Monolithic Refractories Calcined Petroleum Coke 1-3mm FC:98.5%min for Iron and Steel Industry
- 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: How are monolithic refractories applied in the hot face and cold face of furnace linings?
- Because of their superior thermal and mechanical properties, monolithic refractories are commonly utilized in furnace linings. These materials are employed in both the hot face and cold face of furnace linings, but their application methods differ for each. When it comes to the hot face of furnace linings, monolithic refractories are applied to endure extreme temperatures and harsh conditions. This area directly faces the heat source and is exposed to the highest temperatures. In this region, the refractory material is specifically engineered to possess excellent thermal conductivity and high resistance to thermal shock. To apply monolithic refractories in the hot face, the commonly used technique is gunning. Gunning involves the spraying or troweling of the refractory material onto the lining's surface. This technique enables quick and efficient application, ensuring a uniform and dense layer of refractory material. Gunning is especially suitable for areas with intricate shapes and contours. On the other hand, the primary concern for the cold face of furnace linings is insulation and protection. The cold face refers to the area that does not directly come into contact with the heat source and experiences lower temperatures. In this area, the refractory material is designed to possess low thermal conductivity and high insulation properties. The application of monolithic refractories in the cold face is typically accomplished using the technique called ramming. Ramming involves compacting the refractory material into place using a pneumatic or hydraulic ramming tool. This technique ensures the creation of a dense and solid layer of refractory material, providing excellent insulation and protection against heat loss. In conclusion, monolithic refractories are vital components of furnace linings as they provide the necessary thermal insulation and mechanical strength required in high-temperature environments. The application techniques of gunning and ramming allow for efficient and effective installation in both the hot face and cold face of furnace linings.
- 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 type of refractory material, the temperature range, the chemical composition, and the physical structure of the refractory. Firstly, the type of refractory material plays a significant role in its thermal expansion behavior. Different types of refractories, such as alumina-based, silica-based, and magnesia-based refractories, have varying coefficients of thermal expansion (CTE). For example, alumina-based refractories generally have a lower CTE compared to silica-based refractories. Therefore, the choice of refractory material can greatly influence its thermal expansion characteristics. Secondly, the temperature range at which the refractory is exposed affects its thermal expansion. As the temperature increases, the refractory material expands due to the thermal energy absorbed. However, different refractories have different temperature-dependent expansion behaviors. Some refractories may have a linear or near-linear expansion with temperature, while others may exhibit non-linear or step-wise expansion. The temperature range of operation is an important consideration in determining the suitability of a refractory for a particular application. The chemical composition of the refractory also affects its thermal expansion. The presence of different chemical elements and compounds in the refractory material can influence its expansion behavior. For example, the addition of certain oxides, such as magnesia or zirconia, can alter the CTE of the refractory. Similarly, impurities or variations in the chemical composition can introduce differences in expansion characteristics among refractories of the same type. Lastly, the physical structure of the refractory, including its porosity, density, and microstructure, can affect thermal expansion. The presence of open or closed pores within the refractory can affect its ability to expand uniformly under thermal stress. The density of the refractory also plays a role, as denser refractories tend to have lower thermal expansion. Additionally, the microstructure, including grain size and orientation, can influence the overall expansion behavior of the refractory. In conclusion, the main factors affecting the thermal expansion of monolithic refractories include the type of refractory material, temperature range, chemical composition, and physical structure. Understanding these factors is essential in selecting the appropriate refractory for a specific application to ensure optimal performance and durability.
- Q: How do monolithic refractories help in reducing energy consumption in iron and steel production?
- Monolithic refractories help in reducing energy consumption in iron and steel production by providing efficient insulation and heat retention properties. These refractories have low thermal conductivity, which minimizes heat loss and ensures that the generated heat is effectively utilized for the production processes. Their high refractoriness allows them to withstand extreme temperatures, reducing the need for frequent repairs or replacements that would require additional energy consumption. Additionally, monolithic refractories offer better resistance to thermal shock, which prevents thermal stress-induced cracks and extends their lifespan. Overall, the use of monolithic refractories in iron and steel production aids in optimizing energy usage and improving overall energy efficiency.
- Q: How do monolithic refractories handle thermal expansion and contraction?
- Monolithic refractories are designed to handle the challenges of thermal expansion and contraction. These materials are composed of a single solid structure, as opposed to the traditional brick or tile forms of refractories. This unique composition allows monolithic refractories to better accommodate the thermal stresses associated with temperature changes. One way that monolithic refractories handle thermal expansion and contraction is through their ability to withstand high temperatures. These materials are typically engineered to have a high melting point, allowing them to maintain their structural integrity even under extreme heat conditions. This property helps to prevent the refractory from cracking or disintegrating due to thermal expansion. In addition, monolithic refractories often contain a binder or bonding agent that helps to hold the refractory particles together. This binder can be formulated to have a certain degree of flexibility, allowing the material to expand and contract without cracking or breaking. This flexibility helps to absorb the stresses caused by thermal expansion and contraction, ensuring the longevity and performance of the refractory. Furthermore, monolithic refractories can be applied in a way that allows for expansion and contraction. These materials can be installed with joints or gaps between sections, which can accommodate the movement caused by temperature changes. This technique, known as joint design or expansion joint systems, allows the refractory to expand and contract without causing damage to the overall structure. Overall, monolithic refractories are designed to handle thermal expansion and contraction by withstanding high temperatures, incorporating flexible binders, and using joint design techniques. These properties enable them to maintain their structural integrity and performance in extreme heat conditions, making them a reliable choice for applications that require resistance to thermal stress.
- Q: What are the main factors affecting the corrosion resistance of monolithic refractories?
- The corrosion resistance of monolithic refractories can be influenced by several important factors. To begin with, the refractory material's chemical composition plays a significant role. Refractories with high levels of silica (SiO2) generally exhibit greater resistance to corrosion due to silica's excellent resistance to acidic environments. Conversely, refractories with high alumina (Al2O3) content are more resistant to basic environments. Furthermore, the microstructure of the refractory material is crucial. A compact and well-bonded microstructure offers better corrosion resistance 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. Additionally, thermal cycling, which involves subjecting the refractory to repeated heating and cooling, can create thermal stresses that contribute to material degradation. The type and concentration of corrosive agents present in the environment also impact the corrosion resistance of monolithic refractories. Different corrosive agents have varying levels of reactivity with refractory materials. For instance, acidic substances like sulfuric acid or hydrochloric acid can cause significant corrosion, whereas alkaline substances like calcium oxide can lead to a more gradual degradation. Moreover, 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. Lastly, 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 conclusion, the corrosion resistance of monolithic refractories is influenced by factors including 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 specific application.
- Q: What are monolithic refractories?
- Monolithic refractories, in contrast to individual bricks or precast shapes, are refractory materials that are manufactured as a single unit. They can be shaped and installed without the need for joints or mortar, making them convenient for lining furnaces, boilers, kilns, and other high-temperature industrial equipment. These refractories consist of a carefully selected mixture of refractory aggregates, binders, and additives. This combination provides desired properties such as high temperature resistance, thermal shock resistance, and chemical durability. Aggregates like alumina, magnesia, zirconia, and silica are used, while binders such as clay, cement, or phosphate hold the aggregates together. One advantage of monolithic refractories is their ability to adapt to complex shapes and designs, allowing for customized linings that meet specific equipment requirements. They can be applied through pouring, gunning, ramming, or spraying onto the surface to be lined, leading to quick and efficient installation. This eliminates the need for time-consuming bricklaying and jointing, reducing installation time and labor costs. Monolithic refractories also possess superior thermal conductivity, enabling them to withstand high temperatures and sudden temperature changes. They offer excellent insulation properties, preventing heat loss and improving energy efficiency in industrial processes. Additionally, these refractories exhibit good resistance to chemical attack from molten metals, slags, gases, and other corrosive substances found in various industrial environments. This makes them highly suitable for applications in steel, cement, glass, petrochemical, and non-ferrous metals industries. In conclusion, monolithic refractories are a versatile and efficient solution for high-temperature applications. Their ability to be shaped and installed without joints or mortar, combined with their excellent thermal conductivity and chemical resistance, make them a valuable choice for lining industrial equipment operating under extreme conditions.
- Q: What are the limitations of monolithic refractories in high-temperature applications?
- Monolithic refractories have certain limitations when used in high-temperature applications. One major limitation is their susceptibility to thermal shock. Monolithic refractories lack the structural stability and resistance to sudden temperature changes compared to other refractory materials. Additionally, their relatively low thermal conductivity can lead to uneven heat distribution and potential hotspots, affecting the overall performance and longevity of the refractory lining. Another limitation is their susceptibility to chemical attack by certain aggressive environments, which can lead to accelerated deterioration and reduced lifespan. Overall, while monolithic refractories offer certain advantages in terms of installation flexibility and ease of maintenance, their limitations in terms of thermal shock resistance, thermal conductivity, and chemical resistance must be considered in high-temperature applications.
- Q: How do monolithic refractories enhance the performance of ladle and tundish purging systems?
- The performance of ladle and tundish purging systems is greatly improved by the use of monolithic refractories. These refractories offer various advantages in enhancing the efficiency and effectiveness of the purging process. To begin with, the thermal insulation properties of monolithic refractories are exceptional. When impurities and gases need to be eliminated from molten metal, high temperatures are necessary. By utilizing monolithic refractories, heat loss is minimized, and the desired temperature within the system is maintained. This ensures that the purging process is carried out effectively and efficiently. Furthermore, monolithic refractories possess superior resistance to erosion and corrosion. The molten metal and purging gases can be corrosive and abrasive, making it essential for the lining to withstand such harsh conditions. Monolithic refractories are specifically designed to endure these circumstances, preventing erosion and corrosion. This contributes to the longevity of the ladle and tundish purging systems, reducing the need for frequent repairs or replacements. Additionally, monolithic refractories provide remarkable strength and stability. As molten metal and purging gases move within the system, significant mechanical stresses are experienced. The use of monolithic refractories ensures that the lining remains structurally sound, preventing any deformation or failure under these conditions. This guarantees smooth and uninterrupted purging operations, thus enhancing the overall performance of the system. Moreover, the installation and maintenance of monolithic refractories are straightforward. Unlike traditional brick and mortar refractories, monolithic refractories can be easily applied as a single, uniform layer. This simplifies the installation process and reduces the time and effort required for maintenance. Any necessary repairs or replacements can be conducted more efficiently, resulting in minimal downtime and maximum productivity for the ladle and tundish purging systems. In conclusion, monolithic refractories significantly improve the performance of ladle and tundish purging systems by providing excellent thermal insulation, erosion and corrosion resistance, strength and stability, as well as ease of installation and maintenance. These properties contribute to the efficient and effective removal of impurities and gases from molten metal, ensuring high-quality output and optimizing the overall productivity of the purging process.
- Q: How are monolithic refractories installed and repaired in iron and steel production facilities?
- Monolithic refractories play a crucial role in iron and steel production facilities by offering insulation and protection against high temperatures, chemical corrosion, and mechanical wear. To install and repair these refractories, careful planning, expertise, and adherence to safety protocols are necessary. To begin installation, the surface must be prepared by eliminating loose material and cleaning the area thoroughly. This step guarantees proper adhesion of the refractory material and may also involve roughening or texturing the surface for better bonding. Next, a workable consistency is achieved by mixing the monolithic refractory material with water or a binder. The material is then applied to the prepared surface using techniques like casting, gunning, ramming, or troweling. The choice of application method depends on factors such as the type of refractory material, repair area, and desired outcome. During installation, it is vital to carefully follow the manufacturer's instructions regarding mixing ratios, curing times, and drying temperatures. Improper installation can result in reduced refractory performance, premature failure, and safety hazards. Repairing monolithic refractories in iron and steel production facilities is an ongoing process due to the harsh operating conditions and mechanical stresses they endure. It is crucial to promptly address any signs of damage or wear to prevent further deterioration. The first step in the repair process is to assess the extent of the damage. This can be achieved through visual inspection, thermal imaging, or non-destructive testing techniques. Once the damage is identified, the appropriate repair method can be determined. Minor repairs can often be accomplished using patching materials that have a composition similar to the original refractory. These materials are mixed with water or a binder to form a paste, which is then applied to the damaged area and allowed to cure. For more extensive repairs, the damaged refractory material may need to be completely removed using mechanical methods like chipping, grinding, or cutting. After removing the damaged material, the surface is prepared as mentioned earlier, and new refractory material is installed using the appropriate application method. It is important to note that the repair process should be carried out by trained personnel with expertise in refractory installation and repair. Safety precautions, such as wearing protective clothing, using proper tools, and following established procedures, should always be observed. In conclusion, the installation and repair of monolithic refractories in iron and steel production facilities necessitate careful planning, adherence to manufacturer's instructions, and expertise in refractory materials. By following proper procedures and promptly addressing any damage, these facilities can ensure the longevity and efficiency of their refractory linings, ultimately contributing to the smooth operation of their production processes.
- 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 Calcined Petroleum Coke 1-3mm FC:98.5%min for Iron and Steel Industry
- 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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