CN106755740A - A kind of desulfurizing iron rotary blowing equipment and blowing method - Google Patents
A kind of desulfurizing iron rotary blowing equipment and blowing method Download PDFInfo
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- CN106755740A CN106755740A CN201611141163.7A CN201611141163A CN106755740A CN 106755740 A CN106755740 A CN 106755740A CN 201611141163 A CN201611141163 A CN 201611141163A CN 106755740 A CN106755740 A CN 106755740A
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- Prior art keywords
- walking dolly
- spray gun
- cylinder
- hollow shaft
- steel rail
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
A kind of desulfurizing iron rotary blowing equipment and blowing method, blowing device includes rotating mechanism, walking dolly, groove steel rail, positioning cylinder, groove steel rail is vertically fixed on metal steel structure framework, walking dolly is walked in groove steel rail by road wheel, the bearing block and motor of rotating mechanism are fixed on walking dolly, the walking dolly back side is provided with cylinder, one end of cylinder is fixed on metal steel structure framework, other end apical grafting walking dolly.Compared with prior art, the beneficial effects of the invention are as follows：Integration is higher, occupies little space；Dynamic condition is good, equipment using stabilization, do not rock；Molten iron stirs, and high-efficiency desulfurization, production efficiency is high, and desulfurization powder consumption is few, reduces production cost；The process conditions for smelting clean steel can be met.
Description
Technical field
The present invention relates to smelting iron and steel technical field of hot metal pretreatment, more particularly to a kind of desulfurizing iron is set with rotary blowing
Standby and blowing method.
Background technology
Desulfurizing iron is the iron water treatment technology for proceeding by 50~sixties of 20th century research and application.At present,
The domestic widely used molten iron desulfurizing method of steel mill has two kinds：Gunite and KR methods.
See Fig. 8, gunite is to utilize inert gas for carrier, and desulfurization powder is sprayed by the spray gun 20 that refractory material is made
Enter in molten iron 18, desulfurizing agent is reacted with molten iron 18, so as to reach the purpose of desulfurization.Gunite weak point：Desulfurization powder with
Sulphur in molten iron 18 can not be combined fully, and desulfuration efficiency is low, and sorbent consumption is more.
See Fig. 9, KR methods are developed by Japanese nineteen ninety-five earliest.It is by pouring fireproof material and through the cross of overbaking
Shape stirring-head, molten iron certain depth in immersion ladle, using the whirlpool produced under the effect of the high degree of agitation of large stirrer 19,
Desulfurization powder is contacted and is reacted with molten iron 18, reach desulfurization purpose.KR method weak points：The metallurgical equipment for using is complicated, into
This height.
At present, in domestic major steel mill, the relatively early desulfurization production line gone into operation, mostly gunite, the later stage it is newly-built be generally
KR methods.It should be noted that --- --- KR method desulfuration efficiencies are higher, desulfurization powder consumption is lower, is more suitable for smelting fine work steel, but
One-time investment is very big simultaneously, and floor space is very big, therefore the steel mill of operation gunite desulfurization before, and many producers all want to pass through
Transformation, is replaced by highly efficient KR method desulfurization production lines, but often due to the reason for original narrow field, invests too big original
Because etc. cannot realize.
The patent document of Patent No. CN201110284037.8 discloses " a kind of desulfuring spray gun ", by power set,
Transmission device etc., realizes rotation of the spray gun in sweetening process, desulfurization powder is mixed with molten iron stirring, improves desulfurized effect,
And save desulfurization powder, and taken up room relative to KR method desulfurization production lines its structures smaller, it is easier to realize existing equipment
Transformation.
But, the power set of the equipment employ four motors and are driven from the clamping sides of spray gun, and it takes up room also
It is very big.Two driving motors set from side are alternately rotated spray gun or so, and the rotation mode makes the blade of spray gun always
Against the turn direction motion of molten iron, one is that the blade for making spray gun is subject to larger resistance in molten iron, shortens spray gun service life；
Two is that desulfurization powder is bad with molten iron mixed effect, and desulfurized effect is not also good to the uneven of molten iron stirring；Three is to be easier to draw
The equipment of rising is rocked.It is that cannot ensure whole in addition, being individually to be clamped fixation to rotary spray gun body using two motors
Individual equipment firm and do not rock.
The content of the invention
The purpose of the present invention is to overcome deficiency of the prior art, there is provided a kind of desulfurizing iron with rotary blowing equipment and
Blowing method, the integration of equipments is higher, occupies little space；Dynamic condition is good, equipment using stabilization, do not rock；Molten iron is stirred
Uniformly, high-efficiency desulfurization, production efficiency is high, and desulfurization powder consumption is few, reduces production cost；The technique bar for smelting clean steel can be met
Part.
To achieve the above object, the present invention is realized using following technical scheme：
A kind of desulfurizing iron rotary blowing equipment, including rotating mechanism, walking dolly, groove steel rail, positioning cylinder, groove
Steel track is vertically fixed on metal steel structure framework, and walking dolly is walked in groove steel rail by road wheel, rotating mechanism
Bearing block and motor be fixed on walking dolly, the walking dolly back side is provided with cylinder, one end of cylinder is fixed on metal
On steel structure frame, other end apical grafting walking dolly.
The rotating mechanism includes motor, swivel joint, gear, bearing block, hollow shaft, flange, spray gun, the two of hollow shaft
End is arranged on bearing block by bearing, and gear is fixed with hollow shaft, and gear is also fixed with the output shaft of motor, empty
Gear on heart axle is intermeshed with the gear on motor output shaft, and the upper end of hollow shaft connects desulfurization powder by swivel joint
Pipeline, the lower end of hollow shaft connects spray gun by flange.
The spray gun includes gun body hardware, refractory masses, blade, and the bottom of hardware offers spray
Mouth, refractory masses are cast with the lower half of hardware, and the periphery of refractory masses is provided with refractory material material
Blade.
The walking dolly includes car body steel plate, road wheel, wheel shaft, and car body Interal fixation on wheel shaft, install by road wheel
At the two ends of wheel shaft.
A kind of desulfurizing iron as claimed in claim 1 blowing method of rotary blowing equipment, specific method is as follows：
1) hot-metal bottle is moved to the lower end of rotary blowing equipment, is filled by the handling on metal steel structure framework afterwards
Put, by walking dolly and the downward amplifier of rotating mechanism, walking dolly is travel downwardly along groove steel rail, when marching to station, stops
The decentralization of spin-ended rotation mechanism, starts the cylinder at the walking dolly back side, and cylinder withstands the back side of walking dolly, makes walking dolly and rotation
Rotation mechanism is fixed between groove steel rail and cylinder in the horizontal direction, effectively prevent rotary blowing equipment because bottom spray gun revolves
Change a job produced huge centrifugal force when making, and acutely rocking of causing；
2) desulfurization powder is conveyed via pipeline in hollow shaft and spray gun using compressed gas, final injection to molten iron
In, while starting motor, drive hollow shaft and spray gun to rotate by motor, the blade on spray gun carries out desulfurization powder with molten iron
It is sufficiently stirred for；During stirring, due to the effect of cylinder, it is fixedly positioning between walking dolly and groove steel rail, makes rotation
Blowing device stabilization rotation is without rocking, it is ensured that desulfuration operations are smoothed out.
Compared with prior art, the beneficial effects of the invention are as follows：
1) integration of the present invention is higher, occupies little space, on the basis of original Desulfurization by injecting method production line, slight modification
It is capable of achieving, invests extremely low.
2) equipment dynamic condition of the invention is good, using stabilization, does not rock, and improves production security.
3) spray gun of the invention can realize 360 ° of rotations, and molten iron is stirred from a direction, molten iron is formed whirlpool
Whirlpool, molten iron stirs, while being that by gun body be blown to the molten iron for being stirred desulfurization powder by carrier using inert gas
In, it is allowed to fully be reacted with molten iron, so as to reach the purpose of high-efficiency desulfurization, can fully meet the process conditions for smelting clean steel.
4) production efficiency of the present invention is high, and desulfurization powder consumption is few, reduces production cost.
Brief description of the drawings
Fig. 1 is a kind of structural representation (front) of desulfurizing iron rotary blowing equipment of the invention；
Fig. 2 is a kind of structural representation (back side) of desulfurizing iron rotary blowing equipment of the invention；
Fig. 3 is a kind of structural representation (local broken away view) of desulfurizing iron rotary blowing equipment of the invention；
Fig. 4 is the structural representation of rotating mechanism in the present invention；
Fig. 5 is the structural representation of spray gun in the present invention；
Fig. 6 is the top view of Fig. 5；
Fig. 7 is working state schematic representation of the invention；
Fig. 8 is the schematic diagram of gunite desulfurization in the prior art；
Fig. 9 is the schematic diagram of KR methods desulfurization in the prior art.
In figure：1- motors, 2- gears, 3- bearing blocks, 4- flanges, 5- spray guns, 6- blades, 7- backboards, 8- hollow shafts, 9- rotations
Adapter, 10- groove steel rails, 11- car bodies steel plate, 12- cylinders, 13- road wheels, 14- wheel shafts, 15- hardwares, 16- are firm
Jade-silicon carbide-carbon castable, 17- corundum-silicon carbide castable, 18- molten iron, 19- agitators, the spray gun of 20- prior arts.
Specific embodiment
Embodiments of the present invention are further illustrated below in conjunction with the accompanying drawings：
See Fig. 1-Fig. 3, a kind of desulfurizing iron rotary blowing equipment, including rotating mechanism, walking dolly, groove steel rail
10th, positioning cylinder 12, groove steel rail 10 is vertically fixed on metal steel structure framework, and walking dolly is walked in by road wheel 13
In groove steel rail 10, the bearing block 3 and motor 1 of rotating mechanism are fixed on walking dolly, are provided with the back side of walking dolly
Cylinder 12, one end of cylinder 12 is fixed on metal steel structure framework, other end apical grafting walking dolly.The quantity of cylinder 12 is 2-
4, using the standard type cylinder such as 10A-5,10A-5R.
See Fig. 4, the rotating mechanism includes motor 1, swivel joint 9, gear 2, bearing block 3, hollow shaft 8, flange 4, spray
Rifle 5, the two ends of hollow shaft 8 are arranged on bearing block 3 by bearing, gear are fixed with hollow shaft 8, in the output of motor 1
Also gear 2 is fixed with axle, the gear in hollow shaft 8 is intermeshed with the gear 2 on the output shaft of motor 1, the upper end of hollow shaft 8
Desulfurization powder pipeline is connected by swivel joint 9, the lower end of hollow shaft 8 connects spray gun 5 by flange 4.
, using No. 45 steel or 20Cr steel or 40Cr steel or the making of 42CrMo steel, motor turns with hollow shaft for flange and hollow shaft
The Hardened gear face straight spur gear that moving gear 2 can be fabricated to using materials such as No. 45 steel or 40Cr steel.
Upper and lower two bearing blocks 3 and motor 1 are fixed on backboard 7, and backboard 7 is fixed on car body steel plate 11, small by walking
Car drives and moves up and down.
See Fig. 5, Fig. 6, the spray gun 5 includes hardware 15, refractory masses, blade 6, the bottom of hardware 15
Portion offers nozzle, and refractory masses are cast with the lower half of hardware 15, is provided with the periphery of refractory masses
The blade 6 of refractory material material.
Whole spray gun 5 is made up of hardware 15 with the cast of high-performance refractory Material cladding, and hardware 15 is by height
Strength structure steel is made, and it is hollow pipe that it is internal, and the outer layer castable slag line position of hardware 15 uses corundum-carbonization
Silico-carbo castable 16 (slag line position refers to the position that spray gun is in molten iron upper surface slag), the body of a gun position of hardware 15
Put using corundum-silicon carbide castable 17 (body of a gun position refer to spray gun submerge molten iron part), bottom blade 6 using intensity very
The good corundum castable of high, wearability.
The bottom nozzle of spray gun 5 can make it is in pairs blow or the form such as three blow spray gun, the blade 6 of the bottom of spray gun 5 can make 2
The types such as oar, 3 oars, 4 oars, 6 oars.
The walking dolly includes car body steel plate 11, road wheel 13, wheel shaft 14, and car body steel plate 11 is fixed on wheel shaft 14,
Road wheel 13 is arranged on the two ends of wheel shaft 14.Road wheel 13 is embedded in the channel-section steel groove of groove steel rail 10, when cylinder 12 from car body steel
When the back side of plate 11 holds out against, the road wheel 13 of walking dolly is clamped on the channel-section steel inwall of groove steel rail 10, make walking dolly and
It is fixedly positioning between whole rotating mechanism and groove steel rail 10, so as to avoid that is caused during spray gun 5 rotates from entirely setting
Standby vibration and rock.
Walking dolly in the present invention is connected by chain with handling appliance, realizes the up-downgoing in groove steel rail 10
Walk.
A kind of desulfurizing iron as claimed in claim 1 blowing method of rotary blowing equipment, specific method is as follows：
1) hot-metal bottle is moved to the lower end of rotary blowing equipment, is filled by the handling on metal steel structure framework afterwards
Put, by walking dolly and the downward amplifier of rotating mechanism, walking dolly is travel downwardly along groove steel rail 10, when marching to station,
Stop the rotation the decentralization of mechanism, start the cylinder 12 at the walking dolly back side, cylinder 12 withstands the back side of walking dolly, makes walking small
Car and rotating mechanism are fixed between groove steel rail 10 and cylinder 12 in the horizontal direction, effectively prevent rotary blowing equipment because
Produced huge centrifugal force during 5 rotary work of spray gun of bottom, and cause acutely rock；
2) desulfurization powder is conveyed via pipeline in hollow shaft 8 and spray gun 5 using compressed gas, final injection to iron
In water 18, while starting motor 1, hollow shaft 8 and spray gun 5 is driven to rotate by motor 1, the blade 6 on spray gun 5 is by desulfurization powder
It is sufficiently stirred for molten iron 18；During stirring, due to the effect of cylinder 12, between walking dolly and groove steel rail 10
It fixedly positioning, makes the stabilization rotation of rotary blowing equipment without rocking, it is ensured that desulfuration operations are smoothed out.
Embodiment 1：
Northeast steel mill desulfurization production line is built in 1999, belongs to gunite desulfurization.Recently as carrying for fine work steel ratio
Height, increasingly improves to Deep Desulphurization of Hot Metal requirement, and original gunite desulfurization can not meet new smelting condition and requirement, therefore
The desulfurization production line in the newly-built work area of the steel mill uses KR methods after 2010, but original gunite improvement of manufacturing line is very tired
Difficulty, narrow field is maximum problem, while transform changing very big, investment is also very big, so cannot implement.
After employ desulfurizing iron rotary blowing method (spinning rotor) of the invention, hereinafter referred to as SR methods.Only
Slightly reinforce in original position, transform, pay a small amount of investment, that is, realize original spray gun as KR methods agitator 19 in iron
Rotated in water 18, allow desulfurization powder more fully to contact and react with molten iron 18, so, not only save making for desulfurization powder
Consumption, reduces cost, while compared with original gunite, substantially increasing desulfuration operations efficiency, meets the bar for smelting fine work steel
Part and requirement.
The technical requirements of different molten iron kinds in SR sulfur removal technologies are deferred to, the rotating speed of spray gun 5 must realize adjustable (20-60
Rev/min), while the integration of the equipment of raising, motor 1 uses motor for speed reducer integrally, with frequency converter.Using double in embodiment
The oar spray gun of formula 4 is blown, flange 4 and hollow shaft 8 are made using 20Cr steel, and motor 1 uses No. 45 steel with the rotate gear 2 of hollow shaft 8
Make, rotating mechanism is fixed using 2 cylinders 12.
Implementation result is shown in Table 1：
Table 1：Using the contrast before SR methods with 20 tank desulfurizing iron effects and desulfurization powder consumption value afterwards
As can be seen from Table 1：It is 83.71% to use desulfurization degree before SR methods, and use after SR methods desulfurization degree for
88.55%, 4.84% is improve, deep desulfurization performance is excellent.
Using before SR methods desulfurization powder consume 597 kilograms/tank, and use SR methods after desulfurization powder consume 463 kilograms/
Tank, reduces by 134 kilograms/tank of consumption, and economic effect is obvious.
Claims (5)
1. a kind of desulfurizing iron rotary blowing equipment, it is characterised in that including rotating mechanism, walking dolly, groove steel rail, fixed
Position cylinder, groove steel rail is vertically fixed on metal steel structure framework, and walking dolly is walked in groove steel rail by road wheel,
The bearing block and motor of rotating mechanism are fixed on walking dolly, and the walking dolly back side is provided with cylinder, and one end of cylinder is consolidated
It is scheduled on metal steel structure framework, other end apical grafting walking dolly.
2. a kind of desulfurizing iron rotary blowing equipment according to claim 1, it is characterised in that the rotating mechanism bag
Motor, swivel joint, gear, bearing block, hollow shaft, flange, spray gun are included, the two ends of hollow shaft are arranged on bearing block by bearing
On, gear is fixed with hollow shaft, gear is also fixed with the output shaft of motor, the gear in hollow shaft is exported with motor
Gear intermeshing on axle, the upper end of hollow shaft connects desulfurization powder pipeline by swivel joint, and the lower end of hollow shaft passes through
Flange connects spray gun.
3. a kind of desulfurizing iron rotary blowing equipment according to claim 2, it is characterised in that the spray gun includes rifle
Body hardware, refractory masses, blade, the bottom of hardware offer nozzle, in the lower half of hardware
Refractory masses are cast with, the periphery of refractory masses is provided with the blade of refractory material material.
4. a kind of desulfurizing iron rotary blowing equipment according to claim 1, it is characterised in that the walking dolly bag
Car body steel plate, road wheel, wheel shaft are included, on wheel shaft, road wheel is arranged on the two ends of wheel shaft to car body Interal fixation.
5. a kind of desulfurizing iron as claimed in claim 1 blowing method of rotary blowing equipment, it is characterised in that specific side
Method is as follows：
1) hot-metal bottle is moved to the lower end of rotary blowing equipment, afterwards by the handling apparatus on metal steel structure framework, will
Walking dolly and the downward amplifier of rotating mechanism, walking dolly is travel downwardly along groove steel rail, when marching to station, stops the rotation
The decentralization of mechanism, starts the cylinder at the walking dolly back side, and cylinder withstands the back side of walking dolly, makes walking dolly and rotating mechanism
It is fixed between groove steel rail and cylinder in the horizontal direction, effectively prevent rotary blowing equipment because of bottom spray gun rotary work
When produced huge centrifugal force, and cause acutely rock；
2) desulfurization powder is conveyed via pipeline in hollow shaft and spray gun using compressed gas, in final injection to molten iron, together
Shi Qidong motors, drive hollow shaft and spray gun to rotate by motor, and the blade on spray gun carries out fully desulfurization powder and molten iron
Stirring；During stirring, due to the effect of cylinder, it is fixedly positioning between walking dolly and groove steel rail, makes rotary blowing
Equipment stabilization rotation is without rocking, it is ensured that desulfuration operations are smoothed out.
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| CN201611141163.7A CN106755740B (en) | 2016-12-12 | 2016-12-12 | A kind of desulfurizing iron rotary blowing equipment and blowing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141163.7A CN106755740B (en) | 2016-12-12 | 2016-12-12 | A kind of desulfurizing iron rotary blowing equipment and blowing method |
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| CN106755740A true CN106755740A (en) | 2017-05-31 |
| CN106755740B CN106755740B (en) | 2019-09-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107523665A (en) * | 2017-09-20 | 2017-12-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Desulfurization rifle |
| CN107739777A (en) * | 2017-10-30 | 2018-02-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Rotary desulfurization spray gun flange connection |
| CN107760827A (en) * | 2017-10-26 | 2018-03-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Rotation desulfurization rifle for molten iron pretreatment |
| CN108374070A (en) * | 2018-05-04 | 2018-08-07 | 北京京科名创工程技术有限公司 | It is blown injecting agitating device |
| CN115505667A (en) * | 2022-09-19 | 2022-12-23 | 首钢集团有限公司 | KR powder injection molten iron pretreatment method |
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