Refractory Brick purging plug for Ladles
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 set
- Supply Capability:
- 50000 set/month
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High quality steel ladle purging plug for steel making
Company profile
We have many years manufacturing experience in producing all types of electric furnace refractories, ladle refractories, tundish refractories, metallurgy furnace burden refractory insulating products, industrial furnace refractories, etc,
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: How do monolithic refractories protect lining in ladles and tundishes?
- Monolithic refractories protect lining in ladles and tundishes by forming a strong and durable barrier against the harsh conditions of high temperatures, thermal shock, and chemical corrosion. They are designed to withstand the extreme heat and mechanical stresses that occur during metal pouring and handling, ensuring the integrity and longevity of the lining. Additionally, monolithic refractories provide excellent insulation properties, reducing heat loss and conserving energy in the ladles and tundishes.
- 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: What are the considerations for selecting monolithic refractories for ladles and tundishes?
- When selecting monolithic refractories for ladles and tundishes, there are several important considerations to keep in mind. 1. Temperature resistance: Ladles and tundishes are exposed to extremely high temperatures in metal casting processes. It is crucial to choose monolithic refractories that can withstand and maintain their strength and integrity at these elevated temperatures. 2. Thermal shock resistance: Ladles and tundishes are subjected to rapid temperature changes, especially during the pouring and cooling processes. Monolithic refractories with good thermal shock resistance can prevent cracking and spalling, ensuring the longevity and performance of the ladles and tundishes. 3. Erosion and corrosion resistance: Molten metal, slag, and other corrosive substances can cause erosion and chemical attack on refractory linings. Selecting monolithic refractories with excellent erosion and corrosion resistance can prolong the service life of ladles and tundishes, reducing maintenance and downtime. 4. Mechanical strength: Ladles and tundishes are frequently handled, transported, and subjected to mechanical stresses. Monolithic refractories with adequate mechanical strength can withstand these forces without cracking or breaking, ensuring the structural integrity of ladles and tundishes. 5. Application method: The method of applying monolithic refractories is another consideration. Depending on the size and shape of the ladles and tundishes, as well as the available equipment and expertise, different application methods such as gunning, casting, ramming, or spraying may be used. The selected monolithic refractories should be compatible with the chosen application method. 6. Thermal conductivity: The thermal conductivity of monolithic refractories can affect heat transfer in ladles and tundishes. Low thermal conductivity refractories can help minimize heat loss and improve energy efficiency. 7. Cost-effectiveness: While performance and durability are essential, it is also important to consider the cost-effectiveness of the selected monolithic refractories. This includes factors such as the initial cost of the refractories, installation and maintenance costs, as well as the expected service life. Balancing performance with cost can help optimize the overall investment in ladles and tundishes. Overall, the considerations for selecting monolithic refractories for ladles and tundishes involve a combination of temperature resistance, thermal shock resistance, erosion and corrosion resistance, mechanical strength, application method compatibility, thermal conductivity, and cost-effectiveness. By carefully evaluating these factors, one can choose the most suitable monolithic refractories that meet the specific requirements of ladles and tundishes in metal casting processes.
- Q: How do monolithic refractories mitigate heat loss in iron and steel operations?
- Monolithic refractories possess unique properties and composition that make them highly effective in reducing heat loss in iron and steel operations. Unlike other refractories, monolithic ones are made from a single, continuous material, making them resistant to cracks and gaps that could potentially allow heat to escape. One major advantage of monolithic refractories lies in their exceptional thermal conductivity and insulation properties. With their low thermal conductivity, they are able to effectively limit the transfer of heat from hot areas to cooler surroundings. This insulation characteristic helps maintain high temperatures within iron and steel operations, resulting in reduced heat loss to the environment. Another contributing factor to heat loss mitigation is the ability of monolithic refractories to form a tight seal with the metal structures they are applied to. They adhere well to surfaces and fill in any gaps or irregularities, creating a solid barrier against heat loss. By minimizing the possibility of heat escaping, these refractories ensure that the energy generated within the operations is utilized effectively. Additionally, monolithic refractories exhibit high resistance to thermal shock. In the iron and steel industry, rapid temperature fluctuations are common, which can lead to material deterioration and cracks. However, monolithic refractories possess the ability to withstand these temperature changes without compromising their structural integrity. This guarantees the longevity and effectiveness of the refractories in mitigating heat loss. In summary, monolithic refractories play a vital role in reducing heat loss in iron and steel operations through their excellent insulation, ability to form a tight seal, and resistance to thermal shock. These properties enable them to maintain high temperatures, optimize energy utilization, and enhance overall process efficiency.
- Q: How do monolithic refractories resist chemical attack from molten metals and slags?
- Monolithic refractories resist chemical attack from molten metals and slags due to their chemical composition and structure. They are typically designed with high levels of resistance to corrosion and erosion, making them suitable for harsh environments. Additionally, they have low porosity, which reduces the penetration of molten metals and slags into the refractory material. The presence of certain additives and bonding agents further enhances their chemical resistance, preventing reactions between the refractory and the molten substances. Overall, monolithic refractories offer a strong barrier against chemical attack, ensuring their durability and longevity in such demanding conditions.
- Q: How do monolithic refractories withstand high temperatures in iron and steel processing?
- Monolithic refractories are able to withstand high temperatures in iron and steel processing due to their unique composition and design. These refractories are made from a single, solid material as opposed to being composed of multiple layers. This monolithic structure allows for superior thermal conductivity and resistance to thermal shock. One key aspect that enables monolithic refractories to withstand high temperatures is their high melting point. These refractories are typically made from materials such as alumina, magnesia, silica, or zirconia, which have melting points well above the temperatures encountered in iron and steel processing. This ensures that the refractories do not deteriorate or melt when exposed to these extreme temperatures. Furthermore, monolithic refractories have excellent thermal insulation properties. They possess low thermal conductivity, which means they can effectively prevent heat transfer from the hot molten metal or gases to the surrounding environment. This insulation property helps to maintain high temperatures within the processing units, ensuring efficient and effective iron and steel production. Another important factor in the ability of monolithic refractories to withstand high temperatures is their resistance to thermal shock. During iron and steel processing, rapid temperature changes are common, which can cause traditional refractories to crack or spall. Monolithic refractories, however, have a more homogeneous structure and greater flexibility, allowing them to withstand these rapid temperature fluctuations without significant damage. In addition to their composition, the installation method of monolithic refractories also contributes to their ability to withstand high temperatures. These refractories are typically installed using a technique called gunning or shotcreting, which involves spraying a mixture of refractory material and water onto the surface to form a dense and solid lining. This installation method ensures a tight bond between the refractory and the substrate, enhancing the overall strength and durability of the lining. Overall, monolithic refractories are able to withstand high temperatures in iron and steel processing due to their high melting point, excellent thermal insulation properties, resistance to thermal shock, and proper installation techniques. These refractories play a crucial role in maintaining the integrity and efficiency of the processing units, allowing for the production of high-quality iron and steel products.
- Q: What are the limitations of monolithic refractories in high-temperature applications?
- Monolithic refractories are known for their versatility and ease of installation, making them popular in a variety of high-temperature applications. However, they do have certain limitations that need to be considered. Firstly, monolithic refractories have a limited thermal shock resistance. Rapid temperature changes, such as during startup or shutdown procedures, can cause thermal stress, leading to cracking or spalling. This can be a significant concern in applications where the refractory is subjected to frequent temperature fluctuations. Secondly, monolithic refractories have relatively lower mechanical strength compared to traditional brick or block refractories. This can result in reduced resistance to mechanical stress, such as abrasion or impact, particularly in high-temperature environments. Therefore, they may not be suitable for applications with high mechanical loading or abrasive conditions. Another limitation of monolithic refractories is their susceptibility to chemical attack. Certain aggressive chemical environments can cause chemical reactions with the refractory material, leading to deterioration or corrosion. This can be a concern in applications involving acidic or alkaline substances, where special refractory materials may be required. Furthermore, monolithic refractories can have a higher susceptibility to spalling or erosion caused by thermal cycling. The repeated expansion and contraction of the refractory material due to temperature changes can lead to the formation of cracks or gaps, making them more prone to erosion from gases or liquids. This limitation should be carefully considered in applications where long-term durability is essential. Lastly, monolithic refractories can be challenging to repair or replace compared to brick or block refractories. Once installed, it can be difficult to remove and replace a monolithic lining, especially in complex shapes or confined spaces. This limitation can result in longer downtime or increased costs for maintenance or repairs. In summary, while monolithic refractories offer several advantages in high-temperature applications, they also have limitations in terms of thermal shock resistance, mechanical strength, chemical resistance, erosion, and repairability. These limitations should be carefully evaluated to ensure the suitability of monolithic refractories for specific application requirements.
- Q: What are the recommended curing and drying procedures for monolithic refractories?
- The curing and drying procedures for monolithic refractories vary depending on the specific type and composition of the material. However, there are some general guidelines that can be followed. Curing involves allowing the refractory material to set and harden. This is achieved by subjecting the material to controlled temperature and humidity conditions. The purpose of curing is to develop the desired physical and chemical properties of the refractory, such as strength and resistance to thermal shock. Drying, on the other hand, involves removing moisture from the refractory material. This is important because moisture can cause cracking or spalling when exposed to high temperatures. Drying usually takes place after the curing process. The curing and drying procedures for monolithic refractories typically involve the following steps: 1. Preheating: Before applying the refractory material, it is necessary to preheat the surface where it will be applied. This prevents rapid moisture evaporation and ensures good adhesion of the refractory. 2. Mixing and application: The refractory material should be mixed according to the manufacturer's instructions and applied to the desired surface using appropriate techniques such as gunning, casting, or ramming. 3. Initial curing: After application, the refractory should be cured at a controlled temperature and humidity for a specific duration. This allows the material to set and strengthen. The curing temperature and duration may vary depending on the specific refractory material, but it is advisable to start with a lower temperature and gradually increase it. 4. Drying: Once the initial curing is complete, the refractory should be dried to eliminate any remaining moisture. This is done by gradually increasing the temperature in a controlled manner. The drying temperature and duration may vary depending on the specific refractory material, but it is important to avoid rapid temperature changes to prevent thermal stress and cracking. 5. Final curing: After drying, the refractory should be allowed to cool gradually to room temperature. This final curing step further enhances the strength and stability of the refractory. It is crucial to follow the manufacturer's guidelines and recommendations for the specific refractory material being used, as different materials may have different curing and drying requirements. Additionally, factors such as the size and shape of the refractory installation, as well as the surrounding environment, may also affect the curing and drying procedures. It is always advisable to consult with a refractory specialist or manufacturer to ensure the proper curing and drying procedures are followed for optimal performance and longevity of the monolithic refractories.
- Q: How do monolithic refractories perform in electric arc furnace roof applications?
- Monolithic refractories are highly effective in electric arc furnace (EAF) roof applications due to their unique properties and characteristics. These refractories, which are composed of a single, solid material, offer several advantages in this specific application. Firstly, monolithic refractories provide excellent thermal insulation, which is crucial in EAF roof applications. The intense heat generated in the furnace can cause structural damage to traditional brick refractories, but monolithic refractories have a higher resistance to thermal shock, reducing the risk of cracking and spalling. This allows them to maintain their integrity and insulation properties even in extreme temperature conditions. Moreover, monolithic refractories have high strength and abrasion resistance, ensuring their durability and longevity in EAF roof applications. The roof of an electric arc furnace is exposed to harsh conditions, including the impact of scrap materials and the erosive effect of molten metal and slag. Monolithic refractories are designed to withstand these challenges, offering superior resistance to mechanical wear and erosion. Another advantage of monolithic refractories is their ease of installation. Unlike traditional brick refractories, which require time-consuming and complex installation processes, monolithic refractories can be applied quickly and efficiently. They can be cast, gunned, or sprayed onto the roof surface, conforming to any shape or contour, thus reducing downtime during installation or repair. Furthermore, monolithic refractories provide increased energy efficiency in EAF roof applications. Their superior insulation properties minimize heat loss, resulting in reduced energy consumption and cost savings. This is particularly important for electric arc furnaces, as they rely on high temperatures to melt and process metals, and any heat loss can significantly impact the efficiency and productivity of the furnace. In conclusion, monolithic refractories are highly suitable for electric arc furnace roof applications due to their exceptional thermal insulation, strength, abrasion resistance, ease of installation, and energy efficiency. These refractories offer significant advantages over traditional brick refractories, ensuring optimal performance and prolonged service life in the demanding environment of an electric arc furnace.
- Q: How do monolithic refractories withstand thermal shock?
- Monolithic refractories are able to withstand thermal shock due to their unique properties and composition. Thermal shock occurs when there is a rapid change in temperature, causing stress and potential damage to the refractory material. However, monolithic refractories are designed to have high thermal shock resistance, and this is achieved through several mechanisms. Firstly, the composition of monolithic refractories includes materials with low thermal expansion coefficients. This means that they have a minimal change in size or volume when exposed to different temperatures. This property allows the refractory material to withstand thermal shock by minimizing the stress caused by temperature fluctuations. Secondly, monolithic refractories have excellent thermal conductivity. This property allows them to efficiently transfer heat away from the hot areas, preventing localized overheating and reducing the risk of thermal shock. The rapid dissipation of heat helps to maintain a more uniform temperature distribution within the refractory material, thus reducing the chances of cracking or spalling. Additionally, the binding agents used in monolithic refractories play a crucial role in their thermal shock resistance. These binders provide strength to the refractory material and help to maintain its integrity during thermal cycling. The binders also contribute to the refractory's resistance to thermal shock by reducing the permeability of the material, preventing the penetration of hot gases or liquids that could cause damage. Moreover, the installation technique of monolithic refractories is an important factor in their ability to withstand thermal shock. Monolithic refractories are typically applied as a single, continuous layer, eliminating the joints and seams that can be weak points in other refractory systems. This seamless installation method ensures better thermal shock resistance as there are no weak points for cracks to propagate. In summary, monolithic refractories withstand thermal shock through a combination of factors including their low thermal expansion coefficients, high thermal conductivity, suitable binding agents, and seamless installation techniques. These properties and design considerations allow monolithic refractories to effectively handle rapid changes in temperature and maintain their structural integrity, making them ideal for applications that involve thermal cycling and extreme temperature variations.
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Refractory Brick purging plug for Ladles
- 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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