CN105921734A - Method and device for keeping molten steel clean in casting of continuous casting ladle - Google Patents
Method and device for keeping molten steel clean in casting of continuous casting ladle Download PDFInfo
- Publication number
- CN105921734A CN105921734A CN201610318048.6A CN201610318048A CN105921734A CN 105921734 A CN105921734 A CN 105921734A CN 201610318048 A CN201610318048 A CN 201610318048A CN 105921734 A CN105921734 A CN 105921734A
- Authority
- CN
- China
- Prior art keywords
- molten steel
- steel
- ladle
- separating device
- withdrawer
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 116
- 239000010959 steel Substances 0.000 title claims abstract description 116
- 238000005266 casting Methods 0.000 title claims abstract description 16
- 238000009749 continuous casting Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000013051 drainage agent Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002893 slag Substances 0.000 claims abstract description 11
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 239000003818 cinder Substances 0.000 claims description 19
- 239000004576 sand Substances 0.000 claims description 18
- 239000003643 water by type Substances 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 230000003628 erosive effect Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 238000005580 one pot reaction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- -1 and in prevention Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000009856 non-ferrous metallurgy Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
- B22D43/004—Retaining slag during pouring molten metal by using filtering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/08—Accessories for starting the casting procedure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to a method and a device for keeping molten steel clean in casting of a continuous casting ladle. When the ladle is cast, a slide water port is opened; a drainage agent flows out from the slide water port, flows onto a casting cap by a long water port of a middle ladle, and flows into a recoverer for recovery along the upper surface of the casting cap; after the drainage agent flows, the molten steel flows down; one part of the molten steel mixed with the drainage agent flows into the drainage agent recoverer along the upper surface of the casting cap; then, the casting cap is corroded by the molten steel for leaking, and the molten steel flows down; after one pot of steel is cast, the long water port is pulled out from the molten steel to deviate from the surface of middle ladle slag; a slag separator is pressed into the molten steel of the middle ladle through middle ladle slag; the side wall of the slag separator is pressed into the molten steel to stop the middle ladle slag from entering the slag separator; and the recoverer is replaced for casting a next ladle. The method and the device have the following advantages: the whole structure is simple; the operation is convenient; the drainage agent and the middle ladle slag can be effectively prevented from mixing into the molten steel of the middle ladle in casting of the ladle; the inclusion in steel is reduced; the steel quality is stable; and the variety quality is stable.
Description
Technical field
The present invention relates to a kind of continuous casting steel and unwrap the method and device watering holding molten steel cleaning.
Background technology
Currently, smelter particularly iron and steel enterprise, use continuous casting process that molten steel is cast steel billet.Molten steel in ladle passes through
Ladle bottom slide gate nozzle flows out, and the middle bag long nozzle coupled below slide gate nozzle flows into tundish, and long nozzle lower end is buried
Under molten steel face, then in tundish flows out to crystallizer, form strand.
Continuous casting even waters in production process, and the molten steel in a ladle flows to end, and ladle is removed.Next ladle be put in the side of wrapping, carry
Going out long nozzle, molten steel face is left in long nozzle lower end, and long nozzle upper end couples with slide gate nozzle.Operation slide gate nozzle, steel flow
Go out.Declining ladle makes long nozzle lower end be embedded under molten steel face.So process, causes the drainage agent in slide gate nozzle and middle cinder inclusion
Being involved in a large number in middle Baogang water, severe contamination molten steel, formation is mingled with.At present, there is no fine solution both at home and abroad.For
Ensureing steel quality, by by the steel billet of this process contamination, demote or sentence useless, economic loss is huge, and can not thoroughly eliminate this mistake
Journey affects.Only open to water to be mingled with through measuring and calculating and just account for all 70%-80% being mingled with of ladle, even avoid opening watering folder therefore, it is possible to reduce
The miscellaneous key being to solve Inclusion Problem.
Abroad there is a kind of method: first water at middle bag external-open, after molten steel outflow is a certain amount of, closes slide gate nozzle, move on in middle bag
Top, declines ladle, after long nozzle lower end is embedded under molten steel face, again opens and water.So can be greatly decreased and be mingled with, but economical
Lose the hugest.
Summary of the invention
For overcoming the deficiencies in the prior art, it is an object of the invention to provide a kind of continuous casting steel and unwrap the method watering holding molten steel cleaning
And device, solve ladle and open and when watering, be mingled with drainage agent and the problem of middle cinder inclusion, Baogang's water rubbish pollution in minimizing.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of continuous casting steel is unwrapped and is watered the method keeping molten steel clean, comprises the following steps:
1) when carrying out first ladle open casting operation, slide gate nozzle is opened, and drainage agent flows out from slide gate nozzle, Jing Guozhong
Bag long nozzle flows to open and waters above cap or chute；
2) drainage agent waters cap upper surface and trickles in the groove of withdrawer recoverys along opening, after drainage agent trickles, and steel flow
Getting off, a part is contaminated with the molten steel of drainage agent and also waters cap upper surface and trickle in drainage agent withdrawer along opening；Or drainage agent
Directly reclaim through chute, drainage tube；Afterwards, open water cap or chute by molten steel erosion leakage, molten steel is dirty；
3) a tank steel cast terminates, and long nozzle proposes from molten steel, cinder inclusion surface in disengaging, by dregs separating device by middle cinder inclusion
Being pressed in Baogang's water, dregs separating device sidewall is pressed in molten steel, and in prevention, cinder inclusion enters into inside dregs separating device；
4) dregs separating device one side rotates, and opens cover plate, and molten steel enters in dregs separating device, along exposing middle cinder inclusion surface on dregs separating device,
Lower edge is immersed in molten steel, along there being breather on dregs separating device, to dregs separating device blowing argon gas, protects molten steel；
5) change withdrawer, second ladle open casting operation, after slide gate nozzle is opened, molten steel through long nozzle, withdrawer,
Being reclaimed drainage agent by withdrawer, open and water cap by molten steel erosion leakage, molten steel is dirty, flows in tundish dregs separating device hole；
6) second ladle declines, and drives long nozzle to decline, and long nozzle bottom is immersed in molten steel through middle dregs separating device；
7) step 5 is repeated)-step 6) realize next steel ladle pouring successively.
A kind of continuous casting steel is unwrapped and is watered the device keeping molten steel clean, including being arranged on the slide gate nozzle of ladle bottom, is fixed on steel
The long nozzle being connected bottom bag and with ladle, described long nozzle top is tightly connected with slide gate nozzle, also include withdrawer,
Dregs separating device, withdrawer is arranged on below long nozzle, and dregs separating device is arranged on below withdrawer；The dregs separating device side of being tubular structure, side
Wall is made up of refractory material, open top, and bottom is square cover plate, and cover plate is movably hinged with sidewall.
Described withdrawer by flow steel pipe, open water cap, cannelure forms, and is fixed with stream steel pipe in the middle of cannelure, flows steel pipe top
Portion is provided with to open waters cap.
Described opening that to water cap be the conical structure made by sheet metal, sheet metal thickness is 0.3-5mm.
Described cannelure sidepiece connects pipeline, in order to discharge drainage agent.
Described withdrawer is made up of sand discharger and guide support, and guide support one end is fixed with sand discharger, and the other end is
Tubular structure, sand discharger is arranged on below long nozzle, is made by the sheet metal of 0.3-10mm bottom sand discharger.
Along being provided with breather on described dregs separating device.
Compared with prior art, the invention has the beneficial effects as follows:
Being applicable to metallurgy industry, including nonferrous metallurgy, overall structure is simple, easy to operate, can effectively control ladle and open when watering,
Drainage agent and middle cinder inclusion are involved in middle Baogang water, reduce in steel and are mingled with, stablize steel, distinct variety quality.By reclaiming
Device realizes reclaiming leaves drainage agent when watering and middle cinder inclusion, waters cap and does not affect pouring molten steel by opening simultaneously, reduces economic loss.
Dregs separating device uses sidewall bascule, plays while slag effect, facilitates molten steel to flow into.
Accompanying drawing explanation
Fig. 1 is the structural representation one of the present invention.
Fig. 2 is the Fig. 1 sectional view along line A-A.
Fig. 3 is dregs separating device structural representation.
Fig. 4 is dregs separating device open mode figure.
Fig. 5 is the structural representation one of withdrawer.
Fig. 6 is present configuration schematic diagram two.
Fig. 7 is the structural representation two of withdrawer.
Fig. 8 is the front view of guide support.
Fig. 9 is the side view of guide support.
Figure 10 is the front view of sand discharger.
Figure 11 is the side view of sand discharger.
Figure 12 is the side view of withdrawer.
In figure: 1-ladle 2-slide gate nozzle 3-long nozzle 4-withdrawer 5-opens and waters cap 6-dregs separating device 7-cover plate 8-
Middle cinder inclusion 9-molten steel 10-pipeline 11-sand discharger 12-guide support.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail, it should be noted that the enforcement of the present invention be not limited to
Under embodiment.
See that Fig. 1-Fig. 5, Con casting ladle 1 open and water the device keeping molten steel 9 cleaning, including the slip being arranged on bottom ladle 1
The mouth of a river 2, is fixed on the long nozzle 3 being connected bottom ladle 1 and with ladle 1, described long nozzle 3 top and slip water
Mouth 2 is tightly connected, and also includes withdrawer 4, dregs separating device 6, and withdrawer 4 is arranged on below long nozzle 3, not with long water
The contact of mouth 3 bottoms, gap is left in centre；Dregs separating device 6 is arranged on below withdrawer 4, and withdrawer 4 is by flowing steel pipe, opening and water
Cap 5, cannelure form, and are fixed with stream steel pipe in the middle of cannelure, and stream steel pipe top is provided with to open waters cap 5；Dregs separating device 6 side of being
Tubular structure, up and down equal open-endeds, for open design, sidewall is made up of refractory material, and wherein a sidewall is cover plate 7, lid
Plate 7 is hinged with adjacent wall top movable.
Wherein, opening and watering cap 5 is the conical structure made by sheet metal, and sheet metal thickness is 0.3-10mm, it is simple to molten steel 9
Erosion leakage；The cannelure sidepiece of withdrawer 4 connects pipeline 10, in order to discharge drainage agent.Withdrawer 4 is bisected into two along axis
Point, and be movably hinged, on the premise of not affecting pouring molten steel, convenient taking-up withdrawer 4.
Seeing Fig. 6, Fig. 8-Figure 12, withdrawer 4 can also be made up of sand discharger 11 and guide support 12, and sand discharger 11 leads to
Crossing guide support 12 and support fixing, sand discharger 11 is arranged on below long nozzle, is shaped like slide, bottom sand discharger 11
Made by the sheet metal of 0.3-10mm, it is simple to the molten steel 9 erosion leakage flowed out from long nozzle 3, concrete thickness is according to practical situation
Determine；Guide support 12 one end supports sand discharger 11, and the other end is tubular structure, in order to drain.During use, by sediment outflow
Device 11 is placed on guide support 12, is then placed on below long nozzle 3 by mechanical hand.Next time props up at water conservancy diversion when using
Placing new sand discharger 11 on frame 12, guide support 12 is reusable.Sand discharger 11 and guide support 12 are alternatively one
Body formula structure, is shown in Fig. 7.
Con casting ladle 1 is opened and is watered the method keeping molten steel 9 cleaning, comprises the following steps:
1) when carrying out first ladle 1 open casting operation, slide gate nozzle 2 is opened, and drainage agent flows out from slide gate nozzle 2,
In Jing Guo, bag long nozzle 3 flows to open and waters above cap 5 or chute 11；
2) drainage agent waters cap 5 upper surface and trickles in the groove of withdrawer 4 recoverys along opening, after drainage agent trickles, and steel
Water 9 flows down, and a part is contaminated with the molten steel 9 of drainage agent and also waters cap 5 upper surface and trickle in drainage agent withdrawer 4 along opening；
Or drainage agent directly reclaims through chute 11, drainage tube 12；Afterwards, open and water cap 5 or chute 11 is lost leakage, steel by molten steel 9
Water 9 is dirty；
3) a tank steel cast terminates, and long nozzle 3 proposes from molten steel 9, cinder inclusion 8 surface in disengaging, is led to by dregs separating device 6
Crossing cinder inclusion 8 to be pressed in middle Baogang water 9, dregs separating device 6 sidewall is pressed in molten steel, and in prevention, cinder inclusion 8 enters into every slag
Device 6 is internal；
4) dregs separating device 6 side turns, and makes the sidewall slope relative with cover plate 7, overcomes frictional force, makes cover plate 7 open, molten steel 9
Entering in dregs separating device 6, along exposing middle cinder inclusion 8 surface on dregs separating device 6, lower edge is immersed in molten steel 9, along having on dregs separating device 6
Breather, to dregs separating device 6 blowing argon gas, protects molten steel 9；
5) change withdrawer 4, second ladle 1 open casting operation, after slide gate nozzle 2 is opened, molten steel 9 through long nozzle 3,
Withdrawer 4, is reclaimed drainage agent by withdrawer 4, opens and waters cap 5 and lost leakage by molten steel 9, and molten steel 9 is dirty, flow into tundish every
In slag device 6 hole；
6) second ladle 1 declines, and drives long nozzle 3 to decline, and long nozzle 3 bottom is immersed in steel through middle dregs separating device 6
In water 9；
7) step 5 is repeated)-step 6) realize next ladle 1 successively and pour into a mould.
The present invention is applicable to metallurgy industry, and including nonferrous metallurgy, overall structure is simple, easy to operate, can effectively control ladle
1 opens when watering, and drainage agent and middle cinder inclusion 8 are involved in middle Baogang water 9, reduces in steel and is mingled with, stablizes steel, distinct variety
Quality.Realize reclaiming by withdrawer 4 and open drainage agent when watering and middle cinder inclusion 8, water cap 5 and do not affect molten steel by opening simultaneously
9 cast, reduce economic loss.
Claims (7)
1. a continuous casting steel is unwrapped and is watered the method keeping molten steel clean, it is characterised in that comprise the following steps:
1) when carrying out first ladle open casting operation, slide gate nozzle is opened, and drainage agent flows out from slide gate nozzle, Jing Guozhong
Bag long nozzle flows to open and waters above cap or chute；
2) drainage agent waters cap upper surface and trickles in the groove of withdrawer recoverys along opening, after drainage agent trickles, and steel flow
Getting off, a part is contaminated with the molten steel of drainage agent and also waters cap upper surface and trickle in drainage agent withdrawer along opening；Or drainage agent
Directly reclaim through chute, drainage tube；Afterwards, open water cap or chute by molten steel erosion leakage, molten steel is dirty；
3) a tank steel cast terminates, and long nozzle proposes from molten steel, cinder inclusion surface in disengaging, by dregs separating device by middle cinder inclusion
Being pressed in Baogang's water, during dregs separating device bottom lock stops, cinder inclusion enters into inside dregs separating device from bottom.
4) dregs separating device side turns, and opens cover plate, and molten steel enters in dregs separating device, along exposing middle cinder inclusion surface, lower edge on dregs separating device
Invade in molten steel, along there being breather on dregs separating device, to dregs separating device blowing argon gas, protect molten steel；
5) change withdrawer, second ladle open casting operation, after slide gate nozzle is opened, molten steel through long nozzle, withdrawer,
Being reclaimed drainage agent by withdrawer, open and water cap by molten steel erosion leakage, molten steel is dirty, flows in tundish dregs separating device hole；
6) second ladle declines, and drives long nozzle to decline, and long nozzle bottom invades in molten steel through middle dregs separating device；
7) step 5 is repeated)-step 6) realize next steel ladle pouring successively.
2. a kind of continuous casting steel realizing method described in claim 1 unwraps the device watering holding molten steel cleaning, including being arranged on
The slide gate nozzle of ladle bottom, is fixed on ladle bottom the long nozzle being connected with ladle, described long nozzle top and cunning
The dynamic mouth of a river is tightly connected, it is characterised in that also include withdrawer, dregs separating device, and withdrawer is arranged on below long nozzle, every slag
Device is arranged on below withdrawer；The dregs separating device side of being tubular structure, sidewall is made up of refractory material, open top, the bottom side of being
Shape cover plate, cover plate is movably hinged with sidewall.
A kind of continuous casting steel the most according to claim 2 is unwrapped and is watered the device keeping molten steel clean, it is characterised in that institute
The withdrawer stated by flow steel pipe, open water cap, cannelure forms, and is fixed with stream steel pipe in the middle of cannelure, stream steel pipe top is provided with
Open and water cap.
A kind of continuous casting steel the most according to claim 3 is unwrapped and is watered the device keeping molten steel clean, it is characterised in that institute
It is the conical structure made by sheet metal that opening of stating waters cap, and sheet metal thickness is 0.3-5mm.
A kind of continuous casting steel the most according to claim 3 is unwrapped and is watered the device keeping molten steel clean, it is characterised in that institute
The cannelure sidepiece stated connects pipeline, in order to discharge drainage agent.
A kind of continuous casting steel the most according to claim 2 is unwrapped and is watered the device keeping molten steel clean, it is characterised in that institute
The withdrawer stated is made up of sand discharger and guide support, and guide support one end is fixed with sand discharger, and the other end is tubulose knot
Structure, sand discharger is arranged on below long nozzle, is made by the sheet metal of 0.3-10mm bottom sand discharger.
A kind of continuous casting steel the most according to claim 2 is unwrapped and is watered the device keeping molten steel clean, it is characterised in that institute
Along being provided with breather on the dregs separating device stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318048.6A CN105921734B (en) | 2016-05-13 | 2016-05-13 | A kind of continuous casting steel unwraps the method poured and keep molten steel cleaning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318048.6A CN105921734B (en) | 2016-05-13 | 2016-05-13 | A kind of continuous casting steel unwraps the method poured and keep molten steel cleaning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105921734A true CN105921734A (en) | 2016-09-07 |
| CN105921734B CN105921734B (en) | 2018-08-31 |
Family
ID=56834964
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610318048.6A Active CN105921734B (en) | 2016-05-13 | 2016-05-13 | A kind of continuous casting steel unwraps the method poured and keep molten steel cleaning |
Country Status (1)
| Country | Link |
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| CN (1) | CN105921734B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944608A (en) * | 2017-04-07 | 2017-07-14 | 东北大学 | Control the device and operating method of molten steel Large Inclusions |
| CN108262472A (en) * | 2017-01-03 | 2018-07-10 | 日轻商菱铝业（昆山）有限公司 | A kind of automatic film-removing technology for aluminium alloy ingots surface film oxide |
| CN110303123A (en) * | 2019-08-02 | 2019-10-08 | 建龙北满特殊钢有限责任公司 | A kind of big packet drainage agent external device |
| CN112170797A (en) * | 2020-09-28 | 2021-01-05 | 本溪市宏业实业有限责任公司 | Method for separating drainage sand and molten steel during ladle casting |
| CN112620622A (en) * | 2020-12-11 | 2021-04-09 | 北京首钢股份有限公司 | Ladle drainage sand separator and tundish |
| CN114799149A (en) * | 2022-04-19 | 2022-07-29 | 中天钢铁集团有限公司 | External ladle drainage sand device and drainage method |
| CN115971467A (en) * | 2023-01-04 | 2023-04-18 | 山东钢铁股份有限公司 | Continuous casting ladle stuffing sand discharging device and using method thereof |
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| JPH03207562A (en) * | 1990-01-10 | 1991-09-10 | Kawasaki Steel Corp | Method for removing ladle sand at the time of starting pouring |
| CN201070669Y (en) * | 2007-06-28 | 2008-06-11 | 濮阳濮耐高温材料（集团）股份有限公司 | Ring shaped air curtain retaining wall |
| CN202129423U (en) * | 2011-05-13 | 2012-02-01 | 鞍钢股份有限公司 | A ladle drainage agent recovery device |
| CN105057654A (en) * | 2015-08-15 | 2015-11-18 | 芜湖新兴铸管有限责任公司 | Operation method for continuous casting external big ladle stuffing sand device |
| CN204975312U (en) * | 2015-07-14 | 2016-01-20 | 河北钢铁股份有限公司邯郸分公司 | Ladle drainage sand clearing device |
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| JPH03207562A (en) * | 1990-01-10 | 1991-09-10 | Kawasaki Steel Corp | Method for removing ladle sand at the time of starting pouring |
| CN201070669Y (en) * | 2007-06-28 | 2008-06-11 | 濮阳濮耐高温材料（集团）股份有限公司 | Ring shaped air curtain retaining wall |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108262472A (en) * | 2017-01-03 | 2018-07-10 | 日轻商菱铝业（昆山）有限公司 | A kind of automatic film-removing technology for aluminium alloy ingots surface film oxide |
| CN106944608A (en) * | 2017-04-07 | 2017-07-14 | 东北大学 | Control the device and operating method of molten steel Large Inclusions |
| CN110303123A (en) * | 2019-08-02 | 2019-10-08 | 建龙北满特殊钢有限责任公司 | A kind of big packet drainage agent external device |
| CN112170797A (en) * | 2020-09-28 | 2021-01-05 | 本溪市宏业实业有限责任公司 | Method for separating drainage sand and molten steel during ladle casting |
| CN112620622A (en) * | 2020-12-11 | 2021-04-09 | 北京首钢股份有限公司 | Ladle drainage sand separator and tundish |
| CN114799149A (en) * | 2022-04-19 | 2022-07-29 | 中天钢铁集团有限公司 | External ladle drainage sand device and drainage method |
| CN115971467A (en) * | 2023-01-04 | 2023-04-18 | 山东钢铁股份有限公司 | Continuous casting ladle stuffing sand discharging device and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105921734B (en) | 2018-08-31 |
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