Monolithic Refractories for Iron and Steel Industry - Calcined Petroleum Coke with Stable Quality
- 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 common manufacturing processes used for monolithic refractories?
- The common manufacturing processes used for monolithic refractories include: 1. Mixing: The first step in the manufacturing process is the proper mixing of the raw materials. This involves carefully measuring and combining the different ingredients to ensure a homogeneous mixture. 2. Wetting: Once the ingredients are mixed, water or a liquid binder is added to wet the mixture. This helps in improving the workability and plasticity of the material, making it easier to shape and mold. 3. Forming: The wet mixture is then shaped into the desired form using various techniques such as casting, gunning, ramming, or extrusion. Casting involves pouring the wet mixture into a mold and allowing it to solidify, while gunning uses a spray gun to apply the material onto a surface. Ramming involves compacting the wet mixture into a mold using a ramming tool, and extrusion involves forcing the wet mixture through a die to create specific shapes. 4. Drying: After forming, the shaped monolithic refractory is dried to remove any excess moisture. This is typically done in a controlled environment with specific temperature and humidity conditions to prevent cracking or warping. 5. Firing: Once dried, the monolithic refractory is fired at high temperatures to achieve its desired properties. This process, known as sintering, helps in bonding the particles together and increasing the strength and stability of the material. 6. Finishing: After firing, the monolithic refractory may undergo additional finishing processes such as grinding, polishing, or coating to improve its surface quality and enhance its performance. These common manufacturing processes ensure the production of high-quality monolithic refractories with consistent properties and performance characteristics.
- Q: How are monolithic refractories recycled or disposed of at the end of their lifespan?
- Monolithic refractories, widely utilized in high-temperature industrial applications, offer various means of recycling or disposal once their lifespan concludes. The preferred approach depends on the specific monolithic refractory type and its composition. Reclamation stands as a common method for recycling monolithic refractories. This process entails collecting used refractory materials and subjecting them to processing to eliminate any impurities or contaminants. The resultant reclaimed refractory material can then be crushed, ground, or milled into a fine powder suitable for utilization as a raw material in manufacturing new refractories. Thermal treatment represents an alternative means of recycling monolithic refractories. This method involves exposing the used refractory material to high temperatures within a controlled environment, such as a kiln or furnace. The heat effectively breaks down the refractory material, eliminating any binders or impurities. The resulting material can then be reused as a raw material or integrated into other applications, such as construction aggregates. When recycling is not feasible, specialized facilities designed for handling and treating hazardous waste offer a disposal avenue for monolithic refractories. These facilities ensure the proper containment and treatment of the refractory material, minimizing any potential environmental impact. This disposal method is typically reserved for refractories containing hazardous substances or those that cannot be recycled due to their composition. It is important to emphasize that the appropriate disposal or recycling method for monolithic refractories must adhere to local regulations and guidelines. These regulations aim to ensure the safe handling, treatment, and disposal of these materials, taking into account their potential environmental and health effects. Therefore, industries and businesses must collaborate closely with waste management professionals and adhere to the appropriate procedures to responsibly manage monolithic refractories at the end of their lifespan.
- Q: What are the challenges in recycling and disposing of monolithic refractories?
- Recycling and disposing of monolithic refractories pose several challenges that need to be addressed in order to minimize environmental impact and maximize resource efficiency. One of the main challenges is the handling and transportation of monolithic refractories due to their heavy and bulky nature. These materials are often used in high-temperature applications, such as furnace linings, and can be difficult to dismantle and remove from equipment. The weight and size of monolithic refractories make it challenging to transport them to recycling or disposal facilities, requiring specialized equipment and infrastructure. Another challenge is the heterogeneity of monolithic refractories, which often contain various types of refractory materials, binders, and additives. This complexity makes it difficult to separate and categorize different components for effective recycling. The lack of standardized recycling processes for monolithic refractories further complicates the recycling efforts. Furthermore, the high melting points of refractory materials used in monolithic refractories can make it energy-intensive and costly to recycle them through conventional methods like melting and remolding. Alternative recycling methods, such as thermal treatment or chemical processing, need to be explored and optimized to make the recycling process more economically and environmentally viable. Ensuring the proper disposal of monolithic refractories is also a challenge. If these materials are not recycled, they often end up in landfills, taking up valuable space and potentially leaching harmful substances into the environment. Landfilling refractories can also pose a risk of contamination if they are not properly managed or if hazardous additives are present in the materials. To address these challenges, it is crucial to invest in research and development to develop 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 the recycling and disposal of these materials. 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: What are the different techniques for installing monolithic refractories?
- There are several techniques for installing monolithic refractories, each with its own advantages and suitability for different applications. Some of the common techniques include: 1. Casting: In this technique, the refractory material is mixed with water or a binder to form a slurry. The slurry is then poured into molds or directly onto the prepared surface. The material is allowed to set and harden, forming a solid monolithic structure. 2. Gunning: Gunning involves spraying the refractory material onto the surface using a gunning machine. The material is mixed with water or a binder to form a wet mix, which is then propelled onto the surface at high velocity. This technique is commonly used for repairing or lining larger areas and can be done onsite. 3. Ramming: Ramming involves compacting the refractory material into place using a pneumatic or manual ramming tool. The material is typically preheated to reduce moisture content and increase workability. This technique is often used for lining smaller areas or for filling gaps between bricks or precast shapes. 4. Shotcreting: Shotcreting is a technique similar to gunning, but it involves using a dry mix of refractory material. The dry mix is combined with water or a binder just before it is sprayed onto the surface using a high-pressure nozzle. Shotcreting is commonly used for lining larger areas or for creating complex shapes. 5. Troweling: Troweling involves applying the refractory material onto the surface using a trowel or a similar tool. The material is typically a wet mix and is spread and smoothed manually. This technique is often used for patching or repairing small areas or for finishing touches. 6. Vibrating: Vibrating involves using a vibrating tool or a vibrator to compact the refractory material and remove air pockets. This technique is commonly used for improving the density and strength of the monolithic refractory after it has been installed using other techniques. It is important to note that the selection of the technique depends on various factors such as the type of refractory material, the size and shape of the area to be lined, and the specific requirements of the application. Additionally, proper preparation of the surface and adherence to installation guidelines are crucial for ensuring the effectiveness and longevity of the monolithic refractory.
- Q: How do monolithic refractories prevent slag penetration?
- Monolithic refractories prevent slag penetration by forming a dense and continuous protective layer on the surface of the refractory material. This layer acts as a barrier, preventing the molten slag from infiltrating and damaging the refractory.
- Q: How do monolithic refractories prevent thermal radiation in the iron and steel industry?
- Monolithic refractories play a vital role in the iron and steel industry by preventing thermal radiation. Thermal radiation is the transfer of heat energy through electromagnetic waves and poses a significant challenge due to the industry's high temperatures. Monolithic refractories are refractory materials that come in a single piece and are designed with exceptional thermal insulation properties. They have low thermal conductivity, meaning they do not conduct heat well. This quality allows them to act as a barrier against thermal radiation. In the iron and steel industry, monolithic refractories are commonly used as linings in furnaces, ladles, and other equipment exposed to extreme temperatures. These linings act as protective layers, preventing heat from escaping and reducing the emission of thermal radiation. Furthermore, monolithic refractories have high emissivity, which means they can absorb and re-emit thermal radiation effectively. This characteristic enables them to capture and contain heat within the equipment, minimizing the amount of radiation that escapes into the surroundings. By preventing thermal radiation, monolithic refractories help maintain the desired temperatures during the iron and steel production process. This is crucial for achieving efficient and controlled operations, as well as ensuring the quality of the final products. Moreover, the use of monolithic refractories in the iron and steel industry also contributes to energy savings. By reducing heat loss through thermal radiation, less energy is needed to maintain the desired temperatures, resulting in lower energy consumption and cost savings. In conclusion, monolithic refractories are indispensable for preventing thermal radiation in the iron and steel industry. Their excellent thermal insulation properties, low thermal conductivity, and high emissivity make them effective barriers against heat transfer through radiation. By minimizing heat loss and ensuring controlled temperatures, monolithic refractories contribute to efficient operations, high-quality products, and energy savings.
- Q: How do monolithic refractories withstand the alkali attacks in cement kiln applications?
- Monolithic refractories withstand alkali attacks in cement kiln applications due to their unique composition and properties. These refractories are made of high-quality materials such as silica, alumina, and magnesia, which have excellent resistance to alkali reactions. Additionally, they are designed to have dense and compact structures, limiting the penetration of alkali compounds into the refractory material. The dense structure also helps in reducing the permeability of the refractory, preventing alkali infiltration. Moreover, monolithic refractories often have a high melting point, which further enhances their resistance against alkali attacks. Overall, the combination of material composition, compact structure, and high melting point enables monolithic refractories to withstand the harsh alkali environment of cement kilns.
- Q: What are the key factors affecting the installation and curing of monolithic refractories?
- There are several key factors that affect the installation and curing of monolithic refractories: 1. Material selection: The choice of monolithic refractory material is crucial as it determines the installation and curing process. Different materials have different installation and curing requirements, so it is important to select the right material for the specific application. 2. Surface preparation: Proper surface preparation is essential for the successful installation and curing of monolithic refractories. The surface should be clean, free from contaminants, and properly roughened to ensure good adhesion of the refractory material. 3. Mixing and proportioning: The mixing and proportioning of the refractory material play a significant role in its installation and curing. It is important to follow the manufacturer's instructions for mixing ratios and ensure thorough mixing to achieve a homogeneous mixture. 4. Application technique: The technique used to apply the monolithic refractory material can greatly impact its installation and curing. Proper application techniques, such as gunning, casting, or ramming, should be employed to ensure uniformity and proper bonding with the substrate. 5. Temperature control: Temperature control during the installation and curing process is critical for the development of desired properties in the monolithic refractory. The curing process should be carried out at the recommended temperature, and any 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 lead to shrinkage, cracking, or poor bonding, while insufficient moisture can hinder proper curing. It is important to maintain the optimum moisture content for the specific refractory material. 7. Curing time: The curing time required 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. Suitable environmental conditions should be maintained to facilitate proper drying and curing. Overall, understanding and addressing these key factors can ensure the successful installation and curing of monolithic refractories, leading to improved performance and longevity of the refractory lining.
- Q: How do monolithic refractories resist corrosion and erosion in the iron and steel industry?
- To combat corrosion and erosion in the iron and steel industry, monolithic refractories are designed with a combination of composition and application techniques. Firstly, the composition includes high-quality raw materials like alumina, magnesia, and silica, which possess exceptional resistance to corrosion and erosion. For example, alumina can withstand high temperatures and chemical attacks, making it an ideal choice for protecting against the corrosive nature of the industry. Additionally, the application techniques used in installing monolithic refractories are crucial for their resistance. These techniques, such as gunning, ramming, or casting, ensure a tight and seamless bond between the refractory and the steel structure, reducing the chances of corrosion and erosion. Furthermore, monolithic refractories can be tailored to meet the specific needs of different parts of the iron and steel industry. For areas exposed to molten metal, refractories with high thermal conductivity and resistance to chemical attack are utilized. This customization enhances the refractory's effectiveness in resisting corrosion and erosion. Moreover, monolithic refractories often incorporate additives or binders to further enhance their resistance. These additives provide extra protection against chemical attacks from molten metal or corrosive gases, making the refractory even more durable in harsh conditions. In summary, monolithic refractories effectively resist corrosion and erosion in the iron and steel industry due to their composition, application techniques, customization, and the inclusion of additives. By combining these factors, these refractories ensure the longevity and efficiency of steel structures in the challenging environments of the industry.
- Q: How do monolithic refractories improve the efficiency of ladle and tundish lining systems?
- Monolithic refractories play a crucial role in improving the efficiency of ladle and tundish lining systems in several ways. Firstly, monolithic refractories are made from a single piece of material, which eliminates the need for joints or seams. This seamless construction ensures that there are no weak points in the lining system, reducing the risk of leakage or infiltration of molten metal. Additionally, monolithic refractories offer excellent thermal insulation properties. They have low thermal conductivity, meaning they can withstand high temperatures without transferring heat to the surrounding environment. This insulation capability minimizes heat loss from the ladle or tundish, allowing for better heat retention and energy efficiency. It also helps maintain the desired temperature of the molten metal, preventing premature solidification and maintaining the desired fluidity for casting. Furthermore, monolithic refractories offer superior resistance to chemical attacks from molten metal and slag. They have excellent corrosion resistance properties, ensuring that the lining remains intact and durable even when exposed to aggressive chemical reactions. This resistance to corrosion extends the lifespan of the lining system, reducing the frequency of maintenance and replacement, thereby improving overall efficiency and reducing downtime. Another advantage of monolithic refractories is their ease of installation. Unlike traditional brick or block linings, monolithic refractories can be applied as a single, uniform layer, making the installation process simpler and quicker. This reduces the time required for lining repairs or replacements, minimizing production interruptions and improving the overall operational efficiency of ladles and tundishes. In summary, monolithic refractories improve the efficiency of ladle and tundish lining systems by providing seamless construction, excellent thermal insulation, superior corrosion resistance, and easy installation. These characteristics ensure better heat retention, reduced heat loss, increased durability, and minimized downtime, resulting in improved productivity and cost-effectiveness for metal casting processes.
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Monolithic Refractories for Iron and Steel Industry - Calcined Petroleum Coke with Stable Quality
- 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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