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 prevent thermal shock in the iron and steel industry?
- The iron and steel industry heavily relies on monolithic refractories to prevent thermal shock. These refractories offer exceptional thermal insulation and resistance to extreme temperatures, playing a vital role in maintaining the integrity of the refractory lining. Thermal shock occurs when there is a sudden and significant change in temperature, leading to stress and cracks in the refractory lining. Given the extremely high temperatures that can be reached in the iron and steel industry, the risk of thermal shock is particularly pronounced. To combat this, monolithic refractories possess a low thermal conductivity, enabling them to effectively insulate against rapid temperature fluctuations. This insulation property allows them to endure the extreme temperatures involved in the iron and steel production process without compromising their structural integrity. Moreover, monolithic refractories are specifically engineered to exhibit high thermal shock resistance. This means they can effectively absorb and distribute the thermal stresses caused by temperature variations, thereby minimizing the likelihood of cracking or spalling. Aside from their exceptional thermal insulation and shock resistance, monolithic refractories also demonstrate outstanding corrosion and erosion resistance. This is especially important in the corrosive environment of the iron and steel industry, where molten metals, slag, and gases are present. By providing a dependable and long-lasting lining in furnaces, ladles, and other equipment utilized in the iron and steel industry, monolithic refractories ensure that thermal shock is mitigated. Consequently, this helps to maintain the efficiency and productivity of the production process while extending the lifespan of the equipment.
- Q:What are the key properties of gunning mixes used for monolithic refractory repairs?
- The key properties of gunning mixes used for monolithic refractory repairs are high strength, good adhesion, excellent workability, and high resistance to thermal shock and abrasion. These properties ensure that the gunning mix can withstand the intense heat and harsh conditions of refractory applications, providing a durable and long-lasting repair solution.
- Q:What are the key considerations when selecting monolithic refractories for tundish applications?
- When selecting monolithic refractories for tundish applications, there are several key considerations that should be taken into account. First and foremost, the refractory material must have excellent thermal shock resistance. Tundishes are subjected to extreme temperature fluctuations, as molten metal is poured into them and then drained out. A refractory material with poor thermal shock resistance will quickly degrade and fail under these conditions, leading to costly repairs and downtime. Another important consideration is the refractory's resistance to chemical attack. Tundishes are often exposed to aggressive chemical environments, as they come into contact with molten metal and various slag compositions. The refractory material must be able to withstand these corrosive elements and maintain its integrity over time. Additionally, the refractory's mechanical strength is crucial. Tundishes are subject to physical stresses, such as the weight of the molten metal and the movement of the tundish itself. A weak refractory material will be prone to cracking and failure, jeopardizing the overall performance and longevity of the tundish. The ease of installation and repair should also be considered. Monolithic refractories are typically cast or gunned in place, so it is important to select a material that can be easily applied and shaped to fit the tundish design. Similarly, if repairs are necessary, the refractory material should be capable of being patched or replaced without significant disruption to operations. Finally, cost is always a consideration. While it is important to select a high-quality refractory material that meets the specific requirements of the tundish, it is also necessary to consider the overall cost-effectiveness. This includes the initial material cost, installation and repair expenses, and the expected lifespan of the refractory. In summary, the key considerations when selecting monolithic refractories for tundish applications include thermal shock resistance, chemical resistance, mechanical strength, ease of installation and repair, and cost-effectiveness. By carefully evaluating these factors, one can choose a refractory material that will provide optimal performance and durability in tundish applications.
- Q:How do monolithic refractories contribute to the overall efficiency of ladle transfer processes?
- Monolithic refractories play a crucial role in enhancing the overall efficiency of ladle transfer processes. These refractories are made of a single, homogeneous material, which allows for easy installation and maintenance. This feature significantly reduces downtime during the ladle transfer process, resulting in increased productivity. One way monolithic refractories contribute to efficiency is through their high thermal conductivity. Ladle transfer processes involve the transfer of molten metal, which generates immense heat. Monolithic refractories have excellent heat resistance, ensuring that they can withstand the extreme temperatures of the molten metal. This property prevents refractory failure and prolongs the lifespan of the ladle, leading to more efficient and uninterrupted ladle transfer operations. Additionally, monolithic refractories offer superior corrosion resistance. The corrosive nature of molten metal can cause significant damage to ladles over time. However, monolithic refractories are designed to withstand chemical attacks from molten metal, preventing the degradation of the ladle's integrity. As a result, ladles lined with monolithic refractories have a longer lifespan and require less frequent replacement, leading to cost savings and improved efficiency. Furthermore, the ability of monolithic refractories to conform to complex shapes and designs is another contributing factor to the efficiency of ladle transfer processes. Ladles come in various sizes and shapes, and the use of monolithic refractories allows for customized linings that perfectly fit the ladle's dimensions. This precise fit minimizes heat loss and maximizes energy efficiency during ladle transfer processes. Moreover, monolithic refractories offer excellent mechanical strength and resistance to thermal shock. Ladle transfer processes involve the handling and movement of ladles, which can subject refractories to mechanical stresses. The outstanding mechanical properties of monolithic refractories ensure their durability and prevent cracking or spalling, reducing the risk of refractory failure and improving the efficiency of ladle transfer operations. In summary, monolithic refractories contribute to the overall efficiency of ladle transfer processes by providing high thermal conductivity, corrosion resistance, precise lining fit, and excellent mechanical properties. These refractories enhance the ladle's durability, reduce downtime, and improve energy efficiency, resulting in cost savings and increased productivity in the steelmaking industry.
- Q:How do monolithic refractories withstand the chemical attacks in copper smelting applications?
- Monolithic refractories are able to withstand chemical attacks in copper smelting applications due to their unique composition and properties. These refractories are typically made from high-purity materials such as alumina, silica, or magnesia, which have excellent resistance to chemical reactions. Additionally, they are designed to have low porosity and high density, minimizing the penetration of corrosive substances into the refractory material. The monolithic nature of these refractories also eliminates joints and seams, reducing the chances of chemical attack. Overall, the combination of the refractory's composition, low porosity, and monolithic structure enables them to withstand the harsh chemical environment of copper smelting applications.
- Q:How does the composition of monolithic refractories impact their performance?
- Determining the performance of monolithic refractories is heavily influenced by their composition. These refractories are unshaped materials used to line furnaces, kilns, and other high-temperature equipment. Their installation convenience and ability to conform to complex shapes make them preferable over traditional brick and mortar refractories. Various components, such as aggregates, binders, and additives, constitute the composition of monolithic refractories. These constituents significantly impact the physical, mechanical, and thermal properties of the refractory material. Aggregates, which are the primary component, provide structural integrity to monolithic refractories. Alumina, silica, magnesia, and carbon are among the materials used for aggregates. Each aggregate possesses unique properties that determine the refractory's resistance to heat, chemical attack, and mechanical stress. For instance, alumina aggregates offer excellent resistance to high temperatures and chemical corrosion, while carbon-based aggregates have high thermal conductivity and are preferred for this reason. The addition of binders enhances the strength and cohesion of the refractory. Common binders include clay, calcium aluminate cement, and colloidal silica. The choice of binder depends on the desired strength, workability, and setting time of the refractory material. Additives are incorporated into the composition to improve specific properties. They can enhance the refractory's resistance to thermal shock, abrasion, or chemical attack. Additives like zirconium oxide, silicon carbide, and graphite are frequently used to enhance the performance of monolithic refractories in specific applications. The proper combination and proportion of these constituents are vital for achieving the desired performance of monolithic refractories. The composition affects the refractory's thermal conductivity, thermal expansion, density, porosity, and chemical resistance. For example, a higher alumina content improves resistance to high temperatures and chemical corrosion, while a higher silica content enhances insulation properties. In conclusion, the performance of monolithic refractories is significantly impacted by their composition. Careful consideration must be given to the selection of aggregates, binders, and additives to achieve desired properties and ensure optimal performance in specific high-temperature applications.
- Q:How are monolithic refractories different from conventional refractories?
- Monolithic refractories differ from conventional refractories in several ways. Firstly, conventional refractories are typically made from pre-formed shapes such as bricks or tiles, while monolithic refractories are unshaped and can be installed by casting, gunning, or ramming. This allows for greater flexibility in design and installation, as monolithic refractories can be shaped to fit any complex geometry or size requirement. Secondly, monolithic refractories have a higher degree of thermal shock resistance compared to conventional refractories. This means that they can withstand rapid changes in temperature without cracking or spalling. This property is particularly important in applications where the refractory is exposed to extreme temperature variations, such as in furnaces or kilns. Furthermore, monolithic refractories have superior corrosion resistance, which makes them more suitable for environments with acidic or alkaline conditions. They are also known for their excellent mechanical strength and abrasion resistance, making them ideal for applications where the refractory is subjected to high mechanical stresses or wear. Lastly, monolithic refractories offer better energy efficiency due to their lower thermal conductivity. This means that they can retain heat more effectively, resulting in reduced energy consumption and cost savings. Overall, the main differences between monolithic refractories and conventional refractories lie in their installation methods, thermal shock resistance, corrosion resistance, mechanical strength, and energy efficiency. These factors make monolithic refractories a preferred choice in many industrial applications where flexibility, durability, and performance are crucial.
- Q:How do monolithic refractories withstand thermal shock?
- Monolithic refractories possess unique properties and composition that enable them to endure thermal shock. Thermal shock occurs when there is a sudden alteration in temperature, leading to stress and potential damage to the refractory material. However, monolithic refractories are constructed to possess high resistance to thermal shock, and this is accomplished through various mechanisms. Firstly, the composition of monolithic refractories incorporates materials with low coefficients of thermal expansion. This implies that they undergo minimal alterations in size or volume when exposed to varying temperatures. This characteristic allows the refractory material to withstand thermal shock by minimizing the stress caused by temperature fluctuations. Secondly, monolithic refractories exhibit exceptional thermal conductivity. This quality enables them to efficiently transfer heat away from the hot regions, preventing localized overheating and diminishing the likelihood of thermal shock. The rapid dissipation of heat aids in maintaining a more even distribution of temperature within the refractory material, thereby reducing the chances of cracking or spalling. Furthermore, the binding agents employed in monolithic refractories play a vital role in enhancing their resistance to thermal shock. These binders provide strength to the refractory material and assist in preserving its integrity during thermal cycling. Additionally, the binders contribute to the refractory's ability to withstand thermal shock by reducing the permeability of the material, thus preventing the infiltration of hot gases or liquids that could cause damage. Moreover, the installation technique of monolithic refractories plays a significant role in their capacity to endure thermal shock. Typically, monolithic refractories are applied as a single, uninterrupted layer, eliminating the weak points such as joints and seams that exist in other refractory systems. This seamless installation method ensures superior resistance to thermal shock as there are no vulnerable points for cracks to propagate. In conclusion, monolithic refractories effectively withstand thermal shock through a combination of factors including their low coefficients of thermal expansion, high thermal conductivity, appropriate binding agents, and seamless installation techniques. These properties and design considerations enable monolithic refractories to proficiently handle rapid temperature changes and maintain their structural integrity, making them ideal for applications involving thermal cycling and extreme variations in temperature.
- Q:What are monolithic refractories and how are they different from other refractory materials?
- Monolithic refractories are a type of refractory material that is produced and applied in a single, unified form. Unlike other refractory materials, such as bricks or tiles, monolithic refractories are not pre-formed into specific shapes or sizes. Instead, they are generally composed of a mix of aggregates, binders, and additives, which are then installed in place and cured to form a solid, dense structure. One key difference between monolithic refractories and other refractory materials is their versatility and ease of installation. Traditional refractory bricks or tiles require skilled labor and careful assembly to create a lining or structure. Monolithic refractories, on the other hand, can be poured, sprayed, or gunned into place, allowing for a much faster and more efficient installation process. This makes them particularly suitable for complex shapes or areas that are difficult to access. Another difference lies in the physical properties of monolithic refractories. While bricks and tiles are typically characterized by their high mechanical strength and resistance to thermal shock, monolithic refractories can be tailored to exhibit a wide range of properties. They can be engineered to have excellent thermal insulation, superior corrosion resistance, or enhanced abrasion resistance, depending on the specific application requirements. This flexibility makes monolithic refractories suitable for a variety of industries, including steel, cement, glass, and petrochemical. Furthermore, monolithic refractories have the advantage of being able to expand and contract with temperature changes, unlike rigid brick structures. This thermal flexibility helps to minimize cracking and damage caused by thermal cycling, prolonging the lifespan of the refractory lining. Additionally, monolithic refractories offer better refractory integrity and reduced joint failure, as there are no seams or weak points that can be susceptible to thermal stresses. In summary, monolithic refractories are a versatile and convenient type of refractory material that can be customized to meet specific application requirements. Their ease of installation, thermal flexibility, and tailor-made properties make them distinct from other refractory materials such as bricks or tiles.
- Q:How are monolithic refractories installed and repaired in iron and steel plants?
- Monolithic refractories in iron and steel plants are typically installed through a process called gunning, where a specialized gunning machine is used to spray the refractory material onto the desired surface. The refractory material is mixed with water or a bonding agent to form a dense and durable lining. In terms of repairs, damaged or worn-out monolithic refractories are typically removed by mechanical means, such as jackhammers or pneumatic tools. The damaged area is then cleaned and prepared before new refractory material is applied using the gunning method. In some cases, patching materials may be used to repair smaller areas of damage. Overall, the installation and repair of monolithic refractories in iron and steel plants require skilled technicians and specialized equipment to ensure the optimum performance and longevity of the refractory lining.
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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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