CN101307375A - Antisticking ladle dreg modifying agent for refining out of furnace - Google Patents
Antisticking ladle dreg modifying agent for refining out of furnace Download PDFInfo
- Publication number
- CN101307375A CN101307375A CNA2008100699716A CN200810069971A CN101307375A CN 101307375 A CN101307375 A CN 101307375A CN A2008100699716 A CNA2008100699716 A CN A2008100699716A CN 200810069971 A CN200810069971 A CN 200810069971A CN 101307375 A CN101307375 A CN 101307375A
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- China
- Prior art keywords
- modifying agent
- slag
- percent
- antisticking
- ladle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention provides an anti-sticking ladle slag modifying agent for external refining, which consists of active lime, corundum slag and fluorite. The chemical compositions by weight percentage of the modifying agent are: 75 to 85 percent of CaO, 0 to 5.0 percent of SiO2, 2.0 to 8.0 percent of Al2O3, 4.0 to 8.0 percent of F<->, 0 to 5 percent of MgO, and the balance being impurities; in the impurities: FeO and MnO are less than 5.0 percent, H2O is less than 0.5 percent, and S and/or P is less than 0.08 percent. Compared with the prior art, the modifying agent has remarkable effect on relieving the slag sticking of ladles and RH submerged tubes, can effectively prevent the slag sticking of the ladles and the RH submerged tubes, improve the service life of the RH submerged tubes, and remarkably increase the effect of slag sticking prevention; the modifying agent does not increase the time of refining processing, contributes to the continuity of the production, and remarkably improves production efficiency. The charging quantity which does not stick slag can at least reach 12.
Description
Technical field
The invention belongs to field of steel-making, be specifically related to a kind of external refining process that is used for preventing, the refining ladle dreg modifying agent of ladle and RH soaking tub dry slag.
Background technology
In the molten steel furnace external refining process, because the adhesion or the cooled bonding of solidifying of high-temperature fusant, the problem of steel bonding or dry slag appears in regular meeting when ladle or RH soaking tub, has influenced the raising of normally carrying out of producing and production efficiency.For example, the dry slag of the RH soaking tub in the RH refining process, can cause the chap of RH soaking tub to grow up, the ladle headroom reduces, just can continue after must clearing up to use, and the scarfing cinder processing not only takes time and effort, can cause also that sometimes soaking tub damages, cause vacuum chamber to roll off the production line in advance, directly influenced the raising of production efficiency.And for example, can produce the ladle dry slag in the casting process, and CAS refining impregnating cover dry slag etc., production efficiency directly influenced.
Dry slag problem at field of steel-making, adopt method to solve at present mostly at equipment work wall spraying high temperature release coating, but because the coating that is sprayed on ladle or the RH soaking tub wall in use can constantly be consumed, when coating runs out of, just need carry out spraying again, otherwise the problem that will occur dry slag once more, this has influenced the continuity of producing greatly, has limited the raising of production efficiency.
Disclosed as CN1429677A by Wingdale, slaked lime, SiO
2Micro mist, tripoly phosphate sodium STPP, water glass, paper fibrous " preventing the calcium oxide coating of steelmaking container dry slag ", CN1068282 is disclosed a kind of by Al
2O
3, Cr
2O
3, SiC, graphite and wedding agent aluminum phosphate solution, " high-temperature coatings of anti-steel bonding dry slag " of wooden sodium sulfonate's solution composition and the fluorite of the disclosed employing massfraction of Japanese Patent 04-116117 10-80% and the Wingdale of 90-20% be the release coating of main raw material.The release coating of above-mentioned patent disclosure all exists coating with increasing and the problem of attenuate duration of service, after handling certain stove number, coating will be consumed and lose original effect, must spray once more, otherwise anti-adhesion effects is difficult to guarantee, promptly adopts the mode of coating relatively poor for quantity-produced adaptability.From producing actual effect, the best use of the disclosed coating of described CN1429677A stove number is 7 stoves, and the disclosed coating of CN1068282 uses the stove number to be the 7-10 stove.This does not reach far away produces successional requirement, has limited the raising of production efficiency greatly.
Summary of the invention
The purpose of this invention is to provide a kind of antisticking ladle dreg modifying agent for refining out of furnace, prevent ladle and RH soaking tub dry slag, this properties-correcting agent has significant effect to the dry slag that alleviates ladle and RH soaking tub, can improve the work-ing life of RH soaking tub, the continuity that helps producing and the raising of production efficiency.
Purpose of the present invention realizes in the following manner: a kind of antisticking ladle dreg modifying agent for refining out of furnace, it is characterized in that: this properties-correcting agent is made up of quickened lime, corundum slag and fluorite, and the weight percent of this properties-correcting agent chemical ingredients satisfies: 75%＜CaO＜85%, 0%＜SiO
2＜5.0%, 2.0%＜Al
2O
3＜8.0%, 4.0%＜F
-＜8.0%, 0%＜MgO＜5%, all the other are impurity, FeO+MnO in the impurity＜5.0%, H
2O＜0.5%, S and/or P＜0.08%.
Wherein, the weight percent of the chemical constitution of raw material satisfies respectively:
Quickened lime: CaO＞90%, MgO＜8%;
Corundum slag: 5%＜CaO＜15%, 60%＜Al
2O
3＜80%;
Fluorite: CaF
2＞85%, SiO
2＜15%.
In addition, require moisture content in all raw materials＜0.5%, S and/or P＜0.08%;
The particle diameter of raw material more than 90% after the requirement fragmentation is less than 8mm.
The effect of each chemical ingredients is respectively in the properties-correcting agent of the present invention:
CaO: form low melting point with former slag, suppress separating out of high-melting-point phase, help reducing the fusing point of slag;
CaF
2: fusing assistant, quicken the dissolving of CaO, improve the flowability of slag in the short period of time;
Al
2O
3: flowability and the crystal property of regulating slag;
SiO
2: reduce the basicity of slag, regulate the high-temperature physics character of slag;
MgO: belong to the component that raw material is brought into, content is high can to reduce slag fluidity, should note the control of raw material composition;
FeO+MnO: belong to the impurity that raw material is brought into, too high levels can increase the oxidisability of slag, is unfavorable for that purified carries out, and is easy to form the high-melting-point phase;
H
2O, S and P: the impurity that raw material is brought into, pollute molten steel for preventing it, must control its amount that enters.Wherein, H
2O can make molten steel increase [H], causes hydrogen embrittlement, white point etc., influences the quality of product; S and/or P may make molten steel return P, return S, and product fragility is increased, and influence its use properties.
The properties-correcting agent particle diameter requires less than 8mm, is the convenience in order to produce.
Compared to existing technology, Antisticking ladle dreg modifying agent of the present invention has following characteristics:
1, CaO＞75% in the properties-correcting agent of the present invention, belong to high CaO type slag, help forming low melting point mutually, the dry slag that alleviates ladle and RH soaking tub is had significant effect with the composition of refining steel cinder inclusion, can improve the work-ing life of RH soaking tub, the effect of anti-dry slag significantly increases;
2, add between the properties-correcting agent refining standby period of the present invention, reinforced station and time are not set in addition, do not increase the time of refining treatment, the continuity that helps producing has also significantly improved production efficiency;
3, keeping not, the stove number of dry slag can reach 12 stoves at least;
4, control H in the control properties-correcting agent
2The content of O, S and P can guarantee can not make because adding properties-correcting agent [H] in the molten steel, [S] and [P] content to increase, and influences the quality of molten steel; Control properties-correcting agent particle diameter helps properties-correcting agent and incorporates fast in the slag less than 8mm, forms uniform and stable low-melting ladle refining slag.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
At first, detect the composition of starting material quickened lime, corundum slag and fluorite, select to satisfy the starting material of following weight ratio condition, i.e. quickened lime: CaO＞90%; Corundum slag: CaO 5-15%, Al
2O
360-80%; Fluorite: CaF
2＞85%, SiO
2＜15%; Moisture＜0.5% in three kinds of raw materials; S is or/and P＜0.08%; Otherwise, should not use.
Then, to above-mentioned raw materials dry, broken and screening, require raw material particle size after the 90% above fragmentation less than 8mm;
In the 3rd step,, can calculate required raw-material weight referring to table 1 according to the condition of Antisticking ladle dreg modifying agent chemical ingredients.
Antisticking ladle dreg modifying agent chemical ingredients of the present invention (weight percent) satisfies:
75%＜CaO＜85%, 0%＜SiO
2＜5.0%, 2.0%＜Al
2O
3＜8.0%, 4.0%＜F
-＜8.0%, 0%＜MgO＜5%, surplus are impurity; FeO+MnO in the impurity＜5.0%, H
2O＜0.5%, S and/or P＜0.08%.
Table 1 is the embodiment (weight percent) that the present invention fills a prescription:
Table 2 is the composition of raw materials (weight percent) that satisfy table 1:
| Raw material and prescription | Prescription 1 | Prescription 2 | Prescription 3 |
| Quickened lime | 70％ | 80％ | 85％ |
| The corundum slag | 15％ | 5％ | 5％ |
| Fluorite | 15％ | 15％ | 10％ |
| Result of use | ＞12 stoves are not sticking | ＞12 stoves are not sticking | ＞12 stoves are not sticking |
The preparation method of antisticking ladle dreg modifying agent for refining out of furnace of the present invention comprises the steps:
1, detects the chemical ingredients of starting material quickened lime, corundum slag, fluorite;
2, above-mentioned raw materials is dried respectively, broken and screening, require the particle diameter of raw material more than 90% after the fragmentation less than 8mm;
3, according to the condition of the chemical component weight per-cent of Antisticking ladle dreg modifying agent, i.e. 75%＜CaO＜85%, 0%＜SiO
2＜5.0%, 2.0%＜Al
2O
3＜8.0%, 4.0%＜F
-＜8.0%, 0%＜MgO＜5%; Surplus is an impurity, wherein FeO+MnO in the impurity＜5.0%, H
2O＜0.5%, S and/or P＜0.08%.Calculate the weight of required various raw materials, and weighing is stand-by respectively;
4, with the starting material of above-mentioned weighing in proportion, mechanical stirring in the stir mixing machine, mixing;
5, carry out sealed barrier package.
Antisticking ladle dreg modifying agent for refining out of furnace of the present invention adds ladle before external refining, add-on is the 300-600Kg/ stove, can effectively prevent the dry slag of ladle and RH soaking tub, use this Antisticking ladle dreg modifying agent when RH handles the IF steel, test in 135 tons of ladles, the RH soaking tub can be kept not dry slag of 12 stoves at least.
Claims (5)
1, a kind of antisticking ladle dreg modifying agent for refining out of furnace is characterized in that, this properties-correcting agent is made up of quickened lime, corundum slag and fluorite, and the weight percent of this properties-correcting agent chemical ingredients satisfies: 75%＜CaO＜85%, 0%＜SiO
2＜5.0%, 2.0%＜Al
2O
3＜8.0%, 4.0%＜F-＜8.0%, 0%＜MgO＜5%, surplus is an impurity.
2, a kind of antisticking ladle dreg modifying agent for refining out of furnace according to claim 1 is characterized in that, wherein the chemical constitution of raw material satisfies:
Quickened lime: CaO＞90%, MgO＜8%;
Corundum slag: 5%＜CaO＜15%, 60%＜Al
2O
3＜80%;
Fluorite: CaF
2＞85%, SiO
2＜15%.
3, a kind of antisticking ladle dreg modifying agent for refining out of furnace according to claim 1 and 2 is characterized in that, H in the impurity of described quickened lime, corundum slag and fluorite
2O＜0.5%, S and/or P＜0.08%.
4, a kind of antisticking ladle dreg modifying agent for refining out of furnace according to claim 1 and 2 is characterized in that, the particle diameter after described quickened lime, corundum slag and the fluorite fragmentation is less than 8mm.
5, a kind of antisticking ladle dreg modifying agent for refining out of furnace according to claim 1 is characterized in that, described Antisticking ladle dreg modifying agent adds ladle before external refining, and add-on is the 300-600Kg/ stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100699716A CN101307375A (en) | 2008-07-11 | 2008-07-11 | Antisticking ladle dreg modifying agent for refining out of furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100699716A CN101307375A (en) | 2008-07-11 | 2008-07-11 | Antisticking ladle dreg modifying agent for refining out of furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101307375A true CN101307375A (en) | 2008-11-19 |
Family
ID=40124051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100699716A Pending CN101307375A (en) | 2008-07-11 | 2008-07-11 | Antisticking ladle dreg modifying agent for refining out of furnace |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010938A (en) * | 2010-12-29 | 2011-04-13 | 重庆大学 | Ladle furnace-vacuum degassing (LF-VD) furnace reduction refining slag with low SiO2 and Al2O3 contents |
| CN101629225B (en) * | 2009-08-11 | 2011-06-29 | 韶关市华喆冶金材料有限公司 | Slag synergist |
| TWI417391B (en) * | 2010-09-30 | 2013-12-01 | New Chien Te Hang Co Ltd | Slag conditioner composition and method of using the same |
| CN103642988A (en) * | 2013-11-12 | 2014-03-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for molten steel refining by corundum slag |
| CN105219921A (en) * | 2014-06-03 | 2016-01-06 | 本钢板材股份有限公司 | A kind of novel Steel ladle modifier |
| CN105586464A (en) * | 2014-10-23 | 2016-05-18 | 红安县生伦冶金矿产科技实业有限公司 | Preparation method for composite slag melting agent |
| CN107176850A (en) * | 2017-06-23 | 2017-09-19 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of anti-sticking powdery paints and preparation method thereof |
| US9836039B2 (en) | 2011-06-09 | 2017-12-05 | Dmg Electronics Gmbh | Method and system for simulating a work process on a machine tool |
| CN107686362A (en) * | 2017-09-18 | 2018-02-13 | 北京利尔高温材料股份有限公司 | A kind of stirring-head slag adhesion interleaving agent and preparation method thereof |
| CN107815519A (en) * | 2017-12-07 | 2018-03-20 | 北京首钢股份有限公司 | A kind of ladle slag modifier and modifying process method |
| CN108411068A (en) * | 2018-03-26 | 2018-08-17 | 首臣（上海）新能源科技有限公司 | A kind of slag former and preparation method for vacuum-oxygen decarbonizing purifying method |
| CN110408741A (en) * | 2019-07-30 | 2019-11-05 | 上海电气上重铸锻有限公司 | Steel refining slag system formula |
| CN110804688A (en) * | 2019-10-22 | 2020-02-18 | 首钢集团有限公司 | Method for breaking slag shells in RH refining vacuum process |
| CN111910048A (en) * | 2020-08-20 | 2020-11-10 | 攀钢集团攀枝花钢钒有限公司 | Method for reducing slag adhesion of RH insertion tube |
| CN114349009A (en) * | 2022-01-21 | 2022-04-15 | 贵州理工学院 | Slag agent for refining and deferrization of iron and titanium outside industrial silicon furnace |
| CN114457211A (en) * | 2021-12-28 | 2022-05-10 | 江苏沙钢集团有限公司 | Slagging smelting method for prolonging service life of steel ladle |
| CN114959183A (en) * | 2022-04-28 | 2022-08-30 | 洛阳中重铸锻有限责任公司 | Refined slag system based on aluminum deoxidized Cr5 supporting roll steel and application process thereof |
-
2008
- 2008-07-11 CN CNA2008100699716A patent/CN101307375A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629225B (en) * | 2009-08-11 | 2011-06-29 | 韶关市华喆冶金材料有限公司 | Slag synergist |
| TWI417391B (en) * | 2010-09-30 | 2013-12-01 | New Chien Te Hang Co Ltd | Slag conditioner composition and method of using the same |
| CN102010938B (en) * | 2010-12-29 | 2012-09-05 | 重庆大学 | Ladle furnace-vacuum degassing (LF-VD) furnace reduction refining slag with low SiO2 and Al2O3 contents |
| CN102010938A (en) * | 2010-12-29 | 2011-04-13 | 重庆大学 | Ladle furnace-vacuum degassing (LF-VD) furnace reduction refining slag with low SiO2 and Al2O3 contents |
| US9836039B2 (en) | 2011-06-09 | 2017-12-05 | Dmg Electronics Gmbh | Method and system for simulating a work process on a machine tool |
| CN103642988A (en) * | 2013-11-12 | 2014-03-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for molten steel refining by corundum slag |
| CN103642988B (en) * | 2013-11-12 | 2015-07-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for molten steel refining by corundum slag |
| CN105219921A (en) * | 2014-06-03 | 2016-01-06 | 本钢板材股份有限公司 | A kind of novel Steel ladle modifier |
| CN105586464A (en) * | 2014-10-23 | 2016-05-18 | 红安县生伦冶金矿产科技实业有限公司 | Preparation method for composite slag melting agent |
| CN107176850B (en) * | 2017-06-23 | 2020-02-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Anti-sticking powder coating and preparation method thereof |
| CN107176850A (en) * | 2017-06-23 | 2017-09-19 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of anti-sticking powdery paints and preparation method thereof |
| CN107686362A (en) * | 2017-09-18 | 2018-02-13 | 北京利尔高温材料股份有限公司 | A kind of stirring-head slag adhesion interleaving agent and preparation method thereof |
| CN107686362B (en) * | 2017-09-18 | 2020-12-08 | 北京利尔高温材料股份有限公司 | Slag adhesion preventing isolating agent for stirring head and preparation method thereof |
| CN107815519A (en) * | 2017-12-07 | 2018-03-20 | 北京首钢股份有限公司 | A kind of ladle slag modifier and modifying process method |
| CN108411068A (en) * | 2018-03-26 | 2018-08-17 | 首臣（上海）新能源科技有限公司 | A kind of slag former and preparation method for vacuum-oxygen decarbonizing purifying method |
| CN110408741A (en) * | 2019-07-30 | 2019-11-05 | 上海电气上重铸锻有限公司 | Steel refining slag system formula |
| CN110804688A (en) * | 2019-10-22 | 2020-02-18 | 首钢集团有限公司 | Method for breaking slag shells in RH refining vacuum process |
| CN110804688B (en) * | 2019-10-22 | 2021-07-23 | 首钢集团有限公司 | Method for breaking slag shells in RH refining vacuum process |
| CN111910048A (en) * | 2020-08-20 | 2020-11-10 | 攀钢集团攀枝花钢钒有限公司 | Method for reducing slag adhesion of RH insertion tube |
| CN114457211A (en) * | 2021-12-28 | 2022-05-10 | 江苏沙钢集团有限公司 | Slagging smelting method for prolonging service life of steel ladle |
| CN114349009A (en) * | 2022-01-21 | 2022-04-15 | 贵州理工学院 | Slag agent for refining and deferrization of iron and titanium outside industrial silicon furnace |
| CN114959183A (en) * | 2022-04-28 | 2022-08-30 | 洛阳中重铸锻有限责任公司 | Refined slag system based on aluminum deoxidized Cr5 supporting roll steel and application process thereof |
| CN114959183B (en) * | 2022-04-28 | 2023-10-24 | 洛阳中重铸锻有限责任公司 | Refining slag system based on aluminum deoxidized Cr5 supporting roller steel and application process thereof |
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Open date: 20081119 |