CN109504822A - RH refining rotary powder injection device and deoxidation method - Google Patents
RH refining rotary powder injection device and deoxidation method Download PDFInfo
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- CN109504822A CN109504822A CN201811480909.6A CN201811480909A CN109504822A CN 109504822 A CN109504822 A CN 109504822A CN 201811480909 A CN201811480909 A CN 201811480909A CN 109504822 A CN109504822 A CN 109504822A
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- 239000000843 powder Substances 0.000 title claims abstract description 80
- 238000007670 refining Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002347 injection Methods 0.000 title claims description 6
- 239000007924 injection Substances 0.000 title claims description 6
- 239000010959 steel Substances 0.000 claims abstract description 77
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 76
- 238000007664 blowing Methods 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 31
- 239000012159 carrier gas Substances 0.000 claims abstract description 18
- 239000007921 spray Substances 0.000 claims description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 9
- 239000006199 nebulizer Substances 0.000 claims description 8
- 230000004907 flux Effects 0.000 claims description 7
- 238000010410 dusting Methods 0.000 claims description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 229910052593 corundum Inorganic materials 0.000 description 7
- 229910001845 yogo sapphire Inorganic materials 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910000655 Killed steel Inorganic materials 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000006392 deoxygenation reaction Methods 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000003721 gunpowder Substances 0.000 description 2
- -1 NaCO3 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009865 steel metallurgy Methods 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- 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
-
- 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
- C21C7/06—Deoxidising, e.g. killing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a RH refining rotary powder spraying device and a deoxidation method, 1) a rotary powder spraying gun is inserted 400-650mm below the liquid level of molten steel, and rotary powder spraying is started; 2) the rotating speed of the rotary powder gun is 180-230 r/min; the carrier gas flow of the rotary powder spraying device is 30-90Nm3The carrier gas pressure is 0.8-1.2MPa, the powder spraying rate is 0.1-4.5kg/s, and the carrier gas is Ar gas; 3) the blowing time is 10-20min, after blowing, the powder gun is rotated to lift the liquid level of the molten steel, the rotating speed is reduced to be below 5-10r/min, the liquid level of the molten steel is lifted by 300-500mm, the rotation is accelerated for 10-30s again, and the rotating speed is 50-80 r/min.
Description
Technical field
The invention belongs to field of steel metallurgy, in particular to a kind of RH refining rotating injecting powder device and method of deoxidation.
Background technique
Currently, RH vacuum chamber injection technology, Refining powders high-pressure rotary is sprayed into vacuum chamber molten bath, Refining powders and molten
Chemical element reacts in pond, while generating tiny microbubble and will capture in molten bath there are field trash and floating, and can play net
Change the effect that molten steel removes harmful element in steel simultaneously.
Notification number CN101323895B proposes a kind of process for removing impurity from molten steel, and this method passes through
Pulvis will be prepared to spray into molten steel, played using element reaction generation micro-bubble in pulvis and molten steel and remove field trash in molten steel
Purpose, this method is applied to the techniques such as LF, RH, VD.But after this method is only applied to the refinery practices such as LF, RH, VD, by pulvis
Spray into ladle in, conveying gas pressure be 0.01~1.5MPa, belong to the blowing process of normal pressures, although this method using
Blowing process, but spray into ladle by normal pressures, pulvis in molten steel as bubble diffuses to surface, in pulvis and molten steel
Element generation chemical reaction probability is extremely low, and most pulvis can be diffused into air with bubble, therefore pulvis utilization rate is extremely low.
Notification number CN101440422A proposes a kind of RH vacuum refining top gun powder spraying device and top gun powder spraying method, this method
By adjusting top gun position, powder-trace method is improved, production efficiency is improved, saves production cost.But this method passes through top gun
By in pulvis blowing to vacuum chamber liquid level, pulvis with the indoor molten steel of vacuum there is no contacting, and element occurs in pulvis and molten steel
Chemical reaction probability is extremely low, and most pulvis can be diffused into air, therefore pulvis utilization rate is extremely low, and ideal refining effect is not achieved
Fruit.
Notification number CN201210269403.7 proposes a kind of deoxidation modification agent of molten steel, ingredient Al2O3、Al、CaCO3、
NaCO3、BaCO3Composition mixtures are waited, wherein CaCO3Ratio be greater than 60%, this method is by deoxidier during liquid steel refining
It puts into ladle, generates valuable gases and fine dispersion particle in molten steel using mixture, promote the quick deoxidation of molten steel.But it should
Directly deoxidier is added in molten steel for method, poor for the dynamic conditions control of deoxygenation, and deoxidation pulvis is in molten steel
It is inside not easy to spread, so that the utilization rate of pulvis is lower, production cost is higher.
Summary of the invention
For the defect of currently available technology, technical problem to be solved by the invention is to provide a kind of RH to refine rotation spray
Powder device and method of deoxidation.
Object of the present invention is to what is realized by following technical solution:
A kind of RH refining rotating injecting powder device, including vacuum chamber, tedge and down-comer with vacuum chamber, tedge
Gas source conveyance conduit is promoted equipped with RH, it is characterised in that: it further include rotating injecting powder rifle, the top of the rotating injecting powder rifle and rotation
Rotating motor connection, rotating electric machine drive the rotation of rotating injecting powder rifle, rotary joint are equipped with above rotating electric machine, and rotary joint connection is defeated
High-pressure air source is delivered to feed bin by feeding storehouse, conveyance conduit, and the filling of Refining powders is completed by conveying feed bin；The rotation
Podwer gun connection driving lifting device；The body of a gun of the rotary spray gun is hollow tube, and pipette tips are that inverted T-shaped swivel head is inserted into very
Below the liquid steel level and top of down-comer in empty room；It is equipped with injection hole in the two sides of inverted T-shaped swivel head, is used for RH vacuum chamber
Spray refining pulvis inside molten steel, the entire rotating injecting powder rifle body of a gun and inverted T-shaped swivel head wrap up refractory material.
The rotating injecting powder rifle rifle total length is 2500-4500mm, inverted T-shaped swivel head length 500-800mm, inverted T-shaped
Swivel head diameter is 200-400mm, and blowing bore dia is 6-15mm, and hollow pipe diameter is 80-150mm.
The vacuum chamber diameter is 1500-2500mm, vacuum chamber height 4500-5500mm, rises pipe diameter 500-
800mm, decline pipe diameter are identical as pipe diameter is risen.
Lift gas injection hole is arranged away from the vacuum chamber bottom position 600-900mm in the tedge, and blowing hole number is
8-12, lift gas is argon gas.
Described to dust for deoxidation pulvis, ingredient is Al by weight percentage2O310-35%, Al20-30%,
CaCO330-50%, the granularity of deoxidier are 0.06-0.08mm.
A kind of method of deoxidation using RH refining rotating injecting powder device, it is characterised in that include the following steps:
1) 400-650mm under rotating injecting powder rifle insertion liquid steel level, starts rotating injecting powder；2) revolving speed of rotating injecting powder rifle is
180-230r/min；The carrier gas flux 30-90Nm of the rotating injecting powder device3/ h, nebulizer gas pressure 0.8-1.2MPa, dusts
Rate is 0.1-4.5kg/s, the use of carrier gas is Ar gas；3) the blowing time is 10-20min, and rotating injecting powder rifle mentions after blowing
Liquid steel level out, revolving speed drop to 5-10r/min hereinafter, proposing the above 300-500mm of liquid steel level, spin up 10- again
30s, revolution 50-80r/min.
RH Refining powders can be delivered to inside the molten steel of RH vacuum chamber by the present invention, when working along with RH in vacuum chamber
Molten steel circulates, and rotating injecting powder device, which rotates pulvis, to be sprayed into molten steel, and pulvis is sufficiently spread inside molten steel and and steel
Element in liquid chemically reacts, and concurrently injected pulvis is integrally recycled by molten steel, is brought into and participates in following inside ladle
The molten steel circulatory function of RH itself is utilized in ring concurrently biochemical reaction, the present apparatus, and pulvis is fully used.It is rotated in pulvis
Spray into vacuum chamber molten steel during, Refining powders with microbubble by the collective effect of centrifugal force and buoyancy, along helix
It is floated to liquid level, under the action of the centrifugal force, bubble makes the better disperse of Refining powders point to pulvis emission direction regional movement
Cloth, while forming vortex in molten steel and slowly rising, to increase residence time of the refining solvent in molten steel, improve steel
The dynamic conditions that reaction carries out in liquid promotes Al in molten steel2O3It is mingled with and collides, assembles and grow up with fine particle, the gas of disperse
It steeps and sufficiently floats with field trash, improve the degree of purity of molten steel and the utilization rate of Refining powders.It can be refined in RH real in production
Existing deoxidation operation, to achieve the purpose that cleaning molten steel.
Detailed description of the invention
Fig. 1 is RH refining rotating injecting powder schematic device；
Wherein, 1. conveyance conduit；2. conveying feed bin；3. rotating electric machine；4. vacuum chamber；5. rotating injecting powder rifle；6.RH is promoted
Gas source conveyance conduit；7. ladle；8 tedges；9 down-comers；10 rotary joints.
Specific embodiment
It is illustrated combined with specific embodiments below:
Embodiment 1
Embodiment carries out on 180t ladle, for producing carbon aluminium-killed steel, implements the converter tapping temperature of steel grade
Degree is 1630 DEG C, phosphorus content 0.06%.
Ladle back cut diameter 3130mm, base diameter 2560mm, internal height 4300mm.Vacuum chamber diameter is
1780mm, vacuum chamber height 6800mm, rise pipe diameter 590mm, and decline pipe diameter is identical as pipe diameter is risen.Lift gas spray
For aperture blowing away from vacuum chamber bottom 580mm, being blown hole number is 10.
Rotating injecting powder rifle rifle total length is 7500mm, and inverted T-shaped swivel head length 580mm, stirring-head diameter is 230mm, spray
Aperture blowing diameter is 6mm, and hollow pipe diameter is 90mm.
The main component of the deoxidation pulvis used includes Al2O328%, Al22%, CaCO345%.The granularity of deoxidier is
0.07mm。
Deoxygenation step using the liquid steel refining rotary blowing of the device is as follows: 1) RH purifier work after, vacuum chamber
Interior molten steel liquid level reaches 1210mm, and rotating injecting powder rifle is connected to work order and is begun to decline by standby position, is inserted under liquid steel level
520mm starts rotating injecting powder.2) revolving speed of the rotating injecting powder rifle described in is set as 185r/min.3) the rotating injecting powder dress described in
The carrier gas flux 60Nm set3/ h, nebulizer gas pressure 1.0MPa, rate of dusting are 3.5kg/s, the use of carrier gas are Ar gas.4) described
Blowing time of rotating injecting powder device be 12min, rotating injecting powder rifle proposes liquid steel level after blowing, and revolving speed drops to 10r/
Min spins up 20s, revolution 50r/min hereinafter, the proposition above 300mm of liquid steel level again.
Implementing activity oxygen content before steel grade refines is 0.032%, the total oxygen content after the processing of rotary blowing deoxidation step
It is 0.0016%, temperature drop is 22 DEG C, and deoxidation effect is obvious.
Embodiment 2
Embodiment carries out on 180t ladle, for producing carbon aluminium-killed steel, implements the converter tapping temperature of steel grade
Degree is 1640 DEG C, phosphorus content 0.07%.
Ladle back cut diameter 3120mm, base diameter 2560mm, internal height 4300mm.Vacuum chamber diameter is
1780mm, vacuum chamber height 6850mm, rise pipe diameter 580mm, and decline pipe diameter is identical as pipe diameter is risen.Lift gas spray
For aperture blowing away from vacuum chamber bottom 600mm, being blown hole number is 12.
Rotating injecting powder rifle rifle total length is 7120mm, and inverted T-shaped swivel head length 580mm, stirring-head diameter is 230mm, spray
Aperture blowing diameter is 7mm, and hollow pipe diameter is 90mm.
The main component of the deoxidation pulvis used includes Al2O323%, Al28%, CaCO346%.The granularity of deoxidier is
0.07mm。
Deoxygenation step using the liquid steel refining rotary blowing of the device is as follows: 1) RH purifier work after, vacuum chamber
Interior molten steel liquid level reaches 1200mm, and rotating injecting powder rifle is connected to work order and is begun to decline by standby position, is inserted under liquid steel level
520mm starts rotating injecting powder.2) revolving speed of the rotating injecting powder rifle described in is set as 190r/min.3) the rotating injecting powder dress described in
The carrier gas flux 60Nm set3/ h, nebulizer gas pressure 1.5MPa, rate of dusting are 3.3kg/s, the use of carrier gas are Ar gas.4) described
Blowing time of rotating injecting powder device be 13min, rotating injecting powder rifle proposes liquid steel level after blowing, and revolving speed drops to 10r/
Min spins up 20s, revolution 50r/min hereinafter, the proposition above 300mm of liquid steel level again.
Implementing activity oxygen content before steel grade refines is 0.038%, the total oxygen content after the processing of rotary blowing deoxidation step
It is 0.0014%, temperature drop is 22 DEG C.
Embodiment 3
Embodiment carries out on 180t ladle, for producing carbon aluminium-killed steel, implements the converter tapping temperature of steel grade
Degree is 1638 DEG C, phosphorus content 0.07%.
Ladle back cut diameter 3140mm, base diameter 2580mm, internal height 4300mm.Vacuum chamber diameter is
1780mm, vacuum chamber height 7100mm, rise pipe diameter 580mm, and decline pipe diameter is identical as pipe diameter is risen.Lift gas spray
For aperture blowing away from vacuum chamber bottom 600mm, being blown hole number is 12.
Rotating injecting powder rifle rifle total length is 7800mm, and inverted T-shaped swivel head length 580mm, stirring-head diameter is 230mm, spray
Aperture blowing diameter is 6mm, and hollow pipe diameter is 90mm.
The main component of the deoxidation pulvis used includes Al2O328%, Al26%, CaCO344%.The granularity of deoxidier is
0.075mm。
Deoxygenation step using the liquid steel refining rotary blowing of the device is as follows: 1) RH purifier work after, vacuum chamber
Interior molten steel liquid level reaches 1200mm, and rotating injecting powder rifle is connected to work order and is begun to decline by standby position, is inserted under liquid steel level
520mm starts rotating injecting powder.2) revolving speed of the rotating injecting powder rifle described in is set as 195r/min.3) the rotating injecting powder dress described in
The carrier gas flux 70Nm set3/ h, nebulizer gas pressure 1.1MPa, rate of dusting are 3.4kg/s, the use of carrier gas are Ar gas.4) described
Blowing time of rotating injecting powder device be 13min, rotating injecting powder rifle proposes liquid steel level after blowing, and revolving speed drops to 10r/
Min spins up 20s, revolution 50r/min hereinafter, the proposition above 300mm of liquid steel level again.
Implementing activity oxygen content before steel grade refines is 0.041%, the total oxygen content after the processing of rotary blowing deoxidation step
It is 0.0017%, temperature drop is 24 DEG C.
Embodiment 4
Embodiment carries out on 180t ladle, for producing carbon aluminium-killed steel, implements the converter tapping temperature of steel grade
Degree is 1646 DEG C, phosphorus content 0.06%.
Ladle back cut diameter 3160mm, base diameter 2580mm, internal height 4300mm.Vacuum chamber diameter is
1780mm, vacuum chamber height 6900mm, rise pipe diameter 600mm, and decline pipe diameter is identical as pipe diameter is risen.Lift gas spray
For aperture blowing away from vacuum chamber bottom 610mm, being blown hole number is 12.
Rotating injecting powder rifle rifle total length is 7510mm, and inverted T-shaped swivel head length 580mm, stirring-head diameter is 230mm, spray
Aperture blowing diameter is 8mm, and hollow pipe diameter is 90mm.
The main component of the deoxidation pulvis used includes Al2O332%, Al24%, CaCO342%.The granularity of deoxidier is
0.08mm。
Deoxygenation step using the liquid steel refining rotary blowing of the device is as follows: 1) RH purifier work after, vacuum chamber
Interior molten steel liquid level reaches 1200mm, and rotating injecting powder rifle is connected to work order and is begun to decline by standby position, is inserted under liquid steel level
520mm starts rotating injecting powder.2) revolving speed of the rotating injecting powder rifle described in is set as 210r/min.3) the rotating injecting powder dress described in
The carrier gas flux 70Nm set3/ h, nebulizer gas pressure 1.1MPa, rate of dusting are 3.5kg/s, the use of carrier gas are Ar gas.4) described
Blowing time of rotating injecting powder device be 15min, rotating injecting powder rifle proposes liquid steel level after blowing, and revolving speed drops to 10r/
Min spins up 20s, revolution 50r/min hereinafter, the proposition above 300mm of liquid steel level again.
Implementing activity oxygen content before steel grade refines is 0.046%, the total oxygen content after the processing of rotary blowing deoxidation step
It is 0.0018%, temperature drop is 26 DEG C.
Comparative example
Carbon aluminium-killed steel is produced using the fixed top gun of RH-KTB vacuum chamber on 180t ladle, implements the converter of steel grade
Tapping temperature is 1635 DEG C, phosphorus content 0.06%, and activity oxygen content is 0.042%, and fixed top gun is away from liquid level in vacuum chamber
500mm is blown deoxidier, carrier gas flux 20Nm using carrier gas3/ h, nebulizer gas pressure 1.1MPa, carrier gas Ar.The deoxidation used
The main component of pulvis is Al2O332%, Al24%, CaCO342% etc..The granularity of deoxidier is 0.07mm, throughput 70Nm3/
H, nebulizer gas pressure 1.1MPa, rate of dusting are 5.5kg/s, and the processing time is 20min.
Implementing activity oxygen content before steel grade refines is 0.047%, and total oxygen content is 0.0035% after blowing processing, and temperature drop is
30℃。
Liquid steel refining deoxidation is carried out using the method for the present invention, improves the dynamic conditions of deoxidation in molten steel, promotes molten steel
Middle Al2O3It is mingled with and collides, assembles and grow up with other fine particles, the bubble of disperse sufficiently floats with field trash, with conventional essence
Refining blowing deoxidier is compared, and after treatment total oxygen content reduces by 30%, improves the degree of purity of molten steel, and the processing time shortens
25%, pulvis utilization rate improves 35%.
Claims (6)
1. a kind of RH refines rotating injecting powder device, including vacuum chamber, tedge and down-comer with vacuum chamber, tedge are set
There is RH to promote gas source conveyance conduit, it is characterised in that: it further include rotating injecting powder rifle, the top of the rotating injecting powder rifle and rotation
Motor connection, rotating electric machine drive the rotation of rotating injecting powder rifle, and rotary joint, rotary joint connection conveying are equipped with above rotating electric machine
High-pressure air source is delivered to feed bin by feed bin, conveyance conduit, and the filling of Refining powders is completed by conveying feed bin；The rotation spray
Powder rifle connection driving lifting device；The body of a gun of the rotary spray gun is hollow tube, and pipette tips are that inverted T-shaped swivel head is inserted into vacuum
Below the indoor liquid steel level and top of down-comer；It is equipped with injection hole in the two sides of inverted T-shaped swivel head, is used for RH vacuum chamber steel
Spray refining pulvis inside liquid, the entire rotating injecting powder rifle body of a gun and inverted T-shaped swivel head wrap up refractory material.
2. a kind of RH according to claim 1 refines rotating injecting powder device, it is characterised in that: the rotating injecting powder rifle rifle
Total length is 2500-4500mm, and inverted T-shaped swivel head length 500-800mm, inverted T-shaped swivel head diameter is 200-400mm, blowing
Bore dia is 6-15mm, and hollow pipe diameter is 80-150mm.
3. a kind of RH according to claim 1 refines rotating injecting powder device, it is characterised in that: the vacuum chamber diameter is
1500-2500mm, vacuum chamber height 4500-5500mm rise pipe diameter 500-800mm, decline pipe diameter and rising pipe diameter
It is identical.
4. a kind of RH according to claim 1 refines rotating injecting powder device, it is characterised in that: the tedge is away from vacuum
Lift gas injection hole is arranged in the room bottom position 600-900mm, and blowing hole number is 8-12, and lift gas is argon gas.
5. a kind of RH according to claim 1 refines rotating injecting powder device, it is characterised in that: described dusts for deoxidation powder
Agent, ingredient are Al by weight percentage2O310-35%, Al20-30%, CaCO330-50%, the granularity of deoxidier are 0.06-
0.08mm。
6. a kind of method of deoxidation using RH refining rotating injecting powder device described in claim 1, it is characterised in that including as follows
Step:
1) 400-650mm under rotating injecting powder rifle insertion liquid steel level, starts rotating injecting powder；2) revolving speed of rotating injecting powder rifle is 180-
230r/min；The carrier gas flux 30-90Nm of the rotating injecting powder device3/ h, nebulizer gas pressure 0.8-1.2MPa, rate of dusting
It the use of carrier gas is Ar gas for 0.1-4.5kg/s；3) the blowing time is 10-20min, and rotating injecting powder rifle proposes steel after blowing
Water level, revolving speed drop to 5-10r/min hereinafter, proposing the above 300-500mm of liquid steel level, spin up 10-30s again, turn
Number is 50-80r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811480909.6A CN109504822A (en) | 2018-12-05 | 2018-12-05 | RH refining rotary powder injection device and deoxidation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811480909.6A CN109504822A (en) | 2018-12-05 | 2018-12-05 | RH refining rotary powder injection device and deoxidation method |
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| Publication Number | Publication Date |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440422A (en) * | 2008-12-22 | 2009-05-27 | 辽宁科技学院 | Top lance power injection apparatus and method for RH vacuum refining |
| CN107299192A (en) * | 2017-04-24 | 2017-10-27 | 鞍钢股份有限公司 | Refining rotary blowing deoxidation device and deoxidation method |
| JP2018109213A (en) * | 2017-01-05 | 2018-07-12 | 新日鐵住金株式会社 | Method and apparatus for desulfurizing molten steel |
| CN209555296U (en) * | 2018-12-05 | 2019-10-29 | 鞍钢股份有限公司 | RH refining rotary powder spraying device |
-
2018
- 2018-12-05 CN CN201811480909.6A patent/CN109504822A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440422A (en) * | 2008-12-22 | 2009-05-27 | 辽宁科技学院 | Top lance power injection apparatus and method for RH vacuum refining |
| JP2018109213A (en) * | 2017-01-05 | 2018-07-12 | 新日鐵住金株式会社 | Method and apparatus for desulfurizing molten steel |
| CN107299192A (en) * | 2017-04-24 | 2017-10-27 | 鞍钢股份有限公司 | Refining rotary blowing deoxidation device and deoxidation method |
| CN209555296U (en) * | 2018-12-05 | 2019-10-29 | 鞍钢股份有限公司 | RH refining rotary powder spraying device |
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