CN112501377A - Method and system for detecting content abnormality of converter steelmaking slag - Google Patents
Method and system for detecting content abnormality of converter steelmaking slag Download PDFInfo
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- CN112501377A CN112501377A CN202011281976.2A CN202011281976A CN112501377A CN 112501377 A CN112501377 A CN 112501377A CN 202011281976 A CN202011281976 A CN 202011281976A CN 112501377 A CN112501377 A CN 112501377A
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- slag
- content
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- tapping
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4673—Measuring and sampling devices
Abstract
The invention relates to a method and a system for detecting the content abnormality of converter steelmaking slag, wherein the method comprises the following steps: s1: collecting steelmaking operation information in real time, wherein the steelmaking operation information comprises a buggy ladle position, a converter inclination angle and a steel flow image; s2: and calculating the slag content according to the steelmaking operation information, and alarming and carrying out corresponding operation according to the size relation between the slag content and the abnormal threshold value. The invention monitors the tapping process of the converter and reduces the slag discharge to the maximum extent through the automatic matching with the sliding plate slag stopping device.
Description
Technical Field
The invention relates to the technical field of steel making, in particular to a converter steel-making slag content abnormity detection method and system.
Background
In the converter steelmaking process, steel slag floats on the upper part of molten steel, and if a large amount of oxides and impurities in the steel slag are mixed into the molten steel, inclusions such as rephosphorization, alumina and the like of the molten steel are easily generated, and the purity of the molten steel is influenced. Criteria for effective slag detection include: less slag, less deoxidizer and alloy, less rephosphorization, long service life of refractory material, improved molten steel desulfurization, more accurate molten steel components, etc. At present, the slag discharging judgment is still judged and operated by an operator according to the colors of molten steel and slag, so that the operator needs to have certain working experience, and the method has great subjectivity. And the slag is difficult to judge visually at the initial stage of the steel tapping hole, and the judgment of operators is influenced due to the severe field environment, so that the problem of carrying a large amount of slag is caused, the yield is influenced, and the quality of steel grades is influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a method and a system for detecting the content abnormality of the converter steelmaking slag.
The specific scheme is as follows:
a method for detecting the content abnormality of converter steelmaking slag comprises the following steps:
s1: collecting steelmaking operation information in real time, wherein the steelmaking operation information comprises a buggy ladle position, a converter inclination angle and a steel flow image;
s2: and calculating the slag content according to the steelmaking operation information, and alarming and carrying out corresponding operation according to the size relation between the slag content and the abnormal threshold value.
Further, the alarm condition includes:
in the early stage and the middle stage of tapping, if the slag content is greater than a first abnormal threshold value, generating a slag inclusion and furnace falling alarm signal to remind an operator to perform furnace tilting operation and reduce the slag falling amount;
and in the later period of tapping, if the slag content is greater than a second abnormal threshold value, generating a slag blocking and furnace lifting alarm signal to remind an operator to lift the furnace and block slag, and automatically controlling the sliding plate slag blocking device to block slag to finish tapping.
Further, the method also comprises the step of S3: and storing the calculated slag content in a steel state database for statistical analysis of the steel state and judgment of abnormal reasons.
A converter steelmaking slag content anomaly detection system comprises: the system comprises a thermal infrared imager device, a laser distance measuring device, a tilting angle detector device, a slag discharge analysis model, an alarm unit and a sliding plate slag stopping device;
the thermal infrared imager device is used for acquiring a steel flow image;
the laser ranging device is used for acquiring the position of the buggy ladle;
the tilting angle detector device is used for acquiring the tilting angle of the converter;
the slag discharge analysis device is used for calculating the slag content according to the steelmaking operation information and sending a corresponding alarm signal to the alarm unit according to the size relation between the slag content and the abnormal threshold value;
the sliding plate slag stopping device is used for slag stopping treatment.
Further, the alarm signal sent by the slag tapping analysis model comprises:
in the early stage and the middle stage of tapping, if the slag content is greater than a first abnormal threshold value, generating a slag inclusion and furnace falling alarm signal to remind an operator to perform furnace tilting operation and reduce the slag falling amount;
and in the later period of tapping, if the slag content is greater than a second abnormal threshold value, generating a slag blocking and furnace lifting alarm signal to remind an operator to lift the furnace and block slag, and automatically controlling the sliding plate slag blocking device to block slag to finish tapping.
Further, the system also comprises a display unit used for displaying alarm information.
Further, the slag discharge analysis device also comprises a device for storing the calculated slag content in a steel state database for statistical analysis and abnormal reason judgment of the steel state.
Furthermore, the thermal infrared imager device is arranged at a position where the steel stream can be shot on site, the distance between the thermal infrared imager device and the steel stream is more than 20 meters, and the working temperature of the thermal infrared imager device is ensured to be-10-50 ℃ through the protective cover and the compressed air device.
By adopting the technical scheme, the invention provides a set of new slag discharge detection system to replace manual operation for slag discharge judgment and automatic slag stopping, and replace human eyes to observe the color of the steel flow to judge the tapping finish time, thereby helping users to improve the cleanliness of molten steel, control molten steel rephosphorization, stabilize the thickness of the slag layer in the steel ladle, reduce the consumption of additives, further providing good working conditions for molten steel refining, and saving the steel-making cost and the personnel cost. The tapping process of the converter is monitored, and the tapping amount is reduced to the maximum extent through automatic matching with the sliding plate slag stopping device.
Drawings
Fig. 1 is a system configuration diagram according to an embodiment of the present invention.
FIG. 2 is a flow chart of a method according to an embodiment of the present invention.
Detailed Description
The invention is further illustrated by the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures.
The invention will now be further described with reference to the accompanying drawings and detailed description.
The embodiment of the invention provides a system and a method for detecting content abnormality of converter steelmaking slag, as shown in figure 1, the system comprises: the device comprises a thermal infrared imager device, a laser distance measuring device, a tilting angle detector device, a slag discharge analysis model, an alarm unit and a sliding plate slag stopping device.
The thermal infrared imager device is used for collecting the steel flow image.
The infrared thermal imager device adopts a high-speed and high-resolution focal plane imaging system, has clear images, is favorable for quantitative analysis, and avoids the defects that pyroelectric and other types of far infrared detectors have poor image quality and are not favorable for quantitative analysis. The thermal infrared imager is used for collecting a steel flow image, and based on the characteristic that steel slag and steel flow on the infrared image show different colors, the steel slag and the steel flow are subjected to feature extraction and image analysis subsequently, so that information such as the appearance moment of the steel slag, the proportion of the steel slag in the steel flow and the like can be obtained.
The thermal infrared imager device is arranged at a position where the steel flow can be shot on site, the distance between the thermal infrared imager device and the steel flow is at least 20 meters, and the working temperature of the thermal infrared imager device is guaranteed to be-10-50 ℃ through the protective cover and the compressed air device.
The laser ranging device is used for collecting the position of the buggy ladle so as to ensure that the buggy ladle accurately enters the furnace and is connected with the steel position.
The tilting angle detector device is used for collecting the tilting angle of the converter.
And the slag tapping analysis model receives the steel-making operation information of the steel flow image, the ladle car position and the converter inclination angle, which are acquired and transmitted by the thermal infrared imager device, the laser ranging device and the tilting angle detector device, calculates the slag content in the steel after analyzing and processing the steel-making operation information, and transmits a corresponding alarm signal to the alarm unit according to the size relation between the slag content and the abnormal threshold value.
The alarm signal sent by the slag analysis model comprises:
(1) in the early stage and the middle stage of tapping, if the slag content is greater than a first abnormal threshold value, a slag inclusion and furnace falling alarm signal is generated to remind an operator to perform furnace tilting operation and reduce the slag falling amount.
(2) And in the later period of tapping, if the slag content is greater than a second abnormal threshold value, generating a slag blocking and furnace lifting alarm signal to remind an operator to lift the furnace and block slag, and automatically controlling the sliding plate slag blocking device to block slag to finish tapping.
The alarm unit may be any form of audible and visual alarm, and is not limited herein.
Further, the system in this embodiment further includes a display unit for displaying alarm information. Specifically, the adopted display unit is an HMI (human machine interface).
In addition, the slag tapping analysis device also comprises a device for storing the calculated slag content in a steel state database, and the device is used for carrying out statistical analysis and abnormal reason judgment on the steel state so as to give prompt suggestions for converter operation, maintenance and the like.
As shown in FIG. 2, the method for detecting the content abnormality of the steel-making slag of the converter comprises the following steps:
s1: and collecting steelmaking operation information in real time, wherein the steelmaking operation information comprises a buggy ladle position, a converter inclination angle and a steel flow image.
S2: and calculating the slag content according to the steelmaking operation information, and alarming and carrying out corresponding operation according to the size relation between the slag content and the abnormal threshold value.
S3: and storing the calculated slag content in a steel state database for statistical analysis of the steel state and judgment of abnormal reasons.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A method for detecting the content abnormality of converter steelmaking slag is characterized by comprising the following steps:
s1: collecting steelmaking operation information in real time, wherein the steelmaking operation information comprises a buggy ladle position, a converter inclination angle and a steel flow image;
s2: and calculating the slag content according to the steelmaking operation information, and alarming and carrying out corresponding operation according to the size relation between the slag content and the abnormal threshold value.
2. The method for detecting the abnormality in the content of steel-making slag of a converter according to claim 1, characterized in that: the alarm condition includes:
in the early stage and the middle stage of tapping, if the slag content is greater than a first abnormal threshold value, generating a slag inclusion and furnace falling alarm signal to remind an operator to perform furnace tilting operation and reduce the slag falling amount;
and in the later period of tapping, if the slag content is greater than a second abnormal threshold value, generating a slag blocking and furnace lifting alarm signal to remind an operator to lift the furnace and block slag, and automatically controlling the sliding plate slag blocking device to block slag to finish tapping.
3. The method for detecting the abnormality in the content of steel-making slag of a converter according to claim 1, characterized in that: further comprising S3: and storing the calculated slag content in a steel state database for statistical analysis of the steel state and judgment of abnormal reasons.
4. A converter steelmaking slag content anomaly detection system is characterized by comprising: the system comprises a thermal infrared imager device, a laser distance measuring device, a tilting angle detector device, a slag discharge analysis model, an alarm unit and a sliding plate slag stopping device;
the thermal infrared imager device is used for acquiring a steel flow image;
the laser ranging device is used for acquiring the position of the buggy ladle;
the tilting angle detector device is used for acquiring the tilting angle of the converter;
the slag discharge analysis device is used for calculating the slag content according to the steelmaking operation information and sending a corresponding alarm signal to the alarm unit according to the size relation between the slag content and the abnormal threshold value;
the sliding plate slag stopping device is used for slag stopping treatment.
5. The system for detecting abnormality in the content of steel-making slag of a converter according to claim 4, characterized in that: the alarm signal sent by the slag analysis model comprises:
in the early stage and the middle stage of tapping, if the slag content is greater than a first abnormal threshold value, generating a slag inclusion and furnace falling alarm signal to remind an operator to perform furnace tilting operation and reduce the slag falling amount;
and in the later period of tapping, if the slag content is greater than a second abnormal threshold value, generating a slag blocking and furnace lifting alarm signal to remind an operator to lift the furnace and block slag, and automatically controlling the sliding plate slag blocking device to block slag to finish tapping.
6. The system for detecting abnormality in the content of steel-making slag of a converter according to claim 4, characterized in that: the alarm device also comprises a display unit for displaying the alarm information.
7. The system for detecting abnormality in the content of steel-making slag of a converter according to claim 4, characterized in that: the slag tapping analysis device also comprises a slag storage device which stores the calculated slag content in a steel state database and is used for statistical analysis and abnormal reason judgment of the steel state.
8. The system for detecting abnormality in the content of steel-making slag of a converter according to claim 4, characterized in that: the thermal infrared imager device is arranged at a position where the steel stream can be shot on site, the distance between the thermal infrared imager device and the steel stream is more than 20 meters, and the working temperature of the thermal infrared imager device is ensured to be-10-50 ℃ through the protective cover and the compressed air device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011281976.2A CN112501377A (en) | 2020-11-17 | 2020-11-17 | Method and system for detecting content abnormality of converter steelmaking slag |
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| CN202011281976.2A CN112501377A (en) | 2020-11-17 | 2020-11-17 | Method and system for detecting content abnormality of converter steelmaking slag |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113093204A (en) * | 2021-04-02 | 2021-07-09 | 中冶南方工程技术有限公司 | Vehicle position measuring method and system based on multiple distance measuring instruments |
| CN113088622A (en) * | 2021-03-19 | 2021-07-09 | 中冶南方工程技术有限公司 | Automatic furnace pressing control method and system in tapping process |
| CN113088615A (en) * | 2021-03-19 | 2021-07-09 | 中冶南方工程技术有限公司 | Converter tapping control method and system based on video identification technology |
| CN113380334A (en) * | 2021-07-03 | 2021-09-10 | 内蒙古高等级公路建设开发有限责任公司 | Rapid digestion method and system for steel slag free calcium oxide |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113088622A (en) * | 2021-03-19 | 2021-07-09 | 中冶南方工程技术有限公司 | Automatic furnace pressing control method and system in tapping process |
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| CN113093204A (en) * | 2021-04-02 | 2021-07-09 | 中冶南方工程技术有限公司 | Vehicle position measuring method and system based on multiple distance measuring instruments |
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| CN113380334A (en) * | 2021-07-03 | 2021-09-10 | 内蒙古高等级公路建设开发有限责任公司 | Rapid digestion method and system for steel slag free calcium oxide |
| CN113380334B (en) * | 2021-07-03 | 2024-01-12 | 河津市康庄新材料有限公司 | Rapid digestion method and system for free calcium oxide of steel slag |
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