CN104596236B - A kind of improve rotary kiln and produce cement by-product yellow phosphorus or the method for phosphoric acid - Google Patents
A kind of improve rotary kiln and produce cement by-product yellow phosphorus or the method for phosphoric acid Download PDFInfo
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- CN104596236B CN104596236B CN201510037269.1A CN201510037269A CN104596236B CN 104596236 B CN104596236 B CN 104596236B CN 201510037269 A CN201510037269 A CN 201510037269A CN 104596236 B CN104596236 B CN 104596236B
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Abstract
The invention discloses and a kind of improve rotary kiln and produce cement simultaneously by-product yellow phosphorus or the production method of phosphoric acid; this device is to constitute one together with kiln hood air seal set, kiln exhaust gas seal apparatus and kiln head cover housing, kiln hood housing, rotary kiln cylinder by the rotary kiln system of air seal; after utilizing this device phosphorus-containing ore, silica, anthracite to be mixed by manufacture of cement formula; levigate, mixing puts into and wherein produces; by oxygen-free environment in manufacture kiln; stop air to enter in kiln, protect and elemental phosphorous not oxidized realize success by-product yellow phosphorus or phosphoric acid while manufacture of cement.The present invention enables to phosphorus production cost compared with electric furnace process and reduces by more than 80%, and power consumption declines more than about 170 times (having deducted manufacture of cement power consumption).
Description
Technical field
The present invention relates to phosphorous chemical industry and production of construction materials field, improve rotary kiln in particular it relates to a kind of and produce cement
By-product yellow phosphorus or the method for phosphoric acid.
Background technology
Mud grog, with lime stone and clay, ferriferous raw material as primary raw material, is configured to raw material by proper proportion, burns
To the most melted, and semi-finished product that are cooled and that obtain.In cement industry, the most frequently used silicate
Clinker main chemical compositions is calcium oxide, silica and a small amount of aluminum oxide and iron oxide.Essential mineral
Consist of tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetra calcium aluminoferrite.Portland clinker adds appropriate stone
After cream is the most levigate, portland cement.
But there is problem in manufacture of cement now:
1, the product unicity of existing production cement.
The method producing cement is mainly dry-process rotary kiln, current China cement production capacity surplus, if simple the most only from
The production of thing cement, it is clear that do not cater to the demand in market, and development in the future is hidden some dangers for.
2, produce cement and the production circuit of by-product yellow phosphorus or phosphoric acid the most simultaneously.
The whole nation stops production because of cement production capacity surplus at present, if it is possible to other can also be had to produce while producing cement
The output of product, the problem of cement production capacity surplus can have been resolved to a certain extent.And yellow phosphorus or the need of phosphoric acid
Ask market the biggest, if can while producing cement output yellow phosphorus or phosphoric acid, for enterprise because of production capacity
The stopping production problem that surplus causes also is able to be saved oneself, low product near cement plant while retrieving certain loss
Position phosphorus-containing ore resource is fully utilized.
Summary of the invention
The present invention be directed to, it is provided that a kind of improve rotary kiln and produce cement by-product yellow phosphorus or the method for phosphoric acid, this dress
Put and air seal set is set end to end at rotary kiln, and blanking tube air sealing device and gas material seal apparatus, energy are set simultaneously
Being enough one oxygen-free environment of construction in rotary kiln, using this rotary kiln to produce cement by-product yellow phosphorus or phosphoric acid simultaneously can obtain
To realize, cement output and existing output quite (but can obtain while output cement yellow phosphorus or
Phosphoric acid product), solve the product unicity problem of manufacture of cement, and on integrated cost with electric furnace process phase
Ratio, it is possible to make phosphorus production cost reduce by more than 80%, yellow phosphorus product power consumption declines more than about 170 times (buttons
Except manufacture of cement power consumption).
The present invention solves the problems referred to above and be the technical scheme is that
A kind of improvement rotary kiln, including being arranged on kiln head cover housing and the kiln hood housing at two ends, being arranged on kiln hood
Rotary kiln cylinder between over body case and kiln hood housing, the kiln hood being arranged between kiln head cover housing and rotary kiln cylinder
Air seal set, the kiln exhaust gas seal apparatus being arranged between kiln hood housing and rotary kiln cylinder；
Described kiln head cover housing upper connects feeder, feeder and kiln hood air seal set, kiln exhaust gas
Seal apparatus is connected to kiln hood sealing gland chamber and provides malleation oxygenless gas with kiln exhaust gas envelope；The lower end of kiln head cover housing is arranged
There is blanking tube air sealing device, be provided with oxygenless gas inlet port in described blanking tube air sealing device and enter for oxygenless gas
Oxygenless gas positive pressure environment is formed in entering blanking tube air sealing device；
Described kiln hood housing upper is provided with gas outlet, and kiln hood housing is provided with feed pipe, feed pipe
Porch connects self gravitation or external force formation stock column when utilizing material to feed and stops that extraneous air enters
Gas material seal apparatus；
Described kiln hood air seal set can close the gap between kiln head cover housing and rotary kiln cylinder, and kiln exhaust gas seals
Device can close the gap between kiln hood housing and rotary kiln cylinder, kiln hood air seal set, kiln exhaust gas seal apparatus
A rotary kiln system sealed with oxygenless gas is constituted together with kiln head cover housing, kiln hood housing, rotary kiln cylinder.
Described kiln hood air seal set includes seal and sealing gland back-up ring, and described seal is arranged on kiln head cover housing
On, sealing gland back-up ring is fixed on rotary kiln cylinder and can rotate with rotary kiln cylinder, and seal is sliding with sealing gland back-up ring outer rim
Dynamic contact forms the sealing gland chamber in kiln hood air seal set, described kiln hood air seal set and kiln exhaust gas seal apparatus structure one
Sample.
Described seal is sealing gland scale layer or flexible metal hose.
Described oxygenless gas is water vapour, CO2Or inert gas.
The described gas material seal apparatus utilizing external force formation stock column include the feeding cylinder that is connected with feed pipe and
The dispenser that feeding cylinder is connected, is provided with the putty head that spring is connected, putty with spring in described feeding cylinder
The channel outlet of head and dispenser contacts, and is provided with screw feeder in dispenser, and screw feeder pushes away forward
Animal material formation stock column completes material sealing gland, when material column pressure is more than spring pressure, and material stream the most automatically
Go out to enter feed pipe.
Utilizing the gas material seal apparatus of gravity formation stock column actual is exactly the envelope between tremie pipe and feed pipe
Closing in container, profit weighs principle in the balance, and one end that balance claims is as the material block head in tremie pipe exit, instantly
During the other end weights weight that in material pipe, weight of material claims more than balance, material is from tremie pipe outlet and material block head
Contact position automatically exit into feed pipe.
Described feeder is air exhauster or compressor.
The cement produced with aforesaid device by-product yellow phosphorus or the method for phosphoric acid simultaneously, by phosphorus-containing ore, silica,
The uniform feeding of anthracite enters calcining in levigate rear feeding rotary kiln in grinding machine, and the most by weight, phosphorus-containing ore is
50-68 part, silica 3-20 part, anthracite 1-10 part, be passed through no oxygen to blanking tube air sealing device during calcining
Body, then oxygenless gas is transported in the sealing gland chamber of kiln hood air seal set and kiln exhaust gas seal apparatus with feeder
Form the oxygenless gas more than atmospheric pressure in sealing gland chamber and stop air to build oxygen-free environment in entering rotary kiln, make
The elemental phosphorous P must being evaporated from high-heat hot material pellet with high-heat hot material4Not oxidized the obtaining of gas mixes kiln
Gas, mixing kiln gas enters after dry method dust phosphorus production system obtain yellow phosphorus or entrance phosphoric acid production system i.e. obtain phosphorus
Acid, i.e. obtains clinker after the pellet cooling in rotary kiln cylinder.
Being embodied as of oxygen-free environment is built: oxygenless gas going out from blanking tube air sealing device with malleation oxygenless gas
At Kou, outside micro-jet stops air to enter；And with feeder, oxygenless gas is delivered to the gas of kiln hood air seal set
The oxygenless gas more than atmospheric pressure is formed, more than atmospheric pressure with in the sealing gland chamber of kiln exhaust gas seal apparatus in envelope chamber
Oxygenless gas between sealing gland scale and sealing gland scale is outside with rotary kiln cylinder sealing gland back-up ring outer rim contact position
Micro-jet, stops air to enter in kiln, and the environment entered for no oxygen in making whole kiln protects elemental phosphorous P4
Gas is not oxidized.
Present inventive concept is, assembly of the invention forms an anaerobic in rotary kiln air seal makes kiln cleverly
Environment it is thus possible to stop elemental phosphorous gas oxidized while cement producing and be obtained in that yellow phosphorus, in a word
The present invention utilizes said apparatus to use the same phosphorus-containing ore containing calcium constituent, and is furnished with silica, anthracite etc.,
Can be same under conditions of creating oxygen-free environment while obtaining primary product tricalcium silicate (clinker)
Time prepare yellow phosphorus or phosphoric acid (especially yellow phosphorus), this is that prior art can not realize, and has prominent
Feature and significantly progress.
To sum up, the invention has the beneficial effects as follows:
One, present invention saves high-grade phosphorus-containing ore resource, each cement plant is available local low-grade phosphorous
Ore-burden produces cement by-product yellow phosphorus or phosphoric acid product.
Two, the present invention produces cement and the cement of prior art production are suitable.
Three, (power consumption of one ton of yellow phosphorus is only grinding pow consumption 30 degree electricity and phosphorus processed electricity to present invention saves energy consumption
Consume about 30 degree of electricity with 1-10% anthracite reducing agent), reduce yellow phosphorus or phosphoric acid production cost, high
Cost yellow phosphorus or phosphoric acid product become the byproduct of manufacture of cement, and cost is extremely low, and (its cost is the most low-grade
The price difference of phosphorus-containing ore and lime stone and grinding and phosphorus production cost processed).
Four, present invention employs the low cost with high-temperature hot pellet slag kiln hood in sprayed water internal to tremie pipe to pacify again
Full advanced technology, makes water absorb the heat energy in high-temperature hot pellet slag, becomes while steam also profit pellet
Remaining charcoal in slag and the kiln discharge temperature reducing high temperature pellet slag serve again and prevent the air outside kiln to enter kiln
Interior effect, has saved the energy, with low cost, safe and reliable.
Five, the hot raw material expecting that pellet produces cement exactly after cooling down that the present invention produces: clinker.No
Waste sludge discharge, free from environmental pollution.
Six, present invention employs dry method dust, wash dedusting advanced technology, the yellow phosphorus product quality of production with
Electric furnace process yellow phosphorus quality is suitable, and phosphoric acid product quality is suitable with thermal phosphoric acid quality, and cost is significantly less than electric furnace process
Yellow phosphorus and phosphorous acid production by BEP cost, production cost reduces by more than 80%, produces power consumption and reduces by more than 170 times.
Accompanying drawing explanation
Fig. 1 is the structure chart improving rotary kiln；
Reference is:
1, kiln head cover housing, 2, kiln hood housing, 21, feed pipe, 22, gas outlet, 3, rotary kiln cylinder, 4,
Kiln hood air seal set, 5, kiln exhaust gas seal apparatus, 6, feeder, 7, blanking tube air sealing device, 8, seal
Body, 9, sealing gland back-up ring, 10, sealing gland chamber, 11, feeding cylinder, 12, material block head, 13, dispenser, 14,
Screw feeder, 15, spring, 01, oxygenless gas inlet port.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of present invention work, but the enforcement of the present invention
Mode is not limited to this.
Embodiment 1:
A kind of improvement rotary kiln, including being arranged on kiln head cover housing 1 and the kiln hood housing 2 at two ends, being arranged on
Rotary kiln cylinder 3 between kiln head cover housing 1 and kiln hood housing 2, it is arranged on kiln head cover housing 1 and rotary kiln cylinder
Kiln hood air seal set 4 between body 3, the kiln exhaust gas being arranged between kiln hood housing 2 and rotary kiln cylinder 3 envelope
Device 5；
Described kiln head cover housing 1 top connects a feeder 6, feeder 6 and kiln hood air seal set 4,
Kiln exhaust gas seal apparatus 5 is connected to kiln hood sealing gland chamber 10 and provides malleation oxygenless gas with kiln exhaust gas envelope；Kiln hood case
The lower end of body 1 is provided with blanking tube air sealing device 7, is provided with oxygenless gas in described blanking tube air sealing device 7
Inlet port 01 forms oxygenless gas positive pressure environment in entering blanking tube air sealing device 7 for oxygenless gas；
Described kiln hood housing 2 top is provided with gas outlet 22, and kiln hood housing 2 is provided with feed pipe 21,
Feed pipe 21 porch connects self gravitation or external force formation stock column when utilizing material to feed and stops outside
The gas material seal apparatus that air enters；
Described kiln hood housing 2 top is provided with gas outlet 22, and kiln hood housing 2 is provided with feed pipe 21,
Feed pipe 21 porch connects self gravitation or external force formation stock column when utilizing material to feed and stops outside
The gas material seal apparatus that air enters；
Described kiln hood air seal set 4 can close the gap between kiln head cover housing 1 and rotary kiln cylinder 3, kiln
Stern seal device 5 can close the gap between kiln hood housing 2 and rotary kiln cylinder 3, kiln hood air seal set 4,
Kiln exhaust gas seal apparatus 5 constitutes one by nothing together with kiln head cover housing 1, kiln hood housing 2, rotary kiln cylinder 3
The rotary kiln system that carrier of oxygen seals.
Embodiment 2:
Similar with embodiment 1, difference is: kiln hood air seal set 4 includes seal 8 and sealing gland back-up ring 9,
Described seal 8 is arranged on kiln head cover housing 1, and sealing gland back-up ring 9 is fixed on rotary kiln cylinder 3 can be with rotation
Kiln cylinder body 3 rotates, and seal 8 forms the gas in kiln hood air seal set 4 with sealing gland back-up ring 9 outer rim sliding contact
Envelope chamber 10, described kiln hood air seal set 4 is the same with kiln exhaust gas seal apparatus 5 structure, i.e. kiln exhaust gas seal apparatus 5
Also including seal 8 and sealing gland back-up ring 9, seal 8 is arranged on kiln hood housing 2, and sealing gland back-up ring 9 is solid
It is scheduled on rotary kiln cylinder 3 and can rotate with rotary kiln cylinder 3, seal 8 and sealing gland back-up ring 9 outer rim sliding contact
Form the sealing gland chamber 10 in kiln exhaust gas seal apparatus 5.
Seal 8 is sealing gland scale layer or flexible metal hose.Sealing gland scale layer or flexible metal hose
It is arranged on kiln head cover housing 1 or kiln hood housing 2 and can adapt to rotary kiln cylinder 3 expanded by heating or cooling receipts
The deflection of contracting, the most no matter rotary kiln cylinder 3 is because of the change expansion or shrinkage of external temperature condition, sealing gland scale layer
Or flexible metal hose all by rotary kiln cylinder 3 firmly lock ring, and can coordinate sealing gland back-up ring 9 to form sealing gland chamber
10。
Oxygenless gas is water vapour, CO2Or inert gas.No oxygen physical efficiency is introduced directly into from outside, also can
Enough timely outputs supply whole production system.
The described gas material seal apparatus utilizing external force formation stock column includes the feeding cylinder being connected with feed pipe 21
11 dispensers 13 being connected with feeding cylinder 11, are provided with spring 15 and spring in described feeding cylinder 11
The 15 putty heads being connected, the channel outlet of putty head and dispenser 13 contacts, and is provided with in dispenser 13
Screw feeder 14, screw feeder 14 promotes forward material to form material post and completes material sealing gland, works as material
When column pressure is more than spring 15 pressure, material i.e. enters feed pipe 21.
The described gas material seal apparatus utilizing gravity formation stock column is actual be exactly tremie pipe and feed pipe 21 it
Between closing container in, profit weighs principle in the balance, one end of title as tremie pipe exit material seal material block head
12, when the other end weights weight that weight of material in tremie pipe claims more than balance, material from tremie pipe outlet with
The contact position of material envelope material block head 12 exits into feed pipe 21 automatically.
Described feeder 6 is air exhauster or compressor.
Embodiment 3:
P in phosphorus-containing ore205Si0 in content 6-31%, calcium oxide content 36-48%, silica2Content 75
-99%, anthracite, C content 75-82%.
Cement by-product yellow phosphorus or the method for phosphoric acid simultaneously produced with aforesaid device, by weight, by 60 parts
Uniform feeding after cement production process recipe requirements dispensing mixes pressed by phosphorus-containing ore, 3 parts of silicas, 10 parts of anthracites
Enter calcining in levigate rear feeding rotary kiln in grinding machine, during calcining, be passed through carbon dioxide gas to blanking tube air sealing device 7
Body, then in carbon dioxide being transported to the sealing gland chamber 10 of kiln hood air seal set 4 with feeder 6 and kiln
Form the carbon dioxide more than atmospheric pressure in the sealing gland chamber 10 of stern seal device 5 and stop air to enter
Oxygen-free environment is built so that the elemental phosphorous P being evaporated from high-heat hot material pellet with high-heat hot material in rotary kiln4
Gas is not oxidized obtains mixing kiln gas, mixing kiln gas enter after dry method dust phosphorus production system obtain yellow phosphorus or
Enter phosphoric acid production system and i.e. obtain phosphoric acid, after the pellet cooling in rotary kiln cylinder 3, i.e. obtain clinker.
Integrated cost is compared with electric furnace process, it is possible to make phosphorus production cost reduce by more than 80%.With electric furnace process
Compare yellow phosphorus product power consumption and decline more than about 170 times (having deducted manufacture of cement power consumption).
Embodiment 4
Similar with embodiment 3, difference is:
Cement by-product yellow phosphorus or the method for phosphoric acid simultaneously produced with aforesaid device, by weight, 50 parts contain
Rock phosphate in powder, 15 parts of silicas, 1 part of anthracite are entered by feeding uniform after the mixing of cement production process recipe requirements dispensing
In grinding machine, calcining in levigate rear feeding rotary kiln, is passed through inert gas to blanking tube air sealing device 7 during calcining, then uses
Inert gas is transported in the sealing gland chamber 10 of kiln hood air seal set 4 and kiln exhaust gas seal apparatus 5 by feeder 6
Sealing gland chamber 10 in form the inert gas more than atmospheric pressure and stop air to build anaerobic ring in entering rotary kiln
Border so that the elemental phosphorous P being evaporated from high-heat hot material pellet with high-heat hot material4Gas is not oxidized to be obtained
Mixing kiln gas, mixing kiln gas enters phosphorus production system after dry method dust and obtains yellow phosphorus or enter phosphoric acid production system
Obtain phosphoric acid, after the pellet cooling in rotary kiln cylinder 3, i.e. obtain clinker.
Integrated cost is compared with electric furnace process, it is possible to make phosphorus production cost reduce by more than 80%.With electric furnace process
Compare yellow phosphorus product power consumption and decline more than about 170 times (having deducted manufacture of cement power consumption).
Embodiment 5
Similar with embodiment 3, difference is:
Cement by-product yellow phosphorus or the method for phosphoric acid simultaneously produced with aforesaid device, by weight, 68 parts contain
Uniform feeding after cement production process recipe requirements dispensing mixes pressed by phosphorus-containing ore, 20 parts of silicas, 6 parts of anthracites
Enter calcining in levigate rear feeding rotary kiln in grinding machine, calcining production process monitors in blanking tube air sealing device 7
When heat material pellet temperature reaches more than 300 DEG C, the heat material pellet water spray in blanking tube air sealing device 7 central tube,
Allow water heat absorption material pellet temperature produce positive pressure water steam to the exit of blanking tube air sealing device 7 outside micro-jet,
Air is stoped to enter from blanking tube air sealing device 7 in kiln, the most also the heat material pellet in kiln head cover housing 1
Water spray, produces positive pressure water steam and forms oxygen-free environment in kiln head cover housing 1 by water vapour, use air exhauster simultaneously
Extract the anaerobic water steam in kiln head cover housing 1 out, deliver in the sealing gland chamber 10 of kiln hood air seal set 4 with kiln tail
Forming the positive pressure water steam more than atmospheric pressure in sealing gland chamber 10 in air seal set 5, positive pressure water steam is from gas
Between envelope scale layer, the outside micro-jet in sealing gland back-up ring 9 outer rim contact position with sealing gland scale layer with rotary kiln cylinder 3 hinders
In only air enters kiln.Water vapour in kiln head cover housing 1 is travelled forward by kiln tail vacuum suction further simultaneously
Absorb heat material pellet heat, in steam temperature reaches when water-gas generates temperature and heat material pellet is expected with heat
In remaining carbon feedstock superfluous anthracite reducing agent generate water-gas together with reduction carbonic oxide with in kiln superfluous oxygen
Combustion reaction, all oxygen in exhausting kiln, become oxygen-free environment protection simple substance P in making kiln4Gas is not oxidized,
The simple substance P when temperature reaches 1230-1330 DEG C4Gas is evaporated and an oxygen from heat material pellet with high-heat hot material
Changing charcoal, water-gas, carbon dioxide packing gas and miscellaneous dirt and form mixing kiln gas, mixing kiln gas is through nonaqueous dust cleaner dedusting
The rear phosphorus system processed entering production yellow phosphorus, i.e. can get high-quality yellow phosphorus product；If after nonaqueous dust cleaner dedusting
Mixing kiln gas enter produce phosphoric acid sample oxidizer be hydrated phosphoric acid system processed then can get high-quality phosphoric acid
Product, the hot raw material expecting that pellet produces cement exactly after cooling down: clinker.
Wherein, use water vapour method to produce than additive method and save production cost and improve production efficiency, and
And it is the low cost of this mode, safe and reliable.Water vapour is possible with bled steam or the boiler offer in the external world certainly
Steam but energy consumption can be increased.
At integrated cost compared with electric furnace process, it is possible to make phosphorus production cost reduce by more than 80%.With electric furnace
Method is compared yellow phosphorus product power consumption and is declined more than about 170 times (having deducted manufacture of cement power consumption).
Claims (6)
1. an improvement rotary kiln, it is characterized in that, including being arranged on the kiln head cover housing (1) at two ends and kiln hood housing (2), the rotary kiln cylinder (3) being arranged between kiln head cover housing (1) and kiln hood housing (2), the kiln hood air seal set (4) being arranged between kiln head cover housing (1) and rotary kiln cylinder (3), the kiln exhaust gas seal apparatus (5) that is arranged between kiln hood housing (2) and rotary kiln cylinder (3)；
Described kiln head cover housing (1) top connects feeder (6), and the sealing gland chamber (10) in sealing gland chamber (10) and kiln tail that feeder (6) and kiln hood air seal set (4), kiln exhaust gas seal apparatus (5) are all connected to kiln hood provides malleation oxygenless gas；The lower end of kiln head cover housing (1) is provided with blanking tube air sealing device (7), is provided with in oxygenless gas inlet port (01) enters blanking tube air sealing device (7) for oxygenless gas and forms oxygenless gas positive pressure environment in described blanking tube air sealing device (7)；
nullDescribed kiln hood housing (2) top is provided with gas outlet (22)，Feed pipe (21) it is provided with on kiln hood housing (2)，Feed pipe (21) porch connects the gas material seal apparatus utilizing external force formation stock column to stop extraneous air entrance，The described gas material seal apparatus utilizing external force formation stock column includes the feeding cylinder (11) being connected with feed pipe (21)、The dispenser (13) being connected with feeding cylinder (11)，Spring (15) it is provided with in described feeding cylinder (11)、The putty head being connected with spring (15)，The channel outlet of putty head and dispenser (13) contacts，Screw feeder (14) it is provided with in dispenser (13)，Screw feeder (14) promotes forward material to form material post and completes material sealing gland，When material column pressure is more than spring (15) pressure，Material i.e. enters feed pipe (21)；
Described kiln hood air seal set (4) can close the gap between kiln head cover housing (1) and rotary kiln cylinder (3), kiln exhaust gas seal apparatus (5) can close the gap between kiln hood housing (2) and rotary kiln cylinder (3), and kiln hood air seal set (4), kiln exhaust gas seal apparatus (5) constitute a rotary kiln system sealed with oxygenless gas together with kiln head cover housing (1), kiln hood housing (2), rotary kiln cylinder (3).
Rotary kiln the most according to claim 1, it is characterized in that, described kiln hood air seal set (4) includes seal (8) and sealing gland back-up ring (9), described seal (8) is arranged on kiln head cover housing (1), sealing gland back-up ring (9) is fixed on rotary kiln cylinder (3) and can rotate with rotary kiln cylinder (3), seal (8) forms the sealing gland chamber (10) in kiln hood air seal set (4) with sealing gland back-up ring (9) outer rim sliding contact, and described kiln hood air seal set (4) is the same with kiln exhaust gas seal apparatus (5) structure.
Rotary kiln the most according to claim 2, it is characterised in that described seal (8) is sealing gland scale layer or flexible metal hose.
4. according to the rotary kiln described in any one of claim 1-3, it is characterised in that described oxygenless gas is water vapour, CO2 or inert gas.
Rotary kiln the most according to claim 1, it is characterised in that described feeder (6) is air exhauster or compressor.
6. produce cement by-product yellow phosphorus or the method for phosphoric acid simultaneously with the rotary kiln described in any one of claim 1-5, it is characterized in that, by phosphorus-containing ore, silica, the uniform feeding of anthracite enters calcining in levigate rear feeding rotary kiln in grinding machine, the most by weight, phosphorus-containing ore is 50-68 part, silica 3-20 part, anthracite 1-10 part, it is passed through oxygenless gas to blanking tube air sealing device (7) during calcining, formed in oxygenless gas being transported to the sealing gland chamber (10) of kiln hood air seal set (4) with feeder (6) again and in the sealing gland chamber (10) of kiln exhaust gas seal apparatus (5) and be more than the oxygenless gas of atmospheric pressure and stop air to enter the interior oxygen-free environment of building of rotary kiln, make the elemental phosphorous P being evaporated from high-heat hot material pellet with high-heat hot material4Gas is not oxidized obtains mixing kiln gas, and mixing kiln gas enters phosphorus production system after dry method dust and obtains yellow phosphorus or enter phosphoric acid production system and i.e. obtain phosphoric acid, and the pellet in rotary kiln cylinder (3) i.e. obtains clinker after cooling down.
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| CN201510037269.1A CN104596236B (en) | 2015-01-26 | 2015-01-26 | A kind of improve rotary kiln and produce cement by-product yellow phosphorus or the method for phosphoric acid |
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| CN107055498B (en) * | 2017-04-28 | 2023-07-18 | 北京航天迈未科技有限公司 | Device and method for simultaneously producing yellow phosphorus and phosphoric acid |
| CN112429707B (en) * | 2020-11-27 | 2022-07-15 | 四川阳华环保科技有限公司 | Method and device for producing yellow phosphorus and phosphoric acid by replacing in kiln method preheating material sealing rotary cylinder |
| CN114438272B (en) * | 2022-01-20 | 2023-05-05 | 酒泉钢铁(集团)有限责任公司 | Oxygen isolation method for cooling high-temperature direct reduction material of iron ore rotary kiln |
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| CN201014917Y (en) * | 2007-02-27 | 2008-01-30 | 泰州恒翔无线电专用设备有限公司 | Full airproof atmosphere protection high temperature continuous calcination rotary kiln |
| CN201259367Y (en) * | 2008-07-04 | 2009-06-17 | 杭州赛诺索欧电池有限公司 | Completely atmosphere controlled fully closed continuous revolving furnace |
| US8500444B2 (en) * | 2009-09-14 | 2013-08-06 | Takasago Industry Co., Ltd. | Rotary kiln and battery material manufactured by the rotary kiln |
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