CN110218835A - The device and smelting process of inclusion removal under a kind of slag interface - Google Patents
The device and smelting process of inclusion removal under a kind of slag interface Download PDFInfo
- Publication number
- CN110218835A CN110218835A CN201910489538.6A CN201910489538A CN110218835A CN 110218835 A CN110218835 A CN 110218835A CN 201910489538 A CN201910489538 A CN 201910489538A CN 110218835 A CN110218835 A CN 110218835A
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- CN
- China
- Prior art keywords
- solid dielectric
- steel
- smelting process
- slag
- inclusion
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses the devices and smelting process of inclusion removal under a kind of slag interface, described device includes rotating arm (1), bell (2), solid dielectric (3), the rotating arm (1) connect with bell (2), bell (2) if medial surface on be vertically arranged dry solid medium.The smelting process is the following steps are included: be implanted into or be inserted into solid dielectric below slag interface, pass through the soft blow argon or electromagnetic agitation or standing of molten steel, it is adsorbed on the non-metallic inclusion being suspended near steel slag in molten steel on solid dielectric, takes out solid dielectric and have the function that remove inclusion content in melting steel.The present invention not only solves deficiency existing for the absorption of steel slag in current general smelting process, also provides theoretical direction to reduce the cleanliness of steel inclusion quantity, raising molten steel.
Description
Technical field
The invention belongs to metallurgical technology field, it is related to the device and smelting process of inclusion removal under a kind of slag interface.
Background technique
Nonmetallic inclusionsin steel results from smelting and the process of setting of molten steel, and the meeting in subsequent rolling process
A series of variation occurs.Non-metallic inclusion has extremely complex influence, content, type, composition, shape to the quality of steel
State, size and distribution can all influence the performance of steel, and the overwhelming majority is detrimental effect.Therefore, in order to improve steel
Quality and performance, control and the non-metallic inclusion removed in smelting process have great importance to the production of clean steel.
The main conventional processing technique that production clean steel reduces nonmetallic inclusionsin steel has: 1) blast-melted full dose
" three is de- " pretreating process；2) efficiently blowing, low [O] smelt；3) slag free tapping is used, and uses tapping process slag modification skill
Art；4) furnace outer refining technology is widely used；5) whole process protection placingJi Shu is used；6) tundish metallurgy.Wherein main principle
It exactly reduces field trash and enters molten steel and field trash discharge molten steel.There are many fruitful new skills in terms of field trash is discharged
Art, new process, ladle argon-blown technology, electromagnetic agitating technology, vacuum processing techniques, field trash modification technology etc., steel-making i.e. refining slag,
The research of clinker is also being continued always.
In clean steel smelting process, non-metallic inclusion in molten steel collides mutually to moving at slag interface,
Part field trash enters in steel slag, some is suspended in the molten steel of steel slag, cannot be discharged, stay in steel by casting
In material, become impurity, strong influence is caused to steel product quality.If control is bad, it is easy to molten steel " set eye " occur especially
It is " set eye " technology accident caused by causing molten steel " wadding flows " due to the enrichment of molten steel non-metallic inclusion in the later period.
The present invention not only solves deficiency existing for the absorption of steel slag in current general smelting process, also presss from both sides to reduce in steel
Sundries quantity, the cleanliness for improving molten steel provide theoretical direction.
Summary of the invention
The object of the present invention is to provide a kind of device and methods of inclusion removal under slag interface.It is non-in molten steel
Metallic inclusion collides mutually to moving at slag interface, and part field trash enters in steel slag, some is suspended in
In the molten steel of steel slag, it cannot be discharged, be stayed in steel by casting, become impurity, great shadow is caused to steel product quality
It rings.The present invention not only solves deficiency existing for the absorption of steel slag in current general smelting process, is also reduction steel inclusion
The quantity of field trash, the cleanliness for improving molten steel provide theoretical direction under quantity, particularly slag interface.
In order to achieve the above objectives, present invention employs the following technical solutions:
The device of inclusion removal under a kind of slag interface, described device includes rotating arm 1, bell 2, solid dielectric 3, institute
It states rotating arm 1 to connect with bell 2, if being vertically arranged dry solid medium on the medial surface of bell 2.
Preferably, the shape of the solid dielectric is cylindrical, tubular or sheet.The shape of solid dielectric can be greatly
Adsorption effect is influenced, specific surface area is bigger with steel contacts, and adsorption effect is better.
Preferably, the making material of the solid dielectric is aluminum oxide or ceramics.Aluminum oxide material absorption three
Al 2 O field trash, calcium sulfide, spinels etc., other ceramics, resistance to materials etc. also to such as aluminum oxide of the field trash in steel,
Calcium sulfide, spinels etc. generate suction-operated.
The present invention also provides a kind of smelting process of inclusion removal under slag interface, the smelting process includes following
Step:
Be implanted into or be inserted into solid dielectric below slag interface is made by the soft blow argon or electromagnetic agitation or standing of molten steel
It is suspended in the non-metallic inclusion near steel slag in molten steel to be adsorbed on solid dielectric, takes out solid dielectric and reaches removal molten steel
The effect of middle field trash.
Preferably, the shape of the solid dielectric is cylindrical, tubular or sheet.
Preferably, the making material of the solid dielectric is aluminum oxide or ceramics.
Preferably, the time of the soft blow argon or electromagnetic agitation or standing is 5-50 minutes.
In the present invention, the non-metallic inclusion includes aluminum oxide field trash, a kind of or more in calcium sulfide field trash
Kind, the non-metallic inclusion further includes spinels field trash.
The present invention provides a kind of smelting processes of inclusion removal under slag interface, by being inserted into below slag interface
Or the solid dielectric of other implantation makes in molten steel one by the soft stirring such as the soft blow argon of molten steel, electromagnetism or standing a period of time
Divide the non-metallic inclusion for being suspended in close steel slag to be adsorbed on solid dielectric, has the function that be mingled in removal molten steel.
It is implanted as being fixed on certain position in ladle in the present invention.
The present invention can adsorb different non-metallic inclusions using different solid dielectrics as needed.
Compared with prior art, technical solution of the present invention has the advantage that
(1) present invention is an effective supplement of existing process for making, provides one newly to the removal of foreign substance in molten steel
Thinking and direction.
(2) on the basis of the field trash of existing control molten steel, the present invention can be further reduced the amount of inclusions in steel,
Improve the cleanliness of molten steel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of device of the present invention；
Fig. 2 is the schematic diagram that solid dielectric of the present invention is inserted into ladle.
Appended drawing reference: 1, rotating arm；2, bell；3, solid dielectric；4, ladle；5, steel slag；6, molten steel.
Specific embodiment
Any feature is disclosed to obtain in this specification, it unless specifically stated, can be equivalent or with similar purpose by other
Alternative features are replaced.Unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
?.It is described to understand the present invention just for the sake of help, it should not be considered as to concrete restriction of the invention.
With the drawings and specific embodiments, the present invention is described in further detail below.
Embodiment 1
As Figure 1-Figure 2, under a kind of slag interface inclusion removal device, described device includes rotating arm 1, bell
2, solid dielectric 3, the rotating arm 1 is connect with bell 2, if being vertically arranged dry solid medium on the medial surface of bell 2.
The shape of the solid dielectric is cylindrical, tubular or sheet.The making material of the solid dielectric is three oxygen
Change two aluminium or ceramics.
The smelting process of inclusion removal under a kind of slag interface passes through insertion or other implantation below 5 interface of steel slag
Solid dielectric 3 so that a part is suspended by the soft stirring such as the soft blow argon of molten steel 6, electromagnetism or standing 5-50 minute
It is adsorbed on solid dielectric in the non-metallic inclusion close to steel slag, has the function that be mingled in removal molten steel.
Embodiment 2
The present invention is applied to electric furnace+LF refining+VD refining+continuous casting and carries out aluminum killed steel being produced, in VD at base production technology
Using a kind of solid dielectric of the resistance to material manufacture of aluminum oxide matter after refining, using 1 described device of embodiment, by aluminum oxide
The resistance to material of matter is inserted into molten steel 50cm, soft blow argon 10 minutes, solid dielectric is proposed molten steel, it can be found that the aluminum oxide matter table of resistance to material
Face is adsorbed with the largely field trash based on aluminum oxide, to reach the mesh that aluminum oxide is mingled in removal steel
's.
Using the device of the invention and smelting process, as a supplement of normal smelting process, according to time, heat smelting
The ability of the difference of sweetening process, steel quality, dross inclusion adsorption is also different.It generally can achieve the absorption of 1~10mg/10kg
Amount.
Embodiment 3
The present invention is applied to electric furnace+LF refining+VD refining+continuous casting and carries out aluminum killed steel being produced, in VD at base production technology
Using the solid dielectric of ceramics manufacture after refining, solid dielectric is fixed on 40cm under the steel slag liquid level in ladle 4, stirring 50
Minute, solid dielectric is taken out, it can be found that ceramic resistance to material surface is adsorbed with a large amount of aluminum oxide field trash, calcium sulfide folder
Sundries, to achieve the purpose that remove aluminum oxide field trash, calcium sulfide field trash in steel.
Technological parameter (such as temperature, time) section bound value of the invention and interval value can realize this law,
Embodiment numerous to list herein.
Ordinary skill in the art knowledge can be used in the unspecified content of the present invention.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, it will be apparent to an ordinarily skilled person in the art that technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (8)
1. the device of inclusion removal under a kind of slag interface, which is characterized in that described device includes rotating arm (1), bell
(2), solid dielectric (3), the rotating arm (1) connect with bell (2), bell (2) if medial surface on be vertically arranged dry solid
Medium.
2. the apparatus according to claim 1, which is characterized in that the shape of the solid dielectric be cylindrical, tubular or
Sheet.
3. the apparatus according to claim 1, which is characterized in that the making material of the solid dielectric be aluminum oxide or
Ceramics.
4. the smelting process of inclusion removal under a kind of slag interface, the smelting process the following steps are included:
Being implanted into or be inserted into solid dielectric below slag interface makes molten steel by the soft blow argon or electromagnetic agitation or standing of molten steel
In the non-metallic inclusion that is suspended near steel slag be adsorbed on solid dielectric, take out solid dielectric and reach and is pressed from both sides in removal molten steel
The effect of sundries.
5. smelting process according to claim 4, which is characterized in that the shape of the solid dielectric is cylindrical, round tube
Shape or sheet.
6. smelting process according to claim 4, which is characterized in that the making material of the solid dielectric is three oxidations two
Aluminium or ceramics.
7. smelting process according to claim 4, which is characterized in that the time of the soft blow argon or electromagnetic agitation or standing
It is 5-50 minutes.
8. smelting process according to claim 4, which is characterized in that the non-metallic inclusion includes aluminum oxide folder
One or more in sundries, calcium sulfide field trash, the non-metallic inclusion further includes spinels field trash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489538.6A CN110218835A (en) | 2019-06-06 | 2019-06-06 | The device and smelting process of inclusion removal under a kind of slag interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489538.6A CN110218835A (en) | 2019-06-06 | 2019-06-06 | The device and smelting process of inclusion removal under a kind of slag interface |
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| Publication Number | Publication Date |
|---|---|
| CN110218835A true CN110218835A (en) | 2019-09-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910489538.6A Pending CN110218835A (en) | 2019-06-06 | 2019-06-06 | The device and smelting process of inclusion removal under a kind of slag interface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893246A (en) * | 2020-07-29 | 2020-11-06 | 浙江友谊新材料有限公司 | Steel ladle assembly for transferring and purifying molten steel |
| CN112045179A (en) * | 2020-09-04 | 2020-12-08 | 江苏隆达超合金航材有限公司 | Reusable scum salvaging device and scum salvaging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2496580Y (en) * | 2001-08-28 | 2002-06-26 | 宝山钢铁股份有限公司 | Middle ladle absorbing apparatus |
| CN2813158Y (en) * | 2005-07-29 | 2006-09-06 | 宝山钢铁股份有限公司 | Pouring basket filter |
| CN202667580U (en) * | 2012-07-15 | 2013-01-16 | 鞍钢股份有限公司 | Device for purifying molten steel in tundish |
| CN103008636A (en) * | 2013-01-21 | 2013-04-03 | 河北联合大学 | Gun insertion type stopper rod device and method using same for absorbing inclusions at gate |
-
2019
- 2019-06-06 CN CN201910489538.6A patent/CN110218835A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2496580Y (en) * | 2001-08-28 | 2002-06-26 | 宝山钢铁股份有限公司 | Middle ladle absorbing apparatus |
| CN2813158Y (en) * | 2005-07-29 | 2006-09-06 | 宝山钢铁股份有限公司 | Pouring basket filter |
| CN202667580U (en) * | 2012-07-15 | 2013-01-16 | 鞍钢股份有限公司 | Device for purifying molten steel in tundish |
| CN103008636A (en) * | 2013-01-21 | 2013-04-03 | 河北联合大学 | Gun insertion type stopper rod device and method using same for absorbing inclusions at gate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893246A (en) * | 2020-07-29 | 2020-11-06 | 浙江友谊新材料有限公司 | Steel ladle assembly for transferring and purifying molten steel |
| CN111893246B (en) * | 2020-07-29 | 2021-10-01 | 浙江友谊新材料有限公司 | Steel ladle assembly for transferring and purifying molten steel |
| CN112045179A (en) * | 2020-09-04 | 2020-12-08 | 江苏隆达超合金航材有限公司 | Reusable scum salvaging device and scum salvaging method |
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Application publication date: 20190910 |
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