CN117754715A - Equipment and method for preparing sintered brick by microwave and resistance wire mixed heating - Google Patents
Equipment and method for preparing sintered brick by microwave and resistance wire mixed heating Download PDFInfo
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- CN117754715A CN117754715A CN202311840693.0A CN202311840693A CN117754715A CN 117754715 A CN117754715 A CN 117754715A CN 202311840693 A CN202311840693 A CN 202311840693A CN 117754715 A CN117754715 A CN 117754715A
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- 239000011449 brick Substances 0.000 title claims abstract description 131
- 238000010438 heat treatment Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 27
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 20
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims description 28
- 239000012774 insulation material Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000002440 industrial waste Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 7
- 230000005672 electromagnetic field Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000009529 body temperature measurement Methods 0.000 description 4
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- 239000007769 metal material Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011476 clinker brick Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
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- 230000007935 neutral effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses equipment and a method for preparing a baked brick by microwave and resistance wire mixed heating, and belongs to the technical field of baked brick preparation. Comprises a slag soil blocking unit, a rapid heating system, a constant temperature brick forming system and a cooling unit which are sequentially passed by a conveying system; the inner wall of the rapid heating system is provided with a silicon nitride material, a plurality of groups of magnetron units and a plurality of resistance wires; the inner wall of the constant temperature brick forming system is provided with a silicon nitride material, a plurality of groups of magnetron units and a plurality of resistance wires. The microwave-resistance wire hybrid heating is used, the temperature inside the green brick can be quickly increased by microwave heating, and the surface of the green brick is quickly heated by resistance wire heating, so that the temperature of the green brick is uniformly distributed. The existence of the conveying system can enable the brick to move in the electromagnetic field, so that the temperature field distribution inside the brick is more uniform. The sintering temperature of the green bricks is lower by microwave heating, so that the energy consumption for producing the bricks is reduced. The use of the silicon nitride material can further improve the uniformity of the temperature field of the sintering cavity and the production efficiency of equipment.
Description
Technical Field
The invention belongs to the technical field of sintered brick preparation, and relates to equipment and a method for preparing a sintered brick by adopting microwave and resistance wire mixed heating.
Background
With the rapid development of infrastructure construction, underground space development, house construction, municipal and road engineering construction produce a large amount of slag. The engineering slag soil stacking occupies a large amount of land resources, causes environmental pollution, and even has safety accidents such as unstable and collapse of the slag soil. Therefore, how to change waste into valuable, the recycling of the engineering waste residue soil is realized, and the method has important significance for saving resources and protecting the environment. In addition, the traditional brick kiln is heated from outside to inside, the heating efficiency is low and uneven, the brick kiln has long brick firing period, and the time from clay to green bricks to final finished bricks generally needs 3 days, and the efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problems of low heating efficiency and uneven heating efficiency of a brick kiln in the prior art, and provides equipment and a method for preparing a baked brick by adopting microwave and resistance wire mixed heating.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides equipment for preparing a baked brick by microwave and resistance wire hybrid heating, which comprises a slag soil blocking unit, a rapid heating system, a constant-temperature blocking system and a cooling unit, wherein the slag soil blocking unit, the rapid heating system, the constant-temperature blocking system and the cooling unit are sequentially passed through by a conveying system; the inner wall of the rapid heating system is provided with a silicon nitride material, a plurality of groups of magnetron units and a plurality of resistance wires; the inner wall of the constant temperature brick forming system is provided with a silicon nitride material, a plurality of groups of magnetron units and a plurality of resistance wires.
The invention is further improved in that:
the magnetron unit comprises two magnetrons with rectangular ports vertical to each other; the magnetron and the resistance wire are connected with a temperature control system; temperature sensors are arranged in the rapid heating system and the constant temperature brick forming system.
The power of the magnetron is 100W-1500W; the number of the magnetrons and the resistance wires is set to ensure that the power range is 20-32 KW/m 2 。
The dregs blocking unit comprises a blocking system and a drying system which are sequentially passed through by a crushing system and a conveying system.
The cooling unit comprises a first cooling system and a second cooling system which are sequentially connected.
The inner walls of the block making system, the drying system, the rapid heating system, the constant temperature brick forming system, the first cooling system and the second cooling system are all made of high-temperature-resistant electromagnetic shielding materials; the inner wall materials of the rapid heating system and the constant temperature brick forming system are alumina heat insulation materials.
And the crushing system, the block making system, the drying system, the rapid heating system, the constant temperature brick forming system, the first cooling system and the second cooling system are all provided with heat recovery systems.
The conveyor system comprises a first conveyor belt and a second conveyor belt; the starting point of the first conveyor belt is the outlet of the crushing system, the first conveyor belt passes through the block making system, and the end point of the first conveyor belt is the inlet of the drying system; the start point of the second conveyor belt is the inlet of the drying system, and the end point is the outlet of the second cooling system.
The material of the second conveyor belt is a high-temperature-resistant wave absorbing material.
In a second aspect, the invention provides a method for preparing a baked brick by using the microwave and resistance wire mixed heating, which comprises the following steps:
step one, placing industrial waste residue soil into a crushing system;
step two, conveying the dregs discharged from the crushing system to a block making system by a conveyor belt, and making the dregs into green bricks;
step three, conveying the green bricks to a drying system by a conveyor belt to control the water content of the green bricks to be 3% -5%;
step four, conveying the dried green bricks to a rapid heating system by a conveyor belt, wherein the heating rate is 45-55 ℃/min, and heating the green bricks to enable the temperature to rise to 600-750 ℃;
step five, conveying the green bricks subjected to the previous step to a constant temperature brick forming system by a conveyor belt, heating the green bricks to 800-850 ℃, and sintering for 50-70min at the temperature;
and step six, conveying the green bricks subjected to the previous step to a cooling system by a conveyor belt, and rapidly cooling the green bricks to finish the preparation of the baked bricks.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses equipment for preparing a baked brick by adopting microwave and resistance wire mixed heating, which is characterized in that a plurality of groups of magnetron units and a plurality of resistance wires are arranged on the inner wall surfaces of a rapid heating system and a constant temperature brick forming system, and microwave-resistance wire mixed heating is used for heating, so that the temperature inside a brick blank can be rapidly increased, and the surface of the brick blank is rapidly increased by the resistance wire heating, so that the temperature of the brick blank is uniformly distributed. The existence of the conveying system can enable the brick to move in the electromagnetic field, so that the temperature field distribution inside the brick is more uniform. The sintering temperature of the green bricks is lower by microwave heating, so that the production cost of the bricks is reduced. The invention greatly reduces the production period of bricks, thereby having higher efficiency for treating industrial residue soil.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an apparatus for manufacturing a baked brick by microwave and resistance wire hybrid heating in accordance with the present invention;
FIG. 2 is a front view of an apparatus for manufacturing a baked brick using microwave and resistance wire hybrid heating in accordance with the present invention;
FIG. 3 is a schematic diagram of the inside of a rapid heating system of an apparatus for manufacturing a baked brick by microwave and resistance wire hybrid heating in accordance with the present invention.
Wherein: 1-a crushing system; 2-a first conveyor belt; 3-a block making system; 4-a second conveyor belt; 5-a drying system; 6-a rapid heating system; 7-magnetron; 8-a constant temperature brick forming system; 9-a heat recovery and utilization system; 10-a first cooling system; 11-a second cooling system.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected 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 be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The invention is described in further detail below with reference to the attached drawing figures:
referring to fig. 1 and 2, the embodiment of the invention discloses equipment for preparing a baked brick by microwave and resistance wire mixed heating, which comprises a slag soil blocking unit, a rapid heating system 6, a constant temperature blocking system 8 and a cooling unit, wherein the slag soil blocking unit, the rapid heating system 6, the constant temperature blocking system 8 and the cooling unit are sequentially passed through by a conveying system; the inner wall of the rapid heating system 6 is provided with a plurality of groups of magnetron units and a plurality of resistance wires; the inner wall of the constant temperature brick forming system 8 is provided with a plurality of groups of magnetron units and a plurality of resistance wires. The clinker blocking unit comprises a crushing system (1) and a blocking system 3 and a drying system 5 which are sequentially passed by a conveying system. The cooling unit comprises a first cooling system 10 and a second cooling system 11 connected in sequence. The inner walls of the block making system 3, the drying system 5, the rapid heating system 6, the constant temperature brick forming system 8, the first cooling system 10 and the second cooling system 11 are all made of high-temperature-resistant electromagnetic shielding materials; the inner wall materials of the rapid heating system 6 and the constant temperature brick forming system 8 are alumina heat insulation materials. The crushing system 1, the block making system 3, the drying system 5, the rapid heating system 6, the constant temperature brick forming system 8, the first cooling system 10 and the second cooling system 11 are all provided with a heat recovery system 9.
Referring to fig. 3, the magnetron unit includes two magnetrons 7 having rectangular ports perpendicular; the magnetron 7 and the resistance wire are connected with a temperature control system; temperature sensors are arranged in the rapid heating system 6 and the constant temperature brick forming system 8. The power of the magnetron 7 is 100W-1500W; the number of the magnetrons 7 and the resistance wires is set to ensure that the power range is 20 KW/m to 32KW/m 2 。
The crushing system 1 is used for crushing waste residue soil on a construction site;
a conveyor system comprising a first conveyor belt 2 and a second conveyor belt 4; the starting point of the first conveyor belt 2 is the outlet of the crushing system 1, passes through the block making system 3, and the end point is the inlet of the drying system 5; the second conveyor belt 4 starts at the inlet of the drying system 5 and ends at the outlet of the second cooling system 11. The muck is conveyed to the block making system 3, and the muck can be further mixed in the conveying process so as to ensure the sintering quality of the final brick; conveying the briquetted green bricks from the briquetting system 3 to a drying system 5; conveying the dried bricks from the drying system 5 to the rapid heating system 6, wherein the second conveyor belt 4 is made of high-temperature resistant materials; transporting bricks reaching a predetermined temperature from the rapid heating system 6 to the constant temperature brick forming system 8; transporting the bricks of the thermostatic brick forming system 8 to a first cooling system 10 and a second cooling system 11; and conveying the cooled brick to a designated place.
A briquetting system 3 for producing the clinker into green bricks by using a conventional method;
the drying system 5 heats the green bricks by using the heat recycling system 9 and the resistance wires so that the free water of the green bricks is completely evaporated;
a rapid heating system 6 for rapidly heating the brick to 700 ℃ at a speed of 60 ℃/min, wherein the specification of the box body is 5 multiplied by 0.8 multiplied by 0.6m, and a magnetron 7 is arranged on the wall surface, wherein the magnetron is controlled by the systemThe distribution of the tube 7 is shown in the third figure, the specification is 800-2000W multiplied by 36, the resistance wires are distributed in the other two inner walls without the distribution of the magnetron 7, and the power regulation and control range is 20-32 KW/m 2 Wherein, the inside of the box body is embedded with a metal material which is 2mm thick and reflects microwaves, and the outside is a high temperature resistant heat insulation material. And the power of each microwave port and the resistance wire of the magnetron 7 is regulated in real time according to the data of infrared temperature measurement and thermocouple temperature measurement in the cavity by using a temperature control system, so that the temperature in the system cavity is quickly raised to be close to 700 ℃. In particular, the silicon nitride material is uniformly distributed around the bricks of the conveyor belt in the cavity of the rapid heating system 6, the excellent wave absorbing performance and thermal stability of the silicon nitride can ensure the safety of the system while ensuring the rapid temperature rise of the bricks, and the thickness of the silicon nitride material is 3-6mm.
The constant temperature brick forming system 8 is characterized in that the distribution of magnetrons 7 and resistance wires in the constant temperature brick forming system 8 is similar to that of a rapid heating system, and the power of each microwave port and the resistance wire is regulated in real time according to the data of infrared temperature measurement and thermocouple temperature measurement in a cavity of the constant temperature brick forming system 8 by using a temperature control system, so that the temperature in the cavity is kept at about 800 ℃, and meanwhile, a high temperature resistant conveyor belt is arranged in the cavity, so that the local overheating caused by the non-uniformity of electric field distribution is further prevented; after entering the constant temperature brick forming system 8, the brick is quickly heated to 800 ℃ and slowly moves on a conveyor belt to ensure the heating uniformity of microwaves and resistance wires, and after 40-60 min of sintering, the brick enters a cooling chamber. In particular, the silicon nitride material is uniformly distributed on the inner wall of the chamber of the constant temperature brick forming system 8, the excellent wave absorbing performance and thermal stability of silicon nitride can ensure the safety of the system while ensuring the rapid temperature rise of the brick, and the thickness of the silicon nitride material is 3-6mm.
The cooling unit comprises a first cooling system 10 and a second cooling system 11 which are sequentially connected, heat can be transmitted to the drying system 5 and the rapid heating system 6, after bricks enter the chambers of the first cooling system 10 and the second cooling system 11, hot air in the chambers flows to the chambers of the drying system 5 by using a high-temperature resistant blower, the energy utilization efficiency is guaranteed, and meanwhile, the drying chamber 5 also uses the same-specification blower to enable low-temperature air of the drying chamber 5 to enter the chambers of the first cooling system 10 and the second cooling system 11 at the same flow speed, so that the air pressure balance of the two chambers is guaranteed. The heat insulation material is used outside the conveying pipeline, so that energy loss caused by heat dissipation of the pipeline is prevented. The cooling system can recycle energy sources, and accords with the concept of environmental protection.
In the invention, the inner walls of the transmission pipelines are all made of high-temperature-resistant electromagnetic shielding materials, so that microwave leakage in the production process and damage to the high Wen Duichuan transmission pipelines generated in the microwave heating process are prevented; the outer walls of the rapid heating system 6 and the constant temperature brick forming system 8 are made of aluminum oxide heat insulation materials, so that heat dissipation is prevented.
The invention utilizes the characteristics of the microwave heating, such as integrity, selectivity, controllability and the like, and simultaneously utilizes the temperature controllability of the resistance wire heating, so that the green brick can be heated uniformly while being heated rapidly in the rapid heating stage; meanwhile, the bricks can slowly move on the conveyor belts of the rapid heating system 6 and the constant temperature brick forming system 8, and the distribution of temperature fields inside the bricks can be more uniform.
The embodiment of the invention also provides a method for preparing the baked brick by using the microwave and resistance wire mixed heating equipment, which comprises the following steps:
step one, putting industrial waste residue soil into a crushing system 1;
step two, conveying the muck out of the crushing system 1 to a block making system 3 by a conveyor belt, and making the muck into a green brick;
step three, conveying the green bricks to a drying system 5 by a conveyor belt to control the water content of the green bricks to be 3% -5%;
step four, conveying the dried green bricks to a rapid heating system 6 by a conveyor belt, wherein the heating rate is 45-55 ℃/min, and heating the green bricks to enable the temperature to rise to 600-750 ℃;
step five, conveying the green bricks subjected to the previous step to a constant temperature brick forming system 8 by a conveyor belt, heating the green bricks to 800-850 ℃, and sintering for 50-70min at the temperature;
and step six, conveying the green bricks subjected to the previous step to a cooling system by a conveyor belt, and rapidly cooling the green bricks to finish the preparation of the baked bricks.
The working principle of the invention is as follows:
the microwave heating is a brand new heating method, and the heating principle is as follows: when the polar molecular dielectric and the polar molecular dielectric are placed in a microwave electromagnetic field, dipoles or existing dipoles are formed in the dielectric material to be rearranged, and the molecules are rearranged along with the direction of the continuously-changing high-frequency electric field along with the high-frequency alternating electromagnetic field swinging at a speed of up to hundreds of millions per second, the original interference and obstruction of thermal motion and interaction of the molecules must be overcome, friction-like action is generated, and molecular level stirring is realized, so that a large amount of heat is generated. Compared with the traditional heating, the microwave heating has the characteristics of instantaneity, integrity, selective heating, high energy utilization efficiency, environmental protection, no pollution and the like, in the conventional heating, equipment preheating, radiant heat loss and high-temperature medium heat loss occupy a larger proportion in total energy consumption, when microwaves are heated, the medium materials can absorb microwaves and convert the microwaves into heat energy, and the equipment shell metal materials are microwave reflection type materials which can only reflect but can not absorb microwaves (or absorb microwaves very little). Therefore, the heat loss constituting the microwave heating apparatus is only a very small portion of the total energy consumption. In addition, microwave heating is an internal 'body heat source', and high-temperature medium is not needed for heat transfer, so that most of microwave energy is absorbed by medium materials and converted into heat required for temperature rise, and the energy utilization rate can be greatly improved when bricks are fired. Compared with the traditional heating, the heating speed can be greatly improved by using the microwave-resistance wire hybrid heating, and the problems of uneven heating, lower external temperature of materials and the like in the microwave heating process can be solved by comparing with the microwave heating.
Silicon nitride is a typical strong covalent bond compound, has the characteristics of high hardness, good thermal stability, stable chemical structure, excellent insulating property, high single crystal heat conductivity and the like, and under normal pressure, silicon nitride is decomposed at 1877 ℃, the oxidation resistance of a silicon nitride product is good, the highest use temperature in dry air is up to 1600 ℃, the highest use temperature in neutral and reducing atmospheres is up to 1850 ℃, and the strength is not obviously reduced compared with normal temperature. In particular, silicon nitride has certain wave-absorbing performance, in the microwave heating process, the difference between the wave-absorbing performance of the silicon nitride and the wave-absorbing performance of a clinker brick blank is not large, and in a rapid heating stage system, the silicon nitride material is used in the chamber, so that the heating efficiency of the chamber can be accelerated, the uniformity of a brick temperature field is improved, the brick production efficiency is further improved, and the production energy consumption is reduced.
Temperature rise curve:
and in the rapid heating stage, heating at a heating rate of 40-60 ℃/min, and when the temperature reaches 700 ℃, entering a constant temperature brick forming system 8 through a conveyor belt in a box chamber with a heat preservation function, entering a cooling system after 40-60 min, and cooling at a rate of not more than 50 ℃/min.
In the invention, the drying chamber 5, the rapid heating system 6 and the constant temperature brick forming system 8 are all made of heat insulation materials, and a layer of metal material capable of reflecting microwaves, such as copper, is used in the rapid heating system 6 and the constant temperature brick forming system 8 on the basis of the heat insulation materials. In particular, at the magnetron 7, a material which is resistant to high temperature and allows microwaves to pass through is used, and the conveyor belt is made of silicon nitride which is a high temperature resistant wave absorbing material; the heat recycling system 9 uses air convection to make the drying system 5 and the rapid heating system 6 generate heat convection to realize energy circulation.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The equipment for preparing the baked brick by adopting microwave and resistance wire hybrid heating is characterized by comprising a slag soil blocking unit, a rapid heating system (6), a constant temperature blocking system (8) and a cooling unit which are sequentially passed by a conveying system; the inner wall of the rapid heating system (6) is provided with a silicon nitride material, a plurality of groups of magnetron units and a plurality of resistance wires; the inner wall of the constant temperature brick forming system (8) is provided with a silicon nitride material, a plurality of groups of magnetron units and a plurality of resistance wires.
2. The apparatus for manufacturing a baked brick using microwave, resistance wire hybrid heating according to claim 1, characterized in that the magnetron unit comprises two magnetrons (7) with rectangular ports perpendicular; the magnetron (7) and the resistance wire are connected with a temperature control system; temperature sensors are arranged in the rapid heating system (6) and the constant temperature brick forming system (8).
3. The apparatus for producing a baked brick by microwave, resistance wire hybrid heating according to claim 2, characterized in that the power of the magnetron (7) is 100W-1500W; the number of the magnetrons (7) and the resistance wires is set to ensure that the power range is 20-32 KW/m 2 。
4. The apparatus for manufacturing a baked brick by microwave and resistance wire hybrid heating according to claim 1, wherein the clinker briquetting unit comprises a crushing system (1) and a briquetting system (3) and a drying system (5) which pass by in turn.
5. The apparatus for manufacturing a baked brick using microwave, resistance wire hybrid heating according to claim 4, wherein the cooling unit comprises a first cooling system (10) and a second cooling system (11) connected in sequence.
6. The equipment for preparing the baked brick by adopting microwave and resistance wire mixed heating according to claim 5, wherein the inner walls of the block making system (3), the drying system (5), the rapid heating system (6), the constant temperature brick forming system (8), the first cooling system (10) and the second cooling system (11) are all high-temperature-resistant electromagnetic shielding materials; the inner wall materials of the rapid heating system (6) and the constant temperature brick forming system (8) are alumina heat insulation materials.
7. The device for preparing the baked brick by adopting microwave and resistance wire mixed heating according to claim 5, wherein a heat recovery system (9) is arranged in each of the crushing system (1), the block making system (3), the drying system (5), the rapid heating system (6), the constant temperature block making system (8), the first cooling system (10) and the second cooling system (11).
8. The apparatus for producing baked bricks by microwave, resistance wire hybrid heating according to claim 7, characterized in that the conveyor system comprises a first conveyor belt (2) and a second conveyor belt (4); the starting point of the first conveyor belt (2) is the outlet of the crushing system (1), passes through the block making system (3) and the end point is the inlet of the drying system (5); the second conveyor belt (4) has a start point being the inlet of the drying system (5) and an end point being the outlet of the second cooling system (11).
9. The apparatus for producing baked brick by microwave and resistance wire mixed heating according to claim 8, wherein the material of the second conveyor belt (4) is a high temperature resistant wave absorbing material.
10. A method of using the microwave, resistance wire hybrid heating apparatus of any one of claims 4-9 to prepare a sintered brick, comprising the steps of:
step one, putting industrial waste residue soil into a crushing system (1);
step two, conveying the muck out of the crushing system (1) to a block making system (3) by a conveyor belt, and making the muck into a green brick;
step three, conveying the green bricks to a drying system (5) by a conveyor belt to control the water content of the green bricks to be 3% -5%;
step four, conveying the dried green bricks to a rapid heating system (6) by a conveyor belt, wherein the heating rate is 45-55 ℃/min, and heating the green bricks to enable the temperature to rise to 600-750 ℃;
step five, conveying the green bricks subjected to the previous step to a constant temperature brick forming system (8) by a conveyor belt, heating the green bricks to 800-850 ℃, and sintering for 50-70min at the temperature;
and step six, conveying the green bricks subjected to the previous step to a cooling system by a conveyor belt, and rapidly cooling the green bricks to finish the preparation of the baked bricks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311840693.0A CN117754715A (en) | 2023-12-28 | 2023-12-28 | Equipment and method for preparing sintered brick by microwave and resistance wire mixed heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311840693.0A CN117754715A (en) | 2023-12-28 | 2023-12-28 | Equipment and method for preparing sintered brick by microwave and resistance wire mixed heating |
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| Publication Number | Publication Date |
|---|---|
| CN117754715A true CN117754715A (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311840693.0A Pending CN117754715A (en) | 2023-12-28 | 2023-12-28 | Equipment and method for preparing sintered brick by microwave and resistance wire mixed heating |
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| Country | Link |
|---|---|
| CN (1) | CN117754715A (en) |
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2023
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