CN110042187A - When converter tapping clinker dust modification and slag steel separation device and application method - Google Patents
When converter tapping clinker dust modification and slag steel separation device and application method Download PDFInfo
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- CN110042187A CN110042187A CN201910460167.9A CN201910460167A CN110042187A CN 110042187 A CN110042187 A CN 110042187A CN 201910460167 A CN201910460167 A CN 201910460167A CN 110042187 A CN110042187 A CN 110042187A
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- Prior art keywords
- slag
- clinker
- dusts
- converter
- pipeline
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- 239000002893 slag Substances 0.000 title claims abstract description 106
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 69
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 62
- 239000010959 steel Substances 0.000 title claims abstract description 62
- 239000000428 dust Substances 0.000 title claims abstract description 48
- 230000004048 modification Effects 0.000 title claims abstract description 38
- 238000012986 modification Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000000926 separation method Methods 0.000 title claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000011819 refractory material Substances 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims abstract description 3
- 238000010410 dusting Methods 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 4
- 230000003749 cleanliness Effects 0.000 abstract description 3
- 230000008719 thickening Effects 0.000 abstract description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 12
- 239000000395 magnesium oxide Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010067482 No adverse event Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C21C5/36—Processes yielding slags of special composition
-
- 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
-
- 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
- C21C7/072—Treatment with gases
-
- 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
- C21C7/076—Use of slags or fluxes as treating agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Clinker dusts the device and application method of modification and the separation of slag steel when converter tapping, and pneumatically the dust gun body of pushing off the slag rifle of multichannel is formed by refractory material casting, and You Sangen steel pipe is used as gas passage, and nozzle is using Lavalle form.The rear end of pipeline that dusts connects nitrogen main pipeline and rotary feeder, and two gassing pipes separate slag steel to nitrogen-blow above tapping hole.In tapping process, pushing off the slag rifle that multichannel is pneumatically dusted protrudes into converter and pipette tips is made to be directed at tapping hole, sprays slag modification agent by the pipeline that dusts and dust after modification to clinker；Form high-speed flow by dust pipeline and gassing pipe and push clinker open and forms one rigidity " pit " above tapping hole, at the end of tapping quickly withdrawal dust pushing off the slag rifle, shake positive converter.The present invention modifies clinker in tapping process in advance, and thickening clinker reduces foamed slag, pushes clinker above tapping hole open using high-speed flow, clinker is prevented to be involved in molten steel vortex, reduces the lower quantity of slag, improves Molten Steel Cleanliness.
Description
Technical field
The invention belongs to metallurgy industry steelmaking technical fields, and in particular to slag modification and slag steel point when to converter tapping
From, when converter tapping is especially utilized clinker dust modification and slag steel separation device and application method.
Background technique
Can generate a large amount of molten state steel slags in convertor steelmaking process, complex chemical composition, mainly contain such as CaO,
MgO、FeO、SiO2、P2O5With oxides and the partial vulcanization object such as MnO.It is existing that slag can occur in the middle and later periods of converter tapping process
As the reason is that being gradually decreased as tapping carries out molten steel amount in furnace, when molten steel depth is lower than a certain critical value, on tapping hole
There is funnelform conflux vortex in side, and part steel slag will be involved in molten steel vortex before tapping is not finished and enter ladle under furnace.Steel
Slag is mixed into ladle, will lead to the impurity elements such as S, P, O in steel and inclusion content increases, be unfavorable for the following process of molten steel,
Endanger the end properties of steel.So solving the problems, such as the slag of converter tapping, it just can be reduced phosphorus in molten steel, sulphur and oxide and be mingled with
Content, improve the degree of purity of molten steel, reduce deoxidier consumption in next procedure and improve yield of alloy, finally reduce ton
Steel the production cost increases income.
As the requirement to converter molten steel quality is continuously improved, steel mill, various countries develops a variety of Slag Retaining Process technologies, comprising:
It cuts slag pan method, pushing off the slag lid method, slide gate nozzle method, floating plug method, pushing off the slag ball, pushing off the slag tank pushing off the slag method, pneumatic dreg blocking method, be siphoned off
Steel method etc..But there was only the comparison of pneumatic dreg blocking, skimming ball, floating plug and slide gate nozzle pushing off the slag steel mill's application at home and abroad now
Extensively.Wherein, pneumatic dreg blocking is the nitrogen-blow out of tapping hole extroversion furnace, and clinker is blown open, and pushing off the slag effect is preferable, but air-flow
Ecto-entad is blown into, and inverse molten steel is flowed to and gone, and impact is larger, and splash is also larger, is easy scaling loss furnace external equipment；Skimming ball or pushing off the slag
Plug is to utilize characteristic of its specific gravity between slag steel, blocks tapping hole when tapping will be complete to block slag to flow into ladle, but
Being it judges its timing input by visually observing, and not can avoid slag liquid and be mixed into ladle cannot guarantee that and be very put into tapping
Mouthful；Slide gate nozzle pushing off the slag is the sliding valve plate that refractory material manufacture is installed outside converter taphole, by operating system with machinery
Or the mode of hydraulic control opens or closes tapping hole, pushing off the slag effect is preferable, but higher cost, while its installing and dismounting and dimension
Shield maintenance is inconvenient, and is easy to be influenced by molten steel splash during blowing.In addition, these methods exist just with physical means
Slag is prevented at tapping hole, in view of carrying out modifying process to clinker using the principles of chemistry, change the chemical property of clinker with
Physical characteristic, including basicity, viscosity etc..
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides clinker when a kind of converter tapping dust modification and slag steel separation
Device and application method comprehensively utilize the principles of chemistry and physical means, clinker are modified and blown in converter tapping process
Gas pushing off the slag reduces foamed slag and thickening clinker, prevents clinker from being involved in molten steel vortex, improves Molten Steel Cleanliness, drops low alloy-consumption
Amount promotes steelmaking complex economic benefit.
A kind of clinker in converter tapping dusts the device of modification and the separation of slag steel, including multichannel pneumatically dusts pushing off the slag
Rifle, the multichannel pushing off the slag rifle that pneumatically dusts are made of gun body and gas passage, and the gun body cross section is circle, by fire proofed wood
Material is poured, using three steel pipes as gas passage among gun body, including dust pipeline and two gassing pipes, and three
It is distributed in a triangle；The multichannel pushing off the slag rifle that pneumatically dusts is mounted on the support of railcar, can be moved forward and backward with railcar,
Railcar is mounted on furnace rear platform upper surface；It is described to dust pipeline and the import of gassing pipe rear end passes through hose and main nitrogen tube
Road is connected, and the front end nozzle of dust pipeline and gassing pipe is all made of Lavalle form；Dust rear end of pipeline feed inlet it is logical
It crosses rotary feeder and connects high hopper with pipeline, for providing slag modification agent.
The diameter of the pipeline that dusts is 30-35mm, and the gassing pipe diameter is 25-30mm.
The slag modification agent uses magnesian gunning refractory, and main component is MgO, and content of MgO is greater than 75%, and magnesia spray repair
Expect additional amount control in 20-30kg/min.
The pipeline that dusts is connected with the hose of gassing pipe rear end with main nitrogen pipeline by control valve.
A kind of clinker in converter tapping dust modification and slag steel separation device, further include converter, converter is located at
The multichannel pushing off the slag rifle that pneumatically dusts exports positive opposite side, and converter pneumatically dust close to multichannel pushing off the slag rifle one end side wall on be arranged
There is tapping hole, tapping hole is located at the junction of converter sloped sidewall and upright side walls.
A kind of clinker in converter tapping dust modification and the separation of slag steel device application method, using one kind in converter
When tapping clinker dust modification and slag steel separation device, comprising the following steps:
Step 1, when needing to tap, converter is fascinated 90-95 ° to furnace rear platform direction, makes fire door in face of sample platform after furnace
Setting, while operating railcar and being sent into the pipette tips for the pushing off the slag rifle that dusts in converter by fire door to the movement of converter one end, and adjusting
It dusts above the pipette tips alignment tapping hole of pushing off the slag rifle, the pipeline that dusts for the pushing off the slag rifle that pneumatically dusted using multichannel sprays clinker
Powder modification；As molten steel amount residue 50-60% in furnace, the control valve that the pipeline that dusts connects main nitrogen pipeline is first opened, is passed through
After control valve adjusts the nitrogen flow for the pipeline that dusts, then the switch of rotary feeder is opened, using high speed nitrogen as carrier
Slag modification agent is blowed into clinker, until clinker is thickened, closing rotary feeder terminates after dusting, and the pipeline that dusts still is passed through nitrogen
Gas, and the control valve of two gassing pipes is opened, after the total gas flow rate for adjusting dust pipeline and gassing pipe, utilize height
Clinker above tapping hole is pushed open and forms a rigidity " pit " by fast air-flow, and the nitrogen constantly blown out can prevent clinker from flowing back
Above to tapping hole；After tapping, operation railcar multichannel pneumatically dusts pushing off the slag rifle withdraws from converter, when multichannel is pneumatic
When the pipette tips of pushing off the slag rifle of dusting leave the fire door of converter, positive converter is shaken immediately, so far converter tapping process terminates.
" pit " diameter of rigidity described in step 1 is 500-800mm；The nitrogen flow of the pipeline that dusts is 300-
500Nm3/h；The total gas flow rate of dust pipeline and the gassing pipe is 900-1200Nm3/h。
The invention has the benefit that
In converter tapping process using novel multi-channel provided by the invention it is pneumatic dust pushing off the slag rifle in tapping to
Clinker is blown magnesian gunning refractory, can reduce the generation of foamed slag, improve molten steel viscosity, effectively clinker be prevented to be mixed into molten steel,
The time for shortening slag splashing can also be modified in advance；Molten steel face above tapping hole is blown high speed stream of nitrogen gas, can be complete
It blows clinker open, forms a rigidity " pit " without slag, " pit " can inhibit molten steel vortex to be formed above tapping hole, high speed gas
Body and the collective effect of clinker thickening can prevent clinker from flowing back into tapping hole.
Additionally due to the pushing off the slag rifle that dusts of multichannel pneumatically is to be blown on molten steel in the stove surface, therefore impact smaller, splash
Also not serious, it has no adverse effects, and gun body is mainly manufactured by refractory material, cost is relatively low, also avoids water cooling injection tube because quick-fried
Pipe or leak generate explosion accident.The present invention achieves the desired results in summary, slag modification and to be blown into nitrogen pushing off the slag effect good
Good, thoroughly, thickness of slag layer significantly reduces the separation of slag steel in ladle, and Molten Steel Cleanliness significantly improves, deoxidier and alloy consumption
Reduce, ton steel cost reduce, steel-making benefit is evident promoted.
Detailed description of the invention
Fig. 1 is that new device provided by the invention applies the on-the-spot schematic in converter tapping；
Fig. 2 is that novel multi-channel provided by the invention pneumatically dusts the structural schematic diagram of pushing off the slag rifle；
1, converter, 2, multichannel pneumatically dust pushing off the slag rifle, 3, tapping hole, 4, railcar, 5, fire door, 6, furnace rear platform, 7,
Gun body, 8, dust pipeline, 9, gassing pipe, 10, control valve, 11, main nitrogen pipeline.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiment 1
As depicted in figs. 1 and 2, a kind of clinker in converter tapping dusts the device of modification and the separation of slag steel, including multi-pass
Pneumatically dust pushing off the slag rifle 2 in road, and the multichannel pushing off the slag rifle 2 that pneumatically dusts is made of gun body 7 and gas passage, 7 cross section of gun body
It for circle, is formed by refractory material casting, is 35mm's including a diameter using three steel pipes as gas passage among gun body 7
Gassing pipe 9 that pipeline 8 and two diameters are 30mm dust as gas passage, and dust pipeline 8 and two gassing pipes 9 at
Isosceles triangle distribution；The multichannel pushing off the slag rifle 2 that pneumatically dusts is mounted on the support of railcar 4, can be with moving before and after railcar 4
Dynamic, railcar 4 is mounted on 6 upper surface of furnace rear platform；It is described dust pipeline 8 and 9 rear end import of gassing pipe pass through hose with
Main nitrogen pipeline 11 is connected, and the pipeline 8 that dusts passes through 10 phase of control valve with the hose of 9 rear end of gassing pipe and main nitrogen pipeline 11
Even, and the front end nozzle of dust pipeline 8 and gassing pipe 9 is all made of Lavalle form, improves gas vent flow velocity；Dust pipeline
The feed inlet of 8 rear ends connects high hopper with pipeline by rotary feeder, for providing slag modification agent, the slag modification
Agent uses magnesian gunning refractory, and main component is MgO, and content of MgO is greater than 75%, and the control of magnesian gunning refractory additional amount is in 20-
30kg/min, when there is overflowing slag phenomenon early period of tapping, the modification that can dust reduces foamed slag；It needs in the tapping middle and later periods to furnace
Slag dusts modification, is thickened clinker, can stop dusting after being suitable for blowing pushing off the slag until clinker viscosity；Described one kind goes out in converter
Clinker dusts the device of modification and the separation of slag steel when steel, further includes converter 1, and converter 1 is located at the multichannel pushing off the slag rifle 2 that pneumatically dusts and goes out
Mouthful positive opposite side, and converter 1 pneumatically dust close to multichannel 2 one end of pushing off the slag rifle side wall on be provided with tapping hole 3, tapping hole 3
In the junction of converter 1 sloped sidewall and upright side walls.
A kind of clinker in converter tapping dust modification and the separation of slag steel device application method, using one kind in converter
When tapping clinker dust modification and slag steel separation device, comprising the following steps:
Step 1, when needing to tap, converter 1 is fascinated 90-95 ° to 6 direction of furnace rear platform, makes fire door 5 in face of product after furnace
Platform 6 is arranged, while operating railcar 4 to the movement of 1 one end of converter, and the pipette tips for pushing off the slag rifle 2 that multichannel is pneumatically dusted pass through fire door 5
It is sent into converter 1, and adjusts spray multichannel and pneumatically dust pipette tips alignment tapping hole 3 top of pushing off the slag rifle 2, it is pneumatic using multichannel
The pipeline 8 that dusts of pushing off the slag rifle 2 of dusting carries out modification of dusting to clinker；As molten steel amount residue 50-60% in furnace, first opens and dust
Pipeline 8 connects the control valve 10 of main nitrogen pipeline 11, is in by make the to dust nitrogen flow of pipeline 8 of control valve 10
300Nm3In/h, then the switch of rotary feeder is opened, controls the additional amount of slag modification agent in 25kg/min, utilize high speed nitrogen
Slag modification agent is blowed to clinker as carrier by gas, until clinker is thickened, closing rotary feeder terminates after dusting, and dust pipeline 8
Still it is passed through nitrogen, and opens the control valve 10 of two gassing pipes 9, controls dust pipeline 8 and two gas blow pipes
The total gas flow rate in road 9 is in 900Nm3The clinker of 3 top of tapping hole is pushed open using high-speed flow and forms a diameter by/h
The rigidity " pit " of 600mm, the nitrogen constantly blown out can prevent clinker from flowing back into 3 top of tapping hole；After tapping, rail is operated
Multichannel pneumatically the dusts pushing off the slag rifle 2 of road vehicle 4 withdraws from converter 1, when pneumatically the dust pipette tips of pushing off the slag rifle 2 of multichannel leave converter 1
Fire door 5 when, shake positive converter 1 immediately, 1 tapping process of so far converter terminates.
Claims (7)
1. when a kind of converter tapping clinker dust modification and slag steel separation device, which is characterized in that pneumatically sprayed including multichannel
Powder pushing off the slag rifle, the multichannel pushing off the slag rifle that pneumatically dusts are made of gun body and gas passage, and the gun body cross section is circle, by
Refractory material casting forms, using three steel pipes as gas passage among gun body, including dust pipeline and two gassing pipes,
And three is distributed in a triangle；The multichannel pushing off the slag rifle that pneumatically dusts is mounted on the support of railcar, can be with railcar before
After move, railcar is mounted on furnace rear platform upper surface；It is described dust pipeline and the import of gassing pipe rear end pass through hose with
Main nitrogen pipeline is connected, and the front end nozzle of dust pipeline and gassing pipe is all made of Lavalle form；Dust rear end of pipeline
Feed inlet connects high hopper with pipeline by rotary feeder, for providing slag modification agent.
2. clinker dusts the device of modification and the separation of slag steel when a kind of converter tapping according to claim 1, feature exists
In: the diameter of the pipeline that dusts is 30-35mm, and the gassing pipe diameter is 25-30mm.
3. clinker dusts the device of modification and the separation of slag steel when a kind of converter tapping according to claim 1, feature exists
In: the slag modification agent uses magnesian gunning refractory, and main component is MgO, and content of MgO is greater than 75%, and magnesian gunning refractory adds
Enter amount control in 20-30kg/min.
4. clinker dusts the device of modification and the separation of slag steel when a kind of converter tapping according to claim 1, feature exists
In: the pipeline that dusts is connected with the hose of gassing pipe rear end with main nitrogen pipeline by control valve.
5. clinker dusts the device of modification and the separation of slag steel when a kind of converter tapping according to claim 1, feature exists
It further include converter in the device, converter is located at the multichannel pushing off the slag rifle that pneumatically dusts and exports positive opposite side, and converter is close to multichannel
It is provided with tapping hole on the side wall of pneumatic pushing off the slag rifle one end of dusting, tapping hole is located at the connection of converter sloped sidewall and upright side walls
Place.
6. clinker dusts the application method of modification and slag steel separator when a kind of converter tapping, use is described in claim 1
When a kind of converter tapping clinker dust modification and slag steel separation device, which comprises the following steps:
Step 1, when needing to tap, converter is fascinated 90-95 ° to furnace rear platform direction, fire door is set in face of sample platform after furnace,
It is mobile to converter one end that railcar is operated simultaneously, the pipette tips for the pushing off the slag rifle that dusts is sent into converter by fire door, and adjust and dust
Above the pipette tips alignment tapping hole of pushing off the slag rifle, the pipeline that dusts for the pushing off the slag rifle that pneumatically dusted using multichannel dust changing to clinker
Matter；As molten steel amount residue 50-60% in furnace, the control valve that the pipeline that dusts connects main nitrogen pipeline is first opened, adjusting is passed through
Valve regulated dust pipeline nitrogen flow after, then open the switch of rotary feeder, using high speed nitrogen as carrier by furnace
Slag modifier blows to clinker, until clinker is thickened, closing rotary feeder terminates after dusting, and the pipeline that dusts still is passed through nitrogen, and
And the control valve of two gassing pipes is opened, after the total gas flow rate for adjusting dust pipeline and gassing pipe, utilize high speed gas
Clinker above tapping hole is pushed open and forms a rigidity " pit " by stream, and the nitrogen constantly blown out can prevent clinker from flowing back into out
Above steel mouth；After tapping, operation railcar multichannel pneumatically dusts pushing off the slag rifle withdraws from converter, when multichannel pneumatically dusts
When the pipette tips of pushing off the slag rifle leave the fire door of converter, positive converter is shaken immediately, so far converter tapping process terminates.
7. clinker dusts the application method of modification and slag steel separator when a kind of converter tapping according to claim 6,
It is characterized by: " pit " diameter of rigidity described in step 1 is 500-800mm；The nitrogen flow of the pipeline that dusts is 300-
500Nm3/h；The total gas flow rate of dust pipeline and the gassing pipe is 900-1200 Nm3/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460167.9A CN110042187B (en) | 2019-05-30 | 2019-05-30 | Device for modifying slag powder spraying and separating slag steel during converter tapping and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460167.9A CN110042187B (en) | 2019-05-30 | 2019-05-30 | Device for modifying slag powder spraying and separating slag steel during converter tapping and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110042187A true CN110042187A (en) | 2019-07-23 |
| CN110042187B CN110042187B (en) | 2024-05-28 |
Family
ID=67284121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910460167.9A Active CN110042187B (en) | 2019-05-30 | 2019-05-30 | Device for modifying slag powder spraying and separating slag steel during converter tapping and use method |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112226576A (en) * | 2020-09-27 | 2021-01-15 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and method for carbon spraying deoxidation by using slag stopping system |
| CN113832286A (en) * | 2021-09-17 | 2021-12-24 | 东北大学 | Device and method for powder injection dephosphorization and slag blocking at converter steel tapping hole and composite dephosphorization agent |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176212A (en) * | 1996-12-18 | 1998-06-30 | Sumitomo Metal Ind Ltd | Method for preventing flow-out of slag at the time of discharging molten steel |
| KR20010065418A (en) * | 1999-12-29 | 2001-07-11 | 이구택 | Lance for powder blasting at high speed |
| CN101880751A (en) * | 2009-05-07 | 2010-11-10 | 营口东邦冶金设备耐材有限公司 | Composite desulfurization/dephosphorization spray gun for molten iron |
| CN201969631U (en) * | 2011-02-28 | 2011-09-14 | 攀钢集团钢铁钒钛股份有限公司 | Spray gun |
| CN102978341A (en) * | 2012-12-24 | 2013-03-20 | 营口戴斯玛克科技发展有限公司 | Desulfuration spray gun for molten iron refining |
| CN104263877A (en) * | 2014-10-14 | 2015-01-07 | 钢铁研究总院 | Powder spraying and blowing combined spray gun for treating molten iron with medium and high phosphorus content in converter as well as application method |
| CN104759613A (en) * | 2015-04-15 | 2015-07-08 | 中冶南方工程技术有限公司 | Molten iron tank slag removal system and method |
| WO2015102190A1 (en) * | 2013-12-30 | 2015-07-09 | 주식회사 우진 | Gas injection lance having rotating injecting nozzle, and slag outflow preventing device equipped with same |
| CN105624358A (en) * | 2016-01-12 | 2016-06-01 | 中冶赛迪上海工程技术有限公司 | Method for producing low-phosphorous steel by single converter and double oxygen lances |
| CN105714013A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Control method for vortex slag entrapment during converter tapping |
| CN106048136A (en) * | 2016-07-27 | 2016-10-26 | 北京科技大学 | Online steelmaking tapping process powder injection deoxidizing method and system |
| JP3213241U (en) * | 2017-08-16 | 2017-10-26 | 唐山正豊鋼鉄有限公司 | Out-of-furnace molten steel dephosphorization system |
| CN109136455A (en) * | 2018-10-15 | 2019-01-04 | 马鞍山钢铁股份有限公司 | A method of it bessemerizing terminal slag bubble and quickly eliminates |
| CN109306392A (en) * | 2017-07-27 | 2019-02-05 | 佟萌 | A kind of use for refining molten steel air-flow dusts element with spray formula Ladle Bottom |
| CN209974818U (en) * | 2019-05-30 | 2020-01-21 | 无锡东大汉森冶金实业有限公司 | Device for modifying slag powder spraying and separating slag and steel during converter tapping |
-
2019
- 2019-05-30 CN CN201910460167.9A patent/CN110042187B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176212A (en) * | 1996-12-18 | 1998-06-30 | Sumitomo Metal Ind Ltd | Method for preventing flow-out of slag at the time of discharging molten steel |
| KR20010065418A (en) * | 1999-12-29 | 2001-07-11 | 이구택 | Lance for powder blasting at high speed |
| CN101880751A (en) * | 2009-05-07 | 2010-11-10 | 营口东邦冶金设备耐材有限公司 | Composite desulfurization/dephosphorization spray gun for molten iron |
| CN201969631U (en) * | 2011-02-28 | 2011-09-14 | 攀钢集团钢铁钒钛股份有限公司 | Spray gun |
| CN102978341A (en) * | 2012-12-24 | 2013-03-20 | 营口戴斯玛克科技发展有限公司 | Desulfuration spray gun for molten iron refining |
| WO2015102190A1 (en) * | 2013-12-30 | 2015-07-09 | 주식회사 우진 | Gas injection lance having rotating injecting nozzle, and slag outflow preventing device equipped with same |
| CN104263877A (en) * | 2014-10-14 | 2015-01-07 | 钢铁研究总院 | Powder spraying and blowing combined spray gun for treating molten iron with medium and high phosphorus content in converter as well as application method |
| CN105714013A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Control method for vortex slag entrapment during converter tapping |
| CN104759613A (en) * | 2015-04-15 | 2015-07-08 | 中冶南方工程技术有限公司 | Molten iron tank slag removal system and method |
| CN105624358A (en) * | 2016-01-12 | 2016-06-01 | 中冶赛迪上海工程技术有限公司 | Method for producing low-phosphorous steel by single converter and double oxygen lances |
| CN106048136A (en) * | 2016-07-27 | 2016-10-26 | 北京科技大学 | Online steelmaking tapping process powder injection deoxidizing method and system |
| CN109306392A (en) * | 2017-07-27 | 2019-02-05 | 佟萌 | A kind of use for refining molten steel air-flow dusts element with spray formula Ladle Bottom |
| JP3213241U (en) * | 2017-08-16 | 2017-10-26 | 唐山正豊鋼鉄有限公司 | Out-of-furnace molten steel dephosphorization system |
| CN109136455A (en) * | 2018-10-15 | 2019-01-04 | 马鞍山钢铁股份有限公司 | A method of it bessemerizing terminal slag bubble and quickly eliminates |
| CN209974818U (en) * | 2019-05-30 | 2020-01-21 | 无锡东大汉森冶金实业有限公司 | Device for modifying slag powder spraying and separating slag and steel during converter tapping |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112226576A (en) * | 2020-09-27 | 2021-01-15 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and method for carbon spraying deoxidation by using slag stopping system |
| CN113832286A (en) * | 2021-09-17 | 2021-12-24 | 东北大学 | Device and method for powder injection dephosphorization and slag blocking at converter steel tapping hole and composite dephosphorization agent |
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