Monolithic Refractories for Iron and Steel Industry - Ladle Shroud Long Nozzle Chinese Steelmaking
- 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:
Steelmaking long nozzle /refractory materials/refractory nozzles
steelmaking zircon nozzle Zr content 94-95% , and nozzle with metal shell ,
can protect nozzle burst.the casting temperature normally at 1520-1580 ℃.
our zirconia cores temperature resistance up to 2000℃, density is 4.2g/cm3 .
Steelmaking tundish nozzle zircon core contact face made a little big than other,effectively protect the nozzle using life.
tundish zirconia nozzles materials is alumina-zirconia-carbon .composed by Alumina-Carbon Shell, and zirconia core.
Graphic illustration:
1.Argon injection structure depending on customer specifications.
2.Ceramic glaze layer to prevent the material oxidation effectively.
3.Ceramic fiber blanket to prevent heat lost during casting.
4.High quality Al-C materials having high corrosion and thermal shock resistance.
5.High quality Zr-based composite to provide high corrosion resistance at the slag line.
6.Non-graphite based mased materials to meet the requirements of producing low carbon steel,silicon steel and high purity steel.
Manufacturing and QC
1.Raw materials blending
Independent raw materials blending center to assurestrict control of materials quality.
2.Shaping
Isostatic pressing technoloty,with as 1000 tons of pressure to assure the homogenous bulk density of each product.
3.Machining
To assure the uniform shape,dimension and dimension tolerance of each product.
4.X-ray defect inspection
To assure all products supplied to our customers without any defect and to prevent the un-countable feconomic loss for our customers.
5.Physical and chemistry analysis
To assure all products meet the physical and chemistry characteristics.
6.Packaging
The world-class for packaging to assure the safety transportation.
- Q: What are the recent developments in monolithic refractories for the iron and steel industry?
- In recent years, there have been several significant developments in monolithic refractories for the iron and steel industry. Monolithic refractories play a crucial role in the production of iron and steel, as they provide high-temperature resistance and insulation to the lining of furnaces and other equipment used in the industry. One of the key advancements in monolithic refractories is the development of advanced alumina-based castables. These castables offer superior thermal shock resistance, high strength, and excellent corrosion resistance, making them ideal for use in the iron and steel industry. They can withstand extreme temperatures and mechanical stresses, ensuring longer service life and reduced downtime for maintenance. Another notable development is the introduction of low-cement and ultra-low cement castables. These castables have a reduced cement content compared to traditional castables, resulting in improved refractory properties. They offer higher hot strength, reduced porosity, and enhanced resistance to slag and metal corrosion. This allows for increased productivity and efficiency in iron and steel manufacturing processes. Furthermore, there have been advancements in the use of insulating refractories in the iron and steel industry. Insulating castables and bricks are now being used to line ladles, tundishes, and other equipment, providing better insulation and energy efficiency. These materials help to reduce heat loss and improve thermal efficiency, resulting in cost savings and reduced environmental impact. Additionally, the development of monolithic refractories with improved installation techniques has been a significant development. Traditional brick lining methods require skilled labor and a longer installation time. However, with the introduction of gunning and shotcreting techniques, the installation process has become faster and more efficient. These techniques involve spraying refractory materials onto the lining surface, ensuring better adherence and reducing the risk of lining failure. Overall, the recent developments in monolithic refractories for the iron and steel industry have focused on improving thermal shock resistance, corrosion resistance, insulation properties, and installation techniques. These advancements have resulted in increased efficiency, reduced downtime, and improved productivity in the iron and steel manufacturing processes.
- Q: What are the challenges in recycling and disposing of monolithic refractories?
- In order to minimize the environmental impact and maximize resource efficiency, several challenges must be overcome when recycling and disposing of monolithic refractories. One significant challenge lies in the handling and transportation of these refractories due to their heavy and bulky nature. Since they are commonly used in high-temperature applications, dismantling and removing them from equipment can be difficult. The weight and size of monolithic refractories make transportation to recycling or disposal facilities a challenge, requiring specialized equipment and infrastructure. Another obstacle is the heterogeneity of monolithic refractories, which often contain various types of refractory materials, binders, and additives. This complexity makes it challenging to separate and categorize the different components for effective recycling. The lack of standardized recycling processes for monolithic refractories further complicates recycling efforts. Moreover, the high melting points of refractory materials used in monolithic refractories make conventional recycling methods, such as melting and remolding, energy-intensive and costly. It is necessary to explore and optimize alternative recycling methods like thermal treatment or chemical processing to make the recycling process more economically and environmentally viable. Proper disposal of monolithic refractories is also a challenge. If not recycled, these materials often end up in landfills, occupying valuable space and potentially releasing harmful substances into the environment. Landfilling refractories can also pose contamination risks if not managed correctly or if hazardous additives are present. To address these challenges, it is crucial to invest in research and development to create more efficient and cost-effective recycling technologies for monolithic refractories. Collaboration between manufacturers, recycling facilities, and regulatory bodies is also essential to establish guidelines and standards for recycling and disposal. Additionally, educating industries and end-users about the importance of recycling and the availability of recycling options can help increase the demand and feasibility of recycling monolithic refractories.
- Q: How do monolithic refractories contribute to the overall productivity of iron and steel production?
- Monolithic refractories play a crucial role in enhancing the overall productivity of iron and steel production. These refractories are widely used in various applications such as furnaces, ladles, and tundishes, offering excellent thermal stability and resistance to chemical attacks. By providing a durable lining, monolithic refractories ensure longer campaigns and reduced downtime for repairs and maintenance. This leads to increased production efficiency, reduced energy consumption, and improved product quality, ultimately contributing to the overall productivity of iron and steel production.
- Q: How are monolithic refractories used in the repair and maintenance of ladles and tundishes?
- The steel industry extensively utilizes monolithic refractories for the repair and maintenance of ladles and tundishes. These refractories are specifically designed to endure the extreme conditions encountered during the steelmaking process, including high temperatures, thermal shock, and chemical erosion. In the case of ladle repair, monolithic refractories are employed to line the inner walls. Ladles are exposed to intense heat and corrosive molten metal, and the refractory lining serves as insulation and protection against these harsh circumstances. Additionally, the lining helps to maintain the desired temperature of the molten metal, ensuring it remains in an appropriate state for processing. Regarding tundishes, monolithic refractories are used to line the bottom, sides, nozzle, and impact pad. Tundishes are responsible for distributing molten metal to multiple casting molds and are subject to high temperatures and thermal shocks. The refractory lining helps to sustain the necessary temperature and prevent any leakage of molten metal. During the repair and maintenance process, monolithic refractories are applied as dense, high-strength materials that are easy to shape and install. They can be formed into various shapes, such as bricks, castables, and gunning mixes, depending on the specific requirements of the ladle or tundish. These refractories are frequently applied using specialized techniques, such as gunning or casting, to ensure proper adhesion and durability. In addition to their thermal and chemical resistance properties, monolithic refractories also possess excellent mechanical strength and resistance to abrasion. This is particularly crucial in ladles and tundishes, as they experience constant wear and tear from the movement of molten metal and the handling of refractory materials during repair and maintenance. Overall, monolithic refractories play a vital role in the repair and maintenance of ladles and tundishes in the steel industry. They provide the necessary insulation, protection, and durability required to withstand the demanding conditions of steelmaking.
- Q: What are the key properties of shotcrete mixes used for monolithic refractory applications?
- The key properties of shotcrete mixes used for monolithic refractory applications include high strength, low porosity, high abrasion resistance, good thermal shock resistance, and excellent adhesion to the substrate. These properties ensure the durability and effectiveness of the shotcrete in withstanding high temperatures and harsh conditions in refractory applications.
- Q: How do monolithic refractories improve the efficiency of ladle and tundish purging furnaces?
- There are several ways in which monolithic refractories play a crucial role in enhancing the efficiency of ladle and tundish purging furnaces. To begin with, monolithic refractories possess outstanding thermal insulation properties, enabling them to retain heat within the furnace and minimize heat loss to the surroundings. This results in the furnaces being able to operate at higher temperatures, leading to improved efficiency. The higher temperatures facilitate better steel refining, faster heating and purging of the ladle and tundish, and overall increased productivity. Furthermore, monolithic refractories offer superior resistance to thermal shock. The continuous flow of molten metal in purging furnaces, particularly in ladles and tundishes, subjects the refractories to rapid heating and cooling cycles. Traditional refractories may crack or fail under such thermal cycling, resulting in reduced efficiency and additional downtime for repairs. However, monolithic refractories can withstand these extreme temperature changes, ensuring uninterrupted operation and minimizing the need for frequent maintenance. In addition, monolithic refractories exhibit excellent resistance to chemical attacks from molten metals and slag. During the purging process, ladles and tundishes come into contact with aggressive materials that can erode the refractory lining. Monolithic refractories are specifically designed to endure these harsh environments, preventing erosion and prolonging the lifespan of the furnaces. This resistance to chemical attacks not only enhances efficiency by minimizing refractory wear but also guarantees the production of high-quality steel with reduced impurities. Lastly, monolithic refractories offer great versatility in terms of installation and repair. Unlike traditional refractories that necessitate complex bricklaying techniques, monolithic refractories can be easily shaped and installed, enabling faster and more efficient lining construction. Additionally, monolithic refractories can be effortlessly repaired or patched, reducing downtime and ensuring continuous operation of the furnace. In conclusion, monolithic refractories significantly enhance the efficiency of ladle and tundish purging furnaces through their excellent thermal insulation, resistance to thermal shock and chemical attacks, as well as ease of installation and repair. These properties enable higher operating temperatures, reduced heat loss, increased productivity, and extended furnace lifespan, ultimately improving the overall efficiency and performance of the steelmaking process.
- Q: How do monolithic refractories withstand high temperatures and thermal shocks?
- Due to their unique composition and design, monolithic refractories possess the ability to endure high temperatures and thermal shocks. These refractories, referred to as "monolithic" due to their single-piece or structured form, can withstand extreme heat and sudden temperature changes commonly experienced in high-temperature applications. The utilization of high-quality raw materials is a key factor enabling monolithic refractories to withstand high temperatures. These materials are meticulously chosen for their heat and thermal stress resistance. Common components include silica, alumina, magnesia, and other refractory minerals with high melting points. Furthermore, the manufacturing process plays a vital role in enhancing the thermal resistance of monolithic refractories. The raw materials are blended with binders, such as clay or cement, to create a homogeneous mixture. This mixture is then shaped and installed in its final position, either through pouring or gunning, depending on the application. The binder ensures that the refractory maintains its shape and integrity during thermal cycling. In addition, monolithic refractories exhibit excellent thermal conductivity and low thermal expansion properties. This enables efficient heat transfer and dissipation, minimizing the risk of thermal stress and cracking. The low thermal expansion also reduces the likelihood of spalling or delamination, which is crucial for withstanding thermal shocks. Another contributing factor to the high-temperature resistance of monolithic refractories is their ability to form a protective layer or slag on the surface. This layer acts as a barrier, preventing direct contact between the refractory and corrosive materials or aggressive atmospheres. It significantly improves the refractory's longevity and resistance to thermal shocks. Overall, the combination of high-quality raw materials, meticulous manufacturing techniques, and advantageous thermal properties allows monolithic refractories to endure high temperatures and thermal shocks. These refractories find extensive use in various industries, including steel, cement, glass, and petrochemical, as reliable linings in furnaces, kilns, and other high-temperature equipment.
- Q: Can monolithic refractories be used for the lining of blast furnace runners and troughs?
- Yes, monolithic refractories can be used for the lining of blast furnace runners and troughs. Monolithic refractories are versatile and can be formed into any shape or size, making them suitable for lining complex structures such as blast furnace runners and troughs. Additionally, monolithic refractories offer excellent thermal shock resistance and high mechanical strength, which are essential properties for withstanding the extreme conditions inside a blast furnace.
- Q: How do monolithic refractories withstand thermal cycling in the iron and steel industry?
- Monolithic refractories withstand thermal cycling in the iron and steel industry through their unique properties and composition. These refractories are made from a single piece or mass, which eliminates joints and weak points that could be susceptible to thermal stress. Additionally, their high thermal conductivity and low thermal expansion help them absorb and distribute heat evenly, reducing the risk of cracking or damage during rapid temperature changes. The use of advanced bonding agents further enhances their durability and resistance to thermal cycling, allowing them to withstand the extreme conditions of the iron and steel industry.
- Q: What are the specific requirements of monolithic refractories for soaking pit applications?
- Monolithic refractories used in soaking pit applications need to possess certain specific requirements. They should be able to withstand high temperatures, typically above 1500°C, without losing their structural integrity. They should also exhibit excellent thermal shock resistance to withstand rapid temperature fluctuations during the heating and cooling cycles. Additionally, they must have good resistance to chemical erosion from molten metals and slag present in the soaking pit. Other desirable properties include low porosity, high density, and good mechanical strength to ensure long-term durability and resistance to wear and tear.
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Monolithic Refractories for Iron and Steel Industry - Ladle Shroud Long Nozzle Chinese Steelmaking
- 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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