A white mud recycling and comprehensive utilization device

Abstract

This invention relates to the field of environmental protection technology, specifically disclosing a comprehensive utilization device for white mud recycling. It includes a dewatering mechanism and a screening mechanism. The screening mechanism separates the dewatered white mud into large and small particles, which are then conveyed to a crushing mechanism and a mixing mechanism, respectively. The crushing mechanism crushes the large particles into small particles of the required particle size and conveys the crushed white mud to the mixing mechanism. The mixing mechanism includes at least a first mixing cylinder and a second mixing cylinder. The mixing mechanism detects the properties of the mixed material using a detection component mounted on the conveying mechanism, and based on the detection results, feeds the small particles of white mud and the mixed material into the first or second mixing cylinder for mixing. The mixed white mud is then processed into a shape corresponding to the intended use by a molding die in a molding mechanism, thus enhancing the market adaptability and competitiveness of the white mud recycling device.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, and in particular to a device for the comprehensive recycling and utilization of white mud. Background Technology

[0002] White mud, an unavoidable solid waste generated during industrial production, primarily originates from industries such as papermaking, ceramics, and bauxite processing. Due to its high moisture content, fine particles, and a certain amount of organic matter, this waste exhibits a unique semi-fluid state, somewhere between mud and solid particles. With increasingly stringent environmental protection requirements and the growing awareness of resource recycling, people are gradually recognizing the enormous potential of white mud for resource utilization. White mud is rich in calcium, silicon, and aluminum, which give it the potential to be used as a building material, organic fertilizer, or adsorbent raw material. However, due to its extremely high initial moisture content (typically above 85%) and uneven particle size distribution, traditional treatment methods are insufficient to directly meet the requirements for white mud reuse. Therefore, to achieve effective resource utilization of white mud, new treatment technologies and methods must be developed to reduce its moisture content and improve its particle size distribution, enabling its better application in the production of building materials, organic fertilizers, or adsorbents. This approach not only reduces environmental pollution but also achieves resource recycling, bringing greater economic and environmental benefits to society.

[0003] The patent "Method for Using Paper Mill White Mud as Raw Material for Cement Production" (Publication No. CN1986472A, hereinafter referred to as Prior Art 1) discloses a method for producing cement using white mud. Prior Art 1 utilizes the waste heat from the exhaust gas of a cement vertical kiln to dry the white mud through a high-efficiency fluidized bed dryer, making the drying cost of the white mud lower than the price of limestone. Simultaneously, the key factor affecting cement quality is the residual alkali in the white mud, which is removed during the drying process. Furthermore, to develop a process formula for producing high-grade cement using white mud, the comprehensive recovery efficiency of the calcium carbonate resources from the white mud must reach over 90%.

[0004] Under existing technology and conditions, the utilization of white mud is typically limited to a single method. This means that a specific device or equipment can often only recycle and reuse white mud for a specific target product. However, in today's market environment, it becomes quite difficult for a company to survive in the competition if it limits itself to producing only one product. On the other hand, while using multiple different machines and equipment to process white mud can increase product diversity, this comes at the cost of a significant increase in costs. Summary of the Invention

[0005] In view of this, the present invention provides a white mud recycling and comprehensive utilization device to solve the problem that the existing white mud treatment devices have a single treatment method, which makes it difficult to flexibly adjust according to the physical characteristics and application requirements of white mud, resulting in white mud being used for only a single purpose and failing to fully realize its resource utilization potential.

[0006] This invention provides a white mud recycling and comprehensive utilization device, including a dewatering mechanism for dewatering white mud, and a screening mechanism connected to the dewatering mechanism. The screening mechanism separates the dewatered white mud into large-particle white mud and small-particle white mud, and conveys the large-particle white mud and small-particle white mud to a crushing mechanism and a mixing mechanism, respectively. The crushing mechanism crushes the large-particle white mud into small-particle white mud that meets the required particle size, and conveys the crushed white mud to the mixing mechanism. The mixing mechanism includes at least a first mixing cylinder and a second mixing cylinder. The mixing mechanism detects the properties of the mixed material through a detection component set on the conveying mechanism, and sends the small-particle white mud and the mixed material into the first mixing cylinder or the second mixing cylinder for mixing according to the detection results. The first mixing cylinder and / or the second mixing cylinder can perform mixing operations for the same or different target products. The white mud mixed by the mixing mechanism is processed into a shape corresponding to the intended use of the white mud by a molding die of a molding mechanism.

[0007] Preferably, the dewatering mechanism includes a housing and a dewatering chamber located inside the housing; the dewatering chamber is equipped with a rotatable spiral dewatering body; the rotating shaft of the spiral dewatering body is provided with a dewatering extrusion thread with a diameter decreasing from the feed end to the discharge end; a spiral groove for the passage of white mud is formed between the dewatering extrusion thread and the inner wall of the dewatering chamber; a crushing cutter is provided on the rotating shaft outside the discharge port of the dewatering chamber, and the crushing cutter performs the first crushing of the white mud output from the dewatering chamber.

[0008] Preferably, the screening mechanism includes a frame and a screening section mounted on the frame; the screening section includes a screen and a movable screening frame mounted on the screen; the movable screening frame is driven by a motor and slides based on both ends of the frame, and when sliding, the movable screening frame performs a second crushing and compression on the falling white mud, allowing the white mud to pass through the screen; the screening section is inclined, and the two sides of the screen are respectively provided with smaller screen holes and larger screen holes; wherein, the smaller screen holes are provided at the higher end of the screening section, and the larger screen holes are provided at the lower end of the screening section.

[0009] Preferably, the mixing mechanism includes a base and a multi-station platform movable on the base. The multi-station platform has at least two stations where the first mixing cylinder and the second mixing cylinder are respectively installed. The first mixing cylinder or the second mixing cylinder moves to a preset position via the multi-station platform to receive small particles of white mud from the screening mechanism and / or the crushing mechanism and mixed materials from the conveying mechanism, and mixes them in the first mixing cylinder or the second mixing cylinder.

[0010] Preferably, the conveying mechanism includes at least a first conveying path for conveying mixed materials and a second conveying path for conveying mixed white mud; the second conveying path is further provided with at least a first conveying branch and a second conveying branch; the second conveying path is provided with at least a diverter plate, which connects the second conveying path with the first conveying branch or the second conveying branch; the ends of the first conveying branch and the second conveying branch are provided with molding molds of different shapes.

[0011] Preferably, the mixing mechanism detects the properties of the mixed material using a detection component disposed on the conveying mechanism, including at least one of the following methods: detecting the hardness of the mixed material using a hardness tester after the first conveying path begins conveying operation; detecting the pH value of the mixed material using a pH meter after the first conveying path begins conveying operation; detecting the density of the mixed material using a weighing system after the first conveying path begins conveying operation; detecting the particle size of the mixed material using a profile sensor after the first conveying path begins conveying operation; and detecting the shape of the mixed material using a profile sensor after the first conveying path begins conveying operation.

[0012] Preferably, the step of feeding the small-particle white mud and the mixed material into the first mixing cylinder or the second mixing cylinder for mixing according to the test results includes: feeding the mixed material with higher hardness into the first mixing cylinder, feeding the mixed material with neutral to strongly alkaline properties into the first mixing cylinder, feeding the mixed material with higher density into the first mixing cylinder, feeding the mixed material with larger particle size into the first mixing cylinder, and feeding the mixed material with irregular shape into the first mixing cylinder; feeding the mixed material with lower hardness into the second mixing cylinder, feeding the mixed material with weak acidity to weak alkalinity into the second mixing cylinder, feeding the mixed material with lower density into the second mixing cylinder, feeding the mixed material with smaller particle size into the second mixing cylinder, and feeding the mixed material with regular shape into the second mixing cylinder.

[0013] Preferably, the white clay mixed by the mixing mechanism is processed by the molding mold of the molding mechanism into a shape corresponding to the use of the white clay, including at least one of the following methods: the molding mold can be processed into powder according to the use of the white clay mixed by the mixing mechanism; the molding mold can be processed into granules according to the use of the white clay mixed by the mixing mechanism; the molding mold can be processed into blocks according to the use of the white clay mixed by the mixing mechanism; the molding mold can be processed into plates according to the use of the white clay mixed by the mixing mechanism; the molding mold can be processed into strips according to the use of the white clay mixed by the mixing mechanism; the molding mold can be processed into hollow blocks according to the use of the white clay mixed by the mixing mechanism; the molding mold can be processed into porous blocks according to the use of the white clay mixed by the mixing mechanism.

[0014] Preferably, the end of the first conveying branch and / or the second conveying branch is provided with a molding die of at least one of the following shapes: powder, granules, block, plate, strip, hollow block, and porous block.

[0015] Preferably, the small-particle white mud has a particle size of less than or equal to 2 mm; the large-particle white mud has a particle size of greater than 2 mm; the smaller sieve aperture diameter is less than or equal to 2 mm; and the larger sieve aperture is greater than 2 mm and less than or equal to 10 mm.

[0016] The white mud recycling and comprehensive utilization device provided by this invention has the following beneficial effects:

[0017] In this invention, by setting up multiple mixing cylinders (such as a first mixing cylinder and a second mixing cylinder), differentiated mixing operations can be performed to meet different needs, producing a variety of target products. The system integrates five functional modules: dewatering, screening, crushing, mixing, and molding, replacing multiple independent devices with an assembly line design, thereby reducing overall equipment investment and operating costs. Each functional module can operate independently or collaboratively, dynamically adjusting the device's operating mode according to actual needs to improve equipment utilization. Automatic detection of material properties is achieved through detection components on the conveying mechanism, intelligently distributing white mud to the appropriate mixing cylinder, reducing human intervention. The automated detection and diversion mechanism improves processing efficiency and reduces the technical skill requirements for operators. By adjusting the screening, mixing, and molding mechanisms, production modes for different target products can be quickly switched, enabling the production of multiple formulas and target products, reducing equipment downtime. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0019] Figure 1 This is a schematic diagram of a white mud recycling and comprehensive utilization device;

[0020] Figure 2 This is a schematic diagram of the dewatering mechanism of a white mud recycling and comprehensive utilization device.

[0021] Figure 3 yes Figure 2 A partial structural diagram;

[0022] Figure 4 This is a cross-sectional structural diagram of the fragmentation mechanism;

[0023] Figure 5 This is a schematic diagram of the second conveying path;

[0024] Figure 6 This is a schematic diagram of the dewatering mechanism of a white mud recycling and comprehensive utilization device.

[0025] Figure 7 This is a schematic diagram of the screening mechanism of a white mud recycling and comprehensive utilization device.

[0026] Figure 8 This is another schematic diagram of the screening mechanism of a white mud recycling and comprehensive utilization device;

[0027] Parts and their numbers in the diagram:

[0028] 100-Dewatering mechanism, 110-Machine housing, 111-Dewatering chamber, 112-Spiral dewatering body, 113-Rotating shaft, 114-Feed end, 115-Discharge end, 116-Dewatering extrusion thread, 117-Spiral groove, 120-Crushing cutter; 131-Feed inlet, 132-Discharge outlet, 133-Drive device, 134-Nylon filter cloth, 141-Sealing plate, 142-Groove;

[0029] 200-Screening mechanism, 210-Frame, 211-Screening section, 212-Screen, 213-Mobile screening frame, 214-Screening plate;

[0030] 300-Pulverizing mechanism, 310-Pulverizing chamber, 320-Pulverizing cylinder, 321-Pulverizing hammer, 330-Drive motor, 341-White mud inlet, 342-White mud outlet;

[0031] 400 - Mixing mechanism, 410 - Base, 420 - Multi-station platform, 421 - First mixing cylinder, 422 - Second mixing cylinder;

[0032] 500 - Molding mechanism;

[0033] 600 - Conveying mechanism, 610 - First conveying path, 620 - Second conveying path, 621 - First conveying branch, 622 - Second conveying branch, 623 - Diverter plate, 624 - Third conveying branch. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, the element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Where there is no conflict, embodiments of the present invention and the various features thereof can be combined with each other, all of which are within the scope of protection of the present invention.

[0035] Example 1

[0036] Please see Figure 1 This invention provides a white mud recycling and comprehensive utilization device, which can effectively reprocess the white mud waste generated in the industrial production process, thereby converting it into at least two different types of recyclable materials.

[0037] In this embodiment, particular attention is paid to the reuse of recycled white mud in cement production and as a soil conditioner. Furthermore, with further development and application, the recycled white mud can also be used as an adsorbent and other materials for various other purposes, thereby greatly improving the comprehensive utilization rate of white mud, reducing environmental pollution, and achieving sustainable resource development.

[0038] This embodiment provides a white mud recycling and comprehensive utilization device, which includes a dewatering mechanism 100. Its main function is to dewater the white mud so that the water content of the white mud reaches a processable state.

[0039] Under normal circumstances, when the moisture content of white clay is between 70% and 85%, it exhibits a plastic state, very similar to moist soil. When the moisture content is between 65% and 70%, the white clay can be refined without agglomerating into large particles. If the moisture content is below 65%, the white clay becomes solid, similar to dry soil. Given that the processing steps for white clay in this embodiment include crushing and mixing, adjusting the moisture content to between 65% and 70% is most suitable for the processing conditions of this embodiment. This moisture content ensures the plasticity of the white clay during processing while avoiding agglomeration problems caused by excessive moisture content, thus allowing for smoother processing in subsequent steps.

[0040] Please see Figure 1 In this embodiment, a screening mechanism 200 is connected to the dewatering mechanism 100. The screening mechanism 200 further separates the dewatered white mud into large and small particles. After dewatering, the white mud enters the screening mechanism 200 to screen the particles by size. After screening, the screening mechanism 200 transports the large and small particles to different locations. Specifically, the large particles are transported to the crushing mechanism 300, while the small particles are transported to the mixing mechanism 400. The crushing mechanism 300 further crushes the large particles, transforming them into small particles that meet specific particle size requirements. After crushing, these small particles are then transported to the mixing mechanism 400 for further mixing to form a homogeneous mixture, completing the mixing step of the target mixture.

[0041] In this embodiment, the small-particle white mud refers to white mud particles of suitable size that can be directly added to the mixing device for mixing. These small-particle white mud particles typically have a diameter of no more than 2 mm, a size that ensures good uniformity during the mixing process. On the other hand, large-particle white mud refers to white mud particles that require further crushing to meet the mixing requirements. These large-particle white mud particles have a diameter greater than 2 mm but no more than 10 mm. This size limitation is to avoid particles that are too large, thereby affecting the efficiency and effectiveness of the subsequent crushing process.

[0042] In this embodiment, the mixing mechanism 400 consists of at least two main parts: a first mixing cylinder 421 and a second mixing cylinder 422. Each of these two mixing cylinders is responsible for processing different target products. The first mixing cylinder 421 is primarily responsible for mixing a specific target product (cement), while the second mixing cylinder 422 is used for mixing another target product (soil conditioner). With this arrangement, the mixing process for each specific target product is carried out independently. This means that the mixing of the materials and the white mud is separated by two mixing cylinders, ensuring consistency in the processing and avoiding interference between different materials during mixing. Furthermore, the independence of the processing effectively prevents any adverse side effects that may occur between different products, thus guaranteeing the quality and performance of the final product. This independent processing method not only improves production efficiency but also ensures that each product can be precisely processed according to its specific technological requirements.

[0043] Furthermore, the mixing mechanism 400 is responsible for mixing various raw materials according to a predetermined ratio to obtain uniformly mixed white mud. Since this embodiment only provides a comprehensive device for recycling, the types and proportions of materials used to mix the white mud and the mixed materials are not described in detail here.

[0044] After being mixed with other materials, the raw white clay is fed into a molding mechanism 500, which contains various types of molding dies. These dies are designed with different shapes and / or sizes depending on the end use of the white clay. Through the processing of the molding mechanism 500, the white clay is shaped into a specific form that matches its intended use, thus preparing it for subsequent applications.

[0045] Please see Figure 2 The dewatering mechanism 100 includes a housing 110 and a dewatering chamber 111 located inside the housing 110. The dewatering chamber 111 is provided with a rotatable spiral dewatering body 112. The rotating shaft 113 of the spiral dewatering body 112 is provided with a dewatering extrusion thread 116 whose diameter decreases from the feed end 114 to the discharge end 115. A spiral groove 117 for passing through white mud is formed between the dewatering extrusion thread 116 and the inner wall of the dewatering chamber 111. A crushing cutter 120 is provided on the rotating shaft 113 outside the discharge port 132 of the dewatering chamber 111. The crushing cutter 120 crushes the white mud output from the dewatering chamber 111 for the first time.

[0046] The dewatering mechanism 100 also includes an inlet 131 and an outlet 132. The inlet 131 is located on the housing 110 and communicates with the dewatering chamber 111. The spiral dewatering body 112 is connected to the drive device 133 via its rotating shaft 113. Driven by the drive device 133, the white mud entering the dewatering chamber 111 through the inlet 131 moves forward step by step along the spiral groove 117. The white mud is dewatered by being squeezed against the inner wall of the dewatering chamber 111 by the dewatering extrusion thread 116, so that the water in the white mud is discharged through the drainage hole at the bottom of the dewatering chamber 111. The dewatered white mud is discharged from the outlet 132 of the dewatering chamber 111. Because the white mud is dewatered to a moisture content of 65% to 70% in the dewatering mechanism 100, the white mud at this moisture content has plasticity during the processing, and the sticking problem caused by excessive moisture content is avoided. Therefore, when the white mud is discharged, since the white mud is in a compressed state in the dewatering chamber 111, there may be some sticking. Therefore, the white mud is crushed once by the crushing cutter 120, so that the white mud that may stick together is cut into pieces when discharged.

[0047] Please see Figure 3 Furthermore, a nylon filter cloth 134 is installed above the drainage hole at the bottom of the dewatering chamber 111. The nylon filter cloth 134 is made of nylon fiber, which has excellent wear resistance and tensile strength, and can maintain good filtration performance under high pressure. The nylon filter cloth 134 has high filtration accuracy and can effectively prevent white mud particles from being discharged through the drainage hole due to compression during dewatering, allowing only the wastewater squeezed out from the white mud to be discharged through the nylon filter cloth 134.

[0048] Please see Figure 1 and Figure 8In this embodiment, the screening mechanism 200 divides the screening process into two different areas, each corresponding to a screen with a different size of sieve aperture. Specifically, one area has smaller sieve apertures, while the other has larger sieve apertures. After the material passes through the dewatering mechanism 100 for dewatering, the white mud falls directly into the area with smaller sieve apertures in the screening mechanism 200. During this process, the moving screening frame 213, driven by a motor, slides frequently back and forth on the frame 210. This movement causes friction and contact between the falling white mud and the screening plate 214, thereby achieving a crushing effect. Simultaneously, the material may also fall directly onto the screen 212, where the screening plate 214 applies pressure to the white mud, forcing it to pass through the pores of the screen 212. Since the screening section 211 is set at an incline, when larger white mud particles cannot pass through the end with the smaller aperture, these particles slide along the screen 212 and are eventually discharged through the end with the larger aperture. This design not only improves screening efficiency but also ensures that particles of different sizes can be effectively separated and processed. The white mud screened by the screening mechanism 200 enters the mixing device or the crushing mechanism 300 through large and small sieve holes, respectively. The white mud crushed by the crushing mechanism 300 can then re-enter the mixing mechanism 400 for mixing. The movable screening frame 213 is connected to an external drive device via a drive shaft to drive the movable screening frame 213.

[0049] Please see Figure 7 and Figure 8 Furthermore, the movable screening frame 213, which is installed on the surface of the screen 212, can generate vibration during reciprocating motion, and the scraping of the white mud on the screen 212 by the screening plate 214 will also generate vibration. These vibrations can function as an effective vibration device. Its main function is to prevent the white mud from clogging the screen holes on the screen 212, thereby ensuring the smooth progress of the screening process.

[0050] Please see Figure 4In this embodiment, the shredding mechanism 300 mainly consists of a shredding chamber 310 and a shredding cylinder 320 installed within the shredding chamber. Multiple shredding hammers 321 are evenly distributed on the surface of the shredding cylinder 320. These hammers effectively shred the white clay entering the shredding chamber 310. To ensure shredding effect and efficiency, the shredding cylinder 320 can rotate relative to both sides of the shredding chamber 310. This rotation is powered by an external drive motor 330, which is connected to the shredding cylinder 320, ensuring stable and efficient operation. Furthermore, to facilitate material entry and exit, the top of the shredding chamber 310 is designated as a white clay inlet 341, while the bottom is designated as a white clay outlet 342. This design not only ensures smooth material flow but also facilitates subsequent processing steps. The white clay outlet 342 is directly connected to the mixing mechanism 400, which means that the crushed white clay can seamlessly enter the mixing stage, thereby improving the continuity and efficiency of the entire production process. This setup ensures that the white clay, after crushing, can quickly and continuously enter the next process, namely the mixing operation, thus avoiding potential waste and contamination during storage and transfer.

[0051] In this embodiment, if the particle size of the white mud meets the predetermined standard after screening, it indicates that the white mud has successfully passed at least two crushing steps. This treatment ensures that the particle size of the white mud meets the requirements of subsequent mixing processes, allowing it to be uniformly mixed with other ingredients, thereby guaranteeing the quality of the final product. However, if the particle size of the white mud after screening still fails to meet the specified standard, the white mud will be guided into the crushing mechanism 300 for a third crushing process. Through this multiple crushing method, it can be ensured that the particle size of the white mud meets the standard required for mixing with other ingredients, thereby ensuring the smooth progress of the mixing process and the consistency of the final product quality.

[0052] Please see Figure 5 The mixing mechanism 400 includes a base 410 and a multi-station platform 420 movable on the base 410. The multi-station platform 420 is provided with at least two stations respectively for the first mixing cylinder 421 and the second mixing cylinder 422. The first mixing cylinder 421 or the second mixing cylinder 422 is moved to a preset position through the multi-station platform 420 to receive small particles of white mud from the screening mechanism 200 and / or the crushing mechanism 300 and mixed materials from the conveying mechanism 600, and mixes them in the first mixing cylinder 421 or the second mixing cylinder 422.

[0053] In this embodiment, the first mixing cylinder 421 includes a mixing chamber and a stirring unit disposed inside the mixing chamber. The top of the mixing chamber is designed to be open, allowing the mixing cylinder to easily receive white mud and various mixed materials from the crushing mechanism 300 and the screening mechanism 200. To facilitate material input and output, the bottom of the mixing chamber is specially designed with a through hole connected to a conveying pipe. During mixing operations, this through hole is closed to prevent material leakage during the stirring process; when the mixed material needs to be transported to another location, the through hole is opened to allow the material to be smoothly transported through the conveying pipe. The stirring unit includes not only a spiral agitator but also a component powered by an external drive unit. In the actual processing, the operator adds the white mud and mixed materials into the mixing chamber and then activates the external drive unit to start the spiral agitator rotating. As the agitator rotates, the white mud and mixed materials are thoroughly mixed in the mixing chamber until the preset mixing time is reached. After this process is completed, the mixing operation is finished. At this point, the materials are fully and evenly mixed and can be used for the next step of processing or application. The first mixing cylinder 421 and the second mixing cylinder 422 are configured identically. The first mixing cylinder 421 and the second mixing cylinder 422 can be used to process different or the same target products.

[0054] Please see Figure 1 and Figure 6 The conveying mechanism 600 includes at least a first conveying path 610 for conveying mixed materials and a second conveying path 620 for conveying mixed white mud; the second conveying path 620 is also provided with at least a first conveying branch 621 and a second conveying branch 622; the second conveying path 620 is provided with at least a diverter plate 623, which connects the second conveying path 620 with the first conveying branch 621 or the second conveying branch 622; the ends of the first conveying branch 621 and the second conveying branch 622 are provided with molding dies of different shapes; furthermore, a third conveying branch 624 may also be provided.

[0055] In use, the mixed material is conveyed through the first conveying path 610 to the mixing mechanism 400, allowing it to mix with the white mud in the mixing mechanism 400. Two diverting plates 623 are provided, namely a first diverting plate and a second diverting plate. The first and second diverting plates are respectively disposed inside the guide rails on the second conveying path 620. When only one mixing drum is needed for mixing, the diverting plate 623 disposed inside the guide rails on the second conveying path 620 guides and diverts the material to the first conveying branch 621 or the second conveying branch 622. The diverting plate 623 moves to one side of the first conveying branch 621 or the second conveying branch 622, causing the material to be guided to the other side. The diverting plate 623 is moved by an external force applied by several diverting cylinders disposed outside the diverting plate 623.

[0056] Furthermore, a slider is connected to the end of the piston rod on the flow divider cylinder, and the other end of the slider is connected to the corresponding position of the flow divider plate. When the piston rod of the flow divider cylinder extends, it drags the slider and causes the corresponding position of the flow divider plate to be displaced. When multiple positions are displaced by different distances, a preset angle of movement is achieved.

[0057] In practical applications, there are two mixing drums, each performing different processing tasks. Specifically, the first mixing drum is primarily responsible for processing the target product, cement, while the second mixing drum is used to process another target product, soil conditioner. These two products cannot be mixed during processing because they have different chemical properties and uses. To ensure smooth processing, a dedicated conveying branch is designated for each product. That is, the cement product is conveyed through the first conveying branch 621, while the soil conditioner product is conveyed through the second conveying branch 622.

[0058] In industrial production, white mud contains a relatively high calcium content, especially calcium-containing minerals such as calcium carbonate, calcium sulfate, and calcium hydroxide. These calcium sources can be directly used as basic raw materials in the production of calcium-based products. Due to its high calcium content, white mud becomes a relatively inexpensive and abundant source of calcium, which is of considerable value to industrial production. Therefore, recycling and processing white mud into various calcium-based products is undoubtedly the most cost-effective option.

[0059] White mud can be transformed into various calcium compounds, such as calcium oxide (CaO), through high-temperature treatment or chemical reactions. This calcium oxide can be used in industries such as cement, steel, and environmental protection (e.g., wastewater treatment). Calcium hydroxide (Ca(OH)2) can be used in wastewater treatment, soil conditioners, construction, and disinfection products. Calcium carbonate (CaCO3) can be used in construction, ceramics, papermaking, and fertilizer products. Calcium sulfate (CasO4) can be used in gypsum and building materials.

[0060] For example, during the production process, if the target product is a first-type product (plaster), the second diverter plate is moved to a specific position using a diverter cylinder. This position ensures that the second conveying branch 622 is completely closed, thereby preventing the first-type product from passing through the second conveying path 620. In this way, all first-type products can only be conveyed through the pre-set first conveying branch 621, ensuring the correct diversion and processing of the products.

[0061] Correspondingly, when our target product changes to the second type of product (soil conditioner), the first diverter plate is moved by the diverter cylinder to a position that can completely close the first conveying branch 621. The purpose of this action is to ensure that the soil conditioner product transported on the second conveying path 620 can only be transported through the second conveying branch 622, thereby avoiding the mixing of soil conditioner and cement and ensuring the purity and quality of the soil conditioner product.

[0062] In today's ever-changing market, the processing equipment used for white mud recycling has undergone a comprehensive restructuring and improvement to better adapt to market demands. The original white mud recycling equipment had limitations in its design, only capable of recycling and converting white mud into a single type of product. However, in practical industrial applications, producing only one product is far from sufficient; this limitation restricts the company's flexibility and market competitiveness. Therefore, the restructured and improved white mud recycling and utilization equipment can now produce at least gypsum, soil conditioner, fertilizer, and other calcium-based products. Nevertheless, during production, workers sometimes confuse the mixing cylinders corresponding to different products or forget to adjust the mixing cylinders to suit the production requirements of different products, leading to incorrect cylinder matching. To solve this problem, at least one detection component is needed for accurate detection of the mixed materials. This detection can determine whether the mixed material is for producing gypsum, soil conditioner, or other calcium-based products. With such detection results, the mixing cylinders can be adjusted accordingly, ensuring that each product is mixed using the correct mixing cylinder, thereby improving production efficiency and product quality.

[0063] A detection area is provided at the starting path of the mixed material, and the detection components described below are all located in the detection area to detect the mixed material.

[0064] Inspection Interval Setting: Typically, a specific batch of mixed materials will continuously pass through the conveyor 600 for mixing. This means that only one inspection is needed during the mixing process of this batch of materials to ensure the matching of the mixed material with the mixing cylinder. Once the inspection is completed and the matching is achieved, no further inspection is required as the entire batch of materials continues to be mixed via the conveyor belt. Inspection is only required when the second batch of mixed materials enters the conveyor belt, ready for mixing, to ensure that the second batch of materials also matches its appropriate mixing cylinder, preventing the mixing of different mixing cylinders.

[0065] In this embodiment, the mixing mechanism 400 detects the properties of the mixed material using detection components mounted on the conveying mechanism 600. These detection methods include, but are not limited to, the following: First, after the first conveying path 610 begins conveying operations, a hardness tester can be used to detect the hardness characteristics of the mixed material. Generally, a dynamic indentation hardness tester is installed in the detection area. An indenter is used to apply a short-term load to the surface of the mixed material, and the loading depth is measured. The device automatically records the indentation depth or rebound speed. The material properties are determined based on the hardness data, and the detection results are stored.

[0066] The target product, Category I (gypsum), uses a mixture of limestone, sulfuric acid, clay, and other substances, with a hardness of approximately 1.5-2 on the Mohs scale. In contrast, the target product, Category II (soil conditioner), generally uses organic materials such as animal manure and plant residues, which are usually not specially treated during mixing and typically have a hardness of 3-7 on the Mohs scale.

[0067] Therefore, the mixed materials with higher hardness are classified as mixed materials of the second category of products, while those with lower hardness are classified as mixed materials of the first category of products.

[0068] Secondly, after the first conveying path 610 starts conveying operations, a pH meter can also be used to detect the acidity or alkalinity (pH value) of the mixed material; the acidity or alkalinity of the mixed material surface is detected by a contact probe in the detection area.

[0069] White clay is typically neutral to slightly acidic (pH range of 6.5-7.5). It is a material containing a relatively high amount of silicate minerals, and its own acidity or alkalinity has little impact on its properties. It is mainly used to provide calcium and other mineral components.

[0070] In the production of the first type of product (gypsum), the lime (quicklime / hydrated lime) in the mixture is an alkaline material (pH around 12). It significantly raises the pH during mixing, resulting in a strongly alkaline mixture. Sulfur is acidic (lower pH, ranging from 4 to 5), and when dissolved, it produces sulfuric acid, lowering the pH of the mixture. Clay, on the other hand, typically has a pH between 7 and 8, making it neutral or slightly alkaline, thus mitigating excessive acid-base fluctuations.

[0071] Therefore, the acidity or alkalinity of the mixture of the first type of product will be dominated by the strong alkalinity of lime. If the lime content is high, the pH of the mixture will be alkaline; while if the proportion of sulfur is high, the pH value may be slightly lower, but overall the acidity or alkalinity of the first mixture will be alkaline, with a pH value between 8 and 10.

[0072] The second type of product consists of a mixture of organic matter, including compost (such as animal manure and plant residues). The pH of animal manure varies depending on the animal species and its diet. Herbivorous animal manure (such as cattle, sheep, and horses) is typically neutral or slightly alkaline, with a pH range of approximately 7 to 8, because their diet mainly consists of grasses, which contain relatively high levels of alkaline substances such as calcium and potassium. Pig manure typically has a pH range between 6.5 and 7.5, making it more neutral. The pH of animal manure changes depending on the microorganisms decomposing the organic matter during composting. Composted manure generally tends towards neutral or slightly alkaline, usually between 7 and 8. This is because the composting process produces alkaline substances (such as hydrogen gas) that neutralize acidic substances.

[0073] Decaying organic matter (such as rotting plant residue) tends to be acidic, especially in the early stages of decomposition. This is because the decomposition process releases organic acids (such as acetic acid, lactic acid, humic acid, etc.), which lower the pH of the compost or decaying material, typically to between 5 and 6.

[0074] When animal manure and plant residue are mixed, their pH level is affected by both components: if the mixture contains more animal manure, especially from herbivores, the pH may tend towards neutral to slightly alkaline. If the mixture contains more plant residue, particularly from acidic plants (such as pine, conifers, and citrus), the pH may be more acidic. Therefore, the pH of the mixture will depend on the ratio of animal manure to plant residue and their individual acidity or alkalinity. Generally, the resulting pH will be between 6 and 7, which is neutral or slightly acidic.

[0075] Therefore, the pH range of the mixed materials for the first type of product is 8-10, which is alkaline; while the pH range of the mixed materials for the second type of product is 6-7, which is neutral or slightly acidic. Thus, the mixed materials with an alkaline pH are those for the first type of product, and the mixed materials with a neutral or slightly acidic pH are those for the second type of product.

[0076] Furthermore, after the first conveying path 610 begins conveying operations, the density can be automatically calculated by a weighing system combined with a volume measuring mechanism or a density tester.

[0077] The first type of product is a mixed material, assuming it is used in gypsum production, whose components may include gypsum ore, lime, or calcium hydroxide (Ca(OH)₂). 2) The density of gypsum rock is typically about 2.3 to 2.4 g / cm³. 3 The density of lime (calcium hydroxide) is approximately 2.2 g / cm³. 3 Their overall density will vary depending on the proportions of each component. Typically, the density of the mixture in the first type of product is approximately 1.8 to 2.3 g / cm³. 3 The specific values ​​vary depending on factors such as component ratios and humidity.

[0078] The second category of products consists of mixed materials, assuming they are used in the production of soil conditioners. The density of dried animal manure is approximately 0.6 to 0.8 g / cm³. 3 The density of plant residues (hay, twigs, grass, etc.) is approximately 0.3 to 1.0 g / cm³. 3 The specific density depends on the plant type and humidity. The density of humus or compost is typically 0.7 to 1.2 g / cm³. 3 This depends on its organic matter content. Typically, the density of the second type of mixed material is approximately 0.8 to 1.5 g / cm³. 3 between.

[0079] Therefore, the mixed materials with higher density are the mixed materials of the first type of product, and the mixed materials with lower density are the mixed materials of the second type of product.

[0080] Furthermore, after the first conveying path 610 begins conveying operations, a profile sensor is used to detect the particle size of the mixed material and to detect the shape characteristics of the mixed material.

[0081] In practical applications, one or more detection methods can be used simultaneously to achieve comprehensive testing of the properties of mixed materials. However, for economic reasons, usually only one detection method is selected. When testing mixed materials to distinguish between mixed materials of different types of products, the selection of a convenient and low-cost detection method requires comprehensive consideration of the following factors: equipment cost, testing difficulty, time efficiency, and accuracy. In practice, pH testing is the most convenient and cost-effective method. Mixed materials of type II products are usually neutral or weakly acidic (pH value approximately 6-7), while mixed materials of type I products are mostly alkaline (pH value approximately 8-10), showing a significant difference and clear test results. The testing cost is extremely low (pH meter), operation is simple, and no complex equipment is required, making it suitable for large-scale applications. Density testing can be an alternative method. The density of construction waste is significantly higher than that of organic fertilizers, and the testing method is simple (such as the water substitution method) and inexpensive. It does not require precise equipment and can quickly distinguish between high-density and low-density materials.

[0082] Particle size and shape detection are suitable for scenarios requiring precise grading, but there may be overlapping particle size ranges in mixtures, resulting in less than ideal separation. While hardness detection is effective, it usually requires separate particle separation, which is complex and unsuitable for large-scale applications.

[0083] Therefore, if only one detection method is set, it can be set to pH value detection or density detection; if multiple detection methods are required, it can be set to pH value detection and density detection, as well as the other detection methods mentioned above.

[0084] Based on the test results, the process of feeding the small-particle white mud and the mixed materials into the first mixing cylinder 421 or the second mixing cylinder 422 for mixing includes:

[0085] First, for mixtures with higher hardness, they are fed into the first mixing cylinder 421 for mixing. Similarly, alkaline mixtures, high-density mixtures, mixtures with larger particle sizes, and mixtures with irregular shapes are also fed into the first mixing cylinder 421 for mixing. This arrangement is to ensure that, in the first mixing cylinder 421, different detection methods can identify them as the same material, avoiding mixing.

[0086] On the other hand, mixed materials with low hardness, weakly neutral to weakly acidic, low density, small particle size, and regular shape will be fed into the second mixing cylinder 422 for mixing to ensure the quality and performance of the final mixture.

[0087] The white clay mixed by the mixing mechanism 400 is processed by the molding mechanism 500 into a shape corresponding to the intended use of the white clay, including at least one of the following methods:

[0088] The molding die can process the white clay mixed by the mixing mechanism 400 into powder according to its intended use. The powder particles are fine and easy to dissolve or mix. It can be used as a reaction medium or binder, such as gypsum powder, and can be used to manufacture gypsum board, gypsum plaster, and as an additive in cement manufacturing.

[0089] The molding die can process the white mud mixed by the mixing mechanism 400 into granules according to its intended use. The granular material has good flowability, is easy to transport and distribute evenly, and is suitable for automated spreading or filling to improve soil granular fertilizer.

[0090] The molding die can process the white mud mixed by the mixing mechanism 400 into blocks according to the intended use. These blocks have large volumes and good pressure resistance, making them suitable for applications requiring stability, such as solid bricks, landfill stabilization layers, and as building materials (e.g., gypsum board).

[0091] The molding die can be used to process the white clay mixed by the mixing mechanism 400 into a plate shape according to its intended use. The plate-shaped material has high flatness, and its strength and toughness are adjustable. It is suitable for cutting and splicing.

[0092] It can be used not only as decorative panels, heat insulation, and sound insulation materials (such as floor linings and wall panels), but also as furniture or packaging padding.

[0093] The molding die can be processed into strips according to the intended use of the white clay mixed by the mixing mechanism 400. Long strips are easy to arrange and splice, have high strength, and moderate flexibility. They can be used as model building materials, waterproofing materials, or sealing materials. The molding die can also be processed into hollow blocks according to the intended use of the white clay mixed by the mixing mechanism 400. Hollow blocks reduce weight for the same volume, improving thermal insulation or sound insulation. They are also easier to process into complex structures.

[0094] The molding die can be processed into porous blocks (such as honeycomb) according to the intended use of the white mud mixed by the mixing mechanism 400. These blocks have a high specific surface area, good air permeability and adsorption properties, making them suitable for lightweight structures. They can be used as adsorbents, catalyst carriers, etc.

[0095] In this embodiment, at least one forming mold is provided at the end of the first conveying branch 621 and / or the second conveying branch 622. This forming mold can be one or more shapes such as powder, granules, blocks, plates, strips, hollow blocks, and porous blocks. The provision of these forming molds allows the end of the conveying branch to perform corresponding forming processes on the materials as needed to meet different production requirements.

[0096] For example, powder molding dies can be used to press powdered materials into specific shapes; granular molding dies are suitable for further shaping granular materials; block, plate, and strip molding dies can be used to press materials into block, plate, or strip shapes; hollow block and porous block molding dies are suitable for producing materials with specific hollow or porous structures. Through such designs, the efficiency of material utilization and product quality can be significantly improved.

[0097] Example 2

[0098] Please see Figure 1 This invention provides a white mud recycling and comprehensive utilization device. Embodiment 1 describes the workflow and equipment relationships of this device. However, the dewatering and pre-compression time of the white mud was not determined. Therefore, this embodiment provides a calculation formula for white mud dewatering based on factors influencing white mud dewatering, applied to the dewatering mechanism 100 described in Embodiment 1:

[0099]

[0100] In the formula, T d Time required to dewater one cubic meter of white mud (in min / m) 3 ).

[0101] W0 represents the initial moisture content of the white mud. High moisture content white mud (80%-90%) mainly originates from white mud after the initial settling or filtration stage. It is commonly found in white mud that has not undergone effective dewatering treatment. The texture of the white mud is similar to a slurry, making it difficult to use directly and requiring thorough dewatering. In the preliminary calculation, the moisture content of the white mud is assumed to be 90%.

[0102] W t The target moisture content of the white mud after dewatering is specified. However, in the mixing process, a medium moisture content white mud (60%-80%) is required. This type of white mud undergoes preliminary mechanical dewatering and is suitable for modification or post-mixing processing. According to Example 1, the target moisture content of the white mud after dewatering is 70%.

[0103] (W0-W t The difference between the initial moisture content and the target moisture content represents the amount of water that needs to be removed. Therefore, W0-W t =20%.

[0104] s represents the proportion of solid matter in the white clay. The higher the solid content in the white clay, the lower the moisture content; therefore, the solid content of the white clay directly affects the dehydration time.

[0105] To further explain, white clay with a high solids content is "thicker." With a high solids content, the water in the white clay is more tightly bound to the solid particles, making it difficult to separate. This requires greater pressure or a longer time to expel the water during extrusion. Solids content also affects the formation of drainage channels; white clay with a high solids content has a denser internal structure, reducing the channels for water flow and lowering the dehydration rate. Even with low water content, reaching the target moisture content still requires more time.

[0106] The solid content in white mud varies depending on its source, typically ranging from 10% to 30%. The solids are mostly sediment from papermaking wastewater, primarily composed of inorganic substances (such as calcium carbonate) and small amounts of organic matter (fiber residue). In the preliminary calculation, a solid content of 20% is assumed in the white mud.

[0107] R is the dehydration rate (m). 3 The dewatering rate ( / min) refers to the rate at which the water content of each cubic meter of white mud decreases per unit time, representing the ideal dewatering rate. In practical applications, the ideal dewatering rate range for a spiral dewatering device is (6-12) L / min, i.e., (0.006-0.012) m³ / min. 3 / min; In the preliminary calculation, the ideal dehydration rate is taken as 0.01m. 3 / min.

[0108] K m The material characteristic factor considers the influence of physical properties such as particle size and viscosity of white mud on the dewatering rate. Other factors affecting dewatering efficiency include particle adhesion and organic matter content; for example, a loose particle structure allows for greater water flow during dewatering, resulting in higher compression dewatering efficiency, and is generally set at a lower value, between 0.5 and 0.7. Higher moisture content facilitates water removal, leading to a greater dewatering rate per unit time. Therefore, the material characteristic factor is set between 0.7 and 1.

[0109] K of actual materials m Value analysis:

[0110]

[0111]

[0112] Therefore, K m The value is typically between 0.5 and 1.0. In the preliminary calculation of this embodiment, the material property factor is taken as 0.8.

[0113] K eThe dehydration rate is corrected for environmental and equipment factors, such as temperature, pressure, and type of dehydration equipment. The theoretical efficiency provided by the equipment supplier is adjusted based on actual operating conditions, typically greater than 1 (good efficiency) or less than 1 (low efficiency). The dehydration rate in the dehydration mechanism 100 described in Example 1 is the ideal dehydration rate, without providing correction measures for temperature, pressure, etc., but the dehydration mechanism 100 only has a dehydration extrusion thread 116. Therefore, the environmental and equipment dehydration factor is taken as 0.95. Therefore, substituting the above value into the formula:

[0114]

[0115] Therefore, it takes approximately 2.6 minutes to dehydrate each cubic meter of white mud.

[0116] Furthermore, as mentioned in Example 1, if the moisture content of the white mud is very high when it enters the dewatering unit 100 during the white mud processing, it may adversely affect the extrusion and dewatering effect of the white mud. To address this issue, a sealing plate 141 is specially installed at the discharge port 132 inside the dewatering chamber 111.

[0117] The sealing duration of the sealing plate 141 also affects the dewatering effect of the white mud. Therefore, in this embodiment, the sealing duration of the sealing plate 141 is calculated using the following formula:

[0118]

[0119] In the formula, T p The estimated sealing and dehydration time of the sealing plate 141.

[0120] V 仓 This refers to the effective volume of the dewatering chamber 111 to hold the white mud. The larger the volume, the longer the extrusion time. Based on practical applications, the effective volume of the dewatering chamber 111 is approximately 0.5 m³. 3 .

[0121] ΔW represents the difference between the initial moisture content and the target moisture content, indicating the change between the initial and target moisture contents of the white mud. The greater the change in moisture content, the longer the extrusion time required for dewatering. Based on the above W0-W... t =20%, therefore ΔW = 20%.

[0122] R is the dehydration rate (m). 3 The dewatering rate (L / min) refers to the rate at which the water content of each cubic meter of white mud decreases per unit time, and is affected by equipment performance and operating conditions. In practical applications, the dewatering rate range of the spiral dewatering device is (6-12) L / min, i.e., (0.006-0.012) m / min. 3 / min; In the preliminary calculation, the dehydration rate is taken as 0.01m. 3 / min.

[0123] K f K is the extrusion coefficient, used to reflect the efficiency during the extrusion process. Different spiral structure designs and the properties of the white clay material (such as viscosity) will affect the extrusion efficiency. If the extrusion pressure of the equipment is high, K... f Take a value greater than 1; if the equipment's extrusion pressure is insufficient or the white clay is too soft, K f Take a value less than 1. Based on practical applications, the compression coefficient is taken as 1.6.

[0124] Therefore, substituting the above values ​​into the formula:

[0125]

[0126] Since the volume of the dehydration chamber 111 in this embodiment is 0.5m³ 3 Therefore, the maximum amount of white mud that enters the dehydration chamber 111 for the first time for sealing and extrusion is 0.5m. 3 Therefore, the sealing time for the white mud entering the dewatering chamber 111 for the first time during the sealing-type extrusion is (6.25 / 2) min = 3.125 min. Thus, when the white mud has a high moisture content, the sealing plate 141 needs to be closed for 3.125 min, or 187.5 s, during the first dewatering in the dewatering chamber 111 for sealing-type extrusion dewatering. This ensures that subsequent white mud receives sufficient and uniform extrusion pressure, guaranteeing dewatering efficiency and quality.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for the comprehensive utilization of white mud recycling, characterized in that, The system includes a dewatering mechanism (100) for dewatering white mud, and a screening mechanism (200) connected to the dewatering mechanism (100). The screening mechanism (200) is used to separate the dewatered white mud into large particles and small particles, and to convey the large particles and small particles to a crushing mechanism (300) and a mixing mechanism (400), respectively. The crushing mechanism (300) is used to crush the large particles into small particles that meet the required particle size, and to convey the crushed white mud to the mixing mechanism (400). The mixing mechanism (400) includes at least a first mixing cylinder (421) and a second mixing cylinder (422). The mixing mechanism (400) detects the properties of the mixed material through a detection component set on the conveying mechanism, and feeds the small-particle white mud and the mixed material into the first mixing cylinder (421) or the second mixing cylinder (422) for mixing according to the detection results. The first mixing cylinder (421) and / or the second mixing cylinder (422) can perform mixing operations for the same or different target products. The white clay mixed by the mixing mechanism (400) is processed into a shape corresponding to the use of the white clay by the molding mechanism (500) through the molding mold; The mixing mechanism (400) includes a base (410) and a multi-station platform (420) movable on the base (410). The multi-station platform (420) has at least two stations on which the first mixing cylinder (421) and the second mixing cylinder (422) are respectively installed. The first mixing cylinder (421) or the second mixing cylinder (422) moves to a preset position via the multi-station platform (420) to receive small particles of white mud from the screening mechanism (200) and / or the crushing mechanism (300) and mixed materials from the conveying mechanism, and mixes them in the first mixing cylinder (421) or the second mixing cylinder (422). The conveying mechanism includes at least a first conveying path (610) for conveying the mixed materials and a second conveying path (620) for conveying the mixed white mud. The second conveying path (620) is further provided with at least a first conveying branch (621) and a second conveying branch (622); the second conveying path (620) is provided with at least one diverter plate (623), the diverter plate (623) connecting the second conveying path (620) with the first conveying branch (621) or the second conveying branch (622); The ends of the first conveying branch (621) and the second conveying branch (622) are provided with molding dies of different shapes; The mixing mechanism (400) detects the properties of the mixed material by means of a detection component disposed on the conveying mechanism, including at least one of the following: After the first conveying path (610) starts conveying operation, the hardness of the mixed material is detected by a hardness tester, the pH value of the mixed material is detected by a pH meter, the density of the mixed material is detected by a weighing system, the particle size of the mixed material is detected by a profile sensor, and the shape of the mixed material is detected by a profile sensor after the first conveying path (610) starts conveying operation.

2. The white mud recycling and comprehensive utilization device according to claim 1, characterized in that, The dehydration mechanism (100) includes a housing (110) and a dehydration chamber (111) disposed inside the housing (110); the dehydration chamber (111) is provided with a rotatable spiral dehydration body (112). The rotating shaft (113) of the spiral dewatering body (112) is provided with a dewatering extrusion thread (116) whose diameter decreases from the feed end (114) to the discharge end (115); a spiral groove (117) for white mud to pass through is formed between the dewatering extrusion thread (116) and the inner wall of the dewatering chamber (111). The dewatering chamber (111) has a crushing tool (120) on the rotating shaft (113) outside the discharge port (132) of the dewatering chamber (111). The crushing tool (120) crushes the white mud output from the dewatering chamber (111) for the first time.

3. The white mud recycling and comprehensive utilization device according to claim 1, characterized in that, The screening mechanism (200) includes a frame (210) and a screening section (211) disposed on the frame (210); the screening section (211) includes a screen (212) and a movable screening frame (213) disposed on the screen (212). The mobile screening frame (213) is driven by a motor and slides based on both ends of the frame (210). When the mobile screening frame (213) slides, it crushes and squeezes the falling white mud a second time, so that the white mud passes through the screen (212). The sieving section (211) is inclined, and the two sides of the screen (212) are respectively provided with smaller screen holes and larger screen holes; The smaller sieve holes are located at the higher end of the sieve section (211), and the larger sieve holes are located at the lower end of the sieve section (211).

4. The white mud recycling and comprehensive utilization device according to claim 1, characterized in that, The step of feeding the small-particle white mud and mixed materials into the first mixing drum (421) or the second mixing drum (422) for mixing according to the test results includes: A mixture with high hardness is fed into the first mixing cylinder (421), a mixture with neutral to strong alkaline properties is fed into the first mixing cylinder (421), a mixture with high density is fed into the first mixing cylinder (421), a mixture with large particle size is fed into the first mixing cylinder (421), and a mixture with irregular shape is fed into the first mixing cylinder (421). The mixture with lower hardness is fed into the second mixing cylinder (422), the mixture with weak acidity to weak alkalinity is fed into the second mixing cylinder (422), the mixture with lower density is fed into the second mixing cylinder (422), the mixture with smaller particle size is fed into the second mixing cylinder (422), and the mixture with regular shape is fed into the second mixing cylinder (422).

5. The white mud recycling and comprehensive utilization device according to claim 1, characterized in that, The white clay mixed by the mixing mechanism (400) is processed by the molding mechanism (500) into a shape corresponding to the intended use of the white clay, including at least one of the following methods: The molding die can be processed into powder form according to the intended use of the white clay mixed by the mixing mechanism (400), the molding die can be processed into granules form according to the intended use of the white clay mixed by the mixing mechanism (400), the molding die can be processed into blocks form according to the intended use of the white clay mixed by the mixing mechanism (400), the molding die can be processed into plates form according to the intended use of the white clay mixed by the mixing mechanism (400), the molding die can be processed into strips form according to the intended use of the white clay mixed by the mixing mechanism (400), the molding die can be processed into hollow blocks form according to the intended use of the white clay mixed by the mixing mechanism (400), and the molding die can be processed into porous blocks according to the intended use of the white clay mixed by the mixing mechanism (400).

6. The white mud recycling and comprehensive utilization device according to claim 5, characterized in that, The end of the first conveying branch (621) and / or the second conveying branch (622) is provided with a molding die of at least one of the following shapes: powder, granules, block, plate, strip, hollow block, and porous block.

7. A white mud recycling and comprehensive utilization device according to claim 3, characterized in that, The particle size of the small-particle white mud is less than or equal to ; The particle size of the large-particle white mud is greater than ; The smaller sieve aperture diameter is less than or equal to ; The larger sieve aperture is greater than and less than or equal to .

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