Coal ash mixing and proportioning device

Abstract

The invention provides a fly ash mixing and proportioning device, and relates to the technical field of material mixing. Comprising a mixing pipeline, a fly ash bin, a cement bin and a water bin, the mixing pipeline is an annular pipeline which is connected end to end, the fly ash bin and the cement bin are respectively used for containing fly ash and cement, and the fly ash bin and the cement bin are respectively communicated with the mixing pipeline through a plurality of conveying pipelines which are arranged along the direction of the mixing pipeline and are inclined downwards; a plurality of conveying pipelines are arranged in the coal ash bin, so that materials in the coal ash bin and the cement bin are respectively conveyed to the mixing pipeline through the plurality of conveying pipelines, the water bin is communicated with the mixing pipeline through a water conveying pipeline, a plurality of impellers are arranged in the mixing pipeline in a penetrating manner and are used for driving a mixture in the mixing pipeline to circularly flow in the mixing pipeline, and a discharge hole is formed in the mixing pipeline. According to the invention, the agglomeration phenomenon can be prevented when fly ash is mixed with water and cement, and the fluid mixture can be mixed more uniformly.

Description

Technical Field

[0001] The present invention relates to the technical field of material mixing, and particularly relates to a fly ash mixing ratio device. Background Art

[0002] Currently, coal is still an important resource. The main application method of coal is to provide heat energy by combustion. After coal combustion, a large amount of fly ash will be formed. A large amount of fly ash is a solid waste that harms the environment.

[0003] Regarding the problem of solid waste caused by fly ash accumulation, the existing solution is to mix fly ash, cement and water to prepare building materials for reuse. However, in the case of multiple solid components, agglomeration and uneven mixing are likely to occur during the mixing process. Summary of the Invention

[0004] Embodiments of the present invention provide a fly ash mixing ratio device, which can quickly and evenly mix fly ash, cement and water. The technical solution of the present invention is as follows: A fly ash mixing ratio device includes a mixing pipeline, a fly ash bin, a cement bin and a water bin; The mixing pipeline is a circular pipeline connected end to end. The fly ash bin and the cement bin are respectively used to contain fly ash and cement. The fly ash bin and the cement bin are respectively communicated with the mixing pipeline through a plurality of downwardly inclined feeding pipelines arranged along the direction of the mixing pipeline, so that the materials in the fly ash bin and the cement bin are respectively input into the mixing pipeline through the plurality of feeding pipelines. The water bin is communicated with the mixing pipeline through a water conveying pipeline. A plurality of impellers are arranged in the mixing pipeline, and the impellers are used to drive the mixture in the mixing pipeline to circulate in the mixing pipeline. The mixing pipeline is provided with a discharge port.

[0005] Optionally, the fly ash bin is used to contain fly ash after carbon removal treatment, and the carbon removal treatment includes: Placing the fly ash in a carbon removal bin to make the fly ash fill the carbon removal bin; wherein, the fly ash includes porous carbon particles; Sealing the carbon removal bin and performing a vacuum pumping treatment on the carbon removal bin; Injecting a liquid into the carbon removal bin in a vacuum negative pressure environment to make the liquid fill the porous carbon particles; Performing ultrasonic treatment on the fly ash in the carbon removal bin to cause cavitation effect of the liquid filled in the porous carbon particles; Taking out the fly ash after cavitation effect from the carbon removal bin and performing drying treatment.

[0006] Optionally, the outer shape of the mixing pipeline is rectangular, and the impeller penetrates into the mixing pipeline at the intersection of adjacent sides of the mixing pipeline, so that the impeller provides power along the direction of one side of the mixing pipeline.

[0007] Optionally, the outer shape of the mixing pipeline is a rounded rectangle.

[0008] Optionally, a feeding pump is installed on the feeding pipeline, and the feeding pump is used to provide the power for feeding.

[0009] Optionally, a weighing device and a valve are installed on the fly ash silo, the cement silo and the water silo.

[0010] Optionally, fly ash is contained in a material device, the liquid is contained in a liquid storage device, and both the material device and the liquid storage device are communicated with the decarbonization bin through valves; The vacuum pumping treatment includes: pumping vacuum into the decarbonization bin so that the internal pressure is 10 -5 ~10 -3 Pa; The liquid includes an oxidant.

[0011] Optionally, the drying treatment is realized by a drying device, and the drying device includes a crushing unit, a preheating unit and a hot air dispersion unit; The crushing unit is used to crush the fly ash infiltrated with liquid into a plurality of blocks, the preheating unit is used to preheat the plurality of crushed fly ash blocks, and the hot air dispersion unit is used to heat and disperse the preheated fly ash blocks.

[0012] Optionally, the crushing unit includes a vertically upward crushing cylinder, and a net-shaped cutting member is installed on the inner wall of the crushing cylinder, and the net-shaped cutting member is used to divide the fly ash infiltrated with liquid passing through it into a plurality of blocks; The preheating unit is communicated with the crushing unit. The preheating unit includes a preheating cylinder. One end of the preheating cylinder is communicated with one end of the crushing cylinder. The other end of the preheating cylinder is a tapered end, and the internal cross-sectional area of the tapered end gradually becomes smaller in the direction of its opening. At least one hot air nozzle penetrates into the bottom of the preheating cylinder, and the hot air nozzle is used to spray high-temperature air; The hot air dispersion unit includes a dispersion bin. The opening at the tapered end of the preheating cylinder penetrates into a position near the top of the side of the dispersion bin. An air outlet is provided in a part of the top of the dispersion bin away from the opening at the tapered end. A filter screen is installed at the air outlet, and a circulation pipeline is connected to the air outlet. One end of the circulation pipeline away from the air outlet is connected to the hot air nozzle. An aerodynamic device is installed on the circulation pipeline, and the aerodynamic device is used to drive the air flow to circulate between the circulation pipeline, the hot air nozzle and the dispersion bin. A heating device is installed on the dispersion bin to provide heat inside the dispersion bin.

[0013] Optionally, the tapered end of the preheating cylinder is inclined towards the dispersion bin.

[0014] The present invention has at least the following beneficial effects compared with the prior art: In the present invention, the water in the water tank is introduced into the mixing pipeline through the water delivery pipeline. The impeller in the mixing pipeline is driven to rotate by an external driving motor to provide power for the water in the mixing pipeline, so that the water circulates in a clockwise or counterclockwise direction. After the water flows directionally in the mixing pipeline, according to Bernoulli's principle, the pressure inside it will decrease. The materials in the fly ash bin and the cement bin enter the mixing pipeline through multiple feeding pipelines under the action of gravity and pressure difference. After entering the mixing pipeline, the pressure will decrease, and the materials will disperse and fall into the water under the pressure difference. The water in the mixing pipeline continues to flow, and the materials continuously enter the water through the feeding pipelines, preventing the large agglomeration of the materials. In addition, in addition to providing fluid power, the impeller can also stir the materials to make the fluid mixture more uniform.

[0015] In the present invention, by performing carbon removal treatment on fly ash, the porous carbon particles in the fly ash can be removed, avoiding the influence of the porous carbon particles on the formation of the fluid mixture with cement and water, and saving water consumption and increasing the strength of the fluid mixture after hardening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a schematic structural diagram of a fly ash mixing ratio device provided by an embodiment of the present invention; Figure 2 is a schematic structural diagram of a carbon removal device provided by an embodiment of the present invention; Figure 3It is a schematic structural diagram of a drying device provided by an embodiment of the present invention.

[0018] In the figure: 101 - mixing pipeline; 102 - fly ash bin; 103 - cement bin; 104 - material conveying pipeline; 105 - water bin; 106 - water conveying pipeline; 107 - impeller; 1 - decarbonization bin; 2 - vacuum pumping device; 3 - ultrasonic emission device; 4 - material device; 5 - liquid storage device; 6 - crushing cylinder; 7 - mesh cutting piece; 8 - preheating cylinder; 9 - hot air nozzle; 10 - dispersion bin; 11 - circulation pipeline. Specific embodiments

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figure 1 shown, an embodiment of the present invention provides a fly ash mixing ratio device, including a mixing pipeline 101, a fly ash bin 102, a cement bin 103, and a water bin 105; The mixing pipeline 101 is a ring-shaped pipeline connected end to end. The fly ash bin 102 and the cement bin 103 are respectively used to store fly ash and cement. The fly ash bin 102 and the cement bin 103 are respectively connected to the mixing pipeline 101 through a plurality of downwardly inclined material conveying pipelines 104 arranged along the direction of the mixing pipeline 101, so that the materials in the fly ash bin 102 and the cement bin 103 are respectively input into the mixing pipeline 101 through the plurality of material conveying pipelines 104. The water bin 105 is connected to the mixing pipeline 101 through a water conveying pipeline 106. A plurality of impellers 107 are arranged in the mixing pipeline 101. The impellers 107 are used to drive the mixture in the mixing pipeline 101 to circulate in the mixing pipeline 101. The mixing pipeline 101 is provided with a discharge port.

[0021] In this embodiment, the water in the water sump 105 is introduced into the mixing pipe 101 through the water conveyance pipe 106. The impeller 107 in the mixing pipe 101 is driven to rotate by an external drive motor, providing power for the water in the mixing pipe 101 to make the water circulate in a clockwise or counterclockwise direction. After the water flows directionally in the mixing pipe 101, according to Bernoulli's principle, the pressure inside it will decrease. The materials in the fly ash bin 102 and the cement bin 103 enter the mixing pipe 101 via multiple feeding pipes 104 under the action of gravity and pressure difference. After entering the mixing pipe 101, the pressure will decrease, and the materials will disperse and fall into the water under the pressure difference. The water in the mixing pipe 101 keeps flowing, and the materials continuously enter the water through the dispersion of the feeding pipes 104, preventing the large agglomeration of the materials. In addition, besides providing fluid power, the impeller 107 can also stir the materials to make the fluid mixture more uniform.

[0022] In some embodiments of the present invention, the outer shape of the mixing pipe 101 is rectangular, and the impeller 107 penetrates into the mixing pipe 101 at the intersection of adjacent sides of the mixing pipe 101 so that the impeller 107 provides power along the direction of one of the sides. With such a setting, the shaft of the impeller 107 with blades can be hermetically slid into the mixing pipe 101, the drive motor is located outside the mixing pipe 101, and the driving direction of the impeller 107 can be ensured to make the fluid in the mixing pipe 101 circulate.

[0023] In some embodiments of the present invention, the outer shape of the mixing pipe 101 is a rounded rectangle. The shape of the rounded rectangle is more conducive to fluid flow.

[0024] In some embodiments of the present invention, a feeding pump is installed on the feeding pipe 104, and the feeding pump is used to provide the power for feeding.

[0025] In some embodiments of the present invention, weighing devices and valves are installed on the fly ash bin 102, the cement bin 103, and the water sump 105. The weighing devices can achieve the precise proportioning of the material weights. After the material weight reaches the preset weight, the valves are closed, and then it can be waited for uniform mixing.

[0026] The embodiment of the present invention also provides a mixing ratio formula of fly ash, cement, and water for goaf backfilling as shown in Table 1 below: Table 1

[0027] From the data in the table, it can be seen that the compressive strength of the hardened body of the slurry (fluid mixture) is greatly affected by the water-cement ratio, the solid-phase ratio, and the curing age. Under the conditions of the same water-cement ratio and the same age, as the fly ash content gradually increases, the hydration reaction in the slurry significantly weakens, and the amount of gel products generated decreases. In the early stage of the slurry, fly ash mainly plays a physical filling role, thus reducing the strength of the hardened body. Under the conditions of the same solid-phase ratio and the same age, as the water-cement ratio increases, the strength of the hardened body of the slurry gradually decreases. For the grouting materials with the same mix ratio, the greater the mass of water, the larger the particle spacing in the solid substances, and the strength of the hardened body is mainly provided by the gel substances generated by the hydration reaction of C 3 S (tricalcium silicate) and C 2 S (dicalcium silicate) in the cement, and the pores in the slurry are filled by the hydration products. From the perspective of the curing age, the strength of the slurry under any mix ratio increases with the increase of the curing age. There are mainly two reasons for this. The first point is that the early strength in the cement is mainly generated by the hydration of C 3 S and C 3 A (tricalcium aluminate), while the later strength mainly depends on the hydration of C 2 S. When the curing age is too short, the hydration of dicalcium silicate is not yet complete. The second point is the hydration of fly ash. There is a layer of glass-like substance on the surface of fly ash particles. In the early stage of the slurry, this layer of substance hinders the hydration of fly ash. However, as time goes by, after Ca 2+ , OH - and other ions gradually strip off the substances on the surface layer of fly ash, Si and Al in the fly ash also start to undergo hydration reactions, so it also plays a role in increasing the later strength of the slurry.

[0028] According to the "Feasibility Study Report on the Coal Pillar Strip Filling Mining in the Aomiao Aocun Coal Pressing Area of the 105 Mining Area of Jinping Coal Industry", during the goaf filling operation of Jinping Coal Industry, it is required that the filling body be in good contact with the roof of the strip roadway, and the filling strength of the solid filling reaches 4 MPa and above. To minimize the cement consumption and meet the filling strength requirements, preferably, in the filling ratio of the embodiment of the present invention, the solid-phase ratio (cement: fly ash) is selected as 3:7, and the water-cement ratio (water: cement) is 1.5 to prepare the filling slurry, and the prepared slurry is used for goaf filling.

[0029] Such as Figure 2 , in some embodiments of the present invention, the fly ash bin 102 is used to store the fly ash after decarbonization treatment. The decarbonization treatment relies on a decarbonization device, including: Placing the fly ash in the decarbonization bin 1 to make the decarbonization bin 1 full of fly ash; wherein, the fly ash includes porous carbon particles; Sealing the decarbonization bin 1 and performing a vacuum treatment on the decarbonization bin 1; Inject liquid into the decarbonization bin 1 under a vacuum negative pressure environment so that the liquid fills the porous carbon particles; Perform ultrasonic treatment on the fly ash in the decarbonization bin 1 so that the liquid filled in the porous carbon particles generates a cavitation effect; Take out the fly ash after the cavitation effect from the decarbonization bin 1 and perform drying treatment.

[0030] In the decarbonization device of this embodiment, the drying treatment step can be realized by a drying device.

[0031] Specifically, fly ash includes vitreous body and a small amount of porous carbon particles. Among them, the porous carbon particles not only belong to chemically inert components, which are not conducive to subsequent mixing with cement and water to form a fluid mixture, but also due to their porous structure, reduce the strength of the fluid mixture after hardening and increase the water demand. Therefore, before mixing fly ash with cement and water, it is necessary to remove the porous carbon particles in the fly ash. Specifically, first load the fly ash into the decarbonization bin 1, and then perform vacuum pumping on the decarbonization bin 1 to make the inside of the decarbonization bin 1 a vacuum environment, that is, the fly ash is in a vacuum environment. After completing the vacuum pumping treatment, inject liquid into the decarbonization bin 1. Under the vacuum environment, the liquid is easy to fill the gaps in the fly ash and further fill the space inside the porous carbon particles. After the liquid is fully filled, perform ultrasonic treatment on the fly ash in the decarbonization bin 1 to make the liquid generate a cavitation effect, and the energy generated by the cavitation effect breaks the porous carbon particles. After completing the ultrasonic treatment, drain the liquid. At this time, due to the negative pressure and the remaining liquid, the fly ash is in a wet bulk structure. In this embodiment, continue to use the drying device to perform drying treatment on it. On the one hand, the liquid is removed, and on the other hand, high temperature can oxidize the residual carbon elements to achieve decarbonization. After decarbonization, the fly ash can be mixed with water and cement in a certain proportion to obtain a fluid mixture for use as a building material or a gel material, realizing waste utilization. For example, the obtained fluid mixture is used for goaf filling on the spot.

[0032] It can be understood that the liquid can be recycled.

[0033] It should be noted that in order to prevent part of the fly ash from being pumped out during the vacuum pumping process, it is also possible to first perform vacuum pumping and then add fly ash, and the order of these two steps can be adjusted flexibly.

[0034] In this embodiment, a vacuum pumping device 2 can be used for vacuum pumping treatment, and an ultrasonic emission device 3 can be used for ultrasonic treatment.

[0035] In some embodiments of the present invention, the fly ash is contained in a material device 4, the liquid is contained in a liquid storage device 5, and both the material device 4 and the liquid storage device 5 are connected to the decarbonization bin 1 through valves.

[0036] In some embodiments of the present invention, the vacuum pumping process includes: pumping the inside of the decarbonization chamber 1 to a vacuum so that the pressure inside is 10 -5 ~10 -3 Pa.

[0037] In some embodiments of the present invention, the liquid includes an oxidant. For example, it can be hydrogen peroxide. In this embodiment, the oxidant can not only act as a medium to destroy the porous carbon particles through the cavitation effect, but also be an oxidant. Under the cavitation effect, the oxidant can also provide heat and react with the porous carbon particles to remove carbon elements.

[0038] Please refer to Figure 3 , in some embodiments of the present invention, the drying process is realized by a drying device, and the drying device includes a crushing unit, a preheating unit, and a hot air dispersion unit; The crushing unit is used to crush the fly ash infiltrated with the liquid into multiple blocks, the preheating unit is used to preheat the multiple crushed fly ash blocks, and the hot air dispersion unit is used to heat and disperse the preheated fly ash blocks.

[0039] In some embodiments of the present invention, the crushing unit includes a vertically upward crushing cylinder 6, and a mesh cutting member 7 is installed on the inner wall of the crushing cylinder 6. The mesh cutting member 7 is used to divide the fly ash infiltrated with the liquid passing through it into multiple blocks. In this embodiment, the mesh cutting member 7 can break the whole fly ash into multiple small pieces.

[0040] In some embodiments of the present invention, the preheating unit is connected to the crushing unit. The preheating unit includes a preheating cylinder 8. One end of the preheating cylinder 8 is connected to one end of the crushing cylinder 6, and the other end of the preheating cylinder 8 is a tapered end. The inner cross-sectional area of the tapered end gradually becomes smaller in the direction of its opening. At least one hot air nozzle 9 penetrates into the bottom of the preheating cylinder 8, and the hot air nozzle 9 is used to spray high-temperature air flow.

[0041] In this embodiment, one end of the preheating cylinder 8 is connected to the crushing cylinder 6, so that the multiple damaged blocks enter the preheating cylinder 8. At least one hot air nozzle 9 for spraying high-temperature air flow penetrates into the bottom of the preheating cylinder 8. On the one hand, the hot air nozzle 9 heats up the inside of the preheating cylinder 8. On the other hand, it is located at the bottom and can provide aerodynamic force to prevent the fly ash from accumulating and blocking in the preheating cylinder 8. The upward air flow can also have a stirring effect, causing some small blocks or particles to bounce and disperse, that is, initially realizing the dispersion effect. The cross-sectional area of the opening of the tapered end is small, similar to a spray structure. The air flow and fly ash cannot be immediately discharged completely, resulting in an increase in pressure here, while the external air pressure is lower. The air pressure difference tears and disperses the fly ash at the discharge opening.

[0042] In some embodiments of the present invention, the hot air dispersion unit includes a dispersion chamber 10. The opening at the tapered end of the preheating cylinder 8 penetrates into a position near the top of the side of the dispersion chamber 10. An air outlet is provided in a part of the top of the dispersion chamber 10 away from the opening at the tapered end. A filter screen is installed at the air outlet, and a circulation pipeline 11 is connected to the air outlet. One end of the circulation pipeline 11 away from the air outlet is connected to a hot air nozzle 9. An aerodynamic device is installed on the circulation pipeline 11, and the aerodynamic device is used to drive the air flow to circulate between the circulation pipeline 11, the hot air nozzle 9 and the dispersion chamber 10. A heating device is installed on the dispersion chamber 10 to provide heat inside the dispersion chamber 10.

[0043] In this embodiment, the circulation pipeline 11 continuously extracts air, further reducing the air pressure inside the dispersion chamber 10, increasing the pressure difference between the inside and outside of the opening at the tapered end, and enhancing the dispersion effect. The air outlet is away from the opening at the tapered end, creating a pressure difference between the tapered end and the air outlet, increasing the lateral movement distance of the fly ash, which is beneficial to dispersion and drying. A heating device is also provided around the dispersion chamber 10, which can be an electromagnetic heating device or a thermal resistor. The heating device adds heat to the inside of the dispersion chamber 10, and then through the air flow circulation, the hot air fills the entire device.

[0044] It should be noted that highly absorbent resin can be pasted inside the circulation pipeline 11 to absorb the water vapor dried out.

[0045] In some embodiments of the present invention, the tapered end of the preheating cylinder 8 is inclined towards the dispersion chamber 10.

[0046] In some embodiments of the present invention, both the material device 4 and the liquid storage device 5 include vacuum bags and valves.

[0047] In this embodiment, after the valve is opened, the vacuum bag can automatically suck the material into the decarbonization chamber 1 under the action of the decarbonization chamber 1 and the external atmospheric pressure.

[0048] It should be noted that the valve is installed on the decarbonization chamber 1, and the connection relationship between the material device 4 and the liquid storage device 5 and the decarbonization chamber 1 is controlled by opening and closing the valve. The vacuum bag and the valve can be detachably connected. The vacuum bag is removed, fly ash and liquid are added to it, and then the vacuum bag and the valve are connected, and a sealing tape is pasted to maintain the connection seal.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fly ash mixing and proportioning device, characterized in that: It includes a mixing pipeline (101), a fly ash silo (102), a cement silo (103) and a water silo (105); The mixing pipe (101) is an annular pipe connected end to end; the fly ash bin (102) and the cement bin (103) are used to contain fly ash and cement respectively; the fly ash bin (102) and the cement bin (103) are respectively connected to the mixing pipe (101) via a plurality of downwardly inclined material conveying pipes (104) arranged along the direction of the mixing pipe (101), so that the materials in the fly ash bin (102) and the cement bin (103) are respectively input into the mixing pipe (101) via the plurality of material conveying pipes (104); the water bin (105) is connected to the mixing pipe (101) via a water conveying pipe (106); a plurality of impellers (107) are provided in the mixing pipe (101); the impellers (107) are used to drive the mixture in the mixing pipe (101) to circulate in the mixing pipe (101); and the mixing pipe (101) is provided with a material discharge port.

2. A fly ash mixing and proportioning device according to claim 1, characterized in that: The fly ash bin (102) is used to contain fly ash that has been subjected to a decarbonization treatment. The decarbonization treatment is performed by a decarbonization device. When performing the decarbonization treatment, the decarbonization device comprises: Placing fly ash in a carbon removal bin (1) so that the fly ash fills the carbon removal bin (1); wherein the fly ash comprises porous carbon particles; Sealing the carbon removal bin (1), and performing a vacuum treatment on the carbon removal bin (1); Injecting liquid into the carbon removal chamber (1) under a vacuum negative pressure environment, so that the liquid fills the porous carbon particles; Ultrasonic treatment is performed on the fly ash in the carbon removal bin (1) to cause cavitation effect in the liquid filled in the porous carbon particles; The fly ash after the cavitation effect is taken out from the carbon removal bin (1) and dried.

3. A fly ash mixing and proportioning device according to claim 1, characterized in that: The mixing pipe (101) has a rectangular shape, and the impeller (107) is inserted into the mixing pipe (101) at the intersection of adjacent sides of the mixing pipe (101), so that the impeller (107) provides power along the direction of one side of the mixing pipe (101).

4. A fly ash mixing and proportioning device according to claim 3, characterized in that: The mixing pipe (101) has a rounded rectangular shape.

5. The fly ash mixing and proportioning device according to claim 1, characterized in that: The feed pipeline (104) is equipped with a feed pump, and the feed pump is used to provide power for feeding.

6. A fly ash mixing and proportioning device according to claim 1, characterized in that: The fly ash silo (102), the cement silo (103) and the water silo (105) are all equipped with weighing devices and valves.

7. A fly ash mixing and proportioning device according to claim 2, characterized in that: The fly ash is contained in a material device (4), and the liquid is contained in a liquid storage device (5). Both the material device (4) and the liquid storage device (5) are connected to the carbon removal bin (1) via a valve; The vacuum treatment comprises: vacuuming the carbon removal bin (1) to make the internal pressure of the bin 10 -5 ~10 -3 Pa; The liquid includes an oxidant.

8. A fly ash mixing and proportioning device according to claim 2, characterized in that: The drying process is achieved by a drying device, which includes a crushing unit, a preheating unit and a hot air dispersion unit; The crushing unit is used to crush the fly ash soaked in liquid into multiple blocks, the preheating unit is used to preheat the multiple crushed fly ash blocks, and the hot air dispersion unit is used to heat and disperse the preheated fly ash blocks.

9. A fly ash mixing and proportioning device according to claim 8, characterized in that: The crushing unit comprises a crushing cylinder (6) extending vertically upwards, and a mesh cutting member (7) is installed on the inner wall of the crushing cylinder (6), and the mesh cutting member (7) is used to divide the fly ash soaked in liquid passing through the crushing cylinder into a plurality of blocks; The preheating unit is connected to the crushing unit, and comprises a preheating cylinder (8), one end of the preheating cylinder (8) is connected to one end of the crushing cylinder (6), the other end of the preheating cylinder (8) is a gradient end, and the internal cross-sectional area of ​​the gradient end gradually decreases toward its opening direction, and at least one hot air nozzle (9) penetrates the bottom of the preheating cylinder (8), and the hot air nozzle (9) is used to spray high-temperature airflow; The hot air dispersion unit comprises a dispersion bin (10), the opening of the gradient end of the preheating cylinder (8) penetrates into the side of the dispersion bin (10) near the top thereof, an air outlet is provided at the top of the dispersion bin (10) away from the opening of the gradient end, a filter is installed at the air outlet, the air outlet is connected to a circulation pipe (11), one end of the circulation pipe (11) away from the air outlet is connected to the hot air nozzle (9), the circulation pipe (11) is installed with a pneumatic device, the pneumatic device is used to drive the air flow to circulate between the circulation pipe (11), the hot air nozzle (9) and the dispersion bin (10), and the dispersion bin (10) is installed with a heating device to provide heat for the dispersion bin (10).

10. A fly ash mixing and proportioning device according to claim 9, characterized in that: The gradual change end of the preheating cylinder (8) is inclined in a direction approaching the dispersion bin (10).

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