CN103100676A - Continuous casting tundish current stabilizer and preparation method thereof - Google Patents
Continuous casting tundish current stabilizer and preparation method thereof Download PDFInfo
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 59
- 238000009749 continuous casting Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 28
- 229910052593 corundum Inorganic materials 0.000 claims description 32
- 239000010431 corundum Substances 0.000 claims description 32
- 239000000835 fiber Substances 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000011265 semifinished product Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 235000014380 magnesium carbonate Nutrition 0.000 claims 10
- 239000011863 silicon-based powder Substances 0.000 claims 4
- 238000002156 mixing Methods 0.000 claims 2
- 239000001488 sodium phosphate Substances 0.000 claims 2
- 229910000162 sodium phosphate Inorganic materials 0.000 claims 2
- 239000013638 trimer Substances 0.000 claims 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims 2
- 238000005303 weighing Methods 0.000 claims 2
- 230000000740 bleeding effect Effects 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 48
- 239000002245 particle Substances 0.000 description 29
- 239000000395 magnesium oxide Substances 0.000 description 24
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 3
- 235000019832 sodium triphosphate Nutrition 0.000 description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000007580 dry-mixing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000009865 steel metallurgy Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
Description
技术领域technical field
本发明涉及一种钢铁冶金稳流器，具体涉及到一种连铸中间包稳流器，以及其制备方法。The invention relates to a steel metallurgy current stabilizer, in particular to a continuous casting tundish current stabilizer and a preparation method thereof.
背景技术Background technique
随着连铸技术的发展，提高铸坯质量、延长拉钢时间是每个钢铁企业所追求的目标，稳流器的使用是提高钢材质量和中间包使用寿命的必要手段，特别是近年来奇数流中间包应用的增多，更是对稳流器的使用时间，特别是稳流器前壁的使用寿命提出了更高的要求。With the development of continuous casting technology, improving the quality of billet and prolonging the steel drawing time are the goals pursued by every iron and steel enterprise. The use of current stabilizers is a necessary means to improve the quality of steel and the service life of tundish, especially The increase in the application of the flow tundish puts forward higher requirements on the service life of the flow stabilizer, especially the service life of the front wall of the flow stabilizer.
近年来耐火行业的不断发展，连铸三大件的使用寿命也得到了很大的提高，伴随着奇数流中间包的不断增多，对稳流器前壁使用寿命的要求也在提高，传统的单一材质的稳流器在使用过程中由于钢水的不断冲击容易倒塌，容易发生撞断塞棒等事故，使用定径水口拉钢时，稳流器前壁的过快损坏也会加速中间包中心部位水口的扩径，缩短中间包的使用寿命，同时稳流器前壁损坏后，钢水对于稳流器正对面的工作衬的侵蚀也会加剧，从而缩短工作衬的使用时间，整体提升稳流器用料档次可以解决以上问题，但会造成稳流器成本的大幅增加。With the continuous development of the refractory industry in recent years, the service life of the three major continuous casting parts has also been greatly improved. With the increasing number of odd-flow tundishes, the requirements for the service life of the front wall of the current stabilizer are also increasing. The traditional The single-material flow stabilizer is prone to collapse due to the continuous impact of molten steel during use, and is prone to accidents such as breaking the stopper rod. When using a sizing nozzle to draw steel, the rapid damage of the front wall of the flow stabilizer will also accelerate the center of the tundish. The diameter expansion of the part of the nozzle shortens the service life of the tundish. At the same time, after the front wall of the flow stabilizer is damaged, the erosion of the molten steel on the working lining directly opposite the flow stabilizer will also intensify, thereby shortening the service time of the working lining and improving the overall flow stability. The grade of material used for the regulator can solve the above problems, but it will cause a substantial increase in the cost of the current stabilizer.
发明内容Contents of the invention
为了克服上述问题，可明显的提高稳流器前壁的使用寿命，有效的控制耐材成本，本发明的目的是这样实现的：In order to overcome the above problems, the service life of the front wall of the current stabilizer can be significantly improved, and the cost of refractory materials can be effectively controlled. The purpose of the present invention is achieved in this way:
本发明连铸中间包稳流器特征如下：稳流器由稳流器的上部(1与稳流器的下部(2组成，稳流器的的上部1由刚玉质浇注料浇注而成，稳流器的下部2由镁质浇注料浇注而成，高度h为150～350mm。The characteristics of the current stabilizer of the continuous casting tundish of the present invention are as follows: the current stabilizer is composed of the upper part (1) of the current stabilizer and the lower part (2) of the current stabilizer, and the upper part 1 of the current stabilizer is formed by pouring corundum castable material, and the stabilizer The
所述用于连铸中间包稳流器上部1的刚玉质浇注料，按重量由下述材料组成：8～5mm粒度的电熔棕刚玉8～15份，5～3mm粒度的电熔棕刚玉12～18份，3～1mm粒度的电熔白刚玉22～28份，1～0.083mm粒度的电熔白刚玉12～18份，180目电熔白刚玉20～25份，325目氧化铝微粉4～6份，硅微粉0.8～1.2份，纯铝酸钙水泥4.5～6份，三聚磷酸钠0.1～0.3份，防爆纤维0.05～0.08份，钢纤维0.8～1.2份。The corundum castable used for the upper part 1 of the continuous casting tundish current stabilizer is composed of the following materials by weight: 8-15 parts of fused brown corundum with a particle size of 8-5 mm, and fused brown corundum with a particle size of 5-3 mm 12 to 18 parts, 22 to 28 parts of fused white corundum with a particle size of 3 to 1 mm, 12 to 18 parts of fused white corundum with a particle size of 1 to 0.083 mm, 20 to 25 parts of fused white corundum with a particle size of 180 mesh, and alumina micropowder of 325 mesh 4 to 6 parts, 0.8 to 1.2 parts of silicon micropowder, 4.5 to 6 parts of pure calcium aluminate cement, 0.1 to 0.3 parts of sodium tripolyphosphate, 0.05 to 0.08 parts of explosion-proof fiber, and 0.8 to 1.2 parts of steel fiber.
优选的，所述用于连铸中间包稳流器上部1的刚玉质浇注料，按重量百分比由下述材料组成：8～5mm粒度的电熔棕刚玉10份，5～3mm粒度的电熔棕刚玉15份，3～1mm粒度的电熔白刚玉25份，1～0.083mm粒度的电熔白刚玉15份，180目电熔白刚玉22份，325目氧化铝微粉6份，硅微粉1份，牌号为CA70纯铝酸钙水泥5份，三聚磷酸钠0.1份，防爆纤维0.05份，钢纤维0.85份。Preferably, the corundum castable used for the upper part 1 of the continuous casting tundish current stabilizer is composed of the following materials in percentage by weight: 10 parts of fused brown corundum with a particle size of 8 to 5 mm, fused fused alumina with a particle size of 5 to 3 mm 15 parts of brown corundum, 25 parts of fused white corundum with particle size of 3-1 mm, 15 parts of fused white corundum with particle size of 1-0.083 mm, 22 parts of fused white corundum of 180 mesh, 6 parts of 325 mesh alumina micropowder, 1 microsilica powder The grade is CA70 pure calcium aluminate cement 5 parts, sodium tripolyphosphate 0.1 part, explosion-proof fiber 0.05 part, steel fiber 0.85 part.
所述用于连铸中间包稳流器下部2的镁质浇注料，按重量由下述材料组成：8～5mm粒度的高纯镁砂8～12份，5～3mm粒度的高纯镁砂18～23份，3～1mm粒度的高纯镁砂18～23份，1～0.083mm粒度的高纯镁砂12～18份，200目电熔镁砂25～32份，硅微粉2.5～4份，六偏磷酸钠0.4～0.8份，防爆纤维0.08～0.12份，钢纤维0.8～1.2份。The magnesia castable for the
优选的，所述用于连铸中间包稳流器下部2的镁质浇注料，按重量百分比由下述材料组成：8～5mm粒度的高纯镁砂10份，5～3mm粒度的高纯镁砂20份，3～1mm粒度的高纯镁砂20份，1～0.083mm粒度的高纯镁砂15份，200目电熔镁砂30份，硅微粉3.5份，六偏磷酸钠0.5份，防爆纤维0.1份，钢纤维0.9份。Preferably, the magnesia castable used for the
所述硅微粉，SiO2含量≥91％，粒度小于5μm，且粒度小于3μm的占85～90％。The silicon micropowder has a SiO 2 content ≥ 91%, a particle size of less than 5 μm, and 85-90% of the particle size is less than 3 μm.
该连铸中间包稳流器的制备，可以采用以下步骤：The preparation of the continuous casting tundish flow stabilizer can adopt the following steps:
(1)先浇注稳流器下部2的镁质浇注料，将所述称量好的稳流器的镁质浇注料加入混砂机干混3～4分钟，加物料总重量5.5～6.5％的水，湿混4～6分钟，搅拌成适合浇注的泥状；(1) First cast the magnesia castable in the
(2)将混合好的镁质浇注料放入模具中，点振4～6下；(2) Put the mixed magnesia castable into the mold and vibrate for 4-6 times;
(3)而后浇注稳流器上部1的刚玉质浇注料，将所述称量好的稳流器的刚玉质浇注料加入混砂机干混3～4分钟，加物料总重量5～6％的水，湿混4～6分钟，搅拌成适合浇注的泥状；(3) Then pour the corundum castable on the upper part 1 of the current stabilizer, add the weighed corundum castable of the stabilizer to the sand mixer and dry mix for 3 to 4 minutes, add 5 to 6% of the total weight of the material water, wet mix for 4-6 minutes, and stir into a mud suitable for pouring;
(4)将混合好的刚玉质浇注料放入已浇注镁质浇注料的模具内，边加料边用振动台振动，待表面轻微泛浆且无大的气泡冒出时，复合稳流器成型完成；(4) Put the mixed corundum castable into the mold where the magnesium castable has been poured, vibrate with a vibrating table while feeding, and when the surface is slightly panned and no large bubbles emerge, the composite flow stabilizer is formed Finish;
(5)在60～90℃的环境下带模养护；(5) Curing with a mold in an environment of 60-90°C;
(6)脱模，得到稳流器的半成品，进行自然养护；(6) demoulding, obtain the semi-finished product of current stabilizer, carry out natural maintenance;
(7)干燥，将自然养护后的稳流器半成品进行干燥，即得到稳流器成品。(7) Drying, drying the semi-finished current stabilizer after natural curing to obtain the finished current stabilizer.
优选的，步骤(5)在75～90℃的环境下带模养护12小时，保证半成品有足够的强度脱模。Preferably, in step (5), the mold is cured for 12 hours at an environment of 75-90° C. to ensure that the semi-finished product has sufficient strength to be released from the mold.
优选的，步骤(6)中的自然养护是脱模后的稳流器半成品在自然环境下养护24小时，以保证半成品强度达到最佳。Preferably, the natural curing in step (6) is to maintain the semi-finished current stabilizer after demoulding for 24 hours in a natural environment, so as to ensure that the strength of the semi-finished product reaches the best.
优选的，步骤(7)中的干燥过程是在烘烤窑中进行干燥36～40小时，最高温度250℃，保证制品中水分充分排除，防止使用过程中炸裂，然后自然冷却至常温后即可出窑。Preferably, the drying process in step (7) is to dry in a baking kiln for 36 to 40 hours at a maximum temperature of 250°C to ensure that the moisture in the product is fully removed to prevent bursting during use, and then it can be cooled naturally to room temperature Out of the kiln.
本发明所提供的连铸中间包稳流器，可明显的提高稳流器前壁的使用寿命，避免稳流器前壁在浇钢过程中倒塌现象的出现，可大幅提高连铸中间包的使用时间，降低钢厂生产成本，同时有效的控制耐材成本，具有良好的经济效益与社会效益。The current stabilizer for continuous casting tundish provided by the present invention can significantly improve the service life of the front wall of the current stabilizer, avoid the collapse of the front wall of the current stabilizer in the process of pouring steel, and can greatly improve the durability of the continuous casting tundish. Use time, reduce the production cost of steel mills, and effectively control the cost of refractory materials at the same time, with good economic and social benefits.
附图说明Description of drawings
图1为本发明稳流器的半剖面图。Fig. 1 is a half-sectional view of the current stabilizer of the present invention.
具体实施方式Detailed ways
以下是对发明的制备方法进一步说明，但本发明并不局限于此。The following is a further description of the preparation method of the invention, but the invention is not limited thereto.
优选的，所述的连铸中间包稳流器，其特征在于，稳流器的的上部1由刚玉质浇注料浇注而成，稳流器的下部2由镁质浇注料浇注而成，高度h为150～350mm。Preferably, the continuous casting tundish current stabilizer is characterized in that the upper part 1 of the current stabilizer is cast from corundum castable material, and the
所述用于连铸中间包稳流器上部1的刚玉质浇注料，按重量百分比由下述材料组成：8～5mm粒度的电熔棕刚玉10份，5～3mm粒度的电熔棕刚玉15份，3～1mm粒度的电熔白刚玉25份，1～0.083mm粒度的电熔白刚玉15份，180目电熔白刚玉22份，325目氧化铝微粉6份，硅微粉1份，牌号为CA70纯铝酸钙水泥5份，三聚磷酸钠0.1份，防爆纤维0.05份，钢纤维0.85份。The corundum castable for the upper part 1 of the continuous casting tundish current stabilizer is composed of the following materials in percentage by weight: 10 parts of fused brown corundum with a particle size of 8 to 5 mm, 15 parts of fused brown corundum with a particle size of 5 to 3 mm Parts, 25 parts of fused white corundum with particle size of 3~1mm, 15 parts of fused white corundum with particle size of 1~0.083mm, 22 parts of fused white corundum of 180 mesh, 6 parts of alumina micropowder of 325 mesh, 1 part of silicon micropowder, grade It is 5 parts of CA70 pure calcium aluminate cement, 0.1 part of sodium tripolyphosphate, 0.05 part of explosion-proof fiber, and 0.85 part of steel fiber.
所述用于连铸中间包稳流器下部2的镁质浇注料，按重量百分比由下述材料组成：8～5mm粒度的高纯镁砂10份，5～3mm粒度的高纯镁砂20份，3～1mm粒度的高纯镁砂20份，1～0.083mm粒度的高纯镁砂15份，200目电熔镁砂30份，硅微粉3.5份，六偏磷酸钠0.5份，防爆纤维0.1份，钢纤维0.9份。The magnesia castable used for the
所述硅微粉，SiO2含量≥91％，粒度小于5μm，且粒度小于3μm的占80～85％。The silicon micropowder has a SiO 2 content ≥ 91%, a particle size of less than 5 μm, and 80-85% of the particle size is less than 3 μm.
所述的连铸中间包稳流器的制备方法，包括以下步骤：The preparation method of the described continuous casting tundish flow stabilizer comprises the following steps:
(1)先浇注稳流器下部2的镁质浇注料，将所述称量好的稳流器的镁质浇注料加入混砂机干混3～4分钟，加物料总重量6％的水，湿混4～6分钟，搅拌成适合浇注的泥状；(1) First pour the magnesia castable in the
(2)将混合好的镁质浇注料放入模具中，点振4～6下；(2) Put the mixed magnesia castable into the mold and vibrate for 4-6 times;
(3)而后浇注稳流器上部1的刚玉质浇注料，将所述称量好的稳流器的刚玉质浇注料加入混砂机干混3～4分钟，加物料总重量5.5％的水，湿混4～6分钟，搅拌成适合浇注的泥状；(3) Then pour the corundum castable on the upper part 1 of the current stabilizer, add the weighed corundum castable to the sand mixer for dry mixing for 3 to 4 minutes, add 5.5% of the total weight of the material in water , wet mix for 4 to 6 minutes, and stir into a slurry suitable for pouring;
(4)将混合好的刚玉质浇注料放入已浇注镁质浇注料的模具内，边加料边用振动台振动，待表面轻微泛浆且无大的气泡冒出时，复合稳流器成型完成；(4) Put the mixed corundum castable into the mold where the magnesium castable has been poured, vibrate with a vibrating table while feeding, and when the surface is slightly panned and no large bubbles emerge, the composite flow stabilizer is formed Finish;
(5)在75～90℃的环境下带模养护12小时，保证半成品有足够的强度脱模；(5) Curing with mold for 12 hours in an environment of 75-90°C to ensure that the semi-finished product has sufficient strength to demould;
(6)脱模，得到稳流器的半成品，在自然环境下养护24小时，以保证半成品强度达到最佳；(6) demoulding to obtain the semi-finished product of the current stabilizer, which is maintained in a natural environment for 24 hours to ensure that the strength of the semi-finished product reaches the best;
(7)干燥，将自然养护后的稳流器半成品进行干燥，干燥过程是在烘烤窑中进行干燥36～40小时，最高温度250℃，保证制品中水分充分排除，防止使用过程中炸裂，然后自然冷却至常温后即可出窑，即得到中间包稳流器成品。(7) Drying. Dry the semi-finished products of the current stabilizer after natural curing. The drying process is to dry in a baking kiln for 36 to 40 hours, with a maximum temperature of 250°C to ensure that the moisture in the product is fully removed and prevent cracking during use. Then it can be left out of the kiln after naturally cooling to normal temperature, and the finished product of the tundish flow stabilizer can be obtained.
以上所述的具体描述，对发明的目的与技术方案作了进一步说明，以上所述仅为本发明的具体实施例，并不用于限定本发明的保护范围，凡在本发明的精神和原则内所做的任何修改、等同替代与改进等，均应包含在本发明的保护范围之内。The specific description above has further explained the purpose and technical solution of the invention. The above description is only a specific embodiment of the present invention and is not used to limit the protection scope of the present invention. All within the spirit and principles of the present invention Any modifications, equivalent substitutions and improvements, etc., should be included within the protection scope of the present invention.
Claims (8)
Priority Applications (1)
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Cited By (7)
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| CN103453824A (en) * | 2013-07-23 | 2013-12-18 | 山东莱钢永锋钢铁有限公司 | Current stabilizer measuring method and tool |
| CN103613399A (en) * | 2013-12-10 | 2014-03-05 | 攀枝花钢城集团有限公司 | Preparation method of permanent layer castable and permanent layer for ferrovanadium smelting furnace |
| CN103769567A (en) * | 2014-02-13 | 2014-05-07 | 唐山市国亮特殊耐火材料有限公司 | Tundish composite current regulator and preparation method thereof |
| CN106699199A (en) * | 2016-12-12 | 2017-05-24 | 河北互兴环保科技股份有限公司 | Falling chute brick and production process of falling chute brick |
| CN107954702A (en) * | 2017-12-08 | 2018-04-24 | 攀枝花钢城集团有限公司 | A kind of vanadium iron smelting furnace castable and the preparation method for pouring into a mould permanent layer |
| CN106007753B (en) * | 2016-05-19 | 2019-01-29 | 山东钢铁股份有限公司 | Castable and with the castable prepare current stabilization pushing off the slag bucket and their preparation method |
| CN111069579A (en) * | 2019-12-31 | 2020-04-28 | 浙江红鹰铭德高温材料科技有限公司 | Long-life tundish integral impact barrel, formula and manufacturing process thereof |
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| CN103453824A (en) * | 2013-07-23 | 2013-12-18 | 山东莱钢永锋钢铁有限公司 | Current stabilizer measuring method and tool |
| CN103453824B (en) * | 2013-07-23 | 2016-06-22 | 山东莱钢永锋钢铁有限公司 | Flow straightener measuring method and survey tool |
| CN103613399A (en) * | 2013-12-10 | 2014-03-05 | 攀枝花钢城集团有限公司 | Preparation method of permanent layer castable and permanent layer for ferrovanadium smelting furnace |
| CN103769567A (en) * | 2014-02-13 | 2014-05-07 | 唐山市国亮特殊耐火材料有限公司 | Tundish composite current regulator and preparation method thereof |
| CN103769567B (en) * | 2014-02-13 | 2016-06-22 | 唐山市国亮特殊耐火材料有限公司 | Tundish compound flow straightener and preparation method thereof |
| CN106007753B (en) * | 2016-05-19 | 2019-01-29 | 山东钢铁股份有限公司 | Castable and with the castable prepare current stabilization pushing off the slag bucket and their preparation method |
| CN106699199A (en) * | 2016-12-12 | 2017-05-24 | 河北互兴环保科技股份有限公司 | Falling chute brick and production process of falling chute brick |
| CN107954702A (en) * | 2017-12-08 | 2018-04-24 | 攀枝花钢城集团有限公司 | A kind of vanadium iron smelting furnace castable and the preparation method for pouring into a mould permanent layer |
| CN111069579A (en) * | 2019-12-31 | 2020-04-28 | 浙江红鹰铭德高温材料科技有限公司 | Long-life tundish integral impact barrel, formula and manufacturing process thereof |
| CN111069579B (en) * | 2019-12-31 | 2021-10-15 | 浙江红鹰铭德高温材料科技有限公司 | Long-life tundish integral impact barrel, formula and manufacturing process thereof |
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