Mould Powders / Continuous Casting Powders and Granules For Steel Mill
- 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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Quality Product, Order Online Tracking, Timely Delivery
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Product Description:
The Mould Powders are composed essentially of CaO-Al2O3-SiO2 with addition of fluxing agents and carbon.
Mold Powders have different functions:
Lubrication between the solidifying strand and mould wall
Control of heat transfer between the strand and mould
Thermal insulation of the liquid steel surface
Prevention of re-oxidation
Inclusion absorption
The above functions are controlled by the following properties:
Basicity
Viscosity
Melting speed
Melting behaviour
Crystallization
The choice of a mould powder depends on:
Mould size
Oscillation conditions
Casting speed
Steel grade
Technical Data:
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:What are the key properties of ramming mixes used for monolithic refractory installations?
- The key properties of ramming mixes used for monolithic refractory installations include high density, good flowability, high strength, excellent thermal shock resistance, chemical resistance, and low porosity. These properties ensure the ramming mix can be compacted easily during installation, withstand high temperatures without cracking, and resist chemical attacks from molten metals or corrosive gases. Additionally, low porosity helps to minimize heat loss and enhance the overall performance and longevity of the refractory lining.
- Q:What are the typical compositions of monolithic refractories?
- The typical compositions of monolithic refractories include high alumina, fireclay, silica, magnesia, and carbon-based materials. These compositions are combined with binders, additives, and aggregates to form the monolithic refractory materials.
- Q:How can the lifespan of monolithic refractories be extended in the iron and steel industry?
- The lifespan of monolithic refractories in the iron and steel industry can be extended through various measures. Firstly, proper installation and maintenance of the refractories is crucial. This includes ensuring that the refractories are correctly shaped and sized to fit the specific application, as well as using appropriate installation techniques and materials. Regular inspections should be conducted to identify any signs of wear or damage, and immediate repairs or replacements should be carried out to prevent further deterioration. Secondly, implementing effective heat management practices can significantly prolong the lifespan of monolithic refractories. This involves monitoring and controlling the temperature gradients within the refractory lining to prevent thermal shock and excessive thermal cycling. Adequate insulation and cooling systems should also be in place to maintain a stable and controlled environment. Furthermore, proper handling and operation of the equipment and processes can contribute to extending the refractory lifespan. Avoiding sudden temperature changes, minimizing mechanical stress and impact, and employing appropriate operating procedures can help reduce the wear and tear on the refractories. Additionally, utilizing advanced refractory materials and technologies can enhance the lifespan of monolithic refractories. The development and use of high-performance and specialized refractories, such as advanced ceramics or specialized coatings, can provide increased resistance to thermal and chemical degradation, ultimately extending their lifespan. Lastly, continuous research and development efforts should be undertaken to explore innovative solutions for refractory longevity in the iron and steel industry. Collaborating with suppliers, experts, and industry partners can help identify and implement new technologies and techniques that can improve the durability and performance of monolithic refractories. In summary, extending the lifespan of monolithic refractories in the iron and steel industry requires a combination of proper installation and maintenance, effective heat management, careful handling and operation, utilization of advanced materials, and ongoing research and development. By implementing these strategies, the iron and steel industry can optimize refractory performance and reduce downtime and costs associated with frequent replacements.
- Q:How do monolithic refractories withstand the thermal cycling in coke oven applications?
- Monolithic refractories are able to withstand the thermal cycling in coke oven applications due to their high thermal shock resistance and low thermal conductivity. They have a unique composition and structure that allows them to expand and contract without cracking or spalling under extreme temperature fluctuations. Additionally, their dense and homogeneous structure minimizes heat transfer, allowing them to maintain their integrity and strength even in the harsh conditions of coke oven operations.
- Q:How do monolithic refractories resist chemical corrosion in iron and steel applications?
- Monolithic refractories are highly resistant to chemical corrosion in iron and steel applications due to their unique characteristics and composition. These refractories are engineered with a combination of different materials such as aggregates, binders, and additives, which provide them with exceptional resistance to chemical attack. One key factor that contributes to their resistance is the use of high-quality raw materials. Monolithic refractories are typically made from high-alumina or alumina-silica aggregates, which have excellent resistance to chemical reactions. These aggregates are carefully selected to ensure they can withstand the harsh conditions encountered in iron and steel applications, including exposure to molten metal, slag, and various chemical compounds. Moreover, the binders used in monolithic refractories play a crucial role in their resistance to chemical corrosion. Common binders include clay, calcium aluminate cement, or colloidal silica. These binders help to hold the refractory materials together and provide additional protection against chemical attack. They form a dense and impermeable structure, which prevents corrosive substances from penetrating the refractory lining. Furthermore, monolithic refractories often incorporate additives that enhance their chemical resistance. These additives can include antioxidants, anti-spalling agents, and various other compounds that further protect the refractory lining from chemical attack. These additives help to neutralize corrosive elements, inhibit the formation of harmful compounds, and reduce the overall corrosion rate. Additionally, the unique installation method of monolithic refractories also contributes to their resistance to chemical corrosion. Unlike traditional brick refractories, monolithic refractories are installed as a single, continuous lining. This eliminates the need for joints or gaps that could potentially serve as weak points for chemical penetration. The monolithic nature of these refractories ensures a tight and seamless lining, reducing the vulnerability to chemical attack. Overall, the combination of high-quality raw materials, effective binders, and beneficial additives, along with the monolithic installation technique, grants monolithic refractories exceptional resistance to chemical corrosion in iron and steel applications. This resistance allows them to withstand the harsh conditions encountered in these industries, ensuring the longevity and efficiency of the refractory lining.
- Q:How are monolithic refractories manufactured?
- Manufacturing monolithic refractories is a specific process that consists of multiple steps. The initial step involves selecting and preparing raw materials, typically comprising aggregates, binders, and additives. Aggregates are chosen based on their chemical and physical properties, while binders are utilized to hold the aggregates together. Additives are incorporated to enhance specific properties of the refractory material. Once the raw materials are chosen, they are thoroughly mixed in precise proportions to create a uniform mixture. This mixture is then blended using different techniques such as dry or wet mixing, depending on the desired characteristics of the final product. Following the blending process, the subsequent step involves shaping the refractory material. This can be accomplished through various methods such as casting, gunning, ramming, or spraying. The selection of the method is based on the specific application and requirements of the refractory. After shaping, the refractory material undergoes a curing process. This entails drying the material at a controlled temperature to eliminate any excess moisture and promote the development of desired properties. Lastly, the cured refractory material is subjected to high temperatures in a kiln. This firing process further strengthens the refractory and enhances its ability to withstand heat and other harsh conditions. In summary, the manufacturing of monolithic refractories entails meticulous selection and preparation of raw materials, precise blending, shaping, curing, and firing procedures. This guarantees the production of superior-quality refractory materials capable of withstanding the extreme conditions encountered in various industrial applications.
- Q:How does the composition of monolithic refractories impact their performance?
- The composition of monolithic refractories plays a crucial role in determining their performance. Monolithic refractories are essentially unshaped refractory materials that are used to line furnaces, kilns, and other high-temperature equipment. They are preferred over traditional brick and mortar refractories due to their ease of installation and ability to conform to complex shapes. The composition of monolithic refractories includes various components such as aggregates, binders, and additives. The type and proportion of these constituents significantly influence the physical, mechanical, and thermal properties of the refractory material. Aggregates are the major component of monolithic refractories and provide the structural integrity. They can be made of various materials like alumina, silica, magnesia, and carbon. Each aggregate has its own unique properties that determine the refractory's resistance to heat, chemical attack, and mechanical stress. For example, alumina aggregates offer excellent resistance to high temperatures and chemical corrosion, while carbon-based aggregates are preferred for their high thermal conductivity. Binders are added to the mix to provide cohesion and improve the refractory's strength. Common binders include clay, calcium aluminate cement, and colloidal silica. The selection of binders depends on the desired strength, workability, and setting time of the refractory material. Additives are incorporated in the composition to enhance specific properties. They can improve the refractory's resistance to thermal shock, abrasion, or chemical attack. Additives like zirconium oxide, silicon carbide, and graphite are often used to enhance the performance of monolithic refractories in specific applications. The proper combination and proportion of these constituents are crucial for achieving the desired performance of monolithic refractories. The composition affects the refractory's thermal conductivity, thermal expansion, density, porosity, and chemical resistance. For instance, a higher alumina content would improve the refractory's resistance to high temperatures and chemical corrosion, while a higher silica content would enhance its insulating properties. In conclusion, the composition of monolithic refractories has a significant impact on their performance. The selection of aggregates, binders, and additives must be carefully considered to achieve the desired properties and ensure optimal performance in specific high-temperature applications.
- Q:How do monolithic refractories improve the efficiency of ladle and tundish preheating furnaces?
- Monolithic refractories greatly contribute to the efficiency of ladle and tundish preheating furnaces. These refractories, made from a single material, are easily installed, repaired, and replaced, making them versatile and cost-effective. The efficiency of these furnaces is improved thanks to the outstanding thermal insulation properties of monolithic refractories. With low thermal conductivity, they effectively retain heat and prevent its escape. This insulation capability ensures an efficient preheating process, reducing energy consumption and costs by minimizing heat loss. Additionally, monolithic refractories possess high thermal shock resistance, which is crucial in ladle and tundish preheating furnaces. These furnaces experience rapid temperature changes during the pouring of molten metal, which can lead to cracking or failure of traditional refractories. However, monolithic refractories are specifically designed to withstand thermal shock, remaining intact and maintaining their insulating properties even in extreme conditions. This durability reduces downtime and maintenance requirements, thus enhancing overall efficiency. Furthermore, monolithic refractories provide a seamless and uniform lining surface, improving heat transfer within the furnace. The absence of joints or seams reduces the risk of heat leakage and ensures even distribution of heat throughout the lining. This promotes uniform heating of the ladle or tundish, allowing for more efficient preheating and better temperature control. In conclusion, the use of monolithic refractories in ladle and tundish preheating furnaces results in improved efficiency due to their exceptional thermal insulation properties, high thermal shock resistance, and ability to provide a seamless and uniform lining. These refractories minimize heat loss, reduce energy consumption, and enhance the overall performance of the preheating process.
- Q:How do monolithic refractories contribute to the overall efficiency of iron and steel production?
- Monolithic refractories play a crucial role in enhancing the overall efficiency of iron and steel production. These refractories, which are made from a single material, provide exceptional thermal insulation, resistance to high temperatures, and excellent mechanical strength. By lining the furnaces, ladles, and other equipment used in the production process, monolithic refractories help in maintaining and regulating the required high temperatures for melting, refining, and shaping iron and steel. This insulation reduces heat loss, minimizes energy consumption, and ensures a more efficient and cost-effective production process. Additionally, the mechanical strength of monolithic refractories allows for better protection against wear and tear, resulting in increased equipment lifespan and reduced downtime for repairs and maintenance. Overall, the use of monolithic refractories significantly contributes to the efficiency, productivity, and sustainability of the iron and steel production industry.
- Q:How do monolithic refractories contribute to reducing downtime in iron and steel plants?
- Monolithic refractories contribute to reducing downtime in iron and steel plants by providing enhanced durability and resistance to high temperatures, chemical corrosion, and mechanical wear. These refractories can be quickly and easily installed, repaired, or replaced, minimizing the time required for maintenance and reducing production interruptions. Their versatile and customizable nature allows for efficient lining of various equipment, such as furnaces, ladles, and converters, ensuring a continuous and uninterrupted production process.
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Mould Powders / Continuous Casting Powders and Granules For Steel Mill
- 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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