Monolithic Refractories Ceramic Lined Ceramic Ball Valve for Iron and Steel Industry
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 pc
- Supply Capability:
- 3000 pc/month
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Application:
Applied in any media, expect HF (Hydrofluoric Acid) or glass solution, with max. temperature up to 500°C or max pressure 5.0 Mpa, such as high corrosion, high attrition and middle pressure.
Structural: 3-part flange type float ball valve Flange standards follow DIN/ANSI/API/JIS
l Excellent wear-proof property of ceramic enables this valve have high reliability and prolonged lifespan which is 2-4times as much as Titannium Alloy and Monel Metal valve.
l Elastic O ring fit between metal part and ceramic part makes the whole part high sealing capacity, unables the two parts blind, and avoid the ball broken.
l Valve steams are selected among 316/316L stainless steel, HC alloy, Monel Alloy, structural ceramic.
l Completely symmetric design ensures dual leak-proof and two-direction usage to prolong its lifespan to twice.
All parts that connect the medium are made of structural ceramics with extremely high chemical stability and hardness (HRC 90), which is only inferior to diamond. So the valve features exceedingly high wear-proof capability, corrosion resisting, enduring capability, good heat insulation, small thermal expansion.
The valve is unique in granule medium of high hardness, or erosive soft granule and is the only choice for such medium. They are wisely used in FDG System, Slag system and LNCFS in power plant, saline water and distilling processes in alkali works, paper pulp system in paper mill, and so on.
The ball is processed by advanced polishing equipment and technology that can ensure high circularity, good surface quality,.
The self-lubricating capability of ZrO2, ensure the good sealing performance between the ball and its seat. It is thoroughly free from the defects of easy leakage, big torque, non-resistance sealing surface comparing with metal sealing valve.
ZrO2 Composition Chart of MZ Ceramic Ball Valve
NO. | Physical Property | Parameter |
1 | Crystal | >85% cubic, the rest monoclinic |
2 | Lg. Loss | 0.8%-1.0% |
3 | Average | 0.4-0.7um |
4 | Apparent Density | >0.4g/cc |
5 | ZrO2 Purity | >99.95% |
6 | Tapped Density | >0.8g/cc |
- Q: How are monolithic refractories repaired or replaced in iron and steel facilities?
- Monolithic refractories in iron and steel facilities are repaired or replaced through a process known as hot repair or hot gunning. This involves using specialized equipment to heat the damaged refractory material and remove it. The area is then prepared for new refractory installation, which is done by either shotcreting or gunning the new material onto the surface. This method allows for quick repairs and replacements, minimizing downtime and ensuring the efficiency and safety of the facility.
- Q: What are the specific requirements of monolithic refractories for blast furnace applications?
- To withstand the harsh conditions and high temperatures within a blast furnace, monolithic refractories used in these applications have specific requirements. These requirements encompass thermal stability, high strength, chemical resistance, erosion and abrasion resistance, low porosity, dense structure, and easy installation. Firstly, monolithic refractories must possess excellent thermal stability to endure the extreme temperatures encountered in blast furnaces. They should be able to resist thermal shock and maintain their physical and chemical properties even at high temperatures. Secondly, blast furnace conditions subject refractory linings to significant pressure and mechanical stress. As a result, monolithic refractories need to possess high strength and resistance to mechanical wear in order to withstand the weight of the burden and the movement of materials inside the furnace. Furthermore, blast furnace environments are highly corrosive due to the presence of molten metals, slag, and gases. Therefore, monolithic refractories should exhibit exceptional chemical resistance to prevent chemical reactions with these substances, which could lead to refractory degradation. Additionally, the materials being processed in a blast furnace can cause erosion and abrasion, resulting in wear of the refractory lining. Monolithic refractories used in blast furnaces should be able to withstand these erosive and abrasive forces, ensuring a longer service life. Moreover, blast furnace refractories should have low porosity to minimize the penetration of molten materials and gases. This is crucial as their penetration can cause refractory spalling and damage. Additionally, low porosity helps maintain the refractory lining's thermal stability and overall performance. Furthermore, the refractory lining in a blast furnace should have a dense structure to prevent the penetration of molten slag and metal, which could lead to refractory failure. A dense structure also aids in the refractory's heat insulation properties. Lastly, blast furnace refractories need to be easily installed and repaired due to frequent maintenance and repair requirements. Monolithic refractories offer the advantage of easy installation as they can be cast, gunned, or sprayed onto the refractory surface. This allows for quick repairs and reduced downtime. Overall, meeting these specific requirements ensures the durability and efficiency of the refractory lining, ultimately leading to improved blast furnace performance.
- Q: How can the lifespan of monolithic refractories be extended?
- The lifespan of monolithic refractories can be extended through proper installation techniques, regular maintenance, and careful handling.
- Q: How do monolithic refractories perform in reheating furnace roof applications?
- Monolithic refractories prove highly effective when used on the roofs of reheating furnaces. These refractories are renowned for their outstanding ability to withstand extreme temperature conditions, making them an essential component in furnace operations. Their resistance to thermal shock ensures that they do not crack or spall, guaranteeing the long-lasting durability of the furnace roof. Moreover, monolithic refractories offer exceptional insulation properties, thereby helping to maintain the desired temperature inside the furnace. With their low thermal conductivity, they prevent heat loss and reduce energy consumption. This not only enhances the energy efficiency of the furnace but also leads to cost savings for operators. Furthermore, monolithic refractories provide excellent resistance against chemical attacks from gases and molten metals found within the furnace environment. Designed to withstand corrosive atmospheres, they effectively prevent the penetration of harmful substances, thereby extending the lifespan of the roof refractory. Additionally, monolithic refractories offer easy installation and repair options. Their ability to be cast or gunned in place allows for a seamless and precise application to the roof structure. This feature also facilitates quick and efficient repairs or maintenance, minimizing downtime and production losses. In summary, monolithic refractories are a reliable and efficient choice for reheating furnace roof applications. Their outstanding resistance to thermal shock, insulation properties, chemical resistance, and ease of installation make them the ideal solution for maintaining the structural integrity and performance of the furnace roof.
- Q: What are the specific requirements of monolithic refractories for ladle purging applications?
- Monolithic refractories used for ladle purging applications need to have specific requirements such as high thermal shock resistance, excellent erosion resistance, and good insulating properties. They should also have low porosity to prevent excessive penetration of slag or metal, high strength to withstand the mechanical stresses during purging, and good chemical stability to resist the corrosive environment of the ladle. Additionally, they should have good workability for ease of installation and repair.
- Q: How are monolithic refractories different from traditional refractory bricks?
- Monolithic refractories are different from traditional refractory bricks because they are not pre-fabricated into brick shapes. Instead, they are supplied as a ready-mix or ready-to-use material that can be directly applied on-site. This eliminates the need for complex brick-laying processes and allows for a more flexible and efficient installation. Monolithic refractories also have superior thermal shock resistance and can withstand higher temperatures, making them ideal for demanding industrial applications.
- Q: What are the main challenges in designing the lining system with monolithic refractories?
- One of the main challenges in designing the lining system with monolithic refractories is achieving proper installation. Monolithic refractories are typically installed by casting, gunning, or shotcreting, which requires skilled labor and precise application techniques. Any errors or inconsistencies during installation can compromise the performance and longevity of the lining system. Another challenge is ensuring adequate bonding between the monolithic refractories and the existing structure. Proper adhesion is crucial to prevent refractory material from delaminating or separating from the underlying surface. Factors such as surface preparation, temperature differentials, and mechanical stress can affect the bond strength, requiring careful consideration during the design phase. The compatibility of monolithic refractories with various operating conditions is another challenge. Refractory materials are exposed to extreme temperatures, chemical reactions, and thermal cycling, which can lead to degradation and failure. Designing a lining system that can withstand these conditions requires a thorough understanding of the refractory properties and the specific requirements of the application. Furthermore, selecting the right monolithic refractory material for a given lining system is a significant challenge. There are various types of monolithic refractories available, each with its own strengths and weaknesses. Factors such as temperature range, chemical composition, thermal conductivity, abrasion resistance, and thermal shock resistance need to be considered when choosing the most suitable material for the application. Lastly, maintaining the integrity of the monolithic refractory lining system over its lifetime is a challenge. Regular inspections, repairs, and maintenance are necessary to address any issues such as cracks, erosion, or spalling. Developing a comprehensive maintenance plan and ensuring access to skilled personnel for repairs are essential aspects of designing a successful lining system with monolithic refractories.
- Q: How do monolithic refractories provide thermal insulation in the iron and steel industry?
- Monolithic refractories play a crucial role in providing thermal insulation in the iron and steel industry. These refractories are commonly used to line the furnaces and other high-temperature equipment used in the production processes. One way monolithic refractories provide thermal insulation is by their ability to withstand high temperatures without degrading or melting. They are designed to have high heat resistance, which allows them to be used in environments where temperatures can reach several thousand degrees Celsius. By withstanding these extreme temperatures, the refractories prevent the transfer of heat to the surrounding structure, thus providing insulation. Another way monolithic refractories provide thermal insulation is through their low thermal conductivity. These materials have a low thermal conductivity, meaning they are not efficient in conducting heat. Instead, they trap the heat within their structure and minimize its transfer to the surrounding equipment or environment. This characteristic helps to maintain the temperature inside the furnaces and other high-temperature equipment, allowing for efficient and controlled metal production. Furthermore, monolithic refractories can be applied as a thick lining layer, which creates an additional barrier between the high-temperature environment and the surrounding equipment. The thickness of the refractory lining helps to minimize heat transfer and acts as a buffer, reducing the impact of high temperatures on the structural integrity of the equipment. In addition to providing thermal insulation, monolithic refractories also offer excellent resistance to chemical attack and mechanical wear, which are common challenges in the iron and steel industry. This resistance ensures the longevity of the refractory lining, allowing for consistent and reliable insulation over time. Overall, monolithic refractories provide thermal insulation in the iron and steel industry through their high-temperature resistance, low thermal conductivity, thick lining layer, and resistance to chemical attack and mechanical wear. These properties contribute to maintaining the desired temperature inside the equipment and protecting the surrounding structure from the intense heat generated during metal production processes.
- Q: What are the specific requirements of monolithic refractories for soaking pit applications?
- Monolithic refractories used in soaking pit applications need to possess certain specific requirements. They should be able to withstand high temperatures, typically above 1500°C, without losing their structural integrity. They should also exhibit excellent thermal shock resistance to withstand rapid temperature fluctuations during the heating and cooling cycles. Additionally, they must have good resistance to chemical erosion from molten metals and slag present in the soaking pit. Other desirable properties include low porosity, high density, and good mechanical strength to ensure long-term durability and resistance to wear and tear.
- Q: How do monolithic refractories contribute to reducing downtime in iron and steel plants?
- The use of monolithic refractories plays a vital role in minimizing downtime in iron and steel plants. They have several key advantages over traditional brick refractories. To begin with, monolithic refractories are highly adaptable and can be easily shaped and installed. This allows for faster repairs and replacements. In contrast to brick refractories, which require time-consuming and labor-intensive processes like bricklaying and mortar application, monolithic materials can be directly applied in a castable or gunning form. This significantly reduces the time needed for repairs. Furthermore, monolithic refractories offer better thermal insulation and resistance to thermal shocks, which are common in iron and steel plants. This improved thermal performance helps to maintain stable operating temperatures and prevents sudden temperature fluctuations that can lead to refractory failure and subsequent downtime. By minimizing these thermal shocks, monolithic refractories increase the overall lifespan of the refractory lining, reducing the need for frequent repairs. Moreover, monolithic refractories provide superior chemical resistance compared to traditional brick refractories. Iron and steel plants often face aggressive chemical environments due to the presence of molten metal, slag, and other corrosive substances. Monolithic refractories are specifically designed to withstand these harsh conditions, preventing chemical attacks and erosion of the refractory lining. As a result, the occurrence of unscheduled shutdowns due to refractory degradation is significantly reduced. Lastly, monolithic refractories offer better dimensional stability, minimizing the risk of cracks and spalling caused by thermal cycling and mechanical stress. This increased resistance to wear and tear ensures that the refractory lining remains intact for a longer period, reducing the frequency of maintenance and enhancing the overall operational efficiency of the iron and steel plant. In conclusion, monolithic refractories contribute to downtime reduction in iron and steel plants by providing faster installation, improved thermal insulation, superior chemical resistance, and enhanced dimensional stability. Their versatility and performance advantages make them a reliable choice for maintaining an efficient and dependable refractory lining, ultimately reducing the frequency and duration of plant shutdowns.
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Monolithic Refractories Ceramic Lined Ceramic Ball Valve for Iron and Steel Industry
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 pc
- Supply Capability:
- 3000 pc/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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