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 common failure modes of monolithic refractories in iron and steel applications?
- The common failure modes of monolithic refractories in iron and steel applications include thermal spalling, erosion, chemical attack, and mechanical damage. Thermal spalling occurs when the refractories cannot withstand the extreme temperature changes, leading to cracking and flaking. Erosion occurs due to the abrasive nature of molten metal or slag, causing the refractory material to wear away. Chemical attack happens when the refractory reacts with the corrosive components of the molten metal or slag, leading to degradation. Mechanical damage can occur from mechanical stress, such as thermal expansion or contraction, causing cracks or fractures in the refractory material.
- Q: How do monolithic refractories contribute to energy efficiency in iron and steel production?
- Monolithic refractories play a crucial role in enhancing energy efficiency in iron and steel production processes. These refractories are unshaped materials that are used to line the various components of furnaces, kilns, and other high-temperature equipment involved in the production of iron and steel. One way monolithic refractories contribute to energy efficiency is by providing excellent insulation. These materials have low thermal conductivity, which means they effectively reduce heat transfer from the furnace or kiln to the surrounding environment. By minimizing heat loss, monolithic refractories help maintain high temperatures within the production units, which in turn reduces the energy required to sustain the desired operating conditions. Furthermore, monolithic refractories offer superior resistance to thermal shock and wear, ensuring the longevity of the lining materials. This durability reduces the need for frequent repairs and replacements, leading to less downtime and increased operational efficiency. As a result, energy is conserved since the production units can continuously operate at optimal temperatures without interruptions. In addition, monolithic refractories have excellent resistance to chemical reactions, corrosion, and erosion caused by molten metals and slag. This resistance reduces the formation of cracks and defects in the lining, which can compromise the insulation and increase heat loss. By maintaining a robust and intact lining, monolithic refractories contribute to energy efficiency by minimizing heat escape and ensuring the efficient utilization of energy for the iron and steel production processes. Moreover, the use of monolithic refractories allows for design flexibility in the construction of furnaces and kilns. Their ability to be shaped and applied in various configurations enables the creation of optimized lining structures that enhance heat transfer and combustion efficiency. This flexibility empowers engineers and operators to design and modify the production units to maximize energy efficiency and minimize energy wastage. Overall, monolithic refractories contribute significantly to energy efficiency in iron and steel production by providing excellent insulation, durability, resistance to thermal and chemical degradation, and design flexibility. By reducing heat loss, minimizing repairs and replacements, and optimizing heat transfer, these refractories play a vital role in conserving energy and improving the overall sustainability of the iron and steel industry.
- Q: How are monolithic refractories different from traditional refractories?
- Monolithic refractories differ from traditional refractories in terms of their composition, installation method, and performance characteristics. To begin with, monolithic refractories consist of only one material, as their name suggests, while traditional refractories are typically comprised of multiple materials. This singular composition of monolithic refractories allows for greater control over their properties and performance. Moreover, the installation process for monolithic refractories differs from that of traditional refractories. Traditional refractories are typically installed in the form of bricks or precast shapes, which are assembled together to create the desired lining. In contrast, monolithic refractories are provided in a ready-to-use form, such as a dry mix or suspension, which is then poured, sprayed, or gunned into place. This facilitates a faster and more efficient installation of monolithic refractories. Lastly, monolithic refractories offer superior performance characteristics compared to traditional refractories. They possess improved thermal shock resistance, higher hot strength, and enhanced resistance to chemical attacks. Furthermore, they can be more easily repaired or patched compared to traditional refractories, which often necessitate the replacement of entire bricks or shapes. In conclusion, the key distinctions between monolithic refractories and traditional refractories lie in their composition, installation method, and performance characteristics. Monolithic refractories provide better control over properties, simpler installation, and superior performance, making them the preferred choice in numerous industrial applications.
- Q: How do monolithic refractories contribute to energy efficiency in the iron and steel industry?
- Monolithic refractories play a crucial role in improving energy efficiency in the iron and steel industry. These refractories are made from a single material and can be easily molded, thereby providing a seamless lining in various high-temperature applications, such as furnaces and kilns. By having a monolithic lining, heat loss is significantly minimized as there are no joints or gaps for heat to escape. This leads to reduced energy consumption and improved overall energy efficiency in the industry. Additionally, monolithic refractories offer better thermal conductivity and insulation properties, enabling better heat transfer and retention within the equipment, further optimizing energy usage.
- Q: How do monolithic refractories withstand mechanical stress in the iron and steel industry?
- Monolithic refractories are designed to endure mechanical stress in the iron and steel industry due to their distinctive composition and properties. Unlike traditional brick-like refractories, which consist of multiple pieces, these refractories have a single, uniform structure. This monolithic structure offers several advantages in terms of mechanical stress resistance. To begin with, monolithic refractories possess greater strength and density compared to traditional refractories. This enables them to withstand the mechanical forces exerted during various processes in the iron and steel industry, such as the movement of molten metal, the impact of scrap materials, or the pressure from gases and liquids. Their superior strength and density help prevent cracking, deformation, or failure under these stressful conditions. Moreover, monolithic refractories provide excellent resistance to thermal shock, which is crucial in the iron and steel industry. The rapid heating and cooling cycles experienced in processes like steelmaking or iron casting can subject refractories to thermal stress. However, the monolithic structure of these refractories allows for better thermal conductivity and expansion, reducing the risk of thermal shock damage. This ability to withstand thermal stress contributes to their overall resistance to mechanical stress. Furthermore, monolithic refractories can be customized and applied on-site, resulting in a seamless lining that eliminates joints or weak spots. This seamless application ensures a more uniform distribution of stress and prevents the formation of cracks or gaps that could weaken the refractory lining. By eliminating these vulnerabilities, monolithic refractories enhance their ability to resist mechanical stress in the demanding conditions of the iron and steel industry. In conclusion, monolithic refractories endure mechanical stress in the iron and steel industry due to their high strength and density, superior resistance to thermal shock, and seamless application. These properties enable them to withstand the intense mechanical forces encountered during various processes, ensuring the durability and efficiency of refractory linings in this demanding industry.
- Q: What are the key properties of shotcrete mixes used for monolithic refractory applications?
- The key properties of shotcrete mixes used for monolithic refractory applications are: 1. High Strength: Shotcrete mixes used for monolithic refractory applications should have high compressive strength to withstand the high temperatures and stresses experienced in refractory environments. This ensures that the shotcrete lining remains intact and provides effective insulation and protection. 2. Low Porosity: Shotcrete mixes should have low porosity to minimize the infiltration of gases and liquids into the refractory lining. This helps to prevent corrosion and degradation of the lining, and ensures its long-term durability. 3. Thermal Stability: Shotcrete mixes should exhibit excellent thermal stability to withstand the extreme heat conditions in refractory applications. They should have low thermal conductivity to effectively insulate the structure and prevent heat transfer. This helps to maintain the integrity of the refractory lining and optimize its performance. 4. Abrasion Resistance: Shotcrete mixes used for monolithic refractory applications should have high abrasion resistance to withstand the mechanical wear and tear caused by the movement of materials and particles. This property ensures that the refractory lining remains intact and provides effective protection against erosion. 5. Chemical Resistance: Shotcrete mixes should be resistant to chemical attack from molten metals, slag, and other corrosive substances present in refractory applications. This helps to maintain the integrity of the lining and prolong its service life. 6. Workability: Shotcrete mixes should have good workability to facilitate easy placement and application. This allows for efficient and precise installation of the refractory lining, ensuring the desired thickness and coverage. Overall, shotcrete mixes used for monolithic refractory applications should possess a combination of high strength, low porosity, thermal stability, abrasion resistance, chemical resistance, and workability to ensure optimal performance and durability in refractory environments.
- Q: What are the specific requirements of monolithic refractories for steel ladle purging applications?
- Monolithic refractories used in steel ladle purging applications have specific requirements to ensure optimal performance and durability. Firstly, these refractories need to have high thermal stability and resistance to thermal shock due to the extreme temperatures involved in the steelmaking process. This is important to prevent any cracking or spalling of the refractory lining. In addition, monolithic refractories for ladle purging applications should have excellent corrosion resistance against molten steel and slag. They need to withstand the aggressive chemical environment without any significant deterioration, as this could lead to contamination of the steel and affect its quality. Another important requirement is good erosion resistance. The refractories should be able to withstand the high velocity of the purging process, where argon or other gases are injected into the ladle to remove impurities. This erosion resistance ensures that the refractory lining remains intact and does not wear away during operation. Furthermore, monolithic refractories for ladle purging applications should have low porosity and high density. This prevents the penetration of molten steel and slag into the refractory lining, reducing the risk of thermal spalling and corrosion. Lastly, these refractories should have good thermal conductivity to efficiently transfer heat from the steel to the refractory lining, allowing for better temperature control and energy efficiency during the purging process. Overall, the specific requirements of monolithic refractories for steel ladle purging applications include high thermal stability, corrosion resistance, erosion resistance, low porosity, high density, and good thermal conductivity. Meeting these requirements ensures the refractories can withstand the harsh conditions of the steelmaking process, maintain their integrity, and contribute to the production of high-quality steel.
- Q: How do monolithic refractories improve the thermal efficiency of iron and steel furnaces?
- Monolithic refractories improve the thermal efficiency of iron and steel furnaces by providing superior insulation and heat containment properties. These refractories are designed to withstand extreme temperatures and resist thermal shock, ensuring minimal heat loss from the furnace. Additionally, monolithic refractories have low thermal conductivity, allowing for better heat distribution and retention within the furnace. This enhanced thermal efficiency leads to reduced energy consumption and higher productivity in the iron and steel manufacturing process.
- Q: How do monolithic refractories prevent heat loss through radiation?
- Monolithic refractories prevent heat loss through radiation by forming a continuous and seamless layer that acts as a barrier to thermal radiation. This layer reflects and absorbs the radiant heat, preventing it from escaping and thus minimizing heat loss. Additionally, the high thermal conductivity of monolithic refractories allows them to efficiently conduct and distribute heat, further reducing the potential for radiation heat loss.
- Q: How do monolithic refractories contribute to energy efficiency in iron and steel manufacturing?
- Monolithic refractories contribute to energy efficiency in iron and steel manufacturing through their superior insulation properties and ability to withstand high temperatures. These refractories minimize heat loss, reducing the energy required for heating and maintaining the desired temperature in the manufacturing process. Additionally, their durability and resistance to thermal shock help to extend the lifespan of furnaces and other equipment, reducing the need for frequent repairs or replacements, further enhancing energy efficiency.
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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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