CN106583673A - Continuous-casting mold flux for decreasing sticking steel breakouts and preparation method thereof - Google Patents
Continuous-casting mold flux for decreasing sticking steel breakouts and preparation method thereof Download PDFInfo
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- CN106583673A CN106583673A CN201611167741.4A CN201611167741A CN106583673A CN 106583673 A CN106583673 A CN 106583673A CN 201611167741 A CN201611167741 A CN 201611167741A CN 106583673 A CN106583673 A CN 106583673A
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- covering slag
- continuous casting
- steel leakage
- bonding steel
- casting covering
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 238000009749 continuous casting Methods 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 230000004907 flux Effects 0.000 title abstract description 7
- 230000003247 decreasing effect Effects 0.000 title abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000126 substance Substances 0.000 claims abstract description 34
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 21
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 20
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 20
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 20
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 20
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 20
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 19
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 15
- 239000000155 melt Substances 0.000 claims abstract description 5
- 239000002893 slag Substances 0.000 claims description 102
- 239000002994 raw material Substances 0.000 claims description 43
- 239000002245 particle Substances 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 23
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 22
- 239000003575 carbonaceous material Substances 0.000 claims description 22
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 238000005469 granulation Methods 0.000 claims description 18
- 230000003179 granulation Effects 0.000 claims description 18
- 239000003595 mist Substances 0.000 claims description 18
- 239000006229 carbon black Substances 0.000 claims description 17
- 229910002804 graphite Inorganic materials 0.000 claims description 17
- 239000010439 graphite Substances 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 16
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 12
- 239000010436 fluorite Substances 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 11
- 235000017550 sodium carbonate Nutrition 0.000 claims description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 11
- 235000013024 sodium fluoride Nutrition 0.000 claims description 11
- 239000011775 sodium fluoride Substances 0.000 claims description 11
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 10
- 239000000440 bentonite Substances 0.000 claims description 10
- 229910000278 bentonite Inorganic materials 0.000 claims description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- 239000010456 wollastonite Substances 0.000 claims description 10
- 229910052882 wollastonite Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 229910001570 bauxite Inorganic materials 0.000 claims description 7
- 238000005461 lubrication Methods 0.000 abstract description 12
- 239000003818 cinder Substances 0.000 abstract description 11
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000000047 product Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 18
- 239000000463 material Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000005266 casting Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000009790 rate-determining step (RDS) Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000012216 screening Methods 0.000 description 6
- 239000004575 stone Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- LLQHSBBZNDXTIV-UHFFFAOYSA-N 6-[5-[[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]methyl]-4,5-dihydro-1,2-oxazol-3-yl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC1CC(=NO1)C1=CC2=C(NC(O2)=O)C=C1 LLQHSBBZNDXTIV-UHFFFAOYSA-N 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052661 anorthite Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000006105 batch ingredient Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- GWWPLLOVYSCJIO-UHFFFAOYSA-N dialuminum;calcium;disilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] GWWPLLOVYSCJIO-UHFFFAOYSA-N 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 graphite Compound Chemical class 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Continuous Casting (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a continuous-casting mold flux for decreasing sticking steel breakouts and a preparation method thereof. The continuous-casting mold flux for decreasing the sticking steel breakouts comprises the following chemical components of, by weight, 32.5-35.5 percent of SiO2, 29.5-31.5 percent of CaO, 1.5-3.0 percent of MgO, 2.2- 3.0 percent of Al2O3, 0.5-1.5 percent of Fe2O3, 11.0-13.0 percent of Na2O, 10.0-12.0 percent of F-, 3.0-4.0 percent of C solid and the balance unavoidable impurity, wherein the binary basicity is 0.87 to 0.93; a melting point is 1050 to 1070 DEG C; and the viscosity below 1300 DEG C is 0.115Pa*S to 0.135Pa*S. In the practical application of the mold flux, a flame in a crystallizer is uniform; the spreadability is better; caking and agglomerating phenomena do not exist; a melt cinder is stable; the lubrication is sufficient; and the rate of the sticking steel breakouts can be decreased to below 5 percent from original 10 to 20 percent.
Description
Technical field
The present invention relates to continuous casting manufacturing technique technical field, more particularly, to a kind of continuous casting covering slag of reduction bonding steel leakage
And preparation method thereof.
Background technology
In casting process, high-temperature molten steel flows into tundish by long nozzle from ladle first, then by submersed nozzle
Enter crystallizer from middle packet stream.In crystallizer, due to the heat transfer of molten steel and copper plate of crystallizer, solidification of molten steel is into certain thickness
Green shell, then under mold oscillation and throwing effect, this green shell can continuously be drawn out crystallizer, into two cold-zones；Such as
Fruit liquid fluctuating is excessive or covering slag flow into it is uneven etc. cause poor lubrication between green shell and crystallizer, bonding will occur existing
As.Particularly in high draw speed plate blank continuous casting, wide thickness plate continuous casting and sheet blank continuous casting, because initial solidification shell grows uniformity and guarantor
Shield slag flows into stability and is remarkably decreased, and green shell is easy to be bondd with copper plate of crystallizer.After green shell bonds, if not having
Timely take removing measure, then under mold oscillation and throwing effect, green shell can constantly be torn and solidify again,
Cause breach continuously to move down, bleed-out has been occurred as soon as when reaching crystallizer and exporting, here it is bonding steel leakage, is casting process
In main bleed-out form.
The influence factor of bonding steel leakage has a lot, wherein mainly having covering slag, molten steel condition, pouring operation, apparatus factor
Deng.Covering slag melts in a crystallizer bad, and slag bar is formed on the upside of crystallizer wall makes melt cinder not enough, hinders or reduce melting
The covering slag of state, when larger fluctuation occurs in molten steel face in crystallizer, also occurs the molten slag layer tomography at meniscus, causes knot
Slag film fracture between brilliant device and green shell, lubricates bad；When molten steel cleanliness is not high, such as covering slag absorbs substantial amounts of A12O3Deng deoxidation
After product or resistance to material, its viscosity can be made to increase, covering slag consumption is reduced, cause melt cinder to flow into deficiency etc., so as to affect covering slag
Lubricant effect；When covering slag can not form slag film on crystallizer wall, lubrication state deteriorates, the green shell solidified on crystallizer wall
It is torn by frictional force, by solidification of molten steel supplementary in breach, healing, is then torn again, so gone down repeatedly, this is weak
Go out at green shell after crystallizer, bonding steel leakage occurs due to holding the static pressure that can't stand molten steel.Therefore continuous casting covering slag is to affect leakage
The principal element of steel, and bleed-out has had a strong impact on the direct motion of continuous casting, and continuous casting machine can be damaged, cause huge Jing
Ji loss, therefore by improveing to covering slag, and then reduce the meaning during bonding steel leakage has.
Chinese Patent Application No. 200810201555.7 discloses a kind of anti-bonding bleed-out continuous casting covering slag, and its composition is by weight
Measuring percentages is：Al2O3：2%～8%, F：2%～7%, Na2O：4%～8%, Li2O：<4%, B2O3：2%～15%,
C：0.7%～3%, the impurity that raw material is brought into：<3%, remaining is CaO and SiO2, wherein CaO/SiO2（Weight ratio）For 0.5～
0.8.The mold flux property is as follows：Setting temperature<980 DEG C, 1300 DEG C of viscosity be 0.2～0.5Pa.s, process of setting
Crystal is not separated out.The covering slag viscosity is bigger than normal, affect slag mobility, covering slag bonding probability than larger, so as to cause Lou
The probability of steel is than larger.
Chinese Patent Application No. 201310540920.8 discloses a kind of automobile plate continuous casting ultra-low-carbon steel, mild steel crystallization
Device covering slag, by weight percentage, its chemical composition is：27%<CaO<33%, 30%<SiO2<36 %, 7%<Al2O3+
MgO<14 %, Fe2O3<3%, 3%<F-<8%, 7%<R2O<12%, 0.5%<C<3%, balance of impurity, the R2O is alkali
Metal oxide, basicity is 0.75-1.1, and covering slag prepared by the invention is the surface in order to improve strand lubrication, improve strand
Quality, and viscosity is bigger than normal, is not suitable for improving bonding steel leakage.
The content of the invention
In view of this, the purpose of the present invention is for the deficiencies in the prior art, there is provided a kind of continuous casting of reduction bonding steel leakage
Covering slag, the continuous casting covering slag in actual application, preferably, without conglomeration tie by product even flame in crystallizer, spreadability
Block phenomenon, melt cinder is stable, and lubrication is abundant, and bonding steel leakage rate can be made to be reduced to less than 5% from original 10-20%.
To reach above-mentioned purpose, the present invention is employed the following technical solutions：
A kind of continuous casting covering slag for reducing bonding steel leakage, chemical composition is by weight percentage：SiO2：32.5-35.5%,
CaO：29.5-31.5%, MgO：1.5-3.0%, Al2O32.2-3.0%, Fe2O3：0.5-1.5%, Na2O：11.0-13.0%, F-：
10.0-12.0%, C are solid：3.0-4.0%, balance of inevitable impurity, dual alkalinity：0.87-0.93, fusing point：1050-
1070 DEG C, viscosity is 0.115-0.135 Pa.S at 1300 DEG C.
Further, the continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：
Pre- melt：20-40%, soda ash：8-10%, fluorite：8-11%, quartz：5-7%, wollastonite：24-34%, bentonite：2-5%, aluminium alum
Soil：0-2%, sodium fluoride：5-8%, ice crystal：1-2%, carbonaceous material：2-5%, sodium cellulose glycolate：1-3% .
Further, SiO in the pre- melt2：33-35%, CaO：36-38%, MgO≤3.0%, Al2O3：25-4.5%,
Fe2O3≤ 2.0%, Na2O：7.5-9.5%, F：6.0-8.0%, moisture≤0.5%.
Further, the carbonaceous material is carbon black and/or amorphous graphite.
Further, the carbonaceous material is carbon black and amorphous graphite by weight 0.5-2：1 mixes.
Further, each moisture content of raw material≤1.0%, raw material particle size is controlled in -320 mesh >=95%.
A kind of preparation method of the continuous casting covering slag for reducing bonding steel leakage, comprises the following steps：
（1）Add water slurrying after raw material is well mixed, and obtains slip；
（2）Slip is delivered to into granulation tower carries out mist projection granulating, then screens out the particle that particle diameter is 0.15-1mm, samples detectionization
Study point, packaging into products.
Further, the step（1）Middle mixing time is 60-70min.
Further, the step（1）Middle pulp density is 58-65%.
Further, the step（2）Middle mist projection granulating is that slip Jing plunger displacement pumps pressurization is delivered to into granulation tower, described
Plunger pump pressure is 0.8-1.5MPa, and defeated slurry speed is 20-25L/min, and spray gun sprays the aperture of piece during the mist projection granulating
2.0mm, the granulation tower tower temperature is 650-700 DEG C.
The invention has the beneficial effects as follows：
1st, the bonding steel leakage during the present invention is in order to reduce casting process, changes to the chemical composition and raw material of continuous casting covering slag
It is kind, the basicity and viscosity of covering slag is adjusted by controlling raw material, burn-off rate is controlled by improving the species with carbon, so as to
Bonding is reduced, bonding steel leakage rate is reduced；The product of preparation in actual application, sprawl by product even flame in crystallizer
Property preferably, without a caking phenomenon, melt cinder is stable, and lubrication is abundant, and bonding steel leakage rate can be made to be reduced to less than 5% from 10-20%.
2nd, the basicity of covering slag is to embody an important indicator of covering slag crystallization rate, heat transfer, lubrication and dross inclusion adsorption,
Basicity is higher, and crystallization rate is higher, and the high-melting-point crystalline state thermal resistance of precipitation is big, can effectively slow down heat transfer, green shell is uniformly given birth to
Into, the probability that crackle occurs in the stronger steel grade of crack sensitivity can be effectively reduced, but the high thermal resistance of basicity is big, goes out the base of crystallizer
Shell is thin, and the crystalline state of precipitation is in particle porous shape, and lubrication is degrading again, increases resistance of billet withdrawal, increases the generation of bonding accident, this
Invention improves the vitrifying tendency of slag film to improve greasy property of the covering slag between crystallizer and solidified shell, reduces
Bonding probability, by the basicity control of the product for preparing in 0.87-0.93, that is, controlling covering slag has relatively low basicity to improve profit
Sliding effect, while reducing the generating rate of mold liquid level slag bar, it is to avoid bonding accident occurs.
3rd, the present invention coexists improvement thawing phenomenon using various flux, and various flux such as sodium fluoride and ice crystal coexist, can
The usage amount of soda ash and fluorite is reduced, so as to improve the fusing distance of each batch ingredients, point molten tendency is reduced to reduce covering slag
Sintering trend, reduces the generation of slag bar slag circle.So that covering slag melts uniformly in crystallizer, melt cinder is stable, the distribution of slag film
Uniformly, it is ensured that initial solidification shell generates uniform.
4th, suitable viscosity number can guarantee that covering slag slag smoothly inserts passage between crystallizer and strand, ensures slag thickness
Degree, the key for ensureing rational heat transfer rate and lubrication strand, and relatively low viscosity can improve the mobility of slag, increase slag
Consumption, improves lubrication, to adapt to high pulling rate needs, equally reduces the purpose of bonding probability.Therefore the present invention is by raw material
Fluorite adjusting the viscosity of covering slag, control covering slag has low viscosity i.e. 0.115-0.135 Pa.S, so as to reduce aluminium alum
The usage amount of soil, Al2O3The fusing point that covering slag can be made is raised, and anorthite, too high Al are easily generated during too high levels2O3Can also
The viscosity for making covering slag increases, and is unfavorable for that absorption is mingled with.The range of viscosities can improve melt cinder pouring volume, improve lubrication, make slag
Film thickness and heat transfer are uniform, reduce bonding probability.
5th, in addition the present invention also matches somebody with somebody carbon, i.e. amorphous graphite and carbon black compounding use using compound, to control the molten of covering slag
Change speed, so as to reduce bonding steel leakage.The burn-off rate of covering slag determines the melt cinder thickness formed on Mold face
Degree and slag consumption.If burn-off rate is too fast, slag layer is difficult to keep, and increases heat loss, and melt cinder face is easily crusted, and may be caused
Slag inclusion；The liquid slag layer that burn-off rate is formed slowly excessively is excessively thin, and too fast excessively slow burn-off rate all easily causes the became uneven of slag film,
Casting billet surface is set to produce lobe or bonding steel leakage.To control suitable burn-off rate, continuous casting covering slag should have sandwich construction, i.e.,
Slag layer, sinter layer, half crucible zone and molten slag layer, half crucible zone should have enough thickness, with constantly to molten slag layer provide melt cinder, when
Molten slag layer remains to maintain enough thickness when pulling rate changes.Therefore the present invention is using the compound method with carbon, the decentralization of carbon black
Larger, ignition point is relatively low, and the effect of isolation base-material particle can be given full play at a lower temperature, and graphite ignition point is higher, in height
It is more suitable as skeleton particle under temperature, can efficiently control the melting characteristic of covering slag using the compound method with carbon so as to
More stable melting characteristic is kept within the scope of relatively wide temperature, so as to meet the needs of high casting speed continuous casting.
Specific embodiment
With reference to specific embodiment, the invention will be further described, the pre- melt adopted in each embodiment of the invention
The content of middle main chemical compositions is respectively SiO2：33-35%, CaO：36-38%, MgO≤3.0%, Al2O3：2.5-4.5%, Fe2O3
≤ 2.0%, Na2O：7.5-9.5%, F：6.0-8.0%, moisture≤0.5%.
Embodiment 1
A kind of preparation method of the continuous casting covering slag for reducing bonding steel leakage, comprises the following steps：
（1）Dispensing：The continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：Fritting
Material：20%, soda ash：10%, fluorite：11%, quartz：7%, wollastonite：34%, bentonite：2%, bauxite：2%, sodium fluoride：8%, ice
Spar：2%, carbonaceous material：3%, sodium cellulose glycolate：1%, wherein carbonaceous material includes amorphous graphite 2% and carbon black 1%；
（2）Add water slurrying after raw material is well mixed, and mixing time is 60min, obtains slip, and the concentration of slip is 58%；
（3）The pressurization of slip Jing plunger displacement pumps is delivered to into granulation tower carries out mist projection granulating, and wherein plunger pump pressure is 0.8MPa, defeated slurry speed
Spend for 20L/min, spray gun sprays the aperture 2.0mm of piece during mist projection granulating, granulation tower tower temperature is 650 DEG C, and then screening out particle diameter is
The particle of 0.15-1mm, sampling detection chemical composition, packaging into products.
Wherein rate-determining steps（1）In each moisture content of raw material≤1.0%, raw material particle size control in -320 mesh >=95%, i.e. grain
320 purposes that footpath is less than account for the 95% of raw material weight.
Chemical composition is by weight percentage in the product for preparing after testing：SiO2：32.9%, CaO：29.8%, MgO：
2.2%, Al2O3：3.0%, Fe2O3：0.5%, Na2O：13.0%, F-：11.8%, C are solid：3.8%, balance of inevitable impurity, two
First basicity：0.91, fusing point：1050 DEG C, viscosity is 0.115Pa.S at 1300 DEG C.
Embodiment 2
A kind of preparation method of the continuous casting covering slag for reducing bonding steel leakage, comprises the following steps：
（1）Dispensing：The continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：Fritting
Material：40%, soda ash：8%, fluorite：8%, quartz：5%, wollastonite：24%, bentonite：5%, sodium fluoride：5%, ice crystal：1%, carbonaceous
Material：2%, sodium cellulose glycolate：2%, wherein carbonaceous material includes amorphous graphite 1% and carbon black 1%；
（2）Add water slurrying after raw material is well mixed, and mixing time is 65min, obtains slip, and the concentration of slip is 60%；
（3）The pressurization of slip Jing plunger displacement pumps is delivered to into granulation tower carries out mist projection granulating, and wherein plunger pump pressure is 1.0MPa, defeated slurry speed
Spend for 21L/min, spray gun sprays the aperture 2.0mm of piece during mist projection granulating, granulation tower tower temperature is 660 DEG C, and then screening out particle diameter is
The particle of 0.15-1mm, sampling detection chemical composition, packaging into products.
Wherein rate-determining steps（1）In each moisture content of raw material≤1.0%, raw material particle size control in -320 mesh >=95%, i.e. grain
320 purposes that footpath is less than account for the 95% of raw material weight.
Chemical composition is by weight percentage in the product for preparing after testing：SiO2：34.5%, CaO：31%, MgO：
2.5%, Al2O3：2.2%, Fe2O3：1.5%, Na2O：12.5%, F-：10.2%, C are solid：3.8%, balance of inevitable impurity, two
First basicity：0.90, fusing point：1070 DEG C, viscosity is 0.135 Pa.S at 1300 DEG C.
Embodiment 3
A kind of preparation method of the continuous casting covering slag for reducing bonding steel leakage, comprises the following steps：
（1）Dispensing：The continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：Fritting
Material：29%, soda ash：9%, fluorite：9%, quartz：6%, wollastonite：26%, bentonite：3%, bauxite：2%, sodium fluoride：7%, ice crystal
Stone：2%, carbonaceous material：4%, sodium cellulose glycolate：3%, wherein carbonaceous material includes amorphous graphite 2% and carbon black 2%；
（2）Add water slurrying after raw material is well mixed, and mixing time is 70min, obtains slip, and the concentration of slip is 62%；
（3）The pressurization of slip Jing plunger displacement pumps is delivered to into granulation tower carries out mist projection granulating, and wherein plunger pump pressure is 1.2MPa, defeated slurry speed
Spend for 22L/min, spray gun sprays the aperture 2.0mm of piece during mist projection granulating, granulation tower tower temperature is 670 DEG C, and then screening out particle diameter is
The particle of 0.15-1mm, sampling detection chemical composition, packaging into products.
Wherein rate-determining steps（1）In each moisture content of raw material≤1.0%, raw material particle size control in -320 mesh >=95%, i.e. grain
320 purposes that footpath is less than account for the 95% of raw material weight.
Chemical composition is by weight percentage in the product for preparing after testing：SiO2：35.5%, CaO：31.5%, MgO：
2.8%, Al2O3：2.8%, Fe2O3：0.8%, Na2O：11.0%, F-：10.6%, C are solid：3.0%, balance of inevitable impurity, two
First basicity：0.89, fusing point：1060 DEG C, viscosity is 0.125Pa.S at 1300 DEG C.
Embodiment 4
A kind of preparation method of the continuous casting covering slag for reducing bonding steel leakage, comprises the following steps：
（1）Dispensing：The continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：Fritting
Material：30%, soda ash：8%, fluorite：10%, quartz：5%, wollastonite：28%, bentonite：4%, bauxite：1%, sodium fluoride：6%, ice crystal
Stone 1.5%, carbonaceous material：3.5%, sodium cellulose glycolate：3%, wherein carbonaceous material includes amorphous graphite 1.5% and carbon black 2%；
（2）Add water slurrying after raw material is well mixed, and mixing time is 60min, obtains slip, and the concentration of slip is 60%；
（3）The pressurization of slip Jing plunger displacement pumps is delivered to into granulation tower carries out mist projection granulating, and wherein plunger pump pressure is 1.2MPa, defeated slurry speed
Spend for 23L/min, spray gun sprays the aperture 2.0mm of piece during mist projection granulating, granulation tower tower temperature is 680 DEG C, and then screening out particle diameter is
The particle of 0.15-1mm, sampling detection chemical composition, packaging into products.
Wherein rate-determining steps（1）In each moisture content of raw material≤1.0%, raw material particle size control in -320 mesh >=95%, i.e. grain
320 purposes that footpath is less than account for the 95% of raw material weight.
Chemical composition is by weight percentage in the product for preparing after testing：SiO2：33.5%, CaO：30.8%, MgO：
1.9%, Al2O3：2.7%, Fe2O3：1.5%, Na2O：12.4%, F-：10.8%, C are solid：3.5%, balance of inevitable impurity, two
First basicity：0.92, fusing point：1065 DEG C, viscosity is 0.116Pa.S at 1300 DEG C.
Embodiment 5
A kind of preparation method of the continuous casting covering slag for reducing bonding steel leakage, comprises the following steps：
（1）Dispensing：The continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：Fritting
Material：35%, soda ash：8%, fluorite：8%, quartz：6%, wollastonite：30%, bentonite：2%, sodium fluoride：5%, ice crystal：1%, carbonaceous
Material：3%, sodium cellulose glycolate：2%, wherein carbonaceous material includes amorphous graphite 1% and carbon black 2%；
（2）Add water slurrying after raw material is well mixed, and mixing time is 65min, obtains slip, and the concentration of slip is 65%；
（3）The pressurization of slip Jing plunger displacement pumps is delivered to into granulation tower carries out mist projection granulating, and wherein plunger pump pressure is 1.5MPa, defeated slurry speed
Spend for 24L/min, spray gun sprays the aperture 2.0mm of piece during mist projection granulating, granulation tower tower temperature is 690 DEG C, and then screening out particle diameter is
The particle of 0.15-1mm, sampling detection chemical composition, packaging into products.
Wherein rate-determining steps（1）In each moisture content of raw material≤1.0%, raw material particle size control in -320 mesh >=95%, i.e. grain
320 purposes that footpath is less than account for the 95% of raw material weight.
Chemical composition is by weight percentage in the product for preparing after testing：SiO2：33.8%, CaO：29.5%, MgO：
3.0%, Al2O3：3.0%, Fe2O3：1.2%, Na2O：12.0%, F-：11.5%, C are solid：3.7%, balance of inevitable impurity, two
First basicity：0.87, fusing point：1058 DEG C, viscosity is 0.130 Pa.S at 1300 DEG C.
Embodiment 6
A kind of preparation method of the continuous casting covering slag for reducing bonding steel leakage, comprises the following steps：
（1）Dispensing：The continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：Fritting
Material：25%, soda ash：9%, fluorite：11%, quartz：7%, wollastonite：25%, bentonite：5%, bauxite：1%, sodium fluoride：8%, ice crystal
Stone：2%, carbonaceous material：5%, sodium cellulose glycolate：2%, wherein carbonaceous material includes amorphous graphite 2% and carbon black 3%；
（2）Add water slurrying after raw material is well mixed, and mixing time is 70min, obtains slip, and the concentration of slip is 62%；
（3）The pressurization of slip Jing plunger displacement pumps is delivered to into granulation tower carries out mist projection granulating, and wherein plunger pump pressure is 0.8MPa, defeated slurry speed
Spend for 25L/min, spray gun sprays the aperture 2.0mm of piece during mist projection granulating, granulation tower tower temperature is 700 DEG C, and then screening out particle diameter is
The particle of 0.15-1mm, sampling detection chemical composition, packaging into products.
Wherein rate-determining steps（1）In each moisture content of raw material≤1.0%, raw material particle size control in -320 mesh >=95%, i.e. grain
320 purposes that footpath is less than account for the 95% of raw material weight.
Chemical composition is by weight percentage in the product for preparing after testing：SiO2：32.5%, CaO：30.1%, MgO：
1.5%, Al2O3：2.6%, Fe2O3：1.4%, Na2O：12.8%, F-：12.0%, C are solid：4.0%, balance of inevitable impurity, two
First basicity：0.93, fusing point：1070 DEG C, viscosity is 0.117Pa.S at 1300 DEG C.
Embodiment 7
Embodiment 7 is substantially the same manner as Example 3, and difference is：Carbonaceous material in embodiment 7 is amorphous graphite, i.e., one
A kind of preparation method of the continuous casting covering slag for reducing bonding steel leakage, comprises the following steps：
（1）Dispensing：The continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：Fritting
Material：29%, soda ash：9%, fluorite：9%, quartz：6%, wollastonite：26%, bentonite：3%, bauxite：2%, sodium fluoride 7%, ice crystal
Stone：2%, amorphous graphite：4%, sodium cellulose glycolate：3%；
Other techniques are same as Example 3.
Embodiment 8
Embodiment 8 is substantially the same manner as Example 3, and difference is：Carbonaceous material in embodiment 8 is carbon black, and one kind is reduced
The preparation method of the continuous casting covering slag of bonding steel leakage, comprises the following steps：
（1）Dispensing：The continuous casting covering slag for reducing bonding steel leakage is prepared by following raw material by weight percentage：Fritting
Material：29%, soda ash：9%, fluorite：9%, quartz：6%, wollastonite：26%, bentonite：3%, bauxite：2%, sodium fluoride 7%, ice crystal
Stone：2%, carbon black：4%, sodium cellulose glycolate：3%；
Other techniques are same as Example 3.
Comparative example 1
The covering slag physical and chemical index of comparative example 1 is as follows：Wherein chemical composition is by weight percentage：SiO2：31.8%, CaO：
32.0%, MgO：3.7%, Al2O3：2.4%, Fe2O3：0.4%, Na2O：9.5%, F：8.6%, C are solid：5.0%, dual alkalinity：1.01, melt
Point：1092 DEG C, viscosity：0.123 Pa.S.
Comparative example 2
The covering slag physical and chemical index of comparative example 2 is as follows：Wherein chemical composition is by weight percentage：SiO2：33.3%, CaO：
28.3%, MgO：1.8%, Al2O3：3.8%, Fe2O3：0.7%, Na2O：12.6%, F：9.3%, C are solid：4.5%, dual alkalinity：0.85,
Fusing point：1090 DEG C, viscosity：0.145 Pa.S.
Comparative example 3
Basicity is same as Example 3 in the covering slag physical and chemical index of comparative example 3, but viscosity is different, other chemical constituents substantially phase
Together：I.e. chemical composition is by weight percentage：SiO2：35.5%, CaO：31.5%, MgO：2.8%, Al2O3：1.8%, Fe2O3：
0.8%, Na2O：11.0%, F-：11.6%, C are solid：3.0%, balance of inevitable impurity, dual alkalinity：0.89, fusing point：1060
DEG C, viscosity is 0.110Pa.S at 1300 DEG C.
Comparative example 4
Basicity is same as Example 3 in the covering slag physical and chemical index of comparative example 4, but viscosity is different, other chemical constituents substantially phase
Together：I.e. chemical composition is by weight percentage：SiO2：35.5%, CaO：31.5%, MgO：2.8%, Al2O3：3.0%, Fe2O3：
0.8%, Na2O：10.0%, F-：8.6%, C are solid：3.0%, balance of inevitable impurity, dual alkalinity：0.89, fusing point：1060
DEG C, viscosity is 0.155Pa.S at 1300 DEG C.
Comparative example 5
Viscosity is same as Example 3 in the covering slag physical and chemical index of comparative example 5, but basicity is different, other chemical constituents substantially phase
Together：I.e. chemical composition is by weight percentage：SiO2：31.0%, CaO：34.0%, MgO：2.8%, Al2O3：4.2%, Fe2O3：
0.8%, Na2O：11.0%, F-：10.0%, C are solid：3.0%, balance of inevitable impurity, dual alkalinity：1.10, fusing point：
1060 DEG C, viscosity is 0.125Pa.S at 1300 DEG C.
Comparative example 6
Viscosity is same as Example 3 in the covering slag physical and chemical index of comparative example 6, but basicity is different, other chemical constituents substantially phase
Together：Chemical composition is by weight percentage：SiO2：34.8%, CaO：31.0%, MgO：2.8%, Al2O3：2.8%, Fe2O3：
0.8%, Na2O：11.0%, F-：10.6%, C are solid：3.0%, balance of inevitable impurity, dual alkalinity：0.89, fusing point：
1060 DEG C, viscosity is 0.125Pa.S at 1300 DEG C.
Application test
Continuous casting covering slag in embodiment 1-8 and comparative example 1-6 is respectively applied to the continuous casting of multiple batches of different steel grades
During, and sticking break-out probability is counted, result of the test is shown in Table 1.
The application test result of table 1
As shown in Table 1, the covering slag in comparative example 1-6 is in specific application test, and slag bar is more, big, frequently occurs bonding leakage
Steel phenomenon, the sticking break-out rate for counting 50 batches is 10-20%；And the product for adopting embodiment of the present invention 1-6 to prepare, connecting
During casting, covering slag even flame in crystallizer, preferably, without conglomeration caking phenomenon, melt cinder is stable for spreadability, and lubrication is abundant,
Bonding steel leakage rate is below 5%.
Embodiment 7 and embodiment 8 are identical with the condition of embodiment 3, and difference is that carbonaceous material does not adopt amorphous graphite
Compound with carbon black, but be amorphous graphite only with one kind, the i.e. carbonaceous material of embodiment 7, embodiment 8 is carbon black, but is implemented
The sticking break-out rate of example 7 and embodiment 8 is big than embodiment 3, illustrates that amorphous graphite and carbon black compounding can improve sticking break-out
Probability.
And product items physicochemical property is differed with embodiment 1-6 in comparative example 1-2 of the present invention, sticking break-out rate exists
15-20%.The basicity of the product in comparative example 3-4 is same as Example 3, but viscosity is different, the viscosity of comparative example 5-6 product
It is same as Example 3, but basicity is different, and the sticking break-out rate of comparative example 3-6 is more much higher than embodiment 3, illustrates that the present invention changes
The viscosity and basicity index of kind product is greatly improved to sticking break-out rate tool.Covering slag prepared by the present invention adapts to pulling rate
Require in 1.3-1.5m/min pulling rates, effect is significant.
Finally illustrate, above example is only to illustrate technical scheme and unrestricted, and this area is common
Other modifications or equivalent that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover in the middle of scope of the presently claimed invention.
Claims (10)
1. it is a kind of reduce bonding steel leakage continuous casting covering slag, it is characterised in that：Chemical composition is by weight percentage：SiO2：
32.5-35.5%, CaO：29.5-31.5%, MgO：1.5-3.0%, Al2O32.2-3.0%, Fe2O3：0.5-1.5%, Na2O：11.0-
13.0%, F-：10.0-12.0%, C are solid：3.0-4.0%, balance of inevitable impurity, dual alkalinity：0.87-0.93, melts
Point：1050-1070 DEG C, viscosity is 0.115-0.135 Pa.S at 1300 DEG C.
2. it is according to claim 1 it is a kind of reduce bonding steel leakage continuous casting covering slag, it is characterised in that：It is described to reduce bonding
The continuous casting covering slag of bleed-out is prepared by following raw material by weight percentage：Pre- melt：20-40%, soda ash：8-10%, fluorite：
8-11%, quartz：5-7%, wollastonite：24-34%, bentonite：2-5%, bauxite：0-2%, sodium fluoride：5-8%, ice crystal 1-2%,
Carbonaceous material：2-5%, sodium cellulose glycolate：1-3% .
3. it is according to claim 2 it is a kind of reduce bonding steel leakage continuous casting covering slag, it is characterised in that：In the pre- melt
SiO2：33-35%, CaO：36-38%, MgO≤3.0%, Al2O3：2.5-4.5%, Fe2O3≤ 2.0%, Na2O：7.5-9.5%, F：
6.0-8.0%, moisture≤0.5%.
4. it is according to claim 2 it is a kind of reduce bonding steel leakage continuous casting covering slag, it is characterised in that：The carbonaceous material
For carbon black and/or amorphous graphite.
5. it is according to claim 4 it is a kind of reduce bonding steel leakage continuous casting covering slag, it is characterised in that：The carbonaceous material
It is carbon black and amorphous graphite 0.5-2 by weight：1 mixes.
6. it is according to claim 2 it is a kind of reduce bonding steel leakage continuous casting covering slag, it is characterised in that：Each raw water
Content≤1.0%, raw material particle size is divided to control in -320 mesh >=95%.
7. it is a kind of it is according to claim 2 reduce bonding steel leakage continuous casting covering slag preparation method, it is characterised in that：Bag
Include following steps：
（1）Add water slurrying after raw material is well mixed, and obtains slip；
（2）Slip is delivered to into granulation tower carries out mist projection granulating, then screens out the particle that particle diameter is 0.15-1mm, samples detectionization
Study point, packaging into products.
8. it is according to claim 7 it is a kind of reduce bonding steel leakage continuous casting covering slag preparation method, it is characterised in that：Institute
State step（1）Middle mixing time is 60-70min.
9. it is according to claim 7 it is a kind of reduce bonding steel leakage continuous casting covering slag preparation method, it is characterised in that：Institute
State step（1）Middle pulp density is 58-65%.
10. it is according to claim 7 it is a kind of reduce bonding steel leakage continuous casting covering slag preparation method, it is characterised in that：
The step（2）Middle mist projection granulating is that slip Jing plunger displacement pumps pressurization is delivered to into granulation tower, and the plunger pump pressure is 0.8-
1.5MPa, defeated slurry speed is 20-25L/min, and spray gun sprays the aperture 2.0mm of piece, the granulation tower tower temperature during mist projection granulating
For 650-700 DEG C.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145107A (en) * | 2017-06-27 | 2018-06-12 | 贺州市创伟冶金耐材有限公司 | A kind of low viscosity crystallizer protecting residue |
| CN109894588A (en) * | 2019-04-18 | 2019-06-18 | 洛阳市科丰冶金新材料（集团）有限公司 | One kind is completely without head high efficiency continuous casting ESP mild steel mould flux and preparation method thereof |
| CN110000352A (en) * | 2019-05-05 | 2019-07-12 | 西峡县西保冶金材料有限公司 | A kind of continuous-casting crystallizer especially used function protective material of plastic die steel |
| CN112620599A (en) * | 2020-12-29 | 2021-04-09 | 河南通宇冶材集团有限公司 | Ultralow-alkalinity high-vitrification protective slag for bloom medium-high carbon steel and preparation method thereof |
| CN114045374A (en) * | 2021-11-19 | 2022-02-15 | 西峡龙成冶金材料有限公司 | Special covering slag for nodular cast iron and preparation method and application thereof |
| CN116871472A (en) * | 2023-07-13 | 2023-10-13 | 张家口汇德冶金材料有限公司 | Aluminum-containing middle rolling plate covering slag |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60244454A (en) * | 1984-05-17 | 1985-12-04 | Nippon Steel Corp | Additive for continuous casting mold and its production |
| CN101502871A (en) * | 2009-02-27 | 2009-08-12 | 莱芜钢铁股份有限公司 | Cogged ingot continuous casting crystallizer protecting slag and preparation method thereof |
| CN102728797A (en) * | 2012-06-15 | 2012-10-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Crystallizer protective slag for effectively controlling carbon steel cracks in compact strip production (CSP) |
| CN102773438A (en) * | 2012-07-25 | 2012-11-14 | 洛阳市科丰冶金新材料（集团）有限公司 | Slag powder of continuous casting and rolling sheet billet low-carbon steel crystallizer |
| CN105328151A (en) * | 2015-12-07 | 2016-02-17 | 河南通宇冶材集团有限公司 | Casting powder for continuous casting crystallizer and preparation method of casting powder |
| CN105344955A (en) * | 2015-12-18 | 2016-02-24 | 河南通宇冶材集团有限公司 | High-strength continuous casting crystallizer mold flux and preparing method thereof |
| CN105642850A (en) * | 2016-03-09 | 2016-06-08 | 西峡龙成冶金材料有限公司 | Continuous casting crystallizer covering slag for ASP medium-carbon steel and a preparation method thereof |
-
2016
- 2016-12-16 CN CN201611167741.4A patent/CN106583673B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60244454A (en) * | 1984-05-17 | 1985-12-04 | Nippon Steel Corp | Additive for continuous casting mold and its production |
| CN101502871A (en) * | 2009-02-27 | 2009-08-12 | 莱芜钢铁股份有限公司 | Cogged ingot continuous casting crystallizer protecting slag and preparation method thereof |
| CN102728797A (en) * | 2012-06-15 | 2012-10-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Crystallizer protective slag for effectively controlling carbon steel cracks in compact strip production (CSP) |
| CN102773438A (en) * | 2012-07-25 | 2012-11-14 | 洛阳市科丰冶金新材料（集团）有限公司 | Slag powder of continuous casting and rolling sheet billet low-carbon steel crystallizer |
| CN105328151A (en) * | 2015-12-07 | 2016-02-17 | 河南通宇冶材集团有限公司 | Casting powder for continuous casting crystallizer and preparation method of casting powder |
| CN105344955A (en) * | 2015-12-18 | 2016-02-24 | 河南通宇冶材集团有限公司 | High-strength continuous casting crystallizer mold flux and preparing method thereof |
| CN105642850A (en) * | 2016-03-09 | 2016-06-08 | 西峡龙成冶金材料有限公司 | Continuous casting crystallizer covering slag for ASP medium-carbon steel and a preparation method thereof |
Cited By (12)
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|---|---|---|---|---|
| CN108145107A (en) * | 2017-06-27 | 2018-06-12 | 贺州市创伟冶金耐材有限公司 | A kind of low viscosity crystallizer protecting residue |
| CN109894588A (en) * | 2019-04-18 | 2019-06-18 | 洛阳市科丰冶金新材料（集团）有限公司 | One kind is completely without head high efficiency continuous casting ESP mild steel mould flux and preparation method thereof |
| CN109894588B (en) * | 2019-04-18 | 2021-06-22 | 洛阳市科丰冶金新材料（集团）有限公司 | Special all-endless high-efficiency continuous casting protective slag for ESP (electronic stability program) low-carbon steel and preparation method thereof |
| CN110000352A (en) * | 2019-05-05 | 2019-07-12 | 西峡县西保冶金材料有限公司 | A kind of continuous-casting crystallizer especially used function protective material of plastic die steel |
| CN110000352B (en) * | 2019-05-05 | 2021-06-15 | 西峡县西保冶金材料有限公司 | Function protection material for continuous casting crystallizer special for plastic mould steel |
| CN112620599A (en) * | 2020-12-29 | 2021-04-09 | 河南通宇冶材集团有限公司 | Ultralow-alkalinity high-vitrification protective slag for bloom medium-high carbon steel and preparation method thereof |
| CN112620599B (en) * | 2020-12-29 | 2022-04-08 | 河南通宇冶材集团有限公司 | Ultralow-alkalinity high-vitrification protective slag for bloom medium-high carbon steel and preparation method thereof |
| CN114045374A (en) * | 2021-11-19 | 2022-02-15 | 西峡龙成冶金材料有限公司 | Special covering slag for nodular cast iron and preparation method and application thereof |
| CN116871472A (en) * | 2023-07-13 | 2023-10-13 | 张家口汇德冶金材料有限公司 | Aluminum-containing middle rolling plate covering slag |
| CN116871472B (en) * | 2023-07-13 | 2024-03-08 | 张家口汇德冶金材料有限公司 | Aluminum-containing middle rolling plate covering slag |
| CN117206481A (en) * | 2023-11-09 | 2023-12-12 | 北京科技大学 | Covering slag for high-pulling-speed continuous casting of high-carbon steel square billets and preparation method and application thereof |
| CN117206481B (en) * | 2023-11-09 | 2024-02-23 | 北京科技大学 | Covering slag for high-pulling-speed continuous casting of high-carbon steel square billets and preparation method and application thereof |
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Denomination of invention: A continuous casting protective slag and its preparation method for reducing bonded steel leakage Granted publication date: 20190426 Pledgee: Industrial and Commercial Bank of China Limited Xixia Branch Pledgor: HENAN TONGYU METALLURGY MATERIALS GROUP Co.,Ltd.|Henan Xuantong New Material Technology Co.,Ltd. Registration number: Y2024980042610 |