Monoblock Stopper for continuous casting
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 set
- Supply Capability:
- 50000 set/month
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Description:
1.excellent thermal shock resistance;
2.excellent mechanical properties and resistance to vibration
3. long service life
Monoblock stopper is one of the important steel flow regulation components, and to meet the particularly demanding operating conditions, we manufacture varieties of stoppers with customised specifications to suit the different designs of our customers' tundishes
To facilitate customisation, during our manufacturing process, we apply different mixtures of aluminia or magnesia to the nose of our stoppers for our customers, enabling them to cast various types of steel.
The characteristics of the stopper are as follows:
PARMETER | Major portion | Stopper head | Stopper head | Stopper head |
F.C+SiC (%) | 20 | 10 | 20 | 12 |
Al2O3 (%) | 68 | 80 | ||
ZrO2 (%) | 72 | |||
MgO (%) | 75 | |||
apparent porosity(%) | 15 | 14 | 16 | 15 |
bulk density(g/cm3) | 2.35 | 2.80 | 3.30 | 2.70 |
CCS (Mpa) | 27 | 26 | 27 | 25 |
MOR (Mpa) | 8.0 | 8.0 | 9.0 | 8.0 |
The stopper head is the key part. Standard materials are：
Alumina carbon suitable for ordinary steel flow control
Zirconium carbon suitable for special alloy steel flow control
Magnesia carbon suitable for Ca-treatment steel flow control
- Q:How do monolithic refractories contribute to the efficiency of iron and steel production?
- Monolithic refractories play a crucial role in improving the efficiency of iron and steel production by providing superior thermal insulation and resistance to high temperatures, resulting in reduced heat loss and improved energy efficiency. Additionally, these refractories offer excellent mechanical strength and chemical resistance, enabling them to withstand the harsh conditions within the production process, leading to increased durability and extended service life. Their ability to be easily shaped and installed also facilitates faster maintenance and repair, minimizing downtime and enhancing overall operational efficiency in the iron and steel industry.
- Q:What are the considerations for repairing and patching monolithic refractories?
- Considerations for repairing and patching monolithic refractories include assessing the extent of the damage, identifying the cause of the damage, selecting the appropriate repair material, ensuring proper bonding and curing, and following manufacturer's instructions and recommended procedures. Additionally, factors such as temperature, chemical exposure, and mechanical stress should be taken into account to ensure the repaired refractory maintains its performance and longevity.
- Q:What are the environmental considerations associated with monolithic refractories?
- Monolithic refractories, utilized in various high-temperature applications, pose several environmental concerns that must be taken into account. Firstly, the production of monolithic refractories necessitates the utilization of raw materials such as clay, silica, and alumina, which are frequently extracted from the earth, resulting in habitat destruction, soil erosion, and water pollution. Furthermore, the manufacturing process of monolithic refractories commonly involves considerable energy consumption and the emission of greenhouse gases. The firing of refractory materials necessitates high temperatures, often achieved through the combustion of fossil fuels, contributing to carbon dioxide emissions and climate change. These emissions have broad environmental consequences, including air pollution, acid rain, and ozone layer depletion. Additionally, the disposal of monolithic refractories at the end of their useful life can present environmental challenges. Although monolithic refractories are highly durable and long-lasting, there may come a time when replacement or repair is necessary. The disposal of refractory waste can be problematic as it often contains hazardous substances such as chromium, lead, and asbestos. Inadequate disposal methods can lead to contamination of soil and water, posing risks to both human health and the environment. To address these environmental concerns, efforts are underway to develop more sustainable refractory materials and manufacturing processes. For instance, alternative raw materials like recycled refractory materials or industrial by-products can be employed to decrease the environmental impact of mining. Moreover, the adoption of more energy-efficient manufacturing techniques, such as utilizing renewable energy sources or implementing advanced firing technologies, can help minimize greenhouse gas emissions. In conclusion, the environmental considerations associated with monolithic refractories encompass habitat destruction, energy consumption, greenhouse gas emissions, and waste disposal. Prioritizing sustainability and implementing measures to mitigate these environmental impacts, such as using alternative raw materials, enhancing manufacturing processes, and endorsing responsible waste management practices, are imperative for the refractory industry.
- Q:How do monolithic refractories withstand the thermal cycling in coke oven applications?
- Monolithic refractories are specifically designed to withstand the harsh conditions of thermal cycling in coke oven applications. Thermal cycling refers to the repetitive heating and cooling cycles that occur in these high-temperature environments. One of the key factors that enables monolithic refractories to withstand thermal cycling is their composition. They are typically made from a combination of different refractory materials, such as high-alumina, silica, and magnesia, which provide excellent thermal shock resistance. These materials have low thermal conductivity and high thermal expansion properties, allowing them to expand and contract without cracking or spalling under extreme temperature changes. Moreover, monolithic refractories have excellent bonding and adhesion properties, allowing them to form a strong and cohesive structure. This ensures that they can withstand the mechanical stresses caused by the thermal cycling process. Additionally, monolithic refractories can be installed in place through various techniques, such as gunning, casting, or ramming, which further enhances their resistance to thermal cycling. Furthermore, the presence of specialized additives and bonding agents in monolithic refractories improves their resistance to thermal cycling. These additives can enhance the refractory's ability to absorb thermal shock and minimize cracking, thus increasing its durability and longevity in coke oven applications. Overall, monolithic refractories' ability to withstand thermal cycling in coke oven applications can be attributed to their carefully formulated composition, strong bonding properties, and the incorporation of specialized additives. These characteristics make them highly reliable and suitable for the extreme temperature fluctuations experienced in coke oven operations.
- Q:What are monolithic refractories and how are they different from other refractory materials?
- Monolithic refractories are a type of refractory material that is produced and applied in a single, unified form. Unlike other refractory materials, such as bricks or tiles, monolithic refractories are not pre-formed into specific shapes or sizes. Instead, they are generally composed of a mix of aggregates, binders, and additives, which are then installed in place and cured to form a solid, dense structure. One key difference between monolithic refractories and other refractory materials is their versatility and ease of installation. Traditional refractory bricks or tiles require skilled labor and careful assembly to create a lining or structure. Monolithic refractories, on the other hand, can be poured, sprayed, or gunned into place, allowing for a much faster and more efficient installation process. This makes them particularly suitable for complex shapes or areas that are difficult to access. Another difference lies in the physical properties of monolithic refractories. While bricks and tiles are typically characterized by their high mechanical strength and resistance to thermal shock, monolithic refractories can be tailored to exhibit a wide range of properties. They can be engineered to have excellent thermal insulation, superior corrosion resistance, or enhanced abrasion resistance, depending on the specific application requirements. This flexibility makes monolithic refractories suitable for a variety of industries, including steel, cement, glass, and petrochemical. Furthermore, monolithic refractories have the advantage of being able to expand and contract with temperature changes, unlike rigid brick structures. This thermal flexibility helps to minimize cracking and damage caused by thermal cycling, prolonging the lifespan of the refractory lining. Additionally, monolithic refractories offer better refractory integrity and reduced joint failure, as there are no seams or weak points that can be susceptible to thermal stresses. In summary, monolithic refractories are a versatile and convenient type of refractory material that can be customized to meet specific application requirements. Their ease of installation, thermal flexibility, and tailor-made properties make them distinct from other refractory materials such as bricks or tiles.
- Q:How are monolithic refractories different from conventional refractories?
- Monolithic refractories are different from conventional refractories in that they are composed of a single, continuous structure, whereas conventional refractories are made up of multiple individual bricks or shapes. Monolithic refractories offer greater flexibility in terms of installation, as they can be easily shaped and molded to fit various applications. Additionally, monolithic refractories usually have better thermal shock resistance and are more resistant to cracking, making them more durable and long-lasting compared to conventional refractories.
- Q:What are the quality control measures for monolithic refractories in the iron and steel industry?
- To ensure the efficiency and safety of the production process in the iron and steel industry, it is crucial to implement quality control measures for monolithic refractories. These measures encompass a range of inspections and tests throughout the manufacturing and installation stages. To begin with, rigorous testing is conducted on the raw materials used for monolithic refractories. This involves analyzing the chemical composition, particle size distribution, and impurity content. These tests are essential to ensure that the ingredients meet the required specifications and are suitable for the intended application. During the production process, the focus of quality control measures lies in monitoring the mixing and blending of the materials. This ensures that a homogeneous mixture is achieved, preventing any inconsistencies in the final product. Additionally, the density and viscosity of the refractory castables or plastics are checked to maintain the desired physical properties. Once the monolithic refractories are manufactured, they undergo several performance tests. These tests involve determining properties such as cold crushing strength, modulus of rupture, and thermal conductivity. These characteristics are crucial in ensuring that the refractories can withstand the extreme temperatures and mechanical stress present in the iron and steel industry. Aside from laboratory testing, quality control measures also involve on-site inspections during installation. This includes verifying the correct application techniques, such as proper vibration, curing, and drying procedures. It is of utmost importance to ensure that the monolithic refractories are applied correctly to achieve optimal performance and longevity. Furthermore, regular sampling and monitoring of the refractories' performance are carried out during operation. This allows for the early detection of any signs of degradation or wear, enabling proactive maintenance and replacement before any significant issues arise. In conclusion, the quality control measures for monolithic refractories in the iron and steel industry encompass comprehensive testing, monitoring, and inspection procedures. These measures are implemented to guarantee the reliability, durability, and efficiency of the refractories, ultimately contributing to the smooth operation of the iron and steel production processes.
- Q:How do monolithic refractories prevent thermal radiation in the iron and steel industry?
- Monolithic refractories play a vital role in the iron and steel industry by preventing thermal radiation. Thermal radiation is the transfer of heat energy through electromagnetic waves and poses a significant challenge due to the industry's high temperatures. Monolithic refractories are refractory materials that come in a single piece and are designed with exceptional thermal insulation properties. They have low thermal conductivity, meaning they do not conduct heat well. This quality allows them to act as a barrier against thermal radiation. In the iron and steel industry, monolithic refractories are commonly used as linings in furnaces, ladles, and other equipment exposed to extreme temperatures. These linings act as protective layers, preventing heat from escaping and reducing the emission of thermal radiation. Furthermore, monolithic refractories have high emissivity, which means they can absorb and re-emit thermal radiation effectively. This characteristic enables them to capture and contain heat within the equipment, minimizing the amount of radiation that escapes into the surroundings. By preventing thermal radiation, monolithic refractories help maintain the desired temperatures during the iron and steel production process. This is crucial for achieving efficient and controlled operations, as well as ensuring the quality of the final products. Moreover, the use of monolithic refractories in the iron and steel industry also contributes to energy savings. By reducing heat loss through thermal radiation, less energy is needed to maintain the desired temperatures, resulting in lower energy consumption and cost savings. In conclusion, monolithic refractories are indispensable for preventing thermal radiation in the iron and steel industry. Their excellent thermal insulation properties, low thermal conductivity, and high emissivity make them effective barriers against heat transfer through radiation. By minimizing heat loss and ensuring controlled temperatures, monolithic refractories contribute to efficient operations, high-quality products, and energy savings.
- Q:How do monolithic refractories withstand the chemical attacks in aluminum furnace applications?
- Monolithic refractories are able to withstand chemical attacks in aluminum furnace applications due to their unique composition and properties. These materials are designed to have high resistance to the corrosive effects of molten aluminum and other chemicals present in the furnace environment. Firstly, monolithic refractories are made from a combination of different minerals, such as alumina, silicon carbide, and zirconia, which have high melting points and excellent chemical stability. These minerals act as a barrier between the corrosive substances and the underlying structure, preventing them from penetrating or damaging the refractory lining. Additionally, monolithic refractories are typically formulated with high levels of alumina, which provides them with exceptional resistance to chemical attacks. Alumina has a strong affinity for oxygen, forming a stable oxide layer on the surface of the refractory material, acting as a protective barrier against corrosive elements. This oxide layer also helps to reduce the rate of penetration of corrosive substances into the refractory lining. Moreover, monolithic refractories are often designed with a dense microstructure and low porosity. This ensures that there are fewer pathways for the corrosive substances to penetrate and attack the refractory material. The denser the material, the less susceptible it is to chemical attacks. Furthermore, monolithic refractories can be further enhanced by adding additives or binders that improve their resistance to chemical attacks. These additives can include various organic or inorganic materials that provide additional protection against corrosive substances. Overall, monolithic refractories are specifically engineered to withstand the harsh conditions of aluminum furnace applications. Their unique composition, high alumina content, dense microstructure, and resistance-enhancing additives all contribute to their ability to withstand chemical attacks and prolong the lifespan of the refractory lining in aluminum furnaces.
- Q:What are the main applications of monolithic refractories in the iron and steel industry?
- Monolithic refractories are widely used in the iron and steel industry for various applications such as lining furnaces, ladles, and tundishes. They provide excellent thermal insulation, high resistance to thermal shock, and resistance to chemical reactions with molten metal. These refractories help in maintaining consistent temperature and reducing heat loss, thereby ensuring efficient and cost-effective production processes in the iron and steel industry.
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Monoblock Stopper for continuous casting
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 set
- Supply Capability:
- 50000 set/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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