CN107297475A - A kind of high alumina steel continuous casting crystallizer Mold Powder Without Fluorine - Google Patents
A kind of high alumina steel continuous casting crystallizer Mold Powder Without Fluorine Download PDFInfo
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- CN107297475A CN107297475A CN201710518289.XA CN201710518289A CN107297475A CN 107297475 A CN107297475 A CN 107297475A CN 201710518289 A CN201710518289 A CN 201710518289A CN 107297475 A CN107297475 A CN 107297475A
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- sio
- fluorine
- mold powder
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- aluminum steel
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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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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention relates to a kind of high alumina steel continuous casting crystallizer Mold Powder Without Fluorine；The covering slag is made up of the oxide component of following mass percentage content：CaO 30%~45%, SiO210%~25%, Al2O320%~35%, MgO 2%~10%, B2O34%~10%, (Na2O+Li2O) 8%~15%, 1.1≤CaO/ (SiO2+Al2O3)≤1.3,3.5≤CaO/B2O3≤ 7,1≤SiO2/B2O3≤1.7.Such covering slag slag steel extent of reaction is relatively low, and crystal property is good, and Crystalline Phase is mainly calcium borosilicate.The SiO that the calcium borosilicate of formation can be fixed in covering slag melt2, therefore from its reaction with Al elements in steel is weakened in kinetics, greatly improve covering slag stability；And calcium borosilicate crystal can efficiently control the heat-transfer effect of covering slag.
Description
Technical field
The invention belongs to smelting iron and steel continuous-casting art, it is related to a kind of good high-aluminum steel Mold Powder Without Fluorine of physicochemical property.
Background technology
There is continuous crystallizer protecting slag anti-oxidation, absorption to be mingled with, lubricate green shell and Heat Transfer Control in casting process
Etc. numerous critical functions, wherein mostly important with heat transmission function to lubricate, it is to improving cc billet surface quality and ensureing continuous casting
It is smoothed out playing an important role.Al in the casting process of high-aluminum steel, molten steel can enter in two different ways to be protected
Protect in slag, a kind of is to be rapidly absorbed into the form of nonmetallic oxide inclusion in covering slag, and oxygen is preferentially combined with Al, generation gold
Category oxide is mingled with；It is another be by with SiO in covering slag2React (4 [Al]+3 (SiO2(the Al of)=22O3)+3[Si])
Into in covering slag, SiO in covering slag2Consumption will cause the basicity (CaO/SiO of covering slag2) drastically raise, Al2O3Content
Dramatically increase so that the penalty such as viscosity, fusing, crystallization and heat transfer of covering slag, so as to cause heat transfer unstable and moisten
Cunning is insufficient, finally causes steel billet the serious surface defect such as crack and depression occur.
In addition, generally, except CaO, SiO in the component of continuous crystallizer protecting slag2、Al2O3Outside base-material, also need to add
Enter CaF2、Li2O、Na2The fluxing agents such as O.Wherein, fluorine can significantly decrease the viscosity, fusion temperature and setting temperature of covering slag, have
Effect ground promotes the heat transfer property of Solidified Flux Film crystallization control covering slag；And it is fluoride aboundresources, cheap.Therefore, turn into
The conventional material of continuous crystallizer protecting slag.However, fluorine-containing covering slag can cause to ask in terms of three below in casting process
Topic：1) fluorine can react and generate harmful fluoride (HF, the SiF of low melting point in covering slag fusion process4, NaF etc.), and cause
The corrosion of equipment and the healthy infringement of workman；2) in cyclic process with and Cold Water Exposure, fluorine, which can be discharged into water, to be caused
Water sample causes the pollution of water body and the corrosion of equipment in acidity；3) in the waste residue stacking process after use, fluorine can be also discharged into
The pollution of soil and groundwater is caused in soil.
Development and the 13 comprehensive unlatchings built with Chinese national economy, steel industry face product structure tune
Whole test, AHSS (AHSS) such as TRIP, TWIP steel because of light weight the features such as better than orthodox car steel performance and
As study hotspot in recent years；On the other hand going from bad to worse due to environment, environmental pollution is brought to Ferrous Metallurgy process
The concern of problem is also increasingly paid attention to.Therefore, the research of continuous crystallizer protecting slag fluoride-free is very necessary and urgent.And
The matter of utmost importance of high-aluminum steel continuous crystallizer protecting slag fluoride-free reduces the progress of slag steel reaction, while ensureing the physics and chemistry of covering slag
Performance can meet actual continuous casting.
The content of the invention
Present invention aims at providing, a kind of physicochemical property is good and slag steel reacts less high-aluminum steel Mold Powder Without Fluorine, allows
Covering slag slag steel after fluoride-free reacts less and lubricant effect and crystal property etc. all in normal range (NR), to ensure to solidification
During effective control for conducting heat.
To achieve the above object, the technical scheme is that：
A kind of high-aluminum steel Mold Powder Without Fluorine of the present invention, is made up of the oxide of following weight/mass percentage composition：
CaO 30%~45%, preferably 39.5~44.5%；
SiO210%~25%, preferably 10~12%；More preferably 10%；
Al2O320%~35%, preferably 22~28.5%；
MgO 2%~10%,
B2O34%~10%, preferably 6~10%；
(Na2O+Li2O) 8%~15%,
CaO and B2O3Mass ratio be 3.5~7:1；
SiO2With B2O3Mass ratio be 1~1.7:1.
Preferably, CaO and B2O3Mass ratio be 3.95~7:1.
Preferably, SiO2With B2O3Mass ratio be 1~1.25:1.
A kind of high-aluminum steel Mold Powder Without Fluorine of the present invention, by strictly controlling SiO2/B2O3And SiO2/B2O3Ratio promotes borosilicate
The formation of sour calcium crystal, the formation of calcium borosilicate has beneficial to the SiO in fixed covering slag melt2, so that in kinetics
Weaken its reaction with Al elements in steel, greatly improve covering slag stability.
Contain calcium borosilicate crystal in a kind of high-aluminum steel Mold Powder Without Fluorine of the present invention, crystalline phase, and the calcium borosilicate is brilliant
The percent crystallization in massecuite of body is 70%~95%
A kind of high-aluminum steel Mold Powder Without Fluorine of the present invention, the molten temperature region of the high-aluminum steel Mold Powder Without Fluorine is 1050 DEG C
Between~1160 DEG C.
At a kind of high-aluminum steel Mold Powder Without Fluorine of the present invention, 1300 DEG C of the high-aluminum steel Mold Powder Without Fluorine viscosity be 0.07~
0.16Pa·s.Covering slag has good mobility and lubricity.
A kind of high-aluminum steel Mold Powder Without Fluorine of the present invention, the crystallization temperature of the high-aluminum steel Mold Powder Without Fluorine for 1260 DEG C~
1310 DEG C, the crystallization incubation time is 15s~28s.
A kind of high-aluminum steel Mold Powder Without Fluorine of the present invention, the mean heat flux of the high-aluminum steel Mold Powder Without Fluorine for 0.58~
0.75MW/m2。
A kind of high-aluminum steel Mold Powder Without Fluorine of the present invention, Li2O weight/mass percentage composition is no more than 3%.
Preferably, CaO/ (SiO in the medium carbon steel Mold Powder Without Fluorine2+Al2O3) it is 1.10~1.30.
Preferably, a kind of high-aluminum steel Mold Powder Without Fluorine of the invention, by the oxide group of following weight/mass percentage composition
Into：CaO 41.90%, SiO210%, Al2O328.10%, MgO 2%, Na2O 10%, Li2O 2%, B2O36%.
Preferably, a kind of high-aluminum steel Mold Powder Without Fluorine of the invention, by the oxide group of following weight/mass percentage composition
Into：CaO 40.86%, SiO210%, Al2O327.14%, MgO 2%, Na2O 10%, Li2O 2%, B2O38%.
Preferably, a kind of high-aluminum steel Mold Powder Without Fluorine of the invention, by the oxide group of following weight/mass percentage composition
Into：CaO 39.81%, SiO210%, Al2O326.19%, MgO 2%, Na2O 10%, Li2O 2%, B2O310%.
Preferably, a kind of high-aluminum steel Mold Powder Without Fluorine of the invention, by the oxide group of following weight/mass percentage composition
Into：CaO 42.55%, SiO210%, Al2O325.45%, MgO 2%, Na2O 10%, Li2O 2%, B2O38%.
Preferably, a kind of high-aluminum steel Mold Powder Without Fluorine of the invention, by the oxide group of following weight/mass percentage composition
Into：CaO 44.09%, SiO210%, Al2O323.91%, MgO 2%, Na2O 10%, Li2O 2%, B2O38%.
High alumina steel continuous casting crystallizer Mold Powder Without Fluorine involved in the present invention, its preparation method is as follows, by above-mentioned protection
According to target composition is weighed slag raw material, carries out mechanical agitation so that each composition is uniformly mixed, and then will be mixed using intermediate frequency furnace
Sample removes the solid solution that complexity is formed between volatile matter and gaseous matter, each component, by molten state in 1500 DEG C of heating fusings afterwards
Slag is poured into water chilling and obtains glassy state covering slag block, and covering slag block is carried out to obtain required guarantor after Mechanical Crushing is milled
Protect ground-slag body.
Principle and advantage
The covering slag of the present invention is by controlling CaO/B2O3、SiO2/B2O3Mass ratio, 3.5≤CaO/B2O3≤ 7 and 1≤
SiO2/B2O3≤ 1.7 (especially 1≤SiO2/B2O3≤ 1.25), under the synergy of other appropriate amount of components, borosilicate can be promoted
The formation of sour calcium crystal, the SiO that the formation of calcium borosilicate can be fixed in melt protecting slag2, reduce its with steel Al it is anti-
Should, so as to stabilize the physicochemical property of covering slag；The pollution problem of fluorine is avoided simultaneously.
The protection slag melting point developed of the present invention is low, component collocation is reasonable, it is to avoid the precipitation of the high melting crystals such as nepheline
And then reduce the appearance of the glass properties situation of slag film.
In addition, the viscosity of the invention for developing high-aluminum steel Mold Powder Without Fluorine is appropriate, and this not only contributes to raising slag and existed
Lubricant effect when using；The SiO that formed calcium borosilicate crystal is fixed in melt protecting slag is also beneficial to simultaneously2, and then
Reduce SiO in covering slag melt2With the reaction of [Al] in molten steel, it is controlled the reaction of slag steel, so as to solve high-aluminum steel
The problem of serious slag steel reacts in casting process.
Compared with prior art, the present invention has the advantage that：
1st, Mold Powder Without Fluorine of the invention, it is adaptable to high-aluminum steel casting powder for continuously casting crystallizer, its every physicochemical property and
Parameter, such as fusing point, viscosity, crystallization temperature and heat flow density are close with traditional fluorine-containing covering slag.
2nd, Mold Powder Without Fluorine of the invention, completely solves the fluoride pollution problem in casting process, while the covering slag
Using the processing cost and the corrosion rate of casting machine that can substantially reduce continuous casting cooling water, it can significantly improve the place of recirculated water
Manage pressure and cost.
3rd, Mold Powder Without Fluorine of the invention, Crystalline Phase is mainly calcium borosilicate (Ca11Si4B2O22).The Crystalline Phase
Generation is conducive to fixing the SiO in covering slag2, SiO2The slag steel significant reaction of participation is reduced.The slag solves high-aluminum steel continuous casting mistake
The problem of Cheng Yanchong slag steel reacts；And stabilization is controlled to heat transfer, and greasy property and meltdown property are showed well.
Embodiment：
The invention will be further elaborated with reference to embodiments, and embodiment is merely to illustrate the present invention, rather than with
Any form limits the present invention.
Embodiment 1
Dispensing：Ternary basicity CaO/ (SiO2+Al2O3) it is 1.10, CaO 41.90wt.%, SiO210wt.%, Al2O3
28.10wt.%, MgO 2wt.%, Na2O 10wt.%, Li2O 2wt.%, B2O36wt.%.
Preparation process：By above-mentioned covering slag raw material, according to target composition is weighed, and carries out mechanical agitation so that each composition is uniformly mixed
Close, sample heating fusing after then being mixed using intermediate frequency furnace is removed and forms multiple between volatile matter and gaseous matter, each component
Miscellaneous solid solution, is poured into water chilling by molten state slag and obtains glassy state covering slag block, and it is broken that covering slag block is carried out into machinery
It is broken mill after obtain required covering slag powder.
The main physical index of covering slag is shown in Table 1.
Embodiment 2
Dispensing：Ternary basicity CaO/ (SiO2+Al2O3) it is 1.10, CaO 40.86wt.%, SiO210wt.%, Al2O3
27.14wt.%, MgO 2wt.%, Na2O 10wt.%, Li2O 2wt.%, B2O38wt.%.
Preparation process：Be the same as Example 1.
The main physical index of covering slag is shown in Table 1.
Embodiment 3
Dispensing：Ternary basicity CaO/ (SiO2+Al2O3) it is 1.10, CaO 39.81wt.%, SiO210wt.%, Al2O3
26.19wt.%, MgO 2wt.%, Na2O 10wt.%, Li2O 2wt.%, B2O310wt.%.
Preparation process：Be the same as Example 1.
The main physical index of covering slag is shown in Table 1.
Embodiment 4
Dispensing：Ternary basicity CaO/ (SiO2+Al2O3) it is 1.20, CaO 42.55wt.%, SiO210wt.%, Al2O3
25.45wt.%, MgO 2wt.%, Na2O 10wt.%, Li2O 2wt.%, B2O38wt.%.
Preparation process：Be the same as Example 1.
The main physical index of covering slag is shown in Table 1.
Embodiment 5
Dispensing：Ternary basicity CaO/ (SiO2+Al2O3) it is 1.30, CaO 44.09wt.%, SiO210wt.%, Al2O3
23.91wt.%, MgO 2wt.%, Na2O 10wt.%, Li2O 2wt.%, B2O38wt.%.
Preparation process：Be the same as Example 1.
The main physical index of covering slag is shown in Table 1.
Comparative example 1
Dispensing：Ternary basicity CaO/ (SiO2+Al2O3) it is 1.25, CaO 43.33wt.%, SiO229.67wt.%,
Al2O35wt.%, MgO 2wt.%, Na2O 10wt.%, Li2O 2wt.%, B2O38wt.%.
Preparation process：Be the same as Example 1.
The main physical index of covering slag is shown in Table 1.
Comparative example 2
Dispensing：Ternary basicity CaO/ (SiO2+Al2O3) it is 1.25, CaO 46.67wt.%, SiO232.33wt.%,
Al2O35wt.%, MgO3wt.%, Na2O 10wt.%, Li2O 2wt.%, B2O33wt.%.
Preparation process：Be the same as Example 1.
The main physical index of covering slag is shown in Table 1.
Comparative example 3
Ternary basicity CaO/ (SiO2+Al2O3) it is 1.19, CaO 41.90wt.%, SiO27wt.%, Al2O3
28.10wt.%, MgO7.5wt.%., Na2O 10wt.%, Li2O 2wt.%, B2O33.5wt.%,
Preparation process：Be the same as Example 1.
The main physical index of covering slag is shown in Table 1.
The main physical index of the covering slag of table 1.
The high-aluminum steel Mold Powder Without Fluorine of the present invention is a kind of high alumina boracic covering slag, its every performance and parameter, such as
The performances such as fusing point, viscosity, crystallization temperature and heat flow density and parameter, can meet the demand of actual casting process technological parameter.
From the point of view of the experimental result of embodiment and comparative example 1,2, the indices of embodiment are superior to comparative example；More importantly slag steel
Significant reaction is weaker than comparative example, and embodiment is suitable with the slag-metal reaction degree of comparative example 3, but percent crystallization in massecuite is greatly improved, heat flow density
Significantly reduce, be conducive to the control to steel billet solidified structure in casting process.Meanwhile, preferred scheme (such as embodiment 3) of the present invention
After implementation, its gained performance also much due to the present invention other products (such as melting region is narrow, percent crystallization in massecuite superelevation, the incubation time
Short, mean heat flux is low), this point is well beyond estimated before experiment.Therefore not only to avoid high-aluminum steel tight by the present invention
The problems such as slag steel of weight reacts, also solves the problem of crystal property and greasy property deteriorate after covering slag fluoride-free.The present invention
Covering slag is particularly suitable for use in high-aluminum steel casting process slag.
Claims (10)
1. a kind of high-aluminum steel Mold Powder Without Fluorine, it is characterised in that；It is made up of the oxide of following weight/mass percentage composition：
CaO 30%~45%；
SiO210%~25%；
Al2O320%~35%；
MgO 2%~10%,
B2O34%~10%；
(Na2O+Li2O) 8%~15%,
CaO and B2O3Mass ratio be 3.5~7:1；
SiO2With B2O3Mass ratio be 1~1.7:1；
CaO/ (SiO in the medium carbon steel Mold Powder Without Fluorine2+Al2O3) it is 1.10~1.30.
2. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 1, it is characterised in that；By following weight/mass percentage composition
Oxide is constituted：
CaO and B2O3Mass ratio be 3.5~7:1；
SiO2With B2O3Mass ratio be 1~1.7:1.
3. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 2, it is characterised in that；By following weight/mass percentage composition
Oxide is constituted：
CaO and B2O3Mass ratio be 3.5~7:1；
SiO2With B2O3Mass ratio be 1~1.7:1.
4. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 2, it is characterised in that；
CaO and B2O3Mass ratio be 3.95~7:1；
SiO2With B2O3Mass ratio be 1~1.25:1.
5. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 1, it is characterised in that；
Contain calcium borosilicate crystal in the high-aluminum steel Mold Powder Without Fluorine, and the calcium borosilicate crystal percent crystallization in massecuite for 70%~
95%.
6. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 1, it is characterised in that；The high-aluminum steel Mold Powder Without Fluorine
Molten temperature region be 1050 DEG C~1160 DEG C between.
7. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 1, it is characterised in that；The high-aluminum steel Mold Powder Without Fluorine
Viscosity is 0.07~0.16Pas at 1300 DEG C.
8. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 1, it is characterised in that；The high-aluminum steel Mold Powder Without Fluorine
Crystallization temperature be 1260 DEG C~1310 DEG C, the crystallization incubation time be 15s~28s.
9. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 1, it is characterised in that；The high-aluminum steel Mold Powder Without Fluorine
Mean heat flux be 0.58~0.75MW/m2。
10. a kind of high-aluminum steel Mold Powder Without Fluorine according to claim 1, it is characterised in that；By following weight/mass percentage composition
Oxide composition：
CaO 41.90%, SiO210%, Al2O328.10%, MgO 2%, Na2O 10%, Li2O 2%, B2O36%；Or
CaO 40.86%, SiO210%, Al2O327.14%, MgO 2%, Na2O 10%, Li2O 2%, B2O38%；Or
CaO 39.81%, SiO210%, Al2O326.19%, MgO 2%, Na2O 10%, Li2O 2%, B2O310%；Or
CaO 42.55%, SiO210%, Al2O325.45%, MgO 2%, Na2O 10%, Li2O 2%, B2O38%；Or
CaO 44.09%, SiO210%, Al2O323.91%, MgO 2%, Na2O 10%, Li2O 2%, B2O38%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113751681A (en) * | 2021-09-14 | 2021-12-07 | 鞍钢股份有限公司 | Continuous casting mold flux suitable for high titanium steel |
| CN114054698A (en) * | 2021-11-10 | 2022-02-18 | 北京科技大学 | Fluoride-free environment-friendly continuous casting mold flux for ultrahigh aluminum steel |
| CN114130972A (en) * | 2021-11-15 | 2022-03-04 | 上海应用技术大学 | Fluoride-free high-aluminum steel continuous casting crystallizer non-reactive covering slag |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130070667A (en) * | 2011-12-15 | 2013-06-28 | 주식회사 포스코 | Continuous casting method of steel with high al content by using hybrid operation of liquid and solid mold flux |
| CN103722142A (en) * | 2013-12-06 | 2014-04-16 | 中南大学 | Low fluorine casting powder containing boron for medium carbon steel and preparation process |
| CN104209485A (en) * | 2014-08-11 | 2014-12-17 | 武汉钢铁(集团)公司 | Environment-friendly type continuous casting covering slag for high-aluminum peritectic steel |
| CN104607607A (en) * | 2014-12-31 | 2015-05-13 | 中南大学 | Fluoride-free mould flux for continuous casting of zirconium-containing medium-carbon steel |
| CN104858381A (en) * | 2015-05-25 | 2015-08-26 | 中南大学 | Novel aluminum steel continuous casting tundish covering agent and application thereof |
| CN104874755A (en) * | 2015-05-25 | 2015-09-02 | 中南大学 | Tundish covering agent used for chrome-bearing steel and application thereof |
| CN106041007A (en) * | 2016-08-10 | 2016-10-26 | 中南大学 | Medium manganese steel continuous casting tundish covering agent for improved automobile and application of medium manganese steel continuous casting tundish covering agent |
-
2017
- 2017-06-29 CN CN201710518289.XA patent/CN107297475B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130070667A (en) * | 2011-12-15 | 2013-06-28 | 주식회사 포스코 | Continuous casting method of steel with high al content by using hybrid operation of liquid and solid mold flux |
| CN103722142A (en) * | 2013-12-06 | 2014-04-16 | 中南大学 | Low fluorine casting powder containing boron for medium carbon steel and preparation process |
| CN104209485A (en) * | 2014-08-11 | 2014-12-17 | 武汉钢铁(集团)公司 | Environment-friendly type continuous casting covering slag for high-aluminum peritectic steel |
| CN104607607A (en) * | 2014-12-31 | 2015-05-13 | 中南大学 | Fluoride-free mould flux for continuous casting of zirconium-containing medium-carbon steel |
| CN104858381A (en) * | 2015-05-25 | 2015-08-26 | 中南大学 | Novel aluminum steel continuous casting tundish covering agent and application thereof |
| CN104874755A (en) * | 2015-05-25 | 2015-09-02 | 中南大学 | Tundish covering agent used for chrome-bearing steel and application thereof |
| CN106041007A (en) * | 2016-08-10 | 2016-10-26 | 中南大学 | Medium manganese steel continuous casting tundish covering agent for improved automobile and application of medium manganese steel continuous casting tundish covering agent |
Non-Patent Citations (1)
| Title |
|---|
| 于雄等: "B2O3对高铝钢连铸保护渣理化性能的影响", 《重庆大学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113751681A (en) * | 2021-09-14 | 2021-12-07 | 鞍钢股份有限公司 | Continuous casting mold flux suitable for high titanium steel |
| CN114054698A (en) * | 2021-11-10 | 2022-02-18 | 北京科技大学 | Fluoride-free environment-friendly continuous casting mold flux for ultrahigh aluminum steel |
| CN114130972A (en) * | 2021-11-15 | 2022-03-04 | 上海应用技术大学 | Fluoride-free high-aluminum steel continuous casting crystallizer non-reactive covering slag |
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| CN107297475B (en) | 2019-09-24 |
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