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 do monolithic refractories prevent thermal shock in the iron and steel industry?
- Monolithic refractories prevent thermal shock in the iron and steel industry by providing a continuous and seamless lining that can withstand extreme temperatures and sudden temperature changes. Their high thermal conductivity and low thermal expansion properties allow them to effectively distribute and absorb heat, reducing the likelihood of thermal stress and cracking. Additionally, their ability to form strong bonds with the furnace walls prevents the entry of hot gases and molten metal, further protecting against thermal shock.
- Q:What are the factors affecting the thermal expansion of monolithic refractories?
- There are several factors that influence the thermal expansion of monolithic refractories. 1. Chemical Composition: The chemical composition of the refractory material plays a significant role in its thermal expansion. Different chemical elements and compounds have different coefficients of thermal expansion. For example, materials containing high levels of silica tend to have lower coefficients of thermal expansion compared to materials with higher concentrations of alumina. 2. Particle Size: The particle size distribution of the refractory material can affect its thermal expansion. Smaller particle sizes tend to result in higher thermal expansion due to increased surface area and greater contact between particles. 3. Temperature: The temperature at which the monolithic refractory is exposed can greatly impact its thermal expansion. As the temperature increases, the kinetic energy of the particles increases, causing them to move more vigorously and expand. Different refractory materials have different temperature ranges at which they exhibit significant expansion. 4. Thermal History: The thermal history of the refractory material, including its heating and cooling cycles, can influence its thermal expansion behavior. Repeated heating and cooling cycles can induce microstructural changes in the material, affecting its thermal expansion properties. 5. Porosity: The porosity of the monolithic refractory can affect its thermal expansion. Higher porosity generally leads to higher thermal expansion due to the presence of voids and gaps within the material. 6. Binder Content: Monolithic refractories often contain binders that hold the particles together. The type and amount of binder used can impact the thermal expansion of the refractory. Different binders have different coefficients of thermal expansion, which can influence the overall expansion behavior of the material. 7. Thermal Shock: Rapid temperature changes, such as during quenching or exposure to alternating heating and cooling, can cause thermal shock in the refractory material. This can lead to cracks, spalling, and changes in the thermal expansion behavior. Understanding these factors is crucial in selecting the appropriate monolithic refractory material for specific applications, as the thermal expansion characteristics can directly impact the performance and longevity of the refractory in high-temperature environments.
- Q:How do monolithic refractories perform in high-temperature environments?
- Monolithic refractories are highly effective in high-temperature environments due to their unique characteristics. These refractories are made from a single, continuous composition, as opposed to being composed of multiple bricks or tiles. This monolithic structure provides several advantages when it comes to performance in high-temperature conditions. Firstly, monolithic refractories have excellent thermal shock resistance. This means that they can withstand rapid temperature changes without cracking or spalling. High temperatures can cause significant stress on materials, but the monolithic structure allows for better expansion and contraction, reducing the risk of damage. Additionally, monolithic refractories have high resistance to chemical attack. In high-temperature environments, there are often aggressive chemical agents present that can corrode and erode traditional refractory materials. However, the monolithic composition is usually designed to be chemically inert, providing a protective barrier against these corrosive elements. Moreover, monolithic refractories offer superior strength and durability at high temperatures. Their single composition ensures a dense and compact structure, making them less prone to cracking or breaking under extreme thermal conditions. This strength allows them to maintain their integrity and performance even in the most demanding environments. Furthermore, monolithic refractories can be easily installed and repaired. Unlike traditional refractories, which require precise brick or tile placement, monolithic materials can be poured or sprayed into place, conforming to any shape or size. This flexibility makes installation faster and more cost-effective, reducing downtime and maintenance costs. Overall, monolithic refractories excel in high-temperature environments due to their thermal shock resistance, chemical inertness, durability, and ease of installation. Their ability to withstand extreme heat and harsh conditions makes them a preferred choice for industries such as steel, cement, glass, and petrochemicals, where high temperatures are common.
- Q:How are monolithic refractories different from traditional refractories?
- Monolithic refractories differ from traditional refractories in their composition and installation process. Unlike traditional refractories, which are made from pre-formed bricks or shapes, monolithic refractories are produced as a single, homogeneous mass. This allows for easier and faster installation, as they can be poured or gunned into place. Monolithic refractories also exhibit better thermal shock resistance, higher strength, and improved resistance to chemical attacks, making them a preferred choice in many industrial applications.
- Q:How does the choice of monolithic refractory impact the overall cost of iron and steel production?
- The overall cost of iron and steel production can be greatly affected by the choice of monolithic refractory. Monolithic refractory, unlike traditional brick or tile refractories, refers to a type of refractory material that is installed continuously. One important factor that impacts the cost of iron and steel production is the lifespan of the refractory. Monolithic refractories generally have a longer lifespan compared to traditional brick or tile refractories. This means that they require less frequent maintenance and replacement, resulting in lower overall costs over time. Additionally, monolithic refractories have a higher resistance to thermal shock and mechanical stress, which further extends their lifespan and reduces the need for repairs and replacements. Another crucial consideration is the energy efficiency of the monolithic refractory. These refractories possess better insulation properties, leading to reduced heat loss during the iron and steel production process. This helps lower energy consumption and, consequently, the overall cost of production. The improved insulation also contributes to a more stable and controlled temperature profile within the furnace, resulting in better product quality and reduced scrap rates. Furthermore, monolithic refractories offer greater flexibility in terms of installation and repair. They can be easily applied to complex shapes and structures, allowing for more efficient use of refractory materials. This reduces waste and lowers material costs. The ease of installation also saves time and labor, further contributing to cost savings. Additionally, monolithic refractories are known for their superior performance in high-temperature environments. They exhibit excellent thermal conductivity and resistance to chemical attacks, ensuring optimal furnace operation and reducing the likelihood of downtime and production delays. This, in turn, minimizes the impact of unexpected maintenance, repairs, and shutdowns on the overall cost of iron and steel production. In conclusion, the choice of monolithic refractory has a significant impact on the overall cost of iron and steel production. Its longer lifespan, improved energy efficiency, ease of installation and repair, and superior performance in high-temperature environments all contribute to cost savings in various aspects of the production process. Thus, careful consideration of the type of monolithic refractory used can result in significant cost reductions and improved overall efficiency in iron and steel production.
- Q:How do monolithic refractories contribute to reducing emissions in iron and steel processes?
- The reduction of emissions in iron and steel processes is greatly aided by the use of monolithic refractories, which offer a more efficient and sustainable lining solution compared to traditional brick refractories. To begin with, monolithic refractories possess a homogeneous structure that allows for easier installation and repair. This characteristic reduces the amount of time needed for maintenance, ultimately leading to increased productivity and decreased emissions. In contrast, brick refractories require more labor-intensive and time-consuming procedures for installation and repair, resulting in longer shutdown periods and higher emissions. Additionally, monolithic refractories demonstrate superior thermal insulation properties. By minimizing heat loss from furnaces or kilns, they enhance energy efficiency and decrease the amount of fuel required to reach the desired temperature. This reduction in fuel consumption directly translates into lower emissions of greenhouse gases, such as carbon dioxide, which contributes to the overall environmental sustainability of iron and steel processes. Furthermore, monolithic refractories possess excellent resistance to both thermal and chemical wear, thereby enhancing the durability and lifespan of the lining. This increased durability reduces the frequency at which refractories need to be replaced, resulting in reduced waste generation and resource consumption. By extending the service life of the lining, monolithic refractories contribute to the reduction of the environmental impact associated with the production and disposal of refractory materials. Moreover, monolithic refractories can be formulated with specialized compositions and additives to improve their resistance to corrosion and erosion, which are common challenges in iron and steel processes. By minimizing the wear and tear on the refractory lining, they help maintain the integrity of furnaces and kilns, preventing the leakage of harmful gases and pollutants that would otherwise contribute to emissions. In conclusion, monolithic refractories aid in the reduction of 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 provide a sustainable solution for the industry, aligning with global efforts to combat climate change and promote environmental stewardship.
- Q:How do monolithic refractories contribute to energy efficiency in iron and steel production?
- Enhancing energy efficiency in iron and steel production processes is a crucial role played by monolithic refractories. These refractories, which are unshaped materials, are utilized to line the components of furnaces, kilns, and other high-temperature equipment involved in the production of iron and steel. One method by which monolithic refractories contribute to energy efficiency is through their excellent insulation properties. These materials possess low thermal conductivity, effectively reducing heat transfer from the furnace or kiln to the surrounding environment. By minimizing heat loss, monolithic refractories aid in maintaining high temperatures within the production units, ultimately reducing the energy required to sustain the desired operating conditions. Moreover, monolithic refractories offer exceptional resistance to thermal shock and wear, ensuring the longevity of the lining materials. This durability diminishes the need for frequent repairs and replacements, resulting in less downtime and increased operational efficiency. Consequently, energy is conserved as the production units can continuously operate at optimal temperatures without interruptions. Additionally, monolithic refractories exhibit excellent resistance to chemical reactions, corrosion, and erosion caused by molten metals and slag. This resistance decreases 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. Furthermore, the utilization 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. In conclusion, monolithic refractories significantly contribute to energy efficiency in iron and steel production through their 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:What are the main factors affecting the thermal conductivity of monolithic refractories?
- The main factors affecting the thermal conductivity of monolithic refractories are the composition of the refractory material, the density of the material, the porosity of the material, and the presence of any additives or impurities. The composition of the refractory material plays a significant role in determining its thermal conductivity. Different types of refractory materials, such as alumina-based, silica-based, or magnesia-based, have different thermal conductivities due to their varying chemical compositions. For example, materials with a higher alumina content generally have higher thermal conductivities compared to materials with a higher silica content. The density of the refractory material also affects its thermal conductivity. Generally, materials with higher densities have higher thermal conductivities because the closely packed particles allow for more efficient heat transfer. On the other hand, materials with lower densities have lower thermal conductivities as the heat transfer is hindered by the presence of air pockets or voids. The porosity of the refractory material is another important factor affecting its thermal conductivity. Porosity refers to the presence of small pores or spaces within the material. Higher porosity leads to lower thermal conductivity as the air or gas trapped within the pores acts as an insulator, reducing the ability of the material to conduct heat. Therefore, materials with lower porosity tend to have higher thermal conductivities. The presence of any additives or impurities in the refractory material can also affect its thermal conductivity. Certain additives or impurities, such as carbon or metallic oxides, can enhance or inhibit heat transfer in the material. For instance, the addition of carbon can increase thermal conductivity due to its high thermal conductivity, while the presence of metallic oxides may decrease thermal conductivity due to their lower thermal conductivities. In summary, the thermal conductivity of monolithic refractories is influenced by the composition, density, porosity, and the presence of any additives or impurities. Understanding and controlling these factors are crucial in designing and selecting refractory materials with optimal thermal conductivity for specific applications.
- Q:How do monolithic refractories withstand high temperatures and thermal cycling?
- Monolithic refractories, with their unique composition and structural characteristics, are designed to endure high temperatures and thermal cycling. To begin with, these refractories are composed of high-quality raw materials like alumina, silica, and magnesia. These materials possess exceptional thermal properties, including high melting points and low thermal conductivity. Consequently, they can maintain their strength and integrity even in extreme temperatures. Additionally, monolithic refractories are engineered to have a dense and compact microstructure. This dense structure prevents the infiltration of heat and gases, minimizing thermal shock and crack formation. Moreover, the compact microstructure enhances the refractory's thermal conductivity, allowing it to efficiently distribute and dissipate heat. Furthermore, special additives and bonding agents are often incorporated into monolithic refractories to enhance their resistance to thermal cycling. These additives improve the refractory's thermal expansion properties, enabling it to expand and contract without cracking or spalling during rapid temperature changes. Some bonding agents also provide flexibility to the refractory, allowing it to withstand thermal stresses without compromising its structural integrity. In addition to these inherent characteristics, proper installation techniques are crucial for the refractory's ability to withstand high temperatures and thermal cycling. Careful application and curing ensure uniformity and minimize the development of internal stresses. Adequate curing and heat treatment processes create a strong and durable bond between the refractory and the substrate, enhancing its resistance to thermal shock and cyclic thermal loading. In summary, the composition, microstructure, and installation techniques of monolithic refractories work together to enable them to withstand high temperatures and thermal cycling. These factors result in excellent thermal conductivity, resistance to thermal shock, and the ability to expand and contract without compromising the refractory's structural integrity.
- Q:What are the recommended curing times for monolithic refractories?
- The recommended curing times for monolithic refractories can vary depending on the specific type of refractory and its application. However, in general, it is important to follow the manufacturer's guidelines for curing times to ensure the proper setting and development of the refractory material. For conventional castable refractories, a typical curing time can range from 24 to 48 hours. During this period, it is essential to control the temperature and humidity conditions to allow for the hydration and hardening of the castable. This curing time is crucial to achieve the desired strength and durability of the refractory lining. On the other hand, low cement or ultra-low cement castables may require a longer curing time due to their reduced water content. These refractories often need a curing period of 48 to 72 hours to allow for proper bonding and solidification. For gunning mixes or shotcrete applications, the curing time might be shorter, usually around 8 to 12 hours. This faster curing process is facilitated by the addition of accelerators to the mix, which promote rapid setting and hardening. It is important to note that these recommended curing times are just general guidelines, and specific recommendations may vary depending on factors such as ambient temperature, humidity, and the specific refractory material being used. Therefore, it is always advisable to consult the manufacturer's instructions or seek guidance from a refractory specialist to ensure optimal curing and performance of the monolithic refractory.
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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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