CN106755740B - 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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- CN106755740B CN106755740B CN201611141163.7A CN201611141163A CN106755740B CN 106755740 B CN106755740 B CN 106755740B CN 201611141163 A CN201611141163 A CN 201611141163A CN 106755740 B CN106755740 B CN 106755740B
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- walking dolly
- spray gun
- cylinder
- steel rail
- hollow shaft
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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
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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
- 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 frame, walking dolly is walked in groove steel rail by traveling 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 frame, other end apical grafting walking dolly.Compared with prior art, it the beneficial effects of the present invention are: integration is higher, occupies little space；Dynamic condition is good, and equipment is shaken using stabilization, not；Molten iron stirs evenly, high-efficiency desulfurization, high production efficiency, 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, in particular to a kind of desulfurizing iron is set with rotary blowing
Standby and blowing method.
Background technique
Desulfurizing iron is the iron water treatment technology for 50~sixties of 20th century starting to be studied and applied.Currently,
There are two types of the domestic widely used molten iron desulfurizing methods of steel mill: gunite and KR method.
See Fig. 8, it is carrier that gunite, which is using inert gas, and desulfurization powder spray gun 20 made of refractory material is sprayed
Enter in molten iron 18, react desulfurizing agent with molten iron 18, to achieve the purpose that desulfurization.Gunite shortcoming: desulfurization powder with
Sulphur in molten iron 18 cannot be combined sufficiently, and desulfuration efficiency is low, and sorbent consumption is more.
See Fig. 9, KR method was developed by Japanese nineteen ninety-five earliest.It is by pouring fireproof material and through the cross of overbaking
Shape stirring-head immerses molten iron certain depth in ladle, using the whirlpool that generates under the effect of 19 high degree of agitation of large stirrer,
So that desulfurization powder is contacted and is reacted with molten iron 18, reaches desulfurization purpose.KR method shortcoming: the metallurgical equipment used is complicated, at
This height.
Currently, in domestic major steel mill, the desulfurization production line more early gone into operation, mostly gunite, the later period it is newly-built be generally
KR method.It should be noted that --- --- KR method desulfuration efficiency is higher, desulfurization powder consumption is lower, is more suitable for smelting fine work steel, but
One-time investment is very big simultaneously, and occupied area is very big, therefore the steel mill of operation gunite desulfurization before, many producers all want to pass through
Transformation, is changed to highly efficient KR method desulfurization production line, but often due to invests too big original the reason of original narrow field
Because etc. due to cannot achieve.
The patent document of Patent No. CN201110284037.8 discloses " a kind of desulfuring spray gun ", by power device,
Transmission device etc. realizes rotation of the spray gun in sweetening process, is stirred desulfurization powder with molten iron, improves desulfurization effect,
And desulfurization powder is saved, relative to KR method desulfurization production line, its structure occupied space is smaller, is easier to realize existing equipment
Transformation.
But the power device of the equipment uses four motors and is driven from the clamping sides of spray gun, occupied space is also
It is very big.Two driving motors being arranged from side are alternately rotated spray gun or so, which makes the blade of spray gun always
Against the turn direction movement of molten iron, first is that the blade of spray gun is made, by biggish resistance, to shorten spray gun service life in molten iron；
Second is that desulfurization powder and molten iron mixed effect are bad, and desulfurization effect is also bad to the uneven of molten iron stirring；Third is that being easier to draw
Play the shaking of equipment.In addition, using two motors only fixation individually is clamped to rotary spray gun ontology, be not can guarantee it is whole
It a equipment firm and does not shake.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, provide a kind of desulfurizing iron rotary blowing equipment and
Blowing method, the integration of equipments is higher, occupies little space；Dynamic condition is good, and equipment is shaken using stabilization, not；Molten iron stirring
Uniformly, high-efficiency desulfurization, high production efficiency, desulfurization powder consumption is few, reduces production cost；The technique item for smelting clean steel can be met
Part.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of desulfurizing iron rotary blowing equipment, including rotating mechanism, walking dolly, groove steel rail, positioning cylinder, slot
Steel track is vertically fixed on metal steel structure frame, and walking dolly is walked in groove steel rail by traveling 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, rotary joint, gear, bearing block, hollow shaft, flange, spray gun, and the two of hollow shaft
End is mounted on bearing block by bearing, and gear is fixed in hollow shaft, gear is also fixed on the output shaft of motor, empty
Gear intermeshing on gear and motor output shaft in mandrel, the upper end of hollow shaft connects desulfurization powder by rotary joint
The lower end of pipeline, hollow shaft passes through flanged joint spray gun.
The spray gun includes gun body hardware, refractory material layer, blade, and the bottom of hardware offers spray
Mouth, is cast with refractory material layer in the lower half of hardware, and the periphery of refractory material layer is provided with refractory material material
Blade.
The walking dolly includes car body steel plate, traveling wheel, wheel shaft, and car body Interal fixation is on wheel shaft, traveling wheel installation
At the both ends of wheel shaft.
A kind of desulfurizing iron as described in claim 1 blowing method of rotary blowing equipment, the specific method is as follows:
1) hot-metal bottle is moved to the lower end of rotary blowing equipment, passes through the handling dress on metal steel structure frame later
It sets, by walking dolly and the downward amplifier of rotating mechanism, walking dolly is travelled downwardly along groove steel rail, when marching to station, is stopped
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 prevents rotary blowing equipment because lower part spray gun revolves
Change a job produced huge centrifugal force when making, caused by acutely shake；
2) desulfurization powder is conveyed via pipeline into hollow shaft and spray gun using compressed gas, molten iron is arrived in final blowing
In, while starting motor, it is rotated by motor driven hollow shaft and spray gun, the blade on spray gun carries out desulfurization powder and molten iron
It is sufficiently stirred；It during stirring, due to the effect of cylinder, is fixedly positioning between walking dolly and groove steel rail, makes to rotate
Blowing device stablizes rotation without shaking, and guarantees going on smoothly for desulfuration operations.
Compared with prior art, the beneficial effects of the present invention are:
1) integration of the present invention is higher, occupies little space, slightly modified on the basis of original Desulfurization by injecting method production line
It can be realized, invest extremely low.
2) equipment dynamic condition of the invention is good, using stabilization, does not shake, and improves production security.
3) 360 ° of rotations may be implemented in spray gun of the invention, are stirred from a direction to molten iron, and molten iron is made to form whirlpool
Whirlpool, molten iron stir evenly, while being blown desulfurization powder to the molten iron stirred by gun body for carrier using inert gas
In, it is allowed to sufficiently react with molten iron, to achieve the purpose that high-efficiency desulfurization, can sufficiently meet the process conditions for smelting clean steel.
4) high production efficiency of the present invention, desulfurization powder consumption is few, reduces production cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram (front) of desulfurizing iron rotary blowing equipment of the present invention；
Fig. 2 is a kind of structural schematic diagram (back side) of desulfurizing iron rotary blowing equipment of the present invention；
Fig. 3 is a kind of structural schematic diagram of desulfurizing iron rotary blowing equipment (local broken away view) of the present invention；
Fig. 4 is the structural schematic diagram of rotating mechanism in the present invention；
Fig. 5 is the structural schematic diagram 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 method desulfurization in the prior art.
In figure: 1- motor, 2- gear, 3- bearing block, 4- flange, 5- spray gun, 6- blade, 7- backboard, 8- hollow shaft, 9- rotation
Adapter, 10- groove steel rail, 11- car body steel plate, 12- cylinder, 13- traveling wheel, 14- wheel shaft, 15- hardware, 16- are rigid
Jade-silicon carbide-carbon castable, 17- corundum-silicon carbide castable, 18- molten iron, 19- blender, the 20- prior art spray gun.
Specific embodiment
Embodiments of the present invention are further illustrated with reference to the accompanying drawing:
See Fig. 1-Fig. 3, a kind of desulfurizing iron rotary blowing equipment, including rotating mechanism, walking dolly, groove steel rail
10, positioning cylinder 12, groove steel rail 10 are vertically fixed on metal steel structure frame, and walking dolly is walked in by traveling wheel 13
In groove steel rail 10, the bearing block 3 and motor 1 of rotating mechanism are fixed on walking dolly, are provided at the back side of walking dolly
Cylinder 12, one end of cylinder 12 are fixed on metal steel structure frame, other end apical grafting walking dolly.The quantity of cylinder 12 is 2-
4, using the standard types cylinder such as 10A-5,10A-5R.
See that Fig. 4, the rotating mechanism include motor 1, rotary joint 9, gear 2, bearing block 3, hollow shaft 8, flange 4, spray
The both ends of rifle 5, hollow shaft 8 are mounted on bearing block 3 by bearing, are fixed with gear in hollow shaft 8, in the output of motor 1
Also gear 2 is fixed on axis, the gear in hollow shaft 8 and the gear 2 on 1 output shaft of motor are intermeshed, the upper end of hollow shaft 8
Desulfurization powder pipeline is connected by rotary joint 9, the lower end of hollow shaft 8 connects spray gun 5 by flange 4.
Flange and hollow shaft are using No. 45 steel or 20Cr steel or 40Cr steel or the production of 42CrMo steel, turn of motor 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
Vehicle drive moves up and down.
See that Fig. 5, Fig. 6, the spray gun 5 include hardware 15, refractory material layer, blade 6, the bottom of hardware 15
Portion offers nozzle, is cast with refractory material layer in the lower half of hardware 15, is provided in the periphery of refractory material layer
The blade 6 of refractory material material.
Entire spray gun 5 is made of hardware 15 and the casting of high-performance refractory Material cladding, and hardware 15 is by height
Strength structure steel is made, and internal is hollow pipe, and the outer layer castable slag line position of hardware 15 uses corundum-carbonization
Silico-carbo castable 16 (slag line position refers to that spray gun is in the position of molten iron upper surface steel slag), the body of a gun position of hardware 15
It sets using corundum-silicon carbide castable 17 (body of a gun position refers to that spray gun submerges molten iron part), lower part blade 6 uses intensity very
Corundum castable high, wearability is good.
5 bottom nozzle of spray gun can make in pairs blow or the spray gun for the forms such as three blow, the blade 6 of 5 lower part of spray gun can be made into 2
The types such as paddle, 3 paddles, 4 paddles, 6 paddles.
The walking dolly includes car body steel plate 11, traveling wheel 13, wheel shaft 14, and car body steel plate 11 is fixed on wheel shaft 14,
Traveling wheel 13 is mounted on the both ends of wheel shaft 14.Traveling wheel 13 is in the channel steel slot of groove steel rail 10, when cylinder 12 is from car body steel
When the back side of plate 11 is held out against, the traveling wheel 13 of walking dolly is clamped on the channel steel inner wall of groove steel rail 10, make walking dolly and
It is fixedly positioning between whole rotating mechanism and groove steel rail 10, to avoid entirely setting caused by during spray gun 5 rotates
It standby vibration and rocks.
Walking dolly in the present invention is connect by chain with handling appliance, realizes the uplink and downlink in groove steel rail 10
It walks.
A kind of desulfurizing iron as described in claim 1 blowing method of rotary blowing equipment, the specific method is as follows:
1) hot-metal bottle is moved to the lower end of rotary blowing equipment, passes through the handling dress on metal steel structure frame later
It sets, by walking dolly and the downward amplifier of rotating mechanism, walking dolly is travelled downwardly along groove steel rail 10, when marching to station,
The decentralization for mechanism of stopping rotating, starts the cylinder 12 at the walking dolly back side, and cylinder 12 withstands the back side of walking dolly, makes to walk small
Vehicle and rotating mechanism are fixed in the horizontal direction between groove steel rail 10 and cylinder 12, effectively prevent rotary blowing equipment because
Produced huge centrifugal force when 5 rotary work of spray gun of lower part, caused by acutely shake；
2) desulfurization powder is conveyed via pipeline into hollow shaft 8 and spray gun 5 using compressed gas, iron is arrived in final blowing
In water 18, while starting motor 1, drive hollow shaft 8 and spray gun 5 to rotate by motor 1, the blade 6 on spray gun 5 is by desulfurization powder
It is sufficiently stirred with molten iron 18；During stirring, due to the effect of cylinder 12, between walking dolly and groove steel rail 10
It fixedly positioning, so that rotary blowing equipment is stablized rotation without shaking, guarantee going on smoothly for desulfuration operations.
Embodiment 1:
Northeast steel mill desulfurization production line is built in 1999, belongs to gunite desulfurization.Recently as mentioning for fine work steel ratio
Height requires increasingly to improve to Deep Desulphurization of Hot Metal, and original gunite desulfurization has been unable to meet new smelting condition and requirement, therefore
The desulfurization production line that the steel mill creates work area after 2010 is all made of KR method, but original gunite improvement of manufacturing line is very tired
Difficulty, narrow field are the largest problem, while being transformed and changing very big, and investment is also very big, so can not implement.
Desulfurizing iron rotary blowing method (spinning rotor) of the invention, hereinafter referred to as SR method are used afterwards.Only
It slightly reinforces in original position, be transformed, pay a small amount of investment, that is, realize original spray gun as KR method blender 19 in iron
It is rotated in water 18, desulfurization powder is allowed more fully to contact and react with molten iron 18, in this way, not only saving making for desulfurization powder
Dosage reduces cost, while compared with original gunite, substantially increases desulfuration operations efficiency, meets the item for smelting fine work steel
Part and requirement.
The technical requirements of different molten iron kinds in SR sulfur removal technology are deferred to, the revolving speed of spray gun 5 must realize adjustable (20-60
Rev/min), while the integration of equipment is improved, motor 1 matches frequency converter using motor for speed reducer one.Using double in embodiment
It blows 4 paddle spray gun of formula, flange 4 and hollow shaft 8 to be made of 20Cr steel, the rotate gear 2 of motor 1 and hollow shaft 8 uses No. 45 steel
Production, is fixed rotating mechanism using 2 cylinders 12.
Implementation result is shown in Table 1:
Table 1: using the comparison before SR method with 20 tank desulfurizing iron effects and desulfurization powder consumption value later
As can be seen from Table 1: use before SR method desulfurization degree for 83.71%, and use after SR method desulfurization degree for
88.55%, 4.84% is improved, deep desulfurization performance is excellent.
Using before SR method desulfurization powder consume 597 kilograms/tank, and use SR method after desulfurization powder consume 463 kilograms/
Tank, reduces by 134 kilograms/tank of consumption, and economic effect is obvious.
Claims (2)
1. a kind of desulfurizing iron rotary blowing equipment, including rotating mechanism, walking dolly, groove steel rail, positioning cylinder, channel steel
Track is vertically fixed on metal steel structure frame, and walking dolly is walked in groove steel rail by traveling wheel, rotating mechanism
Bearing block and motor are fixed on walking dolly, the walking dolly back side are provided with cylinder, one end of cylinder is fixed on metallic steel
On structural framing, other end apical grafting walking dolly；The walking dolly includes car body steel plate, traveling wheel, wheel shaft, and car body steel plate is solid
It is scheduled on wheel shaft, traveling wheel is mounted on the both ends of wheel shaft；
Traveling wheel is in the channel steel slot of groove steel rail, when cylinder is held out against from the back side of car body steel plate, the walking of walking dolly
Wheel is clamped on the channel steel inner wall of groove steel rail, makes to fixedly positioning between walking dolly and whole rotating mechanism and groove steel rail,
To avoid the vibration of whole equipment caused by during spray gun rotates and rock；
The rotating mechanism includes motor, rotary joint, gear, bearing block, hollow shaft, flange, spray gun, and the both ends of hollow shaft are logical
It crosses bearing to be mounted on bearing block, gear is fixed in hollow shaft, gear, hollow shaft are also fixed on the output shaft of motor
On gear and motor output shaft on gear intermeshing, the upper end of hollow shaft passes through rotary joint connection desulfurization powder pipe
The lower end in road, hollow shaft passes through flanged joint spray gun；
The spray gun includes gun body hardware, refractory material layer, blade, and the bottom of hardware offers nozzle,
The lower half of hardware is cast with refractory material layer, and the periphery of refractory material layer is provided with the paddle of refractory material material
Leaf；
Be made it is characterized in that, entire spray gun is poured by hardware and high-performance refractory Material cladding, hardware by
High-tensile structural steel is made, and internal is hollow pipe, and the outer layer castable slag line position of hardware uses corundum-carbonization
Silico-carbo castable, the body of a gun position of hardware use corundum-silicon carbide castable, and lower part blade uses corundum castable；
Spray gun bottom nozzle is fabricated to three spray guns for blowing form.
2. a kind of blowing method of desulfurizing iron as described in claim 1 rotary blowing equipment, which is characterized in that specific side
Method is as follows:
1) hot-metal bottle is moved to the lower end of rotary blowing equipment, it, will later by the handling apparatus on metal steel structure frame
Walking dolly and the downward amplifier of rotating mechanism, walking dolly is travelled downwardly along groove steel rail, when marching to station, is stopped rotating
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 prevents rotary blowing equipment because of lower part spray gun rotary work
When produced huge centrifugal force, caused by acutely shake；
2) desulfurization powder is conveyed via pipeline into hollow shaft and spray gun using compressed gas, final blowing is into molten iron, together
Shi Qidong motor is rotated by motor driven hollow shaft and spray gun, and the blade on spray gun carries out desulfurization powder and molten iron abundant
Stirring；During stirring, due to the effect of cylinder, it is fixedly positioning between walking dolly and groove steel rail, makes rotary blowing
Equipment stablizes rotation without shaking, and guarantees going on smoothly for desulfuration operations.
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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 |
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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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| 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 |
| CN115505667B (en) * | 2022-09-19 | 2023-09-15 | 首钢集团有限公司 | KR powder spraying molten iron pretreatment method |
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| CN203846050U (en) * | 2014-03-28 | 2014-09-24 | 中冶华天工程技术有限公司 | Safety protection device for preventing drop of oxygen lance during blowing process |
| CN105256102A (en) * | 2014-07-16 | 2016-01-20 | 鞍钢股份有限公司 | Blowing and stirring integrated type molten iron pretreatment desulphurization device and method |
| CN106086312A (en) * | 2016-07-07 | 2016-11-09 | 中冶南方工程技术有限公司 | A kind of Desulfuring Device of Hot Metal and method |
| CN206428282U (en) * | 2016-12-12 | 2017-08-22 | 鞍山市和丰耐火材料有限公司 | A kind of desulfurizing iron rotary blowing equipment |
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