Monolithic Refractories for Iron and Steel Industry - Covering Fluxes and Powders
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 10 m.t.
- Supply Capability:
- 100000 m.t./month
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Product Description:
We offer a series of covering flux products including both fine-grained powders and hollow granulated fluxes, so it’s possible for customer to select a suitable material according to operational parameters of each specific application.
Generally for tundish application factors affecting product performance result to be steel grade, exposed steel surface to be covered, casting time, and sequence index.
Regarding ladle applications, critical factors are chiefly the amount and the characteristics of the refining slag.
Increasing demand of better quality steel and subsequent use of high performance basic tundish lining material boosted researching and developing of active basic tundish powders assuring high covering, insulating properties and low corrosion activity.
Moreover, effective NMI (non-metallic inclusions) absorption capability is provided by specific viscosity and surface tension of molten slag layer in direct contact with molten steel.
Plant experience in using these active basic tundish powders gave improved steel cleanness.
Insulating covering fluxes for tundish and ladle
We offer two types of insulating covering fluxes :
Rice ash, with high levels of thermal insulation
Fly ash mixtures, with high levels of thermal insulation and protection against re-oxidation
Insulating MgO-based covering fluxes
Spray-dried covering powders based on magnesite and with very low silica content, with good thermal insulation properties, protection against re-oxidation and low refractory erosion.
Active basic powders
We offer two types of active basic powders:
Active basic powders for tundish (CaO-based) in fine-grain powders and granulated form to maximize absorption of NMI.
Calcium aluminate based material is well known to give metallurgical active slags able to prevent sulphur pick up to the steel. It offers the potential for oxide pick-up and protection against re-oxidation. It is a material obtained by complete melting in high-capacity furnaces of bauxite and limestone. Because such materials have poor insulating properties, it is necessary to add an additional insulating compound on top.
FAQ
Q:Are you a trading company or manufacturer?
A:CNBM is a large-scale central governmental industrial group with its own manufacturing sector, research and development sector, trading sector and logistics sector.
Q:I have some special requirement about specifications.
A:We have a well-rounded product range, which endows us with the capability of applying many special specifications. Please feel free to contact us with yours.
Q:Do you accept OEM service?
A:Yes, we do.
Q:What is your delivery time?
A:It depends on the size/complexity of your order and our own production schedule. Usually we provide a faster delivery than the industry's average.
Q:What is the payment term?
A:Our payment terms are negotiable.
Q:Can I have my own logo on the product?
A:Sure, we can apply your own logo on the products according to your drawings.
- Q: How do monolithic refractories improve the efficiency of reheating furnaces in steel plants?
- The efficiency of reheating furnaces in steel plants is greatly improved by the use of monolithic refractories. Specifically designed to withstand high temperatures and harsh conditions, these refractories are an ideal choice for steel plants. One important way in which monolithic refractories enhance furnace efficiency is by decreasing heat loss. With their excellent insulation properties, these refractories minimize the transfer of heat from the furnace to its surroundings. As a result, less energy is wasted and the furnace can maintain its desired temperature more effectively. Furthermore, monolithic refractories contribute to a more uniform and controlled distribution of heat within the furnace. They can be easily shaped and installed to create a seamless lining, ensuring that heat is evenly spread throughout the furnace chamber. This even distribution of heat eliminates any hotspots or cold spots, resulting in a more efficient heating process. Another crucial role of monolithic refractories is reducing downtime and maintenance requirements. Unlike traditional brick linings, which are prone to cracking and erosion, monolithic refractories offer superior resistance to wear and tear. This increased durability reduces the need for frequent repairs and replacements, allowing for uninterrupted furnace operation and increased overall efficiency. Moreover, monolithic refractories help improve energy efficiency by decreasing fuel consumption. The superior insulation properties of these refractories help retain heat within the furnace, reducing the amount of energy needed to maintain the desired temperature. This leads to significant energy savings for steel plants, as less fuel is required to achieve the same heating results. In conclusion, the efficiency of reheating furnaces in steel plants is significantly enhanced by the use of monolithic refractories. These refractories reduce heat loss, ensure uniform heat distribution, minimize downtime and maintenance, and decrease fuel consumption. By incorporating these refractories into their furnace linings, steel plants can increase productivity, reduce energy costs, and improve overall operational efficiency.
- Q: What are the advantages of using castables in the iron and steel industry?
- Using castables in the iron and steel industry offers several benefits. Firstly, castables have superb thermal insulation properties, which effectively maintain the temperature of the molten metal. This prevents heat loss and ensures efficient energy usage, resulting in cost savings. Additionally, castables exhibit exceptional refractory strength, enabling them to withstand extreme temperatures and harsh operating conditions. This durability prolongs the lifespan of the refractory lining, reducing the need for frequent repairs or replacements. Castables also offer versatility as they can be easily molded into various shapes and sizes, making them highly adaptable for different applications in the iron and steel industry. This flexibility allows for customization in designing the refractory lining to meet specific requirements. Furthermore, castables can be installed quickly and effortlessly, minimizing downtime during installation or maintenance. Their monolithic lining capability eliminates the need for individual bricks or tiles, saving time and effort. Castables are also resistant to chemical attacks from molten metal, slag, and other corrosive substances commonly encountered in the iron and steel industry. This ensures the integrity of the refractory lining and prevents contamination of the metal being processed. Moreover, castables typically require fewer raw materials compared to traditional refractory bricks or tiles, leading to cost savings in terms of material procurement, transportation, and storage. This makes castables a cost-effective solution. Lastly, the use of castables in the iron and steel industry enhances production efficiency by providing a smooth and uniform lining. This facilitates improved heat transfer, metal flow, and reduced downtime, ultimately increasing overall productivity. In conclusion, the advantages of using castables in the iron and steel industry encompass excellent thermal insulation, high refractory strength, versatility, easy installation, resistance to chemical attack, reduced material costs, and enhanced production efficiency. These benefits establish castables as the preferred choice for lining furnaces, ladles, tundishes, and other equipment in the iron and steel manufacturing process.
- Q: What are the key characteristics of monolithic refractories for electric arc furnace applications?
- Monolithic refractories designed for electric arc furnace applications possess several crucial qualities that render them suitable for the challenging conditions and extreme temperatures encountered in these environments. To begin with, monolithic refractories exhibit exceptional resistance to thermal shock. Electric arc furnaces operate at exceedingly high temperatures, and the rapid fluctuations in temperature during the melting and refining processes can subject the refractories to significant thermal stress. Monolithic refractories, however, are engineered to endure these thermal shocks without developing cracks or spalling, thereby guaranteeing the durability and performance of the lining. Moreover, monolithic refractories boast a high resistance to chemical attack. Electric arc furnaces involve the melting and refining of diverse metals and alloys, which can generate highly corrosive atmospheres. Monolithic refractories incorporate chemically inert materials and additives that bestow resistance against the corrosive impact of molten metals and slag, safeguarding the lining against chemical deterioration. Another noteworthy characteristic of monolithic refractories for electric arc furnace applications is their exceptional refractoriness. Refractoriness denotes a material's ability to retain its strength and integrity at elevated temperatures. Electric arc furnaces typically operate at temperatures surpassing 1500°C, and monolithic refractories are specifically engineered to endure these extreme conditions without experiencing substantial loss of properties or degradation. Furthermore, monolithic refractories offer efficient thermal conductivity. This property facilitates efficient heat transfer throughout the lining, ensuring uniform heating and melting of the charge material. It also helps minimize the occurrence of hot spots and thermal gradients, which can result in uneven wear and premature failure of the lining. Lastly, monolithic refractories are renowned for their ease of installation and repair. Unlike traditional brick or block refractories, monolithic materials can be cast, sprayed, or rammed into place, eliminating the need for intricate masonry work. This not only saves time and labor but also enables convenient maintenance and repair of the lining, reducing downtime and enhancing overall furnace efficiency. In conclusion, monolithic refractories for electric arc furnace applications possess exceptional thermal shock resistance, high chemical resistance, high refractoriness, efficient thermal conductivity, and ease of installation and repair. These qualities render monolithic refractories ideal for withstanding the harsh conditions and demanding requirements of electric arc furnace operations.
- Q: How can the lifespan of monolithic refractories be extended?
- The lifespan of monolithic refractories can be extended through proper installation techniques, regular maintenance, and careful handling.
- Q: How do monolithic refractories enhance the efficiency of reheating furnaces?
- Monolithic refractories play a crucial role in enhancing the efficiency of reheating furnaces in several ways. Firstly, monolithic refractories offer excellent thermal insulation properties, which minimize heat losses from the furnace. This insulation helps to maintain a high and consistent temperature inside the furnace, reducing the need for excessive fuel consumption and improving energy efficiency. Secondly, monolithic refractories have high thermal conductivity, which allows for efficient heat transfer within the furnace. This means that the heat generated by the burners can be evenly distributed throughout the furnace, ensuring uniform heating of the materials being reheated. This uniform heating not only enhances the overall efficiency but also helps to prevent hot spots or cold spots, which can negatively impact the quality of the reheated products. Moreover, monolithic refractories have excellent resistance to thermal shock and mechanical stress. Reheating furnaces often undergo rapid temperature changes and are subjected to intense mechanical forces due to the movement of materials and the operation of various equipment. The use of monolithic refractories helps to prevent cracks, spalling, and other forms of refractory damage, thus ensuring the longevity and continuous operation of the furnace without interruptions for repairs. Additionally, monolithic refractories offer ease of installation, repair, and maintenance compared to traditional brick refractories. Their ability to be cast or sprayed onto the furnace lining allows for a more precise and seamless installation, reducing the risk of weak joints or gaps that could compromise the furnace's efficiency. Furthermore, in case of any damage or wear, monolithic refractories can be easily repaired or patched up, minimizing downtime and improving the overall productivity of the furnace. In summary, the use of monolithic refractories in reheating furnaces enhances efficiency by providing effective thermal insulation, facilitating uniform heat distribution, resisting thermal shock and mechanical stress, and allowing for easier installation and maintenance. These benefits contribute to lower energy consumption, improved product quality, increased furnace durability, and reduced operational costs.
- Q: How are monolithic refractories installed and repaired in iron and steel applications?
- Monolithic refractories in iron and steel applications are installed by carefully preparing the surface, followed by applying and compacting the refractory material using various techniques like gunning, casting, ramming, or shotcreting. In terms of repair, damaged sections are usually removed and replaced with fresh refractory material, ensuring proper bonding and compaction to restore the integrity of the lining. Regular inspections and maintenance are essential to identify and address any potential issues promptly.
- Q: What are the factors affecting the thermal conductivity of monolithic refractories?
- The thermal conductivity of monolithic refractories can be influenced by several factors. Firstly, the chemical composition of the refractory material plays a significant role in determining its thermal conductivity. The types and amounts of raw materials used can result in different thermal conductivities. For example, refractories with a higher content of insulating materials, such as alumina or silica, tend to have lower thermal conductivities. Secondly, the porosity of the refractory material also affects its thermal conductivity. Higher porosity means more air or gas-filled voids within the material, which act as thermal insulators. Therefore, refractories with higher porosity generally have lower thermal conductivities. Thirdly, the density of the refractory material is another important factor. Higher density materials usually have higher thermal conductivities as the particles are packed more closely together, allowing for better heat transfer. Moreover, the size of the grains in the refractory material can impact the thermal conductivity. Smaller grain sizes result in higher contact points between particles, facilitating better heat transfer. Therefore, refractories with smaller grain sizes typically have higher thermal conductivities. Additionally, the temperature at which the refractory material operates can affect its thermal conductivity. Some materials may exhibit changes in thermal conductivity at different temperature ranges. For instance, certain refractories may have lower thermal conductivities at low temperatures but higher conductivities at high temperatures due to changes in their crystal structure. Furthermore, the presence of moisture or water in the refractory material can significantly decrease its thermal conductivity. Water has a relatively low thermal conductivity, so even a small amount of moisture can act as an insulating barrier within the material. The microstructure of the refractory material, including the arrangement and orientation of its grains, can also affect thermal conductivity. A well-aligned microstructure with good interconnectivity between the grains can enhance heat transfer, resulting in higher thermal conductivity. In conclusion, the thermal conductivity of monolithic refractories is influenced by factors such as composition, porosity, density, grain size, temperature, moisture content, and microstructure. Understanding and controlling these factors is crucial for optimizing the thermal performance of monolithic refractories in various high-temperature applications.
- Q: What are the key properties of patching mixes used for monolithic refractory repairs?
- The key properties required for patching mixes used in the repair of monolithic refractories include: 1. High temperature resistance: The patching mixes should have the ability to withstand high temperatures without compromising their structural integrity. They must be capable of enduring temperatures ranging from 2000 to 3000 degrees Fahrenheit. 2. Chemical resistance: These patching mixes should be resistant to chemical reactions that occur in the presence of molten metals, slag, or other corrosive substances. They should not deteriorate or react with these materials, ensuring the longevity of the repaired refractory. 3. Thermal shock resistance: The patching mixes must have the ability to withstand sudden and extreme temperature changes without cracking or spalling. Refractory linings are often subjected to intense thermal cycling, and the patching material should be able to endure these conditions without failure. 4. Adhesion: The patching mixes should possess excellent adhesion properties to create a strong bond with the existing refractory material. This is crucial to prevent any separation or detachment of the patching material, which could result in further damage or failure. 5. Workability: The patching mixes should have good workability, allowing for easy and efficient application. They should be easily moldable and capable of effectively filling cracks, gaps, or damaged areas. 6. Setting and curing time: The patching mixes should have a reasonable setting and curing time. They should be able to harden quickly to minimize downtime during repairs, while also providing sufficient time for proper application and shaping. 7. Density and porosity: The patching material should have an appropriate density and porosity to resist penetration by molten metal or slag. Low porosity ensures that the repaired refractory maintains its thermal insulation properties. 8. Mechanical strength: The patching mixes should exhibit adequate mechanical strength to withstand physical stresses, such as abrasion or impact, that may occur during operation. 9. Compatibility: It is important that the patching mixes are compatible with the existing refractory material to ensure a seamless integration and prevent any potential chemical reactions or incompatibilities that could compromise the repair. By considering these key properties, patching mixes used for monolithic refractory repairs can effectively restore the integrity and performance of refractory linings, prolonging their lifespan and ensuring efficient and safe operation in high-temperature environments.
- Q: What are the recommended storage and handling practices for monolithic refractories?
- To ensure optimal performance and longevity of monolithic refractories, it is crucial to adhere to recommended storage and handling practices. Take note of the following key practices: 1. Storage: Store monolithic refractories in a clean, dry, and well-ventilated area. Protect the storage facility from moisture, extreme temperatures, and direct sunlight. Ideally, use pallets or racks to prevent contact with the ground and minimize the risk of damage. 2. Handling: Handle monolithic refractories with care to avoid physical damage. Use appropriate lifting equipment, such as forklifts or cranes, to lift and move the refractories. This will prevent excessive stress or strain on the material. Avoid dropping or dragging them, as this can cause cracks or fractures. 3. Packaging: Inspect the packaging for any signs of damage or moisture before accepting the delivery. Damaged packaging may indicate potential damage to the refractory material. Immediately inform the supplier if any anomalies are noticed. 4. Moisture control: Protect monolithic refractories from direct contact with water or excessive humidity during storage and handling. Moisture absorption can reduce performance and structural integrity. If refractories become wet, thoroughly dry them before use to eliminate absorbed moisture. 5. Stack height: Consider the stack height when storing monolithic refractories. Excessive stacking can apply pressure on lower layers, leading to deformation or cracking. Follow the manufacturer's recommendations for maximum stack height to ensure structural integrity. 6. Regular inspection: Regularly inspect the refractory material for any signs of damage or degradation during storage and handling. Look for cracks, spalling, or any visible abnormalities. If any issues are identified, consult the manufacturer or a refractory expert to determine if the material is still suitable for use. By adhering to these recommended storage and handling practices, you can minimize the risk of damage to monolithic refractories, optimize their performance, extend their service life, and ensure their effectiveness in high-temperature applications.
- Q: How do monolithic refractories improve energy efficiency in the iron and steel industry?
- Various mechanisms are employed by monolithic refractories to enhance energy efficiency in the iron and steel industry. To begin with, these refractories possess exceptional insulation properties that effectively minimize heat loss during production. This results in a higher retention of heat within the furnace, thereby increasing energy efficiency. Furthermore, monolithic refractories exhibit low thermal conductivity, facilitating improved heat transfer within the furnace. This allows for efficient distribution of the heat generated during production, enabling optimal temperature control and reducing energy wastage. Additionally, monolithic refractories demonstrate high resistance to thermal shock and corrosion, which are common challenges faced in the iron and steel industry. By enduring extreme temperatures and chemical reactions, these refractories prevent premature wear and tear, consequently reducing the need for frequent repairs and replacements. This not only conserves energy but also minimizes downtime, leading to enhanced productivity and energy efficiency. Moreover, the utilization of monolithic refractories enables better furnace design and optimization. Their flexibility permits the creation of bespoke shapes and linings that cater to specific furnace requirements, resulting in improved heat transfer and combustion efficiency. This customized approach promotes energy savings by maximizing fuel utilization and reducing emissions. Lastly, monolithic refractories possess a longer lifespan compared to conventional brick refractories. This prolonged durability reduces the frequency of refractory replacements, subsequently lowering the energy consumption associated with the manufacturing and installation of new refractories. Overall, monolithic refractories play a significant role in enhancing energy efficiency in the iron and steel industry by reducing heat loss, improving heat transfer, withstanding thermal shock and corrosion, enabling better furnace design, and increasing refractory lifespan. Their usage not only saves energy but also enhances productivity and sustainability within the industry.
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Monolithic Refractories for Iron and Steel Industry - Covering Fluxes and Powders
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 10 m.t.
- Supply Capability:
- 100000 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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