CN114918409A - Method for adding ladle drainage sand - Google Patents
Method for adding ladle drainage sand Download PDFInfo
- Publication number
- CN114918409A CN114918409A CN202210559545.0A CN202210559545A CN114918409A CN 114918409 A CN114918409 A CN 114918409A CN 202210559545 A CN202210559545 A CN 202210559545A CN 114918409 A CN114918409 A CN 114918409A
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- CN
- China
- Prior art keywords
- sand
- ladle
- nozzle
- drainage sand
- eye
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 54
- 239000010959 steel Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000002893 slag Substances 0.000 abstract description 8
- 230000003068 static effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a method for adding ladle drainage sand, which comprises the steps of carrying out sand adding operation twice through manual sand adding and automatic sand adding of sand adding equipment, confirming whether foreign matters exist in a nozzle hole through inclined and static placement of a ladle, effectively reducing the times of non-self-opening caused by backflow of liquid steel slag, solving the problem that the ladle is not self-opened because the liquid steel slag enters the nozzle hole in the ladle erecting process of the ladle, effectively improving the self-opening rate of the ladle and the quality of a product through optimizing and improving the basic operation on site, and reducing the labor intensity and potential safety hazards of an operator of a casting machine for eye burning after the ladle is not self-opened.
Description
Technical Field
The application relates to the technical field of steel smelting, in particular to a method for adding ladle drainage sand.
Background
With the stricter requirements on the molten steel components, the ladle self-opening rate has direct influence on the quality of a casting blank and the operation safety of an operator of a casting machine in continuous casting production. Under the condition that the steel ladle is not opened by itself, a protective sleeve for connecting the steel ladle and the tundish must be moved away, and the oxygen burning pipe is used for burning the drainage sand which does not flow downwards, so that the steel flow is unprotected for a period of time and secondary oxidation occurs, inclusions in a casting blank are increased, the casting can be broken in severe cases, and the continuous casting blank is degraded or even judged to be useless due to the bare casting of the molten steel.
Particularly for covered steel ladles, abnormal steel ladles and steel ladles with long time from tapping to casting, the self-opening rate of the steel ladles is obviously reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the application provides a method for adding ladle drainage sand, which aims to solve the problem of low self-opening rate of a ladle in the prior art.
The above purpose of the invention is mainly realized by the following technical scheme:
a method for adding ladle drainage sand comprises the following steps:
s1, cleaning the nozzle hole;
s2, artificially adding drainage sand into the nozzle eye, and blowing the nozzle eye clean;
s3, pouring out residual steel and residues by inclining and standing the ladle, and confirming that foreign matters are not in the nozzle eye;
s4, resetting the ladle, adding the drainage sand into the nozzle hole by the sand adding equipment until the nozzle hole meets the requirement, and finishing sand adding.
Further, in step S1, the residual steel and slag in the nozzle hole and nozzle block are cleaned by the oxygen lance.
Further, after the nozzle hole is cleaned, the ladle is inclined, and the cleaned residual steel and residue are poured out.
Further, the time to tilt the ladle is greater than 2 minutes.
Further, in step S2, when the drainage sand is manually added, the whole bag of drainage sand is put into the water hole.
Further, in step S2, the addition amount of the drainage sand is 20-30 kg.
Further, in step S3, the ladle is left standing for more than 2 minutes.
Further, in step S4, after the ladle is reset, after the highlight flashlight is used for checking that no foreign matter exists in the nozzle eye, the sand filling device is used for adding the drainage sand into the nozzle eye, the sand filling barrel is manually observed to be aligned with the nozzle eye, and the sand filling device is used for automatically filling the sand when the sand filling barrel is kept 400-500 mm above the nozzle eye.
Furthermore, the sand adding device adds drainage sand into the nozzle eye in an amount of 40-60 kg.
Further, in step S4, the sand filling into the nozzle eye is observed to be full, and the drainage sand on the upper part of the nozzle eye is steamed bread-shaped, so that the sand filling is completed.
Compared with the prior art, the invention has the advantages that:
the invention carries out the sand adding operation for two times through the manual sand adding and the automatic sand adding of the sand adding equipment, confirms whether foreign matters exist in the nozzle hole through the inclined standing of the steel ladle, effectively reduces the times of non-self-opening caused by the backflow of the liquid steel slag, solves the problem of non-self-opening of the steel ladle caused by the liquid steel slag entering the nozzle hole in the vertical ladle process of the steel ladle, not only effectively improves the self-opening rate of the steel ladle and improves the quality of products through optimizing and improving the basic operation on site, but also reduces the labor intensity and the potential safety hazard of the operator of the casting machine for carrying out eye burning after the non-self-opening of the steel ladle occurs.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating a method for adding ladle drainage sand provided in an embodiment of the present application.
Detailed Description
The invention is further described with reference to the following figures and specific examples. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments of the present invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
As shown in FIG. 1, the method for adding ladle drainage sand comprises the following steps:
s1, cleaning the nozzle hole;
s2, artificially adding drainage sand into the nozzle eye, and purging the nozzle eye;
s3, pouring out residual steel and residues by inclining and standing the steel ladle, and confirming that foreign matters are not in the nozzle eye;
s4, resetting the ladle, and adding the drainage sand into the nozzle hole by the sand adding equipment until the nozzle hole meets the requirement, thereby completing sand adding.
The ladle self-opening rate is an important index for steelmaking production, and has great influence on the quality of molten steel and production rhythm. In the pouring process, a mechanical arm is needed to open the steel ladle sliding plate, then the steel ladle is automatically opened to pour molten steel, if the steel ladle fails to automatically open, holes are forced to be burnt, the molten steel is easy to drip and pour, and a shutdown accident of the continuous casting machine is caused in severe cases.
Further, in step S1, the residual steel and slag in the nozzle hole and nozzle block are cleaned by the oxygen lance.
The oxygen lance is a tubular device which blows high-pressure high-purity oxygen above a metal molten pool in a converter at supersonic speed and is provided with a high-pressure water cooling protection system.
Further, after the nozzle hole is cleaned, the ladle is inclined, and the cleaned residual steel and residue are poured out. The residual steel and the residue cleaned by the oxygen lance are separated from the steel ladle, and after the steel ladle is inclined, the residual steel and the residue are poured out of the steel ladle under the action of gravity.
Furthermore, the time for tilting the ladle is more than 2 minutes, so that the phenomenon that the residual steel and the residues are remained again due to over-short time and incomplete pouring is avoided.
In the actual operation process, when the ladle is in an inclined state, the inclination time of the ladle is prolonged when the liquid residual steel and residues formed under the action of the oxygen lance are detected to be more until the liquid residual steel and residues are poured completely.
Further, in step S2, when the drainage sand is added manually, the whole bag of drainage sand is put into the water hole, and the operator adds the sand on the sand adding telescopic platform.
Further, in step S2, the addition amount of the drainage sand is 20-30 kg.
When the drainage sand is added manually, the whole bag of the drainage sand is added, the whole bag has large mass and large impact force during falling, if foreign matters exist at the periphery of a water gap, the whole bag of the drainage sand can be directly smashed through falling impact, the mass of one bag of the drainage sand is 10 kilograms, 2-3 bags are added, if one bag is added, the amount of the drainage sand is insufficient, the water gap is not filled fully, and the drainage sand is added into more than three bags, so that waste is generated.
Further, in step S3, the ladle is left standing for more than 2 minutes, and the residual steel and the residue after the sand addition and the blowing are poured out and checked again to ensure that no foreign matter exists in the nozzle hole.
Further, in step S4, after the ladle is reset, after the highlight flashlight is used for checking that no foreign matter exists in the nozzle eye, the sand filling device is used for adding the drainage sand into the nozzle eye, the sand filling barrel is manually observed to be aligned with the nozzle eye, and the sand filling device is used for automatically filling the sand when the sand filling barrel is kept 400-500 mm above the nozzle eye.
Furthermore, the sand adding device adds drainage sand into the nozzle eye in an amount of 40-60 kg.
Further, in step S4, the sand filling into the nozzle eye is observed to be full, and the drainage sand on the upper part of the nozzle eye is steamed bread-shaped, so that the sand filling is completed.
The invention carries out the sand adding operation twice through the manual sand adding and the automatic sand adding of the sand adding equipment, confirms that no foreign matter exists in the nozzle hole through the inclined standing of the steel ladle, effectively reduces the times of the non-self-opening caused by the backflow of the liquid steel slag, solves the problem of the non-self-opening of the steel ladle caused by the liquid steel slag entering the nozzle hole in the vertical ladle process of the steel ladle, effectively improves the self-opening rate of the steel ladle and the quality of products through optimizing and improving the basic operation on site, and reduces the labor intensity and the potential safety hazard of the operator of the casting machine for carrying out the eye burning after the non-self-opening of the steel ladle occurs.
In actual use:
cleaning residual steel and residues in the nozzle hole and the nozzle brick cup through an oxygen lance;
then tilting the ladle, and pouring out the cleaned residual steel and residue;
artificially adding 20kg of whole ladle of drainage sand into the water gap eyes, and completely blowing the water gap eyes;
the ladle is inclined and placed still again, the residual steel and the residue after sand adding and blowing are poured out, and the foreign matter in the nozzle eye is ensured by checking again;
after the ladle is reset, after the fact that no foreign matter exists in the sprue eyes is detected by a highlight flashlight, the stuffing sand is added into the sprue eyes through the sand adding equipment, the sand adding barrel is manually observed to be aligned to the sprue eyes, the sand adding equipment automatically adds sand when the sand adding barrel is kept 450mm above the sprue eyes, the adding amount of the stuffing sand added into the sprue eyes by the sand adding equipment is 50kg, the sand is fully added into the sprue eyes through the observation, and the stuffing sand on the upper portions of the sprue eyes is in a steamed bun shape, so that the sand adding is completed.
It should be understood that the terms first, second, etc. are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.
It is to be understood that the terms "upper," "vertical," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship that is conventionally used for placing the disclosed articles of manufacture or that is conventionally understood by those skilled in the art, which is intended merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
In the following description, specific details are provided to provide a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring the example embodiments.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The method for adding the ladle drainage sand is characterized by comprising the following steps of:
s1, cleaning the nozzle hole;
s2, artificially adding drainage sand into the nozzle eye, and blowing the nozzle eye clean;
s3, pouring out residual steel and residues by inclining and standing the ladle, and confirming that foreign matters are not in the nozzle eye;
s4, resetting the ladle, and adding the drainage sand into the nozzle hole by the sand adding equipment until the nozzle hole meets the requirement, thereby completing sand adding.
2. The method for adding the ladle drainage sand as set forth in claim 1, wherein the method comprises the following steps: in step S1, the residual steel and residue in the nozzle hole and nozzle block are cleaned up by the oxygen lance.
3. The method for adding the ladle drainage sand as claimed in claim 2, wherein the method comprises the following steps: after the nozzle hole is cleaned, the ladle is inclined, and the cleaned residual steel and residue are poured out.
4. The method for adding the ladle drainage sand as claimed in claim 3, wherein the method comprises the following steps: the tilting time of the ladle was greater than 2 minutes.
5. The method for adding the ladle drainage sand as recited in claim 1, which is characterized in that: in step S2, when the drainage sand is added manually, the whole drainage sand bag is put into the water hole.
6. The method for adding the ladle drainage sand as recited in claim 1, which is characterized in that: in step S2, the addition amount of the drainage sand is 20-30 kg.
7. The method for adding the ladle drainage sand as recited in claim 1, which is characterized in that: in step S3, the ladle is left standing for more than 2 minutes.
8. The method for adding the ladle drainage sand as recited in claim 1, which is characterized in that: in step S4, after the ladle is reset, after the highlight flashlight is used for detecting that no foreign matter exists in the nozzle eye, the sand filling equipment is used for adding drainage sand into the nozzle eye, the sand filling barrel is manually observed to be aligned to the nozzle eye, and the sand filling equipment is used for automatically filling sand when the sand filling barrel is kept 400-500 mm above the nozzle eye.
9. The method for adding the ladle drainage sand as set forth in claim 1, wherein the method comprises the following steps: the adding amount of the drainage sand added into the nozzle eye by the sand adding equipment is 40-60 kg.
10. The method for adding the ladle drainage sand as set forth in claim 1, wherein the method comprises the following steps: and step S4, observing the water gap eye to fill with full sand, and finishing sand filling when the drainage sand at the upper part of the water gap eye is in a steamed bun shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210559545.0A CN114918409A (en) | 2022-05-19 | 2022-05-19 | Method for adding ladle drainage sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210559545.0A CN114918409A (en) | 2022-05-19 | 2022-05-19 | Method for adding ladle drainage sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114918409A true CN114918409A (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210559545.0A Pending CN114918409A (en) | 2022-05-19 | 2022-05-19 | Method for adding ladle drainage sand |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0938756A (en) * | 1995-07-28 | 1997-02-10 | Kawasaki Steel Corp | Method for starting casting in continuous casting |
| CN201900260U (en) * | 2010-12-24 | 2011-07-20 | 唐山市丰润区鑫源机械制造有限公司 | Sand cleaning machine for casting inner cavity |
| CN103464713A (en) * | 2013-09-11 | 2013-12-25 | 江苏联峰能源装备有限公司 | Method for improving automatic casting ratio and stuffing sand thereof |
| CN204996568U (en) * | 2015-08-07 | 2016-01-27 | 浙江大学 | Adopt granule to erode spool formula high temperature electrostatic precipitator device of deashing |
| KR20170012670A (en) * | 2015-07-22 | 2017-02-03 | 주식회사 포스코 | Ladle filler and opening method using the same |
| CN108015265A (en) * | 2017-11-02 | 2018-05-11 | 中国航发哈尔滨东安发动机有限公司 | Complicated cavity and oil circuit casting inner wall cleaning method |
| KR20190072810A (en) * | 2017-12-18 | 2019-06-26 | 주식회사 포스코 | Nozzle device for laddle |
| CN112247131A (en) * | 2020-09-16 | 2021-01-22 | 德龙钢铁有限公司 | Ladle drainage sand and sand adding method |
| CN113458375A (en) * | 2020-03-31 | 2021-10-01 | 维苏威集团有限公司 | Robotic ladle transport device system with embedded manipulator |
| CN113927025A (en) * | 2021-09-15 | 2022-01-14 | 东北大学 | Chromium ladle drainage sand for high-manganese high-aluminum steel and preparation and use methods thereof |
-
2022
- 2022-05-19 CN CN202210559545.0A patent/CN114918409A/en active Pending
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|---|---|---|---|---|
| JPH0938756A (en) * | 1995-07-28 | 1997-02-10 | Kawasaki Steel Corp | Method for starting casting in continuous casting |
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| KR20170012670A (en) * | 2015-07-22 | 2017-02-03 | 주식회사 포스코 | Ladle filler and opening method using the same |
| CN204996568U (en) * | 2015-08-07 | 2016-01-27 | 浙江大学 | Adopt granule to erode spool formula high temperature electrostatic precipitator device of deashing |
| CN108015265A (en) * | 2017-11-02 | 2018-05-11 | 中国航发哈尔滨东安发动机有限公司 | Complicated cavity and oil circuit casting inner wall cleaning method |
| KR20190072810A (en) * | 2017-12-18 | 2019-06-26 | 주식회사 포스코 | Nozzle device for laddle |
| CN113458375A (en) * | 2020-03-31 | 2021-10-01 | 维苏威集团有限公司 | Robotic ladle transport device system with embedded manipulator |
| CN112247131A (en) * | 2020-09-16 | 2021-01-22 | 德龙钢铁有限公司 | Ladle drainage sand and sand adding method |
| CN113927025A (en) * | 2021-09-15 | 2022-01-14 | 东北大学 | Chromium ladle drainage sand for high-manganese high-aluminum steel and preparation and use methods thereof |
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| 钟凯;单庆林;卢家凯;王崇;沙远洋;曹勇;: "提高首钢京唐公司300t转炉钢包自动开浇率的措施", 矿冶, no. 1, pages 48 - 50 * |
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Effective date of registration: 20231114 Address after: 063200 Caofeidian Industrial Zone, Hebei, Tangshan City Applicant after: SHOUGANG JINGTANG IRON & STEEL Co.,Ltd. Applicant after: Yanshan University Address before: 063200 Caofeidian Industrial Zone, Hebei, Tangshan City Applicant before: SHOUGANG JINGTANG IRON & STEEL Co.,Ltd. |
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