CN116728581B - Stone-imitating red mud brick sintering production system - Google Patents
Stone-imitating red mud brick sintering production system Download PDFInfo
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- CN116728581B CN116728581B CN202311009156.1A CN202311009156A CN116728581B CN 116728581 B CN116728581 B CN 116728581B CN 202311009156 A CN202311009156 A CN 202311009156A CN 116728581 B CN116728581 B CN 116728581B
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- 239000011454 mudbrick Substances 0.000 title claims abstract description 82
- 238000005245 sintering Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000011449 brick Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000004575 stone Substances 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 239000003570 air Substances 0.000 description 27
- 238000001816 cooling Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
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- 238000004880 explosion Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
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- 238000001035 drying Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000009739 binding Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/02—Conditioning the material prior to shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a stone-like red mud brick sintering production system, which belongs to the technical field of red mud brick production equipment and comprises the following steps: the crusher base is used for crushing the main body of the red mud stone block mined from the red mud ore; the dust remover is communicated with the crusher seat through an exhaust fan and can recycle red mud dust generated by crushing; the red mud mixing seat is communicated with the material conveying end of the crusher seat; the pressing shaping device is connected to one side of the red mud mixing seat; the preheating evaporator is arranged outside the pressing shaping equipment, the red mud brick blanks after pressing shaping enter the preheating evaporator, and the preheating evaporator preheats the red mud brick blanks and removes water in the brick blanks; a sintering kiln heats the preheated green bricks at high temperature to combine the green bricks and form a firm brick body; the invention can improve the production efficiency, increase the productivity and reduce the production period; and the green bricks are heated and absorbed more fully in the preheating process, which is beneficial to improving the stability of the brick body.
Description
Technical Field
The invention belongs to the technical field of red mud brick production equipment, and particularly relates to a stone-like red mud brick sintering production system.
Background
Red mud bricks are a common building material, which is made by sintering red mud. The heat insulation material has higher strength, durability and heat insulation performance, and can meet the requirements of building structures. The red mud bricks have good stability and quality consistency after being sintered, and can be used for various building engineering including houses, commercial buildings, industrial buildings and the like; in the prior art, the production of the stone-like red mud bricks is carried out by the processes of raw material treatment, crushing and screening, mixing, forming treatment, sintering, cooling and the like; the preheating treatment of the red mud brick blank is not paid attention to before the sintering of most stone-like red mud bricks, so that the red mud brick blank suddenly evaporates water at high temperature to cause explosion and cracking of the brick body surface; the cracking deformation phenomenon is obvious, the production quality of the red mud bricks is seriously affected, and the defective rate is higher; therefore, it is necessary to provide a stone-like red mud brick sintering production system to solve the problems in the prior art.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: a stone-like red mud brick sintering production system, comprising:
the crusher base is used for crushing the main body of the red mud stone block mined from the red mud ore;
the dust remover is communicated with the crusher seat through an exhaust fan, and can recycle red mud dust generated by crushing, and an exhaust barrel is arranged outside the dust remover;
the red mud mixing seat is communicated with the material conveying end of the crusher seat, and crushed red mud particles enter the red mud mixing seat to be mixed with water by a plurality of mineral powder to form red mud bricks;
the pressing shaping equipment is connected to one side of the red mud mixing seat and can be used for high-pressure pressing and shaping of red mud brick materials through a die;
the preheating evaporator is arranged outside the pressing shaping equipment, the pressed red mud brick blanks enter the preheating evaporator, and the preheating evaporator preheats the red mud brick blanks and removes water in the brick blanks;
a sintering kiln heats the preheated red mud brick blanks at high temperature to combine the red mud brick blanks and form a firm brick body;
wherein, preheat the evaporimeter with the dust remover is linked together to strengthen the ventilation effect in the evaporimeter of preheating, still be provided with the ventilation kiln outside the sintering kiln.
Further, preferably, the preheating evaporator includes:
a preheating tank;
the hoisting and transferring mechanism is arranged in the preheating tank in an overhead manner;
the heat flow tank is arranged at one side of the preheating tank, the upper end of the heat flow tank is communicated with the preheating tank through a connecting pipe, a backflow tank is further arranged at one side of the heat flow tank, a transfer pipe is arranged outside the backflow tank, and one end of the transfer pipe is connected below the preheating tank, so that a circulating flow space is formed among the preheating tank, the heat flow tank and the backflow tank;
the waste heat pipe is transversely connected to one side of the reflux tank and is used for collecting and treating the recovered waste heat of the sintering kiln;
the temperature control and adjustment assembly is arranged in the preheating tank and divides the preheating tank into a plurality of preheating temperature chambers; and the directional heat supply mechanism is arranged outside the preheating tank and close to one side of the heat flow tank.
Further, preferably, the temperature control adjusting assembly includes:
the inner ring pipe is coaxially fixed in the preheating tank, and an annular flow bin is formed between the inner ring pipe and the preheating tank;
the inner flow blocking piece is embedded and fixed in the annular flowing bin left and right, and divides the annular flowing bin into two independent bins up and down;
the exhaust fan seats are arranged in the annular flowing bin and are positioned in independent bins above the annular flowing bin, and a plurality of exhaust fan seats work at different rotational speed intensities;
the separation plate is embedded and fixed in the inner annular pipe so as to form independent preheating temperature cavities, the exhaust fan seats are arranged in one-to-one correspondence with the preheating temperature cavities, rubber heat insulation curtains are arranged in the separation plate, and the hanging and transporting mechanism can penetrate through the rubber heat insulation curtains, so that red mud brick blanks can sequentially enter the preheating temperature cavities; and the guide plate is embedded and fixed in the annular flowing bin and is positioned in the independent bin at the opposite lower part, the cross section of the guide plate is of an arc-shaped structure, and a plurality of air flow holes are formed in the guide plate.
Further, preferably, the partition plates are two partition plates arranged in a row, and the preheating temperatures in the three corresponding preheating temperature chambers can be in an ascending trend towards one side close to the directional heat supply mechanism, wherein the red mud brick blanks can be continuously preheated in each preheating temperature chamber.
Further, preferably, the hanging and transferring mechanism includes:
the fixed rail frame is horizontally fixed and overhead in the preheating tank, and a driving wheel seat is arranged on the fixed rail frame;
the lifting device is fixed below the driving wheel seat;
the carrying boxes are fixedly arranged below the lifting device and used for placing a plurality of red mud brick blanks.
Further, preferably, the cross section of the fixed rail frame is in a straight slot structure, and an inlet guide rail and an outlet guide rail are detachably arranged outside the fixed rail frame.
Further, preferably, the directional heat supply mechanism includes:
an air flow tank;
the air supply cover is fixed on one side of the airflow tank, and a plurality of air supply channels corresponding to the carrying boxes are arranged on the air supply cover and are used for vertically conveying heat flow to the carrying boxes; and a control regulating valve arranged between the air supply cover and the airflow tank.
Further, as the preference, carrying the incasement and being equipped with a plurality of places concave position for to red mud brick adobe design and place, it is all built on stilts to be fixed with the overhead fretwork board in the concave position of placing, the cross section of overhead fretwork board is U font structure, just carrying the incasement below and being equipped with the air current passageway, the air current passageway with each place concave position corresponds the intercommunication.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, a preheating evaporator is arranged to gradually evaporate water in the red mud brick green brick, so that explosion or surface cracking of the brick body caused by rapid evaporation of water in later sintering is avoided, wherein the temperature control adjusting component can divide the preheating tank into a plurality of preheating temperature chambers, the hanging and transporting mechanism sequentially and circularly transports the red mud brick green brick to the preheating temperature chambers, each preheating temperature chamber can be independently controlled according to the requirement, uniform preheating of the green brick in each temperature chamber is ensured, the temperature gradient in the brick body is reduced, the preheating effect is improved, and the continuous preheating process flow is realized. Therefore, the production efficiency can be improved, the productivity can be increased, and the production period can be reduced; and the green bricks are heated and absorbed more fully in the preheating process, which is beneficial to improving the stability of the brick body.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a preheating evaporator according to the present invention;
FIG. 3 is a schematic diagram of the preheating tank according to the present invention;
FIG. 4 is a schematic diagram of a temperature control adjusting assembly according to the present invention;
FIG. 5 is a schematic view of the inner collar of the present invention;
FIG. 6 is a schematic diagram of a hoist transport mechanism according to the present invention;
FIG. 7 is a schematic view of a structure of a fixed rail in the present invention;
FIG. 8 is a schematic diagram of a directional heating mechanism in accordance with the present invention;
FIG. 9 is a schematic view of the structure of the carrying case of the present invention;
in the figure: 1. a breaker base; 11. red mud ore; 12. a dust remover; 13. a red mud mixing seat; 14. pressing and shaping equipment; 15. a sintering kiln; 2. a preheat evaporator; 21. a preheating tank; 22. a reflux drum; 23. a heat flow tank; 24. a connecting pipe; 25. a residual heat pipe; 3. a hoisting and transporting mechanism; 31. a fixed rail frame; 32. a driving wheel seat; 33. a carrying case; 35. an air flow channel; 36. overhead stencil; 4. a temperature control adjustment assembly; 41. an inner collar; 42. an inner choke; 43. an independent bin; 44. an air flow hole; 45. a deflector; 46. an exhaust fan seat; 47. a partition plate; 48. rubber heat insulation curtain; 5. a directional heat supply mechanism; 51. an air flow tank; 52. an air supply cover; 53. and controlling the regulating valve.
Detailed Description
Referring to fig. 1 to 9, in an embodiment of the present invention, a stone-like red mud brick sintering production system includes:
the crusher comprises a crusher base 1 for crushing a main body of red mud stone blocks extracted from red mud ores 11;
the dust remover 12 is communicated with the crusher seat 1 through an exhaust fan, the dust remover 12 can recycle red mud dust generated by crushing, and an exhaust barrel is arranged outside the dust remover 12;
the red mud mixing seat 13 is communicated with the material conveying end of the crusher seat 1, and crushed red mud particles enter the red mud mixing seat 13 to be mixed with water by a plurality of mineral powder to form red mud bricks;
the pressing and shaping equipment 14 is connected to one side of the red mud mixing seat 13, and the pressing and shaping equipment 14 can be used for pressing and shaping the red mud brick material at high pressure through a die;
the preheating evaporator 2 is arranged outside the pressing shaping equipment 14, the pressed red mud brick blanks enter the preheating evaporator 2, and the preheating evaporator 2 preheats the red mud brick blanks and removes water in the brick blanks; in the preheating evaporator, the red mud bricks gradually evaporate water in the brick body mainly through the gradual temperature rise, so that the water content in the brick body is reduced. This prevents explosion and cracks in the surface of the brick body caused by sudden evaporation of water at high temperature, and in addition, the preheating evaporator 2 helps to improve the structure and strength of the brick body. In the preheating process, organic matters and inorganic matters in the brick body can be subjected to chemical reaction to generate a bonding agent, so that particles in the brick body are better combined together. The preheating can also reduce the internal stress in the brick body, which is beneficial to the shrinkage and deformation control of the brick body, thereby reducing the cracking and deformation of the brick body in the sintering process;
a sintering kiln 15 for heating the preheated red mud brick blanks at high temperature to combine the red mud brick blanks and form a firm brick body;
wherein the preheating evaporator 2 is communicated with the dust remover 12 so as to enhance the ventilation effect of the air in the preheating evaporator 2, and a ventilation kiln (not shown) is arranged outside the sintering kiln 15.
In this embodiment, the preheating evaporator 2 includes:
a preheating tank 21;
a hoisting and transferring mechanism 3 which is arranged in the preheating tank 21 in an overhead manner;
the heat flow tank 23 is arranged at one side of the preheating tank 21, the upper end of the heat flow tank 23 is communicated with the preheating tank 21 through a connecting pipe 24, a reflux tank 22 is further arranged at one side of the heat flow tank 23, a transfer pipe 26 is arranged outside the reflux tank 22, and one end of the transfer pipe 26 is connected below the preheating tank 21, so that a circulating flow space is formed among the preheating tank 21, the heat flow tank 23 and the reflux tank 22; thereby improving the energy utilization rate and saving the energy consumption;
a waste heat pipe 25 transversely connected to one side of the reflow tank 22 for collecting and treating the recovered sintering kiln waste heat;
the temperature control and adjustment assembly 4 is arranged in the preheating tank 21 and divides the preheating tank 21 into a plurality of preheating temperature chambers, wherein each preheating temperature chamber can be set with proper temperature according to the requirement, so that the excessively high or excessively low temperature is avoided, and the waste of energy sources is reduced; and a directional heat supply mechanism 5 arranged outside the preheating tank 21 and at one side close to the heat flow tank 23.
As a preferred embodiment, the temperature control adjusting assembly 4 includes:
an inner ring pipe 41 coaxially fixed in the preheating tank 21, wherein an annular flow bin is formed between the inner ring pipe 41 and the preheating tank 21;
the inner flow blocking piece 42 is embedded and fixed in the annular flow bin left and right and divides the annular flow bin into two independent bins 43 up and down;
the exhaust fan seats 46 are arranged in the annular flowing bin and are positioned in the independent bin 43 above the annular flowing bin, and the exhaust fan seats 46 work at different rotation speed intensities, so that the temperature regulation and control are convenient;
the partition plate 47 is embedded and fixed in the inner ring pipe 41 so as to form independent preheating temperature chambers, the exhaust fan seats 46 are arranged in one-to-one correspondence with the preheating temperature chambers, rubber heat insulation curtains 48 are arranged in the partition plate 47, and the hanging and transporting mechanism 3 can penetrate through the rubber heat insulation curtains 48, so that red mud brick blanks can sequentially enter the preheating temperature chambers; and the deflector 45 is embedded and fixed in the annular flowing bin and is positioned in the independent bin 43 at the opposite lower part, the cross section of the deflector 45 is of an arc structure, and a plurality of air flow holes 44 are formed in the deflector 45, that is, high-temperature heat flow in the heat flow tank 23 can be introduced into each preheating temperature cavity in the inner ring pipe 41 through the exhaust fan seat 46, then discharged outwards through the air flow holes 44 on the deflector 45 and introduced into the transfer pipe 26, and the air flow is re-conveyed into the reflux tank 22 through the transfer pipe 26, wherein dust can be filtered by the dust remover 12.
In this embodiment, the partition plate 47 is two in arrangement, and the preheating temperatures in the three preheating temperature chambers formed correspondingly can be in an ascending trend towards the side close to the directional heat supply mechanism 5, where the red mud brick blanks can be continuously preheated in each preheating temperature chamber, that is, the three preheating temperature chambers can be preheated at different temperatures, and the three preheating temperature chambers are sequentially:
low temperature zone: the low temperature zone is the initial stage of the preheating of the green red mud bricks, and is used for gradually heating the green red mud bricks and promoting the evaporation of water. The temperature in the low temperature zone is typically in the range of about 100 ℃ to 300 ℃; medium and low temperature region: the middle-low temperature zone is a main stage of preheating the green brick of the red mud, and is used for further improving the temperature of the green brick and promoting the reaction of the bonding agent and the drying of the brick body, and the temperature range of the middle-low temperature zone is generally 300-400 ℃; medium and high temperature region: the temperature of the green bricks can be raised to be close to the sintering temperature required finally, the temperature range of the medium-high temperature area is generally 400-600 ℃, the red mud green bricks sequentially enter each preheating temperature cavity, heat energy is recycled, energy consumption can be further saved, in particular, each green brick is heated more uniformly in the preheating process, each preheating temperature cavity can be independently controlled according to the requirement, the temperature gradient in the green brick body is reduced, the preheating effect is improved, and meanwhile, after the green bricks in one preheating temperature cavity are completely preheated, the green bricks can be moved to the next temperature cavity for preheating, so that the continuous preheating process flow is realized. Therefore, the production efficiency can be improved, the productivity can be increased, the production period can be reduced, and the stability of the brick body can be improved.
In this embodiment, the hanging and transferring mechanism 3 includes:
a fixed rail frame 31 horizontally fixed and overhead in the preheating tank 21, wherein a driving wheel seat 32 is arranged on the fixed rail frame 31;
a lifter fixed under the driving wheel seat 32;
the carrying box 33 is arranged and fixed below the lifting device and is used for placing a plurality of red mud brick blanks.
In this embodiment, the cross section of the fixed rail frame 31 is in a straight slot structure, and an inlet guide rail and an outlet guide rail are further detachably arranged outside the fixed rail frame 31, that is, the red mud brick blanks can be circulated into each preheating temperature cavity along the fixed rail frame 31 with the straight slot structure, so that the effects of gradual heating-gradual cooling-gradual heating again-gradual cooling again … … are obvious, and the reciprocating type preheating temperature cycle is formed:
1. promoting evaporation of water: the red mud brick blank contains a certain amount of water, and the evaporation of the water in the red mud brick blank can be promoted by gradually heating. The gradual temperature rise can gradually evaporate the water in the red mud brick blank, reduce the water content and facilitate the drying and stabilization of the inside of the red mud brick blank.
2. Preventing cracking and deformation: in the preheating process of the red mud brick blank, the temperature change can cause the expansion and contraction of the inside of the red mud brick blank, and the stress and the temperature gradient of the inside of the red mud brick blank can be reduced by adopting a gradual heating and cooling mode. Thus, the cracking and deformation of the red mud brick can be effectively prevented, and the quality and stability of the brick body are ensured.
3. Promote binder reaction: binding agents in the red mud brick blank, such as clay minerals in clay, can undergo a binding reaction at a proper temperature to form a brick body structure. Through the circulation process of gradually heating up and cooling down, the reaction of the bonding agent can be promoted, and the bonding force and stability of the brick body are enhanced.
4. And (3) uniformly preheating: the uniform preheating of the red mud brick blank can be realized by the temperature circulation preheating. The gradual heating and cooling process can lead the heat to be gradually conducted to each part of the red mud brick blank, reduce the phenomenon that the heat is concentrated on the surface or locally, and realize more uniform preheating effect. The temperature cycle preheating process is beneficial to improving the quality and stability of the red mud bricks.
As a preferred embodiment, the directional heating mechanism 5 includes:
an air flow tank 51;
an air supply cover 52 fixed on one side of the air flow tank 51, wherein a plurality of air supply channels corresponding to the carrying case 33 are arranged on the air supply cover 52 for vertically conveying heat flow to the carrying case 33; and a control and regulating valve 53, which is disposed between the air supply cover 52 and the air flow tank 51, that is, when the red mud brick blank is conveyed to the air supply cover 52, the air flow tank 51 supplies heat laterally to the red mud brick blank, and performs targeted preheating, thereby improving preheating uniformity and avoiding that the bottom of the brick blank cannot be heated.
In this embodiment, a plurality of placing recesses are provided in the carrying case 33 for shaping and placing red mud bricks, an overhead hollow plate 36 is fixed in each of the placing recesses, the cross section of the overhead hollow plate 36 is in a U-shaped structure, an air flow channel 35 is provided below the carrying case 33, and the air flow channel 35 is correspondingly communicated with each of the placing recesses; especially for thicker red mud brick blanks, a layer-by-layer preheating method is adopted by the directional heat supply mechanism 5, the red mud brick blanks on the upper layer or surface are preheated by the ambient air flow in the preheating temperature cavity, and then the red mud brick blanks are gradually preheated towards the lower layer or inside by the directional heat supply mechanism 5. Therefore, the problems of insufficient evaporation of water or incomplete formation of binding agent in the red mud brick blank can be avoided, and the preheating uniformity is improved.
Specifically, the crusher base 1 breaks the main body of the exploited red mud stone and sends the broken red mud stone into the red mud mixing base 13 to be mixed to form red mud brick materials, the red mud brick materials are pressed by pressing shaping equipment to form red mud brick blanks, the red mud brick blanks are preheated by a preheating evaporator before sintering and moisture in the brick blanks is removed, the red mud brick blanks can be circulated into each preheating temperature cavity along the fixed rail frame 31, so that the temperature circulation preheating is formed by gradual heating-gradual cooling-gradual heating again-gradual cooling … …, and the directional heating mechanism 5 in a middle-high temperature area can synchronously preheat the lower layer or the inner part of the brick blanks, so that the preheating uniformity is improved.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a imitative stone red mud brick sintering production system which characterized in that, it includes:
the crusher base (1) is used for crushing the main body of the red mud stone blocks mined from the red mud ores (11);
the dust remover (12) is communicated with the crusher seat (1) through an exhaust fan, the dust remover (12) can recycle red mud dust generated by crushing, and an exhaust barrel is arranged outside the dust remover (12);
the red mud mixing seat (13) is communicated with the material conveying end of the crusher seat (1), and crushed red mud particles enter the red mud mixing seat (13) to be mixed with water by a plurality of mineral powder to form red mud bricks;
the pressing and shaping equipment (14) is connected to one side of the red mud mixing seat (13), and the pressing and shaping equipment (14) can be used for pressing and shaping red mud bricks at high pressure through a die;
the preheating evaporator (2) is arranged outside the pressing shaping equipment (14), the pressed red mud brick blanks enter the preheating evaporator (2), and the preheating evaporator (2) preheats the red mud brick blanks and removes water in the brick blanks;
a sintering kiln (15) for heating the preheated red mud brick blanks at high temperature to combine the red mud brick blanks and form a firm brick body;
wherein the preheating evaporator (2) is communicated with the dust remover (12) so as to enhance the ventilation effect of air in the preheating evaporator (2), and a ventilation kiln is arranged outside the sintering kiln (15);
the preheating evaporator (2) comprises:
a preheating tank (21);
a hoisting and transferring mechanism (3) which is arranged in the preheating tank (21) in an overhead manner;
the hot-flow tank (23) is arranged on one side of the preheating tank (21), the upper end of the hot-flow tank (23) is communicated with the preheating tank (21) through a connecting pipe (24), one side of the hot-flow tank (23) is also provided with a backflow tank (22), a transfer pipe (26) is arranged outside the backflow tank (22), and one end of the transfer pipe (26) is connected below the preheating tank (21), so that a circulating flow space is formed among the preheating tank (21), the hot-flow tank (23) and the backflow tank (22);
the waste heat pipe (25) is transversely connected to one side of the reflux tank (22) and is used for collecting and treating the waste heat of the recovered sintering kiln (15);
the temperature control adjusting assembly (4) is arranged in the preheating tank (21) and divides the preheating tank (21) into a plurality of preheating temperature chambers; and a directional heat supply mechanism (5) arranged outside the preheating tank (21) and close to one side of the heat flow tank (23);
the temperature control adjusting assembly (4) comprises:
an inner ring pipe (41) coaxially fixed in the preheating tank (21), and an annular flow bin is formed between the inner ring pipe (41) and the preheating tank (21);
the inner flow blocking piece (42) is embedded and fixed in the annular flow bin left and right, and divides the annular flow bin into two independent bins (43) up and down;
the exhaust fan seats (46) are arranged in the annular flowing bin and are positioned in the independent bin (43) above the annular flowing bin, and the exhaust fan seats (46) work at different rotational speed intensities;
the separation plates (47) are embedded and fixed in the inner annular pipe (41) so as to form independent preheating temperature chambers, the exhaust fan seats (46) are arranged in one-to-one correspondence with the preheating temperature chambers, rubber heat insulation curtains (48) are arranged in the separation plates (47), and the hanging and transporting mechanism (3) can penetrate through the rubber heat insulation curtains (48) so that red mud brick blanks can sequentially enter the preheating temperature chambers; the guide plate (45) is embedded and fixed in the annular flowing bin and is positioned in the independent bin (43) which is relatively arranged below the annular flowing bin, the cross section of the guide plate (45) is of an arc-shaped structure, and a plurality of air flow holes (44) are formed in the guide plate (45);
the separation plates (47) are two arranged in a row, and the preheating temperature in the three preheating temperature chambers formed correspondingly can be in an ascending trend towards one side close to the directional heat supply mechanism (5), wherein the red mud brick blanks can be continuously conveyed and preheated in each preheating temperature chamber.
2. A stone-like red mud brick sintering production system according to claim 1, characterized in that the hoisting and transporting mechanism (3) comprises:
a fixed rail frame (31) horizontally fixed and overhead in the preheating tank (21), wherein a driving wheel seat (32) is arranged on the fixed rail frame (31);
the lifting device is fixed below the driving wheel seat (32);
the carrying boxes (33) are fixedly arranged below the lifting device and are used for placing a plurality of red mud brick blanks.
3. The stone-like red mud brick sintering production system according to claim 2, wherein the cross section of the fixed rail frame (31) is in a straight slot structure, and an inlet guide rail and an outlet guide rail are detachably arranged outside the fixed rail frame (31).
4. A stone-like red mud brick sintering production system according to claim 2, characterized in that the directional heating mechanism (5) comprises:
an airflow tank (51);
an air supply cover (52) fixed on one side of the air flow tank (51), wherein a plurality of air supply channels corresponding to the carrying box (33) are arranged on the air supply cover (52) and are used for vertically conveying heat flow to the carrying box (33); and a control regulating valve (53) provided between the blower cover (52) and the airflow tank (51).
5. The stone-like red mud brick sintering production system according to claim 4, wherein a plurality of placing concave positions are formed in the carrying box (33) and used for shaping and placing red mud brick blanks, overhead hollow plates (36) are overhead fixed in the placing concave positions, the cross section of each overhead hollow plate (36) is of a U-shaped structure, an air flow channel (35) is arranged below the carrying box (33), and the air flow channels (35) are correspondingly communicated with each placing concave position.
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| CN116728581A (en) | 2023-09-12 |
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