Comprehensive treatment system and method for furnace slag of power plant

Abstract

A comprehensive treatment system for furnace slag of a power plant comprises a furnace slag conveying belt; the material guiding groove is used for obtaining slag from the slag conveying belt, two movable baffles are arranged on the side portion of the material guiding groove in a sliding and penetrating mode, an air inlet is formed in the bottom of the material guiding groove and communicates with an air cannon used for conveying high-pressure gas into the temporary storage space, a through hole communicating with the temporary storage space is formed in the top of the material guiding groove, and a filter screen is fixedly arranged in the through hole; the through hole is communicated with a conveying pipe; the dust collector comprises a box body and a dust collecting hopper which are arranged up and down, the upper part of the box body is communicated with an air outlet pipe, the side part of the dust collecting hopper is communicated with an air inlet pipe, the air inlet pipe is communicated with the conveying pipe, and a primary magnetic separation mechanism is arranged in the dust collecting hopper; the dust conveyor is arranged below the dust collecting hopper; and the scrap conveyor is arranged below the tail end of the guide chute. According to the slag screening device, the large-particle part, the particles capable of being attracted by the magnetic field and the particles incapable of being attracted by the magnetic field in the slag can be directly screened and separated, and follow-up treatment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of garbage slag treatment, in particular to a comprehensive treatment system and method for power plant slag. Background Art

[0002] As one of the effective methods for waste reduction, waste incineration power generation technology is to burn waste in an incinerator to release heat energy, and the waste heat can be recovered for heating or power generation. The flue gas is discharged after purification, and a small amount of residual residue is discharged to landfill or for other purposes. For domestic waste, waste incineration power generation technology has a large processing capacity, good volume reduction, and thorough harmlessness, and has gradually been widely used. After the domestic waste is incinerated, some slag will be produced. The composition of these slags is very complex. By screening the slag, the useful part can be reused, so as to more thoroughly treat the domestic waste and generate better economic benefits. In the prior art, the screening of slag is mainly carried out by a variety of equipment, including crushing equipment, magnetic separation equipment and gravity separation equipment. Because the slag contains a lot of fine particles, a large amount of dust will be generated during the transfer and screening process. Each link needs to be specially treated to avoid polluting the environment, which leads to the complexity of the overall structure and process of the system. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a comprehensive treatment system and method for power plant slag, which can directly separate the larger particles in the slag, the particles that can be attracted by the magnetic field, and the particles that cannot be attracted by the magnetic field, so as to facilitate subsequent treatment.

[0004] In order to achieve the above-mentioned purpose, the specific scheme adopted by the present invention is: a comprehensive slag treatment system for a power plant, comprising: Slag conveyor belt, used to transfer slag; A material guide trough is used to obtain slag from the slag conveyor belt. Two movable baffles are slidably penetrated on the side of the material guide trough. When the two movable baffles are moved into the material guide trough, a temporary storage space is enclosed. An air inlet is provided at the bottom of the material guide trough. The air inlet is connected to an air cannon for conveying high-pressure gas into the temporary storage space. A through hole connected to the temporary storage space is provided at the top of the material guide trough. A filter screen is fixedly arranged in the through hole, and the through hole is connected to a conveying pipe. The dust collector comprises a box body and a dust collecting hopper arranged in an upper and lower manner, the upper part of the box body is connected with an air outlet pipe, the side part of the dust collecting hopper is connected with an air inlet pipe, and the air inlet pipe is connected with the conveying pipe, a primary magnetic separation mechanism is arranged inside the dust collecting hopper, the primary magnetic separation mechanism comprises a rotating shaft arranged rotatably, one end of the rotating shaft is connected with an adjustment motor after extending out of the dust collecting hopper, two rotating disks parallel to each other are fixedly sleeved on the rotating shaft, a plurality of first collecting plates are fixedly connected between the two rotating disks, and a plurality of first magnets are embedded inside the first collecting plates; A dust conveyor is arranged below the dust collecting hopper; A chip conveyor is arranged below the end of the material guide chute.

[0005] As a further optimization of the above-mentioned comprehensive slag treatment system for a power plant: the guide trough includes a top plate and a bottom plate arranged in parallel, and two mutually parallel side plates are fixedly connected between the top plate and the bottom plate, and one of the side plates is provided with two channels for the movable baffle to pass through; The top plate is fixedly connected to two mounting plates, both mounting plates are provided with driving components, the bottom plate is fixedly connected to a supporting plate, the movable baffle is movably arranged on the supporting plate, and the movable baffle is fixedly connected to a push plate, and the push plate is correspondingly connected to the driving components.

[0006] As a further optimization of the above-mentioned comprehensive slag processing system for a power plant: the driving assembly includes a driving motor fixedly connected to the mounting plate and two sprockets rotatably arranged on the mounting plate, the driving motor is used to drive one of the sprockets, the two sprockets are connected by a chain, and the push plate is connected to the chain through a connecting block.

[0007] As a further optimization of the above-mentioned comprehensive slag treatment system for a power plant: the top plate is fixedly connected to two limit bars located in the material guide trough, and when the movable baffle moves into the material guide trough, the movable baffle contacts with the limit bars accordingly, and the movable baffle is located on the side of the limit bar close to the temporary storage space.

[0008] As a further optimization of the above-mentioned comprehensive slag treatment system for a power plant: two guide assemblies corresponding to the push plate are arranged on the support plate, the guide assembly includes two guide rails fixedly arranged on the support plate, a slide groove matching the guide rail is opened at the bottom of the push plate, and the movable baffle connected to the push plate is located between the two guide rails.

[0009] As a further optimization of the above-mentioned comprehensive slag treatment system for a power plant: at least one reinforcing rod is passed through the first collecting plate, and the two ends of the reinforcing rod are respectively fixedly connected to the two turntables, and a cavity for accommodating the first magnet is opened inside the first collecting plate, and the cavity is filled with a filler for supporting and separating the first magnet.

[0010] As a further optimization of the above-mentioned comprehensive slag treatment system for a power plant: the first collecting plates are divided into multiple groups, the number of first collecting plates in each group is at least two, the multiple groups of first collecting plates are evenly distributed around the circumferential direction of the rotating shaft, and the first collecting plates in the same group are evenly distributed along the radial direction of the rotating shaft.

[0011] As a further optimization of the above-mentioned comprehensive treatment system for slag in a power plant: at least two secondary magnetic separation mechanisms are arranged on the dust conveyor, the secondary magnetic separation mechanism includes a base plate fixedly arranged above the dust conveyor, the base plate is fixedly connected to a second magnet, the second magnet is fixedly connected to a plurality of second collecting plates, the plurality of second collecting plates are parallel to each other and in contact with the material bearing surface of the dust conveyor, and a material passing gap is formed between two adjacent second collecting plates.

[0012] As a further optimization of the above-mentioned comprehensive treatment system for slag in a power plant: the second magnetic separation mechanism includes two guard plates respectively arranged on both sides of the dust conveyor, and the distance between the two guard plates gradually decreases from top to bottom, the base plate is fixedly connected between the tops of the two guard plates, and the bottoms of the two guard plates are in contact with the material bearing surface of the dust conveyor.

[0013] A comprehensive treatment method for slag in a power plant, based on the above-mentioned comprehensive treatment system for slag in a power plant, comprises the following steps: Using the slag conveyor belt to convey the slag into the guide trough; The temporary storage space is formed by using the movable baffle, and part of the slag is blocked in the temporary storage space; The air cannon is used to deliver high-pressure gas to the temporary storage space to lift the slag, and the dust in the slag is made to pass upward through the filter screen, the delivery pipe and the air inlet pipe and then enter the dust collecting hopper; collecting the dust using the dust collector; In the dust collecting hopper, the dust is screened by the primary magnetic separation mechanism to obtain the first material; The dust and the first material are respectively discharged from the dust collecting hopper to the dust conveyor.

[0014] Beneficial effects: The present invention first temporarily stores the slag in a temporary storage space, and then uses the cooperation of an air cannon and a filter to separate the larger particles from the smaller particles in the slag, and then uses a dust collector to filter out the particles in the dust to avoid dust pollution of the environment, and a primary magnetic separation mechanism is set in the dust collector, which can directly perform a primary magnetic separation on the particles filtered out by the dust collector, and screen out the particles that can be attracted by the magnetic field and the particles that cannot be attracted by the magnetic field, and finally transport them out through a dust conveyor. By adopting the present invention, the larger particles in the slag, the particles that can be attracted by the magnetic field, and the particles that cannot be attracted by the magnetic field can be directly screened and separated, which is convenient for subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the system of the present invention; Figure 2 is a schematic diagram of the setting method of the movable baffle; Figure 3 It is a schematic diagram of the setting method of the guide rail; Figure 4 This is a schematic diagram of the setting method of the limit strip; Figure 5 It is a schematic diagram of the structure of the dust collector; Figure 6 is a structural schematic diagram of the first magnetic separation mechanism; Figure 7 It is a structural schematic diagram of the second magnetic separation mechanism.

[0016] Description of the drawings: 1- slag conveyor belt, 2- guide trough, 3- movable baffle, 4- temporary storage space, 5- air cannon, 6- air inlet, 7- filter screen, 8- debris conveyor, 9- conveying pipe, 10- air inlet fan, 11- air inlet pipe, 12- dust hopper, 13- discharge cylinder, 14- box, 15- air outlet pipe, 16- air outlet fan, 17- dust conveyor, 18- bottom plate, 19- side plate, 20- top plate, 21- limit strip, 22- mounting plate , 23-drive motor, 24-sprocket, 25-chain, 26-support plate, 27-guide rail, 28-push plate, 29-connecting block, 30-support rod, 31-dust bag, 32-vibrating mechanism, 33-turntable, 34-rotating shaft, 35-reinforcement rod, 36-first magnet, 37-first collecting plate, 38-vertical plate, 39-filler, 40-guard plate, 41-base plate, 42-second magnet, 43-second collecting plate, 44-feeding gap. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1 As shown, the present invention first provides a comprehensive slag treatment system for a power plant, which is suitable for a waste incineration power plant. The system includes a slag conveyor 1, a material guide trough 2, a dust collector, a dust conveyor 17 and a debris conveyor 8.

[0019] The slag conveyor 1 is used for transporting slag.

[0020] The inclined material guide trough 2 is used to obtain slag from the slag conveyor 1. Two movable baffles 3 are slidably penetrated on the side of the material guide trough 2. When the two movable baffles 3 are moved into the material guide trough 2, a temporary storage space 4 is enclosed. An air inlet 6 is provided at the bottom of the material guide trough 2. The air inlet 6 is connected to an air cannon 5 for conveying high-pressure gas into the temporary storage space 4. A through hole connected to the temporary storage space 4 is provided at the top of the material guide trough 2. A filter screen 7 is fixedly installed in the through hole, and the through hole is connected to a conveying pipe 9.

[0021] The dust collector includes a box body 14 and a dust hopper 12 which are arranged in an upper and lower manner. The upper part of the box body 14 is connected to an air outlet pipe 15, and the side of the dust hopper 12 is connected to an air inlet pipe 11, and the air inlet pipe 11 is connected to the conveying pipe 9. A primary magnetic separation mechanism is arranged inside the dust hopper 12, and the primary magnetic separation mechanism includes a rotatable rotating shaft 34, one end of the rotating shaft 34 extends out of the dust hopper 12 and is connected to an adjusting motor, and two parallel turntables 33 are fixedly sleeved on the rotating shaft 34, and a plurality of first collecting plates 37 are fixedly connected between the two turntables 33, and a plurality of first magnets 36 are embedded inside the first collecting plates 37.

[0022] The dust conveyor 17 is arranged below the dust collecting hopper 12 .

[0023] The chip conveyor 8 is arranged below the end of the guide chute 2 .

[0024] After the waste incineration power generation is completed, the slag is taken out of the incinerator and transported by the slag conveyor 1. At the end of the slag conveyor 1, the slag falls downward into the guide trough 2. After that, a movable baffle 3 located at the bottom is first moved to the guide trough 2, and the slag is blocked by the movable baffle 3. When the amount of slag blocked by the movable baffle 3 reaches the moving degree, the slag conveyor 1 is suspended, and another movable baffle 3 located at the top is moved to the guide trough 2. At this time, the two movable baffles 3 and the guide trough 2 jointly enclose a temporary storage space 4, and a part of the slag is temporarily stored in the temporary storage space 4. After that, the air cannon 5 is used to transport high-pressure air to the temporary storage space 4. The high-pressure air impacts the slag in the temporary storage space 4, blows up the smaller particles in the slag, and forms dust. At the same time, some slag with larger particles or in the form of thin sheets will also be blown up. The blown dust can pass through the filter 7 and enter the conveying pipe 9, while the slag with larger particles or thin flakes will be blocked by the filter 7 and continue to stay in the temporary storage space 4. Then, the air inlet pipe 11 is used to transport gas to the dust hopper 12 of the dust collector. Because the air inlet pipe 11 and the conveying pipe 9 are connected, the dust can also be brought into the dust hopper 12. After entering the dust hopper 12, the dust flows upward under the action of the dust collector, and the slag with smaller particles entrained therein will be filtered out, while the air is output to the outside through the air outlet pipe 15. The slag with smaller particles filtered out by the dust collector falls back into the dust hopper 12 after being shaken off, and is magnetically separated by the primary magnetic separation mechanism during the falling process. Specifically, the rotating shaft 34 is driven to rotate by adjusting, and then the rotating shaft 34 drives the two rotating disks 33 to rotate, and the two rotating disks 33 drive the first collecting plate 37 to rotate during the rotation, so that the first collecting plate 37 can continuously contact the slag with smaller particles that fall down. Because the first collecting plate 37 is embedded with the first magnet 36, under the action of the magnetic field generated by the first magnet 36, a part of the ferromagnetic particles in the slag with smaller particles can be adsorbed on the first collecting plate 37, and the part that cannot be adsorbed will continue to fall down and accumulate in the dust collecting hopper 12. At this point, the slag temporarily stored in the temporary storage space 4 is processed.

[0025] Next, the two movable baffles 3 are pulled out from the guide trough 2, and the temporary storage space 4 disappears. The slag with larger particles or thin flakes that were originally retained in the temporary storage space move downward along the guide trough 2 under the action of gravity, and finally fall on the debris conveyor 8. At the same time, the slag conveyor 1 is restarted to transport the slag to the guide trough 2 again. On the other hand, the dust hopper 12 is opened, and some particles that cannot be attracted by the first collecting plate 37 can fall downward onto the dust conveyor 17, and form a first dust pile on the dust conveyor 17. After the dust hopper 2 is emptied, the magnetic field of the first magnet 36 is interrupted, so that the particles adsorbed on the first collecting plate 37 pass downward through the dust hopper 12 and fall onto the dust conveyor 17 to form a second dust pile. Because the annual conveyor 17 is in continuous operation, there will be a certain distance between the first dust pile and the second dust pile. Because the first dust pile cannot be attracted by the first magnet 36, while the second dust pile can be attracted by the first magnet 36, the first dust pile and the second dust pile have different subsequent processing processes. The first dust pile and the second dust pile can be transported to different subsequent processing equipment respectively.

[0026] The present invention first temporarily stores the slag in the temporary storage space 4, and then uses the cooperation of the air cannon 5 and the filter screen 7 to separate the larger particles from the smaller particles in the slag, and then uses the dust collector to filter out the particles in the dust to avoid dust pollution of the environment, and a primary magnetic separation mechanism is set in the dust collector, which can directly perform a primary magnetic separation on the particles filtered out by the dust collector, and screen out the particles that can be attracted by the magnetic field and the particles that cannot be attracted by the magnetic field, and finally transport them out through the dust conveyor 17. By adopting the present invention, the larger particles in the slag, the particles that can be attracted by the magnetic field, and the particles that cannot be attracted by the magnetic field can be directly screened and separated, which is convenient for subsequent processing.

[0027] It should also be noted that the slag with larger particles screened out can be used to make bricks, the particles that can be attracted by the magnetic field can be recycled after smelting, and the particles that cannot be attracted by the magnetic field can be dissolved to extract the useful parts. The relevant processes and equipment are all mature existing technologies in this field and can be directly applied to the comprehensive processing system of the present invention, which will not be described in detail here.

[0028] like Figures 2 to 4 As shown, the specific structure of the material guide trough 2 is: the material guide trough 2 includes a top plate 20 and a bottom plate 18 arranged in parallel, and two parallel side plates 19 are fixedly connected between the top plate 20 and the bottom plate 18, and one of the side plates 19 is provided with two channels for the movable baffle 3 to pass through.

[0029] In order to drive the movable baffle 3 to move into the guide trough 2 or be pulled out from the guide trough 2, the top plate 20 is fixedly connected to two mounting plates 22, and the two mounting plates 22 are both provided with driving components, the bottom plate 18 is fixedly connected to a support plate 26, the mounting plate 22 and the support plate 26 are connected by a support rod 30, the movable baffle 3 is movably arranged on the support plate 26, and the movable baffle 3 is fixedly connected to a push plate 28, and the push plate 28 is correspondingly connected to the driving component. The driving component includes a driving motor 23 fixedly connected to the mounting plate 22 and two sprockets 24 rotatably arranged on the mounting plate 22, the driving motor 23 is used to drive one of the sprockets 24, the two sprockets 24 are connected by a chain 25, and the push plate 28 is connected to the chain 25 by a connecting block 29. The two driving components operate independently to achieve independent control of the movable baffle 3. The specific principle of the driving assembly driving the movable baffle 3 is as follows: when the movable baffle 3 needs to be driven, the driving motor 23 is controlled to rotate, and during the rotation of the driving motor 23, the chain 25 is driven to move through the sprocket 24 connected thereto, and then the chain 25 drives the push plate 28 to move, and finally the push plate 28 drives the movable baffle 3 to move. By controlling the rotation direction of the driving motor 23, the movable baffle 3 can be driven to move into the guide trough 2 or be pulled out of the guide trough 2, and the control process is simple. During the movement of the movable baffle 3, it can be supported by the support plate 26 and the bottom plate 18, and has strong stability, and can avoid damage to the chain 25 due to the downward tilt of the movable baffle 3.

[0030] Considering that when the air cannon 5 delivers high-pressure air to the temporary storage space 4, the movable baffle 3 will also be subjected to a large impact force, in order to limit the movable baffle 3 and prevent the movable baffle 3 from being deformed or even damaged by excessive lateral impact, thereby causing the movable baffle 3 to be unable to be smoothly withdrawn from the material guide trough 2, the top plate 20 is fixedly connected with two limit bars 21 located in the material guide trough 2. When the movable baffle 3 moves into the material guide trough 2, the movable baffle 3 contacts the limit bars 21 correspondingly, and the movable baffle 3 is located on the side of the limit bars 21 close to the temporary storage space 4. When the air cannon 5 delivers high-pressure gas to the temporary storage space 4, the force of the high-pressure air impacting the movable baffle 3 can be transmitted to the entire material guide trough 2 through the limit bars 21, and the material guide trough 2 is used to bear the load to achieve protection of the movable baffle 3.

[0031] In order to ensure that the direction of the movable baffle 3 is stable during the movement, so that it can smoothly pass through the channel into the material guide trough 2 or be pulled out from the material guide trough 2, two guide assemblies corresponding to the push plate 28 are provided on the support plate 26, and the guide assembly includes two guide rails 27 fixedly arranged on the support plate 26, and the bottom of the push plate 28 is provided with a slide groove matching the guide rails 27, and the movable baffle 3 connected to the push plate 28 is located between the two guide rails 27. The moving direction of the push plate 28 can be limited by the two guide rails 27, thereby realizing the guidance of the movable baffle 3, and avoiding the movable baffle 3 from being deflected and unable to smoothly enter the material guide trough 2 or be unable to smoothly be pulled out from the material guide trough 2. On the other hand, the movable baffle 3 is located between the two guide rails 27, which can further improve the stability of the movable baffle 3.

[0032] like Figure 5 and 6 As shown, in order to strengthen the structure of the first collecting plate 37, at least one reinforcing rod 35 is provided on the first collecting plate 37, and the two ends of the reinforcing rod 35 are respectively fixedly connected to the two turntables 33. A cavity for accommodating the first magnet 36 is provided inside the first collecting plate 37, and the cavity is filled with a filler 39 for supporting and separating the first magnet 36. The filler 39 can be made of fabric to separate the first magnets 36, so as to prevent adjacent first magnets 36 from approaching each other and maintain the stability of the first magnet 36.

[0033] like Figure 6 and 7 As shown, in order to improve the efficiency of the primary magnetic separation and screen out particles that can be attracted by the magnetic field as much as possible, the first collecting plates 37 are divided into multiple groups, each group of first collecting plates 37 has at least two first collecting plates 37, multiple groups of first collecting plates 37 are evenly distributed around the circumference of the rotating shaft 34, and the first collecting plates 37 in the same group are evenly distributed along the radial direction of the rotating shaft 34. With this arrangement, the slag with smaller particles shaken off by the dust collector can contact more first collecting plates 37 during the falling process, thereby increasing the possibility of being attracted.

[0034] On the basis of setting up a primary magnetic separation mechanism, although a part of the particles that can be attracted by the magnetic field can be screened out, there will still be some particles that can be attracted by the magnetic field among the particles that fall from the dust collecting hopper 12 to the dust conveyor 17. In order to further screen, at least two secondary magnetic separation mechanisms are set on the dust conveyor 17. The secondary magnetic separation mechanism includes a base plate 41 fixedly set above the dust conveyor 17, the base plate 41 is fixedly connected to a second magnet 42, and the second magnet 42 is fixedly connected to a plurality of second collection plates 43. The plurality of second collection plates 43 are parallel to each other and contact the material bearing surface of the dust conveyor 17, and a material gap 44 is formed between two adjacent second collection plates 43. In the process of conveying particles by the dust conveyor 17, the particles can pass through the material gap 44 between the two second collection plates 43, and the particles that can be attracted by the magnetic field will be adsorbed on the second collection plate 43 under the action of the second magnet 42, so as to achieve secondary screening, so as to fully screen out the particles that can be attracted by the magnetic field. Furthermore, at least two secondary magnetic separation mechanisms are evenly distributed along the conveying direction of the dust conveyor 17. In two adjacent secondary screening mechanisms, the second collecting plates 43 are staggered, that is, the second collecting plate 43 in the next secondary screening mechanism is aligned with the material gap 44 in the previous secondary screening mechanism, so that the second collecting plate 43 can be used to divide the particles on the dust conveyor 17 multiple times, thereby fully improving the effectiveness of the secondary magnetic separation.

[0035] In order to prevent particles from falling from the side of the dust conveyor 17 when passing through the secondary magnetic separation mechanism, the second magnetic separation mechanism includes two guard plates 40 respectively arranged on both sides of the dust conveyor 17, and the distance between the two guard plates 40 gradually decreases from top to bottom, the base plate 41 is fixedly connected between the tops of the two guard plates 40, and the bottoms of the two guard plates 40 are in contact with the material bearing surface of the dust conveyor 17. The two guard plates 40 can constrain the particles on the dust conveyor 17 to achieve the effect of preventing the particles from falling.

[0036] It should also be noted that the first magnet 36 and the second magnet 42 are both configured as electromagnets, which can generate a magnetic field or eliminate the magnetic field by controlling the on and off of the current, thereby adsorbing the particles that can be attracted by the magnetic field onto the first collecting plate 37 and the second collecting plate 43, or causing them to fall from the first collecting plate 37 and the second collecting plate 43.

[0037] The specific structure of the dust collector is as follows: a plurality of dust bags 31 are arranged in the box body 14, and the dust bags 31 are connected to the dust hopper 12 after passing downward out of the box body 14, and a vibrating mechanism 32 is arranged on the upper part of the box body 14 for vibrating the dust bags 31 to shake off the particles filtered out by the dust bags 31. The dust hopper 12 includes two parallel vertical plates 38, and two inclined side plates are fixedly connected between the two vertical plates 38, which together enclose the dust hopper 12 which is wide at the top and narrow at the bottom, and two turntables 33 are rotatably arranged on the inner side of the vertical plates 38 in a one-to-one correspondence. The lower end of the dust hopper 12 is connected to a soft discharge cylinder 13. An air inlet fan 10 is arranged at the inlet end of the air inlet pipe 11, and an air outlet fan 16 is arranged at the outlet end of the air outlet pipe 15.

[0038] Finally, after the slag is screened, the present invention may also include various processing equipment for deep processing of the screened slag, such as brick making equipment for making bricks using large-particle slag and smelting equipment for smelting the screened particles that can be attracted by the magnetic field, etc. These are conventional technologies in the field and will not be described in detail here.

[0039] The present invention further provides a method for comprehensive treatment of slag in a power plant. Based on the above-mentioned system for comprehensive treatment of slag in a power plant, the method includes S1 to S6.

[0040] S1. Use the slag conveyor 1 to convey the slag to the guide trough 2.

[0041] S2. Use the movable baffle 3 to form a temporary storage space 4, and seal part of the slag in the temporary storage space 4.

[0042] S3. Use the air cannon 5 to deliver high-pressure gas to the temporary storage space 4 to lift the slag, and make the dust in the slag pass upward through the filter screen 7, the delivery pipe 9 and the air inlet pipe 11 and then enter the dust collecting hopper 12.

[0043] S4. Collect dust using a dust collector.

[0044] S5. In the dust collecting hopper 12, the dust is screened by a primary magnetic separation mechanism to obtain a first material.

[0045] S6. Discharge the dust and the first material from the dust collecting hopper 12 to the dust conveyor 17 respectively.

[0046] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A comprehensive slag treatment system for a power plant, characterized in that: include: A slag conveyor belt (1) for transporting slag; A material guide trough (2) is used to obtain slag from the slag conveyor belt (1); two movable baffles (3) are slidably penetrated on the side of the material guide trough (2); when the two movable baffles (3) are moved into the material guide trough (2), a temporary storage space (4) is enclosed; an air inlet (6) is provided at the bottom of the material guide trough (2); the air inlet (6) is connected to an air cannon (5) for conveying high-pressure gas into the temporary storage space (4); a through hole is provided at the top of the material guide trough (2) and is connected to the temporary storage space (4); a filter screen (7) is fixedly arranged in the through hole; and a conveying pipe (9) is connected to the through hole; The dust collector comprises a box body (14) and a dust collecting hopper (12) arranged in an upper and lower manner, the upper part of the box body (14) is connected to an air outlet pipe (15), the side part of the dust collecting hopper (12) is connected to an air inlet pipe (11), and the air inlet pipe (11) is connected to the conveying pipe (9), a primary magnetic separation mechanism is arranged inside the dust collecting hopper (12), the primary magnetic separation mechanism comprises a rotatably arranged rotating shaft (34), one end of the rotating shaft (34) extends out of the dust collecting hopper (12) and is connected to an adjusting motor, two mutually parallel rotating disks (33) are fixedly sleeved on the rotating shaft (34), a plurality of first collecting plates (37) are fixedly connected between the two rotating disks (33), and a plurality of first magnets (36) are embedded inside the first collecting plates (37); A dust conveyor (17) is arranged below the dust collecting hopper (12); A debris conveyor (8) is arranged below the end of the material guide trough (2).

2. A comprehensive slag treatment system for a power plant as claimed in claim 1, characterized in that: The material guide trough (2) comprises a top plate (20) and a bottom plate (18) arranged in parallel, and two mutually parallel side plates (19) are fixedly connected between the top plate (20) and the bottom plate (18), and one of the side plates (19) is provided with two passages for the movable baffle (3) to pass through; The top plate (20) is fixedly connected to two mounting plates (22), and the two mounting plates (22) are both provided with driving components. The bottom plate (18) is fixedly connected to a supporting plate (26), and the movable baffle (3) is movably arranged on the supporting plate (26), and the movable baffle (3) is fixedly connected to a push plate (28), and the push plate (28) is correspondingly connected to the driving components.

3. A comprehensive slag treatment system for a power plant as claimed in claim 2, characterized in that: The driving assembly comprises a driving motor (23) fixedly connected to the mounting plate (22) and two sprockets (24) rotatably arranged on the mounting plate (22), the driving motor (23) being used to drive one of the sprockets (24), the two sprockets (24) being connected via a chain (25), and the push plate (28) being connected to the chain (25) via a connecting block (29).

4. A comprehensive slag treatment system for a power plant as claimed in claim 2, characterized in that: The top plate (20) is fixedly connected to two limit bars (21) located in the material guide trough (2); when the movable baffle (3) moves into the material guide trough (2), the movable baffle (3) contacts the limit bars (21) correspondingly, and the movable baffle (3) is located on a side of the limit bars (21) close to the temporary storage space (4).

5. A comprehensive slag treatment system for a power plant as claimed in claim 2, characterized in that: The support plate (26) is provided with two guide assemblies corresponding to the push plate (28), the guide assemblies comprising two guide rails (27) fixedly arranged on the support plate (26), a slide groove matching the guide rails (27) is provided at the bottom of the push plate (28), and the movable baffle (3) connected to the push plate (28) is located between the two guide rails (27).

6. A comprehensive slag treatment system for a power plant as claimed in claim 1, characterized in that: At least one reinforcing rod (35) is provided on the first collecting plate (37), and two ends of the reinforcing rod (35) are respectively fixedly connected to the two rotating disks (33); a cavity for accommodating the first magnet (36) is provided inside the first collecting plate (37), and the cavity is filled with a filler for supporting and separating the first magnet (36).

7. A comprehensive slag treatment system for a power plant as claimed in claim 1, characterized in that: The first collecting plates (37) are divided into a plurality of groups, each group of first collecting plates (37) having at least two first collecting plates (37). The plurality of groups of first collecting plates (37) are evenly distributed in the circumferential direction of the rotating shaft (34), and the first collecting plates (37) in the same group are evenly distributed in the radial direction of the rotating shaft (34).

8. A comprehensive slag treatment system for a power plant as claimed in claim 1, characterized in that: The dust conveyor (17) is provided with at least two secondary magnetic separation mechanisms, the secondary magnetic separation mechanisms comprising a base plate (41) fixedly arranged above the dust conveyor (17), the base plate (41) being fixedly connected to a second magnet (42), the second magnet (42) being fixedly connected to a plurality of second collection plates (43), the plurality of second collection plates (43) being parallel to each other and in contact with the material bearing surface of the dust conveyor (17), and a material passing gap (44) being formed between two adjacent second collection plates (43).

9. A comprehensive slag treatment system for a power plant as claimed in claim 8, characterized in that: The second magnetic separation mechanism comprises two guard plates (40) respectively arranged on both sides of the dust conveyor (17), and the distance between the two guard plates (40) gradually decreases from top to bottom, the base plate (41) is fixedly connected between the tops of the two guard plates (40), and the bottoms of the two guard plates (40) are in contact with the material bearing surface of the dust conveyor (17).

10. A comprehensive treatment method for power plant slag, characterized in that: Based on a comprehensive slag treatment system for a power plant as claimed in any one of claims 1 to 9, the method comprises the following steps: Utilizing the slag conveyor belt (1) to convey the slag to the guide trough (2); The movable baffle (3) is used to form the temporary storage space (4), and part of the slag is blocked in the temporary storage space (4); the air cannon (5) is used to deliver high-pressure gas to the temporary storage space (4) to lift the slag, and the dust in the slag is made to pass upward through the filter screen (7), the delivery pipe (9) and the air inlet pipe (11) and then enter the dust collecting hopper (12); the dust is collected by the dust collector; In the dust collecting hopper (12), the dust is screened by the primary magnetic separation mechanism to obtain a first material; The dust and the first material are respectively discharged from the dust collecting hopper (12) to the dust conveyor (17).

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