A construction waste treatment plant slurry treatment system

Abstract

The application discloses a kind of building waste treatment workshop mud processing system, the processing system can be building waste slag and separated into aggregate, coarse aggregate, fine aggregate, organic matter, filter cake and water etc.Six kinds of materials, the processing path in the processing system is interconnected, so that each material is separated for many times, ensure the purity of each material, the whole processing system process is clear, and the connection between each unit is close, and forms a complete closed loop processing chain.From slag pretreatment to the output of final product, each step is carefully designed, to ensure the processing efficiency and processing quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of construction waste treatment system, in particular to a construction waste treatment workshop mud treatment system. BACKGROUND

[0002] With the acceleration of urbanization, the annual production of construction waste and slag has reached an astonishing number, and its efficient resource treatment has become an urgent need for environmental protection and sustainable development. The current construction waste and slag treatment technology has the following bottlenecks: 1. Single separation dimension: traditional process relies on simple screening or hydrocyclone, which can only separate one or two products, and cannot realize fine separation of coarse / fine aggregate, organic matter and mud cake; 2. Low product quality: the purity of the separated material is not high enough to meet the application requirements of high-grade building materials; 3. Insufficient resource recovery rate: due to the lack of separation level, 30-40% of the available aggregate in the slag is discarded with the mud, causing resource waste. SUMMARY

[0003] Therefore, the present application provides a construction waste treatment workshop mud treatment system, which aims to realize one-time multi-level treatment of construction waste and slag.

[0004] The scheme provided by the present application includes:

[0005] A construction waste treatment workshop mud treatment system, characterized in that it comprises:

[0006] A slag pretreatment unit, a first separation unit, a second separation unit, a third separation unit and a cross-linking separation unit;

[0007] The slag pretreatment unit comprises, in order of treatment, a stirring tank, a drum stone washer, a residual mud pool and a three-layer vibrating screen, the three-layer vibrating screen comprising a first layer of screening mechanism for outputting a first material, a second layer of screening mechanism for outputting a second material and a third layer of screening mechanism for outputting a third material;

[0008] The first separation unit comprises a first conveyor, and the first conveyor is connected to the output end of the first layer of screening mechanism;

[0009] The second separation unit comprises, in order of treatment, a spiral sand washer, a wheel bucket sand washer, a coarse sand recovery machine and a second conveyor; the spiral sand washer is connected to the output end of the second layer of screening mechanism;

[0010] The third separation unit comprises, in order of treatment, a first circulating pool, a first cyclone and a pure mud pool; the first circulating pool is connected to the third layer of screening mechanism;

[0011] The cross-linking separation unit comprises a second circulating pool, a double-layer vibrating screen and a fine sand recovery machine; the input end of the second circulating pool is connected to the spiral sand washing machine and the coarse sand recovery machine, the output end of the second circulating pool is connected to the double-layer vibrating screen and the fine sand recovery machine respectively, the input end of the fine sand recovery machine is also connected to the output end of the first cyclone, and the output end of the fine sand recovery machine is connected to the pure mud pool.

[0012] As a further optional solution, the cross-linking separation unit further comprises a second cyclone, the input end of the second cyclone is connected to the second circulating pool, the output end of the second cyclone is connected to the double-layer vibrating screen, and the other output end of the second cyclone is connected to the wheel-bucket sand washing machine.

[0013] As a further optional solution, the second cyclone is provided with a plurality of cyclones in parallel.

[0014] As a further optional solution, the cross-linking separation unit further comprises a third cyclone, the input end of the third cyclone is connected to the second circulating pool, the output end of the third cyclone is connected to the fine sand recovery machine, and the other output end of the third cyclone is connected to the wheel-bucket sand washing machine.

[0015] As a further optional solution, the third cyclone is provided with a plurality of cyclones in series.

[0016] As a further optional solution, the cross-linking separation unit further comprises a fourth cyclone, the input end of the fourth cyclone is connected to the fine sand recovery machine, and one output end of the fourth cyclone is connected to the double-layer vibrating screen.

[0017] As a further optional solution, the cross-linking separation unit further comprises a sedimentation pool, the input end of the sedimentation pool is connected to the double-layer vibrating screen, one output end of the sedimentation pool is connected to the pure mud pool, and the other output end of the sedimentation pool is connected to a clean water pool.

[0018] As a further optional solution, the first cyclone is provided with a plurality of cyclones in series.

[0019] As a further optional solution, the construction waste pretreatment unit further comprises a slurry unloading platform for slurry.

[0020] As a further optional solution, the construction waste pretreatment unit further comprises a chain plate feeder, the output end of the chain plate feeder is connected to the drum stone washing machine; and one output end of the drum stone washing machine is connected to a third conveyor.

[0021] The construction waste treatment workshop slurry treatment system of the present application has at least the following beneficial effects relative to the prior art:

[0022] The processing system can separate the construction waste slag into six materials, i.e. aggregate, coarse aggregate, fine aggregate, organic matter, filter cake and clean water. The processing paths in the processing system are interconnected, so that each material is separated for multiple times to ensure the purity of each material. The whole processing system has clear flow and close connection between units, forming a complete closed-loop processing chain. From the slag pretreatment to the output of the final product, each step is carefully designed to ensure the processing efficiency and quality. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a top view of a construction waste processing plant slurry processing system according to an embodiment of the present application;

[0024] Figure 2 is a top view of a slag pretreatment unit according to an embodiment of the present application;

[0025] Figure 3 is a structural schematic view of a cross-linking separation unit according to an embodiment of the present application;

[0026] Figure 4 is a flow chart of a slag pretreatment unit according to an embodiment of the present application;

[0027] Figure 5 is a flow chart of a first separation unit, a second separation unit, a third separation unit and a cross-linking separation unit according to an embodiment of the present application;

[0028] In the figure: 100, slag pretreatment unit; 110, stirring tank; 120, drum stone washer; 130, residual mud total tank; 140, three-layer vibrating screen; 150, chain plate feeder; 160, third conveyor; 170, slurry unloading platform;

[0029] 200, first separation unit; 210, first conveyor;

[0030] 300, second separation unit; 310, spiral sand washer; 320, wheel bucket sand washer; 330, coarse sand recovery machine; 340, second conveyor;

[0031] 400, third separation unit; 410, first circulating tank; 420, first cyclone; 430, pure mud tank;

[0032] 500, cross-linking separation unit; 510, second circulating tank; 520, double-layer vibrating screen; 530, fine sand recovery machine; 540, second cyclone; 550, third cyclone; 560, fourth cyclone; 570, sedimentation tank. DETAILED DESCRIPTION

[0033] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0037] Reference Figures 1-5 An embodiment of the present application shows a building waste treatment plant slurry treatment system, which comprises a muck pretreatment unit 100, a first separation unit 200, a second separation unit 300, a third separation unit 400 and a cross-linking separation unit 500.

[0038] Among them, the treatment system can separate the building waste muck into six kinds of materials such as aggregate, coarse aggregate, fine aggregate, organic matter, filter cake and clean water; in the embodiment, the aggregate is like 40-100mm concrete block, brick, large rock; the coarse aggregate is like 10-40mm broken rock, gravel; the fine aggregate is like 0.075-10mm natural sand, machine-made sand, clean fine particles in muck; the filter cake is mainly clay, silt and colloidal particles with particle size less than 0.075mm; the organic matter is like wood chips and other slurry surface floating materials.

[0039] Regarding the pretreatment of the slag, refer to Figure 2 and Figure 4 The slag pretreatment unit 100 sequentially includes a mixing tank 110, a drum stone washing machine 120, a residual mud pool 130, and a three-layer vibrating screen 140 in a processing order, the three-layer vibrating screen 140 including a first layer screening mechanism for outputting a first material, a second layer screening mechanism for outputting a second material, and a third layer screening mechanism for outputting a third material.

[0040] The slag is pre-introduced into the mixing tank 110, and through hydraulic mixing and physical stirring, the slag becomes a fluid material state that is easy to control. Specifically, through high-pressure water gun spraying combined with mechanical stirring, clay lumps and hardened particles in the slag are broken up, and the wrapped impurities are released, the mixing ratio of water and slag is controlled (usually water to material ratio 1:3-1:5), and the mud with moderate fluidity (solid content 15-30%) is formed.

[0041] The mud formed in the mixing tank 110 is then introduced into the drum stone washing machine 120, and the aggregates in the mud are screened out by the drum stone washing machine 120, and the mud after the aggregates are screened out by the drum stone washing machine 120 is introduced into the residual mud pool 130. The residual mud pool 130 can store the mud formed by the slag, and the residual mud pool 130 can subsequently output the mud to the three-layer vibrating screen 140, which includes a first layer screening mechanism, a second layer screening mechanism, and a third layer screening mechanism. According to different screen meshes, the first material, the second material, and the third material can be screened out.

[0042] The first material is the aggregate; the second material mainly includes coarse aggregate, fine aggregate, organic matter, and a small amount of pure mud; and the third material mainly includes pure mud and a small amount of fine aggregate and a small amount of organic matter.

[0043] As shown in Figure 3 and Figure 5 The first material (aggregate) enters the first separation unit 200, and the first material is sent out by the first conveyor 210; in other words, the aggregate has two separation channels, one is separated from the drum stone washing machine 120, and the other is separated by the first layer screening mechanism of the three-layer vibrating screen 140 and output by the first separation unit 200.

[0044] As shown in Figure 3 and Figure 5As shown, the second material enters the second separation unit 300, and is first separated by the spiral sand washer 310, which can separate most of the mud in the second material, and the separated mud is transported into the second circulating pool 510; then the spiral sand washer 310 outputs the remaining material (mainly coarse aggregate, fine aggregate and organic matter) processed by it to the wheel bucket sand washer 320 for further separation, and then the coarse aggregate is recovered by the coarse sand recovery machine 330, and the coarse aggregate separated by the coarse sand recovery machine 330 is sent away by the second conveyor 340, so that the coarse aggregate is obtained.

[0045] As shown in Figure 3 and Figure 5 , the third material enters the third separation unit 400, first enters the first circulating pool 410, and then passes through the first cyclone 420 to separate the fine aggregate and organic matter in the third material, and then the remaining pure mud is introduced into the pure mud pool 430. The pure mud stored in the pure mud pool 430 can obtain a filter cake after pressure filtration treatment. In order to improve efficiency, the first cyclone 420 can be connected in series with multiple.

[0046] Among them, the materials separated in the second separation unit 300 and the third separation unit 400 will enter the cross-linking separation unit 500; specifically, the remaining material in the coarse sand recovery machine 330 except for the coarse aggregate is transported into the second circulating pool 510, and the sediment part in the second circulating pool 510 is transported to the fine sand recovery machine 530, and the floating part in the second circulating pool 510 is transported to the double-layer vibrating screen 520, wherein the sediment part in the second circulating pool 510 is mainly fine aggregate and pure mud, and the floating part is mainly organic matter and pure mud; the fine sand recovery machine 530 can separate the fine aggregate and the pure mud, and then transport the pure mud to the pure mud pool 430 and output the fine aggregate; the double-layer vibrating screen 520 can separate the organic matter and the pure mud, and then transport the pure mud to the pure mud pool 430 and output the organic matter;

[0047] In some preferred embodiments, in order to improve the purity of material separation, as shown in Figure 5 , the cross-linking separation unit 500 further comprises a second cyclone 540, the input end of the second cyclone 540 is connected to the second circulating pool 510, the output end of the second cyclone 540 is connected to the double-layer vibrating screen 520, and the other output end of the second cyclone 540 is connected to the wheel bucket sand washer 320. In order to improve efficiency, multiple second cyclones 540 can be connected in parallel.

[0048] The floating part of the second circulating pool 510 first enters the second cyclone 540 for separation, the second cyclone 540 can separate a small amount of fine aggregate and a small amount of coarse aggregate that may be contained, and transport the separated fine aggregate and coarse aggregate to the wheel bucket sand washer 320 for washing and grading, so as to ensure the separation effect of coarse aggregate in the second separation unit 300, and also facilitate the separation effect of the subsequent double-layer vibrating screen 520.

[0049] In some preferred embodiments, the cross-linking separation unit 500 further comprises a third cyclone 550, an input end of the third cyclone 550 is connected to the second circulating pool 510, an output end of the third cyclone 550 is connected to the fine sand recovery machine 530, and another output end of the third cyclone 550 is connected to the wheel bucket sand washer 320. In order to improve efficiency, a plurality of third cyclones 550 are connected in series.

[0050] The precipitated part of the second circulating pool 510 first enters the third cyclone 550 for separation, the third cyclone 550 can separate a small amount of coarse aggregate that may be contained, and transport the separated coarse aggregate to the wheel bucket sand washer 320, so as to ensure the separation effect of coarse aggregate in the second separation unit 300, and also facilitate the separation effect of the subsequent fine sand recovery machine 530.

[0051] In some preferred embodiments, the cross-linking separation unit 500 further comprises a fourth cyclone 560, an input end of the fourth cyclone 560 is connected to the fine sand recovery machine 530, and an output end of the fourth cyclone 560 is connected to the double-layer vibrating screen 520.

[0052] After the fine sand recovery machine 530 separates the pure mud, the remaining material may contain a small amount of organic matter in addition to fine aggregate, which is separated by the fourth cyclone 560, and the organic matter is separated and transported to the double-layer vibrating screen 520, so as to ensure the separation effect of the fine aggregate and the separation effect of the organic matter.

[0053] In some preferred embodiments, the cross-linking separation unit 500 further comprises a sedimentation pool 570, an input end of the sedimentation pool 570 is connected to the double-layer vibrating screen 520, an output end of the sedimentation pool 570 is connected to the pure mud pool 430, and another output end of the sedimentation pool 570 is connected to a clean water pool.

[0054] The pure mud separated by the double-layer vibrating screen 520 is first introduced into the sedimentation pool 570 for sedimentation separation, the separated clean water is introduced into the clean water pool, and the sedimented pure mud is introduced into the pure mud pool 430, so as to reduce the water content of the pure mud in the pure mud pool 430. Figure 1 As shown in the figure, the obtained clean water is transported to a fire pump house for fire-fighting purposes.

[0055] In some preferred embodiments, as shown in Figure 1 , Figure 2 and Figure 4 , the slag pretreatment unit 100 further comprises a slurry unloading platform 170 for slurry. The slurry unloading platform 170 can serve as a receiving hub for external slurry, which is slurry generated by construction sites, municipal engineering or other industrial activities, such as slurry generated by cast-in-place piles, rotary piles, trench wall excavation and protection slurry of underground continuous walls, etc. The slurry stored in the slurry unloading platform 170 can be transported to the slurry pool 130 by a slurry transport vehicle.

[0056] In some preferred embodiments, as shown in Figure 2 and Figure 4 , the slag pretreatment unit 100 further comprises a chain feeder 150, the output end of the chain feeder 150 is connected to the drum stone washer 120; and one output end of the drum stone washer 120 is connected to a third conveyor 160.

[0057] In this embodiment, the drum stone washer 120 is fed by both the slurry tank 110 and the chain feeder 150, which is essentially a staged pretreatment strategy designed for the complexity of slag composition. The chain feeder 150 directly processes large, low-mud slag, aiming to avoid large, hard objects from entering the slurry tank 110, causing blade wear or blockage, while reducing water consumption (no additional water is needed for stirring). The slurry tank 110 processes high-mud, caked slag, which is broken down into single particles by high-pressure water washing combined with mechanical stirring, releasing the wrapped impurities and forming a homogeneous slurry that can be pumped. In this way, the optimal pretreatment method is selected for different physical properties of slag, avoiding the efficiency loss caused by "one-size-fits-all"; saving water consumption, reducing equipment wear, while improving the aggregate regeneration rate and quality; adapting to the volatility of slag composition, ensuring continuous and stable operation of the production line. This design is particularly suitable for projects with complex slag sources (such as mixed construction waste, river silt, and engineering excavation soil), and the overall treatment cost can be reduced by 18-25%.

[0058] In summary, the present application provides a slurry treatment system for a construction waste treatment plant, which can separate construction waste slag into six materials: aggregate, coarse aggregate, fine aggregate, organic matter, filter cake and water. The treatment paths in the system are interconnected, so that each material is separated multiple times to ensure its purity. The entire treatment system has a clear flow and tight connection between units, forming a complete closed-loop treatment chain. From slag pretreatment to final product output, each step is carefully designed to ensure treatment efficiency and quality.

[0059] In the above embodiments, the description of each embodiment is focused on, and the part not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0060] The above only describes the preferred embodiments of the present application. It should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, which should also be considered as the protection scope of the present application.

Claims

1. A construction and demolition processing plant slurry treatment system, characterized by, The system comprises a slag pretreatment unit, a first separation unit, a second separation unit, a third separation unit and a cross-linking separation unit. The slag pretreatment unit comprises, in sequence according to the processing order, a stirring tank, a drum stone washer, a residual mud pool and a three-layer vibrating screen, the three-layer vibrating screen comprising a first layer screening mechanism for outputting a first material, a second layer screening mechanism for outputting a second material and a third layer screening mechanism for outputting a third material. The first separation unit comprises a first conveyor connected to the output end of the first layer screening mechanism. The second separation unit comprises, in sequence according to the processing order, a spiral sand washer, a wheel-bucket sand washer, a coarse sand recovery machine and a second conveyor; the spiral sand washer is connected to the output end of the second layer screening mechanism. The third separation unit comprises, in sequence according to the processing order, a first circulating pool, a first cyclone and a pure mud pool. The first circulating pool is connected to the third layer screening mechanism. The cross-linking separation unit comprises a second circulating pool, a double-layer vibrating screen and a fine sand recovery machine; the input end of the second circulating pool is connected to the spiral sand washer and the coarse sand recovery machine, the output end of the second circulating pool is connected to the double-layer vibrating screen and the fine sand recovery machine respectively, the input end of the fine sand recovery machine is also connected to the output end of the first cyclone, and the output end of the fine sand recovery machine is connected to the pure mud pool.

2. The building waste treatment plant mud treatment system according to claim 1, wherein: The cross-linking separation unit further comprises a second cyclone, the input end of the second cyclone is connected to the second circulating pool, the output end of the second cyclone is connected to the double-layer vibrating screen, and the other output end of the second cyclone is connected to the wheel-bucket sand washer.

3. The building waste treatment plant mud treatment system according to claim 2, wherein: A plurality of the second cyclones are connected in parallel.

4. The building waste treatment plant mud treatment system according to claim 2, wherein: The cross-linking separation unit further comprises a third cyclone, the input end of the third cyclone is connected to the second circulating pool, the output end of the third cyclone is connected to the fine sand recovery machine, and the other output end of the third cyclone is connected to the wheel-bucket sand washer.

5. The building waste treatment plant mud treatment system according to claim 4, wherein: A plurality of the third cyclones are connected in series.

6. The building waste treatment plant mud treatment system according to claim 4, wherein: The cross-linking separation unit further comprises a fourth cyclone, the input end of the fourth cyclone is connected to the fine sand recovery machine, and one output end of the fourth cyclone is connected to the double-layer vibrating screen.

7. The building waste treatment plant mud treatment system according to claim 6, wherein: The cross-linking separation unit further comprises a sedimentation tank, the input end of the sedimentation tank is connected to the double-layer vibrating screen, one output end of the sedimentation tank is connected to the pure mud pool, and the other output end of the sedimentation tank is connected to a clean water pool.

8. The building waste treatment plant mud treatment system according to claim 1, wherein: ​ The first cyclone is provided with a plurality of cyclones in series.

9. The construction and demolition waste processing plant slurry treatment system of claim 1, wherein: The muck pretreatment unit further comprises a slurry unloading platform for slurry.

10. The construction and demolition waste processing plant slurry treatment system of claim 1, wherein: The muck pretreatment unit further comprises a chain plate feeder, an output end of the chain plate feeder is connected with the drum stone washing machine, and an output end of the drum stone washing machine is connected with a third conveyor.

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