CN112759406A - Carbon-free submerged nozzle lining material and preparation method thereof - Google Patents
Carbon-free submerged nozzle lining material and preparation method thereof Download PDFInfo
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- CN112759406A CN112759406A CN202110228835.2A CN202110228835A CN112759406A CN 112759406 A CN112759406 A CN 112759406A CN 202110228835 A CN202110228835 A CN 202110228835A CN 112759406 A CN112759406 A CN 112759406A
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- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/52—Manufacturing or repairing thereof
- B22D41/54—Manufacturing or repairing thereof characterised by the materials used therefor
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
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Abstract
The invention relates to the technical field of refractory materials, and discloses a carbon-free submerged nozzle lining material and a preparation method thereof. The carbon-free submerged nozzle lining material consists of the following raw materials in parts by weight: 30-50 parts of zirconium mullite, 15-25 parts of porous material, 5-10 parts of white corundum 80#, 10-15 parts of white corundum 200 meshes, 10-15 parts of white corundum 320 meshes, 0.5-1 part of silicon carbide, 0.5-1 part of boron glass, 0.5-1 part of boron nitride and 2-10 parts of liquid phenolic resin. The submerged nozzle prepared by the submerged nozzle lining material provided by the invention has higher strength and better thermal shock stability, and the submerged nozzle prepared by the submerged nozzle lining material does not carburete molten steel and has no nodulation phenomenon.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to a carbon-free submerged nozzle lining material and a preparation method thereof.
Background
Continuous casting immersion nozzle is the key refractory material of package and crystallizer in the middle of connecting, and the molten steel passes through immersion nozzle and gets into the crystallizer, through the relative position of real-time regulation immersion nozzle upper portion and stopper stick, changes the gap between the two, and control immersion nozzle cross-section steel passing amount and conticaster production efficiency, the crystallizer liquid level state is being decided to influence the continuous casting billet quality. In recent years, demand for ultra-low carbon steel has been increasing worldwide. To meet this requirement, the carbon content should be minimized during the smelting of molten steel. The submerged nozzle that uses at present is mostly carbonaceous material, and the decarbonization phenomenon that exists in its use leads to the carbon content grow in the molten steel. Meanwhile, in the transmission process, the molten steel inevitably contacts the inner wall of the submerged nozzle, and inclusions contained in the molten steel are adhered and gathered on the inner wall of the submerged nozzle, so that nodules are formed on the inner wall of the submerged nozzle along with the prolonging of time. Carbon is one of the main causes of nozzle clogging, so the nozzle clogging of aluminum carbon is the main problem faced at present, because the nozzle clogging not only blocks the molten steel flowing from the tundish to the crystallizer, but also affects the molten steel flowing direction, thereby affecting the molten steel quality. Therefore, carbon-free submerged entry nozzles have become a necessary trend in development.
However, as the carbon content in the submerged nozzle lining material is reduced, the thermal shock stability of the material is deteriorated, and the submerged nozzle lining material is easy to crack and peel during use, thereby influencing the use of the submerged nozzle.
Therefore, how to provide a carbon-free submerged nozzle lining material, which enables the submerged nozzle to have high thermal shock stability on the basis of no carbon, is a difficult problem to be solved in the field.
Disclosure of Invention
In view of the above, the invention discloses a carbon-free submerged nozzle lining material and a preparation method thereof, which solve the problem that the thermal shock stability of the submerged nozzle lining material is deteriorated along with the reduction of the carbon content, and realize the coexistence effect of the carbon-free submerged nozzle lining material and the thermal shock stability.
In order to achieve the above object, the present invention provides the following technical solutions:
a carbon-free submerged nozzle lining material comprises the following raw materials in parts by weight: 30-50 parts of zirconium mullite, 15-25 parts of porous material, 5-10 parts of white corundum 80#, 10-15 parts of white corundum 200 meshes, 10-15 parts of white corundum 320 meshes, 0.5-1 part of silicon carbide, 0.5-1 part of boron glass, 0.5-1 part of boron nitride and 2-10 parts of liquid phenolic resin.
Preferably, the zirconium mullite contains two grain size ranges, wherein, the zirconium mullite with the grain size of 0.21-0.59mm accounts for 20-30 parts, and the grain size of the rest zirconium mullite is less than or equal to 0.21 mm.
Preferably, the porous material is prepared by using alumina, quartz powder and magnesia as raw materials, using paper pulp waste liquid as a bonding agent, performing wet grinding and ageing on the raw materials, then performing compression molding under the pressure of 90-110MPa, drying the raw materials, and performing heat preservation at the temperature of 1400-1500 ℃ for 2-3h in-situ sintering reaction;
wherein the ageing time is 10-12 h.
Preferably, the mass ratio of the chemical components of the porous material is MgO: al (Al)2O3：SiO23-10: 50-60: 30-40, wherein the addition amount of the pulp waste liquid accounts for 8-15% of the porous material.
Preferably, the particle size of the porous material is less than or equal to 0.21mm, wherein 200-mesh screening accounts for 30-40% of the total amount.
Preferably, the viscosity of the liquid phenolic resin is more than 600-1000 mPas at 20 ℃.
The invention also aims to provide a preparation method of the carbon-free submerged nozzle lining material, which comprises the following specific preparation steps:
1) weighing zirconium mullite, a porous material, white corundum, silicon carbide, boron glass and boron nitride, uniformly mixing, and then co-grinding to prepare mixed powder;
2) adding liquid phenolic resin into the mixed powder prepared in the step 1), mixing, and then granulating to obtain granules;
3) drying the granulated material, putting the dried granulated material into a mold, sealing the mold, and performing isostatic pressing and molding;
4) and (3) pressing and forming the granulated material, and then demoulding to obtain the carbon-free submerged nozzle lining material. Preferably, the discharge temperature of the granulated material obtained in the step 2) is controlled to be 40-60 ℃.
Preferably, the pressure of isostatic pressing in step 3) is 25-30 MPa. The pressing time is 1-1.5 h.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the porous material prepared by the in-situ sintering reaction has better performances of high temperature resistance, erosion resistance, high strength and the like, and the prepared lining material can also show special performances of light weight, heat insulation, energy absorption, high specific surface area and the like which are unique to non-compact materials. The phase in the porous material has better thermal shock stability and erosion resistance. The porous material has better heat insulation performance, and further prevents the submerged nozzle body and the slag line material from cracking. In addition, the porous material has higher strength, and the anti-scouring performance of the submerged nozzle lining material is enhanced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment discloses a submerged nozzle lining material with high thermal shock stability, which comprises the following components in parts by weight: 30 parts of zirconium mullite, 20 parts of porous material, 10 parts of white corundum 80#, 10 parts of white corundum 200 meshes, 10 parts of white corundum 320 meshes, 0.5 part of silicon carbide, 0.5 part of boron glass, 1 part of boron nitride and 2 parts of liquid phenolic resin.
Wherein, 20 parts of zirconium mullite with the grain diameter of 0.21-0.59mm and 10 parts of zirconium mullite with the grain diameter of 0-0.21 mm. The porous material is sieved by a 200-mesh sieve to account for 40% of the total weight, wherein the mass ratio of chemical components of the porous material is MgO: al (Al)2O3：SiO23: 50: 35, the addition amount of the pulp waste liquid accounts for 10% of the porous material.
Example 2
The embodiment discloses a submerged nozzle lining material with high thermal shock stability, which comprises the following components in parts by weight: 35 parts of zirconium mullite, 20 parts of porous material, 10 parts of white corundum 80#, 10 parts of white corundum 200 meshes, 10 parts of white corundum 320 meshes, 1 part of silicon carbide, 0.5 part of boron glass, 1 part of boron nitride and 5 parts of liquid phenolic resin.
Wherein, 20 parts of zirconium mullite with the grain diameter of 0.21-0.59mm and 15 parts of zirconium mullite with the grain diameter of 0-0.21 mm. The porous material is sieved by a 200-mesh sieve to account for 40% of the total weight, wherein the mass ratio of chemical components of the porous material is MgO: al (Al)2O3：SiO25: 50: 40, the addition amount of the pulp waste liquid accounts for 10% of the porous material.
Example 3
The embodiment discloses a submerged nozzle lining material with high thermal shock stability, which comprises the following components in parts by weight: 45 parts of zirconium mullite, 25 parts of porous material, 10 parts of white corundum 80#, 10 parts of white corundum 200 meshes, 10 parts of white corundum 320 meshes, 1 part of silicon carbide, 1 part of boron glass, 1 part of boron nitride and 8 parts of liquid phenolic resin.
Wherein, 30 parts of zirconium mullite with the grain diameter of 0.21-0.59mm and 15 parts of zirconium mullite with the grain diameter of 0-0.21 mm. The porous material is sieved by a 200-mesh sieve to account for 30% of the total amount, wherein the mass ratio of chemical components of the porous material is MgO: al (Al)2O3：SiO2When the ratio is 8: 60: 30, the addition amount of the pulp waste liquid accounts for 15% of the porous material.
Example 4
The embodiment discloses a submerged nozzle lining material with high thermal shock stability, which comprises the following components in parts by weight: 50 parts of zirconium mullite, 20 parts of porous material, 10 parts of white corundum 80#, 15 parts of white corundum 200 meshes, 15 parts of white corundum 320 meshes, 1 part of silicon carbide, 0.5 part of boron glass, 1 part of boron nitride and 10 parts of liquid phenolic resin.
Wherein, 30 parts of zirconium mullite with the grain diameter of 0.21-0.59mm and 20 parts of zirconium mullite with the grain diameter of 0-0.21 mm. The porous material is sieved by a 200-mesh sieve to account for 40% of the total weight, wherein the mass ratio of chemical components of the porous material is MgO: al (Al)2O3：SiO210: 55: 40, the addition amount of the pulp waste liquid accounts for 8% of the porous material.
Example 5
The embodiment discloses a submerged nozzle lining material with high thermal shock stability, which comprises the following components in parts by weight: 50 parts of zirconium mullite, 15 parts of porous material, 8 parts of white corundum 80#, 12 parts of white corundum 200 meshes, 12 parts of white corundum 320 meshes, 1 part of silicon carbide, 1 part of boron glass, 0.5 part of boron nitride and 8 parts of liquid phenolic resin.
Wherein, 30 parts of zirconium mullite with the grain diameter of 0.21-0.59mm and 20 parts of zirconium mullite with the grain diameter of 0-0.21 mm. The porous material is sieved by a 200-mesh sieve to account for 30% of the total amount, wherein the mass ratio of chemical components of the porous material is MgO: al (Al)2O3：SiO210: 60: 40, the addition amount of the pulp waste liquid accounts for 8% of the porous material.
Example 6
The embodiment discloses a submerged nozzle lining material with high thermal shock stability, which comprises the following components in parts by weight: 35 parts of zirconium mullite, 15 parts of porous material, 5 parts of white corundum 80#, 15 parts of white corundum 200 meshes, 10 parts of white corundum 320 meshes, 1 part of silicon carbide, 1 part of boron glass, 0.5 part of boron nitride and 5 parts of liquid phenolic resin.
Wherein, 20 parts of zirconium mullite with the grain diameter of 0.21-0.59mm and 15 parts of zirconium mullite with the grain diameter of 0-0.21 mm. The porous material is sieved by a 200-mesh sieve to account for 40% of the total weight, wherein the mass ratio of chemical components of the porous material is MgO: al (Al)2O3：SiO210: 55: 35, the addition amount of the pulp waste liquid accounts for 10% of the porous material.
Example 7
The embodiment discloses a submerged nozzle lining material with high thermal shock stability, which comprises the following components in parts by weight: 35 parts of zirconium mullite, 15 parts of porous material, 5 parts of white corundum 80#, 10 parts of white corundum 200 meshes, 10 parts of white corundum 320 meshes, 1 part of silicon carbide, 1 part of boron glass, 0.5 part of boron nitride and 8 parts of liquid phenolic resin.
Wherein, the zirconium mullite with the grain diameter of 0.21-0.59mm is 22 parts, and the zirconium mullite with the grain diameter of 0-0.21mm is 13 parts. The porous material is sieved by a 200-mesh sieve to account for 35% of the total weight, wherein the mass ratio of chemical components of the porous material is MgO: al (Al)2O3：SiO2When the ratio is 8: 50: 40, the addition amount of the pulp waste liquid accounts for 8% of the porous material.
Example 8
The embodiment discloses an immersion nozzle prepared from an immersion nozzle lining material with high thermal shock stability, which comprises the following specific preparation steps:
1) weighing the zirconium mullite, the porous material, the white corundum, the silicon carbide, the boron glass and the boron nitride according to the parts by weight in the embodiment 1-2, uniformly mixing, and then co-grinding to prepare mixed powder;
2) putting the mixed powder prepared in the step 1) into a granulator, slowly adding liquid resin, granulating while mixing to obtain granules, and controlling the discharging temperature to be 50 ℃;
3) drying the granulated material, putting the dried granulated material into a mold, sealing the mold, and pressing the mixture for 1 hour by using an isostatic press under the pressure of 25MPa for forming;
4) and (3) pressing and forming the granulated material, and then demoulding to obtain the carbon-free submerged nozzle lining material.
Example 9
The embodiment discloses an immersion nozzle prepared from an immersion nozzle lining material with high thermal shock stability, which comprises the following specific preparation steps:
1) weighing the zirconium mullite, the porous material, the white corundum, the silicon carbide, the boron glass and the boron nitride according to the parts by weight in the embodiments 3-5, uniformly mixing, and then co-grinding to prepare mixed powder;
2) putting the mixed powder prepared in the step 1) into a granulator, slowly adding liquid resin, granulating while mixing to obtain granules, and controlling the discharging temperature to be 40 ℃;
3) drying the granulated material, putting the dried granulated material into a rubber mold, sealing the rubber mold, and pressing the rubber mold for 1.5 hours by using an isostatic press under the pressure of 27MPa for forming;
4) and (3) pressing and forming the granulated material, and then demoulding to obtain the carbon-free submerged nozzle lining material.
Example 10
The embodiment discloses an immersion nozzle prepared from an immersion nozzle lining material with high thermal shock stability, which comprises the following specific preparation steps:
1) weighing the zirconium mullite, the porous material, the white corundum, the silicon carbide, the boron glass and the boron nitride according to the parts by weight in the embodiments 6-7, uniformly mixing, and then co-grinding to prepare mixed powder;
2) putting the mixed powder prepared in the step 1) into a granulator, slowly adding liquid resin, granulating while mixing to obtain granules, and controlling the discharging temperature to be 60 ℃;
3) drying the granulated material, putting the dried granulated material into a rubber mold, sealing the rubber mold, and pressing the rubber mold for 1 hour under the pressure of 30MPa by using an isostatic press for molding;
4) and (3) pressing and forming the granulated material, and then demoulding to obtain the carbon-free submerged nozzle lining material.
The volume density, the apparent porosity and the retention rate of the thermal shock residual strength of the submerged nozzle lining material obtained in each embodiment are measured, and the specific measurement steps are as follows:
1. cutting sample blocks of 25mm × 25mm × 140mm of pressure-resistant standard brick, and measuring dry sample mass m1: before weighing, brushing dust and fine particles attached to the surface of a sample, drying in an electric heating drying oven to constant weight, namely drying until the mass difference between the last two times of weighing is not more than 0.1%, naturally cooling in a dryer to room temperature, and weighing the mass m1 of each sample to be accurate to 0.01 g;
2. placing the sample into an immersion liquid tank, placing the immersion liquid tank in a vacuumizing device, vacuumizing until the residual pressure is less than 2500Pa, keeping the test at the vacuum degree for about 5min, slowly injecting immersion liquid within about 3min until the sample is completely submerged, continuing vacuumizing for 5min, stopping exhausting, taking out the immersion liquid tank, and standing in the air for 30min to fully saturate the sample;
3. mass m of saturated sample suspended in liquid2The measurement method comprises rapidly transferring the saturated sample into an immersion liquid with an overflow pipe container, suspending the sample on a hook of a balance after the immersion liquid completely submerges the sample, and weighing the mass m of the saturated sample suspended in the immersion liquid2The accuracy is 0.01g, and the measured immersion liquid temperature is +/-1 ℃;
4. saturated sample mass m3Measurement (take out the sample from the immersion liquid, carefully wipe off excess drops with a cotton towel saturated with immersion liquid, but cannot suck out the liquid in the pores, quickly weigh the mass m of the saturated sample in air3To the nearest 0.01g)
5. Calculation of apparent porosity:
calculation of bulk density:
6. the method for measuring the retention rate of the thermal shock residual strength comprises the following steps: the compressive strength of the pressure-resistant standard brick before thermal shock and the residual compressive strength after 1 time of air-cooling thermal shock (heat preservation at 1400 ℃ for 3 hours) are respectively detected, and the residual compressive strength after 1 time of air-cooling thermal shock/the compressive strength before thermal shock multiplied by 100 percent is the retention rate of the residual compressive strength after shock, and the test results are shown in table 1.
TABLE 1
From the above table, the carbon-free submerged nozzle lining material of the present invention has a high retention of the thermal shock residual strength.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Claims (9)
1. The carbon-free submerged nozzle lining material is characterized by comprising the following raw materials in parts by weight: 30-50 parts of zirconium mullite, 15-25 parts of porous material, 5-10 parts of white corundum 80#, 10-15 parts of white corundum 200 meshes, 10-15 parts of white corundum 320 meshes, 0.5-1 part of silicon carbide, 0.5-1 part of boron glass, 0.5-1 part of boron nitride and 2-10 parts of liquid phenolic resin.
2. The carbon-free submerged nozzle lining material as claimed in claim 1, wherein the zirconium mullite has two grain size ranges, wherein the zirconium mullite with grain size of 0.21-0.59mm is 20-30 parts, and the grain size of the rest zirconium mullite is less than or equal to 0.21 mm.
3. The carbon-free submerged nozzle lining material as claimed in claim 1, wherein the porous material is prepared by using alumina, quartz powder and magnesia as raw materials, using pulp waste liquid as a binding agent, performing wet grinding and ageing, then performing compression molding under 90-110MPa, drying, and then performing heat preservation at 1400-1500 ℃ for 2-3h in-situ sintering reaction;
wherein the ageing time is 10-12 h.
4. The carbon-free submerged nozzle lining material as claimed in claim 3, wherein the porous material has a chemical composition mass ratio of MgO: al (Al)2O3：SiO23-10: 50-60: 30-40, wherein the addition amount of the pulp waste liquid accounts for 8-15% of the porous material.
5. The carbon-free submerged nozzle lining material as claimed in claim 1, wherein the porous material has a particle size of 0.21mm or less, and the 200 mesh sieve accounts for 30-40% of the total amount.
6. The carbon-free lining material for a submerged nozzle as claimed in claim 1, wherein the liquid phenolic resin has a viscosity of 600-1000 mPa-s at 20 ℃.
7. The method for preparing a carbon-free submerged nozzle lining material as claimed in any one of claims 1 to 6, wherein the method comprises the following steps:
1) weighing zirconium mullite, a porous material, white corundum, silicon carbide, boron glass and boron nitride, uniformly mixing, and then co-grinding to prepare mixed powder;
2) adding liquid phenolic resin into the mixed powder prepared in the step 1), mixing, and then granulating to obtain granules;
3) drying the granulated material, putting the dried granulated material into a mold, sealing the mold, and performing isostatic pressing and molding;
4) and (3) pressing and forming the granulated material, and then demoulding to obtain the carbon-free submerged nozzle lining material.
8. The method for preparing a carbon-free submerged nozzle lining material according to claim 7, wherein the discharge temperature of the granulated material obtained in step 2) is controlled to 40-60 ℃.
9. The method for preparing a carbon-free submerged nozzle lining material as claimed in claim 7, wherein the isostatic press pressing in step 3) is performed at a pressure of 25-30MPa for a pressing time of 1-1.5 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110228835.2A CN112759406A (en) | 2021-03-02 | 2021-03-02 | Carbon-free submerged nozzle lining material and preparation method thereof |
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| CN202110228835.2A CN112759406A (en) | 2021-03-02 | 2021-03-02 | Carbon-free submerged nozzle lining material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113999008A (en) * | 2021-12-31 | 2022-02-01 | 北京利尔高温材料股份有限公司 | Low-carbon submersed nozzle lining and preparation method thereof |
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| CN1485295A (en) * | 2002-09-26 | 2004-03-31 | 山东淄川特种耐火材料厂 | Al-C fireproof material for continuous casting and its production method |
| CN101712559A (en) * | 2009-05-25 | 2010-05-26 | 上海宝明耐火材料有限公司 | Water gap lining layer material for continuous casting |
| CN102962444A (en) * | 2012-11-22 | 2013-03-13 | 河南省西保冶材集团有限公司 | Erosion-resistant carbon-free long-lifetime immersion type water gap and preparation process thereof |
| CN103480833A (en) * | 2013-09-13 | 2014-01-01 | 洛阳理工学院 | Non-preheat composite structure long nozzle liner material |
| CN103769574A (en) * | 2012-10-22 | 2014-05-07 | 无锡申佳液压科技有限公司 | Water filling opening for continuous casting |
| CN103771874A (en) * | 2012-10-22 | 2014-05-07 | 无锡申佳液压科技有限公司 | Preparation method for upper nozzle used for continuous casting |
| CN203621484U (en) * | 2013-11-18 | 2014-06-04 | 华耐国际（宜兴）高级陶瓷有限公司 | Submerged nozzle with insulating layer |
| CN105665692A (en) * | 2016-03-24 | 2016-06-15 | 洛阳理工学院 | Thermal shock resistant liner composite body for long nozzle and preparation process thereof |
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| JPS63157746A (en) * | 1986-12-19 | 1988-06-30 | Kawasaki Refract Co Ltd | Submerged nozzle for continuous casting |
| JPH09239504A (en) * | 1996-03-04 | 1997-09-16 | Shinagawa Refract Co Ltd | Submerged nozzle for continuous casting of steel containing high oxygen |
| CN1485295A (en) * | 2002-09-26 | 2004-03-31 | 山东淄川特种耐火材料厂 | Al-C fireproof material for continuous casting and its production method |
| CN101712559A (en) * | 2009-05-25 | 2010-05-26 | 上海宝明耐火材料有限公司 | Water gap lining layer material for continuous casting |
| CN103769574A (en) * | 2012-10-22 | 2014-05-07 | 无锡申佳液压科技有限公司 | Water filling opening for continuous casting |
| CN103771874A (en) * | 2012-10-22 | 2014-05-07 | 无锡申佳液压科技有限公司 | Preparation method for upper nozzle used for continuous casting |
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| CN103480833A (en) * | 2013-09-13 | 2014-01-01 | 洛阳理工学院 | Non-preheat composite structure long nozzle liner material |
| CN203621484U (en) * | 2013-11-18 | 2014-06-04 | 华耐国际（宜兴）高级陶瓷有限公司 | Submerged nozzle with insulating layer |
| CN105665692A (en) * | 2016-03-24 | 2016-06-15 | 洛阳理工学院 | Thermal shock resistant liner composite body for long nozzle and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113999008A (en) * | 2021-12-31 | 2022-02-01 | 北京利尔高温材料股份有限公司 | Low-carbon submersed nozzle lining and preparation method thereof |
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Application publication date: 20210507 |