CN221099372U - Energy-saving vertical preheater for bauxite calcination - Google Patents
Energy-saving vertical preheater for bauxite calcination Download PDFInfo
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- CN221099372U CN221099372U CN202322545550.9U CN202322545550U CN221099372U CN 221099372 U CN221099372 U CN 221099372U CN 202322545550 U CN202322545550 U CN 202322545550U CN 221099372 U CN221099372 U CN 221099372U
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- Prior art keywords
- preheating
- barrel
- bauxite
- calcination
- flue gas
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- 238000001354 calcination Methods 0.000 title claims abstract description 32
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003546 flue gas Substances 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000011229 interlayer Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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Abstract
The utility model discloses an alumina ore calcination energy-saving vertical preheater, which comprises a preheating barrel, wherein a sealing top cover is arranged at the top of the preheating barrel, a feed inlet and an electric stirrer are arranged on the sealing top cover, a discharge outlet is arranged at the bottom of the preheating barrel, a preheating space is arranged in the preheating barrel between the sealing top cover and the discharge outlet, a feeder is arranged at the bottom of the discharge outlet, one end of the feeder is sealed and penetrates through the inside of a calciner, a flue gas outlet is arranged at the top of the calciner, a high-temperature inlet is arranged at the lower end of one side of the preheating barrel and is connected with the flue gas outlet through a connecting pipe, and a low-temperature outlet is arranged at the upper end of one side of the preheating barrel. According to the utility model, a series of structures are arranged, the bauxite is calcined and preheated, the heat recovery and utilization of high-temperature flue gas generated during calcination are realized, the energy consumption of the bauxite for calcination can be reduced by preheating, the energy conservation is good, the high-temperature flue gas spirally rises and circulates in the spiral air channel, the preheating circulation space and the contact area are increased, and the preheating utilization rate is higher.
Description
Technical Field
The utility model relates to the technical field of calcination and preheating, in particular to an energy-saving vertical preheater for bauxite calcination.
Background
Bauxite is an important refractory material and is widely used in the metallurgical industry. Bauxite in the refractory industry is generally bauxite with Al2O3 content more than or equal to 48% and lower Fe2O3 content, and bauxite clinker is calcined bauxite. The calciner is a thermal equipment for heat-treating raw materials of carbon (such as coke and anthracite) at high temperature so as to improve the performance of the raw materials. The equipment is used for iron making, rare metal recovery, catalyst production, environment improvement and special chemical product production. During the calcination of bauxite, high temperature flue gas is produced.
At present, bauxite is calcined in a calciner, high-temperature flue gas generated in the calcining process carries abundant heat, low-temperature calcined materials are put in the calciner for calcining, and the heat absorbed by low temperature is more, so that the energy consumption generated by calcining is large, the high-temperature flue gas directly flows through the calcined materials, the contact area for preheating the materials is small, the preheating flowing space is small, and the preheating efficiency of the high-temperature flue gas is low.
Disclosure of utility model
The utility model aims to provide an bauxite calcination energy-saving vertical preheater for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an energy-conserving vertical pre-heater of bauxite calcination, includes the preheating barrel, the top of preheating barrel is equipped with sealed top cap, be equipped with feed inlet and electric mixer on the sealed top cap, the bottom of preheating barrel is equipped with the discharge gate, the inside preheating space that is equipped with of preheating barrel between sealed top cap and the discharge gate, the bottom of discharge gate is equipped with the feeder, the one end of feeder is sealed to run through the inside of locating the calciner, the top of calciner is equipped with the flue gas export, the lower extreme of preheating barrel one side is equipped with high temperature import, high temperature import is through connecting pipe and flue gas export connection, the upper end of preheating barrel one side is equipped with low temperature export.
Preferably, the preheating cylinder body comprises an outer heat insulation cylinder, an inner heat conduction cylinder and a preheating interlayer, the high-temperature inlet and the low-temperature outlet are both arranged on the outer heat insulation cylinder, the inner heat conduction cylinder arranged by a coaxial core is sleeved in the outer heat insulation cylinder, the space between the outer heat insulation cylinder and the inner heat conduction cylinder forms the preheating interlayer, high-temperature flue gas of the calciner enters the preheating interlayer from the high-temperature inlet, and a flow guide piece is arranged in the preheating interlayer.
Preferably, the guide piece is arranged by adopting a spiral guide plate, the outer side edge of the spiral guide plate is connected with the inner wall of the outer heat insulation cylinder, the inner side edge of the spiral guide plate is connected with the outer wall of the inner heat conduction cylinder, the spiral guide plate separates the preheating interlayer into a spiral air channel communicated with the high-temperature inlet and the low-temperature outlet, and high-temperature flue gas of the calciner spirally rises and circulates in the spiral air channel.
Preferably, the electric stirrer comprises a motor, a stirring rod and a helical blade, the stirring rod is arranged in the preheating cylinder, the top of the sealing top cover is provided with the motor, the output end of the motor is connected with the stirring rod through a coupler, and the helical blade is arranged on the stirring rod.
Preferably, the lower end of the preheating cylinder body is in a V-shaped structure, and the bottom of the stirring rod extends to the lower end of the inside of the preheating cylinder body.
Preferably, the feeder comprises a feeding cylinder, a feeding screw and a motor II, wherein the top of one end of the feeding cylinder is connected with the discharge port, the other end of the feeding cylinder is provided with an opening, one end of the feeding cylinder, which is provided with the opening, is arranged in the calciner, the feeding screw is arranged in the feeding cylinder, and one end of the feeding screw, which is far away from the opening, is connected with the output end of the motor II on the feeding cylinder through a coupler.
Preferably, the connecting pipe is arranged by adopting a heat preservation pipe, and the low-temperature outlet is connected with the bag-type dust remover through a pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the energy-saving vertical preheater for calcining the bauxite, the preheating interlayer between the outer heat-insulating cylinder and the inner heat-conducting cylinder is connected with the flue gas outlet of the calciner through the connecting pipe, and the high-temperature flue gas generated by the calciner is led into the preheating interlayer for preheating the calcination of the bauxite, so that the heat recovery and utilization of the high-temperature flue gas during the calcination are realized, the energy consumption for calcining the bauxite can be reduced, and the energy conservation is better.
2. This energy-conserving vertical pre-heater of bauxite calcination through setting up at the inside electric stirrer of preheating the barrel, preheats evenly, cooperates with the feeder, preheats the feed smoothly, sets up the spiral guide plate in preheating the intermediate layer between outer heat-insulating cylinder and interior heat-conducting cylinder, and spiral guide plate will preheat the intermediate layer inner space and separate into spiral wind passageway, and the high temperature flue gas of calciner is in spiral rising circulation in spiral wind passageway, increases and preheats circulation space and area of contact, and the preheating utilization ratio is higher.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of the preheating cylinder according to the present utility model;
FIG. 3 is a schematic view of the seal cap of the present utility model;
Fig. 4 is a schematic structural view of a spiral baffle in the present utility model.
In the figure: 1. preheating a cylinder; 11. an outer heat insulating cylinder; 12. an inner heat conduction cylinder; 13. preheating an interlayer; 14. a high temperature inlet; 15. a low temperature outlet; 16. a spiral deflector; 17. a helical wind channel; 2. sealing the top cover; 21. a feed inlet; 22. an electric stirrer; 3. a discharge port; 4. a feeder; 5. a connecting pipe; 6. a calciner.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; 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 utility model will be understood in specific cases by those of ordinary skill in the art.
Examples
As shown in fig. 1 to 4, the energy-saving vertical preheater for bauxite calcination in this embodiment comprises a preheating cylinder 1, the top of the preheating cylinder 1 is provided with a sealing top cover 2, the sealing top cover 2 is provided with a feed inlet 21 and an electric stirrer 22, the bottom of the preheating cylinder 1 is provided with a discharge outlet 3, a preheating space is arranged inside the preheating cylinder 1 between the sealing top cover 2 and the discharge outlet 3, the bottom of the discharge outlet 3 is provided with a feeder 4, one end of the feeder 4 is sealed and penetrates through the inside of the calciner 6, the top of the calciner 6 is provided with a flue gas outlet, the lower end of one side of the preheating cylinder 1 is provided with a high-temperature inlet 14, the high-temperature inlet 14 is connected with the flue gas outlet through a connecting pipe 5, the upper end of one side of the preheating cylinder 1 is provided with a low-temperature outlet 15, thereby realizing the recycling of calcined high-temperature flue gas heat, the preheating can reduce the energy consumption of bauxite calcination, the energy conservation is better, the preheating uniformity is improved, the preheating circulation space and the contact area are increased, and the preheating utilization ratio is higher.
Specifically, preheat barrel 1 includes outer heat-insulating cylinder 11, interior heat-conducting cylinder 12 and preheats intermediate layer 13, high temperature import 14 and low temperature export 15 all set up on outer heat-insulating cylinder 11, the interior cover of outer heat-insulating cylinder 11 is established by interior heat-conducting cylinder 12 that coaxial heart set up, space between outer heat-insulating cylinder 11 and the interior heat-conducting cylinder 12 forms preheats intermediate layer 13, the high temperature flue gas of calciner 6 gets into preheating intermediate layer 13 by high temperature import 14 in, the inside of preheating intermediate layer 13 is equipped with the water conservancy diversion spare, to preheating high temperature flue gas water conservancy diversion, high temperature flue gas heats the calcination material of low temperature in preheating intermediate layer 13.
Further, the guide piece is arranged by adopting a spiral guide plate 16, the outer side edge of the spiral guide plate 16 is connected with the inner wall of the outer heat insulation cylinder 11, the inner side edge of the spiral guide plate 16 is connected with the outer wall of the inner heat conduction cylinder 12, the spiral guide plate 16 separates the preheating interlayer 13 into a spiral air channel 17 communicated with the high-temperature inlet 14 and the low-temperature outlet 15, high-temperature flue gas of the calciner 6 spirally rises and circulates in the spiral air channel 17, and the circulating space for preheating the flue gas is increased.
Further, the electric stirrer 22 comprises a motor, a stirring rod and a helical blade, the stirring rod is arranged in the preheating cylinder body 1, the motor is arranged at the top of the sealing top cover 2, the output end of the motor is connected with the stirring rod through a coupler, the helical blade is arranged on the stirring rod, and materials in the preheating cylinder body 1 can be stirred, so that the preheating heating contact area of the materials in the preheating cylinder body 1 is larger, and the preheating is more uniform.
Further, the lower extreme of preheating barrel 1 is V type structure setting, and the bottom of puddler extends to the inside lower extreme setting of preheating barrel 1, in the material feeding calciner 6 in the convenient preheating barrel 1.
Further, the feeder 4 comprises a feeding cylinder, a feeding screw and a motor II, the top of one end of the feeding cylinder is connected with the discharge hole 3, the other end of the feeding cylinder is provided with an opening, one end of the feeding cylinder, which is provided with the opening, is arranged in the calciner 6, the feeding screw is arranged in the feeding cylinder, one end of the feeding screw, which is far away from the opening, is connected with the output end of the motor II on the feeding cylinder through a coupler, the feeder 4 feeds the material in the preheating cylinder 1 into the calciner 6, and the preheating feeding is continuous and smooth.
Furthermore, the connecting pipe 5 is arranged by adopting a heat preservation pipe, the heat preservation performance of the connecting pipe 5 is good, the heat dissipation of high-temperature flue gas is reduced, the low-temperature outlet 15 is connected with a bag-type dust remover through a pipeline, and the bag-type dust remover removes dust and filters the flue gas of the calciner.
The application method of the embodiment is as follows: the bauxite calcination material is added into the preheating barrel 1 through the feed inlet 21, high-temperature flue gas generated by calcination of the calciner 6 enters the preheating interlayer 13 between the outer heat insulation barrel 11 and the inner heat conduction barrel 12 through the high-temperature inlet 14 through the connecting pipe 5, a first motor on the electric stirrer 22 drives the stirring rod to rotate, the spiral blades stir the material in the preheating barrel 1, the internal space of the preheating interlayer 13 between the outer heat insulation barrel 11 and the inner heat conduction barrel 12 is separated into a spiral air channel 17 communicated with the high-temperature inlet 14 and the low-temperature outlet 15 through the spiral guide plate 16, the high-temperature flue gas enters the spiral air channel 17 of the preheating interlayer 13 through the high-temperature inlet 14, the high-temperature flue gas of the calciner 6 spirally rises in the spiral air channel 17 to circulate, the heat of the high-temperature flue gas is transferred through the inner heat conduction barrel 12 to preheat the material at low temperature, when the calciner 6 needs to be added with the material, the preheated material in the preheating barrel 1 is added into the calciner 6 through the feeder 4, the preheated flue gas enters the bag-type dust collector through the low-temperature outlet 15, the preheated flue gas can be more uniform, the energy-saving and the heat-saving and more smooth pre-heating area can be realized, the preheated, the heat utilization ratio can be more uniform, and the preheated and the heat consumption can be more realized, and the heat consumption can be more greatly increased, and the heat consumption can be used.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The utility model provides an energy-conserving vertical pre-heater of bauxite calcination, includes preheating barrel (1), its characterized in that: the top of preheating barrel (1) is equipped with sealed top cap (2), be equipped with feed inlet (21) and electric stirrer (22) on sealed top cap (2), the bottom of preheating barrel (1) is equipped with discharge gate (3), the inside preheating space that is equipped with of preheating barrel (1) between sealed top cap (2) and discharge gate (3), the bottom of discharge gate (3) is equipped with feeder (4), the one end seal of feeder (4) runs through the inside of locating calciner (6), the top of calciner (6) is equipped with the flue gas export, the lower extreme of preheating barrel (1) one side is equipped with high temperature import (14), high temperature import (14) are through connecting pipe (5) and flue gas exit linkage, the upper end of preheating barrel (1) one side is equipped with low temperature export (15).
2. The bauxite calcination energy-saving vertical preheater as set forth in claim 1, wherein: the preheating barrel body (1) comprises an outer heat insulation barrel (11), an inner heat conduction barrel (12) and a preheating interlayer (13), wherein a high-temperature inlet (14) and a low-temperature outlet (15) are arranged on the outer heat insulation barrel (11), the inner heat conduction barrel (12) arranged by a coaxial core is sleeved in the outer heat insulation barrel (11), the space between the outer heat insulation barrel (11) and the inner heat conduction barrel (12) forms the preheating interlayer (13), high-temperature flue gas of the calciner (6) enters the preheating interlayer (13) through the high-temperature inlet (14), and a flow guide piece is arranged in the preheating interlayer (13).
3. The bauxite calcination energy-saving vertical preheater as set forth in claim 2, wherein: the utility model discloses a calcination furnace, including calcination furnace, heat-insulating cylinder (11), air guide piece, spiral guide plate (16) are adopted, the outer side of spiral guide plate (16) is connected with the inner wall of outer heat-insulating cylinder (11), the inner side of spiral guide plate (16) is connected with the outer wall of interior heat-conducting cylinder (12), spiral guide plate (16) separate preheating intermediate layer (13) into spiral wind passageway (17) with high temperature import (14), low temperature export (15) intercommunication, the high temperature flue gas of calciner (6) spiral rising circulation in spiral wind passageway (17).
4. The bauxite calcination energy-saving vertical preheater as set forth in claim 1, wherein: the electric stirrer (22) comprises a motor, a stirring rod and a helical blade, the stirring rod is arranged in the preheating cylinder body (1), the motor is arranged at the top of the sealing top cover (2), the output end of the motor is connected with the stirring rod through a coupler, and the helical blade is arranged on the stirring rod.
5. The bauxite calcination energy-saving vertical preheater as set forth in claim 4, wherein: the lower extreme of preheating barrel (1) is V type structure setting, the bottom of puddler extends to the inside lower extreme setting of preheating barrel (1).
6. The bauxite calcination energy-saving vertical preheater as set forth in claim 1, wherein: the feeder (4) is composed of a feeding cylinder, a feeding screw and a second motor, the top of one end of the feeding cylinder is connected with the discharge port (3), the other end of the feeding cylinder is provided with an opening, one end of the feeding cylinder, which is provided with the opening, is arranged in the calciner (6), the feeding screw is arranged in the feeding cylinder, and one end of the feeding screw, which is far away from the opening, is connected with the output end of the second motor on the feeding cylinder through a coupler.
7. The bauxite calcination energy-saving vertical preheater as set forth in claim 1, wherein: the connecting pipe (5) is arranged by adopting a heat preservation pipe, and the low-temperature outlet (15) is connected with the bag-type dust collector through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322545550.9U CN221099372U (en) | 2023-09-19 | 2023-09-19 | Energy-saving vertical preheater for bauxite calcination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322545550.9U CN221099372U (en) | 2023-09-19 | 2023-09-19 | Energy-saving vertical preheater for bauxite calcination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221099372U true CN221099372U (en) | 2024-06-07 |
Family
ID=91317629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322545550.9U Active CN221099372U (en) | 2023-09-19 | 2023-09-19 | Energy-saving vertical preheater for bauxite calcination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221099372U (en) |
-
2023
- 2023-09-19 CN CN202322545550.9U patent/CN221099372U/en active Active
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