CN119876523A - Method for cleaning steel slag under converter - Google Patents

Method for cleaning steel slag under converter Download PDF

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Publication number
CN119876523A
CN119876523A CN202510303780.5A CN202510303780A CN119876523A CN 119876523 A CN119876523 A CN 119876523A CN 202510303780 A CN202510303780 A CN 202510303780A CN 119876523 A CN119876523 A CN 119876523A
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China
Prior art keywords
slag
pit
steel
under
slag pit
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Pending
Application number
CN202510303780.5A
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Chinese (zh)
Inventor
张永亮
翟乃波
李海洋
绳波
吕英军
孟宪永
孟俊山
李军辉
谢新刚
李超
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Mount Taishan Stainless Steel Co ltd
Shandong Taishan Steel Group
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Mount Taishan Stainless Steel Co ltd
Shandong Taishan Steel Group
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Application filed by Mount Taishan Stainless Steel Co ltd, Shandong Taishan Steel Group filed Critical Mount Taishan Stainless Steel Co ltd
Priority to CN202510303780.5A priority Critical patent/CN119876523A/en
Publication of CN119876523A publication Critical patent/CN119876523A/en
Pending legal-status Critical Current

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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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

本发明涉及一种转炉炉下钢渣清理方法，包括以下清理步骤：在炉下道轨的内侧制作位于接渣位置的第一渣坑和位于出钢位置的第二渣坑；出钢时，钢包车静止于第二渣坑的上方，利用第二渣坑承接钢水倾倒时迸溅的钢水，在钢包穿钢泄漏时，利用第二渣坑承接钢水。基于中小型转炉炉下空间及基础狭窄的情况，在转炉炉下两侧出钢位置和接渣位置制作用于钢渣临时存放的第一渣坑及用于钢水事故的第二渣坑，操作渣车在推渣过程中，把钢渣先推至临时存放坑，再通过装载机来集中进行铲运到渣跨焖渣池，从而降低渣车运载负荷，达到稳定生产的目的。The present invention relates to a method for cleaning steel slag under a converter, comprising the following cleaning steps: a first slag pit located at a slag receiving position and a second slag pit located at a steel tapping position are made on the inner side of a rail under the furnace; when tapping steel, the ladle car is stationary above the second slag pit, and the second slag pit is used to receive the molten steel splashed when the molten steel is poured, and the second slag pit is used to receive the molten steel when the ladle leaks through the steel. Based on the narrow space and foundation under small and medium-sized converters, a first slag pit for temporary storage of steel slag and a second slag pit for steel molten accidents are made at the steel tapping position and slag receiving position on both sides of the converter. When the slag car is operated to push the slag, the steel slag is first pushed to the temporary storage pit, and then the loader is used to shovel and transport it to the slag span simmering pool, thereby reducing the carrying load of the slag car and achieving the purpose of stable production.

Description

Method for cleaning steel slag under converter
Technical Field
The invention relates to the technical field of molten steel smelting, in particular to a method for cleaning steel slag under a converter.
Background
The converter is one type of steelmaking furnace. Generally refers to a tiltable cylindrical oxygen-blown steel vessel. The furnace body is cylindrical and is supported on a horizontal shaft bracket and can rotate. And is also used for steelmaking.
The converter is a core facility for smelting molten steel, about 10% of steel slag can be produced in the smelting process, and the steel slag is poured into a special slag basin under the converter and transported to a steel slag treatment plant for secondary treatment and recycling. As is known, the basic track of the steel ladle track below a small and medium-sized 60-ton converter is small, the converter is easily splashed due to the influence of factors such as molten iron coefficient and scrap steel, a large amount of high Wen Zhazi is scattered on the lower slag track of the converter, the double-car production process frequently walks back and forth, the safe operation of the double-car under the converter is seriously endangered, the slag scraping resistance through the slag ladle car is high, the damage is easy, dust is serious, and if a ladle penetrating leakage accident occurs, the ladle car wheels and the track can be cast, so that the conditions of treatment and difficulty are caused.
In order to solve the problems, the inventor provides a method for cleaning the steel slag under the converter, and the problem of cleaning the steel slag under the converter is effectively solved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for cleaning the steel slag under the converter, which effectively solves the problem of cleaning the steel slag under the converter and also avoids the adverse effect of molten steel on wheels and rails when the steel ladle passes through the ladle to leak.
The invention provides a method for cleaning steel slag under a converter, which is realized by the following technical scheme:
(1) Manufacturing a first slag pit positioned at a slag receiving position and a second slag pit positioned at a tapping position on the inner side of a lower rail of the furnace;
(2) When tapping, the ladle car is stationary above the second slag pit, the second slag pit is used for receiving molten steel splashed when molten steel is poured, so that the influence of the molten steel splashed when molten steel is poured on the ladle car and the slag car is reduced, when the steel is leaked through the ladle, the second slag pit is used for receiving molten steel, so that casting of the leaked molten steel on wheels and rails of the ladle car is avoided, the processing difficulty after accidents is greatly reduced, the accident processing time is shortened to the greatest extent, and the continuous production is ensured;
(3) Pouring the steel slag into a ladle car which is static above the first slag pit or directly pouring the steel slag into the first slag pit when the ladle car does not work, and conveying the steel slag out by using the working gap of the ladle car, wherein the steel slag is directly poured into the first slag pit when the ladle car conveys molten steel, and the first slag pit is used for pre-storing the steel slag, so that the cleaning rhythm of the steel slag is effectively relieved, and the stable operation of production is ensured;
(4) In the moving process of the slag ladle car, the slag under the converter is scraped to the first slag pit by the slag scraper arranged on the slag ladle car, so that the slag scraping distance of the slag scraper is greatly shortened, the travelling resistance of the slag ladle car is greatly reduced, the stability of slag transportation is improved, and the safety production is ensured;
(5) When the volume of the steel slag in the first slag pit is greater than or equal to 4/5 of the volume of the first slag pit, a loader is used for cleaning the first slag pit, when the furnace is stopped, steel slag in the second slag pit is cleaned, the loader is used for intensively shoveling the steel slag in the first slag pit to a slag-span stewing slag pool, so that the carrying load of a slag ladle car is reduced, the purpose of stable production is achieved, and when the furnace is stopped, the steel slag in the second slag pit is cleaned, normal production is not affected, and meanwhile, the use function of the second slag pit is ensured.
Preferably, the pit bottoms and the pit side walls of the first slag pit and the second slag pit are respectively provided with a steel plate with the thickness of 22-30 mm, and the steel plates are provided with embedded bars extending into the rail installation foundation in a penetrating manner and welded with the steel plates. According to the optimization scheme, the steel plate with the thickness of 22-30 mm is arranged in the slag pit, so that steel slag or molten steel in the slag pit is cleaned conveniently, the steel slag and the molten steel are prevented from directly contacting with a rail installation foundation, pollution to underground water is avoided, the steel plate is fixed through the planted bars, the stability of the steel plate is improved, and displacement of the steel plate is avoided.
Preferably, one end of the bar planting far away from the rail installation foundation is flush with the steel plate, and a welding groove is formed in the steel plate. This optimization scheme will plant muscle and steel sheet setting to the parallel and level, avoids there being protruding part to cause the hindrance to the scraper bowl of loader, makes the slag clearance more thorough, also avoids the fixed of steel sheet to be destroyed by the loader, makes the welding more firm through setting up the groove, and it is more reliable to plant the fixed of muscle to the steel sheet.
Preferably, the depth of the first slag pit is 800-900 mm, the included angle between the pit side walls of the two ends of the first slag pit along the extending direction of the lower track of the furnace and the vertical plane is 45-50 degrees, and the size of the upper opening of the first slag pit is larger than that of the lower opening.
Preferably, the depth of the second slag pit is 500-600 mm, the included angle between the pit side walls of the second slag pit and the vertical plane along the two ends of the extension direction of the lower track of the furnace is 45-50 degrees, and the size of the upper opening of the second slag pit is larger than that of the lower opening. According to the optimized scheme, the depth of the first slag pit and the depth of the second slag pit are set, temporary storage requirements of steel slag and accident leakage molten steel are met respectively, the side walls of the front end and the rear end of the first slag pit and the side walls of the rear end of the second slag pit are obliquely arranged, the size of the upper opening of the second slag pit is set to be larger than that of the lower opening, and the loader is conveniently used for cleaning.
Preferably, the upper mouth sizes of the first slag pit and the second slag pit are 2500mm×5000mm. The size of this optimization scheme sets up, avoids causing the influence to the track under the stove, makes things convenient for the loading shovel business turn over simultaneously.
Preferably, the gap between the steel plate and the rail installation foundation and the gap between the steel plate and the ground foundation are poured in a grouting mode. According to the optimization scheme, the gap between the steel plate and the foundation is poured in a grouting mode, and the stability of fixing the steel plate is further improved.
The beneficial effects of the invention are as follows:
Based on the condition that the space and the foundation under the middle and small-sized converter are narrow, a first slag pit for temporarily storing steel slag and a second slag pit for molten steel accidents are manufactured at the tapping position and the slag receiving position at the two sides under the converter, a slag car is operated to push the steel slag to the temporary storage pit in the slag pushing process, and then shoveled and transported to a slag-span stewing slag pool in a concentrated manner through a loader, so that the carrying load of the slag car is reduced, the purpose of stable production is achieved, the related structure is simple, the cleaning is convenient and quick, the steel slag does not exist in the area under the whole converter, the clean production of the converter and the safe and smooth operation of double cars under the converter are realized, the labor intensity of workers is reduced, the maintenance cost and the resources are saved, and effective guarantee is provided.
Drawings
FIG. 1 is a schematic diagram of the present invention;
The figure shows:
1.2 parts of converter, 3 parts of slag ladle car, 4 parts of first slag pit, 5 parts of second slag pit and 5 parts of ladle car.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
As shown in fig. 1, the invention provides a method for cleaning steel slag under a converter, which comprises the following cleaning steps:
(1) A first slag pit 3 positioned at a slag receiving position and a second slag pit 4 positioned at a tapping position are manufactured on the inner side of a lower rail of the converter 1;
(2) When tapping, the buggy ladle 5 is static above the second slag pit 4, the second slag pit 4 is used for receiving the splashed molten steel when the molten steel is poured, so that the influence of the steel slag formed by the splashed molten steel on the movement of the buggy ladle 5 and the buggy ladle 2 is reduced, when the steel is leaked through the steel ladle, the second slag pit 4 is used for receiving the molten steel, so that the leaked molten steel is prevented from casting the wheels and the rails of the buggy ladle 5, the processing difficulty after accidents is greatly reduced, the accident processing time is shortened to the greatest extent, and the continuous production is ensured;
(3) When the ladle car 5 does not work, the steel slag is poured into the ladle car 2 which is static above the first slag pit 3, the steel slag is transported out by the ladle car 2 by utilizing the working gap of the ladle car 5, and when the ladle car 5 transports molten steel, the steel slag is directly poured into the first slag pit 3, and the first slag pit 3 is utilized to pre-store the steel slag, so that the cleaning rhythm of the steel slag is effectively relieved, and the stable operation of production is ensured;
(4) During the moving process of the slag ladle car 2, the slag under the converter is scraped to the first slag pit 3 by a slag scraper arranged on the slag ladle car 2, so that the slag scraping distance of the slag scraper is greatly shortened, the running resistance of the slag ladle car 2 is greatly reduced, the slag conveying stability is improved, and the safety production is ensured;
(5) When the volume of the steel slag in the first slag pit 3 is greater than or equal to 4/5 of the volume of the first slag pit 3, a loader is used for cleaning the first slag pit 3, when the furnace is stopped, steel slag in the second slag pit 4 is cleaned, the loader is used for intensively shoveling the steel slag in the first slag pit 3 to a slag-span stewing slag pool, so that the carrying load of a slag ladle car 2 is reduced, the purpose of stable production is achieved, and when the furnace is stopped, the steel slag in the second slag pit 4 is cleaned, normal production is not affected, and meanwhile, the use function of the second slag pit 4 is ensured.
The pit bottoms and the pit side walls of the first slag pit 3 and the second slag pit 4 are respectively provided with a steel plate with the thickness of 22-30 mm, and the steel plates are provided with embedded bars extending into the rail installation foundation in a penetrating manner and welded with the steel plates. According to the optimization scheme, the steel plate with the thickness of 22-30 mm is arranged in the slag pit, so that steel slag or molten steel in the slag pit is cleaned conveniently, the steel slag and the molten steel are prevented from directly contacting with a rail installation foundation, pollution to underground water is avoided, the steel plate is fixed through the planted bars, the stability of the steel plate is improved, and displacement of the steel plate is avoided.
One end of the embedded bar, which is far away from the rail installation foundation, is flush with the steel plate, and a welding groove is formed in the steel plate. This optimization scheme will plant muscle and steel sheet setting to the parallel and level, avoids there being protruding part to cause the hindrance to the scraper bowl of loader, makes the slag clearance more thorough, also avoids the fixed of steel sheet to be destroyed by the loader, makes the welding more firm through setting up the groove, and it is more reliable to plant the fixed of muscle to the steel sheet.
The depth of the first slag pit 3 is 800-900 mm, the included angle between the pit side walls of the two ends of the first slag pit 3 along the extending direction of the lower track of the furnace and the vertical plane is 45-50 degrees, and the size of the upper opening of the first slag pit 3 is larger than that of the lower opening.
The depth of the second slag pit 4 is 500-600 mm, the included angle between the pit side walls of the two ends of the second slag pit 4 along the extending direction of the lower track of the furnace and the vertical plane is 45-50 degrees, and the size of the upper opening of the second slag pit 4 is larger than that of the lower opening. The depth setting of the first slag pit 3 and the second slag pit 4 of this optimization scheme has satisfied the requirement of keeping in of slag and accident leakage molten steel respectively, sets up the lateral wall at both ends slope around with the first slag pit 3 and the second slag pit 4 to set up the upper shed size of the second slag pit 4 to be greater than the lower shed size, conveniently utilize the loader to clear up.
The upper opening sizes of the first slag pit 3 and the second slag pit 4 are 2500mm multiplied by 5000mm. The size of this optimization scheme sets up, avoids causing the influence to the track under the stove, makes things convenient for the loading shovel business turn over simultaneously.
And grouting and pouring gaps between the steel plate and the track installation foundation and gaps between the steel plate and the ground foundation. According to the optimization scheme, the gap between the steel plate and the foundation is poured in a grouting mode, and the stability of fixing the steel plate is further improved.
It should be understood that the foregoing embodiments and the accompanying drawings are only for illustrating the technical aspects of the present invention, but not for limiting the present invention, and that the present invention is not limited to the preferred embodiments, and that the changes, modifications, additions or substitutions made by those skilled in the art within the spirit and scope of the present invention will not depart from the spirit and scope of the present invention as defined in the appended claims.

Claims (7)

1.一种转炉炉下钢渣清理方法，其特征在于，包括以下清理步骤：1. A method for cleaning slag under a converter, characterized in that it comprises the following cleaning steps: (1)在炉下道轨的内侧制作位于接渣位置的第一渣坑和位于出钢位置的第二渣坑；(1) A first slag pit located at the slag receiving position and a second slag pit located at the steel tapping position are made on the inner side of the rail under the furnace; (2)出钢时，钢包车静止于第二渣坑的上方，利用第二渣坑承接钢水倾倒时迸溅的钢水，在钢包穿钢泄漏时，利用第二渣坑承接钢水；(2) When tapping steel, the ladle car is stationary above the second slag pit, and the second slag pit is used to receive the molten steel splashed when the molten steel is poured. When the ladle leaks, the second slag pit is used to receive the molten steel; (3)出渣时，将钢渣倒入静止于第一渣坑上方的渣包车或者将钢渣直接倒入第一渣坑；在钢包车不进行工作时，将钢渣倒入静止于第一渣坑上方的渣包车中，利用钢包车的工作间隙，渣包车将钢渣运出，在钢包车运输钢水时，将钢渣直接倒入第一渣坑，利用第一渣坑对钢渣进行预存放；(3) When discharging slag, pour the slag into a slag ladle car stationary above the first slag pit or directly pour the slag into the first slag pit; when the ladle car is not working, pour the slag into the slag ladle car stationary above the first slag pit, and use the working interval of the ladle car to transport the slag out. When the ladle car is transporting molten steel, pour the slag directly into the first slag pit, and use the first slag pit to pre-store the slag; (4)在渣包车移动过程中，通过渣包车上安装的刮渣器将转炉正下方的钢渣刮至第一渣坑；(4) During the movement of the slag ladle car, the slag directly below the converter is scraped to the first slag pit by a slag scraper installed on the slag ladle car; (5)在第一渣坑内的钢渣体积大于或等于第一渣坑容积的4/5时，使用装载机对第一渣坑进行清理，在停炉时，对第二渣坑内的钢渣进行清理；通过装载机集中将第一渣坑中的钢渣铲运到渣跨焖渣池，在停炉时，对第二渣坑内的钢渣进行清理。(5) When the volume of steel slag in the first slag pit is greater than or equal to 4/5 of the volume of the first slag pit, use a loader to clean the first slag pit, and when the furnace is shut down, clean the steel slag in the second slag pit; use the loader to shovel the steel slag in the first slag pit to the slag span slag pool, and when the furnace is shut down, clean the steel slag in the second slag pit. 2.根据权利要求1所述的一种转炉炉下钢渣清理方法，其特征在于：第一渣坑和第二渣坑的坑底和坑侧壁均设有厚度为22～30mm的钢板，钢板上穿设有伸至道轨安装基础内的植筋，植筋与钢板焊接。2. A method for cleaning slag under a converter according to claim 1, characterized in that the bottom and side walls of the first slag pit and the second slag pit are provided with steel plates with a thickness of 22 to 30 mm, and embedded steel bars extending into the rail installation foundation are penetrated through the steel plates, and the embedded steel bars are welded to the steel plates. 3.根据权利要求2所述的一种转炉炉下钢渣清理方法，其特征在于：植筋远离道轨安装基础的一端与钢板平齐，且在钢板上开设有焊接坡口。3. A method for cleaning slag under a converter according to claim 2, characterized in that one end of the embedded reinforcement away from the rail installation foundation is flush with the steel plate, and a welding groove is opened on the steel plate. 4.根据权利要求3所述的一种转炉炉下钢渣清理方法，其特征在于：第一渣坑的深度为800～900mm，第一渣坑沿炉下道轨延伸方向两端的坑侧壁与竖直平面夹角为45°～50°，第一渣坑的上口尺寸大于下口尺寸。4. A method for cleaning slag under a converter according to claim 3, characterized in that: the depth of the first slag pit is 800-900 mm, the angles between the pit side walls at both ends of the first slag pit along the extension direction of the under-furnace rail and the vertical plane are 45°-50°, and the upper opening size of the first slag pit is larger than the lower opening size. 5.根据权利要求4所述的一种转炉炉下钢渣清理方法，其特征在于：第二渣坑的深度为500～600mm，第二渣坑沿炉下道轨延伸方向两端的坑侧壁与竖直平面夹角为45°～50°，第二渣坑的上口尺寸大于下口尺寸。5. A method for cleaning slag under a converter according to claim 4, characterized in that: the depth of the second slag pit is 500-600 mm, the angles between the pit side walls at both ends of the second slag pit along the extension direction of the under-furnace rail and the vertical plane are 45°-50°, and the upper opening size of the second slag pit is larger than the lower opening size. 6.根据权利要求5所述的一种转炉炉下钢渣清理方法，其特征在于：第一渣坑和第二渣坑的上口尺寸均为2500mm×5000mm。6. A method for cleaning slag under a converter according to claim 5, characterized in that the upper opening size of the first slag pit and the second slag pit are both 2500mm×5000mm. 7.根据权利要求3所述的一种转炉炉下钢渣清理方法，其特征在于：钢板与道轨安装基础之间的缝隙，以及钢板与地面基础之间的缝隙均进行灌浆浇筑。7. A method for cleaning slag under a converter according to claim 3, characterized in that the gap between the steel plate and the rail installation foundation, and the gap between the steel plate and the ground foundation are both grouting-casted.
CN202510303780.5A 2025-03-14 2025-03-14 Method for cleaning steel slag under converter Pending CN119876523A (en)

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CN202510303780.5A CN119876523A (en) 2025-03-14 2025-03-14 Method for cleaning steel slag under converter

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CN119876523A true CN119876523A (en) 2025-04-25

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