CN108754071B - Molten iron desulphurization system by mechanical stirring method - Google Patents
Molten iron desulphurization system by mechanical stirring method Download PDFInfo
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- CN108754071B CN108754071B CN201810393416.2A CN201810393416A CN108754071B CN 108754071 B CN108754071 B CN 108754071B CN 201810393416 A CN201810393416 A CN 201810393416A CN 108754071 B CN108754071 B CN 108754071B
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- molten iron
- stirring head
- control processor
- binocular camera
- liquid level
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010907 mechanical stirring Methods 0.000 title claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 81
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 238000006477 desulfuration reaction Methods 0.000 claims description 11
- 230000023556 desulfurization Effects 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 206010063385 Intellectualisation Diseases 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to metallurgical molten iron desulphurization, and provides a mechanical stirring method molten iron desulphurization system, which comprises a steel platform, wherein a stirring head capable of rotating around a vertical axis is arranged on the steel platform, the stirring head is positioned right above a moving path of a molten iron tank, and the mechanical stirring method molten iron desulphurization system also comprises: the binocular camera is used for acquiring distance information between the binocular camera and the liquid level in the molten iron tank; the control processor is used for collecting and processing distance information detected by the binocular camera so as to calculate the height difference between the stirring head and the liquid level in the molten iron tank; and the stirring head driving mechanism is used for driving the stirring head to vertically move according to the height difference calculated by the control processor and controlling the working state by the control processor. The binocular camera can accurately detect the liquid level in the molten iron tank, has very high precision, can reach millimeter level, can accurately detect the liquid level height even under the condition that the liquid level in the molten iron tank is uneven, has higher intellectualization, and has low requirement on the installation angle and is more convenient because the binocular camera only receives passive light.
Description
Technical Field
The invention relates to molten iron desulphurization in the field of metallurgy, in particular to a molten iron desulphurization system by a mechanical stirring method.
Background
Mechanical stirring desulphurization (also known as KR desulphurization) is an indispensable molten iron pretreatment means in modern steel plants, has the advantages of high molten iron desulphurization efficiency and low running cost, and is widely applied. The automatic detection of the molten iron liquid level is a difficult point which is difficult to overcome in the automation of the desulphurization by the mechanical stirring method. The existing molten iron liquid level automatic detection means mainly determines the molten iron liquid level by measuring the tension change of a steel wire rope of a suspension stirring head driving device when a stirring head enters molten iron, has the defect of large measurement error, and often causes the reduction of the automatic degree of desulfurization by a mechanical stirring method due to inaccurate detection of the molten iron liquid level. A small amount of molten iron liquid level is detected by adopting a laser range finder to measure the molten iron liquid level, but because iron slag often floats on the molten iron surface, the measurement error of the method is larger, the requirement on the installation angle of the laser range finder is severer, and the using effect is not good enough.
Disclosure of Invention
The invention aims to provide a mechanical stirring method molten iron desulphurization system, and aims to solve the problem that the detection accuracy of the molten iron liquid level in the existing mechanical stirring method desulphurization system is poor.
The invention is realized by the following steps:
the embodiment of the invention provides a molten iron desulphurization system by a mechanical stirring method, which comprises a steel platform, wherein a stirring head capable of rotating around a vertical axis is arranged on the steel platform, the stirring head is positioned right above a moving path of a molten iron tank, and the molten iron desulphurization system further comprises:
the binocular camera is used for acquiring distance information between the binocular camera and the liquid level in the molten iron tank;
the control processor is used for collecting and processing distance information detected by the binocular camera so as to calculate the height difference between the stirring head and the liquid level in the molten iron tank;
and the stirring head driving mechanism is used for driving the stirring head to vertically move according to the height difference calculated by the control processor and controlling the working state by the control processor.
Further, still include: the encoder is used for recording the lifting stroke of the stirring head;
the encoder controller is used for processing the data generated by the encoder and feeding the data information back to the control processor;
the encoder is connected with the stirring head driving mechanism through a cable, and the encoder controller is connected with the encoder and the control processor.
Further, the device also comprises an operation table which is used for receiving the data information of the control processor and controlling the encoder controller to work.
Furthermore, the position detected by the binocular camera is an intersection point between the rotation axis of the stirring head and the liquid level in the molten iron tank.
Further, install lifting track frame on the steel platform, in it is used for ordering about to slide on the lifting track frame the rotatory actuating mechanism of stirring head around vertical axis pivoted, the stirring head install in on the rotatory actuating mechanism, just rotatory actuating mechanism slides along vertical direction.
Further, the steel platform includes upper mounting plate and lower platform, the upper and lower both ends of lift track frame install respectively in upper mounting plate with on the lower platform, just the binocular camera install in on the lower platform.
Furthermore, the stirring head driving mechanism comprises a rotating shaft for winding a steel wire rope, a motor for driving the rotating shaft to rotate and a pulley block for limiting the steel wire rope in a wrapping mode, the steel wire rope is connected with the rotating shaft and the stirring head, and the motor is electrically connected with the control processor.
The invention has the following beneficial effects:
in the desulfurization system, the positions of the binocular cameras are fixed, the distance between the binocular cameras and one of detection positions of the liquid level of the molten iron tank can be detected through the binocular cameras, the height difference between the binocular cameras and the liquid level in the molten iron tank can be calculated, the height difference between the stirring heads and the liquid level in the molten iron tank can be calculated due to the fact that the positions of the stirring heads and the binocular cameras are fixed, and the stirring head driving mechanism drives the stirring heads to vertically move for a corresponding distance so that the stirring heads can stir molten iron in the molten iron tank. Adopt two mesh cameras can accurately detect out the liquid level in the molten iron jar, and the precision is very high, can reach the millimeter level, and also can accurately detect the liquid level height even under the condition of molten iron jar liquid level unevenness, and intelligent higher, because two mesh cameras only accept passive light in addition, low to the requirement of installation angle, it is more convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a system for desulfurizing molten iron by a mechanical stirring method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a molten iron desulphurization system by a mechanical stirring method, which cooperates with a molten iron ladle transport vehicle 2 and is used for stirring molten iron in a molten iron ladle 21 on the molten iron ladle transport vehicle 2, and includes a steel platform 1, wherein the steel platform 1 is a main structure of the desulphurization system, the molten iron ladle transport vehicle 2 is used for transporting molten iron, a molten iron ladle 21 can be installed on the molten iron ladle transport vehicle 2, the molten iron ladle 21 can store molten iron to be desulfurized, a stirring head 11 is arranged on the steel platform 1, the stirring head 11 is vertically arranged downwards and can rotate around a vertical axis thereof, the stirring head 11 is positioned right above a moving path of the molten iron ladle transport vehicle 2, that is, the molten iron ladle transport vehicle 2 can move to a position right below the stirring head 11 along a track thereof, the stirring head 11 can move downwards vertically to extend into the molten iron ladle 21 on the molten iron ladle transport vehicle 2, and the desulphurization system further includes a binocular camera 12, The control processor 14 and the stirring head driving mechanism 13, wherein the binocular camera 12 is used for collecting distance information between the binocular camera 12 and the liquid level in the molten iron tank 21 on the molten iron tank transport vehicle 2, the control processor 14 is used for collecting the distance information detected by the binocular camera 12 and processing and calculating the distance information, and the stirring head driving mechanism 13 is a power component for moving the stirring head 11 in the vertical direction, and the stirring head driving mechanism drives the stirring head 11 to vertically move for a corresponding distance after receiving the data information processed by the control processor 14 so that the stirring head 11 can extend into the molten iron tank 21. In the embodiment of the present invention, it is assumed that the moving distance of the mixer head 11 is defined as H, the initial height of the moving path of the mixer head 11 from the hot metal ladle transport vehicle 2 is defined as H0, the installation height of the binocular camera 12 from the moving path of the hot metal ladle transport vehicle 2 is defined as H0, and the three are known numbers in the desulfurization system, and further, the linear distance from the binocular camera 12 to the molten metal ladle 21 liquid level detection position is defined as S, the horizontal direction distance from the detection position to the binocular camera 12 is defined as d, the vertical distance from the detection position to the binocular camera 12 is defined as H1, and the height from the liquid level in the molten metal ladle 21 to the moving path of the hot metal ladle transport vehicle 2 is defined as H, and thus:
S2＝d2+h12 (1)
h＝h0-h1 (2)
from formula (1), formula (2) can be derived:
from FIG. 1, it can be seen that:
H＝H0-h (4)
from formula (3), formula (4) can be derived:
wherein S is known after being detected by the binocular camera 12, and d also can be measured in advance, and can be clear and definite by the above formula promptly, after the binocular camera 12 detected the distance of the liquid level corresponding position in the hot metal bottle 21, then can accurately calculate the distance that the vertical direction of stirring head 11 needs to remove. The calculation method can be written into the control processor 14, the distance information detected by the binocular camera 12 is transmitted to the control processor 14 for calculation, and the stirring head driving mechanism 13 can drive the stirring head 11 to vertically move downwards by a corresponding distance. Adopt binocular camera 12 can accurately detect out the liquid level in hot-metal bottle 21, and the precision is very high, can reach the millimeter level, and even also can accurately detect the liquid level height under the condition of liquid level unevenness in hot-metal bottle 21, and intelligent higher, because binocular camera 12 only accepts passive light in addition, low to the requirement of installation angle, it is more convenient. In general, the position detected by the binocular camera 12 is preferably an intersection point between the rotation axis of the mixer head 11 and the liquid level in the hot metal ladle 21. Because the agitator head 11 only carries out vertical direction removal and horizontal rotation, the horizontal position of agitator head 11 keeps invariable, then the axis of rotation position of agitator head 11 is confirmed, through adjusting, so that the axis of rotation of agitator head 11 and the axis of symmetry of hot metal bottle 21 are located same straight line, binocular camera 12 detects this crossing point position, it is relatively easy to determine to detect the horizontal direction distance d of position to binocular camera 12 from this, can relatively conveniently acquire the horizontal distance between this position and binocular camera 12, and hot metal bottle transport vechicle 2 also relatively easy control hot metal bottle 21 is located this corresponding position. In addition, the method is not influenced by the position of the hot metal ladle transport vehicle 2, and the accuracy of detection data can be ensured.
Preferably, the steel platform 1 is provided with a lifting track frame 15, a rotation driving mechanism 151 is slidably disposed on the lifting track frame 15, the stirring head 11 is installed on the rotation driving mechanism 151, the rotation driving mechanism 151 can drive the stirring head 11 to rotate around its vertical axis, and the rotation driving mechanism 151 can move along the vertical direction of the lifting track frame 15. In this embodiment, the stirring head driving mechanism 13 drives the rotation driving mechanism 151 to move along the vertical direction of the lifting track frame 15, and then the lifting track frame 15 drives the stirring head 11 to move vertically in synchronization, and the lifting track frame 15 can ensure that the stirring head 11 is more stable in the vertical movement process, and the stirring head 11 is arranged on the steel platform 1 through the rotation driving mechanism 151 and the lifting track frame 15. Generally, the steel platform 1 is divided into two parts, including an upper platform 16 and a lower platform 17, of course, the upper platform 16 is located above the lower platform 17, the two are spaced apart, the lifting track frame 15 is of a long strip structure and is vertically disposed, the upper end thereof is mounted on the upper platform 16, the above-mentioned stirring head driving mechanism 13 is also mounted on the upper platform 16, the lower end of the lifting track frame 15 is mounted on the lower platform 17, and the above-mentioned binocular camera 12 is also mounted on the lower platform 17. For the lifting track frame 15, the lower end of the lifting track frame is provided with a tapered portion 152 which is tapered along the vertical downward direction, and the caliber of the tail end of the tapered portion 152 is slightly larger than the size of the stirring head 11, when the lifting track frame 15 is not in operation, the stirring head 11 is located in the lifting track frame 15, when stirring is required, the stirring head driving mechanism 13 drives the rotating driving mechanism 151 to vertically move downwards, the stirring head 11 can extend out of the lifting track frame 15 from the tapered portion 152, and after the stirring process of the stirring head 11 is completed, if a certain amount of iron slag is attached to the stirring head 11, the tapered portion 152 can play a certain slag scraping role.
The structure of the refining stirring head driving mechanism 13 comprises a rotating shaft 131, a motor and a pulley block, wherein the motor can drive the rotating shaft 131 to rotate, the motor is electrically connected with a control processor 14, the control processor 14 controls the working state of the motor to rotate forward or backward, a steel wire rope 132 is connected with the rotating shaft 131 and the stirring head 11, one end of the steel wire rope 132 is connected to the rotating shaft 131, after the rotating shaft 131 rotates, the steel wire rope 132 is sequentially wound on the rotating shaft 131, the steel wire rope 132 can pull the stirring head 11 to vertically move upwards, or the steel wire rope 132 wound on the rotating shaft 131 is sequentially unwound, so that the stirring head 11 vertically moves downwards, and in addition, the steel wire rope 132 can partially wrap the pulley block to limit the arrangement mode of the steel wire rope 132 and play a. Generally, the pulley block is divided into two groups, one of the two groups is a fixed pulley 133, the two fixed pulleys 133 may be two, and are disposed at the upper end of the lifting rail frame 15, the other group is a movable pulley 134 and is disposed below the fixed pulley 133, the movable pulley 134 is fixedly connected to the stirring head 11, the movable pulley 134 is disposed at the lowest end of the steel cable 132, the steel cable 132 is partially wrapped around the fixed pulley 133 and the movable pulley 134 in sequence, the pulley 134 is lifted up after the steel cable 132 is wound, and the stirring head 11 is driven by the movable pulley 134 to move up synchronously, otherwise, when the steel cable 132 is unwound, the lowest end of the steel cable 132 is driven by the gravity of the stirring head 11 and the movable pulley 134 to move down, and the stirring head 11 may extend into the hot metal ladle. In addition, a telescopic structure, such as a telescopic spring 153, is disposed on the lifting track frame 15, and is vertically disposed and higher than the movable pulley 134, the other end of the wire rope 132 may be connected and fixed to the telescopic spring 153, when the mixing head 11 extends into the hot metal ladle transport vehicle 2, the telescopic spring 153 is stretched, otherwise, when the mixing is completed, the wire rope 132 is wound, and the telescopic spring 153 retracts.
Continuing to optimize the above embodiment, the desulfurization system further includes an encoder 18 and an encoder controller 19, wherein the encoder 18 is used for recording the lifting stroke of the stirring head 11, and can transmit the recorded data to the encoder controller 19, the encoder controller 19 is used for processing the data generated by the encoder 18, the encoder 18 is connected with the stirring head driving mechanism 13 by using the cable 110, the encoder controller 19 is connected with the encoder 18 and the control processor 14, the data processed by the encoder controller 19 is fed back to the control processor 14, and the control processor 14 determines whether to continue to control the operation of the stirring head driving mechanism 13. The control processor 14 obtains the movement data of the stirring head 11 through the above calculation method, controls the stirring head driving mechanism 13 to work, records and processes the actual movement distance of the stirring head 11 through the encoder 18 and the encoder controller 19, and feeds the actual movement distance back to the control processor 14, so that the intelligent performance of the whole desulfurization system can be further improved. The operation console 111 is an operation center of the desulfurization system, and receives data information from the control processor 14, and controls the encoder controller 19 and the encoder 18 to operate, so that a worker can operate the entire desulfurization system at the operation console 111, or can directly operate the moving distance of the stirring head 11 at the operation console 111.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a mechanical stirring method molten iron desulfurization system, includes the steel platform, be provided with on the steel platform and wind vertical axis pivoted stirring head, directly over the removal route of hot metal bottle, its characterized in that still includes:
the binocular camera is used for collecting distance information between the binocular camera and the liquid level in the molten iron tank, and the position detected by the binocular camera is the intersection point between the rotation axis of the stirring head and the liquid level in the molten iron tank;
the control processor is used for collecting and processing distance information detected by the binocular camera so as to calculate the height difference between the stirring head and the liquid level in the molten iron tank;
the stirring head driving mechanism is used for driving the stirring head to vertically move according to the height difference calculated by the control processor and controlling the working state by the control processor;
install lift track frame on the steel platform, in it is used for ordering about to slide on the lift track frame the stirring head is around vertical axis pivoted rotary driving mechanism, the stirring head install in rotary driving mechanism is last, just rotary driving mechanism's the vertical direction in edge slides, just lift track frame's lower extreme is provided with the convergent portion along vertical decurrent direction convergent, specifically the steel platform includes upper mounting plate and lower platform, lift track frame's upper and lower both ends install respectively in the upper mounting plate with on the platform down, just binocular camera install in on the platform down.
2. The mechanically-agitated molten iron desulfurization system according to claim 1, further comprising:
the encoder is used for recording the lifting stroke of the stirring head;
the encoder controller is used for processing the data generated by the encoder and feeding the data information back to the control processor;
the encoder is connected with the stirring head driving mechanism through a cable, and the encoder controller is connected with the encoder and the control processor.
3. The mechanically-agitated molten iron desulfurization system according to claim 2, wherein: the control processor is used for receiving the data information of the control processor and controlling the encoder controller to work.
4. The mechanically-agitated molten iron desulfurization system according to claim 1, wherein: the stirring head driving mechanism comprises a rotating shaft for winding a steel wire rope, a motor for driving the rotating shaft to rotate and a pulley block for limiting the steel wire rope in a wrapping mode, the steel wire rope is connected with the rotating shaft and the stirring head, and the motor is electrically connected with the control processor.
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| CN201810393416.2A CN108754071B (en) | 2018-04-27 | 2018-04-27 | Molten iron desulphurization system by mechanical stirring method |
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| CN201810393416.2A CN108754071B (en) | 2018-04-27 | 2018-04-27 | Molten iron desulphurization system by mechanical stirring method |
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| CN109289617B (en) * | 2018-11-19 | 2021-06-01 | 西安医学院 | Preparation device and preparation method of thin-layer chromatography adsorbent homogenate |
| JP6726437B1 (en) * | 2020-05-29 | 2020-07-22 | ダイヤモンドエンジニアリング株式会社 | Mechanical stirring type desulfurization system |
| CN114408800A (en) * | 2022-03-01 | 2022-04-29 | 中冶南方工程技术有限公司 | Automatic jacking device for molten steel tank of RH vacuum refining furnace and control method |
| CN115971120A (en) * | 2023-02-08 | 2023-04-18 | 宝钢湛江钢铁有限公司 | Online thermal slag removal method for 350-ton KR stirring paddle |
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| CN103290165A (en) * | 2013-06-11 | 2013-09-11 | 鞍钢股份有限公司 | Method for measuring distance between oxygen lance nozzle and molten steel liquid level |
| CN103954330B (en) * | 2014-05-16 | 2017-02-08 | 武汉科技大学 | KR desulfurization molten iron liquid surface height measurement system and use method thereof |
| CN103981334A (en) * | 2014-05-29 | 2014-08-13 | 江苏大峘集团有限公司 | KR (knotted reactor) method steel-making desulfurization molten steel liquid level detection system |
| CN105861782A (en) * | 2016-06-06 | 2016-08-17 | 大峘集团有限公司 | Liquid level height detection system and method for liquid steel subjected to desulfurization in steelmaking process through KR method |
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