A clinker processing screening and diversion device and method

Abstract

This invention discloses a clinker processing screening and diversion device and method, belonging to the technical field of screening devices. This solution achieves clear diversion of clinker according to particle size range by setting up multi-stage vibrating screens within the main body of the screening device. For clinker in the middle particle size range, a dedicated processing structure consisting of a diversion frame, a shaking component, and a layering component is introduced, allowing abnormal particles to be effectively processed before entering the main extrusion process. The layering component further separates the disintegrated material based on its density and aerodynamic characteristics through the synergistic effect of arc-shaped impact blocks and directional airflow. The synergistic arrangement of these structures allows normal clinker particles, abnormal agglomerated materials, and pulverized materials to be effectively distinguished and rationally guided, thereby reducing the proportion of abnormal materials entering subsequent main processes, improving the operational stability of the clinker grinding system, and significantly improving overall energy consumption and equipment operating conditions.

Description

Technical Field

[0001] This invention relates to the field of screening equipment technology, and in particular to a clinker processing screening and diversion device and method. Background Technology

[0002] Clinker is a key intermediate product in the cement production process. Its particle size distribution, physical state and structural stability directly affect the energy consumption level of the subsequent extrusion and grinding system. At present, multi-stage vibrating screens are commonly used in industrial sites to classify clinker by particle size and then introduce it into crushing, extrusion or grinding processes according to the screening results.

[0003] However, existing screening technologies mainly rely on the apparent particle size as the basis for judgment, making it difficult to identify abnormal particles with the same particle size but significantly different internal structures. Under actual working conditions, clinker in the middle particle size range is often mixed with physically agglomerated particles formed due to moisture and accumulation, as well as chemically changed particles with loose structure due to slight hydration or carbonization reactions. These abnormal particles are misjudged as qualified feed during the screening stage and directly enter the roller press.

[0004] The efficient operation of a roller press relies on a relatively uniform particle strength and stable density in the material bed. The incorporation of the aforementioned abnormal particles fundamentally disrupts this condition, triggering interconnected and progressively amplified energy deterioration effects. Physically agglomerated particles, held together only by weak physical forces, are the first to disintegrate in the initial stage of extrusion. Chemically altered particles, whose internal mineral phases have partially transformed into low-strength hydration or carbonization products, also preferentially break down and pulverize. These two types of particles form localized weak zones in the material bed, preventing the pressure applied by the roller press from being evenly transmitted to normal particles. A large amount of energy is ineffectively absorbed by the disintegration process in these weak zones. Simultaneously, the strength difference between abnormal and normal particles causes a sudden change in the stress on the roller surface, leading to dramatic energy depletion. Severe vibrations, even roller collisions, force the hydraulic system to frequently adjust the roller gap to maintain operation, generating a large amount of dynamic adjustment energy consumption. The vibration conditions further exacerbate the uneven stress on the material bed, forming a vicious cycle. In addition, the sticky and wet fine powder released from the collapse leaks from the edges of the rollers, forming backflow material and abnormally increasing the circulating load. On the other hand, it forms an arch bridge in the buffer bin, causing feeding interruption and forcing the equipment to start and stop frequently. The unit energy consumption of non-steady-state operation is much higher than that of continuous operation. The above process shows that the increase in energy consumption caused by abnormal particles is a systematic deterioration of the entire chain from the failure of energy transfer in the material bed and the dynamic fluctuation of the equipment to the continuity of material circulation and feeding. The links are coupled with each other and cannot be eliminated by increasing the throughput or adjusting the operating parameters.

[0005] Existing technologies lack a structured device that can specifically disintegrate and effectively separate the abnormal particles without damaging normal clinker particles, making it difficult to systematically solve the problem of increased energy consumption of roller presses caused by the mixing of abnormal particles from the feed end. Summary of the Invention

[0006] This invention provides a clinker processing screening and diversion device and method, which can solve the problem that in the existing technology, the clinker screening process is classified only based on the apparent particle size, which makes it difficult to identify and process abnormal clinker particles with the same particle size but different internal structures and mechanical properties. This leads to physically agglomerated particles or loosely structured clinker being mistakenly sent to the main extrusion or grinding process, thereby causing the energy consumption of the roller press to increase.

[0007] A clinker processing screening and diversion device includes: a screening device body, a vibrating screen assembly, a diversion frame, a dispersing assembly, and a stratification assembly. The vibrating screen assembly is installed inside the screening device body and is used to divide the clinker into large particle segment, medium particle size segment, and fine powder segment according to particle size. The diversion frame is located on one side of the screening device body and is used to receive the clinker in the medium particle size segment. The dispersing assembly is installed inside the diversion frame and includes a main rotating roller and a secondary rotating roller that mesh with each other and rotate at different speeds. The outer periphery of the main rotating roller and the secondary rotating roller is covered with an elastic sleeve to apply shear force to the clinker in the medium particle size segment to deagglomerate it, while avoiding the crushing of particles with normal hardness. The stratification assembly is located below the dispersing assembly and is used to separate the normal particles after deagglomeration from the powdered material.

[0008] Preferably, a conveyor belt is installed on one side of the main body of the screening device, and the conveyor belt is located on the upper side of the main body of the screening device.

[0009] Preferably, the vibrating screen assembly includes a first vibrating screen, a second vibrating screen, and a third vibrating screen arranged sequentially from top to bottom. The screen apertures of the first vibrating screen, the second vibrating screen, and the third vibrating screen decrease in size sequentially. The first vibrating screen is used to screen large particles, the second vibrating screen is used to screen medium-sized particles, and the third vibrating screen is used to screen fine powder.

[0010] Preferably, a transfer plate is installed on one side of the second vibrating screen, and the transfer plate is located on the upper side of the diverter.

[0011] Preferably, the scattering assembly includes a scattering collection frame, which is mounted on a diverter frame. A servo motor is mounted on the diverter frame, the output end of which is connected to a main rotating roller. The other end of the main rotating roller is rotatably connected to the diverter frame, and a main gear is mounted around the main rotating roller.

[0012] Preferably, the auxiliary rotating roller is rotatably connected to the diverter frame, and an auxiliary gear is installed around the auxiliary rotating roller. The auxiliary gear meshes with the main gear, and the number of teeth of the main gear is greater than the number of teeth of the auxiliary gear.

[0013] Preferably, a pair of inclined scrapers are installed on the diverter, and the pair of inclined scrapers respectively abut against the main rotating roller and the auxiliary rotating roller.

[0014] Preferably, the layering assembly includes a layering collection frame mounted on a diverter, the layering collection frame being disposed directly below the main rotating roller and the auxiliary rotating roller, and an arc-shaped impact block being installed inside the layering collection frame.

[0015] Preferably, the stratification assembly further includes a fan installed on the stratification collection frame, a recycling stratification frame is installed at one end of the stratification collection frame and on the side of the fan, and a guide plate installed on the diversion rack is provided on the lower side of the stratification collection frame.

[0016] The clinker processing screening and diversion method includes the following steps: S1: Feed the clinker into the main body of the screening device so that the clinker enters the vibrating screen assembly; S2: The clinker is screened by the vibrating screen assembly and divided into large particle size segment, medium particle size segment and fine powder segment according to particle size; S3: The clinker with intermediate particle size obtained from screening is introduced into the diversion rack; S4: The shaking component applies a shearing action to the clinker in the middle particle size range that enters the diverter, causing the agglomerated clinker to deagglomerate, while avoiding the breakage of clinker particles with normal hardness. S5: Allow the clinker processed by the shaking component to enter the layered component located below the shaking component under the action of gravity; S6: Separate the deagglomerated clinker through the layered component, separating normal particles from pulverized materials and exporting them separately.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This solution achieves clear separation of clinker according to particle size range by setting up multi-stage vibrating screens in the main body of the screening device. For clinker in the middle particle size range, a special processing structure consisting of a diverter, a shaking component, and a stratification component is introduced. This allows abnormal particles to be effectively processed before entering the main extrusion process. The shaking component, through the main rotating roller and the auxiliary rotating roller with a speed difference and their elastic sleeve structure, applies selective shearing and kneading action to physically agglomerated particles and loosely structured particles without damaging normal clinker particles, thereby achieving deagglomeration and pulverization. The stratification component, through the synergistic action of arc-shaped impact blocks and directional airflow, further separates the disintegrated material according to the density and aerodynamic characteristics of the material. The synergistic arrangement of the above structures allows normal clinker particles, abnormal agglomerated materials, and pulverized materials to be effectively distinguished and rationally guided, thereby reducing the proportion of abnormal materials entering the subsequent main process, improving the operational stability of the clinker grinding system, and significantly improving overall energy consumption and equipment operating conditions. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the screening device provided by the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the main body of the diversion frame provided by the present invention; Figure 3 This is a three-dimensional structural diagram of the main body of the vibrating screen assembly provided by the present invention; Figure 4 A schematic diagram of the three-dimensional structure of the disassembled main body provided by the present invention; Figure 5 This is a schematic diagram of the main structure of the shaking component provided by the present invention; Figure 6 A schematic diagram of the main structure of the bottom side of the present invention; Figure 7 A schematic diagram of the main structure of the layered component provided by the present invention; Figure 8 A schematic diagram of the side main structure of the layered component provided by the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Screening device main body; 2. Vibrating screen assembly; 3. Diverter frame; 4. Shaking assembly; 5. Layering assembly; 11. Conveyor belt; 21. First vibrating screen; 22. Second vibrating screen; 23. Third vibrating screen; 24. Transfer plate; 41. Shaking and collecting frame; 42. Servo motor; 43. Main rotating roller; 44. Auxiliary rotating roller; 45. Main gear; 46. Auxiliary gear; 47. Inclined scraper; 51. Layering collecting frame; 52. Arc-shaped impact block; 53. Fan; 54. Recycling layering frame; 55. Guide plate. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] like Figures 1 to 5 As shown in the figure, an embodiment of the present invention provides a clinker processing screening and diversion device, comprising: a screening device body 1, a vibrating screen assembly 2, a diversion frame 3, a dispersing assembly 4, and a stratification assembly 5. The vibrating screen assembly 2 is installed inside the screening device body 1 and is used to divide the clinker into a large particle segment, an intermediate particle size segment, and a fine powder segment according to particle size. The diversion frame 3 is disposed on one side of the screening device body 1 and is used to receive the clinker in the intermediate particle size segment. The dispersing assembly 4 is installed inside the diversion frame 3 and includes a main rotating roller 43 and an auxiliary rotating roller 44 that mesh with each other and rotate at different speeds. The outer periphery of the main rotating roller 43 and the auxiliary rotating roller 44 is covered with an elastic sleeve, which is used to apply shear force to the clinker in the intermediate particle size segment to deagglomerate it, while avoiding the crushing of normal hardness particles. The stratification assembly 5 is disposed below the dispersing assembly 4 and is used to separate the normal particles after deagglomeration treatment from the powdered material.

[0022] like Figure 1As shown, a conveyor belt 11 is installed on one side of the main body 1 of the screening device, and the conveyor belt 11 is located on the upper side of the main body 1 of the screening device.

[0023] A conveyor belt 11 is installed on one side of the main body 1 of the screening device, and the conveyor belt 11 is located on the upper side of the main body 1 of the screening device. The conveyor belt 11 serves as the first feeding structure for clinker entering the screening system, and is used to continuously and uniformly transport clinker from the clinker storage area or upstream conveying equipment to the vibrating screen assembly 2 inside the main body 1 of the screening device, thereby providing stable and controllable feeding conditions for subsequent screening and diversion processing.

[0024] like Figure 4 As shown, the vibrating screen assembly 2 includes a first vibrating screen 21, a second vibrating screen 22, and a third vibrating screen 23 arranged sequentially from top to bottom. The screen apertures of the first vibrating screen 21, the second vibrating screen 22, and the third vibrating screen 23 decrease sequentially. The first vibrating screen 21 is used to screen large particles, the second vibrating screen 22 is used to screen medium-sized particles, and the third vibrating screen 23 is used to screen fine powder.

[0025] The vibrating screen assembly 2 includes a first vibrating screen 21, a second vibrating screen 22, and a third vibrating screen 23 arranged sequentially from top to bottom. The screen apertures of the first vibrating screen 21, the second vibrating screen 22, and the third vibrating screen 23 decrease sequentially from top to bottom, thereby forming a multi-stage progressive clinker particle size grading structure.

[0026] The screen aperture of the first vibrating screen 21 is set to be greater than 40mm, which is used to screen clinker particles with a particle size greater than 40mm. Clinker in this particle size range is usually large pieces of material that have not been fully crushed. If it enters the subsequent grinding system, it will significantly increase the equipment load. Therefore, by prioritizing separation through the first vibrating screen 21, it can be guided to the crushing process for separate processing, thereby avoiding adverse effects on the subsequent screening and grinding processes.

[0027] The screen aperture of the second vibrating screen 22 is set to 2 to 40 mm. It is used to screen clinker particles in the middle particle size range. This particle size range of clinker is the main feed range of roller press or other extrusion grinding equipment. However, in the actual production process, this range is often mixed with physical agglomerates or local pulverized lumps formed due to moisture, accumulation or environmental changes. Although the apparent particle size meets the feed requirements, the internal structure and mechanical properties have changed.

[0028] By concentrating the clinker of this particle size range for screening by the second vibrating screen 22 and guiding it to the subsequent shaking component 4 and layering component 5 for targeted processing, abnormal materials can be effectively prevented from directly entering the main extrusion process.

[0029] The third vibrating screen 23 has a screen aperture of less than 2mm, used for screening fine powder clinker. This fine powder clinker has a small particle size and a large specific surface area, making it difficult to effectively transmit pressure under extrusion conditions. Directly feeding it into the roller press not only makes it difficult to form an effective cake, but also leads to energy waste and a decrease in system efficiency. Therefore, separating clinker smaller than 2mm in advance by using the third vibrating screen 23 and allowing it to bypass the roller press and directly enter the subsequent grinding process helps to reduce the unit energy consumption of the system and improve the overall operational stability.

[0030] By setting up a multi-stage vibrating screen with clearly defined particle size ranges, the clinker can be rationally divided according to its particle size characteristics and process requirements before entering subsequent processing steps. This not only improves screening efficiency and grading accuracy, but also provides a clear and stable material source for the dispersing of agglomerated materials and the stratification of pulverized materials, thus better adapting to the working conditions of clinker physical state fluctuations in actual industrial production.

[0031] A material transfer plate 24 is installed on one side of the second vibrating screen 22, and the material transfer plate 24 is located on the upper side of the diversion frame 3.

[0032] like Figures 5 to 8 As shown, the scattering component 4 includes a scattering collection frame 41, which is mounted on a diverter frame 3. A servo motor 42 is mounted on the diverter frame 3. The output end of the servo motor 42 is connected to the main rotating roller 43. The other end of the main rotating roller 43 is rotatably connected to the diverter frame 3, and a main gear 45 is mounted around the main rotating roller 43.

[0033] The auxiliary rotating roller 44 is rotatably connected to the diverter 3, and an auxiliary gear 46 is installed around the auxiliary rotating roller 44. The auxiliary gear 46 meshes with the main gear 45, and the number of teeth of the main gear 45 is greater than the number of teeth of the auxiliary gear 46.

[0034] A pair of inclined scrapers 47 are installed on the diverter 3, and the pair of inclined scrapers 47 abut against the main rotating roller 43 and the auxiliary rotating roller 44 respectively.

[0035] The second vibrating screen 22 has a transfer plate 24 installed on one side. The transfer plate 24 is set on the upper side of the diversion frame 3. The clinker of the middle particle size range obtained by the second vibrating screen 22 falls onto the transfer plate 24 under the action of gravity, and is guided into the interior of the diversion frame 3 under the guidance of the transfer plate 24, thereby realizing the path separation of the clinker of this particle size range from the clinker of other particle size ranges.

[0036] This structural design allows clinker with a particle size range of 2–40 mm, but which may contain abnormal particles, to be centrally fed into the subsequent dispersing unit, preventing it from directly entering the main extrusion process and causing problems such as increased energy consumption and equipment vibration.

[0037] It should be noted that, under actual cement production conditions, clinker in the 2-40mm particle size range is usually not in a single form, but rather exists in a mixture of three different material states. One type is normal clinker particles with a dense structure and stable mineral phases; The second type is physical agglomerates formed by fine or small particles during storage, transportation, or stacking due to moisture absorption, through water film action, fine powder filling, or mechanical interlocking. Thirdly, some fine powder or loosely structured clinker particles undergo slight hydration or carbonization reactions with moisture or carbon dioxide in the air after being exposed to a humid and hot environment for a long time, resulting in chemically altered particles.

[0038] Although the latter two types of particles meet the particle size requirements of 2 to 40 mm in appearance, their internal structure and mechanical properties have changed significantly.

[0039] The scattering assembly 4 includes a scattering collection frame 41, which is installed on the diversion frame 3 to receive and temporarily store the clinker material introduced by the transfer plate 24. A servo motor 42 is installed on the diversion frame 3, and the output end of the servo motor 42 is connected to the main rotating roller 43. The other end of the main rotating roller 43 is rotatably connected to the diversion frame 3, so that the main rotating roller 43 can rotate stably under the drive of the servo motor 42. A main gear 45 is installed around the main rotating roller 43 to transmit power to the auxiliary rotating roller 44.

[0040] The auxiliary rotating roller 44 is rotatably connected to the diverter 3, and an auxiliary gear 46 is installed around the auxiliary rotating roller 44. The auxiliary gear 46 meshes with the main gear 45. Since the number of teeth of the main gear 45 is greater than the number of teeth of the auxiliary gear 46, when the main rotating roller 43 rotates, the auxiliary rotating roller 44 will rotate synchronously at different angular velocities, thereby forming a stable relative speed difference between the two rotating rollers.

[0041] In this embodiment, elastic sleeves are provided on the outer surfaces of both the main rotating roller 43 and the auxiliary rotating roller 44. Compared with the rigid metal surface, the elastic sleeves have a certain deformation capability. When the clinker enters between the main rotating roller 43 and the auxiliary rotating roller 44, the elastic sleeves can apply a buffering effect to the material, so that the force is a gradual loading form rather than an instantaneous rigid impact.

[0042] Meanwhile, due to the relative speed difference between the main rotating roller 43 and the auxiliary rotating roller 44, the material in the clamping area will be continuously subjected to relative shearing, kneading and tumbling.

[0043] For normal clinker particles, the main mineral phases are tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetracalcium aluminoferrite. These mineral phases form a dense polycrystalline structure after high-temperature calcination at around 1450℃ and subsequent cooling during the clinker firing process.

[0044] Tricalcium silicate, which is the dominant mineral phase in clinker, usually accounts for 50% to 70% of the total mass of clinker. Its crystal structure is compact, its Mohs hardness is about 6, and its uniaxial compressive strength is usually above 80 MPa. Dicalcium silicate, as a minor mineral phase, also has high crystal structure stability; the intermediate phases composed of tricalcium aluminate and tetracalcium aluminoferrite fill the spaces between calcium silicate mineral grains, further enhancing the overall mechanical properties of the particles.

[0045] Since the intergranular bonding force of the above-mentioned mineral phases is a mixed bonding form of ionic and covalent bonds with high bond energy, the compressive strength and shear strength of normal clinker particles are much higher than the level of flexible force applied by the shaking component 4. Therefore, under the clamping and kneading action of the elastic sleeve, normal clinker particles mainly roll or shift with the rotating roller and are not easily broken.

[0046] As for physically agglomerated particles, their essence is that multiple original clinker fine particles form a water film on the particle surface due to increased environmental humidity during storage, transportation or stacking. The liquid bridging force generated by the water film causes initial adhesion between adjacent particles. Subsequently, fine powder fills the gaps between particles to form mechanical interlocking, and finally multiple particles aggregate into agglomerates with a larger apparent particle size.

[0047] The binding force between particles within this type of aggregate is mainly maintained by van der Waals forces, capillary forces of liquid bridges, and mechanical interlocking forces between particles. The magnitude of these forces is usually in the range of 10^-3 to 10^-1 Newtons, which is several orders of magnitude lower than the chemical bonding force between mineral phases such as tricalcium silicate.

[0048] Therefore, under the continuous shearing and kneading action applied by the shaking component 4, the weak physical forces at the particle contact interface of the physically agglomerated particles are gradually overcome, and the agglomerates gradually disintegrate along the particle boundaries, restoring to the original fine particle state.

[0049] For particles that undergo chemical changes, the formation process is as follows: free calcium oxide in clinker undergoes a hydration reaction after contacting moisture in a humid and hot environment to generate calcium hydroxide. At the same time, some calcium hydroxide further undergoes a carbonation reaction with carbon dioxide in the air to generate calcium carbonate. In addition, tricalcium silicate and tricalcium aluminate in clinker may also undergo an initial hydration reaction under the condition of trace moisture, generating hydration products such as hydrated calcium silicate gel and ettringite on the particle surface and in the internal microcracks.

[0050] Compared to the original clinker mineral phase, the above reaction products have significantly looser crystal or gel structures. For example, the Mohs hardness of calcium hydroxide is only about 2 to 3, the Mohs hardness of calcium carbonate is about 3, and the hydrated calcium silicate gel has an amorphous structure and even lower mechanical strength, all of which are far lower than the original mineral phases such as tricalcium silicate, which have a Mohs hardness of about 6.

[0051] Meanwhile, the formation of hydration reaction products is often accompanied by volume expansion, which generates microcracks and pores inside the particles, reducing the overall equivalent density of the particles and significantly increasing their brittleness.

[0052] Therefore, under the same shearing and kneading conditions applied by the shaking component 4, the particles that have undergone chemical changes are more likely to pulverize or fragment along the weak bonding interface between the reaction product layer and the unreacted core because the mechanical strength and fracture toughness of their hydration and carbonization product layers are much lower than those of the normal mineral phase.

[0053] Therefore, the level of flexible force applied by the dispersing component 4 is designed to be higher than the maintenance threshold of van der Waals forces and liquid bridge forces in physically agglomerated particles, and higher than the fracture strength of the hydration and carbonization product layers in chemically changed particles, but lower than the crushing threshold corresponding to the chemical bonding force between the main mineral phases such as tricalcium silicate and dicalcium silicate in normal clinker particles. This enables selective processing of different material states, allowing normal particles to pass through intact while abnormal particles are effectively disintegrated.

[0054] It should be further explained that physically agglomerated particles and chemically changed particles are difficult to be effectively processed in conventional screening processes. The fundamental reason is that the screening process only classifies particles based on their apparent size and cannot identify their internal structure and mechanical state. Meanwhile, the vibrating screen primarily applies throwing and displacement forces to the material, lacking continuous, directional relative shearing force, making it difficult to disrupt the weakly bonded structure within abnormal particles. Therefore, these abnormal particles are often misjudged as acceptable particle size materials during the screening stage.

[0055] The diversion frame 3 is also equipped with a pair of inclined scrapers 47. The pair of inclined scrapers 47 abut against the main rotating roller 43 and the auxiliary rotating roller 44 respectively. The inclined scrapers 47 scrape the surface of the rotating roller in real time during the rotation of the rotating roller, which can prevent wet fine powder or adhesive materials from adhering to the surface of the rotating roller and forming a coating layer, thus avoiding a decrease in shearing effect. The scraped material falls into the shaking and collecting frame 41 under the action of gravity and enters the subsequent layering process.

[0056] Through the coordinated arrangement of the aforementioned material transfer plate 24 and the shaking component 4, abnormal particles formed due to physical agglomeration or chemical changes within the 2-40mm particle size range can be effectively disintegrated and separated before entering the roller press. This avoids abnormal materials from directly entering the main extrusion process, which could lead to problems such as uneven cake, increased energy consumption, equipment vibration, and system instability. Consequently, the operational stability and energy utilization efficiency of the entire clinker grinding system are significantly improved.

[0057] The layering assembly 5 includes a layering collection frame 51 mounted on the diverter 3. The layering collection frame 51 is located directly below the main rotating roller 43 and the auxiliary rotating roller 44. An arc-shaped impact block 52 is installed inside the layering collection frame 51.

[0058] The stratification component 5 also includes a fan 53 installed on the stratification collection frame 51, a recycling stratification frame 54 installed at one end of the stratification collection frame 51 and on the side of the fan 53, and a guide plate 55 installed on the diversion rack 3 is provided on the lower side of the stratification collection frame 51.

[0059] The layering component 5 includes a layering collection frame 51 installed on the diversion frame 3. The layering collection frame 51 is located directly below the main rotating roller 43 and the auxiliary rotating roller 44 and is used to receive the clinker material that falls after being processed by the shaking component 4.

[0060] Since the material has been subjected to shearing, kneading and tumbling in the shaking component 4, some of the material that is temporarily sticky due to moisture or fine powder adhering to the surface may re-aggregate during the operation of the rotating roller. Therefore, further state correction and separation processing is required in the layering component 5.

[0061] An arc-shaped impact block 52 is installed inside the layered collection frame 51. The arc-shaped impact block 52 is set on the material falling path. Its arc-shaped structure is used to apply directional impact and dispersion to the falling material without forming a rigid impact.

[0062] When the material processed by the shaking component 4 falls onto the arc-shaped impact block 52, the loose blocky powder formed due to residual moisture or surface adhesion is easily disintegrated again under the impact, thus returning to a dispersed state. For normal clinker particles with dense structure and high strength, the arc-shaped impact block 52 can buffer and protect the normal clinker particles, preventing unnecessary breakage caused by instantaneous stress concentration.

[0063] The layering assembly 5 also includes a fan 53 mounted on the layered collection frame 51, which is used to form a stable and controllable directional airflow inside the layered collection frame 51.

[0064] After being corrected by the arc-shaped impact block 52, the material enters the airflow zone during its descent. Different materials respond differently to the airflow due to differences in particle size, density, and internal structure, resulting in significant differences in their motion trajectories.

[0065] Normal clinker particles with dense structure and large mass are difficult to be deflected by airflow under the action of inertia and their own weight, and still fall along the direction of gravity; while particles formed by physical or chemical changes are more easily affected by airflow and deflected due to their loose internal structure, low equivalent density or pulverized state.

[0066] A recycling layering frame 54 is installed at one end of the layered collection frame 51 and on the side of the blower 53. The material carried by the airflow enters the recycling layering frame 54.

[0067] Because of the differences in formation mechanisms between physically changed particles and chemically changed particles, their internal structure density, air-containing porosity, and equivalent mass are different. Under the same airflow conditions, they experience different aerodynamic forces and motion resistance, thus forming a further natural distribution within the recovery stratification frame 54.

[0068] Chemically altered particles with relatively smaller mass and looser structure are more likely to enter the far region with the airflow, while physically aggregated particles with relatively larger mass and weak physical forces are more likely to settle in the near region, thus achieving secondary stratification based on mass and aerodynamic characteristics within the recovery stratification frame 54.

[0069] It should be added that the particles that undergo chemical changes mainly originate from some free oxides or microcrack-rich areas in the clinker. They are formed by surface or local reactions with moisture or carbon dioxide in the air during storage or transfer. These reactions usually generate hydration or carbonization products on the particle surface or in the internal pores, transforming the originally dense clinker mineral structure into a loose structural layer containing a large number of micropores.

[0070] Because the chemical reaction products have a more porous crystal structure than the original clinker minerals, and contain air or moisture, the overall equivalent density of the particles is reduced, and the mass per unit volume is significantly reduced. At the same time, the interfacial bonding force between the reaction product layer and the unreacted core is weak, and they are prone to peeling or pulverization under the action of external force or airflow. As a result, even if the macroscopic size of these particles remains unchanged or increases slightly, the actual mass does not increase accordingly, and may even decrease.

[0071] Based on the above structural characteristics, the chemically changed particles have a higher stress response under the action of airflow. They are more easily carried by the airflow generated by the fan 53 in the stratification component 5 and are enriched in the recovery stratification frame 54 on the side away from the fan inlet. The particles formed by physical agglomeration are still composed of the original clinker particles inside, with a relatively high equivalent density. Under the same airflow conditions, they are more likely to settle prematurely, thus forming further spatial stratification with the chemically changed particles in the recovery stratification frame 54.

[0072] The lower side of the layered collection frame 51 is provided with a guide plate 55 installed on the diversion frame 3, which is used to guide the normal clinker particles that are not carried by the airflow, so that they can enter the subsequent extrusion or grinding process stably.

[0073] Through the secondary disintegration and buffering protection of the arc-shaped impact block 52, and the gas-solid coupling stratification mechanism formed by the fan 53 and the recycling stratification frame 54, the material processed by the shaking component 4 can achieve multi-stage separation according to its physical state and aerodynamic characteristics. This effectively distinguishes normal clinker particles from abnormal particles formed by physical or chemical changes, reduces the proportion of abnormal materials entering the subsequent main process, and helps to improve the system's operational stability and reduce overall energy consumption.

[0074] The clinker processing screening and diversion method includes the following steps: S1: Feed the clinker into the main body 1 of the screening device, so that the clinker enters the vibrating screen assembly 2; S2: The clinker is screened by the vibrating screen assembly 2 and divided into large particle segment, medium particle segment and fine powder segment according to particle size; S3: The clinker with intermediate particle size obtained from screening is introduced into the diversion rack 3; S4: The shaking component 4 applies a shearing action to the clinker in the middle particle size section that enters the diverter 3, causing the agglomerated clinker to deagglomerate, while avoiding the breakage of clinker particles with normal hardness. S5: The clinker processed by the shaking component 4 is allowed to enter the layering component 5 located below the shaking component 4 under the action of gravity; S6: The clinker after deagglomeration is separated by the layered component 5, and the normal particles and pulverized materials are separated and exported separately.

[0075] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A clinker processing screening and diversion device, characterized in that, include: Screening device body (1); Vibrating screen assembly (2), which is installed inside the main body (1) of the screening device, is used to divide the clinker into large particle segment, medium particle segment and fine powder segment according to particle size; Diverter (3), which is set on one side of the main body (1) of the screening device, is used to receive clinker in the middle particle size range; The dispersing assembly (4) is installed in the diverter (3) and includes a main rotating roller (43) and a secondary rotating roller (44) that mesh with each other and have different rotation speeds. The outer periphery of the main rotating roller (43) and the secondary rotating roller (44) is covered with an elastic sleeve, which is used to apply shear force to the clinker in the middle particle size range to deagglomerate it, while avoiding the crushing of particles with normal hardness. A layering component (5) is disposed below the dispersing component (4) and is used to separate normal particles after deagglomeration from pulverized materials.

2. The clinker processing screening and diversion device as described in claim 1, characterized in that, A conveyor belt (11) is installed on one side of the main body (1) of the screening device, and the conveyor belt (11) is located on the upper side of the main body (1) of the screening device.

3. The clinker processing screening and diversion device as described in claim 1, characterized in that, The vibrating screen assembly (2) includes a first vibrating screen (21), a second vibrating screen (22) and a third vibrating screen (23) arranged sequentially from top to bottom. The screen apertures of the first vibrating screen (21), the second vibrating screen (22) and the third vibrating screen (23) decrease sequentially. The first vibrating screen (21) is used to screen large particle segments, the second vibrating screen (22) is used to screen medium particle size segments, and the third vibrating screen (23) is used to screen fine powder segments.

4. The clinker processing screening and diversion device as described in claim 3, characterized in that, A transfer plate (24) is installed on one side of the second vibrating screen (22), and the transfer plate (24) is set on the upper side of the diversion frame (3).

5. The clinker processing screening and diversion device as described in claim 1, characterized in that, The scattering component (4) includes a scattering collection frame (41), which is mounted on a diverter frame (3). A servo motor (42) is mounted on the diverter frame (3). The output end of the servo motor (42) is connected to the main rotating roller (43). The other end of the main rotating roller (43) is rotatably connected to the diverter frame (3). A main gear (45) is mounted around the main rotating roller (43).

6. The clinker processing screening and diversion device as described in claim 5, characterized in that, The auxiliary rotating roller (44) is rotatably connected to the diverter (3), and an auxiliary gear (46) is installed around the auxiliary rotating roller (44). The auxiliary gear (46) meshes with the main gear (45), and the number of teeth of the main gear (45) is greater than the number of teeth of the auxiliary gear (46).

7. The clinker processing screening and diversion device as described in claim 1, characterized in that, A pair of inclined scrapers (47) are installed on the diversion frame (3), and the pair of inclined scrapers (47) abut against the main rotating roller (43) and the auxiliary rotating roller (44) respectively.

8. The clinker processing screening and diversion device as described in claim 1, characterized in that, The layering component (5) includes a layering collection frame (51) installed on the diverter (3). The layering collection frame (51) is located directly below the main rotating roller (43) and the auxiliary rotating roller (44). An arc-shaped impact block (52) is installed inside the layering collection frame (51).

9. The clinker processing screening and diversion device as described in claim 8, characterized in that, The layering component (5) also includes a fan (53) installed on the layering collection frame (51), a recycling layering frame (54) is installed at one end of the layering collection frame (51) and on the side of the fan (53), and a guide plate (55) installed on the diversion rack (3) is provided on the lower side of the layering collection frame (51).

10. A method for screening and diverting clinker, characterized in that, The clinker processing screening and diversion device, as described in any one of claims 1 to 9, comprises the following steps: S1: Feed the clinker into the main body (1) of the screening device so that the clinker enters the vibrating screen assembly (2). S2: The clinker is screened by the vibrating screen assembly (2) and the clinker is divided into large particle segment, medium particle segment and fine powder segment according to particle size; S3: The clinker of intermediate particle size obtained by screening is introduced into the diversion rack (3); S4: Use the shaking component (4) to apply shearing action to the clinker in the middle particle size section that enters the diversion rack (3), so that the agglomerated clinker in it will deagglomerate, while avoiding the crushing of clinker particles with normal hardness. S5: The clinker processed by the shaking component (4) enters the layering component (5) located below the shaking component (4) under the action of gravity. S6: The clinker after depolymerization is separated by the layered component (5), and the normal particles and pulverized materials are separated and exported separately.

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