Since the establishment of our company, we have taken the promotion of national industries as our own responsibility and our goal is to become a leading provider of mullite lightweight castable, Mullite Insulation Brick, Coating Resistant Castable in China. In order to get progress and development, we would like to further our communication and cooperate with people in different fields and provide high-quality products and excellent service with all our efforts. We develop new products with the concept of disruptive innovation. We have stable and smooth raw material supply channels. We warmly welcome domestic and overseas customers send inquiry to us, we have 24hours working team!
1,Description of Fused Quartz Nozzle For Continuous Casting:
Fused quartz nozzle is also called quartz ceramic nozzle, which is produced by ceramic grouting process.The product is one of the most important refractories in iron and steel production. It has high replacement frequency and large consumption. The nozzle conveys molten steel to prevent secondary oxidation and splash of molten steel, adjust the flow state of molten steel and purify the molten steel.
The product uses fused quartz as raw material, adopts slurry casting molding and high-temperature sintering. The nozzle has small thermal conductivity (1000 ℃ 2W / m.k), good thermal stability, low thermal expansion rate (1000 ℃ 0.05-0.06%), and is not easy to nodulate. It can be directly applied without preheating before use. The disadvantage is that it is not suitable to cast steel with manganese content more than 0.5%, because Mn reacts with SiO2 to form low melting substance, which accelerates the melting loss of nozzle products.
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2,Index of Fused Quartz Nozzle For Continuous Casting:
Quartz nozzle | Item | Index |
chemical composition % | Al2O3 | ＜0.072 |
Fe 2O3 | ＜0.0054 | |
Na 2O | ＜0.0038 | |
K 2 O | ＜0.0035 | |
SiO 2 | ＜99.5 | |
Bulk density g/cm3 | ≥1.9 | |
Apparent Porosity % | ≤12 | |
Cold Crushing Strength MPa | ≥55 | |
Modulus of rupture MPa | ≥25 | |
Thermal conductivity W/m.k | 0.8 | |
Thermal Expansion ℃-1 | ≤0.9*10-6 | |
degree of crystallinity (vol%) | ≤1 | |
Max service temperature ℃ | 1730 |
3,About us:
Our company and factory have more than 20 years of perfect production technology for fused quartz nozzle bricks(Long nozzle,intrusive nozzle),there are strict quality control systems for products from material selection,ingredients,pulping,shaping and firing,It guarantees the appearance quality and internal quality of the product,and guarantees the user's use effect.The products should be selected strictly before they leave the factory. The unqualified products will never leave the factory,the products are packaged strictly to ensure the intact of each product.
4.Product application performance:
1)The product has the function of resisting sudden temperature change and large temperature difference, and can contact molten steel directly without preheating.
2)The product can effectively resist the erosion of synthetic slag.
3)Under the action of high temperature and flow of molten steel, the product does not deform and has high impact resistance.
4)The product can effectively prevent the oxidation and spatter of molten steel, and is beneficial to improving the quality of billet.
5. Product characteristics:
1) Good thermal shock resistance
2) Higher mechanical strength
3) Better chemical stability
4) Good resistance to acid slag corrosion
6.Good feedback of product use effect,the products have been exported to Japan,Russia,Kenya
7.We are a professional supplier, who can provide customers with free product technology, use and other issues.
8.
Do you want to find a professional supplier of refractory products?
Do you want to find a stable and credible supplier?
Then please contact with us
Contact me:
Email:wp@cnjingganrefractory.com/sdwenping@163.com
TEL: 86-0533-4188518 / FAX: 86-0533-4188518
Rose:+86-13275332819(wechat/whatsapp number)
Our mission is to continually improve the quality of our High Alumina Ceramic Lining Bricks for Wear Resisting and services, and we ensure that we have the capability and capacity to do so. Our company's aim is to innovate into the future and serve customers responsibly. We sincerely expect exchange and cooperation with you.
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