CN106755748A - The system and method for separating high-temp melt field trash - Google Patents
The system and method for separating high-temp melt field trash Download PDFInfo
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- CN106755748A CN106755748A CN201710121064.0A CN201710121064A CN106755748A CN 106755748 A CN106755748 A CN 106755748A CN 201710121064 A CN201710121064 A CN 201710121064A CN 106755748 A CN106755748 A CN 106755748A
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- molten steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses the system and method for separating high-temp melt field trash, system includes：There is oxygen coverter, the oxygen coverter feed(raw material)inlet to be exported with molten steel；There is vertical high-temperature melt spun equipment, the vertical high-temperature melt spun equipment molten steel entrance, the outlet of purifying molten steel and field trash to export, and the molten steel entrance is connected with molten steel outlet；Tundish, the tundish has melt inlet and melt outlet, and the melt inlet is connected with the purifying molten steel outlet；And casting and rolling installation, the casting and rolling installation is connected with the melt outlet.Can be efficiently separated using the system and remove field trash of the particle diameter more than 10 μm in high-temperature fusant, while high-temperature fusant can be de-gassed, so as to significantly improve the quality and performance of the product prepared using high-temperature fusant.
Description
Technical field
The present invention relates to metallurgical technology field, specifically, the present invention relates to separating high-temp melt field trash system and
Method.
Background technology
In steelmaking process, removal of inclusions and degassing be steelmaking process basic task, be also improve finished product steel quality
Steps necessary.It is existing ironmaking new technological flow be generally pretreatment-converter smelting-external refining outside blast furnace ironmaking-molten iron furnace-
Continuous casting and rolling or continuous casting-blank hot send Direct Rolling.Wherein, the main purpose of molten steel furnace external refining is removal of inclusions and alloy
Change, in order to improve the quality of finished steel as much as possible, prior art is typically by the cleanliness factor for improving raw material, oxidation reinforced behaviour
Make, extend calm time, ladle argon-blown or strengthen the means such as body of heater maintenance to ensure furnace lining quality, remove field trash.But, with
Upper technological means can only remove more than 20 μm of field trash, helpless for less than 20 μm be mingled with, and these small are mingled with
Thing is more easy to influence steel product quality.
Therefore, the existing means for being separated off molten steel inclusion still have much room for improvement.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, of the invention
One purpose is the system and method for proposing separating high-temp melt field trash.Removing can be efficiently separated using the system high
Field trash of the particle diameter more than 10 μm, while can be de-gassed to high-temperature fusant, high temperature is used so as to significantly improve in warm melt
The quality and performance of the product that melt is prepared.
In the first aspect of the present invention, the present invention proposes a kind of system of separating high-temp melt field trash.According to this hair
Bright embodiment, the system includes：There is oxygen coverter, the oxygen coverter feed(raw material)inlet to be exported with molten steel；Vertical high-temperature melts
There is body centrifugation apparatus, the vertical high-temperature melt spun equipment molten steel entrance, the outlet of purifying molten steel and field trash to export, described
Molten steel entrance is connected with molten steel outlet；Tundish, the tundish has melt inlet and melt outlet, and the melt enters
Mouth is connected with the purifying molten steel outlet；And casting and rolling installation, the casting and rolling installation is connected with the melt outlet.
Thus, the system of separating high-temp melt field trash according to embodiments of the present invention by using vertical high-temperature melt from
Heart equipment carries out separating treatment to smelting the molten steel for obtaining in oxygen coverter, such that it is able to efficiently separate remove molten steel in particle diameter
Field trash more than 10 μm, separated molten steel after purification flows into tundish, and is supplied to casting and rolling installation via tundish and carry out
Follow-up casting treatment.
In addition, the system of separating high-temp melt field trash according to the above embodiment of the present invention can also have following adding
Technical characteristic：
In some embodiments of the invention, the vertical high-temperature melt spun equipment includes：Rotary drum, the rotary drum has
Molten steel entrance and purifying molten steel outlet；Tubular sieve plate, the tubular sieve plate is coaxially set in the rotary drum, and by the rotary drum
The molten steel chamber being separated into the tubular sieve plate and the purifying molten steel chamber outside the tubular sieve plate；Driving group
Part, the drive component is connected with the rotary drum.Thus, it is possible to drive rotary drum to rotate by drive component, and make to be purified
Molten steel enters purifying molten steel chamber by molten steel chamber by tubular sieve plate, so that the field trash in molten steel is screened out using sieve plate,
Obtain purifying molten steel.
In some embodiments of the invention, it is provided with heating component on the drum inner wall.Thus, it is possible to high temperature
Melt preheated before separating treatment, so as to improve the mobility of high-temperature fusant.
In some embodiments of the invention, the vertical high-temperature melt spun equipment is further included：Vacuumizing assembly,
The vacuumizing assembly is connected with the rotary drum.Thus, it is possible to pass through vacuumizing assembly vacuumize rotary drum, so as to improve separation
The effect for the treatment of.
In the second aspect of the present invention, the present invention proposes a kind of separating high-temp melt field trash of use preceding embodiment
System separating high-temp melt field trash method.Embodiments in accordance with the present invention, the method includes：Oxygen coverter is smelted
Being supplied to vertical high-temperature melt spun equipment to molten steel carries out separating treatment, to obtain purifying molten steel and field trash；And will
The purifying molten steel is supplied to casting and rolling installation for use by tundish, to carry out casting treatment to the purifying molten steel.
Thus, the method for separating high-temp melt field trash according to embodiments of the present invention by using vertical high-temperature melt from
Heart equipment carries out separating treatment to smelting the molten steel for obtaining in oxygen coverter, such that it is able to efficiently separate remove molten steel in particle diameter
Field trash more than 10 μm, separated molten steel after purification flows into tundish, and is supplied to casting and rolling installation via tundish and carry out
Follow-up casting treatment.
In addition, the method for separating high-temp melt field trash according to the above embodiment of the present invention can also have following adding
Technical characteristic：
In some embodiments of the invention, before the separating treatment is carried out, in advance by the vertical high-temperature melt from
Heart equipment is preheated to 1500~1800 degrees Celsius.Thus, it is possible to the mobility of high-temperature fusant is significantly improved, so as to improve at separation
The effect of reason.
In some embodiments of the invention, before the separating treatment is carried out, the rotary drum is evacuated to 70 in advance
~600Pa.Thus, it is possible to molten steel is de-gassed while separating treatment is carried out, so as to further improve the quality of molten steel.
In some embodiments of the invention, the separating treatment is arranged on by by vertical high-temperature melt spun equipment
Completed under the rotating speed of 1500~4000r/min.Thus, it is possible to the field trash in molten steel is effectively removed, so as to further carry
The quality of molten steel high.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram of separating high-temp melt field trash according to an embodiment of the invention；
Fig. 2 is vertical high-temperature melt spun device structure schematic diagram according to an embodiment of the invention；
Fig. 3 is drum structure generalized section according to an embodiment of the invention；
Fig. 4 is umbrella tripper structure top view according to an embodiment of the invention；
Fig. 5 is the method flow schematic diagram of separating high-temp melt field trash according to an embodiment of the invention；
Fig. 6 is the method flow schematic diagram of the separating high-temp melt field trash according to further embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " connected " should be interpreted broadly, for example, can be with
It is to be fixedly connected, or be detachably connected, or integrally；Can mechanically connect, or electrically connect；Can be straight
Connect connected, it is also possible to be indirectly connected to by intermediary, can be two element internals connection or two phase interactions of element
With relation, unless otherwise clearly restriction.For the ordinary skill in the art, on can understanding as the case may be
State term concrete meaning in the present invention.
In the first aspect of the present invention, the present invention proposes a kind of system of separating high-temp melt field trash.According to this hair
Bright embodiment, with reference to Fig. 1~4, the system includes：Oxygen coverter 100, vertical high-temperature melt spun equipment 200, tundish 300
With casting and rolling installation 400.Wherein, oxygen coverter 100 has feed(raw material)inlet 101 with molten steel outlet 102；Vertical high-temperature melt spun sets
Standby 200 have molten steel entrance 201, purifying molten steel outlet 202 and field trash outlet 203, molten steel entrance 201 and molten steel outlet 102
It is connected；Tundish 300 has melt inlet 301 and melt outlet 302, and melt inlet 301 is connected with purifying molten steel outlet 202；
Casting and rolling installation 400 is connected with melt outlet 302.
Thus, the system of separating high-temp melt field trash according to embodiments of the present invention by using vertical high-temperature melt from
Heart equipment carries out separating treatment to smelting the molten steel for obtaining in oxygen coverter, such that it is able to efficiently separate remove molten steel in particle diameter
Field trash more than 10 μm, separated molten steel after purification flows into tundish, and is supplied to casting and rolling installation via tundish and carry out
Follow-up casting treatment.
System below with reference to Fig. 1~4 pair embodiments in accordance with the present invention separating high-temp melt field trash is retouched in detail
State：
Embodiments in accordance with the present invention, oxygen coverter 100 has feed(raw material)inlet 101 with molten steel outlet 102, oxygen coverter
100 are suitable to smelting obtains molten steel.Embodiments in accordance with the present invention, more field trash is typically contained simultaneously in the molten steel that smelting is obtained
The gases such as nitrogen, oxygen are mixed with, and high-quality steel grade is to the non-metallic inclusion (mainly oxide, sulfide) in steel etc.
Quantity, size, distribution etc. have a strict requirements, and field trash present in molten steel can drastically influence the quality and property of steel
Can, the use of steel is govern, therefore, it is necessary to take measures to be removed the field trash in steel, to improve the product of steel
Matter and performance.
Embodiments in accordance with the present invention, oxygen coverter 100 smelts the molten steel for obtaining can be by Ladle Cycling to vertical height
Warm melt spun equipment 200, ladle bottom is provided with opening and one-level valve, the opening of ladle bottom and valve and vertical high-temperature point
Feed opening operated pneumatic valve from equipment connects relatively, and tremie pipe is provided with two-stage valve.By opening the valve of ladle and centrifugation apparatus,
High-temperature fusant can be made along tremie pipe injection high-temperature fusant whizzer, while tremie pipe second stage pneumatic valve control can be used
Preparing high-temp melt flow.
There is embodiments in accordance with the present invention, vertical high-temperature melt spun equipment 200 molten steel entrance 201, purifying molten steel to go out
Mouth 202 and field trash outlet 203, molten steel entrance 201 are connected with molten steel outlet 102, and vertical high-temperature melt spun equipment 200 is suitable to
Smelting the molten steel for obtaining to oxygen coverter 100 carries out separating treatment, to obtain purifying molten steel and field trash.
Specifically, with reference to Fig. 2~4, vertical high-temperature melt spun equipment 200 includes：Rotary drum 210, tubular sieve plate 220 and drive
Dynamic component 230.Wherein, rotary drum 210 has molten steel entrance 201 and purifying molten steel outlet 202；Tubular sieve plate 220 is coaxially set in
In rotary drum 210, and rotary drum 210 is separated into molten steel chamber 221 in tubular sieve plate 220 and outside tubular sieve plate 220
Purifying molten steel chamber 222；Drive component 230 is connected with rotary drum 210.
In addition, vertical high-temperature melt spun equipment 200 also includes：Feed pipe 1, umbrella tripper 2, disk 4, operating platform
5th, the component such as high-temperature fusant passing away 6 and field trash passing away 7.
Embodiments in accordance with the present invention, can will treat that removal of impurities molten steel is supplied to rotary drum 210, by umbrella by feed pipe 1
Shape tripper 2 is divided equally to molten steel, and molten steel drops down onto rotary drum lower surface under gravity.Embodiments in accordance with the present invention, lead to
Cross molten steel is divided equally entirely using umbrella tripper, can avoid what molten steel liquid stream solid bowl centrifuges caused by skewness deviateed
Phenomenon, while impact and erosion of the molten steel liquid stream to bottom of the drum can also be reduced.
Embodiments in accordance with the present invention, umbrella tripper 2 is separate with rotary drum 210, and uniform in umbrella tripper 2
Groove is distributed with, is separated by dividing plate between groove, molten steel can be evenly distributed on rotary drum lower surface through umbrella tripper, umbrella
Shape tripper 2 is connected with feed pipe 1, and feed pipe 1 is equipped with operated pneumatic valve with the junction of umbrella tripper 2, to control high temperature melting
The flow of body.
Embodiments in accordance with the present invention, tubular sieve plate 220 is coaxially set in rotary drum 210, and rotary drum 210 is separated into position
Purifying molten steel chamber 222 in the molten steel chamber 221 in tubular sieve plate 220 and outside tubular sieve plate 220, tubular sieve plate 220
It is suitable to be separated molten steel with field trash.Specifically, embodiments in accordance with the present invention, molten steel enters the molten steel chamber of rotary drum 220
Behind room 221, rotary drum is driven to rotate by drive component 230, molten steel carries out centrifugal motion in rotary drum, and molten steel touches tubular sieve plate
When 220, particle diameter is intercepted more than 10 μm of field trash by tubular sieve plate 220, it is purified after molten steel entered by tubular sieve plate 220
Purifying molten steel chamber 222, and then purifying molten steel can discharge rotary drum by high-temperature fusant passing away 6, field trash can pass through
Field trash passing away 7 discharges rotary drum, in addition, needing argon gas to protect in high-temperature fusant passing away 6 and field trash passing away 7
Shield, and ensure to be pressure-fired in passage, to prevent high-temperature fusant to be oxidized.
According to a particular embodiment of the invention, rotary drum 210 can be arranged on disk 4, and by operating platform 5 and driving
Component 230 is connected, and specifically, can be connected by slide rail between disk and operating platform, is arranged on disk by by rotary drum,
Certain support balanced action can be played to rotary drum using disk.
According to a particular embodiment of the invention, rotary drum can be made up with tubular sieve plate of high-temperature refractory, and rotary drum
Outer surface can also be further provided with adiabator layer, thus, it is possible to further improve system resistance to elevated temperatures.
According to a particular embodiment of the invention, drive component 230 can further include：Motor 231 and driving
Axle 232, drive shaft 232 is connected with rotary drum 210, to drive rotary drum to rotate.
According to a particular embodiment of the invention, rotary drum can be driven with 1500~4000r/min rotating speeds by drive component
Rotate, it is possible thereby to further improve the efficiency that tubular sieve plate separates field trash.
According to a particular embodiment of the invention, the pore size of tubular sieve plate can be 8~10 μm, it is possible thereby to further
Improve the efficiency that tubular sieve plate separates field trash.
Embodiments in accordance with the present invention, are additionally provided with heating component 240, thus, it is possible to height on the inwall of rotary drum 210
Warm melt preheated before separating treatment, so as to improve the mobility of high-temperature fusant, improves the effect of separating treatment.Tool
Body ground, heating component can be electrical heating wire.
According to a particular embodiment of the invention, vertical high-temperature melt spun equipment can be preheated by preheating assembly 240
To 1500~1800 degrees Celsius, it is possible thereby to further improve the effect of separating treatment.
Embodiments in accordance with the present invention, vertical high-temperature melt spun equipment is further included：Vacuumizing assembly 250, takes out true
Empty component 250 is connected with rotary drum 210, and vacuumizing assembly 250 is suitable to vacuumize rotary drum.Specifically, can first to being filled in rotary drum
Full argon gas, then again vacuumizes rotary drum, it is possible thereby to pass through argon gas drain the air in rotary drum, so as to avoid oxygen in air
Gas and nitrogen carry out secondary pollution to molten steel.Meanwhile, in centrifugal process, the gas being mixed with therein will be from molten steel for molten steel
Overflow, and then the gas discharge rotary drum that will can be mixed with molten steel by vacuumizing assembly 250, reach the effect of cleaning molten steel.
According to a particular embodiment of the invention, rotary drum can be evacuated to by 70~600Pa by vacuumizing assembly 250.
Thus, it is possible to further improve the quality of molten steel.
Embodiments in accordance with the present invention, tundish 300 has melt inlet 301 and melt outlet 302, melt inlet 301
It is connected with purifying molten steel outlet 202, tundish 300 is suitable to for molten steel to be after purification transported to casting and rolling installation 400.
Embodiments in accordance with the present invention, casting and rolling installation 400 is connected with melt outlet 302, to receive from tundish 300
Molten steel after purification, and carry out follow-up casting treatment.
Thus, the system of separating high-temp melt field trash according to embodiments of the present invention by using vertical high-temperature melt from
Heart equipment carries out separating treatment to smelting the molten steel for obtaining in oxygen coverter, such that it is able to efficiently separate remove molten steel in particle diameter
Field trash more than 10 μm, specifically, after molten steel to be purified enters vertical high-temperature melt spun equipment, divides equally through umbrella tripper
Molten steel chamber in rotary drum, rotary drum centrifugation rotate under, molten steel by tubular sieve plate enter purifying molten steel chamber, realize with
The separation of field trash, in addition, the gas being mixed with molten steel can be removed by vacuumizing assembly, separated molten steel stream after purification
Enter tundish, and supplied to casting and rolling installation via tundish and carry out follow-up casting treatment.
In the second aspect of the present invention, the present invention proposes a kind of separating high-temp melt field trash of use preceding embodiment
System separating high-temp melt field trash method.Embodiments in accordance with the present invention, the method includes：Oxygen coverter is smelted
Being supplied to vertical high-temperature melt spun equipment to molten steel carries out separating treatment, to obtain purifying molten steel and field trash；And will
Purifying molten steel is supplied to casting and rolling installation for use by tundish, to carry out casting treatment to purifying molten steel.
Thus, the method for separating high-temp melt field trash according to embodiments of the present invention by using vertical high-temperature melt from
Heart equipment carries out separating treatment to smelting the molten steel for obtaining in oxygen coverter, such that it is able to efficiently separate remove molten steel in particle diameter
Field trash more than 10 μm, separated molten steel after purification flows into tundish, and is supplied to casting and rolling installation via tundish and carry out
Follow-up casting treatment.
Method below with reference to Fig. 5~6 pair separating high-temp melt field trash according to embodiments of the present invention is retouched in detail
State.Embodiments in accordance with the present invention, the method includes：
S100：Preheating
In the step, vertical high-temperature melt spun equipment is carried out into the pre-heat treatment.
Embodiments in accordance with the present invention, can be by being arranged on the heating component pair of high-temperature fusant centrifugation apparatus drum inner wall
Vertical high-temperature melt spun equipment carries out the pre-heat treatment.It is possible thereby to improve the mobility of the high-temperature fusant of access arrangement, improve
The effect of separating treatment.Specifically, heating component can be electrical heating wire.
Embodiments in accordance with the present invention, vertical high-temperature melt spun equipment can be preheated to 1500 by preheating assembly~
1800 degrees Celsius, it is possible thereby to further improve the effect of separating treatment.
S200：Vacuumize
In the step, rotary drum is vacuumized.Specifically, can first to argon gas is full of in rotary drum, then again by rotary drum
Vacuumize, it is possible thereby to pass through argon gas drain the air in rotary drum, so as to avoid oxygen and nitrogen in air from carrying out molten steel
Secondary pollution.Meanwhile, in centrifugal process, the gas being mixed with therein will overflow molten steel from molten steel, and then can pass through
The gas discharge rotary drum that vacuumizing assembly will be mixed with molten steel, reaches the effect of cleaning molten steel.
According to a particular embodiment of the invention, rotary drum can be evacuated to by 70~600Pa by vacuumizing assembly 250.
Thus, it is possible to further improve the quality of molten steel.
S300：Separating treatment
In the step, the molten steel that oxygen coverter smelting is obtained is supplied to vertical high-temperature melt spun equipment to be carried out at separation
Reason, to obtain purifying molten steel and field trash.
Embodiments in accordance with the present invention, typically contain more field trash and are mixed with nitrogen, oxygen in the molten steel that smelting is obtained
The gases such as gas, and high-quality steel grade to the quantity of the non-metallic inclusion (mainly oxide, sulfide) in steel etc., size,
Distribution etc. has a strict requirements, and field trash present in molten steel can drastically influence the quality and performance of steel, govern steel
The use of material, therefore, it is necessary to take measures to be removed the field trash in steel, to improve the quality and performance of steel.
Embodiments in accordance with the present invention, oxygen coverter smelts the molten steel for obtaining can be molten to vertical high-temperature by Ladle Cycling
Body centrifugation apparatus, ladle bottom is provided with opening and one-level valve, the opening of ladle bottom and valve and vertical high-temperature separation equipment
Feed opening operated pneumatic valve it is relative connect, tremie pipe is provided with two-stage valve.By opening the valve of ladle and centrifugation apparatus, can make
High-temperature fusant is along tremie pipe injection high-temperature fusant whizzer, while high temperature can be controlled using tremie pipe second stage pneumatic valve
Melt flow.
Embodiments in accordance with the present invention, vertical high-temperature melt spun equipment includes：Rotary drum, tubular sieve plate and drive component.
Wherein, there is rotary drum molten steel entrance and purifying molten steel to export；Tubular sieve plate is coaxially set in rotary drum, and rotary drum is separated into position
Purifying molten steel chamber in the molten steel chamber in tubular sieve plate and outside tubular sieve plate；Drive component is connected with rotary drum 210.
In addition, vertical high-temperature melt spun equipment 200 also includes：Feed pipe, umbrella tripper, disk, operating platform, height
The component such as warm melt passing away and field trash passage.
Embodiments in accordance with the present invention, can will treat that removal of impurities molten steel is supplied to rotary drum by feed pipe, by umbrella point
Glassware is divided equally to molten steel, and molten steel drops down onto rotary drum lower surface under gravity.Embodiments in accordance with the present invention, by using
Umbrella tripper is divided equally entirely to molten steel, can avoid the molten steel liquid stream phenomenon that solid bowl centrifuges deviate caused by skewness,
Impact and erosion of the molten steel liquid stream to bottom of the drum can also be reduced simultaneously.
Embodiments in accordance with the present invention, umbrella tripper is separate with rotary drum, and is uniformly distributed in umbrella tripper
There is groove, separated by dividing plate between groove, molten steel can be evenly distributed on rotary drum lower surface through umbrella tripper, umbrella point
Glassware is connected with feed pipe, and feed pipe is equipped with operated pneumatic valve with umbrella tripper junction, to control the flow of high-temperature fusant.
Embodiments in accordance with the present invention, tubular sieve plate is coaxially set in rotary drum, and rotary drum is separated into positioned at tubular sieve
Molten steel chamber in plate and the purifying molten steel chamber outside tubular sieve plate, tubular sieve plate are suitable to be divided molten steel and field trash
From.Specifically, embodiments in accordance with the present invention, after molten steel enters the molten steel chamber of rotary drum, drive rotary drum to turn by drive component
Dynamic, molten steel carries out centrifugal motion in rotary drum, and when molten steel touches tubular sieve plate, field trash of the particle diameter more than 10 μm is by tubular sieve plate
Intercept, it is purified after molten steel by tubular sieve plate enter purifying molten steel chamber, and then purify molten steel can be by high-temperature fusant
Passing away discharge rotary drum, field trash can by field trash passing away discharge rotary drum, in addition, high-temperature fusant passing away and
Need argon gas to protect in field trash passing away, and ensure to be pressure-fired in passage, to prevent high-temperature fusant to be oxidized.
According to a particular embodiment of the invention, rotary drum can be arranged on disk, and by operating platform and drive component
It is connected, specifically, can be connected by slide rail between disk and operating platform, is arranged on disk by by rotary drum, can be with profit
Certain support balanced action is played to rotary drum with disk.
According to a particular embodiment of the invention, rotary drum can be made up with tubular sieve plate of high-temperature refractory, and rotary drum
Outer surface can also be further provided with adiabator layer, thus, it is possible to further improve equipment resistance to elevated temperatures.
According to a particular embodiment of the invention, drive component can further include：Motor and drive shaft, drive
Axle is connected with rotary drum, to drive rotary drum to rotate.
According to a particular embodiment of the invention, rotary drum can be driven with 1500~4000r/min rotating speeds by drive component
Rotate, it is possible thereby to further improve the efficiency that tubular sieve plate separates field trash.
According to a particular embodiment of the invention, the pore size of tubular sieve plate can be 8~10 μm, it is possible thereby to further
Improve the efficiency that tubular sieve plate separates field trash.
Embodiments in accordance with the present invention, are additionally provided with heating component on the inwall of rotary drum, thus, it is possible to high-temperature fusant
Preheated before separating treatment, so as to improve the mobility of high-temperature fusant, improve the effect of separating treatment.
According to a particular embodiment of the invention, vertical high-temperature melt spun equipment can be preheated to by preheating assembly
1500~1800 degrees Celsius, it is possible thereby to further improve the effect of separating treatment.
Embodiments in accordance with the present invention, vertical high-temperature melt spun equipment is further included：Vacuumizing assembly, vacuumizes group
Part is connected with rotary drum, and vacuumizing assembly is suitable to vacuumize rotary drum.Specifically, can first in rotary drum be full of argon gas, Ran Houzai
Rotary drum is vacuumized, it is possible thereby to pass through argon gas drain the air in rotary drum, so as to avoid in air oxygen and nitrogen to steel
Liquid carries out secondary pollution.Meanwhile, in centrifugal process, the gas being mixed with therein will overflow molten steel from molten steel, Jin Erke
Rotary drum is discharged with the gas that will be mixed with molten steel by vacuumizing assembly, the effect of cleaning molten steel is reached.
According to a particular embodiment of the invention, rotary drum can be evacuated to by 70~600Pa by vacuumizing assembly.By
This, can further improve the quality of molten steel.
S400：Casting is processed
In the step, molten steel will be purified by tundish and supplied to casting and rolling installation and carried out casting treatment.
Thus, the method for separating high-temp melt field trash according to embodiments of the present invention by using vertical high-temperature melt from
Heart equipment carries out separating treatment to smelting the molten steel for obtaining in oxygen coverter, such that it is able to efficiently separate remove molten steel in particle diameter
Field trash more than 10 μm, specifically, after molten steel to be purified enters vertical high-temperature melt spun equipment, divides equally through umbrella tripper
Molten steel chamber in rotary drum, rotary drum centrifugation rotate under, molten steel by tubular sieve plate enter purifying molten steel chamber, realize with
The separation of field trash, in addition, the gas being mixed with molten steel can be removed by vacuumizing assembly, separated molten steel stream after purification
Enter tundish, and supplied to casting and rolling installation via tundish and carry out follow-up casting treatment.
Below with reference to specific embodiment, present invention is described, it is necessary to explanation, these embodiments are only description
Property, and the present invention is limited never in any form.
Embodiment
(1) high-temperature fusant separation equipment is preheated and is vacuumized, 1700 DEG C of preheating temperature is first led to full argon gas in rotary drum
After be evacuated to 600Pa.Operation high-temperature fusant separation equipment, rotating speed is 3000r/min.
(2) centrifugation apparatus material inlet valve is opened, makes molten steel along tremie pipe injection rotary drum, molten steel is entered through umbrella tripper
Row is divided equally, and molten steel drops down onto rotary drum lower surface under gravity.
(3) molten steel under the influence of centrifugal force, is contacted with tubular sieve plate, is filtered, after solid inclusions is through filtering
Discharged by solid inclusions passing away, it is separated after molten steel after collecting chamber is collected through high-temperature fusant passing away
Discharge rotary drum.
(4) molten steel flows into tundish through high-temperature fusant passing away, and being supplied to casting and rolling installation by tundish carries out casting
Treatment.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (8)
1. a kind of system of separating high-temp melt field trash, it is characterised in that including：
There is oxygen coverter, the oxygen coverter feed(raw material)inlet to be exported with molten steel；
Vertical high-temperature melt spun equipment, the vertical high-temperature melt spun equipment have molten steel entrance, purifying molten steel outlet and
Field trash is exported, and the molten steel entrance is connected with molten steel outlet；
Tundish, the tundish has melt inlet and melt outlet, the melt inlet and the purifying molten steel outlet phase
Even；And
Casting and rolling installation, the casting and rolling installation is connected with the melt outlet.
2. the system of separating high-temp melt field trash according to claim 1, it is characterised in that the vertical high-temperature melt
Centrifugation apparatus include：
There is rotary drum, the rotary drum molten steel entrance and purifying molten steel to export；
Tubular sieve plate, the tubular sieve plate is coaxially set in the rotary drum, and the rotary drum is separated into positioned at the tubular
Molten steel chamber in sieve plate and the purifying molten steel chamber outside the tubular sieve plate；
Drive component, the drive component is connected with the rotary drum.
3. the system of separating high-temp melt field trash according to claim 2, it is characterised in that set on the drum inner wall
It is equipped with heating component.
4. the system of separating high-temp melt field trash according to claim 2, it is characterised in that the vertical high-temperature melt
Centrifugation apparatus are further included：Vacuumizing assembly, the vacuumizing assembly is connected with the rotary drum.
5. a kind of system separating high-temp melt of the separating high-temp melt field trash described in any one of use Claims 1 to 4 is pressed from both sides
The method of debris, it is characterised in that including：
Oxygen coverter is smelted and obtains molten steel and supply to vertical high-temperature melt spun equipment to carry out separating treatment, to be purified
Molten steel and field trash；And
The purifying molten steel is supplied to casting and rolling installation for use by tundish, to carry out casting treatment to the purifying molten steel.
6. method according to claim 5, it is characterised in that before the separating treatment is carried out, in advance will be described vertical
High-temperature fusant centrifugation apparatus are preheated to 1500~1800 degrees Celsius.
7. method according to claim 5, it is characterised in that before the separating treatment is carried out, in advance by the rotary drum
It is evacuated to 70~600Pa.
8. method according to claim 5, it is characterised in that the separating treatment is by by vertical high-temperature melt spun
Equipment is arranged on what is completed under the rotating speed of 1500~4000r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710121064.0A CN106755748A (en) | 2017-03-02 | 2017-03-02 | The system and method for separating high-temp melt field trash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710121064.0A CN106755748A (en) | 2017-03-02 | 2017-03-02 | The system and method for separating high-temp melt field trash |
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| CN106755748A true CN106755748A (en) | 2017-05-31 |
Family
ID=58960645
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| CN201710121064.0A Pending CN106755748A (en) | 2017-03-02 | 2017-03-02 | The system and method for separating high-temp melt field trash |
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2017
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| JPS6338514A (en) * | 1986-08-04 | 1988-02-19 | Mitsubishi Heavy Ind Ltd | Method for removing inclusion by centrifugal force |
| EP0397486A1 (en) * | 1989-05-12 | 1990-11-14 | Kawasaki Steel Corporation | Method and apparatus for removing non-metallic inclusions in molten metal |
| CN101884956A (en) * | 2009-05-16 | 2010-11-17 | 史志铭 | High-temperature fusant filtering equipment |
| CN103060576A (en) * | 2012-12-19 | 2013-04-24 | 江西洪都航空工业集团有限责任公司 | Composite centrifugal purification method of zinc and zinc alloy melt |
| CN103602782A (en) * | 2013-11-12 | 2014-02-26 | 北京科技大学 | Method for removing nonmetallic inclusions in molten steel by means of supergravity |
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