Covering Fluxes Covering Powders For Steel Mill

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Loading Port:
Tianjin
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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.

Covering Fluxes Covering Powders For Steel Mill

  

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:
Monolithic refractories are able to withstand corrosive environments in steelmaking processes due to their unique properties and composition. First and foremost, monolithic refractories are known for their high resistance to temperature and thermal shock. Steelmaking processes involve extremely high temperatures, sometimes reaching up to 1700 degrees Celsius. Monolithic refractories are designed to withstand these extreme temperatures without losing their structural integrity. Additionally, monolithic refractories have excellent chemical resistance. The corrosive environments in steelmaking processes often consist of aggressive chemicals such as molten metal, slag, and gases like carbon monoxide and sulfur dioxide. Monolithic refractories are made from materials that are resistant to these chemicals, preventing them from reacting and causing corrosion. Moreover, monolithic refractories have a dense and homogeneous structure. This helps to prevent the penetration of corrosive agents into the refractory material, further enhancing its resistance to corrosion. The dense structure also minimizes the formation of cracks and fissures, which can act as pathways for corrosive agents to infiltrate the refractory. Furthermore, monolithic refractories are often made from materials with high refractoriness, such as alumina, magnesia, and silica. These materials have high melting points, which makes them more resistant to the extreme temperatures in steelmaking processes. They also have low thermal conductivity, which helps to minimize heat transfer and reduce the risk of thermal damage to the refractory. Lastly, monolithic refractories are often designed with specific additives and binders that enhance their resistance to corrosion. These additives can include materials like zircon, chrome, or graphite, which provide additional protection against the corrosive environment. In conclusion, monolithic refractories withstand the corrosive environments in steelmaking processes through their high resistance to temperature and thermal shock, excellent chemical resistance, dense and homogeneous structure, high refractoriness, and the use of specific additives and binders. These properties and characteristics make monolithic refractories an ideal choice for withstanding the harsh conditions of steelmaking processes and ensuring the longevity and efficiency of the refractory lining.
Q:
The installation techniques for monolithic refractories depend on the specific type and application of the refractory material. However, there are general guidelines that can be followed for most installations of monolithic refractories. 1. Surface Preparation: Prior to installing monolithic refractories, it is essential to ensure that the surface is clean, dry, and free from loose particles or contaminants. This can be accomplished by removing any existing refractory materials, thoroughly cleaning the surface, and allowing it to completely dry. 2. Mixing: Monolithic refractories are typically supplied in either a dry or wet form, depending on the specific material. If the refractory is in a dry form, it must be mixed with water or a suitable liquid binder to achieve a workable consistency. It is important to follow the manufacturer's guidelines for the correct mixing ratio and duration to ensure proper bonding and setting of the refractory material. 3. Application: The technique for applying monolithic refractories can vary depending on the specific material and desired installation method. Some common techniques include troweling, gunning, ramming, and casting. - Troweling: This involves manually applying the refractory material with a trowel, typically used for thin linings or patching small areas. - Gunning: Gunning is a method of applying refractory material using a gunning machine or handheld gun. It is suitable for large areas or areas that are difficult to access. The refractory material is mixed with water or a liquid binder and sprayed onto the surface at a high velocity. - Ramming: Ramming involves compacting the refractory material into place using a ramming tool or pneumatic hammer. It is commonly used for forming furnace linings or repairing damaged areas. - Casting: Casting refers to pouring the refractory material into a mold to create a desired shape or lining. It is often used for complex shapes or large-sized components. 4. Curing and Drying: Once the refractory material is applied, it must be properly cured and dried to achieve its maximum strength and thermal properties. The curing and drying process may vary depending on the specific material, but typically involves controlled heating at a gradual rate to eliminate any remaining moisture and allow the refractory to set and harden properly. It is important to note that these are general guidelines, and it is always recommended to consult the manufacturer's instructions and specifications for the specific monolithic refractory material being used. Following the recommended installation techniques will help ensure the proper performance and longevity of the refractory lining.
Q:
Enhanced properties have been achieved in the latest advancements of monolithic refractories for the iron and steel industry. These advancements are aimed at withstanding the extreme temperatures and harsh conditions associated with iron and steel production processes. One notable advancement is the utilization of advanced bonding systems that offer exceptional strength and resistance to thermal shock. These systems, including nano-bonding technology, contribute to the overall improvement in the performance and durability of monolithic refractories. Another significant development is the introduction of low cement castables. These castables contain a reduced amount of cement, resulting in enhanced high-temperature strength and erosion resistance. This advancement proves particularly valuable in applications within the iron and steel industry where thermal cycling and mechanical stress are common. Furthermore, the composition of monolithic refractories has seen advancements. The incorporation of advanced raw materials, such as high-quality aggregates and additives, has led to improved thermal conductivity, corrosion resistance, and thermal insulation properties. These developments allow for more efficient and sustainable iron and steel production processes. Additionally, recent advancements have been focused on the development of self-flow castables. These castables possess excellent flowability, facilitating easy installation and maintenance of refractory linings. This advancement not only reduces installation time and costs but also ensures improved lining performance. In conclusion, the latest advancements in monolithic refractories for the iron and steel industry have resulted in improved performance, durability, and efficiency. These advancements enable the industry to enhance its production processes, minimize downtime, and increase overall productivity.
Q:
Monolithic refractories are engineered to endure high temperatures and harsh working conditions, making them perfect for applications involving thermal shock and mechanical stress. To begin with, monolithic refractories are designed with a high thermal conductivity, enabling them to rapidly absorb and distribute heat. This characteristic aids in reducing thermal gradients within the material and decreasing the likelihood of thermal shock. When faced with sudden temperature changes, the refractory material expands and contracts uniformly, preventing the formation of cracks and fractures. Additionally, these refractories possess exceptional thermal shock resistance due to their low thermal expansion coefficient. As a result, they are less prone to expanding or contracting when exposed to temperature fluctuations. Consequently, they can endure rapid temperature changes without suffering significant structural damage. Furthermore, monolithic refractories exhibit high mechanical strength, enabling them to withstand various forms of mechanical stress. Their formulation includes carefully selected raw materials and additives that enhance their load-bearing capacity and resistance to mechanical forces. This grants them the ability to bear the weight of surrounding materials and endure any external forces or vibrations present in the application environment. Moreover, monolithic refractories maintain good structural integrity and stability thanks to their dense and compact microstructure. Typically, these materials are created by combining fine powders, binders, and additives, which are mixed and shaped to form a solid and cohesive structure. This structure provides resistance against mechanical stress, preventing the refractories from crumbling or disintegrating under pressure. In conclusion, monolithic refractories withstand thermal shock and mechanical stress due to their high thermal conductivity, low thermal expansion coefficient, strong mechanical strength, and structural integrity. These properties establish them as reliable and durable materials for applications that require resistance to extreme temperatures and challenging operating conditions.
Q:
Enhancing energy efficiency in iron and steel production processes is a crucial role played by monolithic refractories. These refractories, which are unshaped materials, are utilized to line the components of furnaces, kilns, and other high-temperature equipment involved in the production of iron and steel. One method by which monolithic refractories contribute to energy efficiency is through their excellent insulation properties. These materials possess low thermal conductivity, effectively reducing heat transfer from the furnace or kiln to the surrounding environment. By minimizing heat loss, monolithic refractories aid in maintaining high temperatures within the production units, ultimately reducing the energy required to sustain the desired operating conditions. Moreover, monolithic refractories offer exceptional resistance to thermal shock and wear, ensuring the longevity of the lining materials. This durability diminishes the need for frequent repairs and replacements, resulting in less downtime and increased operational efficiency. Consequently, energy is conserved as the production units can continuously operate at optimal temperatures without interruptions. Additionally, monolithic refractories exhibit excellent resistance to chemical reactions, corrosion, and erosion caused by molten metals and slag. This resistance decreases the formation of cracks and defects in the lining, which can compromise the insulation and increase heat loss. By maintaining a robust and intact lining, monolithic refractories contribute to energy efficiency by minimizing heat escape and ensuring the efficient utilization of energy for the iron and steel production processes. Furthermore, the utilization of monolithic refractories allows for design flexibility in the construction of furnaces and kilns. Their ability to be shaped and applied in various configurations enables the creation of optimized lining structures that enhance heat transfer and combustion efficiency. This flexibility empowers engineers and operators to design and modify the production units to maximize energy efficiency and minimize energy wastage. In conclusion, monolithic refractories significantly contribute to energy efficiency in iron and steel production through their excellent insulation, durability, resistance to thermal and chemical degradation, and design flexibility. By reducing heat loss, minimizing repairs and replacements, and optimizing heat transfer, these refractories play a vital role in conserving energy and improving the overall sustainability of the iron and steel industry.
Q:
The specific requirements of monolithic refractories for continuous casting applications include high thermal shock resistance, excellent erosion resistance, good thermal conductivity, low shrinkage, and high refractoriness. These refractories must also have good flowability and workability to ensure easy installation and maintenance. Additionally, they should have a high degree of chemical stability to withstand the harsh conditions of molten metal and slag in continuous casting processes.
Q:
Monolithic refractories are used in the repair and maintenance of ladle and tundish linings by providing a durable and heat-resistant material that can withstand the harsh conditions of molten metal handling. These refractories are applied as a single, continuous lining, eliminating the need for individual bricks or tiles, which simplifies the repair and maintenance process. They can be easily shaped and installed in the desired areas, allowing for efficient repair of damaged sections. Monolithic refractories also offer excellent resistance to thermal shock, erosion, and corrosion, ensuring the longevity and reliability of ladle and tundish linings.
Q:
Monolithic refractories protect the lining of ladles and tundishes by forming a strong and durable barrier against high temperatures, chemical reactions, and mechanical stresses. These refractories are designed to be resistant to thermal shock and erosion, ensuring that the lining remains intact and unaffected by the molten metal or slag. They also provide insulation, minimizing heat loss and reducing energy consumption. Overall, monolithic refractories act as a reliable shield, extending the lifespan of the ladles and tundishes and preventing any detrimental effects on the lining.
Q:
The quality of iron and steel products is greatly influenced by monolithic refractories. These refractories are extensively used in the lining of furnaces and other high-temperature environments where iron and steel undergo processing. To begin with, monolithic refractories play a vital role in insulating and safeguarding the furnace lining from the intense heat generated during the manufacturing of iron and steel. By maintaining the desired temperature, these refractories ensure consistent and proper heating of the metal, thereby achieving the desired product quality. Inadequate insulation would result in significant heat loss, leading to inefficient energy consumption and inconsistent product quality. Additionally, monolithic refractories have a significant impact on the overall cleanliness of iron and steel. During the production process, impurities and slag are formed, which can contaminate the metal if not managed properly. Refractories with high resistance to slag penetration and corrosion prevent these impurities from infiltrating the metal, ensuring a cleaner and purer final product. Moreover, monolithic refractories also contribute to the mechanical strength and durability of the furnace lining. The lining must withstand the harsh conditions and repeated thermal shocks encountered during the production process of iron and steel. A sturdy and well-designed refractory lining can resist cracking, spalling, and erosion, thereby prolonging the furnace's lifespan and reducing the risk of downtime. In conclusion, monolithic refractories have a profound impact on the quality of iron and steel products. They provide thermal insulation, prevent contamination, and ensure the mechanical integrity of the furnace lining. Manufacturers can optimize their production processes, enhance product quality, and improve overall operational efficiency by selecting the appropriate refractory material and maintaining it correctly.
Q:
Monolithic refractories play a crucial role in enhancing the overall productivity of iron and steel plants in several ways. Firstly, their high thermal conductivity and insulation properties help to maintain and regulate the temperature inside the furnaces, ensuring efficient and consistent heat distribution. This facilitates the optimal melting and refining of iron and steel, reducing energy consumption and improving productivity. Additionally, monolithic refractories offer excellent resistance to chemical attacks, such as the corrosive effect of molten metals and slags. This resistance enables longer refractory lifespan, reducing downtime for repairs and replacements, and ultimately maximizing the plant's operational efficiency. Moreover, the monolithic nature of these refractories allows for easy installation and repair, minimizing the time and effort required for maintenance activities. This quick and efficient process further contributes to the overall productivity of iron and steel plants by reducing production disruptions. In summary, monolithic refractories enhance the overall productivity of iron and steel plants by providing efficient heat management, superior chemical resistance, and easy maintenance, leading to improved energy efficiency, reduced downtime, and enhanced operational efficiency.

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