CN1298459C - Protective slag for continuous casting - Google Patents
Protective slag for continuous casting Download PDFInfo
- Publication number
- CN1298459C CN1298459C CNB2004100174809A CN200410017480A CN1298459C CN 1298459 C CN1298459 C CN 1298459C CN B2004100174809 A CNB2004100174809 A CN B2004100174809A CN 200410017480 A CN200410017480 A CN 200410017480A CN 1298459 C CN1298459 C CN 1298459C
- Authority
- CN
- China
- Prior art keywords
- lepidolite
- slag
- covering slag
- proportion
- sio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000002893 slag Substances 0.000 title claims abstract description 101
- 238000009749 continuous casting Methods 0.000 title claims description 15
- 230000001681 protective effect Effects 0.000 title 1
- 229910052629 lepidolite Inorganic materials 0.000 claims abstract description 36
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 16
- 235000019738 Limestone Nutrition 0.000 claims abstract description 15
- 239000006028 limestone Substances 0.000 claims abstract description 15
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000010436 fluorite Substances 0.000 claims abstract description 14
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- -1 clinker Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 19
- 238000005266 casting Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 3
- 239000004568 cement Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000011812 mixed powder Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 230000004907 flux Effects 0.000 description 9
- 239000011734 sodium Substances 0.000 description 9
- 239000010456 wollastonite Substances 0.000 description 9
- 229910052882 wollastonite Inorganic materials 0.000 description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 5
- 229910052808 lithium carbonate Inorganic materials 0.000 description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- 235000017550 sodium carbonate Nutrition 0.000 description 5
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 239000011775 sodium fluoride Substances 0.000 description 4
- 235000013024 sodium fluoride Nutrition 0.000 description 4
- MPPQGYCZBNURDG-UHFFFAOYSA-N 2-propionyl-6-dimethylaminonaphthalene Chemical compound C1=C(N(C)C)C=CC2=CC(C(=O)CC)=CC=C21 MPPQGYCZBNURDG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 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
- 239000006229 carbon black Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000010434 nepheline Substances 0.000 description 1
- 229910052664 nepheline Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Continuous Casting (AREA)
Abstract
The present invention relates to casting protecting slag, particularly to casting protecting slag using lepidolite as a main raw material. The casting protecting slag solves the defects of complex formula and fluxing agent addition requirement of the existing casting protecting slag. The casting protecting slag uses the lepidolite as the main raw material of premelting slag; the lepidolite and the other raw material has the respective weight portion proportion: the proportion of the lepidolite and cement clinker is from 1: 0.4 to 0.8, the proportion of the lepidolite and lime stone is from 1: 0.2 to 0.4, and the proportion of the lepidolite and fluorite is from 1: 0 to 0.3. after the raw material formed according to the proportion is melted and crushed, carbon material is added and uniformly mixed, or after the carbon material is uniformly mixed, powder or granular protecting slag is produced through the techniques of regranulation and the like or the lepidolite, the cement clinker, the lime stone and the fluorite are added according to the range of the proportion, and the carbon material is added and uniformly mixed, or after the carbon material is uniformly mixed, mixed powder or granular casting protecting slag is regranulated.
Description
Technical field: the present invention relates to a kind of casting covering slag, particularly a kind of is the continuous casting covering slag of main material with the lepidolite.
Background technology:
Continuous casting covering slag is that continuous casting is produced one of most important auxiliary material, and continuous casting covering slag joins on the crystallizer molten steel surface can play insulation effect; Slag can also make the molten steel secluding air avoid molten steel oxidation; Slag flows into and forms slag film lubricate between crystallizer and the strand; Thereby influence strand initial solidification process by the performance that changes covering slag; The field trash that floats in slag absorption and the dissolving molten steel etc.Existing covering slag is usually by containing CaO, SiO
2, Al
2The raw mineral materials of oxides such as O3 is formed, and adds fusing point, the viscosity that the flux that contains elements such as Na, F is adjusted covering slag again.If the fever type covering slag also will be allocated exothermic material and combustion adjuvant into is oxygenate.Continuous casting covering slag all will be allocated the carbon material of some into and control the burn-off rate of covering slag on crystallizer molten steel face, and other technological parameters of itself and continuous casting are complementary.
Can be divided into mixed type and pre-melted type two big classes according to manufacturing process classification continuous casting covering slag, mixed type is that various powdery starting materials are formed by the abundant mixing of certain proportioning, or makes graininess again.Pre-melted type is that the raw material beyond the carbon material are fused into slag charge in advance by certain proportioning, adds carbon material then and makes Powdered or various graininess covering slag.
CaO, SiO in the common covering slag
2Account for 55-80%, CaO/SiO
2Between 0.5-1.5, Al
2O
3Account for 2-15%.The raw material that contain CaO have clinker, blast furnace granulated slag, wollastonite, lime stone or the like.Contain SiO
2Material feldspar, wollastonite, perlite, diatomite etc. are arranged.Contain the Na raw material sodium carbonate, sodium fluoride, nepheline, glass dust, prodan etc. are arranged.The raw material that contains F has sodium fluoride, ice crystal, prodan etc.Na
2O+F accounts for the 5-20% of covering slag total amount.Oxide as flux also has BaO, MnO, B
2O
3Deng, but the former is the most frequently used.
The producer of covering slag calculates the prescription of covering slag usually according to predetermined chemical composition.The mineral raw material often contain CaO, SiO simultaneously
2, Al
2O
3Deng composition, contain Na, F element when having, therefore all adopt raw mineral materials difficult technically.Therefore conduct reduces the Na of the flux of fusing point, viscosity
2O is from the chemical products alkaline earth metal carbonate, and F comes from NaF etc.Because the CaO/SiO of wollastonite is near 1, so wollastonite is CaO, SiO
2Main source Deng oxide.And then adding contains high CaO or high SiO on a small quantity
2Raw material adjust CaO/SiO.Contain Al
2O
3Mineral a lot, and the Al in the covering slag
2O
3Content is not high yet, therefore contains Al
2O
3Mineral are not main materials.Even raw-material like this prescription is still very complicated, add carbon material, raw-material kind has about 10 kinds.
Soda ash Na
2CO
3Be widely used as the flux that reduces fusing point, reducing the effective substances of viscosity is fluorine-containing thing, and fluorite is the most frequently used mineral.Flux is one of most important additive of covering slag, and it directly influences the domestic animal energy of slag, so the selection of flux is the key of covering slag technology.Existing covering slag; as the patent No. be ZL92106323.7 be the pouring in steel smelting covering slag of base-material with the wollastonite; Chinese patent application number is 94111971.8 composition bentonite protection slag, and Chinese patent application number is that ingot protection slag for red mud steel smelting of 93111310.5 etc. has all added soda ash as flux.
Summary of the invention:
The technical issues that need to address of the present invention are to simplify the prescription of continuous casting covering slag, the cost of reduction covering slag, raising slab surface quality.
Technical scheme of the present invention is: a kind of continuous casting covering slag, comprise lepidolite, clinker, lime stone, and the weight part ratio of its each component is: the ratio of lepidolite and clinker is 1: 0.4～0.8, the ratio of lepidolite and lime stone is 1: 0.2～0.4; For the viscosity of regulating slag can add a spot of fluorite, the ratio of lepidolite and fluorite is 1: 0～0.3.
Of the present invention is that the technological process of production of the covering slag in main slag charge source is with lepidolite: by the ratio of definite lepidolite and clinker, lime stone, fluorite of calculating in advance with the abundant mixing of required raw-material powder; again through making become the semi-finished product slag charge after ball, premelt, shrend, the pulverizing and add carbon material mixing or mixing again after granulation become the Powdered or granular finished product covering slag of pre-melted type, or with Powdered slag charge raw materials such as lepidolite behind carbon material mixing or mixing again granulation become the Powdered or graininess continuous casting covering slag of mixed type.Carbon material is carbon black and graphite, and the addition ratio of weight and number of semi-finished product slag charge and carbon material is 1: 0.1～0.2.
Beneficial effect of the present invention is: the present invention for a kind of be the covering slag of main material with the lepidolite, the addition of lepidolite can account for the 30-70% of slag charge total amount in the covering slag and since lepidolite in contain K
2O, F, particularly it contains certain Li
2O, the present invention but do not need to add in addition fluxs such as alkaline earth metal carbonate and sodium fluoride, ice crystal, do not add or only add a spot of fluorite to get final product, and add carbon material again and are square billet, garden base covering slag.It also contains SiO
2, Al
2O
3Deng the active ingredient of covering slag, cheap like this lepidolite just can become the main material of covering slag.Because lepidolite contains a certain amount of Al
2O
3, so higher relatively large and small square billet of its suitable preparation viscosity, garden base covering slag, and, not only reduced the cost of covering slag, and the Li that brings into of lepidolite owing to having allocated lepidolite into
2O has optimized the performance of covering slag, has improved slab surface quality.
Lepidolite is a kind of cheap mine tailing, and its composition of wanting is SiO
2, Al2O
3, K
2O, Li
2O, F etc.These all are the active ingredient of covering slag, and chemical composition stability.Li in the covering slag
2O is strong flux, can reduce the fusing point and the viscosity of covering slag effectively, Li
2O can also play the effect that suppresses the crystallization of covering slag process of setting, uses Li
2O replaces Na
2O can also strengthen the slag dissolving and come from Al2O in the molten steel
3Ability and speed, stablize Slag Properties.Certainly obtain Li by in covering slag, adding lithium carbonate
2O's.But lithium carbonate is expensive chemical products, if the Li in the slag
2O reaches 2%, then will add 4.8% lithium carbonate.The cost of lithium carbonate will be above the summation of the cost of other raw materials.Therefore in common square, garden base covering slag, do not add lithium carbonate.Use square, the garden base covering slag of lepidolite, owing to contain Li
2O just might obtain the good strand of surface quality, and this covering slag also is more suitable for improving the pulling rate of strand simultaneously.
The lepidolite that embodiment uses among the present invention contains the SiO of 70-80%
2,, be acid material, in order to adjust the CaO/SiO of covering slag
2, also added clinker and lime stone.Clinker is the comparatively stable raw material of a kind of chemical composition, the CaO/SiO of itself
2About 3, be basic matterial.Agstone replenishes as CaO insufficient section in the covering slag.Al2O
3Mainly from lepidolite.Covering slag of the present invention is except adding above-mentioned several raw material as the stock, and for the viscosity of regulating slag need add a spot of fluorite, lepidolite itself is a kind of low melting point, the K that it contains sometimes
2O, F, Na
2Therefore O etc. have fluxing action, with the lepidolite are not add or add a spot of fluorite in the covering slag of base-material just can make fusing point, the viscosity of covering slag reach certain requirement.Covering slag is when fusing among the present invention, and the lime stone in the slag will resolve into CaO and CO
2, CaO will become the part of slag.Because the decomposition of lime stone is the endothermic reaction, emits gas again tempestuously, so lime stone will be controlled at suitable scope to its addition during as the pre-melted slag base-material.
The specific embodiment:
In the table one prescription, chemical composition, the performance of three kinds of covering slags preparing of the present invention and original covering slag, the comparison of result of use.So-called prescription is meant the prescription of basic slag charge, and with granulation behind these powder slag charge mixings, fusing then, shrend, oven dry, abrasive dust add carbon material by the proportioning in the table again, and the finished product that is covering slag is dried in granulation behind the mixing again.Chemical composition in the table refers to the chemical composition of covering slag finished product, and performance also is meant the result of finished product test.
The result of use of covering slag is estimated two parts usually, and the one, the fusing situation in crystallizer, promptly burn-off rate is normal, and not slagging scorification circle has certain melting layer thickness.The 2nd, slab surface quality will be closed the lobe situation of hollow strand, and whether defectives such as slagging scorification, pit, pin hole are arranged.Use is the result show, covering slag of the present invention has good actual achievement.See Table one with table two.
Table one covering slag prescription of the present invention reaches the comparison of using the result with original covering slag
| The pre-melted slag formula for raw stock | The raw material title | Embodiment | Comparative example | |||
| A | B | C | D | E | ||
| Lepidolite | 55 | 50 | 45 | |||
| Clinker | 30 | 30 | 30 | 19 | ||
| Lime stone | 15 | 15 | 15 | |||
| Fluorite | 5 | 10 | 17 | 17 | ||
| Soda ash | 8 | 8 | ||||
| The aluminium vanadine | 12 | 11 | ||||
| Wollastonite | 56 | |||||
| Magnesia | 2 | 2 | ||||
| Flue dust | 6 | |||||
| High SiO 2Wollastonite | 42 | |||||
| The finished product protection slag | Pre-melted slag | 85 | 86 | 85 | 84 | 86 |
| Carbon black | 2 | 2 | 1 | 1 | 2 | |
| Graphite | 13 | 12 | 14 | 15 | 12 | |
| Covering slag chemical composition (%) | CaO | 25 | 27 | 29 | 28 | 31 |
| SiO 2 | 32 | 30 | 27 | 32 | 30 | |
| Al 2O 3 | 13 | 12 | 11 | 10 | 10 | |
| Na 2O | 3.9 | 4 | ||||
| F | 2.8 | 4.4 | 5.9 | 6.0 | 6.2 | |
| K 2O | 4.0 | 3.7 | 3.3 | |||
| Li 2O | 2.4 | 2.2 | 1.9 | |||
| MgO | 1.5 | 1.5 | ||||
| Tc | 16 | 15 | 16 | 17 | 15 | |
| CaO/SiO 2 | 0.78 | 0.9 | 1.1 | 0.88 | 1.0 | |
| The physical property of covering slag | Fusion temperature, ℃ | 1168 | 1185 | 1169 | 1220 | 1230 |
| (1300 ℃ of viscosity | 0.85 | 0.54 | 0.30 | 0.47 | 0.45 | |
| The covering slag result of use | Meltdown property | ○ | ○ | ○ | ○ | ○ |
| Lobe | ○ | ○ | ○ | ○ | △ | |
| Slagging scorification | ○ | ○ | △ | △ | △ | |
| Pit | △ | ○ | ○ | △ | △ | |
Annotate: meltdown property refers to the fusing situation of covering slag in crystallizer, divides, in, poor, respectively with zero, △, * represent.Lobe, slagging scorification, pit are few more, and cc billet surface quality is good more.Surface quality also with good, in, difference expression, symbol is the same.
The composition of raw material of table two embodiment and comparative example (%)
| Composition | Lepidolite | Clinker | Wollastonite | Lime stone | Fluorite | Flue dust | Soda ash | The aluminium vanadine | Magnesia | High silicon wollastonite |
| CaO | 65 | 47 | 55 | 62 | 4.3 | 1.9 | 24 | |||
| SiO 2 | 54 | 20 | 50 | 10 | 49 | 16 | 5.8 | 72 | ||
| Al 2O 3 | 25 | 5.4 | 25 | 74 | 2.3 | |||||
| Na 2O | ||||||||||
| F | 6 | 42 | ||||||||
| K 2O | 8.6 | |||||||||
| Li 2O | 5 | |||||||||
| Na 2O | 58 | |||||||||
| MgO | 88 |
Claims (3)
1, a kind of continuous casting covering slag comprises lepidolite, clinker, lime stone, and the weight part ratio of its each component is: the ratio of lepidolite and clinker is 1: 0.4～0.8, and the ratio of lepidolite and lime stone is 1: 0.2～0.4, and the lepidolite composition comprises SiO
2, Al
2O
3, K
2O, Li
2O, F, wherein SiO
2Account for total amount 70～80%, the clinker composition comprises CaO, SiO
2, Al
2O
3, wherein CaO and SiO
2Ratio be 3～3.25.
2, a kind of continuous casting covering slag according to claim 1 is characterized in that, component also comprises fluorite, and the ratio of lepidolite and fluorite is 1: 0～0.3.
3, a kind of continuous casting covering slag according to claim 1 and 2 is characterized in that, component also comprises carbon material, and lepidolite, clinker, lime stone, fluorite total amount and carbon material weight part ratio are: 1: 0.1～0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100174809A CN1298459C (en) | 2004-04-05 | 2004-04-05 | Protective slag for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100174809A CN1298459C (en) | 2004-04-05 | 2004-04-05 | Protective slag for continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1680056A CN1680056A (en) | 2005-10-12 |
| CN1298459C true CN1298459C (en) | 2007-02-07 |
Family
ID=35067021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100174809A Expired - Lifetime CN1298459C (en) | 2004-04-05 | 2004-04-05 | Protective slag for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1298459C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148619B (en) * | 2014-08-07 | 2016-05-11 | 武汉理工大学 | A kind of glass grog that makes an addition to peritectic steel covering slag and preparation thereof, application process |
| CN109702158B (en) * | 2019-01-21 | 2020-12-29 | 湖南工业大学 | Casting powder for high-aluminum steel continuous casting and preparation method and application thereof |
| CN115229139B (en) * | 2022-06-15 | 2024-02-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Heavy rail steel continuous casting tundish covering agent and adding method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411931A (en) * | 2001-10-16 | 2003-04-23 | 广州珠江钢铁有限责任公司 | Protective slag for CSP thin plate blank continuously-casting crystallizer |
| RU2214888C2 (en) * | 2001-12-25 | 2003-10-27 | Открытое акционерное общество "Новолипецкий металлургический комбинат" | Slag forming mixture |
| RU2214887C2 (en) * | 2001-12-25 | 2003-10-27 | Открытое акционерное общество "Новолипецкий металлургический комбинат" | Slag forming mixture |
| CN1481954A (en) * | 2003-04-30 | 2004-03-17 | 重庆大学 | Fluorine-free environment-friendly type continuous casting protecting slag for the blast furnace slag containing titanium and the manufacturing process of the same |
| CN1485168A (en) * | 2002-09-29 | 2004-03-31 | 宝山钢铁股份有限公司 | Protective slag for continuous super low carbon steel casting |
-
2004
- 2004-04-05 CN CNB2004100174809A patent/CN1298459C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411931A (en) * | 2001-10-16 | 2003-04-23 | 广州珠江钢铁有限责任公司 | Protective slag for CSP thin plate blank continuously-casting crystallizer |
| RU2214888C2 (en) * | 2001-12-25 | 2003-10-27 | Открытое акционерное общество "Новолипецкий металлургический комбинат" | Slag forming mixture |
| RU2214887C2 (en) * | 2001-12-25 | 2003-10-27 | Открытое акционерное общество "Новолипецкий металлургический комбинат" | Slag forming mixture |
| CN1485168A (en) * | 2002-09-29 | 2004-03-31 | 宝山钢铁股份有限公司 | Protective slag for continuous super low carbon steel casting |
| CN1481954A (en) * | 2003-04-30 | 2004-03-17 | 重庆大学 | Fluorine-free environment-friendly type continuous casting protecting slag for the blast furnace slag containing titanium and the manufacturing process of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1680056A (en) | 2005-10-12 |
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