Refractory Brick purging plug for BOF and EAF
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 set
- Supply Capability:
- 50000 set/month
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purging plug Raw materials
Ladle permeable brick has been in the leading position in domestic and abroad over years. We have developed the series of corundum, chromium corundum, low silicon chromium corundum and corundum spinel one after another.
Customized purging plug
They can be designed and produced types of straight hole, directional slit, directional labyrinth, girth shape and interior and exterior integral split etc according to users’ request. Permeable flow rate of products can be designed upon customers’ request and can be adjusted in a wide range. The blowing opening rate is high.
purging plug Characters
Continuous casting Ladle Porous Block
High alumina and MgO content
High stability.
Thermal shock resisitance.
High life span
purging plug Physical and chemical indexes
Brand | TQZ-1 | TQZ-2 | |
Chemical composition/%,≥ | Al2O3+Cr2O3 | 92 | |
Al2O3+MgO | 92 | ||
Bulk density g/cm³ ≥ | 3 | 3 | |
Crushing strength /Mpa≥ | 1500°C×3h | 100 | 80 |
Modulus of rupture/Mpa≥ | 1500°C×3h | 20 | 15 |
Firing linear change % | 1500°C×3h | 0~+0.3 | 0~+0.4 |
Penetration gas flux (0.4Mpa)/m³ h-1 | 12~60 | 12~60 | |
Factory productivity
Based on 180,000 TON annual productivity and advanced production equipment, we have build deep cooperation relationship with Vietnam, Nigeria, Tailand, Saudi Arabia, Iran, Turkey, etc.
- Q:What are the key characteristics of monolithic refractories for electric arc furnace applications?
- Monolithic refractories for electric arc furnace applications have several key characteristics that make them suitable for the harsh conditions and high temperatures encountered in these environments. Firstly, monolithic refractories offer excellent thermal shock resistance. Electric arc furnaces operate at extremely high temperatures, and the rapid temperature changes that occur during the melting and refining processes can cause significant thermal stress. Monolithic refractories are designed to withstand these thermal shocks without cracking or spalling, ensuring the longevity and performance of the lining. Secondly, monolithic refractories have high resistance to chemical attack. Electric arc furnaces involve the melting and refining of various metals and alloys, which can create highly corrosive atmospheres. Monolithic refractories are formulated with chemically inert materials and additives that provide resistance to the corrosive effects of molten metals and slag, protecting the lining from chemical degradation. Another important characteristic of monolithic refractories for electric arc furnace applications is their high refractoriness. Refractoriness refers to the ability of a material to retain its strength and integrity at high temperatures. Electric arc furnaces typically operate at temperatures above 1500°C, and monolithic refractories are designed to withstand these extreme conditions without significant loss of properties or degradation. Furthermore, monolithic refractories offer good thermal conductivity. This property allows for efficient heat transfer throughout the lining, ensuring uniform heating and melting of the charge material. It also helps to minimize hot spots and thermal gradients, which can lead to uneven wear and premature failure of the lining. Lastly, monolithic refractories are known 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 complex masonry work. This not only saves time and labor but also allows for easy maintenance and repair of the lining, reducing downtime and improving overall furnace efficiency. In summary, the key characteristics of monolithic refractories for electric arc furnace applications include excellent thermal shock resistance, high chemical resistance, high refractoriness, good thermal conductivity, and ease of installation and repair. These properties make monolithic refractories ideal for withstanding the harsh conditions and demanding requirements of electric arc furnace operations.
- Q:What are the key innovations in monolithic refractories for the iron and steel industry?
- Monolithic refractories play a critical role in the iron and steel industry, providing lining materials for various high-temperature processes such as blast furnaces, ladles, and converters. Over the years, several key innovations have emerged in the field of monolithic refractories, addressing specific challenges and improving the overall performance of these linings. One of the significant innovations in monolithic refractories is the development of low cement and ultra-low cement castables. These castables contain reduced amounts of cement, resulting in improved properties such as higher hot strength, better resistance to thermal shock, and enhanced resistance to chemical attack. By reducing the cement content, the refractory can achieve higher density, reduced porosity, and increased mechanical strength, leading to improved durability and longer service life. Another innovation in monolithic refractories is the introduction of self-flowing castables. These castables are designed to have excellent flowability and can be easily installed by pouring or pumping, eliminating the need for manual vibration. Self-flowing castables offer advantages such as reduced installation time, improved lining quality, and better performance in complex geometries or areas that are difficult to access. In recent years, advancements in nanotechnology have also influenced the development of monolithic refractories. Nanoparticles, such as nano-sized additives and binders, are being incorporated into refractory compositions to enhance their properties. These nanoparticles can improve the refractory's mechanical strength, thermal conductivity, and corrosion resistance. Additionally, the use of nanotechnology allows for better control over the microstructure of refractories, resulting in optimized performance and increased lifespan. The development of high-performance monolithic refractories has also been driven by the need for improved energy efficiency and reduced environmental impact. Insulating castables, for example, have been developed to provide excellent thermal insulation properties, resulting in reduced heat loss and energy consumption in various applications. These refractories help to increase energy efficiency, lower production costs, and minimize greenhouse gas emissions. Furthermore, the use of advanced installation techniques, such as gunning and shotcreting, has revolutionized the application of monolithic refractories. These techniques enable faster and more precise installation, reducing downtime and improving productivity. Additionally, robotic application systems have been introduced, allowing for automated and consistent refractory installation, ensuring high-quality linings with minimal human intervention. In conclusion, the key innovations in monolithic refractories for the iron and steel industry include the development of low cement and ultra-low cement castables, self-flowing castables, the incorporation of nanotechnology, the introduction of high-performance insulation materials, and advancements in installation techniques. These innovations have significantly improved the performance, durability, energy efficiency, and installation processes of monolithic refractories, contributing to the overall efficiency and competitiveness of the iron and steel industry.
- Q:What are the different techniques for installing monolithic refractories?
- Installing monolithic refractories can be accomplished using various techniques, each with its own advantages and suitability for different applications. Some commonly employed methods are as follows: 1. Casting: This involves creating a slurry by mixing the refractory material with water or a binder. The resulting mixture is then poured into molds or directly onto the prepared surface. Once set and hardened, it forms a solid monolithic structure. 2. Gunning: By utilizing a gunning machine, the refractory material is sprayed onto the surface. The material is combined with water or a binder to form a wet mix, which is then propelled onto the surface at high velocity. Gunning is commonly used for on-site repairs or lining larger areas. 3. Ramming: In this technique, the refractory material is compacted into place using a pneumatic or manual ramming tool. Prior to ramming, the material is typically preheated to decrease moisture content and enhance workability. Ramming is often employed for lining smaller areas or filling gaps between bricks or precast shapes. 4. Shotcreting: Similar to gunning, shotcreting involves using a dry mix of refractory material. The dry mix is combined with water or a binder just before being sprayed onto the surface using a high-pressure nozzle. Shotcreting is frequently used for lining larger areas or creating intricate shapes. 5. Troweling: This technique entails applying the refractory material onto the surface using a trowel or similar tool. The material used is typically a wet mix that is spread and smoothed manually. Troweling is commonly employed for patching or repairing small areas, as well as for adding finishing touches. 6. Vibrating: By using a vibrating tool or vibrator, the refractory material is compacted and any air pockets are eliminated. Vibrating is often used to improve the density and strength of the monolithic refractory after it has been installed using other techniques. It is essential to consider various factors, such as the type of refractory material, the size and shape of the area to be lined, and the specific requirements of the application when selecting the appropriate technique. Additionally, proper surface preparation and adherence to installation guidelines are crucial to ensure the effectiveness and longevity of the monolithic refractory.
- Q:How are monolithic refractories different from traditional brick refractories?
- Monolithic refractories differ from traditional brick refractories in several ways. Firstly, monolithic refractories are made from a single, homogeneous material, while traditional brick refractories are made from individual bricks that are assembled together. This difference in construction allows monolithic refractories to have a more uniform and consistent structure, which can enhance their performance and durability. Secondly, monolithic refractories are typically easier to install compared to traditional brick refractories. Since they are made from a single material, they can be poured or sprayed into place, eliminating the need for precise bricklaying and mortar application. This ease of installation saves time and labor during construction or repair projects. Additionally, monolithic refractories often have superior thermal shock resistance compared to traditional brick refractories. The homogeneous structure of monolithic refractories allows them to expand and contract more uniformly under thermal stress, reducing the risk of cracking and failure. This makes monolithic refractories more suitable for applications where rapid temperature changes occur, such as in furnaces or kilns. Furthermore, monolithic refractories can offer better resistance to chemical attacks and erosion. Traditional brick refractories may have joints and gaps between bricks, which can become vulnerable to chemical reactions or erosion over time. Monolithic refractories, on the other hand, have a seamless structure that minimizes the risk of chemical penetration and erosion, enhancing their longevity and performance. Overall, monolithic refractories offer advantages in terms of uniformity, ease of installation, thermal shock resistance, and chemical resistance compared to traditional brick refractories. These differences make monolithic refractories a preferred choice for many industrial applications where high temperatures and harsh environments are present.
- Q:How are monolithic refractories used in the repair and maintenance of ladle and tundish covers?
- Due to their excellent thermal resistance and durability, monolithic refractories are commonly utilized for repairing and maintaining ladle and tundish covers. These covers play a crucial role in the containment of molten metal and the prevention of heat loss during the steelmaking process. When exposed to high temperatures and thermal cycling, ladle and tundish covers can undergo wear and tear, resulting in cracks, spalling, or even complete failure. This is where monolithic refractories come into play. Monolithic refractories are refractory materials that are not shaped and can be easily molded and applied to damaged areas of ladle and tundish covers. They can be cast, gunned, or sprayed onto the surface, enabling quick and efficient repairs. Typically, these refractories consist of a matrix material, such as alumina, silica, or magnesia, along with various additives and bonding agents. The specific composition depends on the application requirements and severity of operating conditions. The repair process begins by identifying the damaged areas of the ladle or tundish cover. Any loose or damaged refractory material is removed, and the surface is prepared for the application of the monolithic refractory. This may involve cleaning, roughening, or even preheating the surface, depending on the specific requirements. The monolithic refractory is then mixed with water or a suitable binder to achieve a workable consistency. It is then applied to the damaged areas using the appropriate method, such as casting or spraying. After application, the refractory material is allowed to dry and cure, typically through controlled heating. Once cured, the monolithic refractory forms a robust and durable lining that can withstand the high temperatures, thermal cycling, and chemical reactions occurring during ladle and tundish operation. It provides excellent thermal insulation, minimizing heat loss and reducing energy consumption. Moreover, monolithic refractories exhibit superior resistance to slag, metal penetration, and erosion, ensuring extended service life for ladle and tundish covers. They also possess good thermal shock resistance, enabling them to endure rapid temperature changes without cracking or spalling. In conclusion, monolithic refractories are indispensable for repairing and maintaining ladle and tundish covers due to their thermal resistance, durability, and ease of application. Their ability to withstand high temperatures, thermal cycling, and chemical reactions ensures the integrity and efficiency of ladle and tundish operations in the steelmaking industry.
- Q:What are the benefits of using monolithic refractories in the iron and steel industry?
- Using monolithic refractories in the iron and steel industry has several advantages. Firstly, they have excellent thermal shock resistance, meaning they can withstand extreme temperature changes without cracking or spalling. This is crucial in an industry where materials are exposed to high temperatures during processes such as melting, casting, and heat treatment. Secondly, monolithic refractories have superior corrosion resistance, making them highly durable against the corrosive effects of molten metals and slag. This is particularly important in the iron and steel industry, where materials come into contact with aggressive molten iron, steel, and various chemical compounds. Furthermore, monolithic refractories provide excellent mechanical strength and abrasion resistance. They can withstand mechanical stress, vibrations, and impacts commonly encountered in the iron and steel industry. This ensures a longer lifespan for the refractories, reduces downtime for repairs or replacements, and improves overall operational efficiency. Additionally, monolithic refractories offer ease of installation and repair. Unlike traditional refractory bricks that require complex and time-consuming masonry work, monolithic refractories can be quickly and easily installed using simple methods such as casting, gunning, or spraying. This saves time and labor costs during initial installation and subsequent maintenance or repairs. Moreover, monolithic refractories provide flexibility in design and application. They can be customized to specific shapes and sizes, allowing for tailored linings in different parts of the iron and steel manufacturing process. This versatility enhances the overall efficiency and effectiveness of refractory linings, optimizing production output and ensuring consistent quality of the finished iron and steel products. In conclusion, there are numerous benefits to using monolithic refractories in the iron and steel industry. They offer exceptional thermal shock resistance, corrosion resistance, mechanical strength, and abrasion resistance. They are also easy to install and repair, and their flexibility allows for customized designs. Overall, monolithic refractories contribute to improved productivity, reduced downtime, and enhanced product quality in the iron and steel industry.
- Q:How do monolithic refractories contribute to reducing emissions in iron and steel processes?
- Monolithic refractories play a crucial role in reducing emissions in iron and steel processes by providing a more efficient and sustainable lining solution compared to traditional brick refractories. Firstly, monolithic refractories are characterized by their homogeneous structure, which allows for easier installation and repair. This feature reduces the downtime required for maintenance, resulting in increased productivity and ultimately lower emissions. In contrast, brick refractories require more extensive labor and time-consuming procedures for installation and repair, leading to longer shutdown periods and increased emissions. Moreover, monolithic refractories exhibit superior thermal insulation properties. By minimizing heat loss from the furnace or kiln, they enable higher energy efficiency and reduce the fuel consumption required for achieving the desired temperature. This reduction in fuel usage directly translates to lower emissions of greenhouse gases, such as carbon dioxide, contributing to the overall environmental sustainability of iron and steel processes. Additionally, monolithic refractories offer excellent resistance to thermal and chemical wear, enhancing the durability and lifespan of the lining. This durability reduces the frequency of refractory replacement, resulting in reduced waste generation and resource consumption. By extending the service life of the lining, monolithic refractories contribute to reducing the environmental impact associated with the production and disposal of refractory materials. Furthermore, monolithic refractories can be formulated with specialized compositions and additives to enhance their resistance to corrosion and erosion, common challenges in iron and steel processes. By minimizing the wear and tear on the refractory lining, they help maintain the integrity of the furnace or kiln, preventing the leakage of harmful gases and pollutants that would otherwise contribute to emissions. In summary, monolithic refractories contribute to reducing emissions in iron and steel processes through their ease of installation and repair, superior thermal insulation properties, increased durability, and resistance to corrosion and erosion. By optimizing energy efficiency, minimizing downtime, and reducing waste generation, monolithic refractories offer a sustainable solution for the industry, aligning with the global efforts to combat climate change and promote environmental stewardship.
- Q:How do monolithic refractories resist erosion from molten metals and slags?
- Monolithic refractories, characterized by their ability to withstand erosion caused by molten metals and slags, are constructed using premium materials such as alumina, magnesia, and silica. These materials possess exceptional resistance to elevated temperatures and chemical attacks, enabling them to endure the corrosive nature of molten metals and slags. The dense composition of monolithic refractories prevents the infiltration of molten metals and slags. The compact structure acts as a physical barrier, restricting the contact between the refractory material and the molten substances. Moreover, monolithic refractories can be fortified with additives or binders that enhance their erosion resistance. These additives, such as silicon carbide, graphite, or other strengthening agents, provide additional durability and erosion resistance. Additionally, monolithic refractories can be customized with specific shapes and features to minimize erosion. For instance, the refractory lining in furnaces can be designed with curved contours or baffles to redirect the flow of molten metals and slags, reducing their impact on the refractory surface. Ultimately, the combination of top-quality materials, compact structure, additives, and tailored designs empowers monolithic refractories to effectively combat erosion caused by molten metals and slags. This resistance ensures the long-lasting and resilient performance of refractory linings in industrial settings where high temperatures and corrosive environments prevail.
- Q:How are monolithic refractories installed and repaired in iron and steel production facilities?
- Monolithic refractories play a crucial role in iron and steel production facilities by offering insulation and protection against high temperatures, chemical corrosion, and mechanical wear. To install and repair these refractories, careful planning, expertise, and adherence to safety protocols are necessary. To begin installation, the surface must be prepared by eliminating loose material and cleaning the area thoroughly. This step guarantees proper adhesion of the refractory material and may also involve roughening or texturing the surface for better bonding. Next, a workable consistency is achieved by mixing the monolithic refractory material with water or a binder. The material is then applied to the prepared surface using techniques like casting, gunning, ramming, or troweling. The choice of application method depends on factors such as the type of refractory material, repair area, and desired outcome. During installation, it is vital to carefully follow the manufacturer's instructions regarding mixing ratios, curing times, and drying temperatures. Improper installation can result in reduced refractory performance, premature failure, and safety hazards. Repairing monolithic refractories in iron and steel production facilities is an ongoing process due to the harsh operating conditions and mechanical stresses they endure. It is crucial to promptly address any signs of damage or wear to prevent further deterioration. The first step in the repair process is to assess the extent of the damage. This can be achieved through visual inspection, thermal imaging, or non-destructive testing techniques. Once the damage is identified, the appropriate repair method can be determined. Minor repairs can often be accomplished using patching materials that have a composition similar to the original refractory. These materials are mixed with water or a binder to form a paste, which is then applied to the damaged area and allowed to cure. For more extensive repairs, the damaged refractory material may need to be completely removed using mechanical methods like chipping, grinding, or cutting. After removing the damaged material, the surface is prepared as mentioned earlier, and new refractory material is installed using the appropriate application method. It is important to note that the repair process should be carried out by trained personnel with expertise in refractory installation and repair. Safety precautions, such as wearing protective clothing, using proper tools, and following established procedures, should always be observed. In conclusion, the installation and repair of monolithic refractories in iron and steel production facilities necessitate careful planning, adherence to manufacturer's instructions, and expertise in refractory materials. By following proper procedures and promptly addressing any damage, these facilities can ensure the longevity and efficiency of their refractory linings, ultimately contributing to the smooth operation of their production processes.
- Q:How are monolithic refractories different from traditional refractory bricks?
- Monolithic refractories, unlike traditional refractory bricks, are composed of a single, homogeneous structure. This structural distinction leads to several differences between the two. Firstly, monolithic refractories provide greater flexibility and versatility in terms of shape and installation. They can be easily molded and shaped to fit specific applications and complex geometries, making them ideal for lining furnaces, kilns, and other high-temperature equipment. Secondly, monolithic refractories have superior thermal shock resistance compared to traditional refractory bricks. Their uniform structure allows for better heat distribution, minimizing the risk of thermal stress and cracking. This makes them suitable for applications with rapid temperature fluctuations or severe thermal cycling. Additionally, monolithic refractories often exhibit better overall performance in terms of strength, mechanical properties, and resistance to chemical attack. The absence of joints and seams eliminates potential weak points, resulting in a more durable and reliable lining. Moreover, the homogeneous structure provides better resistance to corrosive agents, ensuring prolonged service life in harsh environments. Lastly, monolithic refractories offer advantages in terms of installation and maintenance. Their monolithic nature simplifies the installation process, reducing labor and time requirements. Additionally, repairs and maintenance can be carried out more easily and cost-effectively compared to traditional refractory bricks, which may require the replacement of entire sections or bricks. In summary, monolithic refractories differ from traditional refractory bricks in structure, flexibility, thermal shock resistance, performance, and installation characteristics. These differences make monolithic refractories a preferred choice in many high-temperature applications, offering improved efficiency, durability, and ease of use.
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Refractory Brick purging plug for BOF and EAF
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 set
- Supply Capability:
- 50000 set/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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