CN114410884B - Device for preventing steel scrap groove from sliding off during steel scrap adding of converter and using method - Google Patents
Device for preventing steel scrap groove from sliding off during steel scrap adding of converter and using method Download PDFInfo
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- CN114410884B CN114410884B CN202210070625.XA CN202210070625A CN114410884B CN 114410884 B CN114410884 B CN 114410884B CN 202210070625 A CN202210070625 A CN 202210070625A CN 114410884 B CN114410884 B CN 114410884B
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- scrap
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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
- C21C5/466—Charging device for converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention provides a device for reducing the sliding of a steel scrap groove during the process of adding steel scrap by a converter and a using method thereof. When the converter is used for smelting and adding the scrap steel, the supporting surface of the device is supported at the bottom of the scrap steel groove, so that sudden falling accidents of the scrap steel groove can be effectively reduced, and meanwhile, the process of adding the scrap steel can be effectively promoted through the vibration of the hydraulic vibration hammer, and the difficulty of adding the scrap steel is reduced; the method can effectively reduce the possibility of sliding of the steel scrap groove when the steel scrap is added into the converter, greatly improve the production safety and contribute to stable production. The device of the invention utilizes the existing device of the converter, does not need to reform other equipment of the converter except the device directly connected with the device, has the advantages of reliable structure, self-cleaning and the like, and has important practical significance for increasing the adding amount of the waste steel of the converter in iron and steel enterprises.
Description
Technical Field
The invention relates to the technical field of converter steelmaking, in particular to a device for preventing a steel scrap groove from sliding off when a converter adds steel scrap and a using method.
Background
The converter is the main equipment for domestic steel making production, the main raw materials for converter steel making are molten iron and scrap steel, wherein the scrap steel is generally added into the converter from the converter mouth by using a scrap steel groove. The basic process of adding the scrap steel in the converter comprises the following steps: firstly, a crown block is used for hoisting the scrap steel groove filled with the scrap steel to a converter platform, then the scrap steel groove extends into the converter from a converter mouth, a big hook hung on a hanging lug at the front end of the scrap steel groove is loosened, and finally a hanging ring at the tail part of the scrap steel groove is lifted, so that the scrap steel groove is in an inclined state, and the scrap steel slides into the converter due to the self gravity.
As the carbon emission can be effectively reduced by increasing the adding amount of the scrap steel, with the implementation of the national double-carbon strategy, more and more scrap steel needs to be recycled and smelted in the future, and the adding amount of the converter scrap steel also increases. The steel scrap raw material for converter steelmaking generally has two types of light scrap and heavy scrap, wherein the heavy scrap is a large steel plate or a steel billet, and the light scrap is a thin steel strip or a steel strip and the like and is in a fluffy state.
When the adding amount of the waste steel is small or the volume of heavy waste is small, only a small amount of hanging rings at the tail part of the waste steel groove are needed to be lifted, and the waste steel can be added into the converter when the inclination angle of the waste steel groove is small; when the adding amount of the waste steel is large or the waste is light and large in volume, more hanging rings at the tail part of the waste steel groove are required to be pulled upwards, and the waste steel can be added into the converter after a larger inclination angle is obtained. Because the deeper the scrap steel groove extends into the furnace mouth, the smaller the angle that the scrap steel groove can be inclined, and a larger inclination angle needs to be obtained, the common treatment method is as follows: stretch into the stove with the steel scrap groove as far as possible or steel scrap groove head leans on at the fire door edge, then upwards carry and draw steel scrap groove afterbody link, cooperate the rotation converter furnace shaft simultaneously, rock the steel scrap groove (steel scrap groove inclination is not higher better, and the fire door plane is perpendicular with the steel scrap groove, and the area that the steel scrap passed through from the fire door is the biggest, continues to carry and draw the steel scrap to pass through the area reduction after the steel scrap groove inclination exceeds this value), promotes the steel scrap landing to in the converter.
In doing so, the scrap box may suddenly slide off the lip of the spout because it extends into the furnace very little or only against the lip. The other situation is that when the converter mouth has a large amount of slag formed by splashing, the mouth is smaller, the difficulty of adding the steel scrap is larger, the steel scrap groove can lean against the slag, and the slag can suddenly fall under the heavy pressure of the steel scrap groove to cause the steel scrap groove to slide because the bonding force between the slag and the mouth is small. Therefore, the head of the waste steel tank is separated from the support of the furnace mouth, so that the waste steel instantly slides to the slag channel of the converter from the waste steel tank, the operation of adding the waste steel cannot be completed, and the problems of blockage of the slag channel of the converter, difficulty in cleaning and the like are caused.
Therefore, when the steel scrap is added into the converter by the conventional operation method, the steel scrap groove suddenly slides down, so that the slag channel is blocked by the steel scrap, and the like.
Disclosure of Invention
In view of the above problems in the prior art, the present invention aims to provide a device for preventing a steel scrap box from sliding down when a converter adds steel scrap and a use method thereof. The method can effectively reduce the possibility of sliding of the steel scrap groove when the steel scrap is added into the converter, greatly improve the production safety and contribute to stable production. The device of the invention utilizes the existing device of the converter, does not need to reform other equipment of the converter except the device directly connected with the device, has the advantages of reliable structure, self-cleaning and the like, and has important practical significance for increasing the adding amount of the waste steel of the converter in iron and steel enterprises.
The specific technical scheme of the invention is as follows:
the utility model provides a device of steel scrap groove landing when preventing converter from adding steel scrap, the device sets up on converter slag car, including holding surface, hydraulic stem and hydraulic vibratory hammer, hydraulic vibratory hammer connects in the hydraulic stem top, and hydraulic vibratory hammer all links to each other with the holding surface, the device is through setting up the motor drive in slag car below, and motor power uses the current electric power system of slag car.
In the device for preventing the steel scrap groove from sliding off when the steel scrap is added into the converter, the hydraulic rods and the hydraulic vibration hammers are the same in number.
In the device for preventing the scrap steel groove from sliding off when the scrap steel is added into the converter, the number of the hydraulic rods and the number of the hydraulic vibration hammers are 4.
In the device for preventing the scrap steel groove from slipping off when the scrap steel is added to the converter, the hydraulic rod is of a multi-stage structure, after the hydraulic rod is contracted, the height of the supporting surface is less than or equal to that of the existing slag pot of the slag car of the converter, and after the hydraulic rod extends out, the supporting surface can be completely attached to the bottom of the scrap steel groove.
In the device for preventing the steel scrap groove from sliding off when the steel scrap is added into the converter, the hydraulic vibration hammer above the hydraulic rod is mechanically connected with the electric hydraulic rod, and the hydraulic rod or the hydraulic vibration hammer can be damaged to replace any one of the hydraulic rod and the electric hydraulic rod.
In the device for preventing the scrap steel groove from sliding off when the converter adds the scrap steel, the drill rod is welded at the bottom of the supporting surface, and the size of the drill rod is matched with that of the hydraulic vibration hammer.
In the device for preventing the steel scrap groove from sliding off when the steel scrap is added into the converter, the drill rod insertion opening of the hydraulic vibration hammer is provided with the trumpet-shaped guide pipe, so that the drill rod can conveniently enter the hydraulic vibration hammer.
In the device for preventing the scrap steel groove from sliding off when the scrap steel is added into the converter, the two sides of the head of the supporting surface are provided with the hangers, the hangers are positioned at 1/5-1/4 of the total length of the supporting surface, the tail of the supporting surface is provided with the hanging ring, and the size of the hanging ring is matched with the existing overhead crane system of the converter.
In the device for preventing the scrap steel groove from sliding off when the converter adds the scrap steel, the front end of the supporting surface is provided with the telescopic head. Because the device is connected with the slag car, a large amount of slag splashes to the supporting surface of the device when the converter pours the slag, and the slag adhered to the supporting surface of the device can influence the using effect of the device, therefore, the self-cleaning of the supporting surface can be realized by arranging the telescopic head at the front end of the supporting surface. The telescopic head is driven by a motor, and the maximum extension length of the telescopic head is about 0.5-1 meter.
The method for preventing the scrap steel groove from sliding off when the converter adds the scrap steel adopts the device, and the specific method is as follows:
(a) Firstly, adjusting a hydraulic rod to a position vertical to the ground, and simultaneously adjusting the upper surface of a hydraulic vibration hammer to the same plane;
(b) Hanging lugs on two sides of a supporting surface by using a gantry large hook of the overhead travelling crane, hanging a tail hanging ring by using a small hook, and adjusting the positions of the large hook and the small hook to enable the supporting surface to be parallel to the ground;
(c) When the support surface is moved to be right above the hydraulic vibration hammer, the support surface is descended at a first speed, the position of the support surface is continuously adjusted at the same time, so that the drill rod at the bottom of the support surface simultaneously falls into the guide pipe of the hydraulic vibration hammer, and then the support surface is continuously descended at a second speed until the drill rod completely falls into the hydraulic vibration hammer;
(d) When the amount of the waste steel in the converter is larger, the device is moved to the position below the converter through the movement of the slag car, and the hydraulic rod is extended out until the supporting surface is supported at the bottom of the waste steel tank, so that the aim of preventing the waste steel tank from suddenly sliding is fulfilled;
(e) When the scrap steel groove is lifted to a normal position and the scrap steel still cannot enter the converter, starting 1-4 hydraulic vibration hammers, and promoting the scrap steel to enter the converter through the vibration of the hydraulic vibration hammers;
(f) After the waste steel is added, the hydraulic rod is contracted to the lowest point, and the slag car and the device are moved to normal positions.
The method for preventing the steel scrap groove from sliding off when the steel scrap is added in the converter further comprises the following steps: when the supporting surface needs to be replaced, the hanging lug and the hanging ring of the supporting surface are hung by the overhead travelling crane, and the supporting surface is taken away and replaced.
The method for preventing the steel scrap groove from sliding off when the steel scrap is added in the converter further comprises the following steps: when the supporting surface needs to be cleaned, the device is in an inclined state due to the fact that the hydraulic rod is stretched out, the hydraulic rod close to the slag basin stretches out a little, the rest of the hydraulic rods stretch out a lot, the telescopic head at the front end of the supporting surface is stretched out, the supporting surface stretches into the upper portion of the slag basin, the hydraulic vibration hammer is started, bonded slag is made to slide into the slag basin under the vibration effect of the hydraulic vibration hammer, and the device is reset after cleaning is finished.
Compared with the prior art, the invention has the following beneficial effects:
(1) When the steel scrap is added in the smelting process of the converter, the supporting surface of the device is supported at the bottom of the steel scrap groove, so that the sudden falling accident of the steel scrap groove can be effectively reduced, and meanwhile, the steel scrap adding process can be effectively promoted through the vibration of the hydraulic vibration hammer, and the difficulty in steel scrap adding is reduced;
(2) The device has simple structure and ingenious design, is arranged on the slag car of the converter, utilizes the existing electric power system of the slag car, and can disassemble, install and use the existing crown block system without blocking the normal slag pouring operation of the converter;
(3) The device has a self-cleaning function, so that dangerous factors are effectively avoided.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a top view of the support surface;
fig. 3 is a left side view of the support surface.
Wherein, 1-scrap steel groove, 2-supporting surface, 3-hydraulic vibration hammer, 4-hydraulic rod, 5-slag car, 6-motor, 7-telescopic head, 8-slag basin, 21-suspension loop, 22-suspension loop, 23-drill rod.
Detailed Description
In order to better explain the present invention and to facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are in accordance with the claims.
A device for preventing a steel scrap groove from sliding off when a converter adds steel scrap is arranged on a converter slag car 5 and comprises a supporting surface 2, 4 hydraulic rods 4 and 4 hydraulic vibration hammers 3, wherein the hydraulic vibration hammers 3 are connected above the hydraulic rods 4, the hydraulic vibration hammers 3 are connected with the supporting surface 2, the device is driven by a motor 6 arranged below the slag car 5, and the power supply of the motor 6 uses the existing power system of the slag car 5; the front end of the supporting surface 2 is provided with a telescopic head 7.
The method for adding the steel scraps in the converter by adopting the device in a certain factory comprises the following steps: (a) Firstly, adjusting 4 hydraulic rods 4 to positions vertical to the ground, and simultaneously adjusting the upper surfaces of 4 hydraulic vibration hammers 3 to the same plane; (b) Hanging lugs 22 on two sides of the supporting surface 2 by using a gantry large hook of the overhead travelling crane, hanging a tail hanging ring 21 by using a small hook, and adjusting the positions of the large hook and the small hook to enable the supporting surface 2 to be parallel to the ground; (c) When the supporting surface 2 is moved to the position right above the hydraulic vibration hammer 3, the supporting surface 2 is descended at the speed of 5-10 cm/s, the position of the supporting surface 2 is continuously adjusted at the same time, so that the drill rod 23 at the bottom of the supporting surface 2 falls into the guide pipe of the hydraulic vibration hammer 3 at the same time, and then the supporting surface 2 is descended continuously at the speed of 1-3 cm/s until the drill rod 23 completely falls into the hydraulic vibration hammer 3; (d) The device is moved to the lower part of the converter by the movement of the slag car 5, and the hydraulic rod 4 is extended until the supporting surface 2 is supported at the bottom of the scrap steel groove 1, so that the purpose of preventing the scrap steel groove 1 from suddenly sliding is realized; (e) When the scrap steel groove 1 is lifted to a normal position, the scrap steel still can not enter the converter, 2 hydraulic vibration hammers 3 close to the telescopic head 7 are started, and the scrap steel is promoted to enter the converter through the vibration of the hydraulic vibration hammers 3; (f) After adding the scrap steel, clean 2 operations on the holding surface, stretch out hydraulic stem 4 and make the device is in the tilt state, and wherein the hydraulic stem 4 that is close to sediment basin 8 stretches out less, and its remaining liquid depression bar 4 stretches out more, stretches out the flexible head 7 of holding surface front end simultaneously, makes holding surface 2 stretch into sediment basin 8 top, starts hydraulic vibratory hammer 3, makes the slag landing of bonding to the sediment basin 8 in under the vibration of hydraulic vibratory hammer 3, will after the cleanness finishes the device resets.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A device for preventing a steel scrap groove from sliding off when a converter adds steel scrap is characterized in that the device is arranged on a converter slag car and comprises a supporting surface, a hydraulic rod and a hydraulic vibration hammer, wherein the hydraulic vibration hammer is connected above the hydraulic rod and is connected with the supporting surface; a drill rod is welded at the bottom of the supporting surface, and the size of the drill rod is matched with that of the hydraulic vibration hammer; a trumpet-shaped guide pipe is arranged in the drill rod inserting hole of the hydraulic vibration hammer, so that the drill rod can conveniently enter the hydraulic vibration hammer; the two sides of the head of the supporting surface are provided with hanging lugs, the hanging lugs are positioned at 1/5 to 1/4 of the total length of the supporting surface, hanging rings are arranged at the tail of the supporting surface, and the sizes of the hanging rings of the hanging lugs are matched with the existing overhead crane system of the converter.
2. The apparatus for preventing the scrap box from slipping down when adding the scrap in the converter according to claim 1, wherein the number of the hydraulic rams and the number of the hydraulic vibration hammers are the same.
3. The apparatus according to claim 2, wherein the number of the hydraulic rods and the hydraulic vibration hammers is 4.
4. The device for preventing the steel scrap groove from sliding off during the process of adding the steel scrap into the converter according to claim 1, wherein the hydraulic rod is of a multi-stage structure, after the hydraulic rod is contracted, the height of the supporting surface is less than or equal to the height of the existing slag pot of the converter slag car, and after the hydraulic rod is extended out, the supporting surface can be completely attached to the bottom of the steel scrap groove; the hydraulic vibration hammer above the hydraulic rod is mechanically connected with the electric hydraulic rod, and the hydraulic rod or the hydraulic vibration hammer can be replaced when damaged.
5. The device for preventing the scrap box from sliding down in the process of adding the scrap into the converter according to claim 1, wherein a telescopic head which can stretch out and draw back is arranged at the front end of the supporting surface, and the maximum extension length of the telescopic head is 0.5 to 1 meter.
6. A method for preventing a scrap box from sliding down when adding scrap in a converter, which is characterized in that the device of any one of claims 1 to 5 is adopted, and the method comprises the following steps:
(a) Firstly, adjusting a hydraulic rod to a position vertical to the ground, and simultaneously adjusting the upper surface of a hydraulic vibration hammer to the same plane;
(b) Hanging lugs on two sides of a supporting surface by using a gantry large hook of the overhead travelling crane, hanging a tail hanging ring by using a small hook, and adjusting the positions of the large hook and the small hook to enable the supporting surface to be parallel to the ground;
(c) When the support surface is moved to be right above the hydraulic vibration hammer, the support surface is descended at a first speed, the position of the support surface is continuously adjusted at the same time, so that the drill rod at the bottom of the support surface simultaneously falls into the guide pipe of the hydraulic vibration hammer, and then the support surface is continuously descended at a second speed until the drill rod completely falls into the hydraulic vibration hammer;
(d) When the amount of the waste steel in the converter is larger, the device is moved to the position below the converter through the movement of the slag car, and the hydraulic rod is extended out until the supporting surface is supported at the bottom of the waste steel tank, so that the aim of preventing the waste steel tank from suddenly sliding down is fulfilled;
(e) When the scrap steel groove is lifted to a normal position and the scrap steel still cannot enter the converter, starting the hydraulic vibration hammer, and promoting the scrap steel to enter the converter through the vibration of the hydraulic vibration hammer;
(f) And after the addition of the waste steel is finished, the hydraulic rod is contracted to the lowest point, and the slag car and the device are moved to normal positions.
7. The method of claim 6, further comprising: when the supporting surface needs to be replaced, the hanging lug and the hanging ring of the supporting surface are hung by the overhead travelling crane, and the supporting surface is taken away and replaced.
8. The method according to claim 6, wherein when the supporting surface needs to be cleaned, the device is in an inclined state by extending the hydraulic rods, wherein the hydraulic rods close to the slag basin extend less, the rest hydraulic rods extend more, and simultaneously extend the telescopic head at the front end of the supporting surface, so that the supporting surface extends above the slag basin, the hydraulic vibration hammer is started, bonded slag is promoted to slide into the slag basin under the vibration effect of the hydraulic vibration hammer, and the device is reset after cleaning is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210070625.XA CN114410884B (en) | 2022-01-21 | 2022-01-21 | Device for preventing steel scrap groove from sliding off during steel scrap adding of converter and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210070625.XA CN114410884B (en) | 2022-01-21 | 2022-01-21 | Device for preventing steel scrap groove from sliding off during steel scrap adding of converter and using method |
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| Publication Number | Publication Date |
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| CN114410884A CN114410884A (en) | 2022-04-29 |
| CN114410884B true CN114410884B (en) | 2023-01-13 |
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| CN202210070625.XA Active CN114410884B (en) | 2022-01-21 | 2022-01-21 | Device for preventing steel scrap groove from sliding off during steel scrap adding of converter and using method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202741726U (en) * | 2012-07-30 | 2013-02-20 | 武汉钢铁(集团)公司 | Support device used for disassembling tundish |
| CN107236840A (en) * | 2017-07-12 | 2017-10-10 | 中冶南方工程技术有限公司 | Converter adds steel scrap device |
| RU2016130583A (en) * | 2016-07-25 | 2018-02-01 | Закрытое Акционерное Общество "Производственная торгово-финансовая компания "Технотрон" (ЗАО "ПТФК "Технотрон") | SLAGOVOZ |
| CN207891372U (en) * | 2018-03-09 | 2018-09-21 | 贵州大学 | One kind can power-assisted converter scrap box |
| CN211112059U (en) * | 2019-10-30 | 2020-07-28 | 德龙钢铁有限公司 | Accurate scrap steel device that adds in molten iron jar |
| CN211112077U (en) * | 2019-11-11 | 2020-07-28 | 山西通才工贸有限公司 | Effectively improve steel scrap fill of steel scrap efficiency of packing into |
| CN214115609U (en) * | 2021-01-11 | 2021-09-03 | 武钢集团昆明钢铁股份有限公司 | Ladle tipping type scrap steel feeding device |
-
2022
- 2022-01-21 CN CN202210070625.XA patent/CN114410884B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202741726U (en) * | 2012-07-30 | 2013-02-20 | 武汉钢铁(集团)公司 | Support device used for disassembling tundish |
| RU2016130583A (en) * | 2016-07-25 | 2018-02-01 | Закрытое Акционерное Общество "Производственная торгово-финансовая компания "Технотрон" (ЗАО "ПТФК "Технотрон") | SLAGOVOZ |
| CN107236840A (en) * | 2017-07-12 | 2017-10-10 | 中冶南方工程技术有限公司 | Converter adds steel scrap device |
| CN207891372U (en) * | 2018-03-09 | 2018-09-21 | 贵州大学 | One kind can power-assisted converter scrap box |
| CN211112059U (en) * | 2019-10-30 | 2020-07-28 | 德龙钢铁有限公司 | Accurate scrap steel device that adds in molten iron jar |
| CN211112077U (en) * | 2019-11-11 | 2020-07-28 | 山西通才工贸有限公司 | Effectively improve steel scrap fill of steel scrap efficiency of packing into |
| CN214115609U (en) * | 2021-01-11 | 2021-09-03 | 武钢集团昆明钢铁股份有限公司 | Ladle tipping type scrap steel feeding device |
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