CN113645730B - Gangue microwave heat treatment equipment - Google Patents
Gangue microwave heat treatment equipment Download PDFInfo
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- CN113645730B CN113645730B CN202110794664.XA CN202110794664A CN113645730B CN 113645730 B CN113645730 B CN 113645730B CN 202110794664 A CN202110794664 A CN 202110794664A CN 113645730 B CN113645730 B CN 113645730B
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- tank body
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/80—Apparatus for specific applications
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Abstract
The invention relates to the field of coal gangue heat treatment equipment, and discloses coal gangue microwave heat treatment equipment, which also comprises a tank body, a rotating piece arranged in the tank body, a plurality of stirring blades arranged on the side wall of the rotating piece, a microwave generator arranged on the outer side wall of the tank body, and a stirring blade driven by the rotating piece to rotate, wherein the microwave generator emits microwaves into the tank body, and the stirring blades are of hollow structures. The invention has the following advantages and effects: the equipment can be suitable for the condition that the wave-absorbing medium cannot be directly added into the gangue powder for heat treatment, and the powder is heated more uniformly by adopting the heat treatment mode in the invention, so that the wave-absorbing medium can be replaced, the separation process of the wave-absorbing medium and the gangue powder is reduced, the processing rate is improved, and the industrial production cost is reduced.
Description
Technical Field
The invention relates to the technical field of gangue heat treatment equipment, in particular to gangue microwave heat treatment equipment.
Background
At present, the comprehensive utilization method of the coal and the stone in China mainly comprises the steps of generating electricity by the coal and stone, manufacturing building materials, recycling useful minerals from the coal and stone, producing compound fertilizer by the coal and stone, and the like. Years of practice prove that the coal gangue power generation has considerable pollution to the environment, and is not beneficial to environmental protection; the recovery of valuable minerals can generate new pollution sources, and the pollution sources generated by the recovery of minerals in certain areas are also hazardous waste, so that the environmental damage degree is higher, and obviously the pollution sources are irresistible; the prepared building material has low performance, limited application scene, low consumption and insignificant social benefit due to the fact that the building material is prepared by the C and C compounds; as for the production of the compound fertilizer, the fluctuation of elements contained in the raw materials of the coal gangue is large, the production process is complex, the comprehensive cost is high, and the use amount is small.
The microwave is high-frequency oscillation electromagnetic wave, when the microwave is used for processing materials, the material is internally affected by the high-frequency oscillation field of the microwave, a large number of bond energy defects can be generated in the material, in the operation process of the device, the microwave is used for carrying out heat-up treatment on the coal gangue, and meanwhile, the bond energy defects are generated in the coal gangue under the assistance of the wave-absorbing material, so that the subsequent physicochemical reaction is facilitated, and a product with certain mechanical property is formed.
At present, the microwave treatment mode of coal gangue in China is to directly add a wave-absorbing material into coal gangue powder, and under the high-speed stirring and dispersing state of a stirrer in a microwave processor, the direct heating of the material is realized, and a proper temperature environment is kept so as to carry out heat treatment on the material, but the wave-absorbing medium cannot be added in part of coal gangue powder, and the wave-absorbing medium and the coal gangue powder are required to be separated in the subsequent treatment process.
Disclosure of Invention
The invention aims to provide the microwave heat treatment equipment for the coal gangue, which not only can treat solid wastes containing wave-absorbing substances such as the coal gangue, but also can treat industrial solid wastes such as industrial chemical gypsum, tailing sand, and the like so as to achieve the purpose of efficiently disposing and absorbing the solid wastes, so that the application range of the equipment is extremely wide, and the application effect is extremely outstanding. .
The technical aim of the invention is realized by the following technical scheme: the utility model provides a gangue microwave heat treatment equipment, includes the jar body, sets up the internal rotation piece of jar, set up a plurality of stirring vane of rotation piece lateral wall, set up the microwave generator of jar external lateral wall the rotation piece drive stirring vane rotates, microwave generator to the internal portion of jar emits the microwave, stirring vane is hollow structure.
The invention is further provided with: the stirring vane is of a double-layer structure and comprises an inner layer and an outer layer, and a medium cavity is formed between the inner layer and the outer layer.
The invention is further provided with: the inner layer cavity of the stirring blade is in vacuum.
The invention is further provided with: the rotating piece comprises a rotating rod which is connected to the bottom of the tank body in a rotating mode and a rotating motor which is arranged at the bottom of the pipe body and drives the rotating rod to rotate, and a universal coupling is connected between the rotating motor and the transfer rod.
The invention is further provided with: the upper side wall of the rotating rod is radially provided with a plurality of clamping connectors, the end part of the stirring blade, which is close to the rotating rod, is provided with clamping connectors, and the hollow stirring blade is detachably connected to the clamping connectors through the clamping connectors.
The invention is further provided with: the clamping connector comprises a fixed column, a release piece and a fixed head, wherein the fixed column is uniformly and radially fixedly connected to the rotating rod, the release piece is movably connected to the axis of the fixed column, the fixed head is fixedly connected to the end of the fixed column, the clamping connector comprises a movable cavity provided with the end of the clamping connector and a locking piece arranged in the movable cavity, and when the fixed head is clamped in the movable cavity, the locking piece fixes the fixed head in the movable cavity.
The invention is further provided with: the fixing head is of a semicircular sphere shape, the diameter of the release member gradually increases from two ends to the middle, the maximum diameter of the release member is equal to that of the fixing head, the joint of the fixing head and the fixing column is inwards recessed to form a groove, and the groove and the end part of the release member can be in fit contact.
The invention is further provided with: the locking piece comprises a locking pin movably inserted into the side wall of the clamping port, a spring sleeved on the outer side of the locking pin, and a clamping block fixedly arranged at the end part of the locking pin, a shrinkage cavity is formed in the side wall of the clamping port, the locking pin penetrates through the shrinkage cavity to protrude out of the inner wall of the movable cavity, and two ends of the spring are connected with the inner walls of two opposite sides of the shrinkage cavity.
The invention is further provided with: the medium cavity is close to one side of the clamping interface and is provided with a feed inlet, a closed cover is arranged on the feed inlet, and the wave-absorbing material is filled in the medium cavity.
The invention is further provided with: the tank body is also connected with an atmosphere generator, the atmosphere generator comprises an air storage tank and a fan connected to the air storage tank, and the fan is communicated with the inside of the tank body.
The beneficial effects of the invention are as follows:
1. in the microwave heating treatment process, because the gangue belongs to solid waste materials, the content fluctuation of C element contained in the gangue is larger, if the content is smaller, the corresponding temperature range cannot be reached, in order to compensate the problem, a microwave-assisted wave-absorbing heating device is arranged in a microwave processor, and substances such as coke, manganese dioxide, ferroferric oxide and the like are added to ensure that the treatment temperature can be stably kept within the range of 600-800 ℃ in the heat treatment process, the stability of the performance of the prepared geopolymer is improved, and the temperature of the substances which weakly absorb microwaves is rapidly increased through two ways of contact heat and microwave energy transmission input, so that the purpose of sparking the gangue is achieved.
2. According to the invention, the hollow stirring blade replaces the traditional solid stirring blade, the wave-absorbing medium is added into the hollow stirring blade of the microwave processor, the material is subjected to heat treatment by utilizing the condition that the material is fully contacted with the hollow stirring blade which is stirred and dispersed at high speed, the mode can be suitable for the condition that the wave-absorbing medium cannot be directly added into gangue powder for heat treatment, and compared with the mode that the wave-absorbing medium is directly mixed with the gangue for heat treatment, the mode in the invention is heated more uniformly, the wave-absorbing medium can be repeatedly applied, the separation process of the wave-absorbing medium and the gangue powder is reduced, the processing rate is improved, and the industrial production cost is reduced.
3. The stirring blade is of a double-layer structure and comprises an inner layer and an outer layer, a medium cavity for filling wave-absorbing medium is formed between the inner layer and the outer layer, the stirring blade of the double-layer structure can avoid the phenomenon that the wave-absorbing medium is concentrated at the end part of the stirring blade due to centrifugal force in the process of rotating at a high speed, so that the inside of a tank body is heated unevenly, amorphous silicon oxide and aluminum oxide formed at a high temperature are combined with mullite crystals again due to the fact that the local temperature is too high, the activity is greatly reduced, and on the other hand, in order to ensure that the phenomenon of aggregation of the wave-absorbing medium does not occur, the inside of the stirring blade needs to be completely filled with the single-layer stirring blade.
4. According to the invention, the inner layer cavity of the stirring blade is vacuum filled, and as the inner temperature can reach more than 500 ℃ in the microwave heat treatment process of the gangue powder, if the inner layer cavity is filled with air, the inner air expands after being heated under the condition of high temperature, the volume becomes large, the inner layer and the outer layer of the stirring blade are easy to break under the extrusion of hot air, and microwaves generated by a microwave generator can be transmitted in vacuum by adopting vacuum filling, so that the transmission path of the microwaves can not be influenced, and meanwhile, the influence on the stirring blade caused by the overhigh inner temperature can not be caused.
5. According to the invention, the stirring blade and the rotating rod are detachably connected through the clamping connector, when the clamping connector is pressed towards the clamping connector, the clamping block at the end part of the locking pin is contracted along the outer surface of the fixed head and then clamped between the fixed column and the fixed head, so that the stirring blade is mounted, then the clamping block is pressed towards the clamping connector continuously, the clamping block moves to the rotating rod along the surface of the joint release piece and then pulls the stirring blade back, the clamping block drives the release piece to move to the fixed head along the axial direction of the fixed column, so that the clamping block can continuously move outwards along the outer surface of the fixed head, the stirring blade can be detached, the mounting and dismounting processes of the stirring blade can be convenient for replacing wave absorbing mediums inside the stirring blade by adopting the mode of traditional fixed connection, the fixed position is easy to deform under the condition of high temperature, the fixed mode is not stable enough, even if the tiny deformation occurs, the fixing and connection process of the stirring blade is not affected, and the connection mode is convenient and rapid.
6. The microwave heat processor is also connected with an atmosphere generator, so that whether air or other atmosphere gases are introduced can be selected according to the requirements of powder heat treatment, waste in the heat treatment process can be taken away to carry out purification treatment, and the material heat treatment is protected in atmosphere.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the structure of the present invention.
FIG. 2 is a schematic cross-sectional view of a tank according to the present invention.
FIG. 3 is a schematic top view of the tank of the present invention.
FIG. 4 is a schematic cross-sectional view of a stirring blade according to the present invention.
FIG. 5 is a schematic view of a partial cross-section of a card connector and a card connector according to the present invention.
Fig. 6 is a schematic view of the partial structure at a in fig. 5.
Fig. 7 is a schematic view of the installation state structure of the present invention.
Fig. 8 is a schematic view of the disassembled state structure of the present invention.
In the figure, 1, a tank body; 2. a microwave generator; 3. stirring blades; 31. an inner layer; 32. an outer layer; 33. a dielectric cavity; 34. an inner layer cavity; 4. a rotating member; 41. a rotating lever; 42. a rotating motor; 43. a universal coupling; 5. a clamping joint; 51. fixing the column; 52. a release member; 53. a fixed head; 531. a groove; 6. a card interface; 61. a movable cavity; 62. a locking member; 621. a locking pin; 622. a clamping block; 623. a spring; 624. a shrink chamber; 7. a feed inlet; 71. a closing cap; 8. a gas storage tank; 9. a blower.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the embodiment of the microwave heat treatment equipment for coal gangue further comprises a tank body 1, a rotating piece 4 arranged in the tank body 1, a plurality of stirring blades 3 arranged on the side wall of the rotating piece 4, a microwave generator 2 arranged on the outer side wall of the tank body 1, and the rotating piece 4 drives the stirring blades 3 to rotate, so that the coal gangue powder inside is stirred, the local temperature is prevented from being too high or too low, the microwave generator 2 emits microwaves into the tank body 1, the stirring blades 3 are of a hollow structure, the stirring blades 3 comprise an inner layer 31 and an outer layer 32, a medium cavity 33 is formed by a gap between the inner layer 31 and the outer layer 32, the cavity of the inner layer 31 is of a vacuum structure, a wave absorbing medium is filled in the medium cavity 33, the tank body 1 is further connected with a fan 9, the other end of the fan 9 is connected with a gas storage tank 8, and whether air or other atmosphere gas is pumped in according to the requirement of the heat treatment of the powder, so that waste in the heat treatment process can be taken away for purification treatment, and the atmosphere protection can be carried out on the other hand.
As shown in fig. 2, the rotating member 4 includes a rotating rod 41 rotatably connected to the bottom of the tank 1, a universal coupling 43 disposed at the bottom of the tank 1 and connected to the end of the rotating rod 41, a rotating motor 42 connected to the other end of the universal coupling 43, and the rotating motor 42 driving the rotating rod 41 to rotate, wherein the setting of the universal coupling 43 can reduce shearing force of high-speed rotation and reduce equipment loss.
As shown in fig. 3, 4 and 5, a plurality of clamping joints 5 are radially connected to the outer side wall of the rotating rod 41, a clamping joint 6 is arranged at the end part of the stirring blade 3, which is close to the rotating rod 41, the stirring blade 3 is detachably connected to the clamping joint 5 through the clamping joint 6, a feed inlet 7 is formed in one side, close to the clamping joint 6, of the medium cavity 33, the feed inlet 7 is used for replacing wave-absorbing mediums in the medium cavity 33, and then the medium cavity 33 is closed by a closing cover 71; the clamping head 5 comprises a fixed column 51 fixedly connected to the rotating rod 41, a release piece 52 movably connected to the axis of the fixed column 51, and a fixed head 53 fixedly connected to the end part of the fixed column 51, wherein the fixed head 53 is of a semicircular structure, the diameter of the release piece 52 gradually increases from two ends to the middle, the maximum diameter of the release piece 52 is equal to that of the fixed head 53, a groove 531 is formed by inwards sinking the joint of the fixed head 53 and the fixed column 51, and the groove 531 can be in fit contact with the end part of the release piece 52; the end of the clamping port 6 is inwards recessed to form a movable cavity 61, a locking piece 62 is arranged in the movable cavity 61, and when the fixed head 53 is clamped in the movable cavity 61, the locking piece 62 can fix the fixed head 53 in the movable cavity 61, so that the stirring vane 3 is installed and fixed.
As shown in fig. 6, the locking piece 62 comprises a locking pin 621 movably inserted into the side wall of the locking port 6, a shrinkage cavity 624 is arranged in the side wall of the movable cavity 61, the locking pin 621 passes through the shrinkage cavity 624 and protrudes out of the inner wall of the movable cavity 61, a spring 623 is sleeved on the locking pin 621 in the shrinkage cavity 624, two ends of the spring 623 are respectively connected on the inner wall of the shrinkage cavity 624 and the locking pin 621, a clamping block 622 is arranged at the end part of the locking pin 621 protruding out of the inner wall of the movable cavity 61, and an inclined surface is arranged on the clamping block 622 and is positioned on one side close to the fixed column 51.
The working principle of the microwave heat treatment equipment for the coal gangue is as follows: the wave-absorbing medium is filled into the medium cavity 33 from the feed inlet 7, the sealing cover 71 is covered, the clamping connector 6 of the stirring blade 3 is extruded to the clamping connector 5, the locking pin 621 gradually moves outwards under the extrusion of the fixed head 53, when the end clamping block 622 of the locking pin 621 moves to the end of the semicircle, the clamping block 622 is clamped on the end face of the fixed head 53 under the driving of the resilience force of the compressed spring 623, the installation of the stirring blade 3 is completed, then the gangue powder is added into the tank 1, the atmosphere generator is started, the tank 1 is filled with other atmosphere gases, the rotating piece 4 and the microwave generator 2 are opened, a large number of key energy defects can appear under the action of a high-frequency oscillation field of microwaves in the material in the process of processing the materials by microwaves, the key energy defects are beneficial to the formation of polymers in the later period, meanwhile, the improvement of the gangue reaction capability is facilitated, and the gangue forming capability and the forming strength can be obviously improved. In addition, when the absorbing medium is required to be replaced, the stirring blade 3 is further extruded towards the direction of the rotating rod 41 and then pulled out, in the extrusion process, the clamping block 622 moves along the surface of the releasing piece 52 to be close to the end face of the rotating rod 41, and when the stirring blade 3 is pulled back again, the clamping block 622 drives the releasing piece 52 to move towards the fixed head 53 along the fixed column 51, one end of the releasing piece 52 is embedded into the groove 531 of the fixed head 53, after the place with the largest diameter of the releasing piece 52 coincides with the place with the largest diameter of the fixed head 53, the clamping block 622 can continuously move onto the fixed head 53 and then fall off.
Claims (5)
1. The microwave heat treatment equipment for the coal gangue is characterized in that: the microwave stirring device comprises a tank body (1), a rotating piece (4) arranged in the tank body (1), a plurality of stirring blades (3) arranged on the side wall of the rotating piece (4), a microwave generator (2) arranged on the outer side wall of the tank body (1), wherein the rotating piece (4) drives the stirring blades (3) to rotate, the microwave generator (2) emits microwaves into the tank body (1), and the stirring blades (3) are of a hollow structure; the stirring blade (3) is of a double-layer structure and comprises an inner layer (31) and an outer layer (32), and a medium cavity (33) is formed between the inner layer (31) and the outer layer (32); the cavity of the inner layer (31) of the stirring blade (3) is in vacuum; the rotating piece (4) comprises a rotating rod (41) rotatably connected to the bottom of the tank body (1) and a rotating motor (42) arranged at the bottom of the tank body (1) and used for driving the rotating rod (41) to rotate, and a universal coupler (43) is connected between the rotating motor (42) and the rotating rod (41); a plurality of clamping connectors (5) are radially arranged on the outer side wall of the rotating rod (41), clamping connectors (6) are arranged at the end parts, close to the rotating rod (41), of the stirring blades (3), and the stirring blades (3) are detachably connected to the clamping connectors (5) through the clamping connectors (6); the clamping connector (5) comprises a fixed column (51) which is uniformly and radially fixedly connected to the rotating rod (41), a release piece (52) which is movably connected to the axis of the fixed column (51) and a fixed head (53) which is fixedly connected to the end part of the fixed column (51), the clamping connector (6) comprises a movable cavity (61) provided with the end part of the clamping connector (6) and a locking piece (62) arranged inside the movable cavity (61), and when the fixed head (53) is clamped in the movable cavity (61), the locking piece (62) fixes the fixed head (53) in the movable cavity (61).
2. The microwave heat treatment equipment for coal gangue, as claimed in claim 1, wherein: the fixing head (53) is of a semicircle shape, the diameter of the release piece (52) is gradually increased from two ends to the middle, the maximum diameter of the release piece (52) is equal to that of the fixing head (53), a groove (531) is formed by inwards sinking the connecting part of the fixing head (53) and the fixing column (51), and the groove (531) can be in fit contact with the end part of the release piece (52).
3. The microwave heat treatment equipment for coal gangue, as claimed in claim 1, wherein: the locking piece (62) comprises a locking pin (621) movably inserted into the side wall of the clamping connector (6), a spring (623) sleeved on the outer side of the locking pin (621), and a clamping block (622) fixedly arranged at the end part of the locking pin (621), wherein a shrinkage cavity (624) is formed in the side wall of the movable cavity (61), the locking pin (621) penetrates through the shrinkage cavity (624) and protrudes out of the inner wall of the movable cavity (61), and two ends of the spring (623) are respectively connected with the inner wall of the shrinkage cavity (624) and the locking pin (621).
4. The microwave heat treatment equipment for coal gangue, as claimed in claim 1, wherein: the medium cavity (33) is provided with a feed inlet (7) near one side of the clamping interface (6), the feed inlet (7) is provided with a sealing cover (71), and the medium cavity (33) is filled with a wave absorbing material.
5. The microwave heat treatment equipment for coal gangue, as claimed in claim 1, wherein: the novel energy-saving gas tank is characterized in that the tank body (1) is also connected with an atmosphere generator, the atmosphere generator comprises a gas storage tank (8) and a fan (9) connected to the gas storage tank (8), and the fan (9) is communicated with the inside of the tank body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110794664.XA CN113645730B (en) | 2021-07-14 | 2021-07-14 | Gangue microwave heat treatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110794664.XA CN113645730B (en) | 2021-07-14 | 2021-07-14 | Gangue microwave heat treatment equipment |
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| CN113645730A CN113645730A (en) | 2021-11-12 |
| CN113645730B true CN113645730B (en) | 2023-09-01 |
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| CN114956840B (en) * | 2022-05-05 | 2023-07-18 | 武汉科技大学 | High-strength high-micropore mullite refractory material based on coal gangue and preparation method thereof |
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