CN106041006A - Continuous casting tundish covering agent of Mn-containing and Al-containing steel and application thereof - Google Patents
Continuous casting tundish covering agent of Mn-containing and Al-containing steel and application thereof Download PDFInfo
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- CN106041006A CN106041006A CN201610647939.6A CN201610647939A CN106041006A CN 106041006 A CN106041006 A CN 106041006A CN 201610647939 A CN201610647939 A CN 201610647939A CN 106041006 A CN106041006 A CN 106041006A
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- steel
- continuous casting
- tundish covering
- covering flux
- tundish
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
Abstract
The invention discloses a continuous casting tundish covering agent of Mn-containing and Al-containing steel and an application thereof. The continuous casting tundish covering agent of the Mn-containing and Al-containing steel comprises, in mass percentage, 34-43% of CaO, 12-24% of Al2O3, 6-14% of SiO2, 2-5% of MgO, 6-12% of Na2O, 3-7% of Li2O, 5-12% of F<->, 2-8% of BaO, 1-3% of MnO, 2-4% of Ce2O3 and 0.9-2.2% of C. The continuous casting tundish covering agent has the characteristics that the melting temperature is low, the viscosity is low and the basicity is high. The tundish covering agent is suitable for continuous casting of the Mn-containing and Al-containing steel with the mass percentage of C being 0.14-0.20%, the mass percentage of Al being 1.5-2.5% and the mass percentage of Mn being 21.5-25.0%. By applying the tundish covering agent to the continuous casting production process, inclusions in the Mn-containing and Al-containing steel can be absorbed efficiently, the cleanliness of molten steel in tundishes can be improved, secondary oxidation of the molten steel can be well prevented, recarburization of the molten steel can be well prevented, the quality of casting blanks can be improved, and the thermal insulation property is good.
Description
Technical field
The present invention relates to a kind of containing Mn, Al steel Tundish Covering Flux for Continuous Casting and application thereof；Belong to continuous casting of iron and steel technical field.
Background technology
Tundish covering flux is functional material important in casting process.Tundish covering flux plays in continuous casting production
Adiabatic heat-insulation, prevent liquid level from crusting, isolation air, prevent secondary oxidation of steel, and absorb the important function such as nonmetal inclusion.
Therefore, in smelting process, casting process is smoothed out by tundish covering flux and steel product quality all has significant effect.
Adding alloying element in steel is the common methods improving steel product quality, but adds alloying element to its production process band
Carry out adverse effect.Owing to making it occur in that problems in process of production containing high alumina high Mn content in Mn, Al steel: Al in steel
SiO easily and in tundish covering flux2Deng there is redox reaction, causing coverture degeneration, making Al in coverture2O3Content increases
Add, SiO2Content reduces, and basicity becomes big, and fusing point, viscosity increase；Active element in molten steel also can with in molten steel dissolve oxygen and
Nitrogen reacts, and generates A12O3, the field trash such as AIN, MnO enters in tundish covering flux.If the very conference of its amount causes tundish to cover
Agent composition transfer, further results in the characteristics such as tundish covering flux viscosity, fusion temperature and notable change, tundish covering flux occurs
Heat insulation function, absorption field trash ability are greatly reduced, thus cause various strand problem.
From the point of view of the situation of literature search, although the patent of tundish covering flux research at present and exploitation is many, but almost
Not for the special tundish covering flux containing Mn, Al steel.Such as the patent of Publication No. CN 104858381 A is " a kind of new
Type Aluminum steel Tundish Covering Flux for Continuous Casting and application thereof ", although consider that the element al in Aluminum steel and melts in continuous casting production
During melting tundish covering flux contact, partial oxide anti-life can aoxidize also in slag/steel interface with tundish covering flux
Former reaction, but do not consider the impact of active element Mn, therefore be not suitable for containing Mn, Al steel.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the deficiencies in the prior art, it is provided that one can contain in more efficient absorption
Field trash in Mn, Al steel, improves the cleanliness factor of molten steel in tundish, preferably prevents molten steel secondary oxidation, prevents carburetting, change
Kind slab quality, have simultaneously the features such as good heat-insulating property containing Mn, Al steel Tundish Covering Flux for Continuous Casting and application thereof.
The present invention containing Mn, Al steel Tundish Covering Flux for Continuous Casting, by percentage to the quality, including following key component:
CaO 34 ~ 43%, preferably 36～42%, more preferably 38～41%；
Al2O312 ~ 24%, preferably 13～21%, more preferably 15～20%；
SiO26 ~ 14%, preferably 7～13%, more preferably 8～12%；
MgO 2 ~ 5%, preferably 3～4.5%, more preferably 3.5～4%；
Na2O 6 ~ 12%, preferably 7～11%, more preferably 7.5～10%；
Li2O 3 ~ 7%, preferably 4～6.5%, more preferably 4.5～6%；
F-5 ~ 12%, preferably 7～11%, more preferably 8～10%；
BaO 2 ~ 8%, preferably 3～7%, more preferably 4～6%；
MnO1～3%, preferably 1.5～2.8%, more preferably 1.8～2.5%；
Ce2O32～4%, preferably 2.2～3.8%, more preferably 2.5～3.5%；
C 0.9 ~ 2.2%, preferably 1.1～2.1%, more preferably 1.2～1.8%.
Of the present invention containing in Mn, Al steel Tundish Covering Flux for Continuous Casting, CaO and SiO2Mass ratio is 3.17 ~ 7.17:1.
Of the present invention containing in Mn, Al steel Tundish Covering Flux for Continuous Casting, Na2O and Li2The mass ratio of O is 0.86 ~ 4:1, excellent
Elect 1.08 ~ 2.75:1 as, more preferably 1.25～2.22:1.
Of the present invention containing Mn, Al steel Tundish Covering Flux for Continuous Casting, its melting range is 1195 ~ 1305 DEG C, 1300 DEG C
Viscosity is 0.7 ~ 1.3 Pa s.This tundish covering flux has that melting temperature is low, viscosity is low, basicity high.
Application containing Mn, Al steel Tundish Covering Flux for Continuous Casting of the present invention, including being used as containing Mn, Al steel continuous casting production
Coverture.
Application containing Mn, Al steel Tundish Covering Flux for Continuous Casting of the present invention, described containing in Mn, Al steel, C percent mass contains
Amount is 0.14 ~ 0.20%.
Application containing Mn, Al steel Tundish Covering Flux for Continuous Casting of the present invention, described contains containing Al percent mass in Mn, Al steel
Amount is 1.5 ~ 2.5%, and Mn weight/mass percentage composition is 21.5 ~ 25.0%.
Principle and advantage
Principle
In tundish covering flux of the present invention, add Al in right amount2O3Main Function be: increase Al in slag2O3Activity,
Thus suppress to react 4 [Al]+3 (SiO2)=[Si]+(Al2O3) carry out to the right, reduce slag-metal reaction so that slag interface is the most alive
Jump；Al2O3Add and also result in interfacial tension rising, prevent slag.
In tundish covering flux of the present invention, the Main Function of the appropriate MnO of interpolation is: increase the activity of MnO in slag,
Thus suppress to react 2 [Mn]+(SiO2)=[Si]+2 (MnO) carry out to the right, reduce the interfacial tension that slag-metal reaction causes and reduce,
Prevent slag.
In tundish covering flux of the present invention, the Main Function of appropriate interpolation BaO is: allocate appropriate BaO into, itself and SiO2
Synergism, to Al2O3Carry out absorbing dissolving Deng field trash, form low melting point, make fusing point reduce, prevent sculls.
In tundish covering flux of the present invention, add Ce in right amount2O3Main purpose be: reduce its fusion temperature, thus
Improve the meltdown property of coverture, give full play to the molten steel in coverture absorbs steel inclusion and suppresses tundish and return the work of sulfur
With so that coverture has good purification of molten steel ability.
In tundish covering flux of the present invention, the Main Function of appropriate interpolation MgO is: MgO and tundish refractory material
In A12O3Dystectic MgO A1 can be formed2O3Spinelle, thus alleviate the erosion to tundish refractory material.
In tundish covering flux of the present invention, the purpose adding C 0.9 ~ 2.2% is: allocate a certain amount of C, Ke Yiyou into
Effect prevents tundish molten steel secondary oxidation；C content is maintained at less than 2.2% simultaneously, is to prevent molten steel carburetting.
The present invention is by controlling CaO and SiO2Mass ratio for the main purpose 3.17 ~ 7.17 is: improves tundish and covers
The basicity of agent, reduces the molten steel erosion to tundish refractory material.
Compared with prior art, have the advantage that of the present invention:
1) suppression slag-metal reaction ability is strong.By adding appropriate Al2O3And MnO, suppress slag-metal reaction so that slag interface
The most active, thus weaken slag trend；Also can stablize the composition of tundish covering flux so that it is physicochemical property controls closing simultaneously
In the range of reason.
2) efficient absorption field trash.By to BaO, Ce2O3、Na2O and Li2The rational proportion of the compositions such as O, makes middle cladding
The viscosity of lid agent and interfacial tension reduce, and improve the tundish covering flux wettability to field trash, promote that the melting of field trash is inhaled
Receive, the cleanliness factor of molten steel in tundish can be improved.
In sum, the present invention provides a kind of novel containing Mn, Al steel Tundish Covering Flux for Continuous Casting, it is possible to efficient absorption contains
Field trash in Mn, Al steel, improves the cleanliness factor of molten steel in tundish, prevents molten steel secondary oxidation well, prevents carburetting, change
Kind slab quality, has the features such as good heat-insulating property simultaneously.Tundish covering flux of the present invention can guarantee that containing Mn, Al steel continuous casting
Produce direct motion.
Detailed description of the invention
Below in conjunction with example, the invention will be further elaborated, and example is merely to illustrate the present invention rather than with any
Form limits the present invention.
The tundish covering flux fusion temperature (fusing point) of the present invention, the viscosity of 1300 DEG C are respectively adopted metallurgy industry standard
YB/T186 and YB/T185 measures.
Embodiment 1
A kind of steel Tundish Covering Flux for Continuous Casting Han Mn, Al, its main component weight/mass percentage composition is: CaO 39%, Al2O3 16%、
SiO2 9%、MgO 3%、Na2O 8%、Li2O 5%、F- 9%、BaO 4%、MnO 2.5%、Ce2O32.9%、C 1.6%.This tundish
The basicity CaO/ SiO of coverture2It is 4.33.
The main physical index of the tundish covering flux that employing said method records is shown in Table 1.Designed by this embodiment
Tundish covering flux for Mn weight/mass percentage composition be 23%, Al weight/mass percentage composition be 2.5%, C weight/mass percentage composition be
0.15% containing Mn, Al steel continuous casting；After testing, in tundish, total oxygen is less than 13ppm, and molten steel presss from both sides before and after tundish
Foreign material total amount reduces 45%, molten steel temperature drop 9 DEG C.(employing of tundish total oxygen demand is novel quickly determines oxygen sensor detection, and field trash subtracts
A small amount of employing micro-assessment method detection, molten steel temperature drop uses infrared radiation thermometer detection.)
Embodiment 2
A kind of steel Tundish Covering Flux for Continuous Casting Han Mn, Al, its main component weight/mass percentage composition is: CaO 40%, Al2O3 15%、
SiO2 10%、MgO 3%、Na2O 7%、Li2O 5%、F- 9%、BaO 4%、MnO 2.5%、Ce2O32.8%、C 1.7%.In the middle of this
The basicity CaO/ SiO of covering agent2It is 4.The main physical index of the tundish covering flux that employing said method records is shown in Table 1
Shown in.Tundish covering flux designed by this embodiment for Mn weight/mass percentage composition be 23%, Al weight/mass percentage composition be
2.5%, C weight/mass percentage composition be 0.15% containing Mn, Al steel continuous casting；After testing, in tundish, total oxygen is less than 15ppm,
Molten steel field trash total amount before and after tundish reduces 48%, molten steel temperature drop 10 DEG C.
Embodiment 3
A kind of steel Tundish Covering Flux for Continuous Casting Han Mn, Al, its main component weight/mass percentage composition is: CaO 40%, Al2O3 15%、
SiO2 9%、MgO 4%、Na2O 8%、Li2O 4%、F- 9%、BaO 4%、MnO 2.2%、Ce2O32.8%、C 2%.This centre is coated with
The basicity CaO/ SiO of lid agent2It is 4.44.The main physical index of the tundish covering flux that employing said method records is shown in Table 1 institute
Show.Tundish covering flux designed by this embodiment for Mn weight/mass percentage composition be 23%, Al weight/mass percentage composition be 2.5%, C
Weight/mass percentage composition be 0.15% containing Mn, Al steel continuous casting；After testing, in tundish, total oxygen is less than 14ppm, molten steel warp
Before and after crossing tundish, field trash total amount reduces 43%, molten steel temperature drop 12 DEG C.
Embodiment 4
A kind of steel Tundish Covering Flux for Continuous Casting Han Mn, Al, its main component weight/mass percentage composition is: CaO 41%, Al2O3 15%、
SiO2 8%、MgO 4%、Na2O 8%、Li2O 5%、F- 8%、BaO 4%、MnO 2.2%、Ce2O33%、C 1.8%.This centre is coated with
The basicity CaO/ SiO of lid agent2It is 5.13.The main physical index of the tundish covering flux that employing said method records is shown in Table 1 institute
Show.Tundish covering flux designed by this embodiment for Mn weight/mass percentage composition be 23%, Al weight/mass percentage composition be 2.5%, C
Weight/mass percentage composition be 0.15% containing Mn, Al steel continuous casting；After testing, in tundish, total oxygen is less than 11ppm, molten steel warp
Before and after crossing tundish, field trash total amount reduces 51%, molten steel temperature drop 11 DEG C.
Comparative example 1
A kind of tundish covering flux, its main component weight/mass percentage composition is: CaO 41%, Al2O3 17%、SiO2 8%、MgO
4.2%、Na2O 8%、Li2O 5%、F- 8%、BaO 4%、Ce2O33%、C 1.8%.The basicity CaO/ SiO of this tundish covering flux2
It is 5.13.Tundish covering flux designed by this embodiment for Mn weight/mass percentage composition be 23%, Al weight/mass percentage composition be
2.5%, C weight/mass percentage composition be 0.15% containing Mn, Al steel continuous casting；After testing, in tundish, total oxygen is less than 14ppm,
Molten steel field trash total amount before and after tundish reduces 25%, molten steel temperature drop 9 DEG C.
Find out from comparative example 1, be not added with the tundish covering flux of MnO, owing to there is slag-metal reaction, cause absorbing field trash
Effect is bad.
Comparative example 2
A kind of tundish covering flux, its main component weight/mass percentage composition is: CaO 40%, Al2O3 9%、SiO2 12%、MgO
5%、Na2O 10%、Li2O 4%、F- 9%、BaO 4%、MnO 2.2%、Ce2O32.8%、C 2%.The basicity of this tundish covering flux
CaO/ SiO2It is 3.33.Tundish covering flux designed by this embodiment for Mn weight/mass percentage composition be 23%, Al mass hundred
Point content is 2.5%, C weight/mass percentage composition be 0.15% containing Mn, Al steel continuous casting；After testing, in tundish, total oxygen is little
In 15ppm, molten steel field trash total amount before and after tundish reduces 21%, molten steel temperature drop 11 DEG C.
Find out from comparative example 2, add Al2O3Very few tundish covering flux, owing to there is slag-metal reaction, causes absorbing folder
Foreign material effect is bad.
Comparative example 3
A kind of tundish covering flux, its main component weight/mass percentage composition is: CaO 38%, Al2O3 15%、SiO2 8%、MgO
3%、Na2O 8%、Li2O 4%、F- 8%、BaO 4%、MnO 2.5%、Ce2O32.9%、C 6.6%.The basicity of this tundish covering flux
CaO/ SiO2It is 4.75.Tundish covering flux designed by this embodiment for Mn weight/mass percentage composition be 23%, Al mass hundred
Point content is 2.5%, C weight/mass percentage composition be 0.15% containing Mn, Al steel continuous casting；After testing, in tundish, total oxygen is little
In 12ppm, molten steel field trash total amount before and after tundish reduces 42%, molten steel temperature drop 12 DEG C, but discovery existence in casting process
Carburetting phenomenon.
Find out from comparative example 3, add the too high tundish covering flux of C, though other performances are constant, but cause molten steel carburetting tight
Weight.
Comparative example 4
A kind of tundish covering flux, its main component weight/mass percentage composition is: CaO 41%, Al2O3 9%、SiO2 12%、MgO
5%、Na2O 10%、Li2O 5%、F- 9%、BaO 4%、MnO 2.2%、Ce2O32.8%.Basicity CaO/ of this tundish covering flux
SiO2It is 3.42.Tundish covering flux designed by this embodiment for Mn weight/mass percentage composition be 23%, Al weight/mass percentage composition
Be 2.5%, C weight/mass percentage composition be 0.15% containing Mn, Al steel continuous casting；After testing, in tundish, total oxygen is less than
29ppm, molten steel field trash total amount before and after tundish reduces 45%, molten steel temperature drop 11 DEG C.
Find out from comparative example 4, be not added with the tundish covering flux of C, prevent molten steel secondary oxidation ability from substantially dying down.
By comparative example 1,2,3,4 and 4 embodiments of the present invention, it can be seen that cladding in the middle of designed by the present invention
Lid agent may be advantageously employed in containing Mn, Al steel casting process.After using tundish covering flux of the present invention, absorb and melt field trash
Ability is greatly enhanced, and total oxygen content significantly reduces, and temperature drop reduces.
Claims (9)
1. a steel Tundish Covering Flux for Continuous Casting Han Mn, Al, it is characterised in that by percentage to the quality, including following component:
CaO 34～43%, Al2O3 12~24%、SiO2 6~14%、MgO 2~5%、Na2O 6~12%、Li2O 3~7%、F- 5~12%、
BaO 2~8%、MnO 1~3%、Ce2O32～4%, C 0.9 ~ 2.2%.
It is the most according to claim 1 containing Mn, Al steel Tundish Covering Flux for Continuous Casting, it is characterised in that by percentage to the quality,
Including following component:
CaO 36～42%, Al2O3 13~21%、SiO2 7~13%、MgO 3~4.5%、Na2O 7~11%、Li2O 4~6.5%、F- 7~
11%、BaO 3~7%、MnO 1.5~2.8%、Ce2O32.2～3.8%, C 1.1 ~ 2.1%.
The most according to claim 2 containing Mn, Al steel Tundish Covering Flux for Continuous Casting, it is characterised in that by percentage to the quality
Including following component:
CaO 38～41%, Al2O3 15~20%、SiO2 8~12%、MgO 3.5~4%、Na2O 7.5~10%、Li2O 4.5~6%、F-
8~10%、BaO 4~6%、MnO 1.8~2.5%、Ce2O32.5～3.5%, C 1.2 ~ 1.8%.
The most according to claim 1 and 2 containing Mn, Al steel Tundish Covering Flux for Continuous Casting, it is characterised in that CaO and SiO2Quality
Ratio is 3.17 ~ 7.17:1.
The most according to claim 1 and 2 containing Mn, Al steel Tundish Covering Flux for Continuous Casting, it is characterised in that Na2O and Li2O's
Mass ratio is 0.86 ~ 4:1.
The most according to claim 1 and 2 containing Mn, Al steel Tundish Covering Flux for Continuous Casting, it is characterised in that its melting range is
1195 ~ 1305 DEG C, the viscosity of 1300 DEG C is 0.7 ~ 1.3 Pa s.
7. as described in claim 1～6 any one, contain the application of Mn, Al steel Tundish Covering Flux for Continuous Casting, it is characterised in that bag
Include and be used as containing Mn, Al steel Tundish Covering Flux for Continuous Casting.
Application containing Mn, Al steel Tundish Covering Flux for Continuous Casting the most according to claim 7, it is characterised in that described containing Mn,
In Al steel, C weight/mass percentage composition is 0.14 ~ 0.20%.
9. according to the application containing Mn, Al steel Tundish Covering Flux for Continuous Casting described in claim 7 or 8, it is characterised in that: described contain
In Mn, Al steel, Al weight/mass percentage composition is 1.5 ~ 2.5%, and Mn weight/mass percentage composition is 21.5 ~ 25.0%.
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| CN201610647939.6A CN106041006A (en) | 2016-08-10 | 2016-08-10 | Continuous casting tundish covering agent of Mn-containing and Al-containing steel and application thereof |
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|---|---|---|---|
| CN201610647939.6A CN106041006A (en) | 2016-08-10 | 2016-08-10 | Continuous casting tundish covering agent of Mn-containing and Al-containing steel and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273971A (en) * | 2018-03-05 | 2018-07-13 | 首钢京唐钢铁联合有限责任公司 | A method of reducing casting process molten steel nitrogen increased amount |
| CN113828742A (en) * | 2020-06-23 | 2021-12-24 | 宝山钢铁股份有限公司 | Covering agent for preventing slag entrapment in pouring area of tundish and application |
| CN114700470A (en) * | 2022-03-11 | 2022-07-05 | 钢铁研究总院有限公司 | Tundish covering agent for smelting rare earth steel and method for reducing rare earth loss |
| CN115156492A (en) * | 2022-06-15 | 2022-10-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Tundish covering agent in high-cleanliness steel IF steel continuous casting process and adding method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2848231B2 (en) * | 1994-02-01 | 1999-01-20 | 住友金属工業株式会社 | Mold powder for continuous casting |
| JP2007290002A (en) * | 2006-04-25 | 2007-11-08 | Nippon Steel Corp | Heat insulating material for molten steel surface and method for continuously casting steel using the same |
| CN103128240A (en) * | 2011-11-28 | 2013-06-05 | 上海梅山钢铁股份有限公司 | Low carbon steel continuous casting crystallizer casting powder |
| CN104226947A (en) * | 2013-06-17 | 2014-12-24 | 上海梅山钢铁股份有限公司 | Tundish covering agent for ultra-low-carbon steel |
| CN104439133A (en) * | 2014-12-16 | 2015-03-25 | 中南大学 | Novel casting powder and application thereof |
| CN104550797A (en) * | 2015-01-13 | 2015-04-29 | 东北大学 | Hyporeactive crystallizer casting powder for rear earth steel continuous casting |
| CN104858381A (en) * | 2015-05-25 | 2015-08-26 | 中南大学 | Novel aluminum steel continuous casting tundish covering agent and application thereof |
-
2016
- 2016-08-10 CN CN201610647939.6A patent/CN106041006A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2848231B2 (en) * | 1994-02-01 | 1999-01-20 | 住友金属工業株式会社 | Mold powder for continuous casting |
| JP2007290002A (en) * | 2006-04-25 | 2007-11-08 | Nippon Steel Corp | Heat insulating material for molten steel surface and method for continuously casting steel using the same |
| CN103128240A (en) * | 2011-11-28 | 2013-06-05 | 上海梅山钢铁股份有限公司 | Low carbon steel continuous casting crystallizer casting powder |
| CN104226947A (en) * | 2013-06-17 | 2014-12-24 | 上海梅山钢铁股份有限公司 | Tundish covering agent for ultra-low-carbon steel |
| CN104439133A (en) * | 2014-12-16 | 2015-03-25 | 中南大学 | Novel casting powder and application thereof |
| CN104550797A (en) * | 2015-01-13 | 2015-04-29 | 东北大学 | Hyporeactive crystallizer casting powder for rear earth steel continuous casting |
| CN104858381A (en) * | 2015-05-25 | 2015-08-26 | 中南大学 | Novel aluminum steel continuous casting tundish covering agent and application thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273971A (en) * | 2018-03-05 | 2018-07-13 | 首钢京唐钢铁联合有限责任公司 | A method of reducing casting process molten steel nitrogen increased amount |
| CN113828742A (en) * | 2020-06-23 | 2021-12-24 | 宝山钢铁股份有限公司 | Covering agent for preventing slag entrapment in pouring area of tundish and application |
| CN114700470A (en) * | 2022-03-11 | 2022-07-05 | 钢铁研究总院有限公司 | Tundish covering agent for smelting rare earth steel and method for reducing rare earth loss |
| CN114700470B (en) * | 2022-03-11 | 2023-11-28 | 钢铁研究总院有限公司 | Tundish covering agent for smelting rare earth steel and method for reducing rare earth loss |
| CN115156492A (en) * | 2022-06-15 | 2022-10-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Tundish covering agent in high-cleanliness steel IF steel continuous casting process and adding method thereof |
| CN115156492B (en) * | 2022-06-15 | 2024-02-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Tundish covering agent for high-clean steel IF steel continuous casting process and adding method thereof |
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Application publication date: 20161026 |