Monolithic Refractories for Iron and Steel Industry - Calcined Petroleum Coke from Shanghai
- Ref Price:
-
- Loading Port:
- Shekou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t
- Supply Capability:
- 1000 m.t/month
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Factory Background
The factory is majorly running and operating carbon additive (pitch coke, calcined petroleum coke and anthracite), low nitrogen carbon additive, and brake pad making material. Company is the long term supplier of Sinosteel Corporation, Shanghai Carbon Corporation, the plant of SGL Group the Carbon Company in China and some largest special carbon products producing plants.
YUAI also supplies huge amout of high quality carbon additive and graphite carbon additive to steel plants, foundries and ferrotungsten plants. YUAI has been assigned by BAO STEEL as the only organization for processing pitch coke for export purpose. The group’s major products are constantly exported to Japan, Korea, Malaysia, South East Asia countries, Europe and America, which receive praises by our consumers.
The group has invested numbers of calcinators in Anhui China to ensure the capability of producing and processing huge amount of carbon additive. Further investment is on process. According to the orders from customers, YUAI is able to processing and providing different specifications of carbon additive and other products. To provide best quality of products and to offer customers most satisfied service is YUAI’s operating objectives.
Calcined Petroleum Coke
FC:98.5%min,
S:0.5%max
A:0.8%max
V:0.7%max
Mositure:0.5%max
Size:1-5mm
This product is mainly used in steel-making and foundry. Calcined Petroleum Coke
Calcined Petroleum Coke comes from delayed coke which extracted from oil refinery. Although Calcined Petroleum Coke contains a little bit higher level of sulfur and nitrogen than pitch coke, the price advantage still makes it widely used during steel-making and founding as a kind of carbon additive/carburant.
Packaging & Delivery
Packaging Detail:25kg paper bag into 1t weaving bag 5kg, 10kg and 20kg weaving bag into 1t weaving bag 25kg weaving bag put on pallet covered with entanglement wrap product direct into packing bag 25kg paper bag put on pallet covered with entanglement Wrap 25kg weaving bag into 1t weaving bag.
Delivery Details: 7 days
- Q: What are the advantages of using insulating castables in the iron and steel industry?
- The advantages of using insulating castables in the iron and steel industry are numerous. Firstly, insulating castables have excellent thermal insulation properties, which help to reduce heat loss during the manufacturing process. This leads to increased energy efficiency and cost savings for the industry. Additionally, insulating castables have a low thermal conductivity, meaning they can withstand high temperatures without transferring excessive heat. This is crucial in the iron and steel industry, where temperatures can reach extremely high levels. By using insulating castables, the industry can ensure the longevity and durability of its equipment and structures. Furthermore, insulating castables have good resistance to thermal shock, meaning they can withstand rapid temperature changes without cracking or breaking. This is particularly beneficial in the iron and steel industry, where the heating and cooling processes are frequent and intense. Lastly, insulating castables have a low density, making them lightweight and easier to handle and install. This not only saves time and effort during installation but also reduces the structural load on equipment and structures. Overall, the use of insulating castables in the iron and steel industry offers advantages such as improved energy efficiency, enhanced durability, resistance to thermal shock, and ease of installation.
- Q: How are monolithic refractories repaired or replaced in iron and steel facilities?
- Due to their superior thermal and mechanical properties, monolithic refractories are widely used in iron and steel facilities. These refractories are designed to withstand high temperatures, thermal shocks, and chemical attacks. However, over time, they may experience wear and tear, leading to the need for repair or replacement. The process of repairing or replacing monolithic refractories in iron and steel facilities typically involves the following steps: 1. Inspection: A comprehensive inspection is performed to identify areas that require repair or replacement. This inspection may include visual examination, thermal imaging, or other non-destructive testing techniques to assess the extent of damage. 2. Removal of damaged material: The damaged monolithic refractory material is carefully extracted using appropriate tools and equipment. This step ensures proper adhesion of the new refractory material to the substrate. 3. Surface preparation: The substrate or lining surface is prepared to improve the bonding between the new refractory material and the existing structure. This may involve cleaning, grinding, or shot blasting to remove loose particles, contaminants, and any remaining damaged material. 4. Selection of repair material: Depending on specific requirements and operating conditions, a suitable repair material is chosen. This may involve selecting a similar monolithic refractory material or a specialized repair product designed for the application. 5. Mixing and installation: The repair material is mixed according to the manufacturer's instructions, ensuring the right consistency and workability. It is then applied to the prepared surface using various techniques such as troweling, spraying, or casting. Attention is given to achieve the desired thickness and proper consolidation of the repair material. 6. Curing and drying: After installation, the repaired refractory material is allowed to cure and dry according to the manufacturer's recommendations. This step is crucial to achieve the desired strength and thermal properties of the refractory lining. 7. Quality control: Once the repair or replacement is complete, quality control measures are implemented to ensure the integrity and effectiveness of the repaired or refurbished refractory lining. This may involve conducting tests such as thermal conductivity measurements, density checks, or visual inspections. It is important to note that the process of repairing or replacing monolithic refractories may vary depending on the specific requirements and conditions of each iron and steel facility. Additionally, it is advisable to consult with refractory experts or manufacturers to ensure the correct selection of materials and proper execution of the repair or replacement procedure.
- Q: How do monolithic refractories withstand the alkali attacks in cement kiln applications?
- Monolithic refractories are able to withstand alkali attacks in cement kiln applications due to their unique composition and structure. These refractories are made from a single material, which allows for a more uniform and dense structure compared to traditional brick refractories. When exposed to alkali attacks in cement kilns, monolithic refractories form a protective layer on the surface which acts as a barrier against the corrosive alkali substances. This protective layer is typically formed by reactions between the alkali substances and the refractory material, resulting in the formation of a stable compound that is resistant to further attacks. Furthermore, monolithic refractories have high chemical resistance, which enables them to withstand the aggressive conditions inside cement kilns. They are designed to have low porosity, which prevents the penetration of alkali substances into the refractory material. This reduces the chances of alkali attacks and prolongs the service life of the refractory lining. In addition, monolithic refractories are often made from materials with high melting points, such as alumina, silica, and magnesia. These materials have excellent thermal stability, allowing the refractories to withstand the high temperatures in cement kilns without significant degradation. This thermal stability is crucial in preventing the formation of cracks and spalling, which can lead to alkali penetration and subsequent damage to the refractory lining. Overall, monolithic refractories are specifically engineered to resist alkali attacks in cement kiln applications by forming a protective layer, having high chemical resistance, and exhibiting excellent thermal stability. These properties make them an ideal choice for lining cement kilns and ensuring their long-term performance and durability.
- Q: What are the main factors affecting the corrosion resistance of monolithic refractories?
- The corrosion resistance of monolithic refractories is influenced by several key factors. Firstly, the chemical composition of the refractory material plays a significant role. Refractories with a high content of silica (SiO2) are generally more resistant to corrosion as silica has excellent resistance to acidic environments. On the other hand, refractories with a high alumina (Al2O3) content are more resistant to basic environments. Secondly, the microstructure of the refractory material is important. A dense and well-bonded microstructure provides better resistance to corrosion compared to materials with a porous structure. The presence of pores or cracks can allow corrosive substances to penetrate and attack the refractory, leading to its degradation. The temperature at which the refractory is exposed also affects its corrosion resistance. Higher temperatures can accelerate the corrosion process by promoting more aggressive chemical reactions. Moreover, thermal cycling, where the refractory is subjected to repeated heating and cooling, can create thermal stresses that can contribute to the degradation of the material. The type and concentration of corrosive agents present in the environment also impact the corrosion resistance of monolithic refractories. Different corrosive agents have varying degrees of reactivity with refractory materials. For example, acidic substances such as sulfuric acid or hydrochloric acid can cause significant corrosion, while alkaline substances like calcium oxide can lead to more gradual degradation. In addition, the mechanical stress applied to the refractory can influence its corrosion resistance. Mechanical vibrations, abrasion, or impact can weaken the refractory structure, making it more susceptible to corrosion. Finally, the manufacturing and installation process can affect the corrosion resistance of monolithic refractories. Factors such as proper mixing, curing, and drying techniques can contribute to the development of a more resistant refractory structure. In summary, the main factors affecting the corrosion resistance of monolithic refractories include the chemical composition, microstructure, temperature, presence of corrosive agents, mechanical stress, and manufacturing/installation processes. Understanding and managing these factors are crucial in selecting and maintaining the most suitable refractory material for a given application.
- Q: How do monolithic refractories improve the quality and consistency of iron and steel products?
- The use of monolithic refractories is essential for enhancing the quality and consistency of iron and steel products. These refractories, which are not shaped and can be easily molded and installed, offer several advantages over traditional brick refractories. To begin with, monolithic refractories provide superior thermal insulation properties, which effectively manage heat during the production process. By maintaining consistent and controlled temperatures, these refractories prevent thermal shocks and minimize thermal gradients, resulting in reduced cracking and distortion in the final products. As a result, the dimensional stability and overall quality of the products are improved. Additionally, monolithic refractories exhibit excellent resistance to thermal spalling and erosion. They can withstand high temperatures, chemical attacks, and mechanical stress, protecting the lining of furnaces and vessels used in iron and steel production. This resistance enhances the durability and reliability of refractory linings, preventing premature failure and extending the lifespan of the equipment. Another advantage of monolithic refractories is their ability to create a seamless lining. Unlike brick refractories, which have joints and gaps that can cause heat loss and uneven distribution, monolithic refractories form a continuous lining with no weak points. This ensures uniform heat distribution and minimizes the risk of hotspots or cold spots, resulting in consistent and reliable iron and steel products. Moreover, monolithic refractories offer flexibility in design and installation. They can be customized to fit various shapes and sizes, allowing for better furnace design optimization. This flexibility enables efficient use of space, improved heat transfer, and reduced energy consumption, all of which contribute to the overall quality and consistency of the final iron and steel products. In conclusion, monolithic refractories enhance the quality and consistency of iron and steel products by providing superior thermal insulation, resistance to thermal spalling and erosion, seamless linings, and flexibility in design and installation. These refractories improve the efficiency and reliability of the production process, resulting in higher-quality final products that meet the industry's stringent standards.
- Q: How are monolithic refractories installed and repaired in iron and steel applications?
- To ensure optimal performance and longevity in iron and steel applications, specific procedures are employed for the installation and repair of monolithic refractories. The installation process typically involves the following steps: 1. Proper surface preparation is crucial. This entails removing loose material, dirt, and dust to create a smooth and clean substrate that facilitates good adherence of the refractory material. 2. The refractory material, supplied as dry powders or granules, is mixed with water or a specific bonding agent according to the manufacturer's instructions to achieve the desired properties. 3. The mixed refractory material is then applied to the prepared surface using techniques such as troweling, spraying, or casting, depending on the installation requirements and the type of monolithic refractory. 4. Curing is necessary to maximize the strength and durability of the refractory material. The curing process can involve air drying, heat treatment, or a combination of both, in accordance with the specific refractory material's recommendations. When it comes to repairing monolithic refractories in iron and steel applications, the following steps are generally followed: 1. Thorough assessment of the damaged area or component is conducted to determine the extent of the damage and the appropriate repair method. 2. The damaged monolithic refractory material is carefully removed using suitable tools and techniques while ensuring the underlying substrate remains intact. 3. Similar to the installation process, the surface where the repair will take place is cleaned and prepared by removing any loose material, dirt, and dust. 4. The repair material, typically the same or similar to the original monolithic refractory, is mixed and applied to the damaged area. The application method may vary depending on the nature of the repair and the specific requirements of the refractory material. 5. The repaired area is properly cured and inspected to ensure the quality and effectiveness of the repair, following the manufacturer's guidelines for curing and post-repair inspection procedures. In conclusion, the meticulous execution of surface preparation, proper mixing and application of refractory material, and appropriate curing procedures are essential for the installation and repair of monolithic refractories in iron and steel applications. These steps guarantee reliable and durable refractory linings, which are vital for the efficient operation of iron and steel processes.
- Q: What are the specific requirements of monolithic refractories for ladle purging applications?
- Monolithic refractories used for ladle purging applications need to have specific requirements such as high thermal shock resistance, excellent erosion resistance, and good insulating properties. They should also have low porosity to prevent excessive penetration of slag or metal, high strength to withstand the mechanical stresses during purging, and good chemical stability to resist the corrosive environment of the ladle. Additionally, they should have good workability for ease of installation and repair.
- Q: What are some common maintenance practices for monolithic refractories in iron and steel furnaces?
- There are several common maintenance practices for monolithic refractories in iron and steel furnaces: 1. It is essential to conduct regular inspections. Trained professionals should inspect the refractories to identify any potential issues, such as wear, erosion, or damage. 2. Promptly repairing and patching damaged or eroded areas is crucial to maintain the integrity of the refractories. Refractory mortars or castable refractories can be used for this purpose. 3. Regularly cleaning the refractory lining is important to remove any build-up of impurities that can affect performance. Mechanical cleaning with brushes or scrapers, as well as chemical cleaning with acids, can be employed. 4. Controlled thermal cycling is often performed to condition and strengthen the refractories. Gradually increasing and decreasing the furnace temperature improves their resistance to thermal shock. 5. Applying protective coatings or sealants to the refractory lining enhances its resistance to chemical attack, erosion, and thermal cycling. These act as barriers against molten metals or slags. 6. Monitoring and controlling operating conditions inside the furnace, such as temperature, pressure, and atmosphere, is crucial. This helps prevent sudden changes that may negatively affect the refractories. 7. Regular training and education for furnace operators and maintenance personnel are crucial. This ensures they understand the importance of proper refractory maintenance, reducing the risk of premature failure. Implementing these maintenance practices significantly prolongs the lifespan of monolithic refractories in iron and steel furnaces. It maximizes their performance, leading to improved efficiency and cost-effectiveness in the production process.
- Q: What are the key factors affecting the installation and curing of monolithic refractories?
- The installation and curing of monolithic refractories can be affected by several important factors: 1. Material selection: Choosing the right monolithic refractory material is crucial as it determines how it will be installed and cured. Different materials have different requirements, so it is important to select the appropriate material for the specific application. 2. Surface preparation: Properly preparing the surface is essential for the successful installation and curing of monolithic refractories. The surface must be clean, free from contaminants, and properly roughened to ensure good adhesion of the refractory material. 3. Mixing and proportioning: How the refractory material is mixed and proportioned plays a significant role in its installation and curing. Following the manufacturer's instructions for mixing ratios and ensuring thorough mixing is important to achieve a uniform mixture. 4. Application technique: The technique used to apply the monolithic refractory material can greatly impact its installation and curing. Employing proper application techniques, such as gunning, casting, or ramming, is necessary to ensure uniformity and proper bonding with the substrate. 5. Temperature control: Controlling the temperature during installation and curing is critical for achieving the desired properties in the monolithic refractory. The curing process should be carried out at the recommended temperature, and sudden temperature changes should be avoided to prevent thermal stresses. 6. Moisture content: The moisture content of the refractory material and the surrounding environment can affect its installation and curing. Excessive moisture can cause shrinkage, cracking, or poor bonding, while insufficient moisture can hinder proper curing. Maintaining the optimum moisture content for the specific refractory material is important. 7. Curing time: The required curing time for monolithic refractories varies depending on the material and application. It is crucial to follow the recommended curing time to allow for proper strength development and dimensional stability. 8. Environmental conditions: Environmental factors, such as humidity, temperature, and air circulation, can influence the installation and curing of monolithic refractories. It is important to maintain suitable environmental conditions to facilitate proper drying and curing. In conclusion, understanding and addressing these key factors are essential to ensure the successful installation and curing of monolithic refractories, leading to improved performance and longevity of the refractory lining.
- Q: How do monolithic refractories contribute to energy efficiency in iron and steel manufacturing?
- Monolithic refractories play a crucial role in enhancing energy efficiency in iron and steel manufacturing processes. These refractories are made of a single material, typically a combination of high-quality aggregates, binders, and additives, which allows for easy installation and repair. One of the main ways monolithic refractories contribute to energy efficiency is by reducing heat loss. These materials have excellent insulation properties, which help to maintain high temperatures within the furnace or kiln. By minimizing heat loss, the energy required to maintain the desired temperature is significantly reduced, leading to lower energy consumption and cost savings. Moreover, monolithic refractories are designed to have high thermal conductivity. This property ensures efficient heat transfer from the hot gases or flames to the iron and steel being processed. By facilitating efficient heat transfer, monolithic refractories enable faster heating rates and reduce the overall processing time. This time reduction translates into energy savings and increased production capacity. Another significant advantage of monolithic refractories is their ability to withstand extreme temperatures and harsh operating conditions. These materials have excellent resistance to thermal shock, corrosion, and erosion, which extends their lifespan and reduces the need for frequent repairs or replacements. Consequently, the use of monolithic refractories leads to less downtime, allowing for continuous operation and improved energy efficiency. Furthermore, monolithic refractories offer design flexibility, which enables the optimization of furnace and kiln geometries. By tailoring the shape and dimensions of the refractory linings, heat distribution can be improved, ensuring more uniform heating and reducing energy wastage. The ability to customize the refractory linings also facilitates the implementation of advanced combustion technologies, such as regenerative burners or oxy-fuel burners, which further enhance energy efficiency. In summary, monolithic refractories contribute to energy efficiency in iron and steel manufacturing by reducing heat loss, enhancing heat transfer, withstanding extreme conditions, optimizing furnace geometries, and allowing for the implementation of advanced combustion technologies. By utilizing these refractories, the industry can achieve significant energy savings, cost reductions, and environmental benefits.
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Monolithic Refractories for Iron and Steel Industry - Calcined Petroleum Coke from Shanghai
- Ref Price:
-
- Loading Port:
- Shekou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t
- Supply Capability:
- 1000 m.t/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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