CN115786623A - Intelligent desulfurization system and control method - Google Patents
Intelligent desulfurization system and control method Download PDFInfo
- Publication number
- CN115786623A CN115786623A CN202211448714.XA CN202211448714A CN115786623A CN 115786623 A CN115786623 A CN 115786623A CN 202211448714 A CN202211448714 A CN 202211448714A CN 115786623 A CN115786623 A CN 115786623A
- Authority
- CN
- China
- Prior art keywords
- molten iron
- hopper
- stirrer
- depth
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 32
- 230000023556 desulfurization Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 200
- 229910052742 iron Inorganic materials 0.000 claims abstract description 100
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000005299 abrasion Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims description 15
- 230000003009 desulfurizing effect Effects 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Images
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses an intelligent desulfurization system and a control method, wherein the intelligent desulfurization system comprises: the blanking system comprises a mixing hopper, a blanking hopper and a chute; a material level sensor and a weighing sensor are arranged in the mixing hopper; a weighing sensor is arranged in the blanking hopper; a distance sensor is arranged on the lower edge of the chute; the stirring system comprises a stirrer and a winch for hoisting the stirrer; the device also comprises a liquid level radar for monitoring the liquid level height of the molten iron and the height of a nozzle of the molten iron tank, a depth camera for monitoring the deformation of the paddle and a temperature sensor for monitoring the temperature of the molten iron. The invention is used for sensing the parameters of molten iron through various sensors and configuring a proper desulfurizer according to the actual parameters of the molten iron. And the abrasion condition of the paddle is obtained through the vision camera, and the rotating speed of the paddle is adjusted according to the abrasion condition, so that the molten iron is always in the optimal desulfurization state, and the desulfurization efficiency is improved.
Description
Technical Field
The invention relates to a system for desulfurizing molten iron and a control method thereof.
Background
The KR desulfurization method is characterized in that a stirrer with an outer lining made of refractory material is immersed in a molten iron tank to rotate and stir molten iron, so that the molten iron generates a vortex, and a desulfurizer is added to be involved in the molten iron to perform a sufficient reaction, so that the desulfurization purpose is achieved. The KR stirring pre-desulfurization process has better thermodynamic and kinetic conditions of metallurgical reaction, so that the desulfurization efficiency can be remarkably improved under the conditions of optimal desulfurizer proportion and optimal stirring parameters, and the consumption of the desulfurizer can be greatly reduced.
The size of the stirring paddle changes due to corrosion under the influence of the service life of the stirring paddle, the technical parameters of the stirring paddle cannot be correspondingly adjusted and optimized, so that a large dead zone exists in the reaction of a desulfurizing agent in an iron tank, and the components of the desulfurizing agent cannot exert all effects, so that the stability of the desulfurizing efficiency is greatly influenced, the fluctuation of the desulfurizing efficiency has great influence on the stability of steelmaking production and the product quality, the consumption of the desulfurizing agent in the smelting process is increased, and the desulfurizing efficiency is also greatly influenced.
Disclosure of Invention
In view of this, the present invention provides an intelligent desulfurization system and a control method thereof, which perform intelligent control on the whole desulfurization process.
In order to solve the technical problems, the technical scheme of the invention is to adopt an intelligent desulfurization system, which comprises:
the blanking system is used for quantitatively blanking a desulfurizer into molten iron and comprises a mixing hopper, a blanking hopper and a chute; the discharge port of the mixing hopper is connected with the feed port of the discharging hopper, and the discharge port of the discharging hopper is connected with the chute inlet; a material level sensor and a weighing sensor are arranged in the mixing hopper; a weighing sensor is arranged in the blanking hopper; a distance sensor is arranged on the lower edge of the chute;
the stirring system is used for stirring the molten iron and comprises a stirrer and a winch for hoisting the stirrer; the stirrer comprises a rotating shaft and a blade fixed on the rotating shaft; the stirrer is driven by a motor, and an encoder is arranged on the winch; the device also comprises a liquid level radar for monitoring the liquid level height of the molten iron and the height of a nozzle of the molten iron tank, a depth camera for monitoring the deformation of the paddle and a temperature sensor for monitoring the temperature of the molten iron.
As an improvement, electric flap valves are arranged between the mixing hopper and the discharging hopper and between the discharging hopper and the chute.
As a further improvement, the mixing device also comprises a plurality of bins, wherein discharge ports of the bins are connected with feed ports of the mixing hopper; and a weighing sensor is arranged in the stock bin.
As another further improvement, an electric flap valve is arranged between the storage bin and the mixing hopper.
The invention also provides a control method of the intelligent desulfurization system, which is used for controlling the intelligent desulfurization system and comprises the following steps:
obtaining the weight of molten iron to be desulfurized, and calculating the weight of a desulfurizer to be added;
calculating the depth of molten iron, and calculating the submergence depth of the stirrer paddle according to the depth of the molten iron;
calculating the rotating speed of the stirrer according to the abrasion condition and the temperature of the blades;
and (4) putting the stirrer into the molten iron to stir according to the calculated rotating speed of the stirrer, wherein the submergence depth of the stirrer is the calculated submergence depth.
And adding a desulfurizing agent into the molten iron, and keeping the submergence depth and the rotating speed.
As an improvement, the weight of the molten iron is calculated by acquiring the height of the molten iron liquid level and the height of a molten iron tank nozzle through a liquid level radar; subtracting the liquid level rigidity of molten iron from the height of a molten iron tank nozzle to obtain a fall, and subtracting the fall from the total height of the molten iron tank to obtain the depth of the molten iron in the molten iron tank; the weight of the molten iron is obtained by multiplying the depth of the molten iron by the cross-sectional area of the molten iron tank and then by the density of the molten iron.
As an improvement, the method for adding the desulfurizing agent into the molten iron comprises the following steps:
acquiring the weight of a desulfurizer in a mixing hopper, opening a discharge port of the mixing hopper to enable the desulfurizer to enter a discharging hopper, and closing the discharge port when the weight of the desulfurizer in the mixing hopper is reduced to be the target weight;
and acquiring the weight of the desulfurizer in the blanking hopper, starting the chute to descend after the weight in the blanking hopper reaches the target weight, stopping descending when the lower edge of the chute and the hot metal ladle reach a threshold value, and starting a discharge hole of the blanking hopper to carry out blanking.
As an improvement, the blade wear condition is obtained by the following method:
modeling the unworn blades to obtain point cloud coordinates;
acquiring a real blade point cloud by using a depth camera;
converting the point cloud of the worn blade and the point cloud of the real blade into the same coordinate system, leveling by taking a low plane as a placing plane, and aligning by taking the central axis of the rotating shaft and the central axis of one blade as a reference;
and removing the point cloud overlapped by the coordinate points to obtain a wear model of the blade.
As an improvement, the submergence depth of the paddle is half of the depth of molten iron.
As an improvement, the blade speed is proportional to the degree of wear.
The invention has the advantages that: the invention is used for sensing the parameters of molten iron through various sensors and configuring a proper desulfurizer according to the actual parameters of the molten iron. And the abrasion condition of the paddle is obtained through the vision camera, and the rotating speed of the paddle is adjusted according to the abrasion condition, so that the molten iron is always in the optimal desulfurization state, and the desulfurization efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a flow chart of the present invention.
The labels in the figure are: 1 feed bin, 2 feed bins, 3 mixing hoppers, 4 discharging hoppers, 5 chutes, 6 hot metal ladles, 7 stirrers and 8 windlasses.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make those skilled in the art better understand the technical solutions of the present invention.
As shown in fig. 1, the present invention provides an intelligent desulfurization system, which specifically comprises:
the blanking system is used for quantitatively blanking a desulfurizer into molten iron and comprises a mixing hopper 3, a blanking hopper 4 and a chute 5; the discharge hole of the mixing hopper 3 is connected with the feed inlet of the discharging hopper 4, and the discharge hole of the discharging hopper 4 is connected with the inlet of the chute 5; a material level sensor and a weighing sensor are arranged in the mixing hopper 3; a weighing sensor is arranged in the discharging hopper 4; a distance sensor is arranged on the lower edge of the chute 5; the mixing device also comprises a storage bin 1 and a storage bin 2, wherein discharge ports of the storage bin 1 and the storage bin 2 are connected with a feed port of a mixing hopper 3; and weighing sensors are arranged in the stock bin 1 and the stock bin 2. Between feed bin 1, feed bin 2 and the compounding fill 3, between compounding fill 3 and lower hopper 4 all be provided with electronic flap valve between lower hopper 4 and the chute 5. The chute is driven by the motor to move up and down, and can be close to the molten iron pipe to avoid the desulfurizer from spilling outside when the desulfurizer is put in.
The stirring system is used for stirring molten iron and comprises a stirrer and a winch for hoisting the stirrer; the stirrer comprises a rotating shaft and a blade fixed on the rotating shaft; the stirrer is driven by a motor, and an encoder is arranged on the winch; the device also comprises a liquid level radar for monitoring the liquid level height of the molten iron and the height of a nozzle of the molten iron tank, a depth camera for monitoring the deformation of the paddle and a temperature sensor for monitoring the temperature of the molten iron.
As shown in fig. 2, the present invention further provides a control method of an intelligent desulfurization system, for controlling the intelligent desulfurization system, including:
s1, obtaining the weight of molten iron to be desulfurized, and calculating the weight of a desulfurizing agent to be added.
The method for calculating the weight of the molten iron comprises the steps of obtaining the height of the liquid level of the molten iron and the height of a nozzle of a molten iron tank through a liquid level radar; subtracting the liquid level rigidity of molten iron from the height of a molten iron tank nozzle to obtain a fall, and subtracting the fall from the total height of the molten iron tank to obtain the depth of the molten iron in the molten iron tank; the weight of the molten iron is obtained by multiplying the depth of the molten iron by the cross-sectional area of the molten iron tank and then by the density of the molten iron.
The weight of the molten iron and the weight of the desulfurizer have a certain matching relationship, and the required weight of the desulfurizer can be calculated after the weight of the molten iron is known.
S2, calculating the depth of the molten iron, and calculating the submergence depth of the stirrer blade according to the depth of the molten iron.
The depth of the molten iron is also the height of the molten iron liquid level and the height of a molten iron tank nozzle obtained by a liquid level radar; and subtracting the liquid level rigidity of the molten iron from the height of the nozzle of the molten iron tank to obtain a fall, and subtracting the fall from the total height of the molten iron tank to obtain the depth of the molten iron in the molten iron tank. After the depth of the molten iron is known, the submergence depth of the paddle can be calculated accordingly, and generally, the submergence depth of the paddle is half of the depth of the molten iron.
And S3, calculating the rotating speed of the stirrer according to the abrasion condition and the temperature of the paddle.
Since the shape of the paddle is directly related to the kinetic energy generated by the rotation of the paddle, the driving force of the worn paddle and the unworn paddle on the molten iron is different at the same rotation speed, and therefore, the wear degree of the paddle needs to be calculated.
In the invention, the method for acquiring the abrasion condition of the blade comprises the following steps:
s31, modeling is carried out on the unworn blades to obtain point cloud coordinates;
s32, acquiring a real blade point cloud by using a depth camera;
s33, converting the point cloud of the worn blade and the point cloud of the real blade into the same coordinate system, leveling by taking the low plane as a placing plane, and aligning by taking the central axis of the rotating shaft and the central axis of one of the blades as a reference.
Leveling means that the lying plane of the model coincides with the XOY plane of the coordinate system. And the abrasion of the blade is from outside to inside, so that an L-shaped line formed by the central axis of the rotating shaft and the central axis of the blade is selected as a reference, and the abraded blade model are aligned and superposed.
And S34, removing point clouds overlapped by the coordinate points to obtain a wear model of the blade. And subtracting the worn model from the unworn model to obtain the worn shape of the blade so as to judge the worn state of the blade and adjust the rotating speed according to the worn state.
In order to achieve the same rotating speed of the molten iron, the rotating speed of the paddle is proportional to the degree of wear, i.e. the higher the paddle is worn, the faster the rotating speed is required.
And S4, placing the stirrer into the molten iron to stir according to the calculated rotating speed of the stirrer, wherein the submergence depth of the stirrer is the calculated submergence depth. The submergence depth of the agitator can be obtained by an encoder in the winch.
S5, adding a desulfurizing agent into the molten iron, and keeping the submergence depth and the rotating speed until the desulfurization is finished.
The desulfurizer needs to be prepared before the desulfurizer is added, the stock bin is weighed, and the required raw materials are put into the mixing hopper to be mixed into the desulfurizer.
Acquiring the weight of a desulfurizer in a mixing hopper, opening a discharge port of the mixing hopper to enable the desulfurizer to enter a discharging hopper, and closing the discharge port when the weight of the desulfurizer in the mixing hopper is reduced to be the target weight;
and acquiring the weight of the desulfurizer in the blanking hopper, starting the chute to descend after the weight in the blanking hopper reaches the target weight, stopping descending when the lower edge of the chute and the hot metal ladle reach a threshold value, and starting a discharge hole of the blanking hopper to carry out blanking.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. An intelligent desulfurization system, characterized by comprising:
the blanking system is used for quantitatively blanking a desulfurizer into molten iron and comprises a mixing hopper, a blanking hopper and a chute; the discharge port of the mixing hopper is connected with the feed port of the discharging hopper, and the discharge port of the discharging hopper is connected with the chute inlet; a material level sensor and a weighing sensor are arranged in the mixing hopper; a weighing sensor is arranged in the blanking hopper; a distance sensor is arranged on the lower edge of the chute;
the stirring system is used for stirring molten iron and comprises a stirrer and a winch for hoisting the stirrer; the stirrer comprises a rotating shaft and a blade fixed on the rotating shaft; the stirrer is driven by a motor, and an encoder is arranged on the winch; the device also comprises a liquid level radar for monitoring the liquid level height of the molten iron and the height of a nozzle of the molten iron tank, a depth camera for monitoring the deformation of the paddle and a temperature sensor for monitoring the temperature of the molten iron.
2. The intelligent desulfurization system of claim 1, characterized in that: and electric flap valves are arranged between the mixing hopper and the discharging hopper and between the discharging hopper and the chute.
3. The intelligent desulfurization system of claim 1, wherein: the material mixing device also comprises a plurality of material bins, and material outlet ports of the material bins are connected with material inlet ports of the material mixing hopper; and a weighing sensor is arranged in the stock bin.
4. The intelligent desulfurization system of claim 3, wherein: an electric flap valve is arranged between the storage bin and the mixing hopper.
5. A control method of an intelligent desulfurization system for controlling the intelligent desulfurization system according to any one of claims 1 to 4, characterized by comprising:
obtaining the weight of molten iron to be desulfurized, and calculating the weight of a desulfurizer to be added;
calculating the depth of molten iron, and calculating the submergence depth of the stirrer paddle according to the depth of the molten iron;
calculating the rotating speed of the stirrer according to the abrasion condition and the temperature of the blades;
putting a stirrer into molten iron, and stirring according to the calculated rotating speed of the stirrer, wherein the submergence depth of the stirrer is the calculated submergence depth;
and adding a desulfurizing agent into the molten iron, and keeping the submergence depth and the rotating speed.
6. The control method of the intelligent desulfurization system according to claim 5, characterized in that:
the method for calculating the weight of the molten iron comprises the steps of obtaining the height of the liquid level of the molten iron and the height of a nozzle of a molten iron tank through a liquid level radar; subtracting the liquid level rigidity of molten iron from the height of a molten iron tank nozzle to obtain a fall, and subtracting the fall from the total height of the molten iron tank to obtain the depth of the molten iron in the molten iron tank; the weight of the molten iron is obtained by multiplying the depth of the molten iron by the cross-sectional area of the molten iron tank and then by the density of the molten iron.
7. The method for controlling an intelligent desulfurization system according to claim 5, wherein the method for adding the desulfurizing agent to the molten iron comprises:
acquiring the weight of a desulfurizer in a mixing hopper, opening a discharge port of the mixing hopper to enable the desulfurizer to enter a discharging hopper, and closing the discharge port when the weight of the desulfurizer in the mixing hopper is reduced to be the target weight;
and acquiring the weight of the desulfurizer in the blanking hopper, starting the chute to descend after the weight in the blanking hopper reaches the target weight, stopping descending when the lower edge of the chute and the hot metal ladle reach a threshold value, and starting a discharge hole of the blanking hopper to carry out blanking.
8. The control method of the intelligent desulfurization system according to claim 5, wherein the blade wear condition is obtained by:
modeling the unworn blades to obtain point cloud coordinates;
acquiring a real blade point cloud by using a depth camera;
converting the point cloud of the worn blade and the point cloud of the real blade into the same coordinate system, leveling by taking a low plane as a placing plane, and aligning by taking the central axis of the rotating shaft and the central axis of one blade as a reference;
and removing the point cloud overlapped by the coordinate points to obtain a wear model of the blade.
9. The control method of the intelligent desulfurization system according to claim 5, wherein: the submergence depth of the paddle is half of the depth of molten iron.
10. The control method of the intelligent desulfurization system according to claim 5, characterized in that: the blade speed is proportional to the degree of wear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211448714.XA CN115786623A (en) | 2022-11-18 | 2022-11-18 | Intelligent desulfurization system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211448714.XA CN115786623A (en) | 2022-11-18 | 2022-11-18 | Intelligent desulfurization system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115786623A true CN115786623A (en) | 2023-03-14 |
Family
ID=85439000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211448714.XA Pending CN115786623A (en) | 2022-11-18 | 2022-11-18 | Intelligent desulfurization system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115786623A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004035934A (en) * | 2002-07-02 | 2004-02-05 | Jfe Steel Kk | Method for desulfurizing molten iron |
| CN113528750A (en) * | 2021-07-27 | 2021-10-22 | 湖南福华信息工程有限公司 | Automatic slag skimming system |
-
2022
- 2022-11-18 CN CN202211448714.XA patent/CN115786623A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004035934A (en) * | 2002-07-02 | 2004-02-05 | Jfe Steel Kk | Method for desulfurizing molten iron |
| CN113528750A (en) * | 2021-07-27 | 2021-10-22 | 湖南福华信息工程有限公司 | Automatic slag skimming system |
Non-Patent Citations (2)
| Title |
|---|
| 张愉等: "铁水脱硫机械搅拌法一键脱硫技术", 冶金设备, no. 208, pages 112 - 114 * |
| 饶锡新等: "机械零件磨损量的反求工程分析方法研究", 机械设计与研究, vol. 23, no. 5, pages 54 - 58 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108588318B (en) | Molten iron mechanical stirring efficient low-consume sulfur method | |
| CN109666772A (en) | Molten iron KR stirring desulphurization method based on image recognition | |
| CN103361482B (en) | Vanadium extraction leaching device and vanadium extraction leaching method | |
| CN109918834B (en) | Design method of molten iron KR desulfurization stirrer | |
| CN213260146U (en) | Equipment for preparing zinc-aluminum-containing spinel aluminum silicon carbide carbon brick for molten iron ladle | |
| CN115786623A (en) | Intelligent desulfurization system and control method | |
| CN101532073A (en) | A desulfurizing process | |
| CN212504961U (en) | Accurate adjustment composition device behind converter stove | |
| CN205340717U (en) | A material unloading agitating unit for on glass production line | |
| CN202869264U (en) | Full-automatic weighing charging system | |
| CN207681450U (en) | Feeding device is weighed before a kind of casting furnace | |
| CN109504819A (en) | Method for improving KR desulfurization efficiency | |
| CN212409360U (en) | Accurate device that adds of raw materials for active limestone production | |
| CN111748668B (en) | Collaborative optimization design method for molten iron KR stirring desulfurization device and stirring process | |
| CN211159661U (en) | Organic garbage thermal cracking reaction device | |
| CN118147386A (en) | Stirring device and stirring control method | |
| CN204816292U (en) | A device that is used for sulfating roast sediment and sulfuric acid solution stirring to mix | |
| CN214810404U (en) | Preparation of pulpiness medicament, addition system | |
| CN211663922U (en) | Molybdenum oxide proportioning bin for preventing particle segregation | |
| CN108486307A (en) | A kind of converter dust-removing gray iron recovery system and method based on KR desulfurization station | |
| CN219400015U (en) | Automatic mixing device for titanium powder | |
| CN115029510B (en) | Desulfurization method based on dynamic parameter adjustment during service life of KR stirring paddle | |
| CN214263883U (en) | Continuous casting stuffing sand quantitative feeding system | |
| CN203530400U (en) | Batching plant of antimony smelting reflecting furnace | |
| CN211870817U (en) | Overhead traveling crane feeding system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |