CN102078949A - Continuous casting mold powder for ferrite stainless steel and preparation method thereof - Google Patents
Continuous casting mold powder for ferrite stainless steel and preparation method thereof Download PDFInfo
- Publication number
- CN102078949A CN102078949A CN 201110030787 CN201110030787A CN102078949A CN 102078949 A CN102078949 A CN 102078949A CN 201110030787 CN201110030787 CN 201110030787 CN 201110030787 A CN201110030787 A CN 201110030787A CN 102078949 A CN102078949 A CN 102078949A
- Authority
- CN
- China
- Prior art keywords
- continuous casting
- stainless steel
- covering slag
- ferritic stainless
- slurry
- 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.)
- Pending
Links
Abstract
The invention discloses continuous casting mold powder for ferrite stainless steel and a preparation method thereof. The mold powder comprises the following components in percentage by weight: 20-40% CaO, 30-50% of SiO2, 35-10% of Al2O, 1-5% of MgO, 1-15% of Na2O, 1-10% of CaF2, 1-5% of Li2O and 2-8% of C, wherein the particle size is 0.5-1.5 millimeters. The preparation method comprises the following steps: (1) crushing and uniformly mixing carbon material, wollastonite, waste ash, limestone, soda ash and cryolite, and adding lithium hydroxide into the mixture to obtain a lithium-doped material; (2) adding water and stirring to obtain slurry; and (3) drying the slurry and preparing powdery continuous casting mold powder for ferrite stainless steel; or making the slurry into particles by a spraying granulation method, and roasting to obtain the continuous casting mold powder for ferrite stainless steel. According to the invention, the viscosity, melting temperature, crystallization rate and dissolution and absorption rate of TiN of the continuous casting mold powder meet the requirements of continuous casting; and the continuous casting mold powder has the characteristics of low preparation cost, simple process and the like and has a good application prospect.
Description
Technical field
The present invention relates to continuous casting covering slag and preparation method, particularly a kind of ferritic stainless steel continuous casting covering slag and preparation method thereof.
Background technology
In the annual stainless steel of producing in the whole world, nickeliferous austenitic stainless steel is with the leading position of its good performance in occupation of market, but, improve the production of ferritic stainless steel and the new approaches that usage ratio becomes the industry survival and development along with sharp rising of the in short supply of nickel resources and nickel valency.
Along with further investigation and the exploitation of people to ferritic stainless steel, its production and application technology are updated and are perfect, have overcome the deficiency on some performances of past, are greatly improved on the quality, and range of application also constantly enlarges.Ferritic stainless steel has very big development prospect in China, but because Iron and Steel Enterprises in China lacks the stainless mature experience of production high-performance ferrite, has hindered the development of ferritic stainless steel, and a lot of high performance ferritic stainless steels are dependence on import still.
Ferritic stainless steel generally contains higher Ti and Cr, thereby make and in crystallizer, generate dystectic compound easily, up to the present, the ferritic stainless steel particularly ferritic stainless steel of titaniferous still can not be realized the continuous casting production of sequence casting mainly having three big technical barriers fully: the one, and crystallizer " knot fish " (referring to caking, crust or cold skin); The 2nd, the submersed nozzle dross causes the continuous casting difficulty; The 3rd, slab and plate surface quality problem.
China's stainless steel continuous casting covering slag is the most dependence on import of ferritic stainless steel continuous casting covering slag particularly, and this has hindered the development of China's stainless steel industry to a certain extent.Therefore, the production domesticization of realization ferritic stainless steel continuous casting covering slag is present urgent problem.
Summary of the invention
The invention provides a kind of ferritic stainless steel continuous casting covering slag and preparation method thereof, purpose is by selecting suitable raw material for use, by rational preparation method, obtains the continuous casting covering slag that viscosity and fusion temperature meet the continuous casting production requirement.
Ferritic stainless steel of the present invention is CaO20 ~ 40% with the composition of continuous casting covering slag by weight percentage, SiO
230 ~ 50%, Al
2O
35 ~ 10%, MgO1 ~ 5%, Na
2O1 ~ 15%, CaF
21 ~ 10%, Li
2O1 ~ 5%, C2 ~ 8%; Granularity is 0.5 ~ 1.5mm.
Above-mentioned ferritic stainless steel is 0.4 ~ 1.3 with the basicity of continuous casting covering slag.
Above-mentioned ferritic stainless steel is 1030 ~ 1180 ℃ with the fusion temperature of continuous casting covering slag.
Above-mentioned ferritic stainless steel with continuous casting covering slag cooldown rate during greater than 0.1 ℃/s the crystallization rate be 0.
Above-mentioned ferritic stainless steel is 10.0 ~ 15.0 * 10 with continuous casting covering slag dissolving absorption rate to TiN 1350 ℃ the time
-4Kgm
-2S
-1
Above-mentioned ferritic stainless steel is 0.30 ~ 0.50 Pas with continuous casting covering slag k value 1300 ℃ the time.
Ferritic stainless steel of the present invention carries out according to the following steps with the preparation method of continuous casting covering slag:
1, carbonaceous material, wollastonite, power plant's ash, lime stone, soda ash and cryolite powder are broken to 0.1 ~ 1mm and mix, mixed proportion is carbonaceous material 2 ~ 8% by weight percentage, wollastonite 29 ~ 60%, power plant's ash 20 ~ 30%, lime stone 2 ~ 15%, soda ash 10 ~ 20%, ice crystal 5 ~ 15% is made mixed material, adds lithium hydroxide then, the addition of lithium hydroxide accounts for 2.5 ~ 4.5% of mixed material, obtains the lithium doping material; Described carbonaceous material is carbon black, graphite or activated carbon;
2, add entry in the lithium doping material and stir into slurry, wherein water accounts for 15 ~ 45% of slurry gross weight;
3, slurry is dry under 300 ~ 500 ℃ of conditions, be 1 ~ 2h drying time, makes powdery ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm; Perhaps slurry is adopted spray granulation to make the shot-like particle of 0.5 ~ 1.5mm, roasting under 500 ~ 900 ℃ of conditions then, roasting time 1 ~ 3h makes the ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm.
Crucial part of the present invention is that selected cost of material is low, and can carry out suitable adjustment to each raw material of covering slag according to the technological requirement of continuous casting production, to guarantee that covering slag can well be brought into play its metallurgical function in continuous casting production process.Continuous casting covering slag finished product of the present invention has the ability of good absorption titaniferous compound, and lower viscosity and fusion temperature, and crystal property is suitable.Have in the use fusing evenly, slag blanket Stability Analysis of Structures, slag consumption be suitable, can guarantee the continuous casting production of ferritic stainless steel effectively, slab quality reaches production requirement, can satisfy different casting, the requirement of technological parameters such as cross dimensions by the adjustment of raw material proportioning.
The viscosity of continuous casting covering slag of the present invention, fusion temperature, crystallization rate and the dissolving absorption rate of TiN met the continuous casting requirement, characteristics such as preparation cost is low, and technology is simple have a good application prospect.
Description of drawings
Fig. 1 is the lithia of continuous casting covering slag and the dissolving absorption rate graph of a relation of TiN.
The specific embodiment
Power plant's ash in the embodiment of the invention is general industry power plant ash, and its composition is SiO by weight percentage
234.30 ~ 65.76%, A1
2O
314.59 ~ 40.12%, Fe
2O
31.50 ~ 16.22 %, CaO 0.44 ~ 16.80%, and MgO 0.20 ~ 3.72%, SO
30.00 ~ 6.00 %, Na
2O0.10 ~ 4.23%, K
2O 0.02 ~ 2.14%, loss on ignition 0.63 ~ 29.97%;
The chemical composition of the ice crystal in the embodiment of the invention is Al by weight percentage
2O
313%, Na
2O32%, CaF
253%, surplus is an impurity;
The carbon black that adopts in the embodiment of the invention, graphite, activated carbon, wollastonite, lime stone, soda ash and lithium hydroxide are the general industry product;
The ferritic stainless steel for preparing in the embodiment of the invention is 1030 ~ 1180 ℃ with the fusion temperature of continuous casting covering slag, and k value is 0.30 ~ 0.50 Pas in the time of 1300 ℃, and the dissolving absorption rate to TiN in the time of 1350 ℃ is 10.0 ~ 15.0 * 10
-4Kgm
-2S
-1, cooldown rate during greater than 0.1 ℃/s the crystallization rate be 0.
Embodiment 1 is broken to 0.1～1mm with carbonaceous material, wollastonite, power plant's ash, lime stone, soda ash and cryolite powder and mixes, mixed proportion is carbonaceous material 2% by weight percentage, wollastonite 60%, power plant's ash 20%, lime stone 2%, soda ash 10%, ice crystal 6% is made mixed material, adds lithium hydroxide then, obtain the lithium doping material, the addition of lithium hydroxide accounts for 2.5% of mixed material; Described carbonaceous material is a carbon black; Add entry and stir into slurry in the lithium doping material, wherein water accounts for 15% of slurry gross weight; Slurry is dry under 500 ℃ of conditions, and be 1h drying time, makes powdery ferritic stainless steel continuous casting covering slag, and granularity is 0.5～1.5mm; Ferritic stainless steel is CaO20% with the chemical composition of continuous casting covering slag by weight percentage, SiO
250%, Al
2O
35%, MgO5%, Na
2O15%, CaF
22%, Li
2O1%, C2%; Basicity is 0.4; Adopt above-mentioned continuous casting covering slag to carry out stainless steel continuous casting production; compare with original continuous casting covering slag; casting process is smooth; the continuous casting difficulty does not take place; and the corrosion resistant plate surface quality of producing obviously improves; compare with the continuous casting covering slag that does not add lithia, in the time of 1350 ℃ to the dissolving absorption rate of TiN as shown in Figure 1.
Embodiment 2
Carbonaceous material, wollastonite, power plant's ash, lime stone, soda ash and cryolite powder are broken to 0.1 ~ 1mm and mix, mixed proportion is carbonaceous material 6% by weight percentage, wollastonite 29%, power plant's ash 25%, lime stone 15%, soda ash 20%, ice crystal 5% is made mixed material, adds lithium hydroxide then, obtain the lithium doping material, the addition of lithium hydroxide accounts for 3% of mixed material; Described carbonaceous material is a graphite;
Add entry and stir into slurry in the lithium doping material, wherein water accounts for 20% of slurry gross weight;
Slurry is dry under 400 ℃ of conditions, and be 2h drying time, makes powdery ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm;
Ferritic stainless steel is CaO30% with the chemical composition of continuous casting covering slag by weight percentage, SiO
245%, Al
2O
310%, MgO1%, Na
2O1%, CaF
210%, Li
2O5%, C8%; Basicity is 0.67;
Adopt above-mentioned continuous casting covering slag to carry out stainless steel continuous casting production, compare with original continuous casting covering slag, casting process is smooth, and the continuous casting difficulty does not take place, and the corrosion resistant plate surface quality of producing obviously improves.
Embodiment 3
Carbonaceous material, wollastonite, power plant's ash, lime stone, soda ash and cryolite powder are broken to 0.1 ~ 1mm and mix, mixed proportion is carbonaceous material 8% by weight percentage, wollastonite 33%, power plant's ash 30%, lime stone 4%, soda ash 15%, ice crystal 10% is made mixed material, adds lithium hydroxide then, obtain the lithium doping material, the addition of lithium hydroxide accounts for 3.5% of mixed material; Described carbonaceous material is an activated carbon;
Add entry and stir into slurry in the lithium doping material, wherein water accounts for 25% of slurry gross weight;
Slurry is dry under 400 ℃ of conditions, and be 1h drying time, makes powdery ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm;
Ferritic stainless steel is CaO40% with the chemical composition of continuous casting covering slag by weight percentage, SiO
230%, Al
2O
36%, MgO3%, Na
2O9%, CaF
24%, Li
2O2%, C6%; Basicity is 1.3;
Adopt above-mentioned continuous casting covering slag to carry out stainless steel continuous casting production, compare with original continuous casting covering slag, casting process is smooth, and the continuous casting difficulty does not take place, and the corrosion resistant plate surface quality of producing obviously improves.
Embodiment 4
Carbonaceous material, wollastonite, power plant's ash, lime stone, soda ash and cryolite powder are broken to 0.1 ~ 1mm and mix, mixed proportion is carbonaceous material 6% by weight percentage, wollastonite 50%, power plant's ash 21%, lime stone 3%, soda ash 12%, ice crystal 8% is made mixed material, adds lithium hydroxide then, obtain the lithium doping material, the addition of lithium hydroxide accounts for 4% of mixed material; Described carbonaceous material is a carbon black;
Add entry and stir into slurry in the lithium doping material, wherein water accounts for 30% of slurry gross weight;
Adopt spray granulation to make the shot-like particle of 0.5 ~ 1.5mm in slurry, roasting under 900 ℃ of conditions then, roasting time 1h makes the ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm;
Ferritic stainless steel is CaO25% with the chemical composition of continuous casting covering slag by weight percentage, SiO
246%, Al
2O
39%, MgO2%, Na
2O5%, CaF
26%, Li
2O3%, C4%; Basicity is 0.54;
Adopt above-mentioned continuous casting covering slag to carry out stainless steel continuous casting production, compare with original continuous casting covering slag, casting process is smooth, and the continuous casting difficulty does not take place, and the corrosion resistant plate surface quality of producing obviously improves.
Embodiment 5
Carbonaceous material, wollastonite, power plant's ash, lime stone, soda ash and cryolite powder are broken to 0.1 ~ 1mm and mix, mixed proportion is carbonaceous material 4% by weight percentage, wollastonite 30%, power plant's ash 28%, lime stone 12%, soda ash 16%, ice crystal 10% is made mixed material, adds lithium hydroxide then, obtain the lithium doping material, the addition of lithium hydroxide accounts for 4.5% of mixed material; Described carbonaceous material is a graphite;
Add entry and stir into slurry in the lithium doping material, wherein water accounts for 40% of slurry gross weight;
Adopt spray granulation to make the shot-like particle of 0.5 ~ 1.5mm in slurry, roasting under 700 ℃ of conditions then, roasting time 2h makes the ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm;
Ferritic stainless steel is CaO35% with the chemical composition of continuous casting covering slag by weight percentage, SiO
242%, Al
2O
38%, MgO4%, Na
2O4%, CaF
23%, Li
2O1%, C3%; Basicity is 0.83;
Adopt above-mentioned continuous casting covering slag to carry out stainless steel continuous casting production, compare with original continuous casting covering slag, casting process is smooth, and the continuous casting difficulty does not take place, and the corrosion resistant plate surface quality of producing obviously improves.
Embodiment 6
Carbonaceous material, wollastonite, power plant's ash, lime stone, soda ash and cryolite powder are broken to 0.1 ~ 1mm and mix, mixed proportion is carbonaceous material 5% by weight percentage, wollastonite 40%, power plant's ash 20%, lime stone 10%, soda ash 10%, ice crystal 15% is made mixed material, adds lithium hydroxide then, obtain the lithium doping material, the addition of lithium hydroxide accounts for 3% of mixed material; Described carbonaceous material is an activated carbon;
Add entry and stir into slurry in the lithium doping material, wherein water accounts for 45% of slurry gross weight;
Adopt spray granulation to make the shot-like particle of 0.5 ~ 1.5mm in slurry, roasting under 500 ℃ of conditions then, roasting time 3h makes the ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm;
Ferritic stainless steel is CaO36% with the chemical composition of continuous casting covering slag by weight percentage, SiO
231%, Al
2O
37%, MgO2%, Na
2O10%, CaF
25%, Li
2O4%, C5%; Basicity is 1.16;
Adopt above-mentioned continuous casting covering slag to carry out stainless steel continuous casting production, compare with original continuous casting covering slag, casting process is smooth, and the continuous casting difficulty does not take place, and the corrosion resistant plate surface quality of producing obviously improves.
Claims (5)
1. ferritic stainless steel continuous casting covering slag is characterized in that: the composition of this covering slag is CaO20 ~ 40%, SiO by weight percentage
230 ~ 50%, Al
2O
35 ~ 10%, MgO1 ~ 5%, Na
2O1 ~ 15%, CaF
21 ~ 10%, Li
2O1 ~ 5%, C2 ~ 8%; Granularity is 0.5 ~ 1.5mm.
2. a kind of ferritic stainless steel continuous casting covering slag according to claim 1, the basicity that it is characterized in that this covering slag is 0.4 ~ 1.3.
3. a kind of ferritic stainless steel continuous casting covering slag according to claim 1, the fusion temperature that it is characterized in that this covering slag is 1030 ~ 1180 ℃.
4. a kind of ferritic stainless steel continuous casting covering slag according to claim 1, it is characterized in that this covering slag cooldown rate during greater than 0.1 ℃/s the crystallization rate be 0.
5. the described a kind of ferritic stainless steel of claim 1 is characterized in that being undertaken by following not step with the preparation method of continuous casting covering slag:
(1) carbonaceous material, wollastonite, power plant's ash, lime stone, soda ash and cryolite powder are broken to 0.1 ~ 1mm and mix, mixed proportion is carbonaceous material 2 ~ 8% by weight percentage, wollastonite 29 ~ 60%, power plant's ash 20 ~ 30%, lime stone 2 ~ 15%, soda ash 10 ~ 20%, ice crystal 5 ~ 15% is made mixed material, adds lithium hydroxide then, the addition of lithium hydroxide accounts for 2.5 ~ 4.5% of mixed material, obtains the lithium doping material; Described carbonaceous material is carbon black, graphite or activated carbon;
(2) add entry in the lithium doping material and stir into slurry, wherein water accounts for 15 ~ 45% of slurry gross weight;
(3) slurry is dry under 300 ~ 500 ℃ of conditions, be 1 ~ 2h drying time, makes powdery ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm; Perhaps slurry is adopted spray granulation to make the shot-like particle of 0.5 ~ 1.5mm, roasting under 500 ~ 900 ℃ of conditions then, roasting time 1 ~ 3h makes the ferritic stainless steel continuous casting covering slag, and granularity is 0.5 ~ 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030787 CN102078949A (en) | 2011-01-28 | 2011-01-28 | Continuous casting mold powder for ferrite stainless steel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030787 CN102078949A (en) | 2011-01-28 | 2011-01-28 | Continuous casting mold powder for ferrite stainless steel and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102078949A true CN102078949A (en) | 2011-06-01 |
Family
ID=44085254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110030787 Pending CN102078949A (en) | 2011-01-28 | 2011-01-28 | Continuous casting mold powder for ferrite stainless steel and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102078949A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836979A (en) * | 2011-06-24 | 2012-12-26 | 中冶连铸技术工程股份有限公司 | Tundish covering agent |
| CN102836980A (en) * | 2011-06-24 | 2012-12-26 | 中冶连铸技术工程股份有限公司 | Crystallizer protection slag for casting stainless steel |
| CN103071771A (en) * | 2012-11-22 | 2013-05-01 | 河南省西保冶材集团有限公司 | Stainless steel dedicated mold fluxes |
| CN104985143A (en) * | 2015-06-10 | 2015-10-21 | 山西太钢不锈钢股份有限公司 | Mold casting method |
| CN106513607A (en) * | 2016-12-30 | 2017-03-22 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer casting powder for 304 stainless steel and preparation method thereof |
| CN108465791A (en) * | 2018-07-09 | 2018-08-31 | 西峡龙成冶金材料有限公司 | A kind of low nickel high-nitrogen austenitic stainless steel continuous crystallizer protecting slag |
| CN109706289A (en) * | 2019-01-23 | 2019-05-03 | 铜陵市大明玛钢有限责任公司 | Roll inoxidizability covering slag and preparation method thereof |
| JP2020192536A (en) * | 2019-05-24 | 2020-12-03 | 日本製鉄株式会社 | Mold powder for continuous casting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657200A (en) * | 2004-12-03 | 2005-08-24 | 太原钢铁(集团)有限公司 | Protective slag for Austenic stainless steel plate wand crystallizer |
| JP2006247712A (en) * | 2005-03-11 | 2006-09-21 | Jfe Steel Kk | Mold powder for continuous casting of steel |
| CN1927502A (en) * | 2006-09-29 | 2007-03-14 | 唐山钢铁股份有限公司 | Low-carbon steel protecting slag for continuous casting of sheet billet and preparing method thereof |
| CN101214534A (en) * | 2008-01-08 | 2008-07-09 | 河南通宇冶材集团有限公司 | Preliminary melting type continuous casting crystallizer protecting slag and preparation thereof |
| CN101254526A (en) * | 2008-02-22 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Special-shaped billet casting machine continuous casting weathering steel crystallizer protection slag |
-
2011
- 2011-01-28 CN CN 201110030787 patent/CN102078949A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657200A (en) * | 2004-12-03 | 2005-08-24 | 太原钢铁(集团)有限公司 | Protective slag for Austenic stainless steel plate wand crystallizer |
| JP2006247712A (en) * | 2005-03-11 | 2006-09-21 | Jfe Steel Kk | Mold powder for continuous casting of steel |
| CN1927502A (en) * | 2006-09-29 | 2007-03-14 | 唐山钢铁股份有限公司 | Low-carbon steel protecting slag for continuous casting of sheet billet and preparing method thereof |
| CN101214534A (en) * | 2008-01-08 | 2008-07-09 | 河南通宇冶材集团有限公司 | Preliminary melting type continuous casting crystallizer protecting slag and preparation thereof |
| CN101254526A (en) * | 2008-02-22 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Special-shaped billet casting machine continuous casting weathering steel crystallizer protection slag |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836979A (en) * | 2011-06-24 | 2012-12-26 | 中冶连铸技术工程股份有限公司 | Tundish covering agent |
| CN102836980A (en) * | 2011-06-24 | 2012-12-26 | 中冶连铸技术工程股份有限公司 | Crystallizer protection slag for casting stainless steel |
| CN103071771A (en) * | 2012-11-22 | 2013-05-01 | 河南省西保冶材集团有限公司 | Stainless steel dedicated mold fluxes |
| CN104985143A (en) * | 2015-06-10 | 2015-10-21 | 山西太钢不锈钢股份有限公司 | Mold casting method |
| CN106513607A (en) * | 2016-12-30 | 2017-03-22 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer casting powder for 304 stainless steel and preparation method thereof |
| CN106513607B (en) * | 2016-12-30 | 2018-07-10 | 河南省西保冶材集团有限公司 | A kind of 304 stainless steel continuous crystallizer protecting slags and preparation method thereof |
| CN108465791A (en) * | 2018-07-09 | 2018-08-31 | 西峡龙成冶金材料有限公司 | A kind of low nickel high-nitrogen austenitic stainless steel continuous crystallizer protecting slag |
| CN109706289A (en) * | 2019-01-23 | 2019-05-03 | 铜陵市大明玛钢有限责任公司 | Roll inoxidizability covering slag and preparation method thereof |
| JP2020192536A (en) * | 2019-05-24 | 2020-12-03 | 日本製鉄株式会社 | Mold powder for continuous casting |
| JP7284397B2 (en) | 2019-05-24 | 2023-05-31 | 日本製鉄株式会社 | Mold powder for continuous casting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102078949A (en) | Continuous casting mold powder for ferrite stainless steel and preparation method thereof | |
| CN103979795B (en) | A kind of method utilizing blast furnace cinder to produce foam pyroceram sheet material and equipment thereof | |
| CN101653819B (en) | Continuous casting tundish hollow particle carbon-free covering agent and preparation method thereof | |
| CN102114534B (en) | Chromium-containing diversion sands for steel ladle and preparation method thereof | |
| CN103011862B (en) | Environment-friendly carbon-free tundish dry material | |
| CN102233413A (en) | Ultra-pure steel corrosion-free type covering agent and production method thereof | |
| CN103539357A (en) | Silicon-slag microcrystalline glass and preparation method thereof | |
| CN102674852A (en) | Preparation method of tundish working lining | |
| CN102389955A (en) | Crystallizer casting powder for high-aluminum steel continuous casting | |
| CN103008918A (en) | Submerged-arc welding flux for high-strength steel with strength not smaller than 780MPa, manufacture method and welding wire | |
| CN104226947A (en) | Tundish covering agent for ultra-low-carbon steel | |
| CN104926131A (en) | Vanadium titano-magnetite tailing glass-ceramic and preparation method thereof | |
| CN103128243B (en) | High aluminum steel special continuous casting crystallizer casting powder | |
| CN102650001A (en) | Scrap copper aluminum-removal complexing agent and method for producing same | |
| CN103288333A (en) | Modified slag compound admixture and preparation method thereof | |
| CN101658909B (en) | Crystallizer protection slag and preparation method thereof | |
| CN106282659A (en) | A kind of lead smelting removes antimony agent and except antimony technique with compound | |
| CN102260094B (en) | Preparation method of diffuse type permeable material | |
| CN103409616B (en) | Method for inhibiting low-temperature reduction degradation of sintering ore of iron ore | |
| CN105039630A (en) | Titanium-containing efficient slag remover and preparing method | |
| CN102134625A (en) | Method for producing castings by smelting iron chips with medium frequency furnace and briquetting | |
| CN102399055A (en) | Method for preparing super-fine inorganic fiber by using nickel-iron smelting waste residue | |
| CN102515825A (en) | Chromium slag and chromium reducing furnace slag high-temperature melt foaming method and foaming device | |
| CN104496190A (en) | Conditioning material for preparation of mineral wool from thermal blast furnace slag and preparation method thereof | |
| CN105312523A (en) | Tundish covering agent for non-oriented silicon steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110601 |