CN108176831A - A kind of high-aluminum steel continuous crystallizer protecting slag - Google Patents
A kind of high-aluminum steel continuous crystallizer protecting slag Download PDFInfo
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- CN108176831A CN108176831A CN201711462653.1A CN201711462653A CN108176831A CN 108176831 A CN108176831 A CN 108176831A CN 201711462653 A CN201711462653 A CN 201711462653A CN 108176831 A CN108176831 A CN 108176831A
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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
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Abstract
The invention belongs to steelmaking technical fields, and in particular to a kind of high-aluminum steel continuous crystallizer protecting slag.High-aluminum steel of the present invention is with continuous crystallizer protecting slag chemical composition and mass percentage：Its chemical composition and mass percentage are：CaO：31%~39%, SiO2：20%~28%, MgO：3%~7%, Li2O：2%~4.5%, Al2O3：5%~10%, Na2O：5%~10%, F：2%~5%, MnO：3%~10%, C：4%~8%, remaining is impurity.The defects of covering slag of the present invention overcomes aluminum oxide in high-aluminum steel molten steel and enters slag, deteriorate slag, gained strand qualification rate is high.
Description
Technical field
The invention belongs to steelmaking technical fields, and in particular to a kind of high-aluminum steel continuous crystallizer protecting slag.
Technical background
In molten steel direct casting, need constantly to add in covering slag on the molten steel face in continuous cast mold, fusing
Covering slag is constantly flowed between strand and crystallizer with the vibration of crystallizer, plays the role of lubrication and Heat Transfer Control, slag
Isolation air avoids molten steel oxidation, and molten solid slag does not have insulation effect to molten steel, and slag also absorbs the aluminium oxide in molten steel
Wait field trashes.The main chemical composition of traditional covering slag is CaO, SiO2, A12O3Deng adding subcarbonate and fluoride
Fusing point, viscosity are adjusted, carbonaceous material is added in and adjusts burn-off rate.SiO in traditional covering slag2Content between 30%-40%, this
High dioxide-containing silica, when casting high-aluminum steel, the strong reducing property metallic element easily on desulphurization and in molten steel
Chemically reactive, such as：4[Al]+3(SiO2)=2(A12O3)+3 [Si], i.e. metallic aluminium in molten steel are by the dioxy in covering slag
SiClx restore, reaction the result is that A12O3Into slag, Si is entered in molten steel.If also containing element, the rare earth of admiring in molten steel
Similar chemical reaction then can also occur for metalloid element.Therefore, the A1 in slag2O3Increment be made of two parts：Absorb steel
The Al to float in water2O3Field trash and the A1 of slag steel reaction generation2O3.A1 in slag under normal conditions2O3Increment is in 3%-
6%, but the Al in the molten steel, when Ti, rare earth element content are higher, the oxides of these elements enter slag it is more when, can deteriorate
The performance of slag.Such as when Al content is more than 1% in high-aluminum steel molten steel, the A1 of slag2O3Increment be more than 15%, in slag
SiO2Decrement is more than 10%, easily produces calcium-aluminium-silicon oxide high-melting-point ore deposit phase in slag, promotes the fusing point and viscosity of slag, melts
Slag cannot be uniformly flowed between crystallizer and strand, and cc billet surface quality deteriorates, and prevents continuous casting from continuing or even occurring
Bleed-out accident.In conclusion common continuous casting covering slag is clearly not to be suitable for high-aluminum steel.
The Chinese invention patent that notification number is CN103128243B discloses a kind of dedicated continuous cast mold of high-aluminum steel and protects
Slag is protected, composition of raw materials ratio of weight and number is：Pre- 7~13 parts of melt, 9~11 parts of Fluorspar Powder, 4~6 parts of calcined soda for industry, carbon black 6
Part, 3~6 parts of amorphous graphite, 24~31 parts of calcisphere, 17~25 parts of refining slag, 3 parts of lithium carbonate, 9~15 parts of bauxite, carbon
Sour 4 parts of barium, 3 parts of manganese carbonate, 5 parts of borax.High alumina continuous casting covering slag disclosed in the patent can effectively solve high-aluminum steel
Field trash in casting process is more and in high-melting-point, and making common covering slag, quality easily deteriorates in use, causes technique
Not direct motion and the casting billet surface easily mass defects such as cracked, pit.But patent CaO+Al2O3%：40~50%, and
CaO%/Al2O3%=0.6~1.0, CaO dosage are relatively relatively low, Al2O3Content is relatively higher, improves protection slag melting point and glues
Degree, is susceptible to bleed-out accident.
Invention content
The invention aims to make up the deficiencies in the prior art, a kind of high-aluminum steel continuous crystallizer protecting slag is provided.
A kind of high-aluminum steel continuous crystallizer protecting slag, chemical composition and mass percentage are：CaO：31%~39%,
SiO2：20%~28%, MgO：3%~7%, Li2O：2%~4.5%, Al2O3：5%~10%, Na2O：5%~10%, F：2%~5%, MnO：
3%~10%, C：4%~8%, remaining is impurity.
Preferably, the high-aluminum steel continuous crystallizer protecting slag, chemical composition and mass percentage are：CaO：
33%、SiO2：25%、MgO：6%、Li2O：4.5%、Al2O3：7%、Na2O：5%、F：4.5%、MnO：8%、C：6.8%, remaining is impurity.
Preferably, the basicity CaO/SiO of the high-aluminum steel continuous crystallizer protecting slag2It is 1.23~1.58.
Preferably, 1120 DEG C~1150 DEG C of the fusing point of the high-aluminum steel continuous crystallizer protecting slag, viscosity at 1300 DEG C
0.55~0.8Pas.
Beneficial effects of the present invention：
1. CaO makes covering slag primary crystallization hyperenergia, the recrystallization temperature of covering slag is improved, but deteriorate profit to a certain extent
Sliding, CaO weight percentages of the present invention are 31%-39%；
SiO2The thickness for being conducive to melt cinder film near covering slag meniscus maintains certain level, improves lubrication.It is but excessively high
SiO2The easily crystal property of reduction covering slag, SiO of the present invention2Weight percentage be 20%-28%.
CaO content of the present invention is high, SiO2Content 20%~28%, content is low, reduces silica and steel on desulphurization
The reaction of underwater gold category aluminium, while protect basicity of slag basicity is higher 1.23~1.58, it can effectively inhibit to be precipitated in slag big
The crystal of amount, so as to ensure preferable heat-transfer capability and lubricant effect.
2. MgO belongs to alkaline metal oxide, part CaO can be substituted in covering slag, but due to the fusing point of MgO itself
Compare high, and easily combined with other compositions generation high melting compound, the turnover temperature of slag can be promoted when content is higher
Degree deteriorates strand lubrication.MgO weight percentages of the present invention are 3%-7%.
Al2O3The viscosity of covering slag, crystallization tendency are influenced it is bigger, with Al2O3The increase of content, covering slag glue
Degree increases, and crystallization tendency increases, but too high levels, easily improves the fusing point and viscosity of slag, is unfavorable for lubricating, and the present invention will
Al2O3Control is between 5%~10%.Al of the present invention2O3Content is relatively low, reduces the generation of high-melting-point substances in covering slag, keeps
The fusing point and viscosity of covering slag.
MnO can be substantially reduced covering slag viscosity and fusion temperature, be effectively improved bonding steel leakage phenomenon, reduce transparent glass
Body weakens lattice vibration and conduction heat transfer, improves the crystal property and slab quality of covering slag, MnO contents of the present invention for 3%~
10%。
Na of the present invention2O, F and Li2O content is respectively in 5%~10%Na2O, 2%~5%F and 2%~4.5%Li2O, as protection
Slag cosolvent, can reduce crystalline solid Precipitation Temperature, and the crystalline solid quantity that control covering slag slag film is precipitated in condensation process is real
Weak cold and the heat transfer for having showed crystallizer middle and upper part are uniform, reduce the generation of crackle.Meanwhile Na2O, F and Li2O can be carried effectively
The absorption of high covering slag is mingled with effect, prevents component segregation, so as to avoid the generation of row line.And F contents are few, reduce pair
The corrosion of equipment and the pollution of air.
C content of the present invention control is produced when effectively reducing solidification of molten steel due to the casting blank solidification transformation in steel 4% ~ 8%
Raw significantly Phase change shrinkage, crystal grain thinning, green shell built-in thermal stress is small, and shell growth is uniform, is not likely to produce crackle.
2. the fusing point of covering slag is higher, it is less susceptible to crack, because being born green shell after fusing point raising in crystallizer
Solid slag film thickness between crystallizer copper wooden partition increases, and the thermal resistance increase of covering slag, covering slag heat transfer Shannon index increase, because
This fusing point is higher to be less susceptible to crack.But in view of high-aluminum steel linear shrinkage to it is larger, melting condition is severe, therefore fusing point only
Can be more slightly higher than GPF (General Protection False slag, by fusing point control between 1120 DEG C~1150 DEG C.
Higher viscosity is conducive to control the depth of chatter mark of casting billet surface, while is conducive to obtain the casting of great surface quality
Base, but excessively high viscosity prevents slag from uniformly flowing between crystallizer and strand, and slag consumption reduces, and causes slag film thinning,
Even part green shell cannot adequately lubricate, and easily cause the shallow disorder of oscillation mark and distortion induces the subcutaneous micro-crack of strand and even leads
Bonding steel leakage accident is caused, 0.55~0.8Pas of viscosity at 1300 DEG C of covering slag of the present invention；
3. show that, using covering slag of the present invention, melt cinder 8~12mm of layer thickness has reached ideal design through field service test
Standard.In casting cycle, covering slag spreadability is preferable, can uniformly spread in molten steel surface, and covering slag gas permeability is preferable, fire
Seedling is smaller and flame distribution is uniform, and slugging is uniform and stable, and there is no phenomena such as conglomeration.Covering slag slag consumption is 0.3~0.4 kg/
Ton steel.After waiting slab coolings, observe strand under cold conditions, casting billet surface totality flat smooth is without exception, oscillation mark is clear, rule, compared with
It is shallow, without slag, slag phenomenon is stained with, overcome the defects of aluminum oxide in high-aluminum steel molten steel enters slag, deteriorates slag, strand level-one
Product qualification rate is up to more than 99%.
Specific embodiment
Embodiment 1
A kind of high-aluminum steel continuous crystallizer protecting slag, chemical composition and mass percentage are：CaO：31%、SiO2：20%、
MgO：7%、Li2O：3.6%、Al2O3：8.2%、Na2O：10%、F：3.3%、MnO：8.8%、C：8%, remaining is impurity.
Protection basicity of slag, that is, the CaO/SiO2It is 1.55, viscosity 0.7Pas at 1140 DEG C, 1300 DEG C of fusing point.
It opens when pouring starting, by the covering slag push-in crystallizer after adjustment, through observation, steel liquid fluctuating is drawn within 3mm
Speed is stablized in 0.5 m/min, measures melt cinder layer thickness 9.5mm or so at this time.Hereafter a liquid slag layer, thickness are surveyed every 20min
In 9~10 mm, ideal design standard is reached.Through observation, in casting cycle, covering slag spreadability is preferable, can be uniform
Spread in molten steel surface.Covering slag gas permeability is preferable, and flare is smaller and flame distribution is uniform, and slugging is uniform and stable, and there is no knots
Phenomena such as group.Through statistics, which is 0.33kg/ tons of steel.After waiting slab coolings, strand under cold conditions, strand are observed
Surface totality flat smooth is without exception, and oscillation mark is clear, regular, shallower, and without slag, slag phenomenon is stained with, strand primes qualification rate is
More than 99%.
Embodiment 2
A kind of high-aluminum steel continuous crystallizer protecting slag, chemical composition and mass percentage are：CaO：32%、SiO2：26%、
MgO：4.1%、Li2O：4.2%、Al2O3：7.5%、Na2O：8.3%th, F：4%、MnO：7.6%、C：6%, remaining is impurity.
Protection basicity of slag, that is, the CaO/SiO2It is 1.23, viscosity 0.6Pa.s at 1120 DEG C, 1300 DEG C of fusing point.
It opens when pouring starting, by the covering slag push-in crystallizer after adjustment, through observation, steel liquid fluctuating is drawn within 3mm
Speed is stablized in 0.35 m/min, measures 10 mm of melt cinder layer thickness or so at this time.Hereafter a liquid slag layer, thickness are surveyed every 20min
In 9.5~10.5mm, ideal design standard is reached.Through observation, in casting cycle, covering slag spreadability is preferable, can be
Even spreads in molten steel surface.Covering slag gas permeability is preferable, and flare is smaller and flame distribution is uniform, and slugging is uniform and stable, does not deposit
The conglomeration phenomena such as.Through statistics, which is 0.36kg/ tons of steel.After waiting slab coolings, strand under cold conditions is observed,
Casting billet surface totality flat smooth is without exception, and oscillation mark is clear, regular, shallower, and without slag, slag phenomenon is stained with, strand primes is qualified
Rate is more than 99%.
Embodiment 3
A kind of high-aluminum steel continuous crystallizer protecting slag, chemical composition and mass percentage are：CaO：33%、SiO2：25%、
MgO：6%、Li2O：4.5%、Al2O3：7%、Na2O：5%、F：4.5%、MnO：8%、C：6.8%, remaining is impurity.
Protection basicity of slag, that is, the CaO/SiO2It is 1.32, viscosity 0.62Pas at 1130 DEG C, 1300 DEG C of fusing point.
Open when pouring starting, by the covering slag push-in crystallizer after adjustment, through observation, steel liquid fluctuating within 3.5mm,
Pulling rate stabilization measures melt cinder layer thickness 8.5mm or so in 0.5 m/min at this time.Hereafter a liquid slag layer is surveyed every 20min, it is thick
It spends in 8~9mm, has reached ideal design standard.Through observation, in casting cycle, covering slag spreadability is preferable, can be uniformly
Spread in molten steel surface.Covering slag gas permeability is preferable, and flare is smaller and flame distribution is uniform, and slugging is uniform and stable, is not present
Phenomena such as conglomeration.Through statistics, which is 0.30kg/ tons.After waiting slab coolings, strand under cold conditions, strand are observed
Surface totality flat smooth is without exception, and oscillation mark is clear, regular, shallower, and without slag, slag phenomenon is stained with, strand primes qualification rate is
More than 99%.
Embodiment 4
A kind of high-aluminum steel continuous crystallizer protecting slag, chemical composition and mass percentage are：CaO：35%、SiO2：28%、
MgO：3%、Li2O：3%、Al2O3：10%、Na2O：8%, F：5%、MnO：3.8%、C：4%, remaining is impurity.
Protection basicity of slag, that is, the CaO/SiO2It is 1.25, viscosity 0.8Pas at 1150 DEG C, 1300 DEG C of fusing point.
It opens when pouring starting, by the covering slag push-in crystallizer after adjustment, through observation, steel liquid fluctuating is drawn within 3mm
Speed is stablized in 0.4 m/min, measures melt cinder layer thickness 11mm or so at this time.Hereafter a liquid slag layer is surveyed every 20min, thickness exists
10.5~11.5mm has reached ideal design standard.Through observation, in casting cycle, covering slag spreadability is preferable, can be uniformly
Spread in molten steel surface.Covering slag gas permeability is preferable, and flare is smaller and flame distribution is uniform, and slugging is uniform and stable, is not present
Phenomena such as conglomeration.Through statistics, which is 0.4kg/ tons of steel.After waiting slab coolings, strand under cold conditions, strand are observed
Surface totality flat smooth is without exception, and oscillation mark is clear, regular, shallower, and without slag, slag phenomenon is stained with, strand primes qualification rate is
More than 99%.
Embodiment 5
A kind of high-aluminum steel continuous crystallizer protecting slag, chemical composition and mass percentage are：CaO：38%、SiO2：24%、
MgO：6.6%、Li2O：2%、Al2O3：6%、Na2O：7%、F：2%、MnO：10%、C：4.1%, remaining is impurity.
Protection basicity of slag, that is, the CaO/SiO2It is 1.58, viscosity 0.65Pas at 1135 DEG C, 1300 DEG C of fusing point.
It opens when pouring starting, by the covering slag push-in crystallizer after adjustment, through observation, steel liquid fluctuating is drawn within 3mm
Speed is stablized in 0.6m/min, measures melt cinder layer thickness 10mm or so at this time.Hereafter a liquid slag layer is surveyed every 20min, thickness exists
9.5~10.5mm has reached ideal design standard.Through observation, in casting cycle, covering slag spreadability is preferable, can be uniformly
Spread in molten steel surface.Covering slag gas permeability is preferable, and flare is smaller and flame distribution is uniform, and slugging is uniform and stable, is not present
Phenomena such as conglomeration.Through statistics, which is 0.34kg/ tons of steel.After waiting slab coolings, strand under cold conditions, casting are observed
Base surface totality flat smooth is without exception, and oscillation mark is clear, regular, shallower, and nothing is stained with slag, slag phenomenon, strand primes qualification rate
It improves notable.
Embodiment 6
A kind of high-aluminum steel continuous crystallizer protecting slag, chemical composition and mass percentage are：CaO：39%, SiO2：28%、
MgO：4%、Li2O：3.5%、Al2O3：5%、Na2O：8%、F：3%、MnO：3%、C：6.3%, remaining is impurity.
Protection basicity of slag, that is, the CaO/SiO2It is 1.39, viscosity 0.55Pas at 1125 DEG C, 1300 DEG C of fusing point.
It opens when pouring starting, by the covering slag push-in crystallizer after adjustment, through observation, steel liquid fluctuating is drawn within 3mm
Speed is stablized in 0.35m/min, measures melt cinder layer thickness 11.5mm or so at this time.Hereafter a liquid slag layer, thickness are surveyed every 20min
In 11~12mm, ideal design standard is reached.Through observation, in casting cycle, covering slag spreadability is preferable, can be uniform
Spread in molten steel surface.Covering slag gas permeability is preferable, and flare is smaller and flame distribution is uniform, and slugging is uniform and stable, and there is no knots
Phenomena such as group.Through statistics, which is 0.36kg/ tons of steel.After waiting slab coolings, strand under cold conditions, strand are observed
Surface totality flat smooth is without exception, and oscillation mark is clear, regular, shallower, and without slag, slag phenomenon is stained with, strand primes qualification rate is
More than 99%.
Claims (4)
1. a kind of high-aluminum steel continuous crystallizer protecting slag, which is characterized in that its chemical composition and mass percentage are：CaO：
31%~39%, SiO2：20%~28%, MgO：3%~7%, Li2O：2%~4.5%, Al2O3：5%~10%, Na2O：5%~10%, F：2%
~5%, MnO：3%~10%, C：4%~8%, remaining is impurity.
2. high-aluminum steel continuous crystallizer protecting slag according to claim 1, which is characterized in that its chemical composition and quality
Percentage composition is：CaO：33%、SiO2：25%、MgO：6%、Li2O：4.5%、Al2O3：7%、Na2O：5%、F：4.5%、MnO：8%、C：
6.8%, remaining is impurity.
3. high-aluminum steel continuous crystallizer protecting slag according to claim 1, which is characterized in that the high-aluminum steel continuous casting
The basicity CaO/SiO of crystallizer protecting residue2It is 1.23~1.58.
4. high-aluminum steel continuous crystallizer protecting slag according to claim 1, which is characterized in that the high-aluminum steel continuous casting
0.55~0.8Pas of viscosity at 1120 DEG C~1150 DEG C, 1300 DEG C of the fusing point of crystallizer protecting residue.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549197A (en) * | 2020-05-26 | 2020-08-18 | 宝钢湛江钢铁有限公司 | Continuous casting method for high-aluminum steel plate blank |
| CN112355261A (en) * | 2020-10-26 | 2021-02-12 | 中天钢铁集团有限公司 | Crystallizer casting powder suitable for producing peritectic steel through efficient continuous casting |
| CN112828253A (en) * | 2021-01-06 | 2021-05-25 | 鞍钢股份有限公司 | Continuous casting covering slag for high manganese steel |
| CN113458351A (en) * | 2021-07-13 | 2021-10-01 | 鞍钢股份有限公司 | MnO-containing high-aluminum steel casting powder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180655A (en) * | 1984-02-28 | 1985-09-14 | Nippon Steel Corp | Molten metal surface protective agent for continuous casting of steel |
| JPH08117940A (en) * | 1994-10-31 | 1996-05-14 | Sumitomo Metal Ind Ltd | Mold powder for continuous steel casting |
| JPH11226712A (en) * | 1998-02-10 | 1999-08-24 | Kawasaki Steel Corp | Mold powder for casting high al-containing steel |
| CN101468386A (en) * | 2007-12-27 | 2009-07-01 | 攀钢集团攀枝花钢铁研究院 | Continuous casting mould fluxes and preparation method thereof |
| CN101745615A (en) * | 2010-01-21 | 2010-06-23 | 河南省西保冶材集团有限公司 | Function protecting material of continuous casting crystallizer for large square low-carbon steel |
| CN103128243A (en) * | 2013-03-12 | 2013-06-05 | 西峡龙成冶金材料有限公司 | High aluminum steel special continuous casting crystallizer casting powder |
| CN103909241A (en) * | 2014-03-20 | 2014-07-09 | 西峡县恒基冶材有限公司 | Crystallizer casting powder for high-aluminum steel continuous casting |
-
2017
- 2017-12-28 CN CN201711462653.1A patent/CN108176831A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180655A (en) * | 1984-02-28 | 1985-09-14 | Nippon Steel Corp | Molten metal surface protective agent for continuous casting of steel |
| JPH08117940A (en) * | 1994-10-31 | 1996-05-14 | Sumitomo Metal Ind Ltd | Mold powder for continuous steel casting |
| JPH11226712A (en) * | 1998-02-10 | 1999-08-24 | Kawasaki Steel Corp | Mold powder for casting high al-containing steel |
| CN101468386A (en) * | 2007-12-27 | 2009-07-01 | 攀钢集团攀枝花钢铁研究院 | Continuous casting mould fluxes and preparation method thereof |
| CN101745615A (en) * | 2010-01-21 | 2010-06-23 | 河南省西保冶材集团有限公司 | Function protecting material of continuous casting crystallizer for large square low-carbon steel |
| CN103128243A (en) * | 2013-03-12 | 2013-06-05 | 西峡龙成冶金材料有限公司 | High aluminum steel special continuous casting crystallizer casting powder |
| CN103909241A (en) * | 2014-03-20 | 2014-07-09 | 西峡县恒基冶材有限公司 | Crystallizer casting powder for high-aluminum steel continuous casting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549197A (en) * | 2020-05-26 | 2020-08-18 | 宝钢湛江钢铁有限公司 | Continuous casting method for high-aluminum steel plate blank |
| CN112355261A (en) * | 2020-10-26 | 2021-02-12 | 中天钢铁集团有限公司 | Crystallizer casting powder suitable for producing peritectic steel through efficient continuous casting |
| CN112828253A (en) * | 2021-01-06 | 2021-05-25 | 鞍钢股份有限公司 | Continuous casting covering slag for high manganese steel |
| CN113458351A (en) * | 2021-07-13 | 2021-10-01 | 鞍钢股份有限公司 | MnO-containing high-aluminum steel casting powder |
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Application publication date: 20180619 |