CN107782144A - One kind injection assisted sintering method blowing device - Google Patents
One kind injection assisted sintering method blowing device Download PDFInfo
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- CN107782144A CN107782144A CN201610754018.XA CN201610754018A CN107782144A CN 107782144 A CN107782144 A CN 107782144A CN 201610754018 A CN201610754018 A CN 201610754018A CN 107782144 A CN107782144 A CN 107782144A
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- blow
- injection
- blowing device
- inwall
- inner chamber
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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
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of intracavity blowing device (1), including blow (2), the injection tube (3) being connected with blow (2), injection plenum chamber (201) is provided with blow (2), injection branch pipe (302) internally communicates with injection plenum chamber (201), and blow (2) inwall is provided with injection hole (202).The present invention changes injection structure form, the flow channel of combustion gas is changed into blow inwall cavity from injection tube, combustion gas ejiction opening is changed into blow inwall perforate from injection hole, mixed fully with air in cover with the combustion gas being ejected into after inwall perforate in cover by blow inwall cavity, and eliminate pipe row's structure type of prior art, can effectively solve every defect of prior art, strengthen the mixture homogeneity of combustion gas and air in blow, extend the service life of blowing device.The prior art that compares is relatively reliable, safety and stablization, there is great potential.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, and in particular to one kind injection assisted sintering method blowing device.
Background technology
Sintering process is to smelt iron a key link in flow, and its principle is that various powdery iron-containing raw materials, supplying is suitable
The fuel and flux of amount, appropriate water is added, makes material that a series of physical occur after blended and pelletizing on agglomerating plant
Change is learned, sintering is blocking, and the next step is carried out so as to be sent to blast furnace.
In order to reduce the coke ratio of blast furnace ironmaking and smelting cost, requirement of the blast furnace to sintering deposit is often that high intensity and height are gone back
Originality.In sintering circuit, typically require that sintering deposit has higher intensity, high finished product rate, the relatively low rate of return mine, and it is relatively low
Fuel consumption.The sintering deposit of high intensity and high reproducibility consumes less coke in blast furnace ironmaking process, so as to reduce dioxy
Change the discharge of carbon.In the long run consider, carbon dioxide discharge-reduction requirement is by as one of bottleneck for restricting development of iron ＆ steel industry.According to
Related data introduction, sintering account for the 60% of industrial discharge total amount with blast furnace process CO2 emissions.Therefore, no matter from enterprise
Industry reduces cost consideration and still considered from environmental protection angle, reduces sintering solid fuel this consumption ratio with reducing blast furnace burden
Fuel ratio turns into the urgent need of ironmaking technology.
Japanese JFE companies develop " sintering charge level gaseous fuel injection technology ", and its principle is being burnt by blowing device
Injection is diluted to the gaseous fuel below combustible concentration lower limit above knot chassis, makes its combustion heat supplying in sinter bed.The skill
Art can reduce solid carbon dosage and CO in sintering deposit production2Discharge capacity, simultaneously as the burning of gaseous fuel broadens burning
High temperature bandwidth of the ramming material layer in production, so that 1200~1400 DEG C of sintering deposit temperature-time is extended, so as to
So that the intensity and 5~10mm porositys of sintering deposit are effectively strengthened.
But what the blowing device of prior art was taken is pipe row's form, following defect in production be present：
1st, combustion gas hardly possible is blown uniformly to mix with air in cover：Managed row's structure type is limited, and combustion gas blow-off point is all relatively more inclined
Low, spraying combustion gas will soon contact with sintering feed, and such combustion gas does not just have time enough to be well mixed with air in cover, nothing
Method forms the mixed gases of moderate concentration, and negative effect is caused to the production effect for being blown assisted sintering method.
2nd, pipe row service life is short：It is made up of, and is blown the injection tube that some root long degree are long, diameter is thin due to pipe row
Situation sagging in the middle part of pipe is occurred by its own deflection in pipe during long-term production, so as to cause security incident,
Influence injection production.
Two defects for more than, we are subject to Optimal improvements on existing blowing device architecture basics, try hard to develop
A kind of service life is long, injection combustion gas can have sufficient time and the mixed uniformly blowing device of air in cover, makes in the hope of reaching
Whole production line stable yields, the purpose of natural labor.
The content of the invention
The present invention provides a kind of new intracavity blowing device, and the device is interior including having above pallet
The blow of chamber, gas supply pipeline, the injection branch pipe connected with the inner chamber of blow, and the injection connected with injection branch pipe
House steward；Wherein cross section of the inner chamber of blow on the longitudinal direction of blowing device (i.e. trolley movement direction) be rendered as doorframe shape or
It is inverted U-shaped, the top inner wall and side interior wall of blow be designed with it is multiple (such as have 100-5000 respectively, such as 150-4000, preferably
200-3000, preferably 250-2000, such as 400 or 600 or 800) injection hole that is connected with inner chamber.
It is preferred that one or more inner chambers are distributed in blow on the longitudinal direction of blowing device (i.e. trolley movement direction).
It is preferred that the quantity of inner chamber is 1-10, it is preferable that 2-8, more preferably 3-6, more preferably 4-5.Correspondingly, connected with each inner chamber
The quantity of injection branch pipe be 1-10, it is preferable that 2-8, more preferably 3-6, more preferably 4-5.Typically, it is blown the quantity of branch pipe
, can also be unequal equal to the quantity of inner chamber.
It is preferred that with equidistantly or not equidistantly distributed on longitudinal direction (i.e. trolley movement direction) of the injection hole along blowing device
In the top of blow inwall and side wall.
It is preferred that in the cross section in the longitudinal direction of blowing device (i.e. trolley movement direction) horizontally and vertically, spray
Aperture blowing is not to be equally distributed in equidistantly or top and the side wall of blow inwall.
Typically, the lower edge of side interior wall injection hole 202 highly should be higher than that bed depth (both vertical height of pallet 5
It is 10-50cm to spend difference, such as 30 or 40cm).
The device also includes being arranged on blow sidepiece, the side seals with sintering pallet junction.
It is preferred that the thickness of injection cavity chamber cavity is 2-90mm, preferably 5-70mm, more preferably 7-50mm, preferably 9-
30cm, such as 10 or 20cm.
Typically, circle is presented in the cross section for the injection hole being distributed on the top and side wall of blow inwall, oval, and three
It is angular, rectangle, pentagon, or hexagon.It is preferred that the average diameter of injection hole is 1-30mm, preferably 1.2-20mm, more preferably
1.5-15mm more preferably 2-6mm.
It is preferred that the device also includes injection control system 6, injection control system 6 includes flow-through orifice 601, control module
602 and be arranged at injection branch pipe 302 on burnt gas valve 603, wherein flow-through orifice 601 located at injection branch pipe 302 on, control mould
Block 602 is connected with flow-through orifice 601 and burnt gas valve 603 respectively, and control module 602 receives the detection data of flow-through orifice 601,
It is compared with the predetermined target value in module, so as to control the aperture of burnt gas valve 603, change combustion gas real-time traffic with
Meet blowing process requirement.
It is preferred that being additionally provided with multiple cowling panels arranged in parallel in blow, cowling panel is vertically arranged；It is preferred that cowling panel
Distance of the bottom at the top of the bed of material is 50-200cm, such as 100cm.It is preferred that the spacing of adjacent cowling panel arranged in parallel is
10-50cm, such as 20,30 or 40cm.It is preferred that the thickness of cowling panel is 6-50mm, more preferably 10-40mm, such as 30mm.
The present invention also provides a kind of sintering equipment, and it includes above-described intracavity blowing device, seal, sintering platform
The bottom of blow and pallet are tightly connected by car, the seal.
In the application, the longitudinal direction (i.e. trolley movement direction) of blowing device is equal to longitudinal direction (the i.e. trolley movement of blow
Direction).
Wherein along the traffic direction of chassis, the length of blow is 10-40 rice, preferably 12-35 rice, preferably 15-30 rice.
In the length, when setting multiple disconnected inner chambers each other in blow, the quantity of inner chamber is 2-15, it is preferable that 2-
12, more preferably 3-10, more preferably 4-8.
The main improvement of the present invention：
Injection plenum chamber is set up in blow：Present invention eliminates injection tube of the prior art, increase in blow
If injection plenum chamber, it is to substitute injection tube to form a gas flow channel that it, which is acted on, so that combustion gas can flow simultaneously wherein
Spray, be blown the length of plenum chamber, width with highly can be different and different according to on-site actual situations.Such as it is blown cavity Interior Space
The thickness of chamber can be 1-50cm, preferably 5-30cm, such as 10 or 20cm.
Meanwhile the present invention is provided with injection hole in the inwall of blow, it is to substitute the spray in prior art injection tube that it, which is acted on,
Aperture blowing, combustion gas are sprayed into by injection hole and subsequent production are carried out in cover.The pore size of injection hole, arrangement density can be according to live feelings
Condition is different and different, if the diameter of injection hole can be 1-10cm, preferably 1.5-7cm, more preferably 2-5cm.Injection hole can be each other
It is equally spaced, or the distribution in upper tightly lower sparse.Quantity at the top of blow inwall with side wall injection hole can be with identical or different.It is excellent
The quantity of choosing top injection hole is more than side wall.
When being produced using this real invention intracavity blowing device, combustion gas first passes through injection house steward and enters injection branch pipe,
Subsequently enter in injection plenum chamber, combustion gas can hoard here to build the pressure, and enters finally by with the injection hole on injection plenum chamber
In blow, it is sufficiently mixed with air in cover, enters sinter bed auxiliary production after forming mixed gases.
This technology compared with prior art, there is some following advantage：
1st, injection combustion gas easily uniformly mixes with air in cover：The present invention changes injection structure form, by combustion gas from injection
Cover inwall sprays, and compensate for prior art and is connect quickly with sintering feed because spraying combustion gas caused by combustion gas blow-off point position is relatively low
Touch, enter the defects of being well mixed without time enough with air in cover.Combustion gas has fully due to being sprayed from blow inwall
Time mixed with air in cover, to auxiliary production have certain help.
2nd, service life is grown：Present invention eliminates the pipe of prior art to arrange structure type, therefore in the absence of bending deflection of pipe not
Pipeline caused by enough the problem of middle part is sagging after long-term production.Injection plenum chamber be located inside blow, Stability Analysis of Structures and by force
Degree is higher, the problem of after long-term production being also not in the lost of life.
In summary, by using the intracavity blowing device of the present invention, can effectively solve every defect of prior art,
Strengthen the mixture homogeneity of combustion gas and air in blow, extend the service life of blowing device.Prior art compare more
Reliably, safety and stablization, there is great potential.
Brief description of the drawings
Fig. 1 is intracavity blowing device schematic diagram of the present invention；
Fig. 2 is intracavity blowing device partial schematic diagram of the present invention；
Reference：1- intracavity blowing devices；2- blows；201- is blown plenum chamber；202- injection holes；3- combustion gas is defeated
Send pipeline；301- is blown house steward；302- is blown branch pipe；4- seals；5- pallets；6- injection control systems；601- is detected
Probe；602 control modules；603- gas valves；7- cowling panels.
Embodiment
The present invention provides a kind of intracavity blowing device 1, and the device includes having inner chamber positioned at the top of pallet 5
201 blow 2, gas supply pipeline 3, the injection branch pipe 302 connected with the inner chamber 201 of blow 2, and with being blown branch pipe
The injection house steward 301 of 302 connections；Wherein the inner chamber 201 of blow 2 is on the longitudinal direction of blowing device 1 (i.e. trolley movement direction)
Cross section be rendered as doorframe shape or inverted U-shaped, the top inner wall and side interior wall of blow 2 are designed with multiple (such as respectively having
100-5000, such as 150-4000, preferably 200-3000, preferably 250-2000, such as 400 or 600 or 800) connect with inner chamber 201
Logical injection hole 202.
It is preferred that one or more inner chambers are distributed in blow 2 on the longitudinal direction of blowing device 1 (i.e. trolley movement direction)
201.It is preferred that the quantity of inner chamber 201 is 1-10, it is preferable that 2-8, more preferably 3-6, more preferably 4-5.Correspondingly, with it is each interior
The quantity of the injection branch pipe 302 of chamber connection is 1-10, it is preferable that 2-8, more preferably 3-6, more preferably 4-5.Typically, it is blown
The quantity of branch pipe 302 is equal to the quantity of inner chamber 201, can also be unequal.
It is preferred that with equidistant or not equidistant on longitudinal direction (i.e. trolley movement direction) of the injection hole 202 along blowing device 1
It is distributed in top and the side wall of the inwall of blow 2.
It is preferred that in the cross section in the longitudinal direction of blowing device 1 (i.e. trolley movement direction) horizontally and vertically, spray
Aperture blowing 202 is not to be equally distributed in equidistantly or top and the side wall of the inwall of blow 2.
Typically, the lower edge of side interior wall injection hole 202 highly should be higher than that bed depth (both vertical height of pallet 5
It is 10-50cm to spend difference, such as 30 or 40cm).
The device 1 also includes being arranged on the sidepiece of blow 2, the side seals 4 with the junction of sintering pallet 5.
It is preferred that the thickness of the injection internal cavity of plenum chamber 21 is 2-90mm, preferably 5-70mm, more preferably 7-50mm, preferably 9-
30cm, such as 10 or 20cm.
Typically, circular, ellipse is presented in the cross section for the injection hole 22 being distributed on the top and side wall of the inwall of blow 2
Shape, triangle, rectangle, pentagon, or hexagon.It is preferred that the average diameter of injection hole 22 is 1-30mm, preferably 1.2-20mm,
More preferably 1.5-15mm, more preferably 2-6mm.
It is preferred that the device also includes injection control system 6, injection control system 6 includes flow-through orifice 601, control module
602 and be arranged at injection branch pipe 302 on burnt gas valve 603, wherein flow-through orifice 601 located at injection branch pipe 302 on, control mould
Block 602 is connected with flow-through orifice 601 and burnt gas valve 603 respectively, and control module 602 receives the detection data of flow-through orifice 601,
It is compared with the predetermined target value in module, so as to control the aperture of burnt gas valve 603, change combustion gas real-time traffic with
Meet blowing process requirement.
It is preferred that being additionally provided with multiple cowling panels 7 arranged in parallel in blow 2, cowling panel 7 is vertically arranged；It is preferred that cowling panel
Distance of 7 bottom at the top of the bed of material is 50-200cm, such as 100cm.It is preferred that between adjacent cowling panel 7 arranged in parallel
Away from for 10-50cm, such as 20,30 or 40cm.It is preferred that the thickness of cowling panel 7 is 6-50mm, more preferably 10-40mm, such as
30mm。
The present invention also provides a kind of sintering equipment, and it includes the intracavity injection dress any one of claim 1-9
1, seal 4, pallet 5 are put, the bottom of blow 2 and pallet 5 are tightly connected by the seal 4.
In the application, the longitudinal direction (i.e. trolley movement direction) of blowing device 1 is equal to the longitudinal direction of blow 2 (i.e. chassis fortune
Dynamic direction).
Embodiment 1
A kind of intracavity blowing device 1, including blow 2, the fuel gas transmission pipeline 3 being connected with blow 2, blow 2
It is interior to be provided with injection plenum chamber 201, and distributed 6 in blow 2 on the longitudinal direction of blowing device 1 (i.e. trolley movement direction)
Individual inner chamber 201, correspondingly, there are 6 injection branch pipes 302 to be connected respectively with each inner chamber 201.Fuel gas transmission pipeline 3 includes phase successively
Injection house steward 301 even and 6 injection branch pipes 302.The device 1 also includes being arranged on the sidepiece of blow 2 and sintering pallet 5
The side seals 4 of junction.
Along the traffic direction of chassis, the length of blow 2 is 16 meters.In the length, 4 are set altogether in blow 2
Individual inner chamber 201 disconnected each other.Along the traffic direction of chassis, the length of each inner chamber 201 is 3.9m.
Injection hole 202 is located at the top of the inwall of blow 2 and side wall, in the distribution of upper tightly lower sparse, the injection hole 202 at top
Quantity more than any one side wall injection hole 202 quantity.
For the cross section in the longitudinal direction of blowing device 1 (i.e. trolley movement direction) horizontally and vertically and
Speech, 50 injection holes 202 are in the horizontal direction to be equally distributed in the top of the inwall of blow 2, in addition, 30 injection holes
202 in vertical direction to be equally distributed in each side wall of blow 2.The height of the minimum injection hole 202 in position in side wall
The difference of the height at the top of degree and the chassis bed of material is 30-50cm.
Circle, and a diameter of 5cm is presented in the cross section of injection hole 202.Injection the internal cavity of plenum chamber 201 thickness be
25cm。
Intracavity blowing device 1 also includes injection control system 6, and injection control system 6 includes flow-through orifice 601, control
Module 602 and the burnt gas valve 603 being arranged on injection branch pipe 302, wherein flow-through orifice 601 is on injection branch pipe 302, control
Molding block 602 is connected with flow-through orifice 601 and burnt gas valve 603 respectively, and control module 602 receives the detection of flow-through orifice 601
Data, it is compared with the predetermined target value in module, so as to control the aperture of burnt gas valve 603, it is real-time to change combustion gas
Flow is to meet blowing process requirement.
Embodiment 2
It is same as Example 1, cowling panel 7 is simply additionally provided with blow 2, cowling panel 7 is vertically arranged.The bottom of cowling panel 7
End is set parallel to each other apart from bed of material 50cm, cowling panel 7, and the spacing of adjacent cowling panel 7 is 40cm.
Embodiment 3
Using the sintering equipment of above-mentioned intracavity blowing device, including intracavity blowing device 1, seal 4, pallet
5, blow 2 and pallet 5 are tightly connected by seal 4.
Claims (10)
1. a kind of intracavity blowing device (1), the device includes the spray with inner chamber (201) above pallet (5)
Blow cover (2), gas supply pipeline (3), the injection branch pipe (302) connected with the inner chamber (201) of blow (2), and with injection
The injection house steward (301) of branch pipe (302) connection；Wherein longitudinal direction (i.e. platform of the inner chamber (201) of blow (2) in blowing device (1)
The car direction of motion) on cross section be rendered as doorframe shape or inverted U-shaped, the top inner wall and side interior wall of blow (2) are designed with
Multiple injection holes (202) connected with inner chamber 201.
2. device as claimed in claim 1, it is characterised in that on the longitudinal direction of blowing device (1) (i.e. trolley movement direction)
The one or more inner chambers (201) of distribution in blow (2)；It is preferred that the quantity of inner chamber (201) is 1-10, it is preferable that 2-8,
More preferably 3-6, more preferably 4-5, and correspondingly, the quantity of the injection branch pipe (302) connected with each inner chamber is 1-10, excellent
Choosing, 2-8, more preferably 3-6, more preferably 4-5.
3. device as claimed in claim 1 or 2, it is characterised in that longitudinal direction of the injection hole (202) along blowing device (1) is (i.e.
Trolley movement direction) on not to be equally distributed in equidistantly or the top and side wall of blow (2) inwall.
4. such as the device any one of claim 1-3, it is characterised in that in the longitudinal direction of blowing device (1), (i.e. chassis is transported
Dynamic direction) cross section horizontally and vertically, injection hole (202) is not to be equally distributed in equidistantly or blow
(2) top of inwall and side wall.
5. such as the device any one of claim 1-4, it is characterised in that side interior wall injection hole (202) lower edge height
It should be higher than that the bed depth of pallet (5) (both vertical drops are 10-50cm)；And/or
The device (1) also includes being arranged on blow (2) sidepiece, the side seals (4) with sintering pallet (5) junction.
6. such as the device any one of claim 1-5, it is characterised in that injection plenum chamber (21) internal cavity thickness be
2-90mm, preferably 5-70mm, more preferably 7-50mm.
7. such as the device any one of claim 1-6, it is characterised in that be distributed in blow (2) inwall top and
Circular, ellipse, triangle, rectangle, pentagon, or hexagon is presented in the cross section of injection hole (22) in side wall；It is preferred that spray
The average diameter of aperture blowing (22) is 1-30mm, preferably 1.2-20mm, more preferably 1.5-15mm, more preferably 2-6mm.
8. such as the device any one of claim 1-7, it is characterised in that the device also includes injection control system (6),
Injection control system (6) includes flow-through orifice (601), control module (602) and the gas valve being arranged on injection branch pipe (302)
Door (603), wherein flow-through orifice (601) in injection branch pipe (302), control module (602) respectively with flow-through orifice (601)
Be connected with burnt gas valve (603), control module (602) receive flow-through orifice (601) detection data, by its with it is pre- in module
If desired value is compared, so as to control the aperture of burnt gas valve (603), change combustion gas real-time traffic to meet that blowing process will
Ask.
9. such as the device any one of claim 1-8, it is characterised in that be additionally provided with multiple parallels in blow (2)
The cowling panel (7) of row, cowling panel (7) are vertically arranged；It is preferred that distance of the bottom of cowling panel (7) at the top of the bed of material is 50-
200cm, such as 100cm；It is preferred that the spacing of adjacent cowling panel (7) arranged in parallel is 10-50cm, such as 20,30 or 40cm；
It is preferred that the thickness of cowling panel (7) is 6-50mm, such as 30mm.
10. a kind of sintering equipment, it includes intracavity blowing device (1), the seal any one of claim 1-9
(4) bottom of blow (2) and pallet (5) are tightly connected by, pallet (5), the seal (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610754018.XA CN107782144B (en) | 2016-08-29 | 2016-08-29 | A kind of intracavity blowing device and sintering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610754018.XA CN107782144B (en) | 2016-08-29 | 2016-08-29 | A kind of intracavity blowing device and sintering equipment |
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| Publication Number | Publication Date |
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| CN107782144A true CN107782144A (en) | 2018-03-09 |
| CN107782144B CN107782144B (en) | 2019-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108267010A (en) * | 2018-03-28 | 2018-07-10 | 中冶长天国际工程有限责任公司 | A kind of combustion gas blowing device and blowing method eliminated crosswind and influenced |
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| CN107782144B (en) | 2019-08-13 |
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