CN106702140B - A kind of molybdenum oxide baked for producing line - Google Patents
A kind of molybdenum oxide baked for producing line Download PDFInfo
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- CN106702140B CN106702140B CN201611140881.2A CN201611140881A CN106702140B CN 106702140 B CN106702140 B CN 106702140B CN 201611140881 A CN201611140881 A CN 201611140881A CN 106702140 B CN106702140 B CN 106702140B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/22—Rotary drums; Supports therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/22—Rotary drums; Supports therefor
- F27B7/24—Seals between rotary and stationary parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/33—Arrangement of devices for discharging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/38—Arrangements of cooling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a kind of molybdenum oxide baked for producing lines, including rotary kiln, heating system, feeding system, smoke processing system, the rotary kiln kiln body successively includes flame retardant coating from inside to outside, heat exchange layer and insulating layer, the heat exchanging air duct that the heat exchange layer surrounds between flame retardant coating and insulating layer, the rotary kiln feed end is equipped with rotary sealing appts, the rotary sealing appts are equipped with the fresh air inlet being connected to the heat exchanging air duct, the heat exchanging air duct is connected with the rotary kiln inner cavity, it further include material recovering system in the waste heat utilization system being connected to the heat exchanging air duct and flue gas, material recovering system includes lock wind blanking device and enclosed conveying device in the flue gas.Molybdenum oxide baked for producing line of the present invention realizes zero coal consumption energy-saving roasting, reduce production cost, high degree of automation reduces labor intensity, production process is hermetically sealed, without leak source, without fugitive dust, production environment improves comprehensively, and substantially increases product yield and material recovery rate.
Description
Technical field
The invention belongs to vulcanize molybdenum concentrate production molybdenum oxide technical field, and in particular to a kind of molybdenum oxide baked for producing line.
Background technique
Molybdenum is a kind of rare metal, it is extremely widely applied in electric appliance, particularly have in the production of special steel material.
In alloy smelting steel, suitable molybdenum element is added, steel alloy can be made to obtain many excellent physical properties, so that molybdenum
It is widely used in many steel of element.
Currently, 90% or more the molybdenum sulfide essence of domestic and international application first has to through roasting be oxidation by molybdenum sulfide desulfurization conversion
Molybdenum, the molybdenum oxide obtained after roasting are used to raw material of the Smelting Ferromolybdenum as production molybdenum steel, and after roasting obtained molybdenum trioxide and
Ammonium hydroxide reacts to obtain ammonium molybdate, and ammonium molybdate decomposes to obtain the molybdenum trioxide of high-purity, obtains the dioxy of high-purity with hydrogen reducing
Change molybdenum, continues the molybdenum powder for obtaining to make various molybdenum products with hydrogen reducing.
Molybdenum oxide is produced by raw material roasting of molybdenum concentrate, according to roasting apparatus difference, calcining molybdenum ore concentrate technique can be divided into instead
Furnace roasting, multiple hearth roasting, boiling roaster, Flash Smelting Furnace roasting, rotary kiln baking etc. are penetrated, above-mentioned roasting technique requires to use
External heat source provides roasting heat to guarantee going on smoothly for reaction, roasts heat generally by coal, oil, various coal gas, natural gas, electricity
Lamp external heat source provides.The roasting technique equipment for the molybdenum concentrate being widely used at present not only significantly consumes fuel or other energy, and
And because the oxygen deprivation flue gas that fuel combustion generates replaces air to provide oxidant to calcination, baking flue gas volume expansion is caused,
A large amount of high-temperature flue gas is discharged from kiln tail, takes away amount of heat.Meanwhile in molybdenum concentrate association more valuable resource rare element
Rhenium is walked with flue gas, causes recycling difficult.There are about the losses of 1.5-2% in roasting process for molybdenum concentrate,Wherein about 2/3 trail
A large amount of flue gas discharges.
China it is commonly used be rotary kiln baking technique.Material is under the rotation of kiln body and tilting action when roasting,
From feed end to discharging end motion, molybdenum concentrate successive preheated section and conversion zone completion oxidation roasting overall process in kiln.Rotary kiln
It is divided into internal heat type and two kinds of external heating type again.External heating type rotary kiln production capacity is lower, and kiln body heating position is easy to be burned,
It repairs frequent and costly.The heat-supplying mode of external heating rotary kiln has electric heating, fuel oil heating, heated by gas, coal heating.It is interior
Heating rotary kiln production capacity is higher, and equipment failure rate is low, long service life.Interior heating rotary kiln is fuel used fuel oil, coal gas
And coal, currently, roasting 1t industrial molybdenum oxide consumption coal is up to 275kg standard coal, coal consumption is big, and product yield is low.
In addition, many useful materials exclude rotary kiln with high-temperature flue gas, entrainment material is not recycled effectively in flue gas, is roasted
Manpower is leaned in the discharging of firing product, and it is big that worker's labour is slight, and working environment is unhygienic.
Summary of the invention
In order to more preferably solve to exist in above-mentioned molybdenum oxide roasting technique energy consumption is high, labor intensity of workers is big, working environment not
Hygienic issues, the present invention provide a kind of molybdenum oxide roasting that can be realized energy conservation, effective recovered material, work circumstances safe health
Production line.
In order to achieve the above-mentioned object of the invention, the technical scheme is that a kind of molybdenum oxide baked for producing line, including revolution
Kiln, heating system, feeding system, smoke processing system, it is characterised in that: further include waste heat utilization system, material returns in flue gas
Receipts system, the rotary kiln kiln body successively include flame retardant coating, heat exchange layer and insulating layer from inside to outside, and the heat exchange layer is flame retardant coating
The heat exchanging air duct surrounded between insulating layer, the rotary kiln feed end are equipped with rotary sealing appts, the rotary sealing appts
It is equipped with the fresh air inlet being connected to the heat exchanging air duct, the heat exchanging air duct is connected with the rotary kiln inner cavity；
The waste heat utilization system includes flue gas heat exchange equipment, fresh wind tube, fresh-air fan and heat exchanging air duct, and the flue gas changes
Hot equipment includes discharge flue and fresh air channel makes the fresh air of fresh air channel and the flue gas of discharge flue carry out heat exchange, described
Fresh air channel is connected to by fresh wind tube with heat exchanging air duct, and the fresh-air fan is for driving fresh air in fresh air channel and heat exchanging air duct
Middle flowing；
The smoke processing system includes the flue gas heat exchange equipment, smoke exhaust pipe, deduster one and smoke exhaust fan, the cigarette
The discharge flue of gas heat exchange equipment is connected by smoke exhaust pipe with deduster one, and the smoke exhaust fan is for driving flue gas discharging fume
It flows and is excluded outside deduster one in channel, smoke exhaust pipe and deduster one, the smoke exhaust fan is located at one outlet air of deduster
At mouthful；
Material recovering system includes lock wind blanking device and enclosed conveying device, the lock wind blanking device in the flue gas
It is to export the material in smoke processing system and air is forbidden to enter, the enclosed conveying device closes material at one
It is transported under state, the lock wind blanking device and transport device form a material closed system.
The flue gas heat exchange equipment successively includes heat exchange cinder box, heat exchanger and cooler, the heat exchange cinder box and heat exchanger
Between, between heat exchanger and cooler, between heat exchange cinder box and the fresh air inlet of rotary sealing appts be equipped with the fresh wind tube,
The heat exchange cinder box is located at the rotary kiln charging port, and the heat exchange cinder box, heat exchanger and cooler include discharge flue
And fresh air channel, the smoke exhaust pipe is equipped between the heat exchange cinder box, heat exchanger and cooler and the fresh wind tube is separately connected
The discharge flue of discharge flue and fresh air channel, the heat exchange cinder box is connected with rotary kiln inner cavity and passes through smoke exhaust pipe and heat exchange
Smokejack in device and cooler communicates, and the cooler is equipped with air inlet and is connected to cooler fresh air channel, the cooling
Device fresh air channel is connected to by heat exchanger fresh air channel and fresh wind tube with the fresh air channel of heat exchange cinder box by fresh wind tube, described to change
The fresh air channel of hot cinder box is connected to by fresh air inlet with heat exchanging air duct.
The fresh-air fan is exhaust fan, and the new blower is located on the fresh wind tube.
The lock wind blanking device includes under being separately positioned on heat exchange cinder box, heat exchanger, cooler and deduster one
Expects pipe and the lock wind baiting valve being mounted on feeder pipe, the feeder pipe and the enclosed conveying device closed communication, the envelope
Closing transport device is at least a chain transport machine or screw conveyor.
The side lower of the heat exchange cinder box is provided with the grey feed bin of closing, is equipped with sieve in the grey feed bin of the closing to filter
Hardened ash material, the feeder pipe of the heat exchange cinder box are arranged in the lower part of closing feed bin and are connected with closing feed bin.
It further include cooling discharging system, the cooling discharging system includes discharge end case, air cooling device, broken dress
It sets, the control device of deduster two and control air cooling device, crushing device and deduster movement, the discharge end case is logical
It crosses lock wind blanking device to be connected with air cooling device, the air cooling device is connected with crushing device, described air-cooled
Cooling device and crushing device are connected with deduster two.
Buffer bin and oscillating feeder are successively arranged between the air cooling device and crushing device.
Air cooling device is rotation cooling cylinder, and the lock wind blanking device includes the discharging that discharge end lower box part is arranged in
Manage and be located at discharge nozzle locking wind baiting valve.
The flame retardant coating includes that internal layer shrinks steel plate and pours the bed of material, and insulating layer successively includes heat preservation supporting steel from inside to outside
Plate, insulating layer and rotary kiln shell, the internal layer shrinks the elastic component that steel plate includes multiple steel plates and is located between steel plate, described to change
Heat exchanger fin is provided in hot-flow flue, the heat exchanger fin setting is shunk on steel plate in internal layer.
The rotary sealing appts are located at 1-10 meters of feed end.
The utility model has the advantages that
1. the setting of waste heat utilization system is so that normal temperature air passes through heat exchange equipment in molybdenum oxide baked for producing line of the present invention
400-550 DEG C can be increased to the temperature after heat exchanging air duct, it is no longer necessary to which the roasting of molybdenum oxide can be thus achieved in heating system heat supply
Temperature required for burning, i.e. rotary kiln are not necessarily to heat supply after point furnace for the first time again, realize zero coal consumption energy-saving roasting, reduce and be produced into
This, and rotary kiln kiln body surface temperature after heat exchanging air duct exchanges heat from original 150 DEG C or so is reduced to 70 DEG C or so, so that
Entire production environment temperature reduces, and reduces the excessively high bring security risk of kiln body temperature.
2. the setting of material recovering system carries out material in flue gas closed time in molybdenum oxide baked for producing line of the present invention
It receives and transport, high degree of automation, reduction cost of labor simultaneously reduces labor intensity.
3. in molybdenum oxide baked for producing line of the present invention the setting of cooling discharging system to the obtained molybdenum oxide after roasting into
Cooling, the broken rear civilian dress bag of row is handled, and realizes the automation discharging to molybdenum oxide, and high degree of automation reduces artificial
Cost reduces labor intensity.
4. molybdenum oxide baked for producing line of the present invention realizes a feed inlet, a discharge port, a feedback outlet, production
Environment improves comprehensively, and production process it is hermetically sealed, without leak source, without fugitive dust, the material recovery rate in flue gas can be to 98.8%.
5. rotary kiln kiln body includes insulating layer, heat exchange layer and flame retardant coating in molybdenum oxide baked for producing line of the present invention, so that returning
Rotary kiln kiln structure is stablized, wherein the setting of the elastic element of anti-expansion, so that rotary kiln kiln body service life extends.
6. molybdenum oxide baked for producing line of the present invention can realize Low Grade Molybdenum Concentrates energy-saving roasting, in energy-saving roasting system often
Warm air finally makes the temperature of normal temperature air be increased to 400 DEG C after heat exchange layer heat exchange in flue gas heat exchange equipment and kiln body
More than, the waste heat generated in roasting process is taken full advantage of, and rotary kiln surface temperature is substantially reduced, effectively dropped
Loss low in calories.
7. molybdenum oxide baked for producing line of the present invention substantially increases product yield.Room temperature fresh air passes through in the present invention
It is supplied directly to rotary kiln inner cavity after heat exchange equipment and heat exchanging air duct and carries out molybdenum concentrate oxidation reaction use, so that in molybdenum concentrate reaction
Oxygen it is sufficient, to substantially increase product yield, promote 20% than conventional process techniques level.
Detailed description of the invention
Fig. 1 is the structure flow chart of molybdenum oxide baked for producing line of the present invention；
Fig. 2 is kiln structure schematic diagram of the present invention；
Fig. 3 is the structural schematic diagram one of molybdenum oxide baked for producing line of the present invention；
Fig. 4 is the process flow chart one of molybdenum oxide baked for producing line of the present invention；
Fig. 5 is the kiln body radial structure section view partial enlarged view in one embodiment of the invention；
Fig. 6 is the kiln body axial arrangement partial sectional view in one embodiment of the invention；
Fig. 7 is the schematic diagram two of molybdenum oxide baked for producing line of the present invention；
Fig. 8 is the process flow chart two of molybdenum oxide baked for producing line of the present invention.
In the figure rotary kiln 1, heating system 2, feeding system 3, smoke processing system 4, waste heat utilization system 5, in flue gas
It is material recovering system 6, flame retardant coating 7, heat exchange layer 8, insulating layer 9, heat exchanging air duct 10, rotary sealing appts 11, fresh air inlet 12, new
Air hose 13, fresh-air fan 14, flue gas heat exchange equipment 15, discharge flue 16, fresh air channel 17, smoke exhaust pipe 18, deduster 1, row
Cigarette blower 20, lock wind blanking device 21, enclosed conveying device 22, cooling discharging system 23, discharge end case 24, air cooling device
25, crushing device 26, deduster 2 27, heat exchange cinder box 28, heat exchanger 29, cooler 30, lock wind baiting valve 31, internal layer shrink steel
Plate 32 pours the bed of material 33, heat preservation supporting steel plate 34, adiabator layer 35, rotary kiln shell 36, expansion joint 37, chain transport machine 38, delays
Slug storehouse 39, oscillating feeder 40.
Specific embodiment
With reference to the accompanying drawing, by specific embodiment, the invention will be further described.Following embodiment is descriptive
, it is not restrictive, this does not limit the scope of protection of the present invention.
Referring to Fig. 1, Fig. 2, a kind of molybdenum oxide baked for producing line, including rotary kiln 1, heating system 2, feeding system 3, flue gas
Processing system 4, further includes waste heat utilization system 5, material recovering system 6 in flue gas, and 1 kiln body of rotary kiln is from inside to outside successively
Including flame retardant coating 7, heat exchange layer 8 and insulating layer 9, heat exchanging air duct that the heat exchange layer 8 surrounds between flame retardant coating 7 and insulating layer 9
10, the rotary kiln feed end is equipped with rotary sealing appts 11, and the rotary sealing appts 11 are equipped with and the heat exchanging air duct
The fresh air inlet 12 of connection, the heat exchanging air duct 10 are connected with 1 inner cavity of rotary kiln；The waste heat utilization system 5 includes
Flue gas heat exchange equipment 15, fresh wind tube 13, fresh-air fan 14 and heat exchanging air duct 10, the flue gas heat exchange equipment 15 include discharge flue
16 and fresh air channel 17 make fresh air channel 17 fresh air and discharge flue 16 flue gas carry out heat exchange, the fresh air channel 17
It is connected to by fresh wind tube 13 with heat exchanging air duct 10, the fresh-air fan 14 is for driving fresh air in fresh air channel 17 and heat exchanging air duct
It is flowed in 10；The smoke processing system 4 includes the flue gas heat exchange equipment 15, smoke exhaust pipe 18, deduster 1 and Smoke
The discharge flue 16 of machine 20, the flue gas heat exchange equipment 15 is connected by smoke exhaust pipe 18 with deduster 1, the Smoke
Machine 20 is for driving flue gas to flow in discharge flue 16, smoke exhaust pipe 18 and deduster 1 and excluding outside deduster 1, institute
Smoke exhaust fan 20 is stated to be located at one 19 air outlet of deduster.Material recovering system 6 includes lock wind blanking dress in the flue gas
21 and enclosed conveying device 22 are set, the lock wind blanking device 21 is to export the material in smoke processing system and forbid air
Into the enclosed conveying device 22 transports material under a closed state, the lock wind blanking device 21 and transport
Device 22 forms a material closed system.
Further include cooling discharging system 23, the cooling discharging system 23 include discharge end case 24, air cooling device 25,
The control that crushing device 26, deduster 2 27 and control air cooling device 25, crushing device 26 and deduster 2 27 act
Device, the discharge end case 24 are connected by locking wind blanking device 21 with air cooling device 25, the air cooling device
25 are connected with crushing device 26, and the air cooling device 25 and crushing device 26 are connected with deduster 2 27.
Working principle of the present invention is: normal temperature air is logical by the fresh air in flue gas heat exchange equipment 15 in waste heat utilization system 5
Road 17 absorbs the heat in high-temperature flue gas and becomes to enter revolution by the fresh air inlet 12 of rotary sealing appts 11 after hot-air
The heat exchanging air duct 10 of kiln kiln body further absorbs the fresh sky of high temperature for after the radiant heat of rotary kiln hot-air further being obtained
Gas enters rotary kiln, provides sufficient oxygen to the oxidation reaction of molybdenum concentrate, not only make full use of the waste heat that is generated in production into
Row reaches energy saving purpose from heat supply, and the oxygen in concentrate reaction is sufficient, to substantially increase product yield；In addition
The lock wind blanking device 21 and enclosed conveying device 22 that the material taken out of in high-temperature flue gas passes through in material recovering system 6 make object
Material transports away in the closed state pack for use, and whole process does not have fugitive dust, and material recovery rate is high.Cooling discharging system
Setting so that the product after roasting packs stand-by after supercooling, broken, this automates discharging, save labour,
And the setting of dedusting has purified working environment in cooling and shattering process.
Embodiment 1
Referring to Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of molybdenum oxide baked for producing line, including rotary kiln 1, heating system 2, feeding system
It unites 3, smoke processing system 4, further includes waste heat utilization system 5, material recovering system 6 in flue gas, 1 kiln body of rotary kiln includes
Flame retardant coating 7, heat exchange layer 8 and insulating layer 9, the heat exchanging air duct 10 that the heat exchange layer 8 surrounds between flame retardant coating 7 and insulating layer 9, institute
Rotary kiln feed end is stated equipped with rotary sealing appts 11, the rotary sealing appts 11 are equipped with to be connected to the heat exchanging air duct
Fresh air inlet 12, the heat exchanging air duct 10 are connected with 1 inner cavity of rotary kiln.
The waste heat utilization system 5 include flue gas heat exchange equipment 15, fresh wind tube 13, fresh-air fan 14 and heat exchanging air duct 10,
The flue gas heat exchange equipment 15 includes discharge flue 16 and fresh air channel 17, and the fresh air channel 17 passes through fresh wind tube 13 and heat exchange
Air duct 10 is connected to, and the fresh-air fan 14 is for driving fresh air to flow in fresh air channel 17 and heat exchanging air duct 10；
The smoke processing system 4 includes the ventilation heat exchange equipment 15, smoke exhaust pipe 18, deduster 1 and smoke exhaust fan
20, the discharge flue 16 of the flue gas heat exchange equipment 15 is connected by smoke exhaust pipe 18 with deduster 1, the smoke exhaust fan
20 for driving flue gas to flow in discharge flue 16, smoke exhaust pipe 18 and deduster 1 and excluding outside deduster 1, described
Smoke exhaust fan 20 is located at one 19 air outlet of deduster.
Material recovering system 6 includes locking wind blanking device 21 and enclosed conveying device 22 in the flue gas, under the lock wind
Expect that device 21 is to export the material in smoke processing system and air is forbidden to enter, the enclosed conveying device 22 makes material
It is transported under a closed state, the lock wind blanking device 21 and transport device 22 form a material closed system.
The flue gas heat exchange equipment successively includes heat exchange cinder box 28, heat exchanger 29 and cooler 30, the heat exchange cinder box 28
Between heat exchanger 29, between 29 heat exchangers and cooler 30, heat exchange cinder box 28 and rotary sealing appts 11 fresh air inlet 12
Between be equipped with the fresh wind tube 13, the heat exchange cinder box 28 is located at 1 charging port of rotary kiln, the heat exchange cinder box 28,
Heat exchanger 29 and cooler 30 include discharge flue 16 and fresh air channel 17, the heat exchange cinder box 28, heat exchanger 29 and cooling
The smoke exhaust pipe 18 is equipped between device 30 and the fresh wind tube 13 is separately connected discharge flue 16 and fresh air channel 17, the heat exchange
The discharge flue 16 of cinder box 28 is connected with rotary kiln inner cavity and passes through the row in smoke exhaust pipe 18 and heat exchanger 29 and cooler 30
Flue 16 communicates, and the cooler 30 is equipped with air inlet and is connected to 30 fresh air channel 17 of cooler, 30 fresh air of cooler
Channel 17 is connected by fresh wind tube 13 by the fresh air channel 17 of 29 fresh air channel 17 of heat exchanger and fresh wind tube 13 and heat exchange cinder box 28
Logical, the fresh air channel 17 of the heat exchange cinder box 28 is connected to by fresh air inlet 12 with heat exchanging air duct 10.
The fresh-air fan 14 is exhaust fan, the new blower 14 is located between the heat exchange cinder box 28 and heat exchanger 29,
Any fresh wind tube between 29 heat exchangers and cooler 30, between heat exchange cinder box 28 and the fresh air inlet 12 of rotary sealing appts 11
On 13, new blower 14 is located on the fresh wind tube 13 between the heat exchange cinder box 28 and heat exchanger 29 in the present embodiment.
The lock wind blanking device 21 includes being separately positioned on heat exchange cinder box 28, heat exchanger 29, cooler 30 and deduster
Feeder pipe on one 19 and the lock wind baiting valve 31 being mounted on feeder pipe, the material of the feeder pipe and the enclosed conveying device
Storehouse closed communication, the enclosed conveying device can be one or more transporter, and exchange heat cinder box 28, heat exchanger 29, cooler
30 and deduster 1 on feeder pipe can share a transporter or respectively correspond a transporter, in the present embodiment
The enclosed conveying device is a chain transport machine 38 in heat exchange cinder box 28, heat exchanger 29, cooler 30 and deduster 1
It locks wind blanking device 21 to share, the lock wind baiting valve 31 is twin-stage weight baiting valve.
The flame retardant coating 7 includes that internal layer shrinks steel plate 32 and pours the bed of material 33, insulating layer 9 include heat preservation supporting steel plate 34,
Adiabator layer 35 and rotary kiln shell 36, the internal layer shrink the expansion joint that steel plate 32 includes multiple steel plates and is located between steel plate
37, the heat exchanger fin setting is shunk on steel plate 32 in internal layer.
It include the multiple tube couplings divided by pivot flange inside the kiln body, the air duct of the adjacent tube coupling intersects cloth
It sets.
Embodiment 2
Referring to Fig. 5, Fig. 6, Fig. 7, Fig. 8, embodiment 2 and the meaning that embodiment figure label represents are same as Example 1, with
Unlike embodiment 1:
Further include cooling discharging system 23, the cooling discharging system 23 include discharge end case 24, air cooling device 25,
The control that crushing device 26, deduster 2 27 and control air cooling device 25, crushing device 26 and deduster 2 27 act
Device, the discharge end case 24 are connected by locking wind blanking device 21 with air cooling device 25, the air cooling device
25 are connected with crushing device 26, and the air cooling device 25 and crushing device 26 are connected with deduster 2 27.
Buffer bin 39 and oscillating feeder 40 are successively arranged between the air cooling device 25 and crushing device 26.
Air cooling device 25 is rotation cooling cylinder, and the lock wind blanking device 21 includes being arranged in 24 lower part of discharge end case
Discharge nozzle and be located at discharge nozzle locking wind baiting valve 31, the lock wind baiting valve 31 be twin-stage weight baiting valve.
Claims (8)
1. a kind of molybdenum oxide baked for producing line, including rotary kiln, heating system, feeding system, smoke processing system, feature exist
In: it further include waste heat utilization system, material recovering system in flue gas, the rotary kiln kiln body successively includes fire resisting from inside to outside
Layer, heat exchange layer and insulating layer, the heat exchanging air duct that the heat exchange layer surrounds between flame retardant coating and insulating layer, the rotary kiln charging
End is equipped with rotary sealing appts, and the rotary sealing appts are equipped with the fresh air inlet being connected to the heat exchanging air duct, described to change
Hot-flow flue is connected with the rotary kiln inner cavity, and the rotary sealing appts are located at 1-10 meters of feed end；
The flame retardant coating includes that internal layer shrinks steel plate and pours the bed of material, and insulating layer successively includes multiple heat preservation supporting steels from inside to outside
Plate, adiabator layer and rotary kiln shell, the internal layer shrink the elastic component that steel plate includes multiple steel plates and is located between steel plate, institute
It states and is provided with heat exchanger fin in heat exchanging air duct, the heat exchanger fin setting is shunk on steel plate in internal layer；
The waste heat utilization system includes flue gas heat exchange equipment, fresh wind tube, fresh-air fan and heat exchanging air duct, and the flue gas heat exchange is set
The flue gas progress heat exchange of the standby fresh air and discharge flue for making fresh air channel including discharge flue and fresh air channel, the fresh air
Channel is connected to by fresh wind tube with heat exchanging air duct, and the fresh-air fan is for driving fresh air to flow in fresh air channel and heat exchanging air duct
It is dynamic；
The smoke processing system includes the flue gas heat exchange equipment, smoke exhaust pipe, deduster one and smoke exhaust fan, and the flue gas changes
The discharge flue of hot equipment is connected by smoke exhaust pipe with deduster one, and the smoke exhaust fan is for driving flue gas logical in smoke evacuation
It flows and is excluded outside deduster one in road, smoke exhaust pipe and deduster one, the smoke exhaust fan is located at one air outlet of deduster
Place；
Material recovering system includes lock wind blanking device and enclosed conveying device in the flue gas, and the lock wind blanking device is to make
Material in smoke processing system exports and air is forbidden to enter, and the enclosed conveying device makes material in a closed state
Lower transport, the lock wind blanking device and transport device form a material closed system.
2. molybdenum oxide baked for producing line as described in claim 1, it is characterised in that: the flue gas heat exchange equipment successively includes changing
Hot cinder box, heat exchanger and cooler, the heat exchange cinder box are located at the rotary kiln charging port, the heat exchange cinder box, heat exchanger
Include discharge flue and fresh air channel with cooler, the smoke evacuation is equipped between the heat exchange cinder box, heat exchanger and cooler
Pipe and the fresh wind tube are separately connected discharge flue and fresh air channel, the discharge flue and rotary kiln inner cavity phase of the heat exchange cinder box
It is connected to and passes through smoke exhaust pipe and communicated with the smokejack in heat exchanger and cooler, the cooler is equipped with air inlet and cooler
Fresh air channel connection, the cooler fresh air channel is by fresh wind tube by heat exchanger fresh air channel and fresh wind tube and heat exchange cinder box
Fresh air channel connection, the fresh air channel of the heat exchange cinder box is connected to by fresh air inlet with heat exchanging air duct.
3. molybdenum oxide baked for producing line as claimed in claim 2, it is characterised in that: the fresh-air fan is exhaust fan, described
New blower is located on the fresh wind tube.
4. molybdenum oxide baked for producing line as claimed in claim 2, it is characterised in that: the lock wind blanking device includes setting respectively
The lock wind baiting valve setting the feeder pipe on heat exchange cinder box, heat exchanger, cooler and deduster one and being mounted on feeder pipe, institute
State feeder pipe and the enclosed conveying device closed communication, the enclosed conveying device is at least a chain transport machine or helical feed
Machine.
5. molybdenum oxide baked for producing line as claimed in claim 4, it is characterised in that: the side lower setting of the heat exchange cinder box
There is the grey feed bin of closing, is equipped with sieve in the grey feed bin of the closing to filter hardened ash material, the feeder pipe of the heat exchange cinder box is set
It sets the lower part in closing feed bin and is connected with closing feed bin.
6. molybdenum oxide baked for producing line as described in claim 1, it is characterised in that: it further include cooling discharging system, it is described cold
But discharge system includes discharge end case, air cooling device, crushing device, deduster two and control air cooling device, is crushed
The control device that device and deduster two act, the discharge end case are connected by locking wind blanking device with air cooling device
Logical, the air cooling device is connected with crushing device, the air cooling device and crushing device with deduster two-phase
Connection.
7. molybdenum oxide baked for producing line as claimed in claim 6, it is characterised in that: the air cooling device and crushing device
Between be successively arranged buffer bin and oscillating feeder.
8. molybdenum oxide baked for producing line as claimed in claims 6 or 7, it is characterised in that: air cooling device is rotation cooling
Cylinder, it is described lock wind blanking device include be arranged in discharge end lower box part discharge nozzle and be located at discharge nozzle locking wind baiting valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016107454273 | 2016-08-29 | ||
| CN201610745427 | 2016-08-29 |
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| CN106702140B true CN106702140B (en) | 2019-01-25 |
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| CN113145179A (en) * | 2021-04-23 | 2021-07-23 | 苏州西热节能环保技术有限公司 | Plant regeneration roasting activation device for denitration catalyst and regeneration method thereof |
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| DE10305367A1 (en) * | 2003-02-10 | 2004-08-19 | Polysius Ag | Process and plant for the heat treatment of mineral raw materials |
| CN101008045B (en) * | 2006-01-24 | 2010-10-13 | 洛阳栾川钼业集团冶炼有限责任公司 | Rotary flash distillation direct combustion heat-supply type rotary kiln baking apparatus and process for molybdenum concentrate |
| CN201858864U (en) * | 2010-07-21 | 2011-06-08 | 洛阳栾川钼业集团股份有限公司 | Molybdenum concentrate self-heating roasting device |
| CN204896866U (en) * | 2015-04-07 | 2015-12-23 | 天能水泥有限责任公司 | Dust arrester installation |
| CN206308401U (en) * | 2016-08-29 | 2017-07-07 | 洛阳堆金环保设备有限公司 | A kind of molybdenum oxide baked for producing line |
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