CN113976873B - Ladle nozzle bottom pouring flow guiding sand device and process thereof - Google Patents
Ladle nozzle bottom pouring flow guiding sand device and process thereof Download PDFInfo
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- CN113976873B CN113976873B CN202111193617.6A CN202111193617A CN113976873B CN 113976873 B CN113976873 B CN 113976873B CN 202111193617 A CN202111193617 A CN 202111193617A CN 113976873 B CN113976873 B CN 113976873B
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- sliding plate
- ladle
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- drainage sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/44—Consumable closure means, i.e. closure means being used only once
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Abstract
The invention relates to a ladle nozzle bottom pouring flow guiding sand device and a process thereof, belonging to the technical field of steel-making continuous casting in the metallurgical industry. The technical scheme is as follows: go up mouth of a river (5) and fix in the brick cup of ladle bottom, go up mouth of a river (5) and lower mouth of a river (1) and cross the steel passageway, lower mouth of a river (1) and lower slide (2) are by hydraulic drive synchronous motion, slide (3) in fixed one on lower slide (2), be equipped with on well slide (3) with last slide (4) and lower slide (2) be linked together cross steel hole (8), the one side of crossing steel hole (8) is equipped with drainage sand holding tank (6), the storage has the drainage sand in drainage sand holding tank (6), be equipped with a pushing ram (7) in drainage sand holding tank (6), install push pedal (9) on pushing ram (7), pushing ram (7) are by hydraulic pressure or pneumatic drive. The invention has the beneficial effects that: the steel tapping hole can be quickly plugged on line, so that the ladle hot repair process is omitted, and hot slag recycling is realized.
Description
Technical Field
The invention relates to a ladle nozzle bottom pouring flow guiding sand device and a process thereof, belonging to the technical field of steelmaking continuous casting production in the metallurgical industry.
Background
The upper pouring of the drainage sand in the ladle is the traditional process for plugging the steel tapping hole of the ladle, the ladle is prepared to be completely transferred to a converter, the drainage sand is guided into the steel tapping hole by adopting a pipeline above the ladle, after the steel tapping of the converter enters the ladle, the molten steel in the ladle promotes the sintering of the drainage sand at the upper layer, and the drainage sand at the lower layer is still sand-shaped so as to separate a sliding plate and the molten steel, so that the plugging of the molten steel during refining is realized, the sliding plate is pulled open when the continuous casting is started, the drainage sand collapses, the sintered layer is broken, and the water gap is automatically started to be cast. After the pouring is finished, the ladle must be thermally repaired to complete the preparation of the ladle, and the next steel can be connected, the ladle thermal repair is an inevitable procedure of reconnecting the steel after the continuous casting and the steel pouring of the ladle, and the preparation work of dumping and cleaning residual steel slag after the coil is off, cleaning air bricks by an oxygen lance, cleaning a steel outlet, cleaning a sliding plate, installing a sliding plate system, baking the ladle, injecting drainage sand on the back of the furnace and the like is included, so that the off-line thermal repair not only influences the use efficiency of the ladle, but also greatly increases the heat loss. The invention patent published in 2021, which is the only method for adding the drainage sand by the off-line pouring method, needs a set of complex powder spraying system, is a method for adding the drainage sand from the ladle sliding water gap by adding the drainage sand from the ladle bottom and injecting the drainage sand into the steel tapping hole of the ladle by adopting compressed air from a sand storage tank under the action of pressure.
In recent years, the recycling of the refining slag hot slag is more and more emphasized by metallurgy workers, and because the refining slag is recycled, a large amount of slag materials can be saved, the LF melting slag heat is saved, and the refining time is shortened. However, the prior ladle preparation process can not directly connect steel with a ladle filled with refining slag, can not directly pour the residual steel slag into the prepared ladle, and can only pour the residual steel and slag onto the slag surface of the ladle with molten steel, so that the scheduling is very inconvenient. In a word, due to the adoption of the technology of pouring the drainage sand, ladle hot repair preparation is an essential process, the refining slag thermal recycling benefits are many, but the recovery operation is influenced to a certain extent.
Disclosure of Invention
The invention aims to provide a ladle nozzle bottom pouring flow guiding sand device and a process thereof, which can realize the on-line quick plugging of a steel outlet and can connect steel with slag, thereby omitting the hot repair process of the ladle, realizing the recycling of hot slag and solving the problems in the background technology.
The technical scheme of the invention is as follows:
the utility model provides a ladle mouth of a river lower pouring drainage sand device, contains mouth of a river, lower slide, top slide and the mouth of a river of going up, the mouth of a river of going up is fixed in the brick cup of ladle bottom, it is the steel passageway to go up mouth of a river and lower mouth of a river, mouth of a river and lower slide are by hydraulic drive synchronous motion down, fixed one well slide on lower slide, be equipped with on the well slide with last slide and the lower slide intercommunication cross the steel hole, the one side of crossing the steel hole is equipped with drainage sand holding tank, the storage of drainage sand holding tank has the drainage sand, be equipped with a propulsion pole towards crossing the steel hole in the drainage sand holding tank, install the push pedal on the propulsion pole, the propulsion pole is by hydraulic pressure or pneumatic drive.
The drainage sand storage tank is a rectangular tank, and the width of the storage tank is the same as the aperture of the steel hole.
And the push plate on the push rod is rectangular and matched with the drainage sand storage tank.
The middle sliding plate and the lower sliding plate are connected into a whole.
The upper sliding plate, the upper water gap, the middle sliding plate, the lower water gap and the lower sliding plate form a sliding plate mechanism.
A ladle nozzle bottom pouring flow guiding sand process adopts the ladle nozzle bottom pouring flow guiding sand device limited by the above, when continuous casting is finished quickly, namely the depth of steel remained in a ladle is 10-100mm, the inner wall of a water feeding nozzle is ensured not to be adhered with slag, a middle sliding plate and a lower sliding plate are driven, the middle sliding plate and the lower sliding plate synchronously move to stagger the water feeding nozzle, the ladle stops pouring, the water feeding nozzle falls on a flow guiding sand storage tank, a push rod is immediately started, flow guiding sand is pushed into the water feeding nozzle through a push plate to enter a bottom pouring flow guiding sand state, when a sand layer reaches a water feeding nozzle bowl opening, the flow guiding sand on the upper part in the water feeding nozzle is sintered at high temperature of molten steel, and therefore the purpose of plugging the water nozzle is achieved.
The beneficial effects of the invention are: in the final stage of pouring, the drainage sand can be added into the water feeding port on line by a pouring method, so that the drainage sand on the upper layer is rapidly sintered to block the water feeding port, the ladle does not need to be repaired by heat, the slag of the ladle is not poured or part of the slag is poured, the ladle is directly transferred to the converter to be connected with steel, and continuous operation is carried out, thereby reducing heat loss, improving production efficiency and creating conditions for heat recovery and utilization of refining slag.
Drawings
FIG. 1 is a schematic diagram of a ready state of the present invention;
FIG. 2 is a schematic view of the pouring state of the present invention;
FIG. 3 is a schematic view of the bottom pouring sand drainage state of the present invention;
in the figure: 1. a water outlet; 2. a lower slide plate; 3. a middle slide plate; 4. an upper slide plate; 5. a water feeding port; 6. a drainage sand storage tank; 7. a push rod; 8. passing through a steel hole; 9. a push plate.
Detailed Description
The invention is further illustrated by way of example in the following with reference to the accompanying drawings.
Referring to attached figures 1-3, the ladle nozzle bottom pouring stuffing sand device comprises a lower nozzle 1, a lower sliding plate 2, an upper sliding plate 4 and an upper nozzle 5, wherein the upper nozzle 5 is fixed in a brick cup at the bottom of a ladle, the upper nozzle 5 and the lower nozzle 1 are steel channels, the lower nozzle 1 and the lower sliding plate 2 synchronously move by hydraulic drive, a middle sliding plate 3 is fixed on the lower sliding plate 2, a steel passing hole 8 communicated with the upper sliding plate 4 and the lower sliding plate 2 is arranged on the middle sliding plate 3, a stuffing sand storage tank 6 is arranged on one side of the steel passing hole 8, stuffing sand is stored in the stuffing sand storage tank 6, a push rod 7 facing the steel passing hole 8 is arranged in the stuffing sand storage tank 6, a push plate 9 is arranged on the push rod 7, and the push rod 7 is driven by hydraulic pressure or pneumatic pressure.
In this embodiment, referring to fig. 1-3, the sliding plate mechanism is assembled by a lower nozzle 1, a lower sliding plate 2, a middle sliding plate 3, an upper sliding plate 4 and an upper nozzle 5, a drainage sand storage tank 6 and a push rod 7 are located on the middle sliding plate 3, the lower nozzle 1 is connected with the lower sliding plate 2, the upper nozzle 5 is connected with the upper sliding plate 4, the upper nozzle 5 and the lower nozzle 1 are steel passing channels, and the upper nozzle 5 is fixed in a ladle brick cup; the middle sliding plate 3 is fixed with the lower sliding plate 2 and moves parallel to the upper sliding plate 4 under the hydraulic driving force; the middle sliding plate 3 is provided with a drainage sand storage groove 6 in the walking direction, which can store a certain amount of drainage sand, and a propelling rod 7 driven by hydraulic pressure or pneumatic pressure is arranged in the groove.
The specific implementation process is as follows:
the first step is as follows: the preparation of the sliding plate mechanism is shown in the attached figure 1, the upper sliding plate 4 and the lower sliding plate 2 are of conventional thickness, the thickness and the length of the middle sliding plate 3 are set according to actual needs so as to meet the capacity that the drainage sand storage tank 6 can contain drainage sand, the drainage sand storage tank 6 is a rectangular tank, the width of the drainage sand storage tank is consistent with the aperture of the steel hole 8, for example, the consumption of the drainage sand is 1 liter, the aperture of the steel hole 8 is 40mm, the width, the height and the length of the drainage sand storage tank 6 are respectively 40mm, 100mm and 250mm, the granularity of the drainage sand is less than or equal to 2mm, after the sliding plate mechanism is filled with the drainage sand, the sliding plate mechanism is installed with hydraulic and pneumatic driving mechanisms, the sliding plate mechanism is integrally fixed at the bottom of a ladle, the upper sliding plate 4 is fixedly connected with the steel tapping hole 5, and the preparation and installation of the sliding plate structure are completed. After the preparation, the first furnace is operated normally, the sliding plate mechanism is closed, as shown in figure 1, the ladle is baked, and after the ladle is placed in the furnace, the ladle is filled with the drainage sand, and the ladle is connected with molten steel in a converter and then is refined.
The second step: and in the pouring stage, as shown in the attached figure 2, after the first furnace smelting is completed, the ladle is hoisted to a steel pouring platform to be ready, the upper nozzle 5 and the lower nozzle 1 are communicated by moving the lower sliding plate 2 of the ladle to the right, and the pouring state is continued until the first furnace steel pouring is completed.
The third step: and (3) pouring down the drainage sand, as shown in the attached figure 3, when the continuous casting is finished (the depth of the residual steel of the general steel ladle is 10-100 mm), ensuring that the inner wall of the upper nozzle 5 is not adhered with slag, enabling the middle sliding plate 3 and the lower sliding plate 2 to synchronously move rightwards and stagger the upper nozzle 5, stopping pouring the steel ladle, and when the upper nozzle 5 falls on the drainage sand storage tank 6, starting the push rod 7, pushing the drainage sand into the upper nozzle 5 through the push plate 9 to enter a downward pouring drainage sand state, stopping when the sand layer reaches the bowl mouth of the upper nozzle 5, and sintering the upper drainage sand in the nozzle at high temperature of molten steel, thereby achieving the purpose of plugging the nozzle.
Claims (5)
1. The ladle nozzle bottom pouring flow guiding sand process is characterized in that: the ladle nozzle bottom pouring drainage sand device comprises a lower nozzle (1), a lower sliding plate (2), an upper sliding plate (4) and an upper nozzle (5), wherein the upper nozzle (5) is fixed in a brick cup at the bottom of a ladle, the upper nozzle (5) and the lower nozzle (1) are steel channels, the lower nozzle (1) and the lower sliding plate (2) synchronously move by hydraulic drive, a middle sliding plate (3) is fixed on the lower sliding plate (2), a steel passing hole (8) communicated with the upper sliding plate (4) and the lower sliding plate (2) is formed in the middle sliding plate (3), a drainage sand storage tank (6) is arranged on one side of the steel passing hole (8), drainage sand is stored in the drainage sand storage tank (6), a pushing rod (7) facing the steel passing hole (8) is arranged in the drainage sand storage tank (6), a pushing plate (9) is arranged on the pushing rod (7), and the pushing rod (7) is driven by hydraulic pressure or pneumatic pressure; the method comprises the following specific steps:
the first step is as follows: preparing a sliding plate mechanism, namely installing the sliding plate mechanism and a hydraulic and pneumatic driving mechanism, integrally fixing the sliding plate mechanism at the bottom of a steel ladle, and fixedly connecting an upper sliding plate with a steel tapping hole to finish the preparation and installation of the sliding plate mechanism; after the preparation, the first furnace is operated conventionally, the sliding plate mechanism is closed, the ladle is baked, and after the ladle is placed into the furnace, the ladle is filled with drainage sand, and the ladle is connected with converter molten steel and then refined;
the second step is that: in the pouring stage, after the first furnace smelting is finished, the ladle is hoisted to a steel pouring platform to be ready, the upper nozzle and the lower nozzle are communicated by moving the lower sliding plate of the ladle to the right, the steel ladle enters a pouring state, and the pouring is continued until the first furnace steel is poured;
the third step: when the continuous casting is finished, namely the depth of the steel ladle is 10-100mm, the inner wall of the upper nozzle (5) is ensured not to be stained with slag, the middle sliding plate (3) and the lower sliding plate (2) are driven to synchronously move the middle sliding plate (3) and the lower sliding plate (2) to stagger the upper nozzle (5), the steel ladle stops casting, the upper nozzle (5) falls on the drainage sand storage tank (6), the push rod (7) is immediately started, the drainage sand is pushed into the upper nozzle (5) through the push plate (9) to enter a lower pouring drainage sand state, when the sand layer reaches the bowl mouth of the upper nozzle (5), the upper drainage sand in the upper nozzle (5) is stopped, and is sintered at high temperature of molten steel, so that the purpose of plugging the nozzle is achieved.
2. The ladle nozzle pouring flow-guiding sand process according to claim 1, characterized in that: the drainage sand storage groove (6) is a rectangular groove, and the width of the storage groove (6) is the same as the aperture of the steel hole (8).
3. The ladle nozzle pouring flow guiding sand process according to claim 2, characterized in that: and the push plate (9) on the push rod (7) is rectangular and matched with the drainage sand storage tank (6).
4. The ladle nozzle pouring flow-guiding sand process according to claim 1, characterized in that: the middle sliding plate (3) and the lower sliding plate (2) are connected into a whole.
5. The ladle nozzle pouring flow-guiding sand process according to claim 1, characterized in that: the upper sliding plate (4), the upper water gap (5), the middle sliding plate (3), the lower water gap (1) and the lower sliding plate (2) form a sliding plate mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111193617.6A CN113976873B (en) | 2021-10-13 | 2021-10-13 | Ladle nozzle bottom pouring flow guiding sand device and process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111193617.6A CN113976873B (en) | 2021-10-13 | 2021-10-13 | Ladle nozzle bottom pouring flow guiding sand device and process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113976873A CN113976873A (en) | 2022-01-28 |
| CN113976873B true CN113976873B (en) | 2023-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111193617.6A Active CN113976873B (en) | 2021-10-13 | 2021-10-13 | Ladle nozzle bottom pouring flow guiding sand device and process thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115161428A (en) * | 2022-07-01 | 2022-10-11 | 安徽云天冶金科技股份有限公司 | Converter slide pushing off slag device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1029057A (en) * | 1996-07-15 | 1998-02-03 | Nkk Corp | Method for charging sand into nozzle hole |
| JP2002346707A (en) * | 2001-05-25 | 2002-12-04 | Nkk Corp | Continuous casting method of steel |
| CN102310193A (en) * | 2011-03-09 | 2012-01-11 | 维苏威高级陶瓷(苏州)有限公司 | Steel ladle sliding mechanism |
| CN202804118U (en) * | 2012-05-31 | 2013-03-20 | 武汉钢铁(集团)公司 | Novel sand inverted pouring and drainage device |
| CN103240410A (en) * | 2013-05-17 | 2013-08-14 | 莱芜钢铁集团有限公司 | Sliding nozzle device for improving molten steel cleanliness by separating and recovering stuffing sand |
| WO2016050847A1 (en) * | 2014-10-01 | 2016-04-07 | Hermann Rauen Gmbh & Co. Vorm. Steinhandel Rauen | Device and method for opening a pouring channel of metallurgical vessels |
-
2021
- 2021-10-13 CN CN202111193617.6A patent/CN113976873B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1029057A (en) * | 1996-07-15 | 1998-02-03 | Nkk Corp | Method for charging sand into nozzle hole |
| JP2002346707A (en) * | 2001-05-25 | 2002-12-04 | Nkk Corp | Continuous casting method of steel |
| CN102310193A (en) * | 2011-03-09 | 2012-01-11 | 维苏威高级陶瓷(苏州)有限公司 | Steel ladle sliding mechanism |
| CN202804118U (en) * | 2012-05-31 | 2013-03-20 | 武汉钢铁(集团)公司 | Novel sand inverted pouring and drainage device |
| CN103240410A (en) * | 2013-05-17 | 2013-08-14 | 莱芜钢铁集团有限公司 | Sliding nozzle device for improving molten steel cleanliness by separating and recovering stuffing sand |
| WO2016050847A1 (en) * | 2014-10-01 | 2016-04-07 | Hermann Rauen Gmbh & Co. Vorm. Steinhandel Rauen | Device and method for opening a pouring channel of metallurgical vessels |
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| CN113976873A (en) | 2022-01-28 |
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