CN105921734B - A kind of continuous casting steel unwraps the method poured and keep molten steel cleaning - Google Patents
A kind of continuous casting steel unwraps the method poured and keep molten steel cleaning Download PDFInfo
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- CN105921734B CN105921734B CN201610318048.6A CN201610318048A CN105921734B CN 105921734 B CN105921734 B CN 105921734B CN 201610318048 A CN201610318048 A CN 201610318048A CN 105921734 B CN105921734 B CN 105921734B
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- molten steel
- steel
- separating device
- recover
- dregs separating
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The present invention relates to a kind of continuous casting steels to unwrap the method poured and keep molten steel cleaning, and when ladle open casting operation, slide gate nozzle is opened, and drainage agent is from slide gate nozzle outflow, and packet long nozzle is flowed to open and be poured above cap in；Drainage agent pours the trickling of cap upper surface to recycling in recover along opening, and after drainage agent trickle, molten steel flows down, and a part is contaminated with the molten steel of drainage agent and also pours cap upper surface and trickle into drainage agent recover along opening；Later, it opens to pour cap and lost by molten steel and leak, molten steel flows down；The cast of one tank steel terminates, and long nozzle is proposed from molten steel, cinder inclusion surface in disengaging, dregs separating device is pressed by middle cinder inclusion in middle Baogang's water, dregs separating device side wall is pressed into molten steel, and cinder inclusion enters inside dregs separating device in prevention；It replaces recover and carries out next steel ladle pouring.Advantage：Overall structure is simple, easy to operate, can effectively control ladle and open when pouring, and drainage agent and middle cinder inclusion are involved in middle Baogang's water, are reduced and are mingled in steel, and steel is stablized.
Description
Technical field
The present invention relates to a kind of continuous casting steels to unwrap the method poured and keep molten steel cleaning.
Background technology
Currently, molten steel is cast steel billet by smelter especially iron and steel enterprise using continuous casting process.Molten steel warp in ladle
The outflow of ladle bottom slide gate nozzle is crossed, tundish, long nozzle lower end are flowed by the middle packet long nozzle coupled below slide gate nozzle
It is embedded under molten steel face, then is flowed out to through tundish and form strand in crystallizer.
Continuous casting even pours in production process, and the molten steel in a ladle is flow to end, and ladle is removed.The side of wrapping during next ladle is put into,
It is proposed that long nozzle, long nozzle lower end leave molten steel face, long nozzle upper end couples with slide gate nozzle.Operate slide gate nozzle, steel flow
Go out.Declining ladle makes long nozzle lower end be embedded under molten steel face.Such process causes the drainage agent in slide gate nozzle and middle cinder inclusion quilt
It is largely involved in middle Baogang's water, seriously pollutes molten steel, formation is mingled with.Currently, there is no fine solution both at home and abroad.To ensure steel
Quality by the steel billet of this process contamination, will degrade or sentence useless, and economic loss is huge, and cannot thoroughly eliminate the influence of this process.Through
Measuring and calculating only opens to pour to be mingled with and just accounts for all 70%-80% being mingled with of ladle, therefore can reduce or even avoid to open and pour that be mingled be to solve
The key of Inclusion Problem.
There are a kind of method in foreign countries：It is first poured in middle packet external-open, after molten steel outflow is a certain amount of, closes slide gate nozzle, move on to Zhong Bao
Interior top declines ladle, after long nozzle lower end is embedded under molten steel face, opens pour again.It can be greatly decreased and be mingled in this way, but economic damage
It loses still huge.
Invention content
In order to overcome the deficiencies of the prior art, it unwraps to pour the object of the present invention is to provide a kind of continuous casting steel and keeps molten steel cleaning
Method solves the problems, such as that ladle is opened and is mingled with drainage agent and middle cinder inclusion when pouring, Baogang's water rubbish pollution in reduction.
To achieve the above object, the invention is realized by the following technical scheme：
A kind of continuous casting steel unwraps the method poured and keep molten steel cleaning, realizes that the continuous casting steel of the method is unwrapped and pours holding molten steel
Clean device, including the slide gate nozzle in ladle bottom is set, the long nozzle for being fixed on ladle bottom and being connected with ladle,
The long nozzle top is tightly connected with slide gate nozzle, further includes recover, dregs separating device, and recover is arranged under long nozzle
Side, dregs separating device are arranged below recover；Dregs separating device is square tube shape structure, up and down equal open-ended, is open design, side wall is by resistance to
Fiery material is made, and wherein one side wall is cover board, and cover board is hinged with adjacent wall top movable；
The recover by stream steel pipe, open pour cap, annular groove forms, and is fixed with stream steel pipe among annular groove, flow steel pipe
Top, which is equipped with to open, pours cap；
It the described method comprises the following steps：
1) when carrying out first ladle open casting operation, slide gate nozzle is opened, and drainage agent is flowed out from slide gate nozzle, in
Packet long nozzle is flowed to open and be poured above cap or sliding slot；
2) drainage agent edge is opened to pour and be recycled in the trickling to the groove of recover of cap upper surface, after drainage agent trickles, molten steel
Flow down, a part is contaminated with the molten steel of drainage agent and also pours in the trickling to drainage agent recover of cap upper surface along opening；Or drainage
Agent is directly recycled through sliding slot, drainage tube；Later, it opens to pour cap or sliding slot and lost by molten steel and leak, molten steel flows down；
3) tank steel cast terminates, and long nozzle is proposed from molten steel, cinder inclusion surface in disengaging, and dregs separating device is passed through middle cinder inclusion
It is pressed into Baogang's water, cinder inclusion is entered from bottom inside dregs separating device during dregs separating device bottom lock prevents；
4) dregs separating device side turns, and opens cover board, and molten steel enters in dregs separating device, cinder inclusion surface during dregs separating device upper edge is exposed, lower edge
It invades in molten steel, dregs separating device upper edge has snorkel, to dregs separating device blowing argon gas, protects molten steel；
5) recover is replaced, second ladle open casting operation, after slide gate nozzle is opened, molten steel passes through long nozzle, recover,
Drainage agent is recycled by recover, opens to pour cap and lost by molten steel and leak, molten steel flows down, and flows into tundish dregs separating device hole；
6) second ladle declines, and drives long nozzle to decline, long nozzle lower part is invaded across middle dregs separating device in molten steel；
7) it repeats step 5)-step 6) and realizes next steel ladle pouring successively.
Described to open that pour cap be the conical structure made by sheet metal, sheet metal thickness is 0.3-5mm.
The annular groove side connecting pipe, drainage agent is discharged.
The recover is made of sand discharger and guide support, and guide support one end is fixed with sand discharger, another
End is tubular structure, and sand discharger is arranged below long nozzle, and sand discharger bottom is made by the sheet metal of 0.3-10mm.
The dregs separating device upper edge is equipped with snorkel.
Compared with prior art, the beneficial effects of the invention are as follows：
Suitable for metallurgy industry, including nonferrous metallurgy, overall structure is simple, easy to operate, can effectively control ladle and opens and pour
When, drainage agent and middle cinder inclusion are involved in middle Baogang's water, are reduced and are mingled in steel, and steel, distinct variety quality are stablized.Pass through recycling
Device realizes that drainage agent and middle cinder inclusion when pouring are opened in recycling, while pouring cap by opening and do not influence pouring molten steel, reduces economic loss.
Dregs separating device uses side wall bascule, plays the role of while slag, molten steel being facilitated to flow into.
Description of the drawings
Fig. 1 is the structural schematic diagram one of the present invention.
Fig. 2 is sectional views of the Fig. 1 along line A-A.
Fig. 3 is dregs separating device opening state schematic diagram.
Fig. 4 is dregs separating device structural schematic diagram.
Fig. 5 is the structural schematic diagram one of recover.
Fig. 6 is schematic structural view of the invention two.
Fig. 7 is the structural schematic diagram two of recover.
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 recover.
In figure：1- ladle 2- slide gate nozzle 3- long nozzle 4- recovers 5-, which is opened, pours cap 6- dregs separating device 7- cover boards 8-
Middle cinder inclusion 9- molten steel 10- pipelines 11- sand discharger 12- guide supports.
Specific implementation mode
The present invention is described in detail with reference to the accompanying drawings of the specification, it should be noted that the implementation of the present invention is unlimited
In the following embodiments and the accompanying drawings.
See Fig. 1-Fig. 5, Con casting ladle 1 opens the device for pouring and keeping molten steel 9 clean, including the sliding in 1 bottom of ladle is arranged
The mouth of a river 2, the long nozzle 3 for being fixed on 1 bottom of ladle and being connected with ladle 1,3 top of long nozzle and slide gate nozzle 2 are close
Envelope connection further includes recover 4, dregs separating device 6, and recover 4 is arranged below long nozzle 3, is not contacted with 3 bottom end of long nozzle,
There are gaps for centre；Dregs separating device 6 be arranged below recover 4, recover 4 by stream steel pipe, open pour cap 5, annular groove forms, annular
Stream steel pipe is fixed among slot, stream steel pipe top, which is equipped with to open, pours cap 5；Dregs separating device 6 is square tube shape structure, up and down equal open-ended, is
Open design, side wall are made of refractory material, and wherein one side wall is cover board 7, and cover board 7 is hinged with adjacent wall top movable.
Wherein, it is the conical structure made by sheet metal to open and pour cap 5, and sheet metal thickness is 0.3-10mm, is convenient for molten steel 9
Erosion leakage；The annular groove side connecting pipe 10 of recover 4, drainage agent is discharged.Recover 4 is bisected into two parts along axis,
And be movably hinged, under the premise of not influencing pouring molten steel, facilitates and take out recover 4.
See that Fig. 6, Fig. 8-Figure 12, recover 4 can also be made of sand discharger 11 and guide support 12, sand discharger 11 is by leading
It flows the support of holder 12 to fix, sand discharger 11 is arranged below long nozzle, is shaped like slide, 11 bottom of sand discharger is by 0.3-
The sheet metal of 10mm makes, and convenient for the erosion leakage of molten steel 9 flowed out from long nozzle 3, specific thickness is determines according to actual conditions；Water conservancy diversion branch
12 one end of frame supports sand discharger 11, and the other end is tubular structure, to drain.In use, sand discharger 11 is placed on water conservancy diversion branch
On frame 12,3 lower section of long nozzle is then manually placed at by machinery.Next time places new sand discharger when using on guide support 12
11, guide support 12 is reusable.Sand discharger 11 and guide support 12 or integral structure, are shown in Fig. 7.
Con casting ladle 1 opens the method poured and keep molten steel 9 clean, includes the following steps：
1) when carrying out first 1 open casting operation of ladle, slide gate nozzle 2 is opened, and drainage agent is flowed out from slide gate nozzle 2, warp
It crosses packet long nozzle 3 and flows to open and pour above cap 5 or sliding slot 11；
2) drainage agent edge is opened to pour and be recycled in the trickling to the groove of recover 4 of 5 upper surface of cap, after drainage agent trickles, steel
Water 9 flows down, and a part is contaminated with the molten steel 9 of drainage agent and also pours in the trickling to drainage agent recover 4 of 5 upper surface of cap along opening；Or
Person's drainage agent is directly recycled through sliding slot 11, drainage tube 12；Later, it opens to pour cap 5 or sliding slot 11 and lost by molten steel 9 and leak, molten steel 9 flows down；
3) tank steel cast terminates, and long nozzle 3 is proposed from molten steel 9,8 surface of cinder inclusion in disengaging, during dregs separating device 6 is passed through
Cinder inclusion 8 is pressed into middle Baogang's water 9, and 6 side wall of dregs separating device is pressed into molten steel, and cinder inclusion 8 enters inside dregs separating device 6 in prevention；
4) 6 side of dregs separating device turn, make the sidewall slope opposite with cover board 7, overcome frictional force, make cover board 7 open, molten steel 9 into
Into dregs separating device 6,8 surface of cinder inclusion during 6 upper edge of dregs separating device is exposed, lower edge is immersed in molten steel 9, and 6 upper edge of dregs separating device has snorkel, to
6 blowing argon gas of dregs separating device protects molten steel 9；
5) recover 4 is replaced, second 1 open casting operation of ladle, after slide gate nozzle 2 is opened, molten steel 9 passes through long nozzle 3, returns
Device 4 is received, drainage agent is recycled by recover 4, opens to pour cap 5 and lost by molten steel 9 and leak, molten steel 9 flows down, and flows into 6 hole of tundish dregs separating device；
6) second ladle 1 declines, and drives long nozzle 3 to decline, 3 lower part of long nozzle is immersed in molten steel 9 across middle dregs separating device 6
In；
7) it repeats step 5)-step 6) and realizes that next ladle 1 is poured into a mould successively.
The present invention is suitable for metallurgy industry, including nonferrous metallurgy, and overall structure is simple, easy to operate, can effectively control steel
Packet 1 is opened when pouring, and drainage agent and middle cinder inclusion 8 are involved in middle Baogang's water 9, is reduced and is mingled in steel, and steel, distinct variety matter are stablized
Amount.It realizes that drainage agent and middle cinder inclusion 8 when pouring are opened in recycling by recover 4, while being poured into a mould by opening to pour cap 5 not and influence molten steel 9,
Reduce economic loss.
Claims (5)
1. a kind of continuous casting steel unwraps the method poured and keep molten steel cleaning, realizes that the continuous casting steel of the method is unwrapped to pour and keep molten steel clean
Net device, including the slide gate nozzle in ladle bottom is set, the long nozzle for being fixed on ladle bottom and being connected with ladle, institute
The long nozzle top stated is tightly connected with slide gate nozzle, further includes recover, dregs separating device, and recover is arranged below long nozzle,
Dregs separating device is arranged below recover；It is characterized in that, dregs separating device is square tube shape structure, equal open-ended, is open design up and down,
Side wall is made of refractory material, and wherein one side wall is cover board, and cover board is hinged with adjacent wall top movable；
The recover by stream steel pipe, open pour cap, annular groove forms, and is fixed with stream steel pipe among annular groove, flow steel pipe top
Cap is poured equipped with opening；
It the described method comprises the following steps：
1) when carrying out first ladle open casting operation, slide gate nozzle is opened, and drainage agent is flowed out from slide gate nozzle, and length is wrapped in
The mouth of a river flows to open and pour above cap or sliding slot；
2) drainage agent edge is opened to pour and be recycled in the trickling to the groove of recover of cap upper surface, after drainage agent trickles, under steel flow
Come, a part is contaminated with the molten steel of drainage agent and also pours in the trickling to drainage agent recover of cap upper surface along opening；Or drainage agent is straight
It connects through sliding slot, drainage tube recycling；Later, it opens to pour cap or sliding slot and lost by molten steel and leak, molten steel flows down；
3) tank steel cast terminates, and long nozzle is proposed from molten steel, cinder inclusion surface in disengaging, and dregs separating device is pressed by middle cinder inclusion
Into middle Baogang's water, cinder inclusion is entered from bottom inside dregs separating device during dregs separating device bottom lock prevents；
4) dregs separating device side turns, and opens cover board, and molten steel enters in dregs separating device, and cinder inclusion surface during dregs separating device upper edge is exposed, lower edge is invaded
In molten steel, dregs separating device upper edge has snorkel, to dregs separating device blowing argon gas, protects molten steel；
5) recover is replaced, second ladle open casting operation, after slide gate nozzle is opened, molten steel is by long nozzle, recover, by returning
It receives device and recycles drainage agent, open to pour cap and lost by molten steel and leak, molten steel flows down, and flows into tundish dregs separating device hole；
6) second ladle declines, and drives long nozzle to decline, long nozzle lower part is invaded across middle dregs separating device in molten steel；
7) it repeats step 5)-step 6) and realizes next steel ladle pouring successively.
2. a kind of continuous casting steel according to claim 1 unwraps the method poured and keep molten steel cleaning, which is characterized in that described
It is the conical structure made by sheet metal to open and pour cap, and sheet metal thickness is 0.3-5mm.
3. a kind of continuous casting steel according to claim 1 unwraps the method poured and keep molten steel cleaning, which is characterized in that described
Annular groove side connecting pipe, drainage agent is discharged.
4. a kind of continuous casting steel according to claim 1 unwraps the method poured and keep molten steel cleaning, which is characterized in that described
Recover is made of sand discharger and guide support, and guide support one end is fixed with sand discharger, and the other end is tubular structure, row
Sand device is arranged below long nozzle, and sand discharger bottom is made by the sheet metal of 0.3-10mm.
5. a kind of continuous casting steel according to claim 1 unwraps the method poured and keep molten steel cleaning, which is characterized in that described
Dregs separating device upper edge is equipped with snorkel.
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 |
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| CN105921734A CN105921734A (en) | 2016-09-07 |
| CN105921734B true CN105921734B (en) | 2018-08-31 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN106944608B (en) * | 2017-04-07 | 2019-07-30 | 东北大学 | Control the device and operating method of molten steel Large Inclusions |
| CN110303123B (en) * | 2019-08-02 | 2021-08-13 | 建龙北满特殊钢有限责任公司 | External device for large package drainage agent |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | Recovery device for ladle drainage agent |
| 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 |
| 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 |
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