CN107175325B - System and method for off-line baking of hot-metal ladle by utilizing residual steel return line - Google Patents
System and method for off-line baking of hot-metal ladle by utilizing residual steel return line Download PDFInfo
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- CN107175325B CN107175325B CN201710454502.5A CN201710454502A CN107175325B CN 107175325 B CN107175325 B CN 107175325B CN 201710454502 A CN201710454502 A CN 201710454502A CN 107175325 B CN107175325 B CN 107175325B
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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
- B22D41/12—Travelling ladles or similar containers; Cars for ladles
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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
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a system and a method for off-line baking of a hot-metal ladle by utilizing a residual steel return line. Comprising the following steps: the charging span, the furnace span and the molten steel receiving span are sequentially arranged in parallel, and the charging span, the furnace span and the molten steel receiving span are connected through a residual steel return vehicle track; the residual steel return vehicle track is provided with a residual steel return vehicle; a roaster is arranged at one side of the rest steel return vehicle track in the molten steel receiving span; the waste steel return trolley is connected with the empty hot-metal ladle after the iron is charged in the furnace in a bridging manner, is transported to the inner roaster of the molten steel receiving span along the waste steel return trolley track, and is used for carrying out roasting operation on the hot-metal ladle, and after the roasting is completed, the waste steel return trolley is used for transporting the empty hot-metal ladle back to the charging span along the waste steel return trolley track. The residual steel return trolley is utilized to perform offline cross-span baking of the hot metal ladle, so that the utilization rate of the residual steel return trolley is greatly improved, and the space for cross-process operation of feeding is increased. Has higher application value for newly-built or upgraded and reformed steel-making workshops.
Description
Technical Field
A process method and a device for baking a hot-metal ladle off line by utilizing a residual steel return line are developed, the existing residual steel return vehicle in a workshop is utilized as a carrier of the hot-metal ladle used by the hot-metal ladle line, the off-line baking of the hot-metal ladle realizes the temperature requirement of an ironmaking area on the ladle lining of the hot-metal ladle, and the method and the device belong to the field of steelmaking processes.
Background
Steel enterprises are basic industries of national economy, steel yield is continuously improved in recent years under the situation of rapid development of national economy, and crude steel yield in 2015 of China reaches 8.04 multiplied by 10 8 t/a, accounting for 49.5 percent of the global coarse steel yield.
The conventional steelmaking continuous casting workshop is provided with a residual steel return vehicle which is mainly responsible for the return of residual steel in the continuous casting workshop, the residual steel is poured into a ladle car on the residual steel return vehicle, the ladle car is transported to a charging span by the span, and the residual steel in the ladle is added into a steelmaking furnace by a crane. The hot-metal ladle adopting the 'one-pot' hot-metal direct supply process needs to be baked after being added with iron, and the lining of the baked hot-metal ladle reaches 800 ℃, so that the temperature drop rate after iron making and tapping can be well reduced.
The residual steel returning vehicle is used as a residual steel returning special vehicle, the utilization rate is very low, and in addition, the hot metal ladle baking needs to occupy the charging cross-area of the steelmaking furnace, so that the space of process operation in a workshop is affected.
The invention creatively utilizes the residual steel return trolley to perform offline cross-span baking of the hot metal ladle, thereby not only greatly improving the utilization rate of the residual steel return trolley, but also increasing the space of the cross-process operation of charging.
Disclosure of Invention
The invention provides a device for baking a hot-metal ladle off-line by using a residual steel return line.
In order to achieve the above object, the present invention provides a system for off-line baking of hot metal cans using a surplus steel return line, comprising: the charging span, the furnace span and the molten steel receiving span are sequentially arranged in parallel, and the charging span, the furnace span and the molten steel receiving span are connected through a residual steel return vehicle track; the residual steel return vehicle track is provided with a residual steel return vehicle;
a roaster is arranged at one side of the rest steel return vehicle track in the molten steel receiving span;
the waste steel return trolley is connected with the empty hot-metal ladle after the iron is charged in the furnace in a bridging manner, is transported to the inner roaster of the molten steel receiving span along the waste steel return trolley track, and is used for carrying out roasting operation on the hot-metal ladle, and after the roasting is completed, the waste steel return trolley is used for transporting the empty hot-metal ladle back to the charging span along the waste steel return trolley track.
Further, the device also comprises a residual steel recovery system, wherein the residual steel recovery system comprises a continuous casting machine arranged on one side of the molten steel receiving span and a smelting furnace tapping rail arranged on the other side of the molten steel receiving span, a hot metal ladle bracket is arranged between a steel wire discharged from the smelting furnace and the continuous casting machine, and a hot metal ladle for receiving residual steel is arranged on the hot metal ladle bracket;
the receiving span crane is used for hoisting the ladle and the hot metal ladle among the tapping rail, the continuous casting machine and the hot metal ladle stand.
Further, a molten iron pouring system is arranged on the residual steel return vehicle track in the material span;
the molten iron pouring system comprises a dust treatment device and a weighing device; the dust treatment device comprises a semi-closed cover and a dust processor, wherein the semi-closed cover is communicated with the dust processor through a dust removal pipe.
Further, a ladle car track for transporting molten iron is arranged in the charging span, and the charging span crane for lifting the ladle between the ladle car track, the residual steel return car track and the smelting furnace is further included.
Further, a motor and a torque cable drum for supplying power to the motor are arranged on the residual steel return vehicle; the motor is used for driving the residual steel return vehicle to run on the residual steel return vehicle track.
In order to achieve the above purpose, according to the method of the system for off-line baking of hot metal ladle by using the residual steel return line, the residual steel return truck performs baking operation in the gap where the residual steel return operation is performed according to the instruction.
Further, the baking operation includes the steps of:
s11: the residual steel return vehicle conveys the empty hot metal ladle after the iron is added into the molten steel receiving span along the residual steel return vehicle track;
s12: the roaster performs roasting operation on the empty hot-metal ladle on the residual steel return vehicle;
s13: and after baking, the residual steel return trolley conveys the empty hot-metal ladle back to the charging span along the residual steel return trolley track.
Further, the remaining steel furnace returning operation comprises the following steps:
s21: the molten steel receives the empty molten iron tank on the residual steel return vehicle to be lifted off by a cross crane, and then the molten iron tank filled with the residual steel is lifted to the residual steel return vehicle;
s22: and the residual steel return trolley conveys the residual steel filled hot metal ladle to the charging span along the residual steel return trolley track, and the charging span crane lifts the residual steel filled hot metal ladle to the smelting furnace for residual steel return.
Further, before step S11, the method further comprises a hot-metal charging operation, wherein the hot-metal charging operation comprises the following steps:
s31: the ladle car transports the ladle filled with molten iron to a charging span of a steelmaking workshop along the ladle car track;
s32: hanging a hot metal ladle to a smelting furnace by a charging cross crane for hot metal charging operation; after the iron charging is completed, the empty hot-metal ladle is lifted to the residual steel return trolley by a charging cross crane.
Further, after step S13, the method further includes the steps of:
s14: and the charging cross crane lifts the empty ladle after the baking of the residual steel on the return trolley back to the ladle car, and the ladle car reversely conveys the empty ladle back to the ironmaking area along the ladle car track.
The residual steel return trolley is utilized to perform offline cross-span baking of the hot metal ladle, so that the utilization rate of the residual steel return trolley is greatly improved, and the space for cross-process operation of feeding is increased. Has higher application value for newly-built or upgraded and reformed steel-making workshops.
And the charging cross crane lifts the empty ladle after the baking of the residual steel on the return trolley back to the ladle car, and the ladle car reversely conveys the empty ladle back to the ironmaking area along the ladle car track.
The invention creatively utilizes the residual steel return trolley to perform offline cross-span baking of the hot metal ladle, thereby not only greatly improving the utilization rate of the residual steel return trolley, but also increasing the space of the cross-process operation of charging. Has higher application value for newly-built or upgraded and reformed steel-making workshops.
Drawings
FIG. 1 is a plan view of a process for off-line baking of hot metal cans using a residual steel return line;
fig. 2A-a cross-sectional view.
1, a steel wire is discharged from a smelting furnace; 2, returning the rest steel to the vehicle track; 3, returning the rest steel to the vehicle; 4, a continuous casting machine; 5, tapping the ladle car; 6, tapping the molten iron tank; 7, a hot-metal ladle; 8, moment cable winding drum; 9, a roaster; 10, a seat frame; 11, receiving molten steel to cross the crane; 12, steelmaking furnace; 13, feeding straddling the crane; 14, a ladle car track; and 15, a ladle car.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1-2, the present embodiment provides a system for off-line baking of hot metal cans using a surplus steel return line, comprising: the charging span, the furnace span and the molten steel receiving span are sequentially arranged in parallel, and the device also comprises a residual steel return vehicle track 2 for connecting the charging span, the furnace span and the molten steel receiving span; the surplus steel return vehicle track 2 is provided with a surplus steel return vehicle 3;
a roaster 9 is arranged on one side of the residual steel return vehicle track 2 in the molten steel receiving span;
the surplus steel return vehicle 3 is connected with the empty hot-metal ladle after the iron is charged in a furnace in a bridging manner, the empty hot-metal ladle is transported to the position of the inner roaster 9 of the molten steel receiving span along the surplus steel return vehicle track 2, the roaster 9 carries out roasting operation on the hot-metal ladle, and after the roasting is completed, the surplus steel return vehicle 3 transports the empty hot-metal ladle back to the charging span along the surplus steel return vehicle track 2.
Wherein, the surplus steel return vehicle 3 is provided with a motor and a torque cable drum 8 for supplying power to the motor; the motor is used for driving the residual steel return vehicle 3 to run on the residual steel return vehicle track 2.
Preferably, the motor of the residual steel return vehicle 3 is a speed reducing motor, the running speed of the vehicle body is 0-30 m/min, and the braking mode is energy consumption braking.
Preferably, the roaster 9 toasts the hot metal ladle 7 with a gas (converter gas/coke oven gas) medium at a temperature of 45-55deg.C, most preferably at a temperature of 50deg.C.
The arrangement of the residual steel return vehicle track 2 in the embodiment ensures that the residual steel return vehicle 3 not only can carry out residual steel return operation, but also can carry out baking operation of the empty hot metal ladle in the time interval of the residual steel return operation,
when the surplus steel return operation is carried out, the empty hot metal ladle 7 after the completion of the hot metal charging is placed on the surplus steel return vehicle 3, a torque cable drum 8 on the vehicle body supplies power to a motor, and the motor drives the surplus steel return vehicle 3 to be transported into a molten steel receiving span along the surplus steel return vehicle track 2. The roaster 9 performs roasting operation on the empty hot-metal ladle 7 on the residual steel return car 3, and after roasting is completed, the torque cable drum 8 on the car body supplies power to the motor, and the motor drives the residual steel return car 3 to return into the charging span along the residual steel return car track 2.
When the baking operation of the empty hot-metal bottle 7 is carried out, the empty hot-metal bottle 7 on the residual steel return vehicle 3 is dismounted, then the hot-metal bottle 7 filled with residual steel is placed on the residual steel return vehicle 3, a torque cable drum 8 on the vehicle body supplies power to a motor, the motor drives the residual steel return vehicle 3 to return into a charging span along the residual steel return vehicle track 2, and the hot-metal bottle 7 is sent to a smelting furnace for residual steel return.
In the embodiment, the residual steel returning vehicles 3 are used for respectively carrying out the returning of residual steel and the off-line cross-span baking of the hot metal ladle 7, so that the utilization rate of the residual steel returning vehicles 3 is greatly improved, a special baking line for the hot metal ladle is not required to be additionally arranged, the space for the process operation of feeding cross-process is increased, and the cost is saved.
Example 2
On the basis of the embodiment 1, the device further comprises a residual steel recovery system, wherein the residual steel recovery system comprises a continuous casting machine 4 arranged on one side of the molten steel receiving span and a smelting furnace tapping rail 1 arranged on the other side of the molten steel receiving span, a hot metal ladle bracket 10 is arranged between the smelting furnace tapping rail 1 and the continuous casting machine 4, and a hot metal ladle for receiving residual steel is arranged on the hot metal ladle bracket 10;
and the receiving span crane is used for lifting the ladle and the hot metal ladle between the tapping rail 1, the continuous casting machine 4 and the hot metal ladle holder 10.
The system also comprises a surplus steel recovery system, wherein the surplus steel recovery system comprises a continuous casting machine 4 arranged on one side in the molten steel receiving span, a smelting furnace tapping line 1 arranged on the other side in the molten steel receiving span and a molten steel receiving span crane 11;
the empty ladle 7 is arranged on the bracket 10, so that the molten iron ladle 7 on the residual steel return vehicle 3 can be poured into the molten iron ladle 7 when the residual steel return vehicle 3 is baked or the residual steel return vehicle 3 is not positioned in the molten steel receiving span.
Example 3
On the basis of the embodiment 2, a molten iron pouring system is arranged on a residual steel return vehicle track 2 in the material span;
the molten iron pouring system comprises a dust treatment device and a weighing device; the dust treatment device comprises a semi-closed cover and a dust processor, wherein the semi-closed cover is communicated with the dust processor through a dust removal pipe.
The residual steel return vehicle 3 runs into the charging span to perform molten iron pouring operation, so that the utilization rate of the residual steel return vehicle 3 is improved to a greater extent, and the space of a workshop is saved; and the running track is on the same straight line, so that the middle track change is not needed, and the time and the cost are saved.
Preferably, the weighing device comprises a static track scale arranged at the lower part of the track. And a static rail scale 13 is arranged on the residual steel return line, the residual steel return carts 3 before and after pouring are weighed, and the difference value between the front and the back is the molten iron pouring weight.
Preferably, an electric butterfly valve is arranged in the dust removing pipe; when pouring steel, the electric butterfly valve is opened, and when pouring steel, the electric butterfly valve is closed.
Before pouring, opening an electric butterfly valve 11 between the molten iron pouring system and the dust treatment device; closing the electric butterfly valve 11 after the tank pouring is finished; the dust generated by the tank inversion is treated by a dust removal system through a dust removal pipe 3 and then discharged after reaching the standard.
Example 4
On the basis of the embodiment 3, the charging span is internally provided with a ladle car rail 14 for conveying molten iron, and the charging span crane 13 for lifting a ladle between the ladle car rail 14, the residual steel return car rail 2 and the smelting furnace is further included.
When the hot-metal bottle 7 is baked, the charging span crane 13 lifts the empty hot-metal bottle 7 after the hot-metal bottle is completely filled with iron to the residual steel return vehicle 3, the torque cable drum 8 on the vehicle body supplies power to the motor, and the motor drives the residual steel return vehicle 3 to be transported into the molten steel receiving span along the residual steel return vehicle track 2. The roaster 9 performs roasting operation on the empty hot-metal ladle 7 on the residual steel return car 3, and after roasting is completed, the torque cable drum 8 on the car body supplies power to the motor, and the motor drives the residual steel return car 3 to return into the charging span along the residual steel return car track 2. The charging span crane 13 lifts the empty ladle 7 after the baking of the residual steel on the return car 3 back to the ladle car 15, and the ladle car 15 reversely transports the ladle 7 back to the ironmaking area along the ladle car track 14.
When the surplus steel returning vehicle carries out surplus steel returning operation, the empty hot metal ladle 7 on the surplus steel returning vehicle 3 is lifted by the molten steel receiving span crane 11, then the hot metal ladle 7 filled with the surplus steel is lifted to the surplus steel returning vehicle 3, the torque cable drum 8 on the vehicle body supplies power to the motor, the surplus steel returning vehicle 3 is driven by the motor to return into the charging span along the surplus steel returning vehicle track 2, and the hot metal ladle 7 is lifted to the smelting furnace by the charging span crane 13 for surplus steel returning.
During the hot-metal charging operation, the hot-metal ladle car 15 conveys the hot-metal ladle 7 fully loaded with molten iron into a charging span of a steelmaking workshop along a hot-metal ladle car track 14, the charging span crane 13 lifts the hot-metal ladle 7 to the smelting furnace 12 for the hot-metal charging operation, and after the hot-metal charging operation is completed, the charging span crane 13 lifts the empty hot-metal ladle 7 to the residual steel return car 3, and the residual steel return car 3 conveys the empty hot-metal ladle to the roasting operation.
Example 5
A method of using the system for off-line baking of hot metal ladle 7 in a scrap return line according to any of the above embodiments, wherein the scrap return cart 3 system is instructed to perform a baking operation or a scrap return operation.
Wherein the baking operation comprises the following steps:
s11: the residual steel return vehicle conveys the empty hot metal ladle after the iron is added into the molten steel receiving span along the residual steel return vehicle track;
s12: the roaster performs roasting operation on the empty hot-metal ladle on the residual steel return vehicle;
s13: and after baking, the residual steel return trolley conveys the empty hot-metal ladle back to the charging span along the residual steel return trolley track.
Wherein, the remaining steel furnace returning operation comprises the following steps:
s21: the molten steel receives the empty molten iron tank on the residual steel return vehicle to be lifted off by a cross crane, and then the molten iron tank filled with the residual steel is lifted to the residual steel return vehicle;
s22: and the residual steel return trolley conveys the residual steel filled hot metal ladle to the charging span along the residual steel return trolley track, and the charging span crane lifts the residual steel filled hot metal ladle to the smelting furnace for residual steel return.
The arrangement of the residual steel return vehicle track 2 in the embodiment ensures that the residual steel return vehicle 3 not only can carry out residual steel return operation, but also can carry out baking operation of the empty hot metal ladle 7 in the time interval of the residual steel return operation,
when the surplus steel return operation is carried out, the empty hot metal ladle 7 after the completion of the hot metal charging is placed on the surplus steel return vehicle 3, a torque cable drum 8 on the vehicle body supplies power to a motor, and the motor drives the surplus steel return vehicle 3 to be transported into a molten steel receiving span along the surplus steel return vehicle track 2. The roaster 9 performs roasting operation on the empty hot-metal ladle 7 on the residual steel return car 3, and after roasting is completed, the torque cable drum 8 on the car body supplies power to the motor, and the motor drives the residual steel return car 3 to return into the charging span along the residual steel return car track 2.
When the baking operation of the empty hot-metal bottle 7 is carried out, the empty hot-metal bottle 7 on the residual steel return vehicle 3 is dismounted, then the hot-metal bottle 7 filled with residual steel is placed on the residual steel return vehicle 3, a torque cable drum 8 on the vehicle body supplies power to a motor, the motor drives the residual steel return vehicle 3 to return into a charging span along the residual steel return vehicle track 2, and the hot-metal bottle 7 is sent to a smelting furnace for residual steel return.
In the embodiment, the residual steel returning vehicles 3 are used for respectively carrying out the returning of residual steel and the off-line cross-span baking of the hot metal ladle 7, so that the utilization rate of the residual steel returning vehicles 3 is greatly improved, a special baking line for the hot metal ladle is not required to be additionally arranged, the space for the process operation of feeding cross-process is increased, and the cost is saved.
Example 6
On the basis of embodiment 5, the method further comprises a hot-metal charging operation before step S11, wherein the hot-metal charging operation comprises the following steps:
s31: the ladle car transports the ladle filled with molten iron to a charging span of a steelmaking workshop along the ladle car track;
s32: hanging a hot metal ladle to a smelting furnace by a charging cross crane for hot metal charging operation; after the iron charging is completed, the empty hot-metal ladle is lifted to the residual steel return trolley by a charging cross crane.
During the hot-metal charging operation, the hot-metal ladle car 15 conveys the hot-metal ladle 7 fully loaded with molten iron into a charging span of a steelmaking workshop along a hot-metal ladle car track 14, the charging span crane 13 lifts the hot-metal ladle 7 to the smelting furnace 12 for the hot-metal charging operation, and after the hot-metal charging operation is completed, the charging span crane 13 lifts the empty hot-metal ladle 7 to the residual steel return car 3, and the residual steel return car 3 conveys the empty hot-metal ladle to the roasting operation.
Example 7
On the basis of embodiment 6, after step S3, the steps further include:
the charging span crane 13 lifts the empty ladle 7 after the baking of the residual steel on the return car 3 back to the ladle car 15, and the ladle car 15 reversely conveys the empty ladle 7 back to the ironmaking area along the ladle car track 14.
The working procedure of this embodiment is: the crane is used for lifting the hot metal ladle 7 to the surplus steel return trolley 3, the surplus steel return trolley 3 is used for transferring, the hot metal ladle 7 is baked, the surplus steel return trolley 3 is used for returning, and the crane is used for lifting the hot metal ladle 7 to return to the hot metal ladle car 15.
The residual steel return trolley 3 is utilized to perform offline cross-span baking on the hot metal ladle 7, so that the utilization rate of the residual steel return trolley 3 is greatly improved, and the space for cross-process operation of charging is increased. So that the transportation of molten iron, the charging of the molten iron and the baking of the molten iron tank are finished at one time, and the time and the cost are saved. Has higher application value for newly-built or upgraded and reformed steel-making workshops.
The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be defined by the claims.
Claims (3)
1. A system for off-line baking of hot-metal cans using a spent steel return line, comprising: the charging span, the furnace span and the molten steel receiving span are sequentially arranged in parallel, and the charging span, the furnace span and the molten steel receiving span are connected through a residual steel return vehicle track; the residual steel return vehicle track is provided with a residual steel return vehicle;
a roaster is arranged at one side of the rest steel return vehicle track in the molten steel receiving span;
the method comprises the steps that a surplus steel return trolley is connected with an empty hot-metal ladle after the iron is charged in a furnace in a bridging manner, the surplus steel return trolley is transported to a position of a molten steel receiving span inner roaster along a surplus steel return trolley track, the roaster carries out roasting operation on the hot-metal ladle, and after roasting is completed, the surplus steel return trolley transports the empty hot-metal ladle to a charging span along the surplus steel return trolley track;
the device comprises a molten steel receiving span, a molten steel tank seat frame and a molten steel collecting device, wherein the molten steel receiving span is arranged on the molten steel receiving span;
also comprises a steel tapping rail in the smelting furnace a molten steel receiving span crane for hoisting the ladle and the molten steel ladle between the continuous casting machine and the molten steel ladle bracket;
a molten iron pouring system is arranged on the residual steel return vehicle track in the charging span;
the molten iron pouring system comprises a dust treatment device and a weighing device; the dust treatment device comprises a semi-closed cover and a dust processor, wherein the semi-closed cover is communicated with the dust processor through a dust removal pipe;
the method of the system for off-line baking of the hot-metal ladle by utilizing the residual steel return line comprises the steps that the residual steel return vehicle is subjected to baking operation in a gap for carrying out residual steel furnace return operation according to instructions;
the baking operation includes the steps of:
s11: the residual steel return vehicle conveys the empty hot metal ladle after the iron is added into the molten steel receiving span along the residual steel return vehicle track;
s12: the roaster performs roasting operation on the empty hot-metal ladle on the residual steel return vehicle;
s13: after baking, the residual steel return vehicle conveys the empty hot-metal ladle back to the charging span along the residual steel return vehicle track;
the remaining steel furnace returning operation comprises the following steps:
s21: the molten steel receives the empty molten iron tank on the residual steel return vehicle to be lifted off by a cross crane, and then the molten iron tank filled with the residual steel is lifted to the residual steel return vehicle;
s22: the residual steel return trolley conveys the residual steel filled hot metal ladle to a charging span along a residual steel return trolley track, and the charging span crane lifts the residual steel filled hot metal ladle to a smelting furnace for residual steel return;
the method further comprises a hot metal charging operation before the step S11, wherein the hot metal charging operation comprises the following steps of:
s31: the ladle car transports the ladle filled with molten iron to a charging span of a steelmaking workshop along the ladle car track;
s32: hanging a hot metal ladle to a smelting furnace by a charging cross crane for hot metal charging operation; after the iron charging is completed, the empty hot-metal ladle is lifted to a residual steel return vehicle by a charging cross crane;
after step S13, the method further comprises the steps of:
s14: and the charging cross crane lifts the empty ladle after the baking of the residual steel on the return trolley back to the ladle car, and the ladle car reversely conveys the empty ladle back to the ironmaking area along the ladle car track.
2. The system for off-line baking of hot metal ladle using a residual steel return line as recited in claim 1 wherein said charging bay has a ladle car rail for transporting molten iron therein and further comprising a charging bay crane for lifting the hot metal ladle between the ladle car rail, the residual steel return car rail and the metallurgical furnace.
3. The system for off-line baking of hot-metal cans using a residual steel return line of claim 1, wherein the residual steel return carriage is provided with a motor and a torque cable drum for supplying power to the motor; the motor is used for driving the residual steel return vehicle to run on the residual steel return vehicle track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454502.5A CN107175325B (en) | 2017-06-15 | 2017-06-15 | System and method for off-line baking of hot-metal ladle by utilizing residual steel return line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454502.5A CN107175325B (en) | 2017-06-15 | 2017-06-15 | System and method for off-line baking of hot-metal ladle by utilizing residual steel return line |
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| Publication Number | Publication Date |
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| CN107175325A CN107175325A (en) | 2017-09-19 |
| CN107175325B true CN107175325B (en) | 2023-07-18 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002256321A (en) * | 2001-03-01 | 2002-09-11 | Kawasaki Heavy Ind Ltd | Device for transporting molten iron ladle between converters and molten iron ladle set used for this device |
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| CN106378444A (en) * | 2016-11-17 | 2017-02-08 | 中冶华天工程技术有限公司 | Thermal insulation method and device for molten iron |
| CN206779449U (en) * | 2017-06-15 | 2017-12-22 | 中冶华天工程技术有限公司 | The system of steel line of return off-line baking hot-metal bottle more than a kind of utilization |
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2017
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| JP2002256321A (en) * | 2001-03-01 | 2002-09-11 | Kawasaki Heavy Ind Ltd | Device for transporting molten iron ladle between converters and molten iron ladle set used for this device |
| JP2008240071A (en) * | 2007-03-27 | 2008-10-09 | Daido Steel Co Ltd | Ladle refining apparatus |
| JP2013241634A (en) * | 2012-05-18 | 2013-12-05 | Jfe Steel Corp | Method for transporting molten iron ladle and apparatus for detaching or attaching lid to or from molten iron ladle |
| CN103433474A (en) * | 2013-08-16 | 2013-12-11 | 北京首钢国际工程技术有限公司 | Two-way conveying system for blast furnace molten iron conveying process of conveying ladle to bottom without stopping |
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| CN103978167A (en) * | 2014-05-24 | 2014-08-13 | 北京首钢国际工程技术有限公司 | Multifunctional pig casting machine system for molten iron transportation one-jar-to-bottom process |
| CN105238891A (en) * | 2015-10-20 | 2016-01-13 | 北京首钢国际工程技术有限公司 | Direct connection type process for iron making and steel making interface |
| CN105969931A (en) * | 2016-06-27 | 2016-09-28 | 江苏永钢集团有限公司 | Recycling method for large ladle of residues |
| CN106378444A (en) * | 2016-11-17 | 2017-02-08 | 中冶华天工程技术有限公司 | Thermal insulation method and device for molten iron |
| CN206779449U (en) * | 2017-06-15 | 2017-12-22 | 中冶华天工程技术有限公司 | The system of steel line of return off-line baking hot-metal bottle more than a kind of utilization |
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|---|---|
| CN107175325A (en) | 2017-09-19 |
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