Low Nitrogen Carbon Raiser Graphite Petroleum Coke
- 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.
Technology:
Laborary Equpment
In our lab,we has a high precision balance,mullfe furnace,sample making machine, dring box,sulfur measurement instrument and other calibratiing equipments.As a result,before deliverung to our customers,our products have to pass a strict test to ensure the quality and components.The testing reports will be sent to our customers to confirm untill they satisfy with it.
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?
- Monolithic refractories are commonly used in furnace linings because of their superior thermal and mechanical properties. These materials are applied in both the hot face and cold face of furnace linings, but the application process differs for each. In the hot face of furnace linings, monolithic refractories are applied to withstand the extreme temperatures and harsh conditions. This is the area that directly faces the heat source and is exposed to the highest temperatures. Here, the refractory material is specifically designed to have excellent thermal conductivity and high resistance to thermal shock. To apply monolithic refractories in the hot face, a technique called gunning is commonly used. Gunning involves spraying or troweling the refractory material onto the surface of the lining. This technique allows for quick and efficient application, ensuring a uniform and dense layer of refractory material. Gunning is particularly suitable for areas with complex shapes and contours. On the other hand, in the cold face of furnace linings, the primary concern is insulation and protection. The cold face is the area that is not in direct contact with the heat source and experiences lower temperatures. Here, the refractory material is designed to have low thermal conductivity and high insulation properties. The application of monolithic refractories in the cold face is typically done using a technique called ramming. Ramming involves compacting the refractory material into place using a pneumatic or hydraulic ramming tool. This technique ensures a dense and solid layer of refractory material, providing excellent insulation and protection against heat loss. Overall, monolithic refractories play a crucial role in 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 common failure modes of monolithic refractories in iron and steel applications?
- Monolithic refractories, known for their exceptional thermal shock resistance, high temperature stability, and mechanical strength, find extensive use in iron and steel applications. However, like any other material, they are susceptible to failure. Numerous failure modes are associated with monolithic refractories in iron and steel applications. 1. Spalling, the detachment of refractory material from the surface, stands as one of the most prevalent failure modes. This detachment occurs due to thermal cycling, mechanical stress, or chemical reactions. Mismatched thermal expansion coefficients between the refractory and the surrounding structure can lead to cracking and subsequent detachment. 2. Erosion, another common failure mode, arises when the refractory material encounters the erosive action of molten metal, slag, or gases. Physical impact from flowing metal or chemical attack by corrosive slag components can contribute to erosion. This results in the loss of refractory material, reduced lining thickness, and compromised performance. 3. Corrosion, a significant failure mode, particularly affects iron and steel applications in contact with aggressive atmospheres or molten metal. The interaction between the refractory material and corrosive agents, such as oxides, sulfides, or alkalis present in the environment, leads to corrosion. Corrosion products weaken the refractory lining and shorten its lifespan. 4. Thermal shock, caused by extreme temperature fluctuations, poses a risk to monolithic refractories in iron and steel applications. Rapid heating or cooling can trigger thermal shock, resulting in cracking and failure of the refractory material. Thermal shock can occur due to uneven heating or cooling, sudden temperature changes, or thermal gradients within the refractory lining. 5. Abrasion is a potential failure mode in specific iron and steel applications, where monolithic refractories are exposed to abrasive wear. This wear occurs when the refractory lining comes into contact with solid particles like metallic oxides, slags, or raw materials. The repeated impact and rubbing action of these particles cause erosion and abrasion of the refractory material, leading to failure. To mitigate these failure modes, it is crucial to select appropriate refractories, employ proper installation techniques, and practice regular maintenance. Regular inspections, repair of damaged areas, and the application of protective coatings can greatly enhance the lifespan and performance of monolithic refractories in iron and steel applications.
- Q: How do monolithic refractories contribute to energy efficiency in iron and steel production?
- Monolithic refractories contribute to energy efficiency in iron and steel production by providing superior insulation and heat containment properties. These refractories have low thermal conductivity, which minimizes heat loss and ensures that the intense temperatures required for the production process are maintained within the furnace or kiln. This reduces the need for excessive fuel consumption and enables more efficient use of energy resources. Additionally, monolithic refractories can withstand high temperatures without significant structural damage, prolonging their lifespan and reducing the frequency of replacement, further contributing to energy efficiency in the industry.
- 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: How do monolithic refractories resist corrosion from molten metals?
- Due to their unique composition and structural properties, monolithic refractories have the ability to resist corrosion caused by molten metals. Typically made from a single material like alumina, magnesia, or silica, these refractories are specifically designed to withstand harsh chemical environments and high temperatures. A significant contributing factor to their corrosion resistance is their dense and compact structure. Through a specialized manufacturing process, monolithic refractories are created with a tightly bonded material that has minimal porosity. This low porosity prevents molten metals from penetrating the refractory and causing damage. Moreover, monolithic refractories often incorporate additives or binders to enhance their resistance to corrosion. These additives, such as silicon carbide, zirconia, or other chemically stable materials, can endure the corrosive effects of molten metals. Additionally, monolithic refractories possess excellent thermal shock resistance. This means that they can endure sudden temperature changes without cracking or spalling. When in contact with molten metals, the refractory's ability to handle thermal shock prevents the formation of cracks or fractures, which would allow further penetration of the corrosive molten metal. In conclusion, the combination of a dense structure, chemical additives, and high thermal shock resistance enables monolithic refractories to effectively resist corrosion caused by molten metals. These refractories find extensive use in various industrial applications, including steelmaking, foundries, and non-ferrous metal processing, where they offer reliable and durable protection against corrosion.
- Q: How do monolithic refractories perform in blast furnace taphole applications?
- Monolithic refractories perform excellently in blast furnace taphole applications due to their high thermal resistance, mechanical strength, and resistance to chemical attack. They are able to withstand the extreme temperatures and abrasive conditions of the blast furnace discharge, ensuring reliable and efficient operation of the taphole. Additionally, monolithic refractories offer easy installation and maintenance, reducing downtime and improving overall productivity in the blast furnace.
- 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 are: 1. High Strength: Shotcrete mixes used for monolithic refractory applications should have high compressive strength to withstand the high temperatures and stresses experienced in refractory environments. This ensures that the shotcrete lining remains intact and provides effective insulation and protection. 2. Low Porosity: Shotcrete mixes should have low porosity to minimize the infiltration of gases and liquids into the refractory lining. This helps to prevent corrosion and degradation of the lining, and ensures its long-term durability. 3. Thermal Stability: Shotcrete mixes should exhibit excellent thermal stability to withstand the extreme heat conditions in refractory applications. They should have low thermal conductivity to effectively insulate the structure and prevent heat transfer. This helps to maintain the integrity of the refractory lining and optimize its performance. 4. Abrasion Resistance: Shotcrete mixes used for monolithic refractory applications should have high abrasion resistance to withstand the mechanical wear and tear caused by the movement of materials and particles. This property ensures that the refractory lining remains intact and provides effective protection against erosion. 5. Chemical Resistance: Shotcrete mixes should be resistant to chemical attack from molten metals, slag, and other corrosive substances present in refractory applications. This helps to maintain the integrity of the lining and prolong its service life. 6. Workability: Shotcrete mixes should have good workability to facilitate easy placement and application. This allows for efficient and precise installation of the refractory lining, ensuring the desired thickness and coverage. Overall, shotcrete mixes used for monolithic refractory applications should possess a combination of high strength, low porosity, thermal stability, abrasion resistance, chemical resistance, and workability to ensure optimal performance and durability in refractory environments.
- Q: What are the key innovations in monolithic refractories for the iron and steel industry?
- Some key innovations in monolithic refractories for the iron and steel industry include the development of advanced materials such as low cement castables, gunning mixes, and shotcretes. These materials offer improved resistance to thermal shock, increased strength, and enhanced erosion resistance, thereby extending the service life of refractory linings in high-temperature environments. Additionally, the introduction of monolithic refractory installation techniques such as robotic application and advanced spraying technologies has improved efficiency and reduced downtime during maintenance and repair operations.
- 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: What are the main factors affecting the abrasion resistance of monolithic refractories?
- There are three key aspects that categorize the main factors influencing the abrasion resistance of monolithic refractories: material composition, microstructure, and service conditions. Firstly, the abrasion resistance of monolithic refractories is significantly determined by their material composition. The selection of raw materials, such as aggregates and binders, directly impacts the overall hardness, strength, and wear resistance of the refractories. For example, high-alumina refractories, which have a high proportion of alumina as their main component, demonstrate exceptional abrasion resistance due to the hardness and toughness of alumina. Conversely, refractories with a higher percentage of softer materials like clay or magnesia may exhibit lower abrasion resistance. Secondly, the microstructure of monolithic refractories plays a crucial role in their ability to endure abrasion. The arrangement and orientation of the aggregates, as well as the bond strength between the particles and the matrix, significantly contribute to their resistance against wear. An evenly distributed and interconnected network of aggregates can strengthen the refractories and enhance their resistance to abrasion. Additionally, a compact and well-sintered matrix can prevent abrasive particles from penetrating, thereby reducing wear. Lastly, the service conditions under which monolithic refractories operate are vital factors in determining their abrasion resistance. Variables such as temperature, atmosphere, and mechanical stress can greatly impact the wear behavior of refractories. High temperatures can cause thermal expansion and contraction, resulting in cracks and spalling, which accelerate abrasion. The presence of corrosive gases or chemicals can also deteriorate the microstructure of refractories, diminishing their wear resistance. Moreover, mechanical stress from impact or friction can lead to localized wear and damage the refractories. To conclude, the abrasion resistance of monolithic refractories is influenced by material composition, microstructure, and service conditions. By carefully selecting suitable raw materials, optimizing the microstructure, and considering specific service conditions, it is possible to enhance the abrasion resistance of monolithic refractories and improve their overall performance in high-wear applications.
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Low Nitrogen Carbon Raiser Graphite Petroleum Coke
- 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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