Monolithic Refractories for Iron and Steel Industry - Lightweight Castable Refractory Castable by Casting
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 20000 kg
- Supply Capability:
- 10000000000 kg/month
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General Information of Lightweight castable
Lightweight castable is made from lightweight aggregate of lightweight ceramic grains and sand grog and floating beads, mixed with binding agent of aluminate cement and superfine powder, having different aggregates of different materials to meet the design requirements.
Features of Lightweight Castable
◆High strength
◆Good wear resistance
◆Excellent heat-insulation
◆Small reheating liner change
Application of Lightweight Castable
Chimney linings and heat-insulating
Wear proof layers of the
Technical Data of Lightweight Castable
| Technical Data of Lightweight Castable | ||||||
| Physical Properties | LC-1.4 | LC-1.2 | LC-1.0 | LC-0.9 | LC-0.8 | |
| Classification Temperature | ℃ | 1200 | 1100 | 1100 | 1000 | 1000 |
| ℉ | 2190 | 2010 | 2010 | 1830 | 1830 | |
| Buk Densiy(g/cm) | 110℃×24h | 1.4 | 1.2 | 1.0 | 0.9 | 0.8 |
| 815cx3h | 1.3 | 1.1 | 0.9 | 0.8 | 0.7 | |
| Compressive Strength (Mpa) | 110℃×24h | 12 | 10 | 7 | 4.5 | 4 |
| 815cx3h | 10 | 8 | 6 | 4 | 3 | |
| Modulus of Rupture(Mpa) | 110℃×24h | 3 | 2 | 1.5 | 1.0 | 0.8 |
| 815cx3h | 2.5 | 1.5 | 1.0 | 0.8 | 0.5 | |
| Permanent Liner Change (%) | 815℃×3h | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Thermal Conductivity(W/m.k) | 350℃ | 0.35 | 0.30 | 0.25 | 0.23 | 0.21 |
Photo of Lightweight Castable
- Q: What are the main factors affecting the thermal expansion of monolithic refractories?
- The main factors affecting the thermal expansion of monolithic refractories include the chemical composition of the refractory material, the temperature at which it is exposed, and the rate at which it is heated or cooled. Other factors such as the presence of impurities, the porosity of the material, and the type of bonding agents used can also influence the thermal expansion behavior of monolithic refractories.
- Q: How does the composition of monolithic refractories impact their performance?
- Determining the performance of monolithic refractories is heavily influenced by their composition. These refractories are unshaped materials used to line furnaces, kilns, and other high-temperature equipment. Their installation convenience and ability to conform to complex shapes make them preferable over traditional brick and mortar refractories. Various components, such as aggregates, binders, and additives, constitute the composition of monolithic refractories. These constituents significantly impact the physical, mechanical, and thermal properties of the refractory material. Aggregates, which are the primary component, provide structural integrity to monolithic refractories. Alumina, silica, magnesia, and carbon are among the materials used for aggregates. Each aggregate possesses unique properties that determine the refractory's resistance to heat, chemical attack, and mechanical stress. For instance, alumina aggregates offer excellent resistance to high temperatures and chemical corrosion, while carbon-based aggregates have high thermal conductivity and are preferred for this reason. The addition of binders enhances the strength and cohesion of the refractory. Common binders include clay, calcium aluminate cement, and colloidal silica. The choice of binder depends on the desired strength, workability, and setting time of the refractory material. Additives are incorporated into the composition to improve specific properties. They can enhance the refractory's resistance to thermal shock, abrasion, or chemical attack. Additives like zirconium oxide, silicon carbide, and graphite are frequently used to enhance the performance of monolithic refractories in specific applications. The proper combination and proportion of these constituents are vital for achieving the desired performance of monolithic refractories. The composition affects the refractory's thermal conductivity, thermal expansion, density, porosity, and chemical resistance. For example, a higher alumina content improves resistance to high temperatures and chemical corrosion, while a higher silica content enhances insulation properties. In conclusion, the performance of monolithic refractories is significantly impacted by their composition. Careful consideration must be given to the selection of aggregates, binders, and additives to achieve desired properties and ensure optimal performance in specific high-temperature applications.
- Q: How do monolithic refractories help in enhancing the durability of iron and steel furnaces?
- Monolithic refractories play a crucial role in enhancing the durability of iron and steel furnaces due to their unique properties and characteristics. These materials are designed to withstand extremely high temperatures and harsh conditions, making them ideal for lining the furnaces. Firstly, monolithic refractories have excellent thermal resistance, meaning they can withstand extreme heat without losing their structural integrity. Iron and steel furnaces operate at incredibly high temperatures, sometimes exceeding 2,000 degrees Celsius. Regular bricks or other materials would not be able to withstand such temperatures, leading to frequent repairs and maintenance. Monolithic refractories, on the other hand, can handle these extreme temperatures without deteriorating, thus enhancing the durability of the furnaces. Secondly, monolithic refractories have high resistance to chemical attack. In iron and steel production, the materials being processed often contain various impurities and aggressive chemicals. These substances can react with the furnace lining and cause corrosion or erosion over time. However, monolithic refractories have a high resistance to chemical attack, ensuring that the lining remains intact and durable even in the presence of corrosive elements. Furthermore, monolithic refractories have excellent mechanical strength and abrasion resistance. Iron and steel furnaces experience mechanical stress and abrasion due to the movement of raw materials, the stirring of molten metal, and the tapping of the furnace. The lining needs to withstand this constant wear and tear without breaking or cracking. Monolithic refractories have superior mechanical strength and can resist abrasion, ensuring that the furnace remains durable and functional for a longer period. Additionally, monolithic refractories offer exceptional thermal shock resistance. The lining of iron and steel furnaces is subjected to rapid temperature changes during various stages of production. These temperature fluctuations can cause thermal stress and lead to cracking or spalling of the lining. However, monolithic refractories have low thermal conductivity and can withstand thermal shock, preventing any damage to the furnace lining and enhancing its durability. In summary, monolithic refractories help enhance the durability of iron and steel furnaces by providing excellent thermal resistance, high resistance to chemical attack, superior mechanical strength and abrasion resistance, as well as exceptional thermal shock resistance. These properties ensure that the furnace lining remains intact, withstands extreme temperatures, and resists the corrosive and abrasive nature of the materials being processed, ultimately prolonging the life of the furnace and reducing the need for frequent repairs or replacements.
- Q: What are the main causes of monolithic refractory failure in the iron and steel industry?
- There are several main causes of monolithic refractory failure in the iron and steel industry. One of the primary causes is thermal cycling. The extreme temperatures experienced in iron and steel manufacturing processes, such as melting, casting, and heat treating, subject the refractory lining to significant thermal stress. This repeated expansion and contraction of the material can lead to cracking, spalling, or even complete disintegration of the refractory. Another common cause of failure is chemical attack. The iron and steel industry involves the use of various chemicals, including molten metal, slag, and gases, which can react with the refractory lining. This chemical interaction can cause erosion, corrosion, or chemical decomposition of the refractory material, leading to its failure over time. Mechanical stress is also a significant factor in monolithic refractory failure. The heavy machinery and equipment used in iron and steel production can generate vibrations, shocks, and impacts that can weaken or damage the refractory lining. Additionally, improper installation or design can result in mechanical stress concentration points, making the refractory more susceptible to failure. Furthermore, improper maintenance and operational practices can contribute to refractory failure. Inadequate cooling or heating procedures, improper drying and curing of the refractory, and insufficient cleaning and inspection can all impact the longevity and performance of the material. Lack of regular maintenance and timely repairs can exacerbate small issues, leading to more significant failures over time. Lastly, the choice of refractory material and its quality can play a significant role in failure. Selecting an inappropriate refractory for the specific application or using low-quality materials can result in premature failure. It is crucial to consider factors such as temperature range, chemical exposure, and mechanical stress when choosing the refractory lining to ensure its suitability and durability in the iron and steel industry. In summary, the main causes of monolithic refractory failure in the iron and steel industry are thermal cycling, chemical attack, mechanical stress, improper maintenance and operational practices, and the choice and quality of refractory material. Addressing these factors through proper installation, regular maintenance, and careful material selection can help mitigate refractory failures and improve the overall efficiency and productivity of iron and steel production processes.
- Q: How are monolithic refractories installed and repaired in iron and steel plants?
- Monolithic refractories are essential components in iron and steel plants, as they provide high-temperature resistance and insulation. They are commonly used in various applications, such as lining furnaces, ladles, and other equipment that come into contact with molten metal. The installation of monolithic refractories in iron and steel plants typically involves several steps. First, the surface that will receive the refractory material must be prepared by removing any existing refractories or contaminants. This can be done through mechanical methods, such as sandblasting, or chemical cleaning processes. Next, the monolithic refractory material is mixed with water or a suitable binder to form a workable consistency. This mixture is then applied to the prepared surface using various techniques, such as gunning, casting, or troweling. Gunning involves using a high-pressure gun to spray the refractory material onto the surface, while casting involves pouring the mixture into a mold. Troweling is a manual method that involves spreading the refractory material with a trowel. Once the refractory material is applied, it needs to be properly cured or dried. This is usually achieved by allowing the material to air dry or by using controlled heating. The curing process is crucial to ensure the refractory material develops the desired properties, such as strength and resistance to thermal shock. In terms of repairs, monolithic refractories in iron and steel plants can deteriorate over time due to the harsh operating conditions. When repairs are needed, damaged or worn-out areas of the refractory lining must be identified. This can be done through visual inspection or non-destructive testing techniques. The repair process typically involves removing the damaged refractory material by chipping, drilling, or cutting. The surface is then prepared as mentioned earlier, and a new batch of monolithic refractory material is applied to restore the lining. The repair material should be compatible with the existing lining and provide similar properties to ensure the overall integrity of the refractory structure. It is important to note that the installation and repair of monolithic refractories in iron and steel plants require skilled personnel with knowledge of refractory materials and installation techniques. Additionally, proper safety measures should be followed to protect workers from potential hazards, such as exposure to high temperatures, dust, and chemicals. Regular inspection and maintenance are also crucial to identify any potential issues early on and prevent major failures that could impact production and safety.
- Q: Can monolithic refractories be used in electric arc furnaces and induction furnaces?
- Yes, monolithic refractories can be used in both electric arc furnaces and induction furnaces. Monolithic refractories are versatile and can withstand the high temperatures and thermal shocks generated in these types of furnaces. They are often preferred due to their ease of installation, improved energy efficiency, and suitability for various furnace lining applications.
- Q: How do monolithic refractories contribute to the safety of iron and steel operations?
- Enhancing the safety of iron and steel operations is a crucial role played by monolithic refractories. Made of a single, continuous material, these refractories offer numerous benefits that contribute to overall safety. To begin with, they provide exceptional thermal insulation, designed to withstand high temperatures and prevent heat transfer to the surrounding environment. This insulation property ensures a safe working temperature, reducing the risk of burns or heat-related injuries for operators. Additionally, monolithic refractories exhibit high resistance to chemical attack. In iron and steel operations, corrosive and hazardous substances like chemicals and molten metals are utilized. By acting as lining materials, monolithic refractories create a protective barrier that resists the corrosive effects of these substances, preventing leaks and potential accidents. Moreover, monolithic refractories possess remarkable mechanical strength, enabling them to endure the mechanical stress exerted by heavy machinery and equipment involved in steelmaking processes. This resilience helps maintain their integrity, minimizing the risk of sudden failure or collapse, and reducing the possibility of accidents and injuries caused by falling debris. Furthermore, monolithic refractories offer easy installation and repair options. They can be applied as castable or gunning materials, allowing for quick and efficient lining of furnaces, ladles, and other equipment. This ease of installation minimizes downtime during maintenance or repairs, mitigating the risk of accidents resulting from delayed or prolonged shutdowns. In conclusion, monolithic refractories contribute to the safety of iron and steel operations through their exceptional thermal insulation, resistance to chemical attack, ability to withstand mechanical stress, and ease of installation and repair. By providing a protective barrier, these refractories help prevent injuries, maintain a safe working environment, and minimize potential hazards associated with high temperatures, corrosive substances, and mechanical failures.
- Q: How do monolithic refractories help in enhancing the durability of iron and steel equipment?
- Monolithic refractories play a crucial role in enhancing the durability of iron and steel equipment by providing high resistance to extreme temperatures, chemical attack, and mechanical wear. These refractories are composed of a single, homogeneous material, making them more robust and reliable compared to traditional brick or castable refractories. The high-temperature resistance of monolithic refractories allows them to withstand the extreme heat generated in iron and steel manufacturing processes, such as melting, casting, and forging. They can withstand temperatures exceeding 3000°F (1650°C) without losing their structural integrity, preventing premature failure of the equipment. This thermal resistance helps to maintain the shape and structure of the refractory lining, ensuring the efficient and consistent performance of the equipment. In addition to high heat resistance, monolithic refractories also exhibit excellent chemical resistance. Iron and steel equipment often comes into contact with corrosive substances, such as molten metal, slag, and various chemical compounds. The monolithic refractories' ability to resist chemical attack prevents degradation and erosion of the equipment's lining, extending its lifespan. Furthermore, monolithic refractories provide exceptional mechanical strength and wear resistance. The continuous exposure to abrasive materials, physical impacts, and mechanical stress can cause severe damage to the equipment. However, the dense and compact structure of monolithic refractories makes them highly resistant to mechanical wear, minimizing the risk of erosion and spalling. The flexibility and versatility of monolithic refractories are also advantageous in enhancing the durability of iron and steel equipment. They can be easily molded, shaped, and installed in complex geometries, ensuring a tight and precise fit. This eliminates the formation of gaps or weak points, which could lead to thermal or chemical leakage, reducing the risk of equipment failure. Overall, the use of monolithic refractories in iron and steel equipment significantly enhances its durability by providing exceptional resistance to high temperatures, chemical attack, and mechanical wear. These refractories ensure the longevity and reliability of the equipment, resulting in improved operational efficiency and cost-effectiveness in the iron and steel industry.
- Q: How do monolithic refractories withstand the mechanical impacts in ladle lip applications?
- Monolithic refractories are able to withstand the mechanical impacts in ladle lip applications due to their unique properties and composition. Firstly, monolithic refractories are made from a single, homogenous material, which provides them with a high level of structural integrity. This means that they are less vulnerable to cracking or breaking when subjected to mechanical impacts. Additionally, monolithic refractories often contain additives such as fibers or aggregates, which further enhance their resistance to mechanical stresses. These additives help to distribute the forces applied to the refractory material, reducing the concentration of stress points and increasing its overall durability. Furthermore, the application process of monolithic refractories allows for a seamless and continuous lining, eliminating the presence of joints or weak points that are susceptible to mechanical damage. This ensures a more uniform distribution of the impacts and enhances the material's ability to withstand them. Moreover, monolithic refractories can be designed with specific compositions and formulations that are tailored to resist mechanical impacts. Various binders and additives can be incorporated to enhance the material's toughness, impact resistance, and overall mechanical strength. Finally, the selection of monolithic refractories for ladle lip applications also takes into consideration the operating conditions, such as temperature and chemical exposure. By choosing refractories that are suitable for these conditions, their mechanical properties can be optimized to withstand the specific challenges posed by ladle lip applications. In summary, monolithic refractories are able to withstand mechanical impacts in ladle lip applications due to their homogenous structure, the inclusion of additives, the seamless application process, and the ability to customize their composition. These factors contribute to their ability to resist cracking, breaking, and other forms of mechanical damage, ensuring their longevity and effectiveness in ladle lip applications.
- Q: How do monolithic refractories contribute to energy efficiency in iron and steel manufacturing?
- Monolithic refractories contribute to energy efficiency in iron and steel manufacturing through their superior insulation properties and ability to withstand high temperatures. These refractories minimize heat loss, reducing the energy required for heating and maintaining the desired temperature in the manufacturing process. Additionally, their durability and resistance to thermal shock help to extend the lifespan of furnaces and other equipment, reducing the need for frequent repairs or replacements, further enhancing energy efficiency.
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Monolithic Refractories for Iron and Steel Industry - Lightweight Castable Refractory Castable by Casting
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 20000 kg
- Supply Capability:
- 10000000000 kg/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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