CN108273987A - A kind of ladle ventilating filling pipe end brick cup and its method for controlling ladle roughing slag - Google Patents
A kind of ladle ventilating filling pipe end brick cup and its method for controlling ladle roughing slag Download PDFInfo
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- CN108273987A CN108273987A CN201810309436.7A CN201810309436A CN108273987A CN 108273987 A CN108273987 A CN 108273987A CN 201810309436 A CN201810309436 A CN 201810309436A CN 108273987 A CN108273987 A CN 108273987A
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- ladle
- porous plug
- filling pipe
- pipe end
- truncated cone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/58—Pouring-nozzles with gas injecting means
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
A kind of ladle ventilating filling pipe end brick cup and its method for controlling ladle roughing slag, device includes ladle upper nozzle brick cup ontology, porous plug, gas chamber box, porous plug pedestal, gassing pipe, steel outlet hole and filling pipe end mounting hole；Control method：1) ladle ventilating filling pipe end brick cup is placed in ladle bottom tapping hole, the gassing pipe being pierced by from ladle ventilating filling pipe end brick cup is connected to gas path pipe；2) when the height of molten steel ladle: ladle height=1: when (16~35), by gassing pipe to inert gas is blown into inside molten steel, liquid steel level being made to form the boss area without slag blanket, inhibit ladle roughing slag；3) when slag occurs in ladle, ladle nozzle is closed, stops being blown into gas by gassing pipe；The method of the present invention is blown into argon gas in cast latter stage, and " boss area " without slag blanket is formed in liquid steel level, effectively inhibits ladle roughing slag caused by confluence whirlpool and the heavy hole of drainage, reduces molten steel in ladle and pour surplus, reduce 35% or more on year-on-year basis.
Description
Technical field
The invention belongs to continuous casting of iron and steel fields, and in particular to a kind of ladle ventilating filling pipe end brick cup and its control ladle roughing slag
Method.
Background technology
Ladle roughing slag control is always industry general character problem in casting process, in cast latter stage molten steel ladle due to confluence
The reasons such as whirlpool, the heavy hole of drainage generate slag, cause field trash to increase, cause slab quality defect.Usually controlled using slag
System controls slag, i.e., detects that ladle roughing slag just immediately closes off the mouth of a river in casting process, but can cause so big in ladle
The molten steel of amount pours remaining, recovery rate of iron reduction.
Chinese patent literature CN104028739A (the patent No.s：201410274221) a kind of ladle ventilating filling pipe end is disclosed
Brick cup and its method for controlling mouth of a river slag, are that multiple cylinder permeable-gas ceramics are added in the ontology of ladle upper nozzle brick cup
Stick, ceramic rod are 10~16, a diameter of 12~18mm, are highly 320~380mm, are blown to molten steel by permeable-gas ceramics stick
Enter argon gas, controls ladle upper nozzle eddy generation slag problem.The patent is mainly for molten steel slag problem.The patent exist with
Lower deficiency：Ceramic ventilation rods diameter is too small, is unfavorable for gas circulation, can not effectively prevent whirlpool (vortex) slag problem；
Influence of the heavy hole of drainage to ladle roughing slag is not accounted for, slag can not be caused to propose control measure for drainage counterbore；Ventilative pottery
The quantity of porcelain stick is excessive and length is long, and pocket block production cost is high, is not suitable for industrial production.
Chinese patent literature CN104525929A (the patent No.s：201410805369) a kind of ladle bottom ring tapping is disclosed
The method of mouth blowing argon gas control ladle roughing slag, is that the air brick that width is 50~300mm is arranged around ladle bottom tapping hole,
When pouring molten steel liquid level is 150~400mm in ladle, argon gas is blown into ladle by annular gas permeable brick.The patent
It has the following disadvantages：The structure of annular gas permeable brick is not described in detail, ring production cost of breathing freely is high, and the big production in scene is difficult to big
Scale promotes and applies.
Chinese patent literature CN106978519A (the patent No.s：201710263683.3) disclose a kind of blowing argon gas and prevent steel
The method of whirlpool slag in packet tapping process is the small flow air blowing of gas hole progress in ladle bottom, is upset with this and tapped
Molten steel flow field distribution in journey, inhibits the generation of whirlpool slag phenomenon.The patent has the following disadvantages：Work is transformed to bottom of steel ladle
Journey amount is larger, does not propose effective packet bottom blowing device of air, does not account for the service life problem of bottom blowing element；The row of not accounting for
The influence caused by ladle roughing slag of the heavy hole of stream, the method for not proposing control drainage counterbore slag；Control the effect of ladle roughing slag not
It reaches.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of ladle ventilating filling pipe end brick cup and its control ladle roughing slag
The design of method, pocket block is considered based on the safety of the big production of situ industrial and economy, reasonable for structure, is produced into
This is low, and can effectively inhibit ladle roughing slag, reduces molten steel in ladle and pours surplus, reduces 35% or more on year-on-year basis, significantly
Improve molten steel recovery rate.
The ladle ventilating filling pipe end brick cup of the present invention, including it is ladle upper nozzle brick cup ontology, porous plug, gas chamber box, ventilative
Fill in pedestal, gassing pipe, steel outlet hole and filling pipe end mounting hole；The porous plug, gas chamber box, porous plug pedestal, gassing pipe, stream
Steel hole and filling pipe end mounting hole are arranged at ladle upper nozzle brick cup body interior；Steel outlet hole is located at the top of filling pipe end mounting hole
And be attached thereto it is logical, steel outlet hole with filling pipe end mounting hole is whole runs through ladle upper nozzle brick cup ontology from top to bottom；In steel outlet hole
Surrounding is provided with porous plug, gas chamber box, porous plug pedestal and gassing pipe, and porous plug is connect with porous plug pedestal enclosed package,
Gas chamber box is provided between porous plug and porous plug pedestal, porous plug is located above porous plug pedestal, and porous plug base bottom is opened
Equipped with through-hole, gassing pipe is tightly connected on through-hole, this body side surface is pierced by gassing pipe from ladle upper nozzle brick cup, gassing pipe
Minimum point be higher than steel outlet hole minimum point.
The porous plug quantity is several；Gas chamber box quantity is several；Porous plug pedestal quantity is several；And porous plug
Quantity=gas chamber box quantity=porous plug pedestal quantity.
The porous plug quantity is 2 or 4；Gas chamber box quantity is 2 or 4；Porous plug pedestal quantity is 2 or 4, and porous plug
Quantity=gas chamber box quantity=porous plug pedestal quantity.
The ladle ventilating filling pipe end brick cup is the cuboid that upper surface is square；The steel outlet hole includes top circle
Platform shape channel and lower cylindrical shape channel, the longitudinal center of the longitudinal centre line and lower cylindrical shape channel of top truncated cone-shaped channel
Line is coaxially disposed, and the upper port diameter of top truncated cone-shaped channel is more than its lower port diameter, the lower port of top truncated cone-shaped channel
Diameter is equal to the diameter in lower cylindrical shape channel；The filling pipe end mounting hole is truncated cone-shaped filling pipe end mounting hole, in truncated cone-shaped
The upper port diameter of mouth of a river mounting hole is less than the lower port diameter of truncated cone-shaped filling pipe end mounting hole, truncated cone-shaped filling pipe end mounting hole
Upper port diameter is more than the diameter in lower cylindrical shape channel, longitudinal centre line and the lower cylindrical shape of truncated cone-shaped filling pipe end mounting hole
The longitudinal centre line in channel is coaxially disposed, and the longitudinal centre line of the truncated cone-shaped filling pipe end mounting hole is ladle ventilating filling pipe end seat
One of center line of brick；The porous plug is uniformly arranged in the circumferential direction of steel outlet hole, and porous plug includes that upper end truncated cone-shaped is ventilative
Plug and lower end cylinder porous plug, the longitudinal center of the longitudinal centre line and lower end cylinder porous plug of upper end truncated cone-shaped porous plug
Line is coaxially disposed, and upper end truncated cone-shaped porous plug upper surface and the upper surface of ladle ventilating filling pipe end brick cup are located at same level,
The basal diameter of upper end truncated cone-shaped porous plug is equal with the basal diameter of lower end cylinder porous plug；The gas chamber box is cylinder
Gas chamber box, the upper surface diameter of cylindrical air chamber box are equal to the basal diameter of lower end cylinder porous plug；The porous plug pedestal
To be provided with the cylindrical porous plug pedestal of through-hole, the basal diameter for being provided with the cylindrical porous plug pedestal of through-hole is more than lower end cylinder
The total height of the basal diameter of shape porous plug, porous plug lower end cylinder and cylindrical air chamber box, which is less than, is provided with the cylindrical saturating of through-hole
The height of vent plug pedestal is provided with the longitudinal center of the longitudinal centre line and cylindrical porous plug of the cylindrical porous plug pedestal of through-hole
Line is coaxially disposed；The gassing pipe of the connection porous plug pedestal converges at after a pipeline from ladle upper nozzle brick cup ontology
Side is pierced by；The shortest distance≤the porous plug at angle of the circle of 1/2 steel outlet hole upper port away from ladle ventilating filling pipe end brick cup upper surface
The circle of the steel outlet hole upper port of the distance of upper surface distance of center circle steel outlet hole upper port≤3/4 is away from ladle ventilating filling pipe end brick cup upper surface
Angle the shortest distance.
The rectangular shape ladle ventilating filling pipe end brick cup, the upper end square surface of ladle ventilating filling pipe end brick cup
The length of side: the height of ladle ventilating filling pipe end brick cup: the upper port diameter of the top truncated cone-shaped channel of steel outlet hole: steel outlet hole it is upper
The lower port diameter of portion's truncated cone-shaped channel: the height of the top truncated cone-shaped channel of steel outlet hole: the lower cylindrical shape channel of steel outlet hole
Height: the upper port diameter of truncated cone-shaped filling pipe end mounting hole: the lower port diameter of truncated cone-shaped filling pipe end mounting hole: in truncated cone-shaped
The height of mouth of a river mounting hole: the upper surface diameter of upper end truncated cone-shaped porous plug: the lower face diameter of end truncated cone-shaped porous plug: round platform
The height of shape porous plug: the height of lower end cylinder porous plug: the height of cylindrical air chamber box: the bottom of cylindrical porous plug pedestal
Face diameter: the height of cylindrical porous plug=(425~475): (450~530): (200~220): (70~100): (160~
200): (140~180): (180~200): (200~220): (150~200): (30~50): (40~60): (150~200)
: (5~10): (5~15): (50~70): (10~40)；The side of upper end truncated cone-shaped porous plug of porous plug and inclining for horizontal plane
Angle is 80 °~89 °.
Lower end cylinder porous plug, gas chamber box and the porous plug pedestal is integrally formed.Fully take into account porous plug with
Lower end gas chamber box and porous plug pedestal connect air-tightness, it is therefore an objective to prevent gas leakage.
The porous plug is 2, is symmetrically distributed in pocket block diagonal angle；Or the porous plug is 4, symmetrical point
Cloth is in pocket block four corners.
The gas chamber box is cylinder, and the seal based on equipment of blowing considers, gas chamber box, gas are connected below porous plug
Room box has many advantages, such as easily molded, anti-dropout, prevents gas side leakage and breathe freely uniform.
The gassing pipe, the gas used are inert gas.
The circle of the steel outlet hole upper surface of the shortest distance of the porous plug upper surface distance of center circle steel outlet hole upper surface >=1/2 away from
The shortest distance at the angle of ladle ventilating filling pipe end brick cup upper surface；The principle of setting is：Due to during steel ladle pouring, molten steel
Pocket block can constantly be corroded, corroded especially at steel outlet hole upper port it is even more serious, with the progress of cast, on steel outlet hole
The diameter of port is increasing, and the position that porous plug is placed cannot be excessively close apart from steel outlet hole, easily causes the accidents such as bleed-out, based on existing
Field production security considers, this safe distance is arranged.
The circle of the steel outlet hole upper surface of the shortest distance of the porous plug upper surface distance of center circle steel outlet hole upper surface≤3/4 away from
The shortest distance at the angle of ladle ventilating filling pipe end brick cup upper surface；The principle of setting is：Due to during ladle bottom building,
What packet bottom brick was placed is located proximate to pocket block, to prevent the porous plug surface in pocket block from being covered by packet bottom brick, influences to blow
The position of gas effect, porous plug cannot be excessively close apart from the corner of ladle pocket block.
The method that the present invention controls ladle roughing slag using ladle ventilating filling pipe end brick cup, the specific steps are：
Step 1：Ladle ventilating filling pipe end brick cup is placed around ladle bottom tapping hole, it will be from ladle ventilating filling pipe end seat
The gassing pipe that brick is pierced by is connected to gas path pipe；
Step 2：When the height of molten steel ladle: ladle height=1: when (16~35), by gassing pipe into molten steel
Portion is blown into inert gas, and liquid steel level is made to form the boss area without slag blanket, inhibits ladle roughing slag；Wherein, it is blown into the pressure of gas
For 0.13~0.19MPa, gas flow is 2~10Nm3/h；
Step 3：When slag occurs in ladle, ladle nozzle is closed, stops being blown into gas by gassing pipe.
The above-mentioned method that ladle roughing slag is controlled using ladle ventilating filling pipe end brick cup, wherein：
In the step 1, the air blowing that gas path pipe is pierced by with ladle ventilating filling pipe end brick cup side is added in ladle bottom
Pipeline (5) connects.
In the step 2, inert gas is argon gas.
In the step 2, the height of molten steel ladle is 100~150mm.
In the step 2, boss area refers to：When two phase flow reaches molten steel surface, gas-liquid separation, gas enters air, quilt
Effect of the molten steel due to inertia force for driving and pouring into liquid level forms a region for having certain diameter, referred to as " boss in liquid level
Area "；Effectively inhibit ladle roughing slag by formation " boss area ", reduces steel amount more than molten steel.
A kind of ladle ventilating filling pipe end brick cup and its method for controlling ladle roughing slag, compared with prior art, advantageous effect
For：
(1) ladle ventilating filling pipe end brick cup described in the invention fully considers live big production and application safety and production
Economy devises reasonably ventilative plug structure and installation site, effectively prevent molten steel to corrode porous plug, avoid pouring molten steel
The accidents such as bleed-out occur in the process；Porous plug lower end cylinder is integrally connected with gas chamber box, porous plug pedestal, can effectively prevent device
Gas leakage；Considered based on its production cost, under conditions of not influencing its blowing effect, using the structure of symmetrically placed porous plug；
Porous plug lower end connects gas chamber box, and gas chamber box has many advantages, such as easily molded, anti-dropout, prevents gas side leakage, is ventilative uniform；It is ventilative
The quantity of plug is 2 or 4, can reduce ladle ventilating filling pipe end brick cup production cost, be conducive to live large-scale application.On year-on-year basis
10~16 ceramic rods in ladle upper nozzle brick cup in Comparison study document 1 (Chinese patent literature CN104028739A), this
Invention has more safety in utilization and production economy, and the effect for controlling ladle roughing slag becomes apparent, and is more suitable for live extensive
Commercial Application；Annular gas permeable brick in year-on-year Comparison study document 2 (Chinese patent literature CN104525929A), present invention production
Cost is lower, is more suitable for live big production and promotes and applies.
(2) present invention control ladle roughing slag method, cast latter stage be blown into inert gas, by by porous plug position,
Diameter and Argon pressure, argon blowing rate combine, and can form " boss area " without slag blanket in liquid steel level, effectively inhibit confluence whirlpool
Ladle roughing slag caused by whirlpool and the heavy hole of drainage, reduces molten steel in ladle and pours surplus, reduce 35% or more on year-on-year basis.
Description of the drawings
The ladle ventilating filling pipe end brick cup cross-sectional view of the structure of Fig. 1 embodiment of the present invention 1~3；
The ladle ventilating filling pipe end brick cup structure top view of Fig. 2 embodiment of the present invention 2 and 3；
The blowning installation structure that four pieces of porous plugs are constituted in the ladle ventilating filling pipe end brick cup of Fig. 3 embodiment of the present invention 2 and 3
Schematic diagram；Wherein, (a) blowning installation front view, (b) blowning installation vertical view；
The blowning installation structure that two pieces of porous plugs are constituted in the ladle ventilating filling pipe end brick cup of Fig. 4 embodiment of the present invention 1 is shown
It is intended to；(c) blowning installation front view, (d) blowning installation vertical view.
In figure, 1, ladle upper nozzle brick cup ontology；2, porous plug；3, gas chamber box；4, porous plug pedestal；5, gassing pipe；
6, steel outlet hole；7, filling pipe end mounting hole；8, top truncated cone-shaped porous plug；9, lower cylindrical shape porous plug；10, top truncated cone-shaped is logical
Road；11, lower cylindrical shape channel.
Specific implementation mode
Embodiment 1
A kind of ladle ventilating filling pipe end brick cup, as shown in Figure 1 and Figure 4, including it is ladle upper nozzle brick cup ontology (1), ventilative
Fill in (2), gas chamber box (3), porous plug pedestal (4), gassing pipe (5), steel outlet hole (6) and filling pipe end mounting hole (7)；It is described ventilative
Plug (2), gas chamber box (3), porous plug pedestal (4), steel outlet hole (6) and filling pipe end mounting hole (7) are arranged at ladle upper nozzle seat
Brick ontology (1) is internal, and the main body setting of gassing pipe (5) is internal in ladle upper nozzle brick cup ontology (1), and from ladle upper nozzle
Brick cup ontology (1) side is pierced by；Steel outlet hole (6) is located at the top of filling pipe end mounting hole (7) and is attached thereto logical, steel outlet hole (6)
It is whole from top to bottom through ladle upper nozzle brick cup ontology (1) with filling pipe end mounting hole (7)；It is provided with around steel outlet hole (6)
Porous plug (2), gas chamber box (3), porous plug pedestal (4) and gassing pipe (5), porous plug (2) and porous plug pedestal (4) closed envelope
Load connects, and gas chamber box (3) is provided between porous plug (2) and porous plug pedestal (4), and porous plug (2) is located at porous plug pedestal (4)
Top, porous plug pedestal (4) bottom offer through-hole, are tightly connected gassing pipe (5) on through-hole, and gassing pipe (5) is from ladle
Filling pipe end brick cup ontology (1) side is pierced by, and the minimum point of gassing pipe (5) is higher than the minimum point of steel outlet hole (6).
Porous plug (2) quantity=gas chamber box (3) quantity=porous plug pedestal (4) quantity, is 2, the porous plug (2)
It is symmetrically distributed in pocket block diagonal angle.
The ladle ventilating filling pipe end brick cup is the cuboid that upper surface is square；The steel outlet hole (6) includes upper
Portion's truncated cone-shaped channel (10) and lower cylindrical shape channel (11), the longitudinal centre line and lower cylindrical of top truncated cone-shaped channel (10)
The longitudinal centre line in shape channel (11) is coaxially disposed, and the upper port diameter of top truncated cone-shaped channel (10) is straight more than its lower port
Diameter, the lower port diameter of top truncated cone-shaped channel (10) are equal to the diameter in lower cylindrical shape channel (11)；The filling pipe end peace
It is truncated cone-shaped filling pipe end mounting hole to fill hole (7), and the upper port diameter of truncated cone-shaped filling pipe end mounting hole is pacified less than truncated cone-shaped filling pipe end
The lower port diameter in hole is filled, the upper port diameter of truncated cone-shaped filling pipe end mounting hole is more than steel outlet hole (6) lower cylindrical shape channel
(11) diameter, the longitudinal direction of the longitudinal centre line and steel outlet hole (6) lower cylindrical shape channel (11) of truncated cone-shaped filling pipe end mounting hole
Center line is coaxially disposed, and the longitudinal centre line of the truncated cone-shaped filling pipe end mounting hole is the center line of ladle ventilating filling pipe end brick cup
One of；The porous plug (2) is uniformly arranged in the circumferential direction of steel outlet hole (6), and porous plug (2) includes upper end truncated cone-shaped porous plug
(8) and lower end cylinder porous plug (9), the longitudinal centre line and lower end cylinder porous plug (9) of upper end truncated cone-shaped porous plug (8)
Longitudinal centre line coaxial arrangement, the upper surface position of upper end truncated cone-shaped porous plug (8) upper surface and ladle ventilating filling pipe end brick cup
In same level, the basal diameter phase of the basal diameter and lower end cylinder porous plug (9) of upper end truncated cone-shaped porous plug (8)
Deng；The gas chamber box (3) is cylindrical air chamber box, and the upper surface diameter of cylindrical air chamber box is equal to lower end cylinder porous plug
(9) basal diameter；The porous plug pedestal (4) is the cylindrical porous plug pedestal for being provided with through-hole, is provided with the cylinder of through-hole
The basal diameter of porous plug pedestal (4) be more than lower end cylinder porous plug (9) basal diameter, porous plug (2) lower end cylinder with
The total height of cylindrical air chamber box is less than the height for the cylindrical porous plug pedestal for being provided with through-hole, and the cylinder for being provided with through-hole is ventilative
The longitudinal centre line for filling in the longitudinal centre line and cylindrical porous plug of pedestal is coaxially disposed；The connection porous plug pedestal is blown
Feed channel (5) is pierced by after converging at a pipeline from ladle upper nozzle brick cup ontology (1) side；1/2 steel outlet hole (6) upper port
Shortest distance d2≤porous plug (2) the upper surface distance of center circle steel outlet hole (6) at angle of the circle away from ladle ventilating filling pipe end brick cup upper surface
The circle of the steel outlet holes of distance d1≤3/4 (6) upper port of upper port is away from the most short distance at the angle of ladle ventilating filling pipe end brick cup upper surface
From d2 (1/2d2≤d1≤3/4d2).
The length of side of the long shape ladle ventilating filling pipe end brick cup, upper end square surface is 425mm, is highly
450mm；The upper port diameter D4 of the steel outlet hole (6), top truncated cone-shaped channel (10) is 200mm, top truncated cone-shaped channel
(10) lower port diameter D5 is 80mm, and top truncated cone-shaped channel (10) height L3 of steel outlet hole (6) is 160mm, lower cylindrical
The height L4 in shape channel (11) is 150mm；The filling pipe end mounting hole (7), the upper port of truncated cone-shaped filling pipe end mounting hole are straight
Diameter D6 is 180mm, and the lower port diameter D7 of truncated cone-shaped filling pipe end mounting hole is 200mm, the height of truncated cone-shaped filling pipe end mounting hole
L5 is 150mm；The upper surface diameter D1 of the porous plug (2), upper end truncated cone-shaped porous plug (8) is 30mm, upper end truncated cone-shaped
The lower face diameter D2 of porous plug (8) is 40mm, and the height L1 of upper end truncated cone-shaped porous plug (8) is 160mm, and upper end truncated cone-shaped is saturating
The side of vent plug (8) and the inclination angle of horizontal plane are 87 °, and the height of lower end cylinder porous plug (9) is 5mm；The gas chamber box
(3) height is 5mm；The basal diameter D3 of the cylindrical porous plug pedestal is 50mm, the height L2 of cylindrical porous plug
For 15mm.
Lower end cylinder porous plug (9), gas chamber box (3) and porous plug pedestal (4) integrated molding.It fully takes into account
Porous plug (2) connect air-tightness with lower end gas chamber box (3) and porous plug pedestal (4), it is therefore an objective to prevent gas leakage.
The gas chamber box (3) is cylinder, and the seal based on equipment of blowing considers, gas is connected below porous plug (2)
Room box (3), gas chamber box (3) have many advantages, such as easily molded, anti-dropout, prevent gas side leakage and breathe freely uniform.
The ladle ventilating filling pipe end brick cup cross-sectional view of the structure of the present embodiment is as shown in Figure 1；In ladle ventilating filling pipe end brick cup
The blowning installation structural schematic diagram that two pieces of porous plugs are constituted is as shown in Figure 4.
It is 2600mm that 60 tons of ladles, ladle height are used in the present embodiment.
The method that ladle roughing slag is controlled using above-mentioned ladle ventilating filling pipe end brick cup, the specific steps are：
Step 1：Ladle bottom tapping hole place ladle ventilating filling pipe end brick cup, ladle bottom add gas path pipe with
Gassing pipe (5) connection that ladle ventilating filling pipe end brick cup side is pierced by；
Step 2：As molten steel ladle face height=100mm, by gassing pipe to argon gas is blown into inside molten steel, make steel
Water level forms the boss area without slag blanket, inhibits ladle roughing slag；Wherein, the pressure for being blown into argon gas is 0.13MPa, and argon flow amount is
2Nm3/h。
Step 3：When slag occurs in ladle, ladle nozzle is closed, stops being blown into argon gas by gassing pipe (5).
Embodiment 2
A kind of ladle ventilating filling pipe end brick cup, as shown in Figure 1-Figure 3.Including ladle upper nozzle brick cup ontology (1), porous plug
(2), gas chamber box (3), porous plug pedestal (4), gassing pipe (5), steel outlet hole (6) and filling pipe end mounting hole (7)；The porous plug
(2), gas chamber box (3), porous plug pedestal (4), steel outlet hole (6) and filling pipe end mounting hole (7) are arranged at ladle upper nozzle brick cup
Ontology (1) is internal, and the main body setting of gassing pipe (5) is internal in ladle upper nozzle brick cup ontology (1), and from ladle upper nozzle seat
Brick ontology (1) side is pierced by；Steel outlet hole (6) be located at the top of filling pipe end mounting hole (7) and be attached thereto it is logical, steel outlet hole (6) with
Filling pipe end mounting hole (7) is whole to run through ladle upper nozzle brick cup ontology (1) from top to bottom；It is provided with around steel outlet hole (6)
Vent plug (2), gas chamber box (3), porous plug pedestal (4) and gassing pipe (5), porous plug (2) and porous plug pedestal (4) enclosed package
Connection, is provided with gas chamber box (3), porous plug (2) is located on porous plug pedestal (4) between porous plug (2) and porous plug pedestal (4)
Side, porous plug pedestal (4) bottom offer through-hole, are tightly connected gassing pipe (5) on through-hole, gassing pipe (5) is from ladle
Pocket block ontology (1) side is pierced by, and the minimum point of gassing pipe (5) is higher than the minimum point of steel outlet hole (6).
Porous plug (2) quantity=gas chamber box (3) quantity=porous plug pedestal (4) quantity, is 4, the porous plug (2)
It is symmetrically distributed in pocket block four corners.
The ladle ventilating filling pipe end brick cup is the cuboid that upper surface is square；The steel outlet hole (6) includes upper
Portion's truncated cone-shaped channel (10) and lower cylindrical shape channel (11), the longitudinal centre line and lower cylindrical of top truncated cone-shaped channel (10)
The longitudinal centre line in shape channel (11) is coaxially disposed, and the upper port diameter of top truncated cone-shaped channel (10) is straight more than its lower port
Diameter, the lower port diameter of top truncated cone-shaped channel (10) are equal to the diameter in lower cylindrical shape channel (11)；The filling pipe end peace
It is truncated cone-shaped filling pipe end mounting hole to fill hole (7), and the upper port diameter of truncated cone-shaped filling pipe end mounting hole is pacified less than truncated cone-shaped filling pipe end
The lower port diameter in hole is filled, the upper port diameter of truncated cone-shaped filling pipe end mounting hole is more than steel outlet hole (6) lower cylindrical shape channel
(11) diameter, the longitudinal direction of the longitudinal centre line and steel outlet hole (6) lower cylindrical shape channel (11) of truncated cone-shaped filling pipe end mounting hole
Center line is coaxially disposed, and the longitudinal centre line of the truncated cone-shaped filling pipe end mounting hole is the center line of ladle ventilating filling pipe end brick cup
One of；The porous plug (2) is uniformly arranged in the circumferential direction of steel outlet hole (6), and porous plug (2) includes upper end truncated cone-shaped porous plug
(8) and lower end cylinder porous plug (9), the longitudinal centre line and lower end cylinder porous plug (9) of upper end truncated cone-shaped porous plug (8)
Longitudinal centre line coaxial arrangement, the upper surface position of upper end truncated cone-shaped porous plug (8) upper surface and ladle ventilating filling pipe end brick cup
In same level, the basal diameter phase of the basal diameter and lower end cylinder porous plug (9) of upper end truncated cone-shaped porous plug (8)
Deng；The gas chamber box (3) is cylindrical air chamber box, and the upper surface diameter of cylindrical air chamber box is equal to lower end cylinder porous plug
(9) basal diameter；The porous plug pedestal (4) is the cylindrical porous plug pedestal for being provided with through-hole, is provided with the cylinder of through-hole
The basal diameter of porous plug pedestal (4) be more than lower end cylinder porous plug (9) basal diameter, porous plug (2) lower end cylinder with
The total height of cylindrical air chamber box is less than the height for the cylindrical porous plug pedestal for being provided with through-hole, and the cylinder for being provided with through-hole is ventilative
The longitudinal centre line for filling in the longitudinal centre line and cylindrical porous plug of pedestal is coaxially disposed；The connection porous plug pedestal is blown
Feed channel (5) is pierced by after converging at a pipeline from ladle upper nozzle brick cup ontology (1) side；1/2 steel outlet hole (6) upper port
Shortest distance d2≤porous plug (2) the upper surface distance of center circle steel outlet hole (6) at angle of the circle away from ladle ventilating filling pipe end brick cup upper surface
The circle of the steel outlet holes of distance d1≤3/4 (6) upper port of upper port is away from the most short distance at the angle of ladle ventilating filling pipe end brick cup upper surface
From d2 (1/2d2≤d1≤3/4d2).
The length of side of the long shape ladle ventilating filling pipe end brick cup, upper end square surface is 450mm, is highly
490mm；The upper port diameter D4 of the steel outlet hole (6), top truncated cone-shaped channel (10) is 200mm, top truncated cone-shaped channel
(10) lower port diameter D5 is 80mm, and top truncated cone-shaped channel (10) height L3 of steel outlet hole (6) is 160mm, lower cylindrical
The height L4 in shape channel (11) is 150mm；The filling pipe end mounting hole (7), the upper port of truncated cone-shaped filling pipe end mounting hole are straight
Diameter D6 is 190mm, and the lower port diameter D7 of truncated cone-shaped filling pipe end mounting hole is 210mm, the height of truncated cone-shaped filling pipe end mounting hole
L5 is 180mm；The upper surface diameter D1 of the porous plug (2), upper end truncated cone-shaped porous plug (8) is 35mm, upper end truncated cone-shaped
The lower face diameter D2 of porous plug (8) is 50mm, and the height L1 of upper end truncated cone-shaped porous plug (8) is 180mm, and upper end truncated cone-shaped is saturating
The side of vent plug (8) and the inclination angle of horizontal plane are 88 °, and the height of lower end cylinder porous plug (9) is 5mm；The gas chamber box
(3) height is 5mm；The basal diameter D3 of the cylindrical porous plug pedestal is 55mm, the height L2 of cylindrical porous plug
For 25mm.
Lower end cylinder porous plug (9), gas chamber box (3) and porous plug pedestal (4) integrated molding.It fully takes into account
Porous plug (2) connect air-tightness with lower end gas chamber box (3) and porous plug pedestal (4), it is therefore an objective to prevent gas leakage.
The gas chamber box (3) is cylinder, and the seal based on equipment of blowing considers, gas is connected below porous plug (2)
Room box (3), gas chamber box (3) have many advantages, such as easily molded, anti-dropout, prevent gas side leakage and breathe freely uniform.
The ladle ventilating filling pipe end brick cup cross-sectional view of the structure of the present embodiment is as shown in Figure 1；Ladle ventilating filling pipe end brick cup knot
Structure vertical view is as shown in Figure 2；Blowning installation structural schematic diagram such as Fig. 3 that four pieces of porous plugs are constituted in ladle ventilating filling pipe end brick cup
It is shown.
It is 3500mm that 120 tons of ladles, ladle height are used in the present embodiment.
The method that ladle roughing slag is controlled using above-mentioned ladle ventilating filling pipe end brick cup, the specific steps are：
Step 1：Ladle bottom tapping hole place ladle ventilating filling pipe end brick cup, ladle bottom add gas path pipe with
Gassing pipe (5) connection that ladle ventilating filling pipe end brick cup side is pierced by；
Step 2：As molten steel ladle face height=130mm, by gassing pipe to argon gas is blown into inside molten steel, make steel
Water level forms the boss area without slag blanket, inhibits ladle roughing slag；Wherein, the pressure for being blown into argon gas is 0.15MPa, and argon flow amount is
5Nm3/h。
Step 3：When slag occurs in ladle, ladle nozzle is closed, stops being blown into argon gas by gassing pipe (5).
The method application of ladle ventilating filling pipe end brick cup and its control ladle roughing slag described in the embodiment of the present invention 2 is at home
On certain 120 tons of ladle of steel mill's sheet billet (CSP) production line, using the ladle ventilating filling pipe end brick cup described in the embodiment of the present invention 2
Service life be 35~50 stoves, service life has reached the requirement of produced on-site, and (requirement of produced on-site is 30~40
Stove).Under same process conditions, the method for the control ladle roughing slag described in the embodiment of the present invention 2 makes molten steel pour surplus than former work
Skill reduces 35% or more.Comparing result see the table below 1.
Table 1
| Project | Average Yu Gangliang (kg/ stoves) |
| Embodiment 2 | 330 |
| Former technique | 550 |
Embodiment 3
A kind of ladle ventilating filling pipe end brick cup, as shown in Figure 1-Figure 3, including ladle upper nozzle brick cup ontology (1), porous plug
(2), gas chamber box (3), porous plug pedestal (4), gassing pipe (5), steel outlet hole (6) and filling pipe end mounting hole (7)；The porous plug
(2), gas chamber box (3), porous plug pedestal (4), steel outlet hole (6) and filling pipe end mounting hole (7) are arranged at ladle upper nozzle brick cup
Ontology (1) is internal, and the main body setting of gassing pipe (5) is internal in ladle upper nozzle brick cup ontology (1), and from ladle upper nozzle seat
Brick ontology (1) side is pierced by；Steel outlet hole (6) be located at the top of filling pipe end mounting hole (7) and be attached thereto it is logical, steel outlet hole (6) with
Filling pipe end mounting hole (7) is whole to run through ladle upper nozzle brick cup ontology (1) from top to bottom；It is provided with around steel outlet hole (6)
Vent plug (2), gas chamber box (3), porous plug pedestal (4) and gassing pipe (5), porous plug (2) and porous plug pedestal (4) enclosed package
Connection, is provided with gas chamber box (3), porous plug (2) is located on porous plug pedestal (4) between porous plug (2) and porous plug pedestal (4)
Side, porous plug pedestal (4) bottom offer through-hole, are tightly connected gassing pipe (5) on through-hole, gassing pipe (5) is from ladle
Pocket block ontology (1) side is pierced by, and the minimum point of gassing pipe (5) is higher than the minimum point of steel outlet hole (6).
Porous plug (2) quantity=gas chamber box (3) quantity=porous plug pedestal (4) quantity, is 4, the porous plug (2)
It is symmetrically distributed in pocket block four corners.
The ladle ventilating filling pipe end brick cup is the cuboid that upper surface is square；The steel outlet hole (6) includes upper
Portion's truncated cone-shaped channel (10) and lower cylindrical shape channel (11), the longitudinal centre line and lower cylindrical of top truncated cone-shaped channel (10)
The longitudinal centre line in shape channel (11) is coaxially disposed, and the upper port diameter of top truncated cone-shaped channel (10) is straight more than its lower port
Diameter, the lower port diameter of top truncated cone-shaped channel (10) are equal to the diameter in lower cylindrical shape channel (11)；The filling pipe end peace
It is truncated cone-shaped filling pipe end mounting hole to fill hole (7), and the upper port diameter of truncated cone-shaped filling pipe end mounting hole is pacified less than truncated cone-shaped filling pipe end
The lower port diameter in hole is filled, the upper port diameter of truncated cone-shaped filling pipe end mounting hole is more than steel outlet hole (6) lower cylindrical shape channel
(11) diameter, the longitudinal direction of the longitudinal centre line and steel outlet hole (6) lower cylindrical shape channel (11) of truncated cone-shaped filling pipe end mounting hole
Center line is coaxially disposed, and the longitudinal centre line of the truncated cone-shaped filling pipe end mounting hole is the center line of ladle ventilating filling pipe end brick cup
One of；The porous plug (2) is uniformly arranged in the circumferential direction of steel outlet hole (6), and porous plug (2) includes upper end truncated cone-shaped porous plug
(8) and lower end cylinder porous plug (9), the longitudinal centre line and lower end cylinder porous plug (9) of upper end truncated cone-shaped porous plug (8)
Longitudinal centre line coaxial arrangement, the upper surface position of upper end truncated cone-shaped porous plug (8) upper surface and ladle ventilating filling pipe end brick cup
In same level, the basal diameter phase of the basal diameter and lower end cylinder porous plug (9) of upper end truncated cone-shaped porous plug (8)
Deng；The gas chamber box (3) is cylindrical air chamber box, and the upper surface diameter of cylindrical air chamber box is equal to lower end cylinder porous plug
(9) basal diameter；The porous plug pedestal (4) is the cylindrical porous plug bottom bottom for being provided with through-hole, is provided with the cylinder of through-hole
The basal diameter of porous plug pedestal (4) be more than lower end cylinder porous plug (9) basal diameter, porous plug (2) lower end cylinder with
The total height of cylindrical air chamber box is less than the height for the cylindrical porous plug pedestal for being provided with through-hole, and the cylinder for being provided with through-hole is ventilative
The longitudinal centre line for filling in the longitudinal centre line and cylindrical porous plug of pedestal is coaxially disposed；The connection porous plug pedestal is blown
Feed channel (5) is pierced by after converging at a pipeline from ladle upper nozzle brick cup ontology (1) side；1/2 steel outlet hole (6) upper port
Shortest distance d2≤porous plug (2) the upper surface distance of center circle steel outlet hole (6) at angle of the circle away from ladle ventilating filling pipe end brick cup upper surface
The circle of the steel outlet holes of distance d1≤3/4 (6) upper port of upper port is away from the most short distance at the angle of ladle ventilating filling pipe end brick cup upper surface
From d2 (1/2d2≤d1≤3/4d2).
The length of side of the long shape ladle ventilating filling pipe end brick cup, upper end square surface is 475mm, is highly
520mm；The upper port diameter D4 of the steel outlet hole (6), top truncated cone-shaped channel (10) is 220mm, top truncated cone-shaped channel
(10) lower port diameter D5 is 100mm, and top truncated cone-shaped channel (10) height L3 of steel outlet hole (6) is 200mm, lower cylindrical
The height L4 in shape channel (11) is 160mm；The filling pipe end mounting hole (7), the upper port of truncated cone-shaped filling pipe end mounting hole are straight
Diameter D6 is 190mm, and the lower port diameter D7 of truncated cone-shaped filling pipe end mounting hole is 220mm, the height of truncated cone-shaped filling pipe end mounting hole
L5 is 160mm；The upper surface diameter D1 of the porous plug (2), upper end truncated cone-shaped porous plug (8) is 50mm, upper end truncated cone-shaped
The lower face diameter D2 of porous plug (8) is 60mm, and the height L1 of upper end truncated cone-shaped porous plug (8) is 200mm, and upper end truncated cone-shaped is saturating
The side of vent plug (8) and the inclination angle of horizontal plane are 87 °, and the height of lower end cylinder porous plug (9) is 10mm；The gas chamber box
(3) height is 10mm；The basal diameter D3 of the cylindrical porous plug pedestal is 70mm, the height L2 of cylindrical porous plug
For 30mm.
Lower end cylinder porous plug (9), gas chamber box (3) and porous plug pedestal (4) integrated molding.It fully takes into account
Porous plug (2) connect air-tightness with lower end gas chamber box (3) and porous plug pedestal (4), it is therefore an objective to prevent gas leakage.
The gas chamber box (3) is cylinder, and the seal based on equipment of blowing considers, gas is connected below porous plug (2)
Room box (3), gas chamber box (3) have many advantages, such as easily molded, anti-dropout, prevent gas side leakage and breathe freely uniform.
The ladle ventilating filling pipe end brick cup cross-sectional view of the structure of the present embodiment is as shown in Figure 1；Ladle ventilating filling pipe end brick cup knot
Structure vertical view is as shown in Figure 2；Blowning installation structural schematic diagram such as Fig. 3 that four pieces of porous plugs are constituted in ladle ventilating filling pipe end brick cup
It is shown.
It is 4100mm that 180 tons of ladles, ladle height are used in the present embodiment.
The method that ladle roughing slag is controlled using above-mentioned ladle ventilating filling pipe end brick cup, the specific steps are：
Step 1：Ladle bottom tapping hole place ladle ventilating filling pipe end brick cup, ladle bottom add gas path pipe with
Gassing pipe (5) connection that ladle ventilating filling pipe end brick cup side is pierced by；
Step 2：As molten steel ladle face height=150mm, by gassing pipe to argon gas is blown into inside molten steel, make steel
Water level forms the boss area without slag blanket, inhibits ladle roughing slag；Wherein, the pressure for being blown into argon gas is 0.19MPa, and argon flow amount is
10Nm3/h。
Step 3：When slag occurs in ladle, ladle nozzle is closed, stops being blown into argon gas by gassing pipe (5).
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, it will be apparent to an ordinarily skilled person in the art that the technical side of the present invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Right in.
Claims (9)
1. a kind of ladle ventilating filling pipe end brick cup, which is characterized in that including ladle upper nozzle brick cup ontology, porous plug, gas chamber box,
Porous plug pedestal, gassing pipe, steel outlet hole and filling pipe end mounting hole；The porous plug, gas chamber box, porous plug pedestal, gas blow pipe
Road, steel outlet hole and filling pipe end mounting hole are arranged at ladle upper nozzle brick cup body interior；Steel outlet hole is located at filling pipe end mounting hole
Top and be attached thereto it is logical, steel outlet hole with filling pipe end mounting hole is whole runs through ladle upper nozzle brick cup ontology from top to bottom；
Porous plug, gas chamber box, porous plug pedestal and gassing pipe, porous plug and porous plug pedestal enclosed package are provided with around steel outlet hole
Connection is provided with gas chamber box between porous plug and porous plug pedestal, porous plug is located above porous plug pedestal, porous plug pedestal bottom
Portion offers through-hole, and gassing pipe is tightly connected on through-hole, and from ladle upper nozzle brick cup, this body side surface is pierced by gassing pipe, blows
The minimum point of pipeline is higher than the minimum point of steel outlet hole；
The porous plug quantity is several；Gas chamber box quantity is several；Porous plug pedestal quantity is several；And porous plug quantity
=gas chamber box quantity=porous plug pedestal quantity；
The ladle ventilating filling pipe end brick cup is the cuboid that upper surface is square；The steel outlet hole includes top truncated cone-shaped
Channel and lower cylindrical shape channel, the longitudinal centre line of top truncated cone-shaped channel and the longitudinal centre line in lower cylindrical shape channel are same
Axis is arranged, and the upper port diameter of top truncated cone-shaped channel is more than its lower port diameter, the lower port diameter of top truncated cone-shaped channel
Equal to the diameter in lower cylindrical shape channel；The filling pipe end mounting hole is truncated cone-shaped filling pipe end mounting hole, truncated cone-shaped filling pipe end
The upper port diameter of mounting hole is less than the lower port diameter of truncated cone-shaped filling pipe end mounting hole, the upper end of truncated cone-shaped filling pipe end mounting hole
Mouth diameter is more than the diameter in lower cylindrical shape channel, longitudinal centre line and the lower cylindrical shape channel of truncated cone-shaped filling pipe end mounting hole
Longitudinal centre line coaxial arrangement, the longitudinal centre line of the truncated cone-shaped filling pipe end mounting hole is ladle ventilating filling pipe end brick cup
One of center line；The porous plug is uniformly arranged in the circumferential direction of steel outlet hole, porous plug include upper end truncated cone-shaped porous plug and
Lower end cylinder porous plug, the longitudinal centre line of upper end truncated cone-shaped porous plug and the longitudinal centre line of lower end cylinder porous plug are same
Axis is arranged, and upper end truncated cone-shaped porous plug upper surface and the upper surface of ladle ventilating filling pipe end brick cup are located at same level, upper end
The basal diameter of truncated cone-shaped porous plug is equal with the basal diameter of lower end cylinder porous plug；The gas chamber box is cylindrical air chamber
Box, the upper surface diameter of cylindrical air chamber box are equal to the basal diameter of lower end cylinder porous plug；The porous plug pedestal is to open
The cylindrical porous plug pedestal for having through-hole, the basal diameter for being provided with the cylindrical porous plug pedestal of through-hole are more than lower end cylinder thoroughly
The total height of the basal diameter of vent plug, porous plug lower end cylinder and cylindrical air chamber box is less than the cylindrical porous plug for being provided with through-hole
The height of pedestal, the longitudinal centre line for being provided with the longitudinal centre line and cylindrical porous plug of the cylindrical porous plug pedestal of through-hole are same
Axis is arranged；The gassing pipe of the connection porous plug pedestal converges at after a pipeline from this body side surface of ladle upper nozzle brick cup
It is pierced by；The shortest distance≤porous plug the upper end at angle of the circle of 1/2 steel outlet hole upper port away from ladle ventilating filling pipe end brick cup upper surface
Angle of the circle away from ladle ventilating filling pipe end brick cup upper surface of the steel outlet hole upper port of the distance of face distance of center circle steel outlet hole upper port≤3/4
The shortest distance.
2. ladle ventilating filling pipe end brick cup according to claim 1, which is characterized in that the porous plug quantity be 2 or
4；Gas chamber box quantity is 2 or 4；Porous plug pedestal quantity is 2 or 4, and porous plug quantity=gas chamber box quantity=porous plug pedestal
Quantity.
3. ladle ventilating filling pipe end brick cup according to claim 2, which is characterized in that the porous plug is 2, symmetrically
It is distributed in pocket block diagonal angle；Or the porous plug is 4, is symmetrically distributed in pocket block four corners.
4. ladle ventilating filling pipe end brick cup according to claim 1, which is characterized in that the rectangular shape ladle is saturating
Gas filling pipe end brick cup, the length of side of the upper end square surface of ladle ventilating filling pipe end brick cup：The height of ladle ventilating filling pipe end brick cup
Degree：The upper port diameter of the top truncated cone-shaped channel of steel outlet hole：The lower port diameter of the top truncated cone-shaped channel of steel outlet hole：Flow steel
The height of the top truncated cone-shaped channel in hole：The height in the lower cylindrical shape channel of steel outlet hole：Truncated cone-shaped filling pipe end mounting hole it is upper
Port diameter：The lower port diameter of truncated cone-shaped filling pipe end mounting hole：The height of truncated cone-shaped filling pipe end mounting hole：Upper end truncated cone-shaped is saturating
The upper surface diameter of vent plug：Hold the lower face diameter of truncated cone-shaped porous plug：The height of truncated cone-shaped porous plug：Lower end cylinder is ventilative
The height of plug：The height of cylindrical air chamber box：The basal diameter of cylindrical porous plug pedestal：The height of cylindrical porous plug=
(425~475)：(450~530)：(200~220)：(70~100)：(160~200)：(140~180)：(180~200)：
(200~220)：(150~200)：(30~50)：(40~60)：(150~200)：(5~10)：(5~15)：(50~70)：
(10~40)；The side of the upper end truncated cone-shaped porous plug of porous plug and the inclination angle of horizontal plane are 80 °~89 °.
5. ladle ventilating filling pipe end brick cup according to claim 1, the lower end cylinder porous plug, gas chamber box with thoroughly
Vent plug pedestal is integrally formed.
6. using the method for ladle ventilating filling pipe end brick cup described in claim 1 control ladle roughing slag, which is characterized in that specific
Step is：
Step 1：Ladle ventilating filling pipe end brick cup is placed around ladle bottom tapping hole, will be worn from ladle ventilating filling pipe end brick cup
The gassing pipe gone out is connected to gas path pipe；
Step 2：When the height of molten steel ladle: ladle height=1: when (16~35), by gassing pipe to blowing inside molten steel
Enter inert gas, liquid steel level is made to form the boss area without slag blanket, inhibits ladle roughing slag；Wherein, the pressure for being blown into gas is
0.13~0.19MPa, gas flow are 2~10Nm3/h；
Step 3：When slag occurs in ladle, ladle nozzle is closed, stops being blown into gas by gassing pipe.
7. the method according to claim 5 for controlling ladle roughing slag using ladle ventilating filling pipe end brick cup, which is characterized in that
In the step 1, it is connect in the gassing pipe that ladle bottom adds gas path pipe with ladle ventilating filling pipe end brick cup side is pierced by.
8. the method according to claim 5 for controlling ladle roughing slag using ladle ventilating filling pipe end brick cup, which is characterized in that
In the step 2, inert gas is argon gas.
9. the method according to claim 5 for controlling ladle roughing slag using ladle ventilating filling pipe end brick cup, which is characterized in that
In the step 2, the height of molten steel ladle is 100~150mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810309436.7A CN108273987B (en) | 2018-04-09 | 2018-04-09 | Ladle air-permeable upper nozzle pocket brick and method for controlling ladle slag discharging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810309436.7A CN108273987B (en) | 2018-04-09 | 2018-04-09 | Ladle air-permeable upper nozzle pocket brick and method for controlling ladle slag discharging |
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| Publication Number | Publication Date |
|---|---|
| CN108273987A true CN108273987A (en) | 2018-07-13 |
| CN108273987B CN108273987B (en) | 2020-05-19 |
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|---|---|---|---|
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| CN109759575A (en) * | 2019-02-20 | 2019-05-17 | 山东钢铁股份有限公司 | A kind of annular air curtain barricade wall and its Argon metallurgical method for ladle |
| CN115026273A (en) * | 2022-06-16 | 2022-09-09 | 莱芜钢铁集团银山型钢有限公司 | Ladle argon blowing nozzle pocket brick and argon blowing metallurgical method thereof |
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| CN109759575A (en) * | 2019-02-20 | 2019-05-17 | 山东钢铁股份有限公司 | A kind of annular air curtain barricade wall and its Argon metallurgical method for ladle |
| CN109759575B (en) * | 2019-02-20 | 2023-08-25 | 山东钢铁股份有限公司 | Annular gas curtain wall for steel ladle and argon blowing metallurgical method thereof |
| CN115026273A (en) * | 2022-06-16 | 2022-09-09 | 莱芜钢铁集团银山型钢有限公司 | Ladle argon blowing nozzle pocket brick and argon blowing metallurgical method thereof |
| CN115026273B (en) * | 2022-06-16 | 2023-10-13 | 莱芜钢铁集团银山型钢有限公司 | Ladle argon blowing nozzle pocket brick and argon blowing metallurgical method thereof |
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