CN209371763U - A kind of tunnel oven for bauxite roasting - Google Patents
A kind of tunnel oven for bauxite roasting Download PDFInfo
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- CN209371763U CN209371763U CN201920036457.6U CN201920036457U CN209371763U CN 209371763 U CN209371763 U CN 209371763U CN 201920036457 U CN201920036457 U CN 201920036457U CN 209371763 U CN209371763 U CN 209371763U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a kind of tunnel ovens for bauxite roasting, it include tunnel oven ontology, the tunnel oven ontology is integrally formed formula domes by tunnel basis, kiln body and Yao Ding, and track is equipped in tunnel basis, and is equipped with the kiln car that can be moved in tunnel oven with track in orbit；The tunnel oven is divided into preheating zone, clinkering zone and cooling zone, is equipped with gas nozzle and igniter in the kiln body medial surface of preheating zone and clinkering zone, is equipped with temperature sensor and pressure sensor in the kiln body and kiln top medial surface of preheating zone, clinkering zone and cooling zone；It further include having smoke exhaust fan, combustion fan, taking out air-heater, controller and natural gas line, controller is electrically connected with gas nozzle, igniter, temperature sensor, pressure sensor, smoke exhaust fan, combustion fan and pumping air-heater respectively.Using tunnel oven described in the utility model, the needs of large-scale batch production are able to satisfy, have structure simple, it is easy for operation, it is suitble to promote and apply.
Description
Technical field
The utility model relates to bauxite roasting apparatus technical fields, specifically a kind of to roast for bauxite
Tunnel oven.
Background technique
The main ingredient of bauxite is aluminium oxide, can be widely applied to refractory industry, various materials bonded abrasive tool,
Coated abrasive article or abrasive pastes etc., it is an indispensable industry again in modernization of the country construction, and Brown Alundum is with high-quality
Bauxite is made in electric arc through 2000 degree or more high melts of raw material, anthracite, iron filings.Machined crushing, shaping,
Magnetic separation de-iron is sieved into a variety of granularities, and quality is fine and close, hardness is high, particle shape glomeration, is suitable for manufacture ceramics, resin Gao Gu
Tie grinding tool and grinding, polishing, sandblasting, hot investment casting etc., it may also be used for manufacture high grade refractory.The smelting of bauxite belongs to
Ore-smelting electric furnace smelting process is smelted usually using melting, and furnace body is the important component of alloy holding furnace.
Tunnel oven is usually a long linear tunnel, and fixed wall and vault, bottom paving are arranged at two sides and top
If track on run kiln car.Combustion apparatus is located at the on both sides of the middle of tunnel oven, constitutes fixed clinkering zone, and burning generates
High-temperature flue gas under the action of tunnel oven front end chimney or air-introduced machine, flowed along tunnel to kiln hood direction, while step by step
Preheating enters the product in kiln, this section constitutes the preheating zone of tunnel oven.Cold wind, cooling tunnel are blasted in the kiln tail of tunnel oven
Latter section of product in kiln, the cold wind blasted flow through product after being heated, then extract out and be sent into drier as drying green compact
Heat source, this section just constitute the cooling zone of tunnel oven.Due to tunnel oven, because producing, serialization, the period is short, yield is big, quality
High advantage is widely used in production.Still there is problem, tunnel in use in the tunnel oven largely used at present
The heat dissipation of kiln internal temperature is very fast, and the consumption of fuel is larger, and outside wall temperature is higher, and operator can accidentally be burned；And now
Mostly using coal dust as fuel, coal dust sprays into tunnel oven not to be dispersed the tunnel oven used, cannot rapidly and thoroughly be fired
It burns, wastes mass energy, and many times people be that increase efficiency of combustion is added to various catalyst, effect is simultaneously in fact
It is not that clearly, and catalyst price is also abnormal expensive；Meanwhile existing tunnel oven can not be produced according to actual processing
The needs of product adjust kiln temperature, can not monitor kiln temperature at any time, especially need in preheating zone first by production to be processed
Product carry out the pre-heat treatment, if temperature is excessively high when preheating, product can generate crack, influence product quality.Therefore, in order to full
The needs of sufficient large-scale batch production, it is necessary to existing tunnel oven be improved, to reduce cost, improve its production effect
Rate.
Utility model content
The problem of the technical problems to be solved in the utility model is for background technique provides a kind of structure letter
It is single, there is the tunnel kiln equipment automatically controlled, specifically a kind of tunnel oven for bauxite roasting.
In order to solve the above technical problems, the technology employed by the present utility model is it is a kind of for bauxite roasting
Tunnel oven, includes tunnel oven ontology, controller and natural gas line, the tunnel oven ontology by tunnel basis, be located at tunnel
The kiln body of basic two sides and the kiln top above kiln body are integrally formed formula domes, and the tunnel basis uses reinforced concrete
Soil is made as integral slab shape structure in advance, and track is equipped in the tunnel basis, and is equipped with kiln car, the kiln car on the track
It can be moved in tunnel oven with track；It is equipped with fireprotection layer in the medial surface of the kiln body, lateral wall is equipped with insulating layer, the tunnel
Kiln is divided into preheating zone, clinkering zone and cooling zone, is distributed with along its length in the kiln body medial surface of the preheating zone and clinkering zone
Multiple gas nozzles and the igniter matched with gas nozzle, in the kiln body of the preheating zone, clinkering zone and cooling zone
Multiple temperature sensor and pressure sensor are distributed in side and kiln top medial surface along its length；Kiln body in the preheating zone
On be distributed with multiple smoke outlets along its length, the position of the corresponding smoke outlet is equipped with smoke discharging pipe, institute on the outside of the kiln body
The output end for stating smoke discharging pipe is equipped with smoke exhaust fan, extracts the flue gas in preheating zone out by the smoke exhaust fan；In the burning
It is equipped with the combustion-supporting channel communicated with the gas nozzle at the kiln body of band, the position in the corresponding combustion-supporting channel on the outside of the kiln body
Equipped with comburent air duct, the input terminal of the comburent air duct is equipped with combustion fan, by the combustion fan to combustion gas
Fresh air is inputted in nozzle, adjusts the air-fuel ratio of natural gas and air；Air intake passage, institute are equipped in the kiln body of the cooling zone
The position for stating the corresponding air intake passage on the outside of kiln body is equipped with intake stack, and the input terminal of the intake stack, which is equipped with, takes out hot wind
Machine extracts the high temperature air in cooling zone out by the pumping air-heater；In the tunnel, set outer body is additionally provided with controller
And natural gas line, the gas nozzle are communicated with natural gas line, the controller respectively with gas nozzle, igniter, temperature
It spends sensor, pressure sensor, smoke exhaust fan, combustion fan and takes out air-heater electric connection.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein in the preheating zone
Kiln body and kiln top inner wall in be additionally provided with multiple disturbance air ports along its length, the corresponding disturbance air port on the outside of the kiln body
Position be equipped with disturbance air hose, it is described disturbance air hose input terminal be equipped with air blower, it is defeated into preheating zone by the air blower
Enter high-speed air, the flue gas in preheating zone is made to generate disturbance, reduces the temperature difference in-between in preheating zone, the air blower and control
Device processed is electrically connected.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein in the preheating zone
Kiln hood and kiln tail both ends design twice air curtain mechanism, the air curtain mechanism includes the spray being set in kiln body and kiln top
Hole, the position that the spray orifice is corresponded on the outside of the kiln body and kiln top are equipped with tracheae, input terminal and the air blower phase of the tracheae
It is logical, high-speed air is inputted into spray orifice by the air blower, kiln hood and kiln tail both ends in the preheating zone is made to form air curtain,
Flue gas is excessive in blocking preheating zone kiln and the outer cold air of kiln enters in kiln, and the air blower is frequency conversion fan.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein in the preheating zone
Kiln hood end be additionally provided with long-pending petticoat pipe, the output end of the long-pending petticoat pipe is communicated by smoke discharging pipe with smoke exhaust fan.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein the gas nozzle
And the igniter matched with gas nozzle is provided with two groups, every group of igniting for being equipped with 10-20 gas nozzle and matching
Device, gas nozzle and igniter between two groups are in upper and lower interlaced arrangement mode along the length direction of the preheating zone and clinkering zone
It is set in its kiln body medial surface.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein in the combustion-supporting sky
Pressure detecting instrument and flow detector, the pressure detecting instrument and flow detector point are equipped in feed channel and natural gas line
It is not electrically connected with the controller.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein the controller is
DCS Computer Integrated Control System, the smoke exhaust fan, combustion fan and pumping air-heater are frequency conversion fan.
Using a kind of tunnel oven for bauxite roasting described in the utility model, since the tunnel oven ontology is by tunnel
Road basis, kiln body and Yao Ding are integrally formed formula domes, and the tunnel oven is divided into preheating zone, clinkering zone and cooling zone, in institute
The kiln body medial surface of preheating zone and clinkering zone is stated equipped with gas nozzle and the igniter matched with gas nozzle, described pre-
The kiln body medial surface and kiln top medial surface in the torrid zone, clinkering zone and cooling zone are equipped with temperature sensor and pressure sensor；Exist simultaneously
Multiple smoke outlets are distributed in the kiln body of the preheating zone along its length, the position of the corresponding smoke outlet on the outside of the kiln body
Equipped with smoke discharging pipe, the output end of the smoke discharging pipe is equipped with smoke exhaust fan, and the cigarette in preheating zone is made by the smoke exhaust fan
Gas extraction；The combustion-supporting channel communicated with the gas nozzle, corresponding institute on the outside of the kiln body are equipped in the kiln body of the clinkering zone
The position for stating combustion-supporting channel is equipped with comburent air duct, and the input terminal of the comburent air duct is equipped with combustion fan, passes through institute
It states combustion fan and inputs fresh air into gas nozzle, adjust the air-fuel ratio of natural gas and air；In the kiln of the cooling zone
Body is equipped with air intake passage, and the position of the corresponding air intake passage is equipped with intake stack on the outside of the kiln body, the intake stack
Input terminal, which is equipped with, takes out air-heater, extracts the high temperature air in cooling zone out by the pumping air-heater；Ontology is covered in the tunnel
Outside is additionally provided with controller and natural gas line, and the gas nozzle is communicated with natural gas line, the controller respectively with combustion
Gas jets, igniter, temperature sensor, pressure sensor, smoke exhaust fan, combustion fan and pumping air-heater are electrically connected.Institute
Under the action of stating controller, the temperature and pressure in kiln can be monitored at any time by set temperature sensor and pressure sensor
Power, while the air-fuel ratio in comburent air duct and natural gas line can control by controller, the temperature in kiln is adjusted with this
Degree；Pressure and temperature in kiln are also adjustable by smoke exhaust fan, combustion fan and pumping air-heater simultaneously, to realize automatic control
System.Using tunnel oven described in the utility model, it is not only able to satisfy the needs of large-scale batch production, moreover it is possible to the energy is reduced,
Its production efficiency and product quality can be improved, have structure simple, it is easy for operation, it is suitble to promote and apply.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the structural representation of tunnel oven in the utility model；
Fig. 2 is the structure schematic diagram of the utility model.
It is as shown in the figure: 1- tunnel basis, 2- kiln body, 3- kiln top, 4- track, 5- kiln car, 6- gas nozzle, 7- igniter,
8- temperature sensor, 9- pressure sensor, 10- smoke exhaust fan, 11- comburent air duct, 12- combustion fan, 13- take out hot wind
Machine, 14- controller, 15- natural gas line, 16- air blower.
Specific embodiment
As depicted in figs. 1 and 2, a kind of tunnel oven for bauxite roasting described in the utility model, includes tunnel
Kiln ontology, the tunnel oven ontology is by tunnel basis 1, the kiln body 2 positioned at 1 two sides of tunnel basis and the kiln above kiln body 2
Top 3 is integrally formed formula domes, and the tunnel basis 1 is made as integral slab shape structure using armored concrete in advance, in the tunnel
It is equipped with track 4 in road basis 1, and is equipped with kiln car 5 on the track 4, the kiln car 5 can move in tunnel oven with track 4；
The kiln body 2 is made of steel structure frame, masonry bracket and furnace lining masonry, wherein the steel structure frame is used with channel steel, angle
Fashioned iron based on steel and square tube is welded, to guarantee the intensity of kiln body 2；And masonry bracket using fashioned iron and welded steel plate and
At；Furnace lining masonry carries out material selection according to operating temperature in kiln, and kiln wall is respectively by different using temperature along its length
MG28, MG26, MG23 mullite heat insulating brick and high-alumina insulated brick, clay insulating brick, aluminium silicate fiber peacekeeping calcium silicate board composition.Institute
Kiln top 3 is stated as hanging flat-tope structure, selects and is formed with 2 phase material of kiln body；And it is equipped with fireprotection layer in the medial surface of the kiln body 2,
Lateral wall is equipped with the insulating layer being made of thermal insulation board, and the thermal insulation board uses the compression moulding of 1.5mm cold-rolled steel sheet, is fixed on kiln body
On 2 steel structure frame.Wherein the tunnel oven is divided into preheating zone, clinkering zone and cooling zone, in the preheating zone and clinkering zone
2 medial surface of kiln body multiple gas nozzles 6 are distributed with along its length and are matched with gas nozzle 6 igniter 7, in institute
Multiple temperature sensing are distributed in 2 medial surface of kiln body and 3 medial surface of kiln top for stating preheating zone, clinkering zone and cooling zone along its length
Device 8 and pressure sensor 9；Multiple smoke outlets are distributed with along its length in the kiln body 2 of the preheating zone, outside the kiln body 2
The position that side corresponds to the smoke outlet is equipped with smoke discharging pipe, and the output end of the smoke discharging pipe is equipped with smoke exhaust fan 10, passes through institute
Stating smoke exhaust fan 10 extracts the flue gas in preheating zone out；It is equipped in the kiln body 2 of the clinkering zone and communicates with the gas nozzle 6
Combustion-supporting channel, the position that the combustion-supporting channel is corresponded on the outside of the kiln body 2 are equipped with comburent air duct 11, the combustion-aid air pipe
The input terminal in road 11 is equipped with combustion fan 12, inputs fresh air into gas nozzle 6 by the combustion fan 12, adjusts day
The air-fuel ratio of right gas and air；It is equipped with air intake passage in the kiln body 2 of the cooling zone, corresponds to the air inlet on the outside of the kiln body 2
The position in channel is equipped with intake stack, and the input terminal of the intake stack, which is equipped with, takes out air-heater 13, passes through the pumping air-heater 13
Extract the high temperature air in cooling zone out；In the tunnel, set outer body is additionally provided with controller 14 and natural gas line 15, institute
Gas nozzle 6 is stated to communicate with natural gas line 15, the controller 14 respectively with gas nozzle 6, igniter 7, temperature sensor
8, pressure sensor 9, smoke exhaust fan 10, combustion fan 12 and pumping air-heater 13 are electrically connected.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein in the preheating zone
Kiln body 2 and kiln top 3 inner wall in be additionally provided with multiple disturbance air ports along its length, correspond to the disturbance on the outside of the kiln body 2
The position in air port is equipped with disturbance air hose, and the input terminal of the disturbance air hose is equipped with air blower 16, by the air blower 16 to pre-
High-speed air is inputted in tropical, the flue gas in preheating zone is made to generate disturbance, reduces the temperature difference in-between, the drum in preheating zone
Blower 16 and controller 14 are electrically connected.Twice air curtain mechanism is designed in the kiln hood of the preheating zone and kiln tail both ends simultaneously,
The air curtain mechanism includes the spray orifice being set in kiln body 2 and kiln top 3, corresponds to the spray on the outside of the kiln body 2 and kiln top 3
The position in hole is equipped with tracheae, and the input terminal of the tracheae is communicated with air blower 16, inputted by the air blower 16 into spray orifice
High-speed air makes kiln hood in the preheating zone and kiln tail both ends form air curtain, stop in the kiln of preheating zone flue gas excessive and kiln outside
Cold air enters in kiln, and the air blower 16 is frequency conversion fan.In addition, the kiln hood end in the preheating zone is additionally provided with long-pending petticoat pipe,
The output end of the long-pending petticoat pipe is communicated by smoke discharging pipe with smoke exhaust fan 10.By set product petticoat pipe, can make to overflow
Partial fume by smoke exhaust fan 10 enter smoke evacuation system in, to avoid flue gas excessive.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein the gas nozzle 6
And the igniter 7 matched with gas nozzle 6 is provided with two groups, every group of point for being equipped with 10-20 gas nozzle 6 and matching
Firearm 7, wherein the quantity of the gas nozzle 6 and igniter 7 can carry out flexible setting according to the length of preheating zone and clinkering zone,
It is required that the gas nozzle 6 and igniter 7 between two groups are in upper and lower interlaced arrangement along the length direction of the preheating zone and clinkering zone
Mode is set in its 2 medial surface of kiln body, wherein the gas nozzle 6 is rationally true according to the heat demand in different temperatures region
Its fixed burner power, makes product be heated up according to scenario earthquake.Gas nozzle 6 is efficiently fired using fuel gas high-speed burner
It burns, burnup is effectively reduced in high temperature combustion supporting air burning.Meanwhile in order to observe comburent air duct 11 and natural gas tube at any time
Pressure and traffic conditions in road 15, be equipped in the comburent air duct 11 and natural gas line 15 pressure detecting instrument and
Flow detector, the pressure detecting instrument and flow detector are electrically connected with the controller 14 respectively.
Further, a kind of tunnel oven for bauxite roasting described in the utility model, wherein the controller 14
For DCS Computer Integrated Control System, the smoke exhaust fan 10, combustion fan 12 and pumping air-heater 13 are frequency conversion fan.Its
Described in DCS Computer Integrated Control System be computer DCS control, controller is controlled using general DCS in existing market,
Temperature, pressure and atmosphere etc. in kiln operational process can be carried out automatically controlling.And smoke exhaust fan 10, combustion fan 12 and pumping
Air-heater 13 is frequency conversion fan, can carry out flexible modulation according to the pressure in kiln using frequency conversion fan.
In actual use, using it is described in the utility model it is a kind of for bauxite roasting tunnel oven, due to
The tunnel oven ontology is integrally formed formula domes by tunnel basis 1, kiln body 2 and kiln top 3, and the tunnel oven is divided into preheating
Band, clinkering zone and cooling zone are equipped with gas nozzle 6 and and gas injection in 2 medial surface of kiln body of the preheating zone and clinkering zone
The igniter 7 that mouth 6 matches is equipped with temperature in 2 medial surface of kiln body and kiln top medial surface of the preheating zone, clinkering zone and cooling zone
Spend sensor 8 and pressure sensor 9；Multiple smoke outlets, institute is distributed with along its length in the kiln body 2 of the preheating zone simultaneously
The position that the smoke outlet is corresponded on the outside of kiln body 2 is stated equipped with smoke discharging pipe, the output end of the smoke discharging pipe is equipped with smoke exhaust fan
10, the flue gas in preheating zone is extracted out by the smoke exhaust fan 10；It is equipped with and the gas injection in the kiln body 2 of the clinkering zone
The combustion-supporting channel that mouth communicates, the position that the combustion-supporting channel is corresponded on the outside of the kiln body 2 is equipped with comburent air duct 11, described to help
The input terminal for firing air pipeline 11 is equipped with combustion fan 12, and fresh sky is inputted into gas nozzle by the combustion fan 12
Gas adjusts the air-fuel ratio of natural gas and air；It is equipped with air intake passage in the kiln body 2 of the cooling zone, is corresponded on the outside of the kiln body 2
The position of the air intake passage is equipped with intake stack, and the input terminal of the intake stack, which is equipped with, takes out air-heater 13, passes through the pumping
Air-heater 13 extracts the high temperature air in cooling zone out；In the tunnel, set outer body is additionally provided with controller 14 and natural gas tube
Road 15, the gas nozzle 6 are communicated with natural gas line 15, the controller 14 respectively with gas nozzle 6, igniter 7, temperature
Sensor 8, pressure sensor 9, smoke exhaust fan 10, combustion fan 12 and pumping air-heater 13 are electrically connected.In the controller 14
Under the action of, the temperature and pressure in kiln can be monitored by set temperature sensor 8 and pressure sensor 9 at any time, simultaneously
It by controller 14 can control the air-fuel ratio in comburent air duct 14 and natural gas line 15, the temperature in kiln adjusted with this
Degree；Pressure and temperature in kiln are also adjustable by smoke exhaust fan 10, combustion fan 12 and pumping air-heater 13 simultaneously, to realize
It automatically controls.
In conclusion the needs of large-scale batch production are not only able to satisfy using tunnel oven described in the utility model,
The energy can also be reduced, its production efficiency and product quality can be improved, has structure simple, easy for operation, suitable popularization is answered
With.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should all include being within the protection scope of the utility model.
Claims (7)
1. it is a kind of for bauxite roasting tunnel oven, it is characterised in that: include tunnel oven ontology, controller (14) and naturally
Feed channel (15), the tunnel oven ontology by tunnel basis (1), be located at tunnel basis (1) two sides kiln body (2) and be set to kiln body
(2) the kiln top (3) above is integrally formed formula domes, and the tunnel basis (1) is made as integral slab using armored concrete in advance
Shape structure is equipped with track (4) in the tunnel basis (1), and is equipped with kiln car (5) on the track (4), the kiln car
(5) it can be moved in tunnel oven with track (4)；It is equipped with fireprotection layer in the medial surface of the kiln body (2), lateral wall is equipped with heat preservation
Layer, the tunnel oven is divided into preheating zone, clinkering zone and cooling zone, on kiln body (2) medial surface edge of the preheating zone and clinkering zone
The igniter (7) that length direction is distributed with multiple gas nozzles (6) and matches with gas nozzle (6), the preheating zone,
Multiple temperature sensors (8) are distributed in kiln body (2) medial surface and Yao Ding (3) medial surface of clinkering zone and cooling zone along its length
With pressure sensor (9)；Multiple smoke outlets, the kiln body (2) is distributed with along its length in the kiln body (2) of the preheating zone
The position that outside corresponds to the smoke outlet is equipped with smoke discharging pipe, and the output end of the smoke discharging pipe is equipped with smoke exhaust fan (10), leads to
Crossing the smoke exhaust fan (10) extracts the flue gas in preheating zone out；It is equipped with and the gas injection in the kiln body (2) of the clinkering zone
The position in the combustion-supporting channel that mouth (6) communicates, the corresponding combustion-supporting channel in kiln body (2) outside is equipped with comburent air duct
(11), the input terminal of the comburent air duct (11) is equipped with combustion fan (12), by the combustion fan (12) to combustion gas
Fresh air is inputted in nozzle (6), adjusts the air-fuel ratio of natural gas and air；Air inlet is equipped in the kiln body (2) of the cooling zone
The position in channel, the corresponding air intake passage in kiln body (2) outside is equipped with intake stack, and the input terminal of the intake stack is set
There are pumping air-heater (13), extracts the high temperature air in cooling zone out by the pumping air-heater (13)；Ontology is covered in the tunnel
Outside is additionally provided with controller (14) and natural gas line (15), and the gas nozzle (6) communicates with natural gas line (15), described
Controller (14) respectively with gas nozzle (6), igniter (7), temperature sensor (8), pressure sensor (9), smoke exhaust fan
(10), combustion fan (12) and pumping air-heater (13) are electrically connected.
2. a kind of tunnel oven for bauxite roasting according to claim 1, it is characterised in that: in the preheating zone
Multiple disturbance air ports are additionally provided in the inner wall of kiln body (2) He Yaoding (3) along its length, on the outside of the kiln body (2) described in correspondence
The position for disturbing air port is equipped with disturbance air hose, and the input terminal of the disturbance air hose is equipped with air blower (16), passes through the air blower
(16) high-speed air is inputted into preheating zone, the flue gas in preheating zone is made to generate disturbance, reduces temperature in-between in preheating zone
Difference, the air blower (16) and controller (14) are electrically connected.
3. a kind of tunnel oven for bauxite roasting according to claim 2, it is characterised in that: in the preheating zone
Twice air curtain mechanism is designed at kiln hood and kiln tail both ends, and the air curtain mechanism includes to be set in kiln body (2) He Yaoding (3)
Spray orifice, the position of the corresponding spray orifice is equipped with tracheae on the outside of the kiln body (2) He Yaoding (3), the input terminal of the tracheae with
Air blower (16) communicates, and high-speed air is inputted into spray orifice by the air blower (16), make kiln hood in the preheating zone and
Kiln tail both ends form air curtain, and flue gas is excessive in blocking preheating zone kiln and the outer cold air of kiln enters in kiln, and the air blower (16) is
Frequency conversion fan.
4. a kind of tunnel oven for bauxite roasting according to claim 1, it is characterised in that: in the preheating zone
Kiln hood end is additionally provided with long-pending petticoat pipe, and the output end of the long-pending petticoat pipe is communicated by smoke discharging pipe with smoke exhaust fan (10).
5. a kind of tunnel oven for bauxite roasting according to claim 1, it is characterised in that: the gas nozzle
(6) and with gas nozzle (6) igniter (7) matched is provided with two groups, every group be equipped with 10-20 gas nozzle (6) and
The igniter (7) matched, the length of gas nozzle (6) and igniter (7) between two groups along the preheating zone and clinkering zone
Direction is set in its kiln body (2) medial surface in upper and lower interlaced arrangement mode.
6. a kind of tunnel oven for bauxite roasting according to claim 1, it is characterised in that: in the combustion air
Pressure detecting instrument and flow detector, the pressure detecting instrument and flow inspection are equipped in pipeline (11) and natural gas line (15)
Instrument is surveyed to be electrically connected with the controller (14) respectively.
7. a kind of tunnel oven for bauxite roasting according to claim 1, it is characterised in that: the controller (14)
For DCS Computer Integrated Control System, the smoke exhaust fan (10), combustion fan (12) and pumping air-heater (13) are frequency conversion wind
Machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920036457.6U CN209371763U (en) | 2019-01-10 | 2019-01-10 | A kind of tunnel oven for bauxite roasting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920036457.6U CN209371763U (en) | 2019-01-10 | 2019-01-10 | A kind of tunnel oven for bauxite roasting |
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| CN112414115A (en) * | 2020-10-12 | 2021-02-26 | 江苏扬子新型材料科技有限公司 | Energy-saving jet fly ash ceramsite processing device |
| CN113267042A (en) * | 2021-05-31 | 2021-08-17 | 赣州科帕机电自动化有限公司 | Tunnel cave temperature control system |
| CN118293685A (en) * | 2024-05-08 | 2024-07-05 | 黄冈市华泰窑炉工业有限公司 | Downstream type tunnel kiln quick firing device |
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2019
- 2019-01-10 CN CN201920036457.6U patent/CN209371763U/en active Active
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| CN113267042A (en) * | 2021-05-31 | 2021-08-17 | 赣州科帕机电自动化有限公司 | Tunnel cave temperature control system |
| CN118293685A (en) * | 2024-05-08 | 2024-07-05 | 黄冈市华泰窑炉工业有限公司 | Downstream type tunnel kiln quick firing device |
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