CN106591531B - A method of avoiding converter oxygen gun steel bonding slag - Google Patents
A method of avoiding converter oxygen gun steel bonding slag Download PDFInfo
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- CN106591531B CN106591531B CN201611129260.4A CN201611129260A CN106591531B CN 106591531 B CN106591531 B CN 106591531B CN 201611129260 A CN201611129260 A CN 201611129260A CN 106591531 B CN106591531 B CN 106591531B
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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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
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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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C5/4613—Refractory coated lances; Immersion lances
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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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C5/462—Means for handling, e.g. adjusting, changing, coupling
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A method of converter oxygen gun steel bonding slag is avoided, converter steel making method technical field is belonged to, for avoiding converter oxygen gun steel bonding slag.Its technical solution is：The present invention online two oxygen rifles when smelting with one heat steel are used alternatingly, a piece oxygen rifle is used for nitrogen flushing slag splashing, another oxygen rifle is used for oxygen furnace steel, for nitrogen flushing slag splashing oxygen rifle splash slag it is complete after carry rifle during wipe oxygen rifle dry slag off automatically using online slag scraper, spray the anti-sticking fireproof coating of oxygen rifle automatically using oxygen lance spray coating device during rifle under blowing for the oxygen rifle of oxygen furnace steel.The present invention breaches conventional oxygen rifle application method, nitrogen flushing slag splashing and oxygen furnace steel are served as respectively using online two oxygen rifles, it is played one's part to the full so that nitrogen flushing slag splashing oxygen rifle automatic scraping slag operation and oxygen furnace steel oxygen rifle spray anti-sticking fireproof coating operation automatically, thoroughly solve the problems, such as that oxygen rifle Slag Layer wraps up in mixed viscous influence rifle age and safety in production, life-span of oxygen lance is extended, converter producing efficiency is improved.
Description
Technical field
The present invention relates to a kind of methods avoiding converter oxygen gun steel bonding slag, belong to converter steel making method technical field.
Background technology
The converter oxygen gun lift-sliding mechanism in China at present, suspended on two oxygen rifles, the using and the reserved, and working position oxygen rifle was both used
To make steel and be used for slag splashing.In smelting process, in order to improve furnace life and reach good slag splashing effect, clinker is past
Make to have certain viscosity toward needs, therefore, during splashing slag, oxygen rifle outer layer pipe will inevitably adhere to sticky
Clinker, if taking no action in time remove dry slag, this root band dry slag oxygen rifle can wrap up one on dry slag layer again in steel-making
Steel bonding when layer blowing splash, with the increase of stove number, the slag in this root oxygen rifle as " snowball ", will it is more viscous more
Slightly, more more viscous more firm, at this moment avoid oxygen rifle can not pull out oxygen rifle mouth the only effective solution be exactly in advance replace oxygen rifle it is offline
Processing, but this can influence oxygen rifle rifle age and converter producing rhythm.And once clinkerization is bad, oxygen rifle replace slightly not in time, just
Oxygen rifle can be caused can not carry oxygen rifle mouth, solution at this moment can only be just to stop production to burn slag or burning torch processing, give production band
Carry out bigger loss.
At present the processing method of steel adhesion on oxygen lance slag have it is artificial burn slag processing, slag scraper cleaning, using oxygen lance with conical and
Use release coating.Artificial to burn slag processing, labor intensity is big, and working efficiency is low, and oxygen rifle occurs often and burns leakage, artificial burn is pounded
The accidents such as wound；Slag scraper cleaning is effective for the dry slag for removing slag splashing, but is to scrape not for the mixed viscous object of slag
Fall, and slag scraper occurs often and is dragged bad, the accidents such as oxygen rifle tight rope alarm by oxygen rifle；Using oxygen lance with conical, reduce artificial
The difficulty for handling steel adhesion on oxygen lance slag, after burning and cutting open the slag being wrapped in oxygen rifle, slag is easy to fall off from cone rifle, but for oxygen
It still can not be solved for the slag mixture of rifle wrapped multiple steel multilayer slag；Using release coating, isolation steel is played
The effect that slag is in direct contact with oxygen rifle ontology, before oxygen rifle does not have steel bonding slag, sprayed coating is for anti-block on oxygen rifle outer tube
Rifle slag is viscous dead to be cemented oxygen rifle outer tube and plays a role in improving, but for oxygen rifle slightly sticky point slag, spray paint is nothing
Method sprays on oxygen rifle outer tube.Therefore, up to the present, these methods cannot all reach the mesh for effectively removing steel adhesion on oxygen lance slag
, how effectively to remove steel adhesion on oxygen lance slag becomes the problem that puzzlement pneumatic steelmaking oxygen rifle uses, it would be highly desirable to which related technical staff gives
It solves.
Invention content
Technical problem to be solved by the invention is to provide a kind of methods avoiding converter oxygen gun steel bonding slag, and this method can
To avoid converter oxygen gun steel bonding slag, to fundamentally solve the problems, such as to be difficult to effectively to remove steel adhesion on oxygen lance slag.
Solving the technical solution of above-mentioned technical problem is：
A method of converter oxygen gun steel bonding slag being avoided, it is carried out using following steps：
A. after converter conjunction iron adds steel scrap to shake just, rifle is to point to be blown under upper limit for oxygen furnace steel oxygen rifle, lower rifle process at this
In, oxygen rifle Taper Pipe outer layer spraying 0.5mm-2mm thickness is prevented automatically using the oxygen lance spray coating device being installed on above oxygen rifle mouth
Viscous fireproof coating；
B. oxygen furnace steel oxygen rifle is descended to blow, after finishing blowing, by oxygen lance lifting bogie by oxygen furnace steel oxygen rifle from converter
It is interior to propose to oxygen rifle upper limit；
C. the converter tapping process time is utilized, is opened from rifle operation is moved, oxygen rifle horizontal direction transport positioning mechanism automatically opens, oxygen rifle
Transverse-moving trolley is by oxygen furnace steel oxygen rifle from traversing to the spare waiting position of oxygen rifle working position, while nitrogen flushing slag splashing oxygen rifle is from spare
Position is waited for be laterally moved to oxygen rifle working position in the same direction, rear detent mechanism automatically locks transverse-moving trolley in place；
D. after tapping end converter is shaken just, the slag scraper for being installed on oxygen rifle mouth is in the open state, nitrogen flushing slag splashing oxygen
Rifle then continues lower rifle and splashes slag to point to be blown under rifle, and point to be blown is put to after splashing slag, then nitrogen flushing slag splashing oxygen rifle from
It waiting blowing and a little be put to during upper limit, slag scraper scrapes slag according to program setting automatic wrapping nitrogen flushing slag splashing oxygen rifle outer tube,
Wipe the dry slag in nitrogen flushing slag splashing oxygen rifle off；
E. it utilizes converter to close iron and adds the steel scrap time, start negative direction from rifle operation is moved, oxygen rifle horizontal direction transport positioning mechanism is automatic
Open, oxygen rifle transverse-moving trolley by nitrogen flushing slag splashing oxygen rifle from traversing to the spare waiting position of oxygen rifle working position, while oxygen furnace steel
Oxygen rifle is laterally moved to oxygen rifle working position in the same direction from spare waiting position, and rear detent mechanism automatically locks transverse-moving trolley in place, so as to
To start the recycling that next heat makes steel the period；
The above-mentioned method for avoiding converter oxygen gun steel bonding slag, during two oxygen rifles are used alternatingly, two oxygen rifles can be with
It is used respectively as nitrogen flushing slag splashing oxygen rifle, and another simultaneously oxygen rifle then makes as oxygen furnace steel oxygen rifle with matching
With.
A kind of above-mentioned method avoiding converter oxygen gun steel bonding slag, during two oxygen rifles are used alternatingly, when oxygen blast is refined
When steel oxygen rifle has damage, nitrogen flushing slag splashing oxygen rifle can be used for oxygen furnace steel；When nitrogen flushing slag splashing oxygen rifle has damage, blow
Oxygen steel-making oxygen rifle can also be used to nitrogen flushing slag splashing.
The beneficial effects of the invention are as follows：
The present invention has broken conventional method, had not only been used for oxygen furnace steel for single oxygen rifle but also had been used for nitrogen flushing slag splashing
Shi Rongyi Slag Layers are wrapped up in mixed viscous and handle difficult present situation, serve as nitrogen flushing slag splashing respectively using online two oxygen rifles and blow
Oxygen is made steel so that nitrogen flushing slag splashing oxygen rifle automatic scraping slag operation and oxygen furnace steel oxygen rifle are sprayed anti-sticking fireproof coating and operated automatically
To play one's part to the full, under the premise of not influencing smelting cycle, successfully solve oxygen rifle Slag Layer wrap up in it is mixed viscous influence rifle age and
The problem of safety in production.
The present invention is the pioneering of pneumatic steelmaking, breaches conventional oxygen rifle application method, thoroughly solves oxygen rifle Slag Layer
Wrap up in the mixed viscous problem for influencing rifle age and safety in production.The present invention has fully excavated equipment potential, can effectively remove steel adhesion on oxygen lance
Slag reduces oxygen rifle replacement frequency, extends life-span of oxygen lance, reduces production non-cutting time, improves the ratio made steel automatically,
Converter producing efficiency is improved, the labor intensity and maintenance cost of oxygen rifle repair are reduced, reduces the safety of equipment and the person
Hidden danger has very high economic value.The present invention is easy to operate, is suitble to promote and apply in each iron and steel enterprise.
Description of the drawings
Fig. 1 is that position view is used alternatingly in the oxygen rifle of the present invention；
Fig. 2 is left oxygen rifle automatic scraping slag spraying operation relative position schematic diagram；
Fig. 3 is right oxygen rifle automatic scraping slag spraying operation relative position schematic diagram；
Fig. 4 is nitrogen flushing slag splashing Dreg Scraping Device of Oxygen Lance schematic diagram；
Fig. 5 is the vertical view of Fig. 4；
Fig. 6 is oxygen furnace steel oxygen lance spray coating schematic device.
It is marked in figure as follows：Left oxygen rifle transverse-moving trolley 1, right oxygen rifle transverse-moving trolley 2, oxygen lance lifting bogie 3, ground way 4,
Nitrogen flushing slag splashing oxygen rifle 5, spray paint device 6, slag scraper 7, oxygen rifle mouth 8, flue 9, converter 10, oxygen furnace steel oxygen rifle 11, spray
Mouth 12, endless tube 13, spray gun 14, walk spray paint sebific duct 15, spray paint outlet 16, spray paint batch can 17, charging manual ball valve 18,
Loading hopper 19, regulating valve 21, batch can air inlet pipe 22, exhaust manual ball valve 23, walks nitrogen sebific duct 24, scrapes Nitrogen source gases iron pipe 20
Knife 25, horn 26, cylinder 27, slag scraper pedestal 28,220V power supplys 29, pneumatic triple piece 30, compressed air gas source pipe 31, electromagnetism
Stokehold remote control cable 34,35, six points of power control cabinet 36, six points of iron pipe metal hose 37, left oxygen are removed in 32, six points of loose joints 33 of valve
The spare waiting position of the spare waiting position 38 of rifle transverse-moving trolley, oxygen rifle working position 39, right oxygen rifle transverse-moving trolley 40.
Specific implementation mode
The present invention is a kind of method avoiding converter oxygen gun steel bonding slag, and online two oxygen rifles alternately make when smelting with one heat steel
With an oxygen rifle is used for nitrogen flushing slag splashing, and another oxygen rifle is used for oxygen furnace steel, and nitrogen flushing slag splashing oxygen rifle is carrying after splashing slag
It is wiped off automatically using online slag scraper during rifle and adheres to crisp slag on oxygen rifle outer tube, after mentioning upper limit, clicked main control computer and draw
Face is from rifle button is moved, and online nitrogen flushing slag splashing oxygen rifle and spare oxygen furnace steel oxygen rifle are mobile in the same direction simultaneously, and online nitrogen flushing is splashed
The locking of slag furnace retaining oxygen rifle moves on to spare bit after opening, oxygen furnace steel oxygen rifle moves on to the lower rifle blowing of locking waiting automatically after working position,
Oxygen furnace steel oxygen rifle during lower rifle using on-line spray material device toward spraying release coating automatically on oxygen rifle outer tube, under smelting
When one heat steel, online two oxygen rifles still equally continue to be used alternatingly, and nitrogen flushing slag splashing oxygen rifle is specifically used to nitrogen flushing and splashes slag, blows
Oxygen steel-making oxygen rifle is specifically used to oxygen furnace steel.
The present invention is carried out using following steps：
A. after converter conjunction iron adds steel scrap to shake just, rifle is to point to be blown under upper limit for oxygen furnace steel oxygen rifle, lower rifle process at this
In, oxygen rifle Taper Pipe outer layer spraying 0.5mm-2mm thickness is prevented automatically using the oxygen lance spray coating device being installed on above oxygen rifle mouth
Viscous fireproof coating；
B. oxygen furnace steel oxygen rifle is descended to blow, after finishing blowing, by oxygen lance lifting bogie by oxygen furnace steel oxygen rifle from converter
It is interior to propose to oxygen rifle upper limit；
C. the converter tapping process time is utilized, is opened from rifle operation is moved, oxygen rifle horizontal direction transport positioning mechanism automatically opens, oxygen rifle
Transverse-moving trolley is by oxygen furnace steel oxygen rifle from traversing to the spare waiting position of oxygen rifle working position, while nitrogen flushing slag splashing oxygen rifle is from spare
Position is waited for be laterally moved to oxygen rifle working position in the same direction, rear detent mechanism automatically locks transverse-moving trolley in place；
D. after tapping end converter is shaken just, the slag scraper for being installed on oxygen rifle mouth is in the open state, nitrogen flushing slag splashing oxygen
Rifle then continues lower rifle and splashes slag to point to be blown under rifle, and point to be blown is put to after splashing slag, then nitrogen flushing slag splashing oxygen rifle from
It waiting blowing and a little be put to during upper limit, slag scraper scrapes slag according to program setting automatic wrapping nitrogen flushing slag splashing oxygen rifle outer tube,
Wipe the dry slag in nitrogen flushing slag splashing oxygen rifle off；
E. it utilizes converter to close iron and adds the steel scrap time, start negative direction from rifle operation is moved, oxygen rifle horizontal direction transport positioning mechanism is automatic
Open, oxygen rifle transverse-moving trolley by nitrogen flushing slag splashing oxygen rifle from traversing to the spare waiting position of oxygen rifle working position, while oxygen furnace steel
Oxygen rifle is laterally moved to oxygen rifle working position in the same direction from spare waiting position, and rear detent mechanism automatically locks transverse-moving trolley in place, so as to
To start the recycling that next heat makes steel the period；
It is specifically described below according to attached drawing：
Fig. 1 is shown, when the oxygen rifle on left oxygen rifle transverse-moving trolley 1 is used as nitrogen flushing slag splashing oxygen rifle 5, traversing of right oxygen rifle
Oxygen rifle on vehicle 2 functions as oxygen furnace steel oxygen rifle 11.When the nitrogen flushing slag splashing oxygen rifle 5 being fixed on oxygen lance lifting bogie 3 exists
Oxygen rifle working position 39 has splashed slag and has needed to be moved out to the spare waiting position 38 of left oxygen rifle transverse-moving trolley, and oxygen furnace steel oxygen rifle 11 is needed from the right side
When the spare shift-in of waiting position 40 of oxygen rifle transverse-moving trolley carries out oxygen furnace steel to oxygen rifle working position 39, clicks master control room computation and draw
Move rifle button certainly on face, left oxygen rifle transverse-moving trolley 1 and the left direction movement simultaneously of right oxygen rifle transverse-moving trolley 2, left oxygen rifle are horizontal
The locking of moving stage vehicle 1 moves left to the spare waiting position 38 of left oxygen rifle transverse-moving trolley after opening, and right oxygen rifle transverse-moving trolley 2 moves left to oxygen rifle work
Make position 39 with ground way 4 to being just locked afterwards.Conversely, oxygen rifle transverse-moving trolley moving direction is opposite.
Fig. 2 is shown, fixed after left oxygen rifle transverse-moving trolley 1 is moved to oxygen rifle working position 39 and ground way 4 to being just locked
Start lower rifle in the nitrogen flushing slag splashing oxygen rifle 5 on oxygen lance lifting bogie 3.During nitrogen flushing slag splashing 5 times rifles of oxygen rifle, successively
Across spray paint device 6 and it is installed on slag scraper 7 in the open state above oxygen rifle mouth 8, then is dropped through the entrance of flue 9
Nitrogen flushing slag splashing operation is carried out in converter 10.After splashing slag, outer tube is stained with the nitrogen flushing slag splashing oxygen rifle 5 of crisp slag by oxygen
Lance lifting bogie 3 is promoted.In uphill process, according to program setting, when 5 rifle position of nitrogen flushing slag splashing oxygen rifle is on oxygen rifle mouth 8
When six meters of surface, 7 automatic wrapping of slag scraper lives the crisp slag in 5 outer tube of nitrogen flushing slag splashing oxygen rifle, with nitrogen flushing slag splashing
The continuation of oxygen rifle 5 is promoted by oxygen lance lifting bogie 3, and the crisp slag being sticked in 5 outer tube of nitrogen flushing slag splashing oxygen rifle is just scraped by slag scraper 7
It falls into converter 10.
Fig. 3 is shown, fixed after right oxygen rifle transverse-moving trolley 2 is moved to oxygen rifle working position 39 and ground way 4 to being just locked
Start lower rifle in oxygen furnace steel oxygen rifle 11 on oxygen lance lifting bogie 3, when lower rifle opens spray paint device 6, oxygen furnace steel oxygen rifle 11
Outer tube will be sprayed-on the release coating that material device 6 sprays last layer 0.5mm-2mm thickness during lower rifle.Outer tube carries
The oxygen furnace steel oxygen rifle 11 of release coating sequentially pass through again be installed on the top of oxygen rifle mouth 8 slag scraper 7 in the open state and
Flue 9, which enters, carries out oxygen furnace steel operation in the converter 10 equipped with molten steel.After oxygen furnace steel, 11 outer layer of oxygen furnace steel oxygen rifle
It is red will to be stained with thin layer by oxygen lance lifting bogie 3 for the thin layer red steel that last layer long 1m to 2m, thick 1mm to 5mm will be glued on tube wall
The oxygen furnace steel oxygen rifle 11 of steel, which is promoted, arrives the upper limit, then by moving rifle operation certainly, will be stained with the oxygen furnace steel oxygen rifle of thin layer red steel
11, which are moved out to the spare waiting position of right oxygen rifle transverse-moving trolley 40, is cooled down.
Fig. 4,5 displays, horn 26 and cylinder 27 are connected and fixed on slag scraper pedestal 28,220V power supplys 29 and go to stokehold remote
Process control cable 34 accesses power control cabinet 35, and for controlling solenoid valve 32, compressed air gas source pipe 31 passes through pneumatic triple piece 30, electricity
32, six points of magnet valve, 33, six points of loose joint iron pipe 36 and six points of metal hoses 37 are connected to cylinder 27.According to program setting, work as nitrogen flushing
When slag splashing oxygen rifle 5 is thus lifted to rifle position apart from six meters of 8 upper surface of oxygen rifle mouth, solenoid valve 32 controls the machine being connect with cylinder 27
Arm 26 acts, and the scraper 25 being installed on horn 26 will embrace the nitrogen flushing slag splashing oxygen rifle 5 with dry slag, when with viscous
When the nitrogen flushing slag splashing oxygen rifle 5 of slag continues to be elevated, slag scraper 7 will wipe dry slag off into converter 10.
Fig. 6 shows that Nitrogen source gases are entered by Nitrogen source gases iron pipe 20 and batch can air inlet pipe 22 in spray paint batch can 17, nitrogen
Gas air source is by Nitrogen source gases iron pipe 20 and walks nitrogen sebific duct 24 and is connected to 14 rear end tails of spray gun, and nitrogen adjustment valve 21 is installed on
On Nitrogen source gases iron pipe 20, opens charging manual ball valve 18 and exhaust manual ball valve 23, the spray paint modulated pass through loading hopper
19 are added into spray paint batch can 17, and after spray paint is filled it up with, charging manual ball valve 18 and exhaust manual ball valve 23 are closed, and are sprayed
Coating is by spray paint outlet 16 and walks spray paint sebific duct 15 and is connected to 14 rear end side of spray gun, and nozzle 12 is connected by endless tube 13
It is connected to 14 front end of spray gun.When oxygen furnace steel oxygen rifle 11 declines, nitrogen adjustment valve 21, the spray paint in spray paint batch can 17 are opened
By spray paint outlet 16 and spray paint sebific duct 15 will be walked entered by the part nitrogen blow pressure that enters from batch can air inlet pipe 22
Into spray gun 14, the spray paint in spray gun 14 will be entered endless tube 13 by the part nitrogen blow pressure in nitrogen sebific duct 24
It is interior, the outer tube for being sprayed at oxygen furnace steel oxygen rifle 11 will be blowed by nozzle 12 into the spray form spray paint in endless tube 13
On.
After Hebei steel enterprise Cheng Gang companies apply the method for the present invention, steel adhesion on oxygen lance slag accident is zero, has taken leave of artificial burning
Rifle high intensity dangerous operation continues to be described further below by 120 tons of converter embodiments to the present invention.
Embodiment：
The blowing of oxygen furnace steel oxygen rifle 11 finishes, when slugging is good, oxygen rifle almost non-stick steel, when molten iron or half steel condition are bad
When, a thin layer slag mixture would generally be glued on oxygen rifle outer tube, thick 1mm to 5mm, long 1m are to 2m, if this root glues thin layer slag
Oxygen furnace steel oxygen rifle 11 continue for nitrogen flushing slag splashing, then on thin layer slag again can wrapping layer to be stained with 10mm to 30mm thick
Clinker, this slag mixture is difficult Automatic-falling in next heat oxygen furnace steel, but also be will continue in slag mixture
On again glue wrap up in one layer of thin slag, same root oxygen rifle constantly recycles, and the more viscous slag mixture then can be the longer, more more viscous thicker, refining
To after the 5th stove steel, oxygen rifle just can not pull out oxygen rifle mouth, processing of being forced to stop production.
When the oxygen furnace steel oxygen rifle 11 of viscous 1mm to 5mm thin layer slags is not used to nitrogen flushing slag splashing, but carry rifle remove it is cold
But next heat is waited for continue oxygen furnace steel, when splashing slag operation with another nitrogen flushing slag splashing oxygen rifle 5, nitrogen flushing slag splashing oxygen
Rifle 5, which splashes slag, to be terminated to propose outside stove, and the red slag of one layer of 10mm to 30mm thickness, this red slag, without steel bonding, group can be glued on gun body outer tube
Knit more open, hardness is high, and brittleness is big, easily falls off in natural cooling or extruding, is closed and scrapes during carrying rifle
Slag device 7 can fall this crisp slag scraped clean in stove.After oxygen furnace steel oxygen rifle 11 is moved automatically into, a upper heat is stained with thin layer of steel
The oxygen furnace steel oxygen rifle 11 of slag thin layer slag and is sprayed with anti-sticking fireproof coating after 5-7 minutes natural coolings are shunk
The caking property of gun body outer tube further decreases, and when rifle continues oxygen furnace steel under next heat, thin layer slag will rise in steel-making
It is generated during temperature and thermally expands and automatically disengage oxygen rifle outer tube and fall into stove.
Claims (3)
1. a kind of method avoiding converter oxygen gun steel bonding slag, it is characterised in that：It is carried out using following steps：
A. converter（10）After conjunction iron adds steel scrap to shake just, oxygen furnace steel oxygen rifle（11）Rifle is to point to be blown under upper limit, lower rifle at this
In the process, using being installed on oxygen rifle mouth（8）The oxygen lance spray coating device of top（6）Automatically 0.5mm- is sprayed to oxygen rifle Taper Pipe outer layer
The anti-sticking fireproof coating of 2mm thickness；
B. oxygen furnace steel oxygen rifle is descended（11）It blows, after finishing blowing, passes through oxygen lance lifting bogie（3）By oxygen furnace steel oxygen rifle（11）
From converter（10）It is interior to propose to oxygen rifle upper limit；
C. converter is utilized（10）The tapping process time opens from rifle operation is moved, and oxygen rifle horizontal direction transport positioning mechanism automatically opens, right oxygen
Rifle transverse-moving trolley（2）By oxygen furnace steel oxygen rifle（11）From oxygen rifle working position（39）Traversing to the right spare waiting position of oxygen rifle transverse-moving trolley
（40）, while nitrogen flushing slag splashing oxygen rifle（5）From the spare waiting position of left oxygen rifle transverse-moving trolley（38）It is laterally moved to oxygen rifle work in the same direction
Position（39）, detent mechanism automatically locks transverse-moving trolley afterwards in place；
D. tapping terminates converter（10）After shaking just, it is installed on oxygen rifle mouth（8）The slag scraper of top（7）It is in the open state, nitrogen flushing
Slag splashing oxygen rifle（5）Lower rifle then continues lower rifle and splashes slag to point to be blown, and point to be blown is put to after splashing slag, then oxygen rifle
During waiting blowing and being a little put to upper limit, slag scraper（7）According to program setting automatic wrapping nitrogen flushing slag splashing oxygen rifle（5）Outside
Pipe scrapes slag, wipes nitrogen flushing slag splashing oxygen rifle off（5）On dry slag；
E. converter is utilized（10）It closes iron and adds the steel scrap time, start negative direction from rifle operation is moved, oxygen rifle horizontal direction transport positioning mechanism is automatic
It opens, left oxygen rifle transverse-moving trolley（1）By nitrogen flushing slag splashing oxygen rifle（5）From oxygen rifle working position（39）Traversing of traversing to left oxygen rifle
The spare waiting position of vehicle（38）, while oxygen furnace steel oxygen rifle（11）From the spare waiting position of right oxygen rifle transverse-moving trolley（40）It is laterally moved in the same direction
Oxygen rifle working position（39）, detent mechanism automatically locks transverse-moving trolley afterwards in place, so as to start next heat steel-making week
The recycling of phase.
2. the method according to claim 1 for avoiding converter oxygen gun steel bonding slag, it is characterised in that：Alternately make in two oxygen rifles
With in the process, two oxygen rifles can be respectively as nitrogen flushing slag splashing oxygen rifle（5）It uses, and another simultaneously oxygen rifle then conduct
Oxygen furnace steel oxygen rifle with matching（11）It uses.
3. the method according to claim 2 for avoiding converter oxygen gun steel bonding slag, it is characterised in that：Alternately make in two oxygen rifles
With in the process, when oxygen furnace steel oxygen rifle（11）When having damage, nitrogen flushing slag splashing oxygen rifle（5）It can be used for oxygen furnace steel；When blowing
Nitrogen slag splashing oxygen rifle（5）When having damage, oxygen furnace steel oxygen rifle（11）It can also be used to nitrogen flushing slag splashing.
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| CN201611129260.4A CN106591531B (en) | 2016-12-09 | 2016-12-09 | A method of avoiding converter oxygen gun steel bonding slag |
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| CN107604125A (en) * | 2017-10-19 | 2018-01-19 | 四川企拓新材料有限公司 | A kind of converter oxygen gun takes off slag device |
| CN108588312B (en) * | 2018-04-23 | 2019-11-26 | 山西太钢不锈钢股份有限公司 | A method of processing blast furnace spray gun slagging |
| CN111154931A (en) * | 2019-12-26 | 2020-05-15 | 河钢股份有限公司承德分公司 | Vanadium-containing molten iron slag pan anti-sticking agent and slag sticking prevention method |
| CN115323104B (en) * | 2022-07-23 | 2024-03-19 | 阳春新钢铁有限责任公司 | Automatic slag splashing furnace protection method for converter |
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| CN2542677Y (en) * | 2002-02-22 | 2003-04-02 | 中冶集团重庆钢铁设计研究总院 | Double-balanced oxygen lance |
| CN100463976C (en) * | 2006-12-28 | 2009-02-25 | 鞍钢股份有限公司 | Processing method of combined blowing from top and bottom for maintaining converter and removing cohered steel slag |
| CN101445678B (en) * | 2008-12-30 | 2011-07-06 | 沈阳东北大学冶金技术研究所有限公司 | Nonstick coating used on oxygen lance of steelmaking converter |
| CN202107725U (en) * | 2011-06-13 | 2012-01-11 | 中冶京诚工程技术有限公司 | Self-adaptive oxygen lance quick replacing device |
| CN105039640A (en) * | 2015-09-17 | 2015-11-11 | 山东钢铁股份有限公司 | Double oxygen lance linkage fast automatic replacing system |
| CN105220102B (en) * | 2015-10-23 | 2018-01-02 | 辽宁科技大学 | It is a kind of to extend the method in oxygen gun sprayer life-span by reducing oxygen gun sprayer dry slag |
| CN105506217A (en) * | 2016-01-22 | 2016-04-20 | 河北钢铁股份有限公司邯郸分公司 | Method for online rapid cleaning of converter lance bonded steel slag |
| CN205368420U (en) * | 2016-02-26 | 2016-07-06 | 河北钢铁股份有限公司承德分公司 | Oxygen rifle travelling platform detent |
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2016
- 2016-12-09 CN CN201611129260.4A patent/CN106591531B/en active Active
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