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 resist corrosion from molten metals?
- Monolithic refractories resist corrosion from molten metals due to their inherent chemical composition and physical properties. These refractories are made using high-quality materials that possess excellent resistance to chemical attack and high temperatures. They are designed to have a dense and compact structure, which helps in preventing the penetration of molten metals and minimizing the reaction between the refractory and the metal. Additionally, monolithic refractories often contain additives or binders that enhance their resistance to corrosion, making them highly effective in withstanding the aggressive nature of molten metals.
- Q: How are monolithic refractories used in the repair and maintenance of ladles and tundishes?
- The steel industry extensively utilizes monolithic refractories for the repair and maintenance of ladles and tundishes. These refractories are specifically designed to endure the extreme conditions encountered during the steelmaking process, including high temperatures, thermal shock, and chemical erosion. In the case of ladle repair, monolithic refractories are employed to line the inner walls. Ladles are exposed to intense heat and corrosive molten metal, and the refractory lining serves as insulation and protection against these harsh circumstances. Additionally, the lining helps to maintain the desired temperature of the molten metal, ensuring it remains in an appropriate state for processing. Regarding tundishes, monolithic refractories are used to line the bottom, sides, nozzle, and impact pad. Tundishes are responsible for distributing molten metal to multiple casting molds and are subject to high temperatures and thermal shocks. The refractory lining helps to sustain the necessary temperature and prevent any leakage of molten metal. During the repair and maintenance process, monolithic refractories are applied as dense, high-strength materials that are easy to shape and install. They can be formed into various shapes, such as bricks, castables, and gunning mixes, depending on the specific requirements of the ladle or tundish. These refractories are frequently applied using specialized techniques, such as gunning or casting, to ensure proper adhesion and durability. In addition to their thermal and chemical resistance properties, monolithic refractories also possess excellent mechanical strength and resistance to abrasion. This is particularly crucial in ladles and tundishes, as they experience constant wear and tear from the movement of molten metal and the handling of refractory materials during repair and maintenance. Overall, monolithic refractories play a vital role in the repair and maintenance of ladles and tundishes in the steel industry. They provide the necessary insulation, protection, and durability required to withstand the demanding conditions of steelmaking.
- Q: How do monolithic refractories perform in reheating furnace roof applications?
- Monolithic refractories are highly effective in reheating furnace roof applications. These refractories are known for their excellent thermal shock resistance, which is crucial in the extreme temperature conditions inside a reheating furnace. They can withstand rapid temperature changes without cracking or spalling, ensuring the longevity and durability of the furnace roof. Additionally, monolithic refractories offer superior insulation properties, which help in maintaining the desired temperature inside the furnace. These refractories have low thermal conductivity, preventing heat loss and reducing energy consumption. This not only improves the energy efficiency of the furnace but also contributes to cost savings for the operators. Furthermore, monolithic refractories provide excellent resistance to chemical attacks from gases and molten metals present in the furnace environment. They are designed to withstand corrosive atmospheres and prevent the penetration of harmful substances, thus prolonging the life of the roof refractory. Moreover, monolithic refractories offer easy installation and repair options. Their ability to be cast or gunned in place allows for a seamless and precise application to the roof structure. This feature also enables quick and efficient repairs or maintenance, minimizing downtime and production losses. In conclusion, monolithic refractories are a reliable and efficient choice for reheating furnace roof applications. Their exceptional thermal shock resistance, insulation properties, chemical resistance, and ease of installation make them an ideal solution for maintaining the structural integrity and performance of the furnace roof.
- Q: How do monolithic refractories withstand high temperatures and thermal shocks?
- Monolithic refractories are able to withstand high temperatures and thermal shocks due to their unique composition and design. These refractories are made from a single piece or structure, hence the term "monolithic". This structural integrity allows them to resist the extreme heat and sudden temperature changes experienced in high-temperature applications. One key factor that enables monolithic refractories to withstand high temperatures is the use of high-quality raw materials. These materials are carefully selected for their ability to withstand heat and thermal stress. Common components include silica, alumina, magnesia, and other refractory minerals with high melting points. Additionally, the manufacturing process plays a crucial role in enhancing the thermal resistance of monolithic refractories. The raw materials are mixed with binders, such as clay or cement, to form a homogenous mixture. This mixture is then shaped and installed in its final position, either by pouring or gunning, depending on the application. The binder ensures that the refractory maintains its shape and integrity during thermal cycling. Furthermore, monolithic refractories possess excellent thermal conductivity and low thermal expansion properties. This means that they can efficiently transfer and dissipate heat, minimizing the risk of thermal stress and cracking. The low thermal expansion also reduces the likelihood of spalling or delamination, which is crucial for withstanding thermal shocks. Another factor contributing to the high-temperature resistance of monolithic refractories is their ability to form a protective layer or slag at the surface. This layer acts as a barrier, preventing the refractory from direct contact with corrosive materials or aggressive atmospheres. It helps to improve the refractory's longevity and resistance to thermal shocks. Overall, the combination of high-quality raw materials, careful manufacturing techniques, and beneficial thermal properties enables monolithic refractories to withstand high temperatures and thermal shocks. These refractories are widely used in various industries, including steel, cement, glass, and petrochemical, where they serve as reliable linings in furnaces, kilns, and other high-temperature equipment.
- Q: Can monolithic refractories be used for the lining of blast furnace runners and troughs?
- Yes, monolithic refractories can be used for the lining of blast furnace runners and troughs. Monolithic refractories are versatile and can be formed into any shape or size, making them suitable for lining complex structures such as blast furnace runners and troughs. Additionally, monolithic refractories offer excellent thermal shock resistance and high mechanical strength, which are essential properties for withstanding the extreme conditions inside a blast furnace.
- Q: What are the recommended curing and drying procedures for monolithic refractories?
- The recommended curing and drying procedures for monolithic refractories typically involve a gradual heating process to ensure proper bonding and removal of any moisture. This process usually starts with a preheat at a low temperature to eliminate any residual water, followed by a controlled temperature increase over a specific duration to achieve the desired strength and stability. It is essential to follow the manufacturer's guidelines and consider the specific composition and thickness of the refractory material to ensure optimal curing and drying.
- Q: What are the key properties of patching mixes used for monolithic refractory repairs?
- The key properties of patching mixes used for monolithic refractory repairs include high thermal conductivity, excellent adhesion, good workability, high strength, resistance to thermal shock, and suitable setting and drying times. These properties ensure effective repairs and long-lasting performance in high-temperature applications.
- Q: How do monolithic refractories provide thermal insulation in the iron and steel industry?
- Monolithic refractories play a crucial role in providing thermal insulation in the iron and steel industry. These refractories are commonly used to line the furnaces and other high-temperature equipment used in the production processes. One way monolithic refractories provide thermal insulation is by their ability to withstand high temperatures without degrading or melting. They are designed to have high heat resistance, which allows them to be used in environments where temperatures can reach several thousand degrees Celsius. By withstanding these extreme temperatures, the refractories prevent the transfer of heat to the surrounding structure, thus providing insulation. Another way monolithic refractories provide thermal insulation is through their low thermal conductivity. These materials have a low thermal conductivity, meaning they are not efficient in conducting heat. Instead, they trap the heat within their structure and minimize its transfer to the surrounding equipment or environment. This characteristic helps to maintain the temperature inside the furnaces and other high-temperature equipment, allowing for efficient and controlled metal production. Furthermore, monolithic refractories can be applied as a thick lining layer, which creates an additional barrier between the high-temperature environment and the surrounding equipment. The thickness of the refractory lining helps to minimize heat transfer and acts as a buffer, reducing the impact of high temperatures on the structural integrity of the equipment. In addition to providing thermal insulation, monolithic refractories also offer excellent resistance to chemical attack and mechanical wear, which are common challenges in the iron and steel industry. This resistance ensures the longevity of the refractory lining, allowing for consistent and reliable insulation over time. Overall, monolithic refractories provide thermal insulation in the iron and steel industry through their high-temperature resistance, low thermal conductivity, thick lining layer, and resistance to chemical attack and mechanical wear. These properties contribute to maintaining the desired temperature inside the equipment and protecting the surrounding structure from the intense heat generated during metal production processes.
- Q: How do monolithic refractories perform in torpedo ladle applications?
- Monolithic refractories are commonly used in torpedo ladle applications due to their excellent performance and durability. Torpedo ladles are used in the steelmaking process to transport and pour molten metal from the blast furnace to the steelmaking furnace. Monolithic refractories, also known as unshaped refractories, are made from a single material and can be applied as a single, cohesive mass. This makes them highly versatile and easy to install in the torpedo ladle. In torpedo ladle applications, monolithic refractories offer several advantages. First and foremost, they have high heat resistance, allowing them to withstand the extreme temperatures and thermal shocks experienced during the transfer and pouring of molten metal. This ensures that the refractories do not crack or fail under these harsh conditions. Additionally, monolithic refractories have excellent corrosion resistance properties, which is crucial in torpedo ladles where the molten metal can be highly corrosive. They are able to withstand the aggressive chemical environment and prevent chemical reactions that could lead to refractory deterioration. Moreover, monolithic refractories have good thermal insulation properties, reducing heat loss from the molten metal and promoting energy efficiency. This helps to maintain the desired temperature of the metal, ensuring optimal steelmaking conditions. Furthermore, monolithic refractories offer good mechanical strength and resistance to abrasion, making them highly suitable for torpedo ladle applications where the refractory lining is subjected to mechanical stress and wear. Overall, monolithic refractories perform exceptionally well in torpedo ladle applications due to their high heat resistance, corrosion resistance, thermal insulation properties, and mechanical strength. They are able to withstand the extreme conditions and provide a reliable and long-lasting lining for torpedo ladles in the steelmaking industry.
- Q: How do monolithic refractories improve the efficiency of ladle and tundish lining systems?
- Monolithic refractories improve the efficiency of ladle and tundish lining systems by providing superior thermal insulation, excellent resistance to thermal shock, and higher mechanical strength compared to traditional brick or castable linings. This results in reduced heat loss, improved temperature control, and increased refractory life, ultimately leading to higher productivity and cost savings in steelmaking operations.
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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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