in fluidized soil, resolving storage issues and enhancing material utilization.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- SHINE HEAVY MASCH CO LTD
- Filing Date
- 2022-08-03
- Publication Date
- 2026-07-08
AI Technical Summary
Existing intermediate treatment plants face issues with excessive storage due to mismatched rubble intake and sales volume, and secondary fine particles generated during crushing have limited use, necessitating effective disposal methods.
A crushing facility that includes a first hopper, sieving device, primary and secondary crushers, vibrating screen, and suction waste sorting machine to produce coarse and fine aggregates, with adjustable discharge speed and magnetic separation, enabling the use of fine aggregates as sand substitutes and construction-generated soil as soil components for fluidized soil.
The facility efficiently produces coarse and fine aggregates, allowing their use in fluidized soil, and effectively utilizes construction waste soil as a soil component, thereby addressing storage issues and enhancing the utility of secondary fine particles.
Smart Images
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Abstract
Description
Technical Field
[0005]
[0001] The present invention relates to a crushing facility for producing coarse aggregate, fine aggregate, and raw materials for fluidized soil, and a method for producing raw materials for fluidized soil.
Background Art
[0002] Currently, intermediate treatment plants aiming to recycle rubble have problems such as a tendency to have an excessive storage due to a mismatch between the amount of rubble received and the sales volume of roadbed materials (crushed materials with an average diameter of 40 mm or less). In addition, there is a problem that the fine particles (crushed debris) that are secondarily generated by crushing the rubble have almost no use, and thus there is trouble in the disposal method.
[0003] Therefore, if the fine particles generated secondarily during this crushing can be used as a substitute for the sand and fine particles of the raw materials for fluidized soil, the rubble can be used not only as a roadbed material but also as a fine aggregate.
[0004] However, in order to improve the quality of the fluidized soil, in addition to the fine particles, mud (fine particles) is also required. Therefore, by using construction-generated soil as a mud component, these can also become effective materials for fluidized soil.
Prior Art Documents
Patent Documents
[0007] To achieve the above-mentioned objectives, the present invention employs the following means.
[0008] The crushing facility for producing coarse aggregate, fine aggregate and fluidized soil raw materials according to the present invention is: A first hopper into which rubble or construction waste soil is loaded, A first sieving device separates rubble or construction-generated soil discharged from the first hopper into particles with a particle size equal to or less than that of coarse aggregate and particles with a particle size greater than that, A primary crusher that crushes the separated material, which has been separated into particles larger than the particle size of the coarse aggregate by the first sieving device, A second crusher further crushes the separated material that has passed through the first crusher, A vibrating screen separates the separated material crushed by the second crusher into predetermined particle sizes, A suction waste sorting machine that collects waste from separated material with a particle size larger than the particle size of the fine aggregate separated by the vibrating screen machine, A second hopper into which the separated material, separated to a particle size of 1 or less by the first sieving device, is fed, and a third crusher crushes the separated material fed into the second hopper. A dispensing means for sending the crushed material crushed by the third crusher to the vibrating screen, It is characterized by having the following features.
[0009] By adopting this configuration, it is possible to produce coarse aggregate, fine aggregate, and fluidized soil raw materials. Furthermore, fine aggregate produced from rubble can be used as a substitute for sand as a raw material for fluidized soil, and construction-generated soil can be used as the soil component of the fluidized soil, thus enabling the production of fluidized soil raw materials using only industrial waste.
[0010] Furthermore, in the crushing facility according to the present invention, the discharge means may be characterized by its ability to change the discharge speed.
[0011] By making the discharge speed of the discharge mechanism adjustable, the amount of raw material mixed in from the second hopper can be controlled.
[0012] Furthermore, the crushing facility according to the present invention may be characterized by being equipped with a magnetic separator after the primary crusher.
[0013] By adopting this configuration, magnetic materials can be removed efficiently.
[0014] Furthermore, in a method for producing fluidized soil raw materials using the crushing facility according to the present invention, (1) The input process involves putting rubble and construction-generated soil into the first hopper. (2) A first sorting process in which a first sieving device separates rubble with a particle size larger than the coarse aggregate, rubble with a particle size smaller than or equal to the coarse aggregate, and construction-generated soil. (3) A primary crushing step in which rubble with a particle size larger than that of coarse aggregate as a result of the primary sorting step is primary crushed with a primary crusher. (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 is less than or equal to that of the coarse aggregate. (5) A second separation step in which the crushed material obtained in the second crushing step is separated by a vibrating screen into particles with a particle size of coarse aggregate or less but larger than the particle size of fine aggregate, and particles with a particle size of fine aggregate or less, and a mixture of fine aggregate from the rubble separated to a particle size of fine aggregate or less and construction-generated soil is obtained. It is characterized by consisting of the following.
[0015] By using the crushing facility according to the present invention and going through the above process, rubble and construction waste soil can be fed into the first hopper, allowing the use of fine aggregate produced from rubble as a substitute for sand as a raw material for fluidized soil, and allowing the use of construction waste soil as a soil component of the fluidized soil. Thus, fluidized soil raw materials can be produced using only industrial waste.
[0016] Also, in the method for producing the fluidized treatment soil raw material according to the present invention, further, (6) A reloading step of loading the rubble and construction-generated soil separated to have a particle size of not more than the coarse aggregate in the first classification step into the second hopper may be included.
[0017] By adopting such a configuration, the rubble and construction-generated soil separated to have a particle size of not more than the coarse aggregate can be efficiently sent to the third crusher, so that they can be efficiently crushed to the particle size of the fine aggregate.
[0018] Furthermore, in the method for producing the fluidized treatment soil raw material according to the present invention, further, (7) A second reloading step of loading, into the second hopper, those having a particle size not more than that of the coarse aggregate and larger than that of the fine aggregate in the second classification step may be included.
[0019] By adopting such a configuration, those larger than the particle size of the fine aggregate can be sent to the third crusher again, and all the rubble can be made to have the particle size of the fine aggregate.
[0020] Furthermore, in the method for producing the fluidized treatment soil raw material according to the present invention, further, (8) An adjustment step of adjusting the soil component of the fluidized treatment soil by adjusting the amount of soil loaded into the second hopper may be included.
[0021] By adopting such a step, the blending ratio of the fine aggregate of the rubble and the soil component as the fluidized treatment soil raw material can be easily adjusted.
Brief Description of Drawings
[0022] [Figure 1] FIG. 1 is a schematic view of a crushing treatment facility 100 according to an embodiment. [Figure 2] FIG. 2 is a facility flow diagram of a crushing treatment facility 100 according to an embodiment. [Figure 3] FIG. 3 is a process flow diagram of a crushing treatment facility 100 according to an embodiment. [Modes for carrying out the invention]
[0023] Next, embodiments of a crushing facility and 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 figures. The embodiments and drawings described below are illustrative of some embodiments of the present invention and are not intended to limit the scope to these configurations. They can be modified as appropriate without departing from the spirit of the present invention.
[0024] The crushing facility 100 for producing coarse aggregate, fine aggregate, and fluidized soil raw materials according to the present invention, as shown in Figure 1, mainly comprises a pre-processing storage facility 10, a first hopper 20, a first sieving device 30, a first crusher 40, magnetic separators 51 and 52, a second crusher 60, a vibrating screen 70, a suction waste separator 80, a second hopper 85, a third crusher 90, and a belt conveyor 91 arranged between each device for transporting processed rubble or construction waste soil. In this embodiment, coarse aggregate refers to aggregate with a particle size of 40 mm or less, and fine aggregate refers to aggregate with a particle size of 5 mm or less, but these particle sizes can be appropriately changed depending on the intended use.
[0025] The following describes the layout and function of each device.
[0026] The pre-processing storage facility 10 is a yard where rubble and construction waste soil (hereinafter also referred to as "rubble, etc.") are stored. In this yard, as a pre-processing step, the rubble is roughly crushed to a size usable in the crushing facility 100 using a concrete crusher or hydraulic breaker attached to heavy machinery. The construction waste soil is separated into materials that can pass through a mesh of approximately 50 mm and materials that cannot, using a trommel basket with a mesh of approximately 50 mm. The rubble, etc., after this pre-processing is then fed into the first hopper 20 using heavy machinery. At this pre-processing stage, foreign materials such as wood chips, metal, vinyl, and plastic are separated from the materials that cannot pass through the 50 mm mesh. Here, "rubble" refers to concrete fragments and other similar unwanted materials generated as a result of the construction, renovation, or demolition of structures. Construction waste soil refers to rubble-mixed soil, soil recovery soil, root-mixed soil, and dredged soil, etc.
[0027] The first hopper 20 either sends rubble and other materials that have been pre-treated in the pre-treatment storage facility 10 to the first sieving device 30, or mixes rubble with construction-generated soil and sends the mixture to the first sieving device 30.
[0028] The first sieving device 30 is a device that separates aggregate particles smaller than or equal to the coarse aggregate particle size from those larger than that particle size. For example, it is preferable to use a device that has a sieving grid (grizzly) integrated as a deck in front of a vibrating feeder such as a plate feeder, such as a grizzly feeder. In this embodiment, the coarse aggregate is defined as having a particle size of 40 mm or less, so the explanation will be given using a grid with a 40 mm size as an example, but the grid size can be changed as needed. This first sieving device 30 separates the rubble and other debris into those with a particle size of approximately 40 mm or larger and those with a particle size of 40 mm or smaller.
[0029] The first crusher 40 is a machine that crushes large pieces of material and is positioned after the first sieving device 30. It crushes material that has been separated by the first sieving device 30 to a particle size of approximately 40 mm or larger. For example, a compression type crusher such as a jaw crusher may be used. At this point, rubble with a particle size of 40 mm or less is fed into the second hopper 85 (described later) and sent via a belt conveyor through the magnetic separator 52 to the third crusher 90 (described later).
[0030] Magnetic separators 51 and 52 are devices that use magnets to remove metals, including iron, contained in industrial waste and processed materials. Magnetic separator 51 is positioned after the primary crusher 40 and separates the rubble and other materials that have passed through the primary crusher 40 from the metals. Magnetic separator 52 is positioned after the second hopper 85 and similarly separates the rubble and other materials from the metals. The separated metals and other materials are sold as recycled magnetic materials.
[0031] The second crusher 60 is a small-scale crushing device that crushes the coarsely crushed rubble and other materials from the first crusher 40 to a particle size smaller than that of coarse aggregate, i.e., 40 mm or less. It is positioned after the first crusher 40 via a magnetic separator 50 and is sent by a belt conveyor. As the second crusher 60, it is preferable to use a crusher such as an impeller breaker, which is used to crush materials with a particle size of 40 mm or more to a particle size of about 20 mm, or to round the corners of the aggregate produced by the crushing process in order to improve the quality of the aggregate product.
[0032] The vibrating screen 70 is a device that separates rubble and construction waste soil crushed by the secondary crusher 60 according to predetermined particle sizes. For example, it is a device for separating materials with particle sizes larger than 40 mm (coarse aggregate), 5 mm or smaller (fine aggregate), and between 40 mm and 5 mm. Rubble larger than 40 mm is returned to the secondary crusher 60 by the belt conveyor 91. Rubble smaller than 40 mm is sent to the suction waste sorting machine 80, which will be described later.
[0033] The suction waste sorter 80 is a waste sorting device that, as a final step, uses air pressure to attract lightweight waste onto the screen discharge mesh and automatically discharges it. It can sort plastic, paper scraps, wood scraps, etc. Only materials that have passed through the suction waste sorter 80 are ready for shipment as products.
[0034] The third crusher 90 is used to crush again materials that have a particle size of 40 mm or less in the first sieving device 30, or materials that have been separated into 40 mm to 5 mm by the vibrating screen 70. The third crusher 90 is preferably an impact-type crusher that crushes, breaks, and sized the material by applying impact force, such as a super sander or impact crusher. The rubble and construction-generated soil that have passed through this third crusher 90 are sent back to the vibrating screen 70.
[0035] Using the facilities configured as described above, the production methods for coarse aggregate, fine aggregate, and fluidized soil raw materials will be explained.
[0036] First, the production method for coarse aggregate (particle size 40 mm to 0 mm) will be explained using Figures 1 to 3. The coarse aggregate is produced through the solid line process shown in Figure 2. The coarse aggregate is produced solely from rubble. First, rubble located in the pre-processing storage facility 10 is fed into the first hopper 20. The fed rubble is separated by the first sieving device 30 into rubble with a particle size larger than the coarse aggregate particle size of 40 mm and rubble with a particle size of 40 mm or less. Rubble with a particle size larger than the coarse aggregate particle size is first crushed in the first crusher 40, magnetic material 55 is removed in the magnetic separator 51, and then crushed in the second crusher 60 until the diameter is 40 mm or less. Rubble that is not crushed to a particle size smaller than the coarse aggregate particle size is separated in the next vibrating screen 70 and returned to the second crusher 60, and the loop continues until the particle size is smaller than the coarse aggregate particle size. Then, the rubble separated to a particle size smaller than that of coarse aggregate by the vibrating screen 70 is sent to the vibrating screen 70 after any contaminants have been removed by a suction waste sorter before being shipped as a product. On the other hand, rubble that has been separated to a particle size smaller than that of coarse aggregate by the first screening device 30 is sent to the vibrating screen 70 via the tertiary crusher 90 after any magnetic material 55 has been removed by the magnetic separator 52, and similarly, the rubble separated to a particle size smaller than that of coarse aggregate by the vibrating screen 70 is sent to the vibrating screen 70 after any contaminants have been removed by a suction waste sorter 80 before being shipped as a product.
[0037] Next, the production method for fine aggregate (particle size 5 mm to 0 mm) will be explained. Fine aggregate is produced through the process shown by the dotted line in Figure 2. Fine aggregate is produced solely from rubble. First, rubble located in the pre-processing storage facility 10 is fed into the first hopper 20. The fed rubble is separated by the first sieving device 30 into rubble larger than the coarse aggregate particle size of 40 mm and rubble smaller than or equal to the coarse aggregate particle size. Rubble larger than the coarse aggregate particle size is first crushed in the first crusher 40, magnetic material 55 is removed in the magnetic separator 51, and then crushed in the second crusher 60 until the diameter is 40 mm or less, which is the coarse aggregate particle size. Rubble that is not crushed to a size smaller than the coarse aggregate particle size is separated in the next vibrating screen 70 and returned to the second crusher 60, and the loop continues until the particle size is smaller than or equal to the coarse aggregate particle size. Of the rubble with a particle size smaller than that of coarse aggregate, rubble separated by the vibrating screen 70 to a particle size of 5 mm or less, which is the particle size of fine aggregate, is shipped as a product. Then, rubble separated by the vibrating screen 70 to a particle size of 40 mm or less but larger than 5 mm is sent to the second hopper 85 after contaminating waste is removed by the suction waste sorter 80, and after magnetic material 55 is removed by the magnetic separator 52, it is sent to the third crusher 90 and crushed. The rubble crushed in the third crusher 90 is sent again to the vibrating screen 70, and rubble separated to a particle size of 5 mm or less, which is the particle size of fine aggregate, is shipped as a product. Meanwhile, rubble with a particle size of 40 mm or less, as determined by the first sieving device 30, is fed into the second hopper 85. After removing magnetic material 55 in the magnetic separator 52, it is sent to the vibrating screen 70 via the third crusher 90. Similarly, rubble separated into fine aggregate particles of 5 mm or less in the vibrating screen 70 is shipped as a product.
[0038] Next, we will explain the production method for fluidized soil raw materials. Fluidized soil is a wet soil stabilization treatment soil that is fluidized by mixing soil with mud containing a large amount of water and a solidifying agent. It is a civil engineering material that can be poured into narrow spaces where compaction by earthwork is difficult to fill gaps, and its quality can be ensured by the strength and high density it exhibits after solidification. Fluidized soil raw materials are a mixture of fine aggregate and soil components before the addition of water and solidifying agent.
[0039] The production method for fluidized soil raw materials generally follows the following process. (1) The input process involves putting rubble and construction-generated soil into the first hopper. (2) A first sorting process in which a first sieving device separates rubble with a particle size larger than the coarse aggregate, rubble with a particle size smaller than or equal to the coarse aggregate, and construction-generated soil. (3) A primary crushing step in which rubble with a particle size larger than that of coarse aggregate as a result of the sorting step is primary crushed with a primary crusher. (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 is less than or equal to that of the coarse aggregate. (5) A second separation step in which the crushed material obtained in the second crushing step is separated by a vibrating screen into particles with a particle size of less than or equal to the coarse aggregate and larger than or equal to the fine aggregate, and the fine aggregate of the rubble separated to a particle size of less than or equal to the fine aggregate and construction-generated soil are mixed to obtain a fluidized soil raw material. (6) A re-input step in which rubble and construction-generated soil separated to a particle size of coarse aggregate or less in the first sorting step is put into the second hopper. (7) A second re-input step in which aggregates with a particle size less than or equal to that of coarse aggregates but larger than that of fine aggregates in the second separation step are put into the second hopper. (8) An adjustment process to adjust the soil composition of the fluidized soil by adjusting the amount of construction-generated soil put into the second hopper.
[0040] The details are explained below. (1) The input process involves inputting rubble and construction-generated soil from the pre-treatment storage facility 10 into the first hopper 20. (2) The first sorting process is a process in which the input rubble and construction-generated soil are sorted by the first sieving device 30 into rubble with a particle size larger than 40 mm (the particle size of coarse aggregate), rubble with a particle size of 40 mm or less, and construction-generated soil. (3) The first crushing process is a process in which rubble with a particle size larger than the coarse aggregate, as determined by the first sorting process, is crushed in the first crusher. (4) The second crushing process involves crushing the coarse aggregate using the second crusher 60 until the aggregate has a diameter of 40 mm or less. Any rubble that is not crushed to 40 mm or less is separated by the next vibrating screen 70 and returned to the second crusher 60, and the process repeats until the aggregate is 40 mm or less. (5) In the second sorting process, the crushed material obtained in the second crushing process is separated by a vibrating screen 70 into particles with a particle size of 5 mm or less that is larger than that of the fine aggregate, and particles with a particle size of 5 mm or less that is smaller than that of the fine aggregate. The rubble separated to 5 mm or less by the vibrating screen 70 is mixed with the construction waste soil that has passed through the first screening device 30 and shipped out as a fluidized soil raw material product. (6) In the re-input process, rubble with a particle size of 40 mm or less, as determined by the first sieving device 30, is fed into the second hopper, where magnetic material 55 is removed by the magnetic separator 51, and then sent to the vibrating screen 70 via the third crusher 90. Similarly, rubble separated to a particle size of 5 mm or less by the vibrating screen 70 is mixed with the construction waste soil that has passed through the first sieving device 30 and shipped out as a fluidized soil raw material product. (7) In the second re-input process, the rubble separated into particles with a diameter of 40 mm or less and larger than 5 mm by the vibrating screen 70 is sent to the second hopper 85 after the mixed debris is removed by the suction debris sorter 80, and after magnetic materials are removed by the magnetic separator, it is sent to the third crusher 90 where it is crushed. The rubble crushed in the third crusher is sent to the vibrating screen again, and the rubble separated into particles of 5 mm or less is similarly mixed with the construction waste soil that has passed through the first screening device 30 and shipped out as a fluidized soil raw material product. (8) In the adjustment process, the soil composition of the fluidized soil is adjusted by adjusting the amount of soil put into the second hopper 85. If the soil content is too low, it can be adjusted by putting construction waste soil into the second hopper 85. If the soil content is too high, it can be adjusted by putting only rubble into the first hopper 20 to increase the rubble content and reducing the amount of construction waste soil put into the second hopper 85. The belt conveyor 91a that sends from the second hopper 85 to the third crusher has a speed adjustment function, which makes it easy to adjust the amount of construction waste soil introduced. Alternatively, in the process of manufacturing fine aggregate, it may be possible to manufacture a mixture with a particle size of 40 mm or less and greater than 5 mm by putting only construction waste soil from the second hopper 85 into the process to manufacture fine aggregate in advance and adjusting the soil composition.
[0041] Next, another embodiment of the production method for fluidized soil raw materials will be described. This method involves mixing construction-generated soil with coarse aggregate (particle size 40 mm to 0 mm) or fine aggregate (particle size 5 mm to 0 mm) obtained in the production method. The coarse aggregate (particle size 5 mm to 0 mm) and fine aggregate obtained in the production method are put into the second hopper 85, and construction-generated soil is also put into the second hopper 85. After removing magnetic materials from the coarse aggregate and / or fine aggregate and construction-generated soil using a magnetic separator, they are sent to a third crusher where they are crushed and mixed. The mixed coarse aggregate and / or fine aggregate and construction-generated soil are sent to a vibrating screen, where they are mixed with rubble and construction-generated soil separated to 5 mm or less, and shipped as a fluidized soil raw material product.
[0042] As described above, this facility allows for the production of coarse aggregate, fine aggregate, and fluidized soil raw materials in a single facility. Furthermore, when producing fluidized soil, even when using construction waste soil, it can be used as soil free of foreign matter by passing through the first sieving device 30, the vibrating screen 70, and the suction waste sorting machine 80, thus enabling the effective utilization of construction waste soil. [Industrial applicability]
[0043] As shown in the embodiments described above, the production facilities and production methods for coarse aggregate, fine aggregate, and fluidized soil raw materials are industrially applicable. [Explanation of Symbols]
[0044] 10…Pre-processing storage facility, 20…First hopper, 30…First sieving device, 40…First crusher, 51…Magnetic separator, 52…Magnetic separator, 55…Magnetic material, 60…Second crusher, 70…Vibrating screen, 80…Suction waste sorting machine, 85…Second hopper, 90…Third crusher, 91…Belt conveyor, 100…Crushing and processing facility
Claims
1. In a crushing facility that produces coarse aggregate, fine aggregate, and fluidized soil raw materials, A first hopper into which rubble or construction waste soil is loaded, A first sieving device separates rubble or construction-generated soil discharged from the first hopper into particles with a particle size equal to or less than that of coarse aggregate and particles with a particle size greater than that, A primary crusher that crushes the separated material, which has been separated into particles larger than the particle size of the coarse aggregate by the first sieving device, A second crusher further crushes the separated material that has passed through the first crusher, A vibrating screen separates the separated material crushed by the secondary crusher into predetermined particle sizes, A suction waste sorting machine that collects waste from separated material with a particle size larger than the particle size of the fine aggregate separated by the vibrating screen machine, A second hopper into which the separated material, separated to a particle size of 1 or less by the first sieving device, is fed, and a third crusher crushes the separated material fed into the second hopper, A dispensing means for sending the crushed material crushed by the third crusher to the vibrating screen, In a crushing facility equipped with, A method for producing fluidized soil raw materials through the following steps. (1) The input process involves putting rubble and construction-generated soil into the first hopper. (2) A first sorting step in which a first sieving device separates rubble with a particle size larger than that of coarse aggregate, rubble with a particle size smaller than that of coarse aggregate, and construction-generated soil. (3) A primary crushing step in which rubble with a particle size larger than that of coarse aggregate as a result of the primary sorting step is primary crushed with a primary crusher. (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 is less than or equal to that of the coarse aggregate. (5) A second separation step in which the crushed material obtained in the second crushing step is separated by a vibrating screen into particles with a particle size of coarse aggregate or less but larger than the particle size of fine aggregate, and particles with a particle size of fine aggregate or less, and a fluidized soil raw material obtained by mixing the fine aggregate of the rubble separated to a particle size of fine aggregate or less with construction-generated soil. (6) An adjustment process to adjust the soil composition of the fluidized soil by adjusting the amount of construction-generated soil put into the second hopper.
2. A method for producing a fluidized soil raw material according to claim 1, further comprising the following steps. (7) A re-input step in which rubble and construction-generated soil separated to a particle size of coarse aggregate or less in the first sorting step are put into the second hopper.
3. A method for producing a fluidized soil raw material according to claim 1, further comprising the following steps. (8) A second re-input step in which aggregates with a particle size less than or equal to that of coarse aggregates but larger than that of fine aggregates in the second separation step are put into the second hopper.