CN110665934A - Construction waste's recovery processing system - Google Patents

Construction waste's recovery processing system Download PDF

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Publication number
CN110665934A
CN110665934A CN201910887903.9A CN201910887903A CN110665934A CN 110665934 A CN110665934 A CN 110665934A CN 201910887903 A CN201910887903 A CN 201910887903A CN 110665934 A CN110665934 A CN 110665934A
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CN
China
Prior art keywords
separator
construction waste
sedimentation tank
sand
shower
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CN201910887903.9A
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Chinese (zh)
Inventor
孙嘉豪
应丹雷
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Taizhou Vocational and Technical College
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Taizhou Vocational and Technical College
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Priority to CN201910887903.9A priority Critical patent/CN110665934A/en
Publication of CN110665934A publication Critical patent/CN110665934A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00Operations not covered by a single other subclass or by a single other group in this subclass
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/58Construction or demolition [C&D] waste

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

The invention discloses a recycling treatment system of construction waste, which has the technical scheme that: the construction waste treatment device comprises a crusher, a magnetic separator, a screening machine, a conveying mechanism, a spraying device, a mud-sand separating device and a sedimentation tank, wherein a first conveying pipe is arranged between the spraying device and the mud-sand separating device, a second conveying pipe is arranged between the mud-sand separating device and the screening machine, a third conveying pipe is arranged between the mud-sand separating device and the sedimentation tank, and the conveying mechanism enables construction waste to sequentially pass through the crusher, the magnetic separator, the spraying device and the screening machine. Building rubbish loops through the processing back of breaker, magnet separator, separating centrifuge, utilizes the earth of water in with building rubbish to wash down, and most earth and a small amount of tiny granule get into silt particle separator through first conveyer pipe and separate, and the mud of isolating sends into the sedimentation tank through the third conveyer pipe, and the sieve separator is sent into and sieves together with other granule to the tiny sand for the third conveyer pipe.

Description

Construction waste's recovery processing system
Technical Field
The invention relates to the technical field of construction waste treatment, in particular to a construction waste recycling system.
Background
The construction waste refers to residue, waste soil, waste material, sludge and other wastes generated in the process of constructing, laying or dismantling and repairing various buildings, structures, pipe networks and the like by construction and construction units or individuals. With the acceleration of industrialization and urbanization, the construction industry is rapidly developed, and the quantity of the generated construction waste is increased.
Most of the construction wastes are not treated at all, and are transported to the suburbs or villages by construction units to be stacked or buried in the open air, so that a large amount of construction expenses such as land charge and garbage clearing and transporting expenses are consumed, and meanwhile, the problems of flying of dust, sand and ash in the clearing and stacking processes cause serious environmental pollution. Therefore, how to treat the construction waste more effectively is an important research direction for city construction. At present, through research and practice in the industry, the realization of recycling of the construction waste is proved to be a good way for practically solving the social problem.
The construction waste contains slag, concrete blocks, broken stones, broken bricks and tiles, waste mortar, slurry, waste plastics, waste metals, waste bamboo wood and the like, and the complicated components ensure that the construction waste can be used only by classification treatment. At present, the main method for recycling the construction waste is to firstly carry out primary crushing on the waste construction waste to reduce the granularity, then carry out sorting, separate components such as reinforcing steel bars, plastic scraps, wood chips and the like in the waste, then carry out further crushing to screen out particles with different diameters, and divide the particles into fine sand, medium sand and coarse sand from small to large according to the diameters of the particles, wherein each sand has a corresponding use mode, for example, the medium sand can be made into a water permeable brick through a brick machine.
However, in the process of treating the construction waste, there is no method for separating mud and sand, taking the medium sand as an example, after the medium sand mixed with soil is made into water permeable bricks, the water permeable bricks are easy to weather, and the soil on the surface can fall off when meeting water, so that the structural strength of the water permeable bricks is insufficient.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a construction waste recycling system, which improves the precision of separated sand materials by using equipment capable of separating mud and sand, so that the construction waste is more reliably and effectively recycled.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a construction waste's recovery processing system, includes breaker, magnet separator, separating centrifuge, sieve separator and transport mechanism, still includes spray set, silt-sand separator, sedimentation tank, be equipped with the first conveyer pipe that is used for transmitting silt-sand mixed liquid between spray set and the silt-sand separator, be equipped with the second conveyer pipe that is used for transmitting fine sand between silt-sand separator and the sieve separator, be equipped with the third conveyer pipe that is used for transmitting mud between silt-sand separator and the sedimentation tank, transport mechanism loops through breaker, magnet separator, separating centrifuge, spray set and sieve separator with construction waste.
Through above-mentioned technical scheme, building rubbish loops through the breaker, the magnet separator, after the separating centrifuge, useless metal in the building rubbish with use the saw-dust, the light material that plastics are given first place to is separated out, and building rubbish's shape is the graininess, later through spray set, utilize the earth of water in with building rubbish to wash down, most earth and a small amount of tiny particle get into silt particle separator through first conveyer pipe and separate, silt particle separator separates to the silt particle mixed liquid that gets into, mud sends into the sedimentation tank through the third conveyer pipe, the screening machine is sent into and sieves with other granule together to the tiny sand with the third conveyer pipe.
Preferably, spray set includes the support frame, sets up shower above the support frame, is in the collecting pit of support frame below, the tank that supplies water to the shower, be equipped with the silt pump in the collecting pit, the export and the first duct connection of silt pump, be equipped with screw feeder on the support frame, screw feeder has seted up a plurality of filtration pores on the lateral wall of collecting pit, shower and screw feeder's length direction parallel arrangement, be equipped with a plurality of nozzles along length direction in proper order on the shower, screw feeder offers the opening with screw feeder inner chamber intercommunication on the lateral wall of shower, opening and shower parallel arrangement just are in under the shower.
Through the technical scheme, the screw feeder drives the construction waste to move forward and turns over the construction waste at the same time, so that the construction waste can be more fully contacted with water sprayed from the nozzle, and soil attached to the construction waste is combined with the water as much as possible to form muddy water which enters the collecting tank through the filtering holes.
Preferably, both side walls of the opening extend upwardly into two baffles, with a plurality of nozzles located between the two baffles.
Through above-mentioned technical scheme, the baffle can block the building rubbish of following the splash in the opening at screw feeder during operation to the direction of motion of spun water in the restriction nozzle makes all water homoenergetic flow into in the opening, improves the utilization ratio of water resource and building rubbish's recycle ratio.
Preferably, the silt and sand separating device comprises a first cyclone separator and a second cyclone separator, wherein a feed inlet, a sand outlet end and an overflow end are formed in the first cyclone separator and the second cyclone separator respectively, the first conveying pipe is connected to the feed inlet of the first cyclone separator, the overflow end of the first cyclone separator is communicated with the feed inlet of the second cyclone separator, the sand outlet end of the first cyclone separator and the sand outlet end of the second cyclone separator are connected with the second conveying pipe respectively, and the overflow end of the second cyclone separator is connected with the third conveying pipe.
Through the technical scheme, the first cyclone separator separates mud and sand by utilizing centrifugal force, mud and water containing a small amount of fine sand enter the second cyclone separator for secondary separation, the fine sand recovery is further improved, concentrated fine sand liquid flowing out of the sand outlet end of the first cyclone separator and the sand outlet end of the second cyclone separator enters the screening machine together, and mud and water flowing out of the overflow end of the second cyclone separator are converged into the sedimentation tank.
Preferably, a fourth conveying pipe is arranged between the sedimentation tank and the water storage tank, and the opening of the fourth conveying pipe in the sedimentation tank is arranged at the upper end of the sedimentation tank.
Through above-mentioned technical scheme, during mud water constantly inward-remitted the sedimentation tank, through deposiing, form mud on the lower extreme position of sedimentation tank, and the upper end of sedimentation tank is comparatively clear water, carries comparatively clear water to the tank through the fourth conveyer pipe in, realizes the reuse of water resource.
Preferably, the mouth of the sedimentation tank is rectangular, and the openings of the fourth conveying pipe and the third conveying pipe on the sedimentation tank are respectively arranged on two side walls with short length of the sedimentation tank.
Through above-mentioned technical scheme, pull open the open-ended distance of third conveyer pipe and fourth conveyer pipe on the sedimentation tank, reduce the third conveyer pipe and carry the influence that the near water of opening of fourth conveyer pipe on the sedimentation tank caused when muddy water to the sedimentation tank, the fourth conveyer pipe of being convenient for carries out the drainage in the sedimentation tank in step.
Preferably, the device further comprises a dehydration recovery mechanism, the dehydration recovery mechanism is arranged between the spraying device and the screening machine, and the conveying mechanism is respectively connected between the spraying device and the dehydration recovery mechanism and between the dehydration recovery mechanism and the screening machine.
Through above-mentioned technical scheme, no matter the granule of the building rubbish behind the spray set or the fine sand that separates through mud sand separator all contain a large amount of water, utilize the dehydration recovery mechanism to carry out dehydration, can make things convenient for follow-up entering sieve separator to sieve, can carry out recovery processing to the water resource again.
Preferably, the dehydration recovery mechanism comprises a vibration plate and a water collecting tank, wherein the vibration plate is inclined to the ground, the water collecting tank is positioned below the vibration plate, a vibration motor is arranged on the vibration plate, a filter seam for water to pass through is formed in the vibration plate, and one end, with the high height, of the vibration plate is close to one side of the spraying device.
Through above-mentioned technical scheme, utilize building rubbish's gravity to roll from the flitch that shakes and fall everywhere on the transport mechanism between dehydration recovery mechanism and sieve separator, at this in-process, contain water among the building rubbish and can follow and flow into the catch basin in the crack, and vibrating motor can constantly make the flitch vibration that shakes, can reduce building rubbish and attach to the flitch that shakes and the condition that the delay appears, can shake water from building rubbish again and fall for the recovery to the water resource, make the length of the flitch that shakes need not the overlength.
In summary, compared with the prior art, the beneficial effects of the invention are as follows:
1. the quality of a product manufactured by the construction waste is improved by cleaning the soil in the construction waste;
2. the muddy water formed by cleaning the construction waste is screened, so that the fine granular construction waste mixed in the muddy water is recovered, and the recovery utilization rate of the construction waste is improved;
3. through precipitating the muddy water and purifying, utilize partial clean water once more, improve the utilization ratio of water resource.
Drawings
FIG. 1 is a schematic view of an overall connection structure of the embodiment;
FIG. 2 is a schematic view showing the connection between the spraying device and the sand-mud separating device in the embodiment;
FIG. 3 is a partial sectional view of a spray device according to an embodiment;
FIG. 4 is a schematic structural view of a sand-mud separating device in the embodiment;
FIG. 5 is a schematic structural view of a dehydration recovery mechanism in the embodiment;
FIG. 6 is a schematic structural view of a settling tank in the example.
Reference numerals: 10. a crusher; 20. a magnetic separator; 30. a separator; 40. a screening machine; 51. a first conveyor belt; 52. a second conveyor belt; 53. a third conveyor belt; 54. a fourth conveyor belt; 55. a fifth conveyor belt; 60. a spraying device; 61. a support frame; 62. a shower pipe; 621. a nozzle; 63. a collection tank; 64. a water storage tank; 65. a screw feeder; 651. filtering holes; 652. a baffle plate; 70. a mud-sand separating device; 71. a first cyclonic separator; 72. a second cyclonic separator; 73. a feed inlet; 74. a sand outlet end; 75. an overflow end; 80. a sedimentation tank; 90. a dehydration recovery mechanism; 91. a material vibrating plate; 911. filtering seams; 92. a water collecting tank; 93. a vibration motor; 100. a first delivery pipe; 110. a second delivery pipe; 120. a third delivery pipe; 130. a fourth delivery pipe; 140. and a fifth delivery pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A construction waste recycling system is shown in figure 1 and comprises a crusher 10, a magnetic separator 20, a separator 30, a screening machine 40, a spraying device 60, a silt and sand separating device 70, a sedimentation tank 80, a dehydration recycling mechanism 90 and a conveying mechanism, wherein the conveying mechanism comprises a first conveying belt 51 connected between the crusher 10 and the magnetic separator 20, a second conveying belt 52 connected between the magnetic separator 20 and the separator 30, a third conveying belt 53 connected between the separator 30 and the spraying device 60, a fourth conveying belt 54 connected between the spraying device 60 and the dehydration recycling mechanism 90 and a fifth conveying belt 55 connected between the dehydration recycling mechanism 90 and the screening machine. A first conveying pipe 100 for conveying mud-sand mixed liquid is arranged between the spraying device 60 and the mud-sand separating device 70, a second conveying pipe 110 for conveying fine sand is arranged between the mud-sand separating device 70 and the screening machine 40, and a third conveying pipe 120 for conveying slurry is arranged between the mud-sand separating device 70 and the sedimentation tank 80. A fourth delivery pipe 130 is arranged between the sedimentation tank 80 and the water storage tank 64, a fifth delivery pipe 140 is arranged between the dehydration recovery mechanism 90 and the sedimentation tank 80, and each delivery pipe is provided with a corresponding driving pump.
Referring to fig. 2 and 3, the spraying device 60 includes a support frame 61, a screw feeder 65 fixed on the support frame 61, a spraying pipe 62 disposed above the screw feeder 65, a collecting tank 63 located below the support frame 61, and a water storage tank 64 located on one side of the collecting tank 63, wherein a feed port 73 of the screw feeder 65 is located directly below a corresponding end portion of the third conveyor belt 53, and a discharge port of the screw feeder 65 is located directly above a corresponding end portion of the third conveyor belt 53. The side wall of the screw feeder 65 facing the collecting tank 63 is provided with a plurality of filtering holes 651, and the filtering holes 651 only allow muddy water and fine particles to pass through. Set up the opening with screw feeder 65 inner chamber intercommunication on the lateral wall that screw feeder 65 deviates from collecting pit 63, screw feeder 65's opening sets up along screw feeder 65's length direction, and two lateral walls of screw feeder 65's open-ended all upwards extend into two baffles 652. The spray pipe 62 is arranged in parallel with the opening of the screw feeder 65 and is located right above the opening, a plurality of nozzles 621 are sequentially arranged on the spray pipe 62 along the length direction, and the plurality of nozzles 621 are located between the two baffles 652. The storage tank 64 supplies clean water for spraying to the spray pipe 62, and the storage tank 64 receives the recovered water purified by the settling tank 80 through the fourth transfer pipe 130. A sand pump (not shown) is provided in the collecting tank 63, and an outlet of the sand pump is connected to one end of the first conveying pipe 100.
Referring to fig. 2 and 4, the silt separator 70 includes a first cyclone 71 and a second cyclone 72, which are devices for separating solid particles from suspended substances using the principle of centrifugal sedimentation. The cyclone separator body is composed of a cylinder and a cone, the cone is closer to the lower part than the cylinder, the cylinder part is shorter, the side wall of the cylinder part is provided with a feed inlet 73, the top of the cylinder is provided with an overflow end 75, the cone part is longer, and the cone part is gradually contracted from the cylinder to the cone outlet part to form a sand outlet 74. In this embodiment the first cyclonic separator 71 and the second cyclonic separator 72 are arranged side by side. The end of the first conveying pipe 100 far away from the collecting tank 63 is connected to the feeding hole 73 of the first cyclone separator 71, the overflow end 75 of the first cyclone separator 71 is communicated with the feeding hole 73 of the second cyclone separator 72, the overflow end 75 of the second cyclone separator 72 is connected with the third conveying pipe 120, and the sand outlet end 74 of the first cyclone separator 71 and the sand outlet end 74 of the second cyclone separator 72 are both connected with the second conveying pipe 110. The end of the second transport pipe 110 remote from the silt separating apparatus 70 is located directly above the fourth conveyor belt 54, and the opening of the second transport pipe 110 faces the fourth conveyor belt 54 downward.
Referring to fig. 5, the dewatering recovery mechanism 90 includes a material vibrating plate 91 disposed obliquely to the ground, and a water collecting tank 92 disposed below the material vibrating plate 91, wherein the end of the fourth conveyor belt 54 away from the spraying device 60 is located directly above the end with the high height of the material vibrating plate 91, and the end of the fifth conveyor belt 55 away from the screening machine 40 is located directly below the end with the low height of the material vibrating plate 91. The vibrating plate 91 is provided with a vibrating motor 93, the vibrating plate 91 is provided with a filter seam 911 for water to pass through, and the water collecting tank 92 is connected with the fifth conveying pipe 140.
Referring to fig. 6, the mouth of the sedimentation tank 80 is rectangular, the ends of the third delivery pipe 120 and the fifth delivery pipe connected to the sedimentation tank 80 are opened on the same side wall of the sedimentation tank 80 with short length, the fourth delivery pipe 130 is opened on the other side wall of the sedimentation tank 80 with short length, and the opening of the fourth delivery pipe 130 on the sedimentation tank 80 is located at the upper end of the sedimentation tank 80.
In the actual operation process, the construction waste sequentially passes through the crusher 10, the magnetic separator 20 and the separator 30, the construction waste is crushed, waste metals, wood chips and light impurities in the construction waste are separated, the rest construction waste enters the screw feeder 65 through the third conveyor belt 53, the screw feeder 65 carries the construction waste to do linear motion while turning over the construction waste, and the construction waste falls onto the fourth conveyor belt 54 after coming out of the screw feeder 65. The construction waste is washed by clean water sprayed from the upper nozzle 621 when in the screw feeder 65, soil attached to the construction waste is washed by the water and falls into the collection tank 63 along the filtering hole 651, part of the construction waste with fine particles also enters the collection tank 63 to be mixed with muddy water, the mixed liquid conveying belt mud-sand separating device 70 is used for separating mud and sand through the first conveying pipe 100, the muddy water is conveyed to the sedimentation tank 80 for purification, and the sand is conveyed to the fourth conveying belt 54 and is converged into the main part of the construction waste. The construction waste on the fourth conveyor belt 54 is transported to a dewatering recovery mechanism 90 for dewatering, the separated water is collected and transported to the sedimentation tank 80, and the dewatered construction waste is transported to the sieving machine 40 for sieving according to the size of particles. The settling tank 80 performs settling purification on the muddy water and the recovered water, and returns a part of the cleaner water to the storage tank 64 for reuse.
The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Claims (8)

1. The utility model provides a construction waste's recovery processing system, includes breaker (10), magnet separator (20), separating centrifuge (30), sieve separator (40) and transport mechanism, characterized by: still include spray set (60), silt particle separator (70), sedimentation tank (80), be equipped with first conveyer pipe (100) that are used for transmitting silt particle mixed liquid between spray set (60) and silt particle separator (70), be equipped with second conveyer pipe (110) that are used for transmitting fine sand between silt particle separator (70) and sieve separator (40), be equipped with third conveyer pipe (120) that are used for transmitting mud between silt particle separator (70) and sedimentation tank (80), transport mechanism loops through breaker (10), magnet separator (20), separating centrifuge (30), spray set (60) and sieve separator (40) with building rubbish.
2. The recycling system for construction waste as claimed in claim 1, wherein: spray set (60) include support frame (61), set up shower (62) above support frame (61), be located collection tank (63) of support frame (61) below, reservoir (64) to shower (62) water supply, be equipped with the silt pump in collection tank (63), the export of silt pump is connected with first conveyer pipe (100), be equipped with screw feeder (65) on support frame (61), screw feeder (65) have seted up a plurality of filtration pores (651) on the lateral wall towards collection tank (63), shower (62) and screw feeder's (65) length direction parallel arrangement, be equipped with a plurality of nozzles (621) in proper order along length direction on shower (62), screw feeder (65) set up the opening that communicates with screw feeder (65) inner chamber on the lateral wall towards shower (62), the opening of screw feeder (65) and shower (62) parallel arrangement and be in the shower (62) of shower (62) are in the opening of shower (65) Right below.
3. The construction waste recycling system according to claim 2, wherein: two side walls of the opening of the screw feeder (65) extend upwards to form two baffles (652), and the plurality of nozzles (621) are located between the two baffles (652).
4. The recycling system for construction waste as claimed in claim 1, wherein: the silt and sand separating device (70) comprises a first cyclone separator (71) and a second cyclone separator (72), wherein a feed inlet (73), a sand outlet (74) and an overflow end (75) are formed in the first cyclone separator (71) and the second cyclone separator (72), a first conveying pipe (100) is connected to the feed inlet (73) of the first cyclone separator (71), the overflow end (75) of the first cyclone separator (71) is communicated with the feed inlet (73) of the second cyclone separator (72), the sand outlet (74) of the first cyclone separator (71) and the sand outlet (74) of the second cyclone separator (72) are connected with a second conveying pipe (110), and the overflow end (75) of the second cyclone separator (72) is connected with a third conveying pipe (120).
5. The recycling system for construction waste as claimed in claim 1, wherein: a fourth delivery pipe (130) is arranged between the sedimentation tank (80) and the water storage tank (64), and the opening of the fourth delivery pipe (130) at the sedimentation tank (80) is arranged at the upper end of the sedimentation tank (80).
6. The construction waste recycling system according to claim 5, wherein: the mouth of the sedimentation tank (80) is rectangular, and the openings of the fourth conveying pipe (130) and the third conveying pipe (120) on the sedimentation tank (80) are respectively arranged on two side walls with short length of the sedimentation tank (80).
7. The recycling system for construction waste as claimed in claim 1, wherein: still include dehydration recovery mechanism (90), dehydration recovery mechanism (90) are in between spray set (60) and sieve separator (40), transport mechanism connects respectively between spray set (60) and dehydration recovery mechanism (90), between dehydration recovery mechanism (90) and sieve separator (40).
8. The recycling system for construction waste as claimed in claim 7, wherein: the dehydration recovery mechanism (90) comprises a vibration plate (91) inclined to the ground and a water collecting tank (92) located below the vibration plate (91), a vibration motor (93) is arranged on the vibration plate (91), a filter seam (911) for water to pass through is formed in the vibration plate (91), and one end of the vibration plate (91) with high height is close to one side of the spraying device (60).
CN201910887903.9A 2019-09-19 2019-09-19 Construction waste's recovery processing system Pending CN110665934A (en)

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CN114042725A (en) * 2021-11-05 2022-02-15 浙江宇博新材料有限公司 Recycled aggregate production system
CN114632798A (en) * 2022-03-18 2022-06-17 上海市政工程设计研究总院(集团)有限公司 Multistage pretreatment system and method for engineering muck

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