Alumina-Spinel Castable for Ladle
- Ref Price:
-
$1,312.11 - 1,603.69
/ m.t.
- Loading Port:
- China Main Port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 2 MT m.t.
- Supply Capability:
- 5000 Tons Per Month m.t./month
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General Information of Alumina-Spinel Castable for Ladle
ALRE alumina-spinel castable for ladle made strictly as per international standards, is known for its long operating life, excellent corrosion resistance and high refractoriness.
Technical data of Alumina-Spinel Castable for Ladle
Item | Alumina spinel castable | ||||
Al2O3 | % | ≥ | 72 | ||
MgO | % | ≥ | 10 | ||
CaO | % | — | |||
SiO2 | % | ≤ | 9 | ||
SiO2+ Fe2O3+ Al2O3 | % | ≤ | |||
Bulk density ≥ | g/cm3 | — | |||
C.C.S. (MPa) ≥ | 110℃×24hrs | 90 | |||
1500℃×3hrs | 100 | ||||
M.O.R.(MPa) ≥ | 110℃×24hrs | 11.5 | |||
1500℃×3hrs | 11.5 | ||||
Refractoriness (℃) ≥ | — | ||||
Grain size (mm) ≤ | — | ||||
Permanent linear change | 1500℃×2hrs | -0.2~0.35 | |||
1500℃×3hrs | — | ||||
Life time (hr) | — | ||||
Production line and Packing of Alumina-Spinel Castable for Ladle
Feature of Alumina-Spinel Castable for Ladle
Long operating life
Easy execution and mending
Excellent corrosion and scouring resistance of iron steel
Application of Alumina-Spinel Castable for Ladle
ALRE alumina-spinel castable could be used widely for lining of ladles in steel and iron industry.
- Q: What are the common failure modes of monolithic refractories in iron and steel applications?
- Monolithic refractories are widely used in iron and steel applications due to their excellent thermal shock resistance, high temperature stability, and mechanical strength. However, like any other material, they are not immune to failure. There are several common failure modes associated with monolithic refractories in iron and steel applications. 1. Spalling: Spalling is one of the most common failure modes of monolithic refractories. It refers to the detachment of refractory material from the surface due to thermal cycling, mechanical stress, or chemical reactions. Spalling can occur due to mismatched thermal expansion coefficients between the refractory and the surrounding structure, leading to cracking and subsequent detachment. 2. Erosion: Erosion is another prevalent failure mode in iron and steel applications. It occurs when the refractory material is subjected to the erosive action of molten metal, slag, or gases. The erosion can be a result of the physical impact of the flowing metal or the chemical attack by corrosive slag components. Erosion leads to the loss of refractory material, decreased lining thickness, and compromised performance. 3. Corrosion: Corrosion is a significant failure mode in iron and steel applications, particularly in contact with aggressive atmospheres or molten metal. Corrosion can result from chemical reactions between the refractory material and the corrosive agents, such as oxides, sulfides, or alkalis present in the environment. It leads to the formation of corrosion products, which can weaken the refractory lining and reduce its lifespan. 4. Thermal shock: Monolithic refractories are exposed to extreme temperature fluctuations in iron and steel applications. Rapid heating or cooling can lead to thermal shock, causing cracking and failure of the refractory material. Thermal shock can occur due to uneven heating or cooling, sudden changes in temperature, or thermal gradients within the refractory lining. 5. Abrasion: In certain iron and steel applications, monolithic refractories can be subjected to abrasive wear. This occurs when the refractory lining comes into contact with solid particles, such as metallic oxides, slags, or raw materials. The repeated impact and rubbing action of these particles can cause erosion and abrasion of the refractory material, leading to its failure. To mitigate these failure modes, proper refractory selection, installation techniques, and maintenance practices are crucial. Regular inspection, repair of damaged areas, and application of protective coatings can help extend the lifespan and performance of monolithic refractories in iron and steel applications.
- Q: What are the key properties of monolithic refractories?
- Monolithic refractories, which lack a definite form like bricks or tiles, are a type of refractory material. They are typically composed of a mixture of aggregates, binders, and additives that can be easily molded and installed in various industrial applications. The main characteristics of monolithic refractories include: 1. Exceptional heat resistance: Designed to endure extremely high temperatures, monolithic refractories are suitable for industries such as steel, cement, glass, and petrochemicals. They can maintain their strength and structural integrity even at temperatures exceeding 3000 degrees Fahrenheit. 2. Ability to withstand thermal shock: Monolithic refractories possess the capacity to resist sudden temperature changes, which can cause cracking or damage to the refractory. This property is crucial in environments where rapid heating or cooling occurs, such as furnaces or kilns. 3. Resistance to chemical attack: Monolithic refractories display excellent resistance to corrosion from molten metals, slag, gases, and other harsh substances. This makes them ideal for environments where contact with acidic or alkaline materials is common. 4. Low porosity: Monolithic refractories have low porosity, meaning they have a high density and are less permeable to gases and liquids. This property ensures that molten metals or corrosive substances cannot easily penetrate the refractory, contributing to its longevity and performance. 5. Easy installation and repair: Unlike traditional refractory materials like bricks, monolithic refractories can be easily molded and installed in various shapes and sizes. They can be applied using techniques such as spraying, casting, or ramming, allowing for faster installation and reduced downtime. Additionally, if any damage occurs, they can be easily repaired or patched. 6. Strong mechanical strength: Monolithic refractories possess sufficient mechanical strength to endure the stresses and pressures encountered during their service life. This guarantees their structural integrity, even under high load conditions. Overall, the versatile and reliable properties of monolithic refractories make them an excellent choice for a wide range of industrial applications that require resistance to high temperatures, chemicals, and thermal shock.
- Q: What are the considerations for repairing and patching monolithic refractories?
- When it comes to the repair and patching of monolithic refractories, there are several key factors that must be taken into consideration. First and foremost, it is crucial to thoroughly evaluate the extent and severity of the damage or deterioration. This assessment will help determine the most appropriate repair method and materials required. Minor cracks or small damages may only necessitate a simple patch or seal, whereas larger or more serious damage may require a complete replacement or a more extensive repair process. Secondly, the type of monolithic refractory material being utilized is a critical factor to consider. Different types of monolithic refractories possess varying properties and characteristics, such as thermal conductivity, chemical resistance, and mechanical strength. Therefore, it is vital to select a repair material that is compatible with the existing refractory material, ensuring proper bonding and optimal performance. Another factor to take into account is the operating conditions and environment in which the monolithic refractory is exposed. Variables such as temperature, pressure, chemical exposure, and abrasion can significantly impact the durability and longevity of the refractory material. Understanding these conditions will assist in selecting the appropriate repair materials and techniques that can withstand and perform well under these specific circumstances. Furthermore, it is imperative that the repair process is carried out by experienced personnel who possess knowledge about refractory materials and their installation. Improper repairs can lead to further damage or diminished performance, so it is essential to have skilled professionals who can execute the repair work correctly. Lastly, regular inspection and maintenance of the monolithic refractories are crucial in order to detect any potential damage or deterioration early on. Timely repairs and patching can prevent further deterioration and prolong the service life of the refractory material. In summary, the considerations for repairing and patching monolithic refractories involve evaluating the extent of damage, selecting compatible repair materials, understanding the operating conditions, employing skilled personnel, and conducting regular inspections and maintenance. By taking these factors into account, one can ensure effective repairs and the continued performance of monolithic refractories.
- 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: What are the factors affecting the thermal conductivity of monolithic refractories?
- The factors affecting the thermal conductivity of monolithic refractories include the composition and structure of the refractory material, the porosity and density of the material, the presence of any impurities or defects, the temperature at which the material is being used, and the presence of any external factors such as pressure or moisture.
- Q: What are the cost implications of using monolithic refractories in the iron and steel industry?
- The use of monolithic refractories in the iron and steel industry can have various cost implications. Firstly, the initial cost of monolithic refractories tends to be higher compared to traditional brick refractories. Monolithic refractories are typically made from high-quality raw materials and require specialized installation techniques, leading to higher upfront expenses. However, these higher upfront costs can be offset by the benefits provided by monolithic refractories in terms of performance, durability, and reduced maintenance requirements. One of the major cost implications of using monolithic refractories is their extended service life. Monolithic refractories have excellent thermal shock resistance and can withstand high temperatures, mechanical stress, and corrosive environments. This results in reduced downtime and fewer replacement or repair needs, leading to overall cost savings in the long run. Additionally, monolithic refractories offer flexibility in design and application. They can be easily shaped and installed to fit complex geometries, resulting in optimized furnace linings and improved energy efficiency. By minimizing heat loss, monolithic refractories can reduce fuel consumption and lower energy costs for the iron and steel industry. Furthermore, the installation and maintenance of monolithic refractories can be less labor-intensive compared to brick refractories. This can result in reduced labor costs and shorter installation time, leading to potential cost savings for the industry. Another cost implication of using monolithic refractories is their impact on productivity. Monolithic refractories provide improved thermal insulation, reduced slag adhesion, and enhanced resistance to wear and erosion. These properties can lead to increased production rates, improved product quality, and minimized process interruptions, ultimately translating into higher profitability for iron and steel manufacturers. It is important to note that the cost implications of using monolithic refractories can vary depending on the specific application, furnace type, and operating conditions. Therefore, a thorough cost-benefit analysis should be conducted to evaluate the overall economic impact of implementing monolithic refractories in the iron and steel industry.
- Q: How do monolithic refractories contribute to the reduction of downtime in iron and steel plants?
- Monolithic refractories contribute to the reduction of downtime in iron and steel plants by providing superior thermal insulation and resistance to high temperatures, reducing the risk of equipment failure and unplanned shutdowns. Their ability to withstand extreme conditions, such as molten metal and slag, allows for extended operational periods without frequent maintenance or replacement. Additionally, monolithic refractories offer quick and easy installation, repair, and maintenance, minimizing the time required for downtime and ensuring a more efficient and productive operation in iron and steel plants.
- Q: How do monolithic refractories perform in electric arc furnace roof applications?
- Monolithic refractories perform well in electric arc furnace roof applications due to their excellent thermal shock resistance, high temperature stability, and superior corrosion resistance. Additionally, monolithic refractories offer easy installation and maintenance, making them a reliable choice for electric arc furnace roofs.
- Q: How do monolithic refractories withstand thermal shock?
- Monolithic refractories possess unique properties and composition that enable them to endure thermal shock. Thermal shock occurs when there is a sudden alteration in temperature, leading to stress and potential damage to the refractory material. However, monolithic refractories are constructed to possess high resistance to thermal shock, and this is accomplished through various mechanisms. Firstly, the composition of monolithic refractories incorporates materials with low coefficients of thermal expansion. This implies that they undergo minimal alterations in size or volume when exposed to varying temperatures. This characteristic allows the refractory material to withstand thermal shock by minimizing the stress caused by temperature fluctuations. Secondly, monolithic refractories exhibit exceptional thermal conductivity. This quality enables them to efficiently transfer heat away from the hot regions, preventing localized overheating and diminishing the likelihood of thermal shock. The rapid dissipation of heat aids in maintaining a more even distribution of temperature within the refractory material, thereby reducing the chances of cracking or spalling. Furthermore, the binding agents employed in monolithic refractories play a vital role in enhancing their resistance to thermal shock. These binders provide strength to the refractory material and assist in preserving its integrity during thermal cycling. Additionally, the binders contribute to the refractory's ability to withstand thermal shock by reducing the permeability of the material, thus preventing the infiltration of hot gases or liquids that could cause damage. Moreover, the installation technique of monolithic refractories plays a significant role in their capacity to endure thermal shock. Typically, monolithic refractories are applied as a single, uninterrupted layer, eliminating the weak points such as joints and seams that exist in other refractory systems. This seamless installation method ensures superior resistance to thermal shock as there are no vulnerable points for cracks to propagate. In conclusion, monolithic refractories effectively withstand thermal shock through a combination of factors including their low coefficients of thermal expansion, high thermal conductivity, appropriate binding agents, and seamless installation techniques. These properties and design considerations enable monolithic refractories to proficiently handle rapid temperature changes and maintain their structural integrity, making them ideal for applications involving thermal cycling and extreme variations in temperature.
- Q: How do monolithic refractories improve the performance of ladles and tundishes?
- Monolithic refractories play a crucial role in improving the performance of ladles and tundishes in various ways. Firstly, they enhance the thermal insulation properties of these vessels. Ladles and tundishes are exposed to extremely high temperatures during the steelmaking process, and monolithic refractories act as a barrier, preventing the heat from escaping and maintaining the desired temperature. This insulation helps in minimizing heat loss and reducing energy consumption. Secondly, monolithic refractories offer excellent resistance to chemical corrosion and erosion. The ladles and tundishes come into contact with molten metal and various fluxes, which can cause severe corrosion and erosion. The use of monolithic refractories protects the vessels from chemical attacks and extends their lifespan. This not only saves costs associated with frequent repairs or replacements but also ensures the integrity and safety of the vessels. Furthermore, monolithic refractories provide superior mechanical strength and structural stability. Ladles and tundishes need to withstand the weight of the molten metal and the stresses induced during pouring and handling. Monolithic refractories possess high mechanical strength, allowing them to withstand these loads and maintain their shape and integrity. This leads to a reduction in downtime and increases the productivity of the steelmaking process. Moreover, monolithic refractories offer flexibility in design and installation. They can be shaped and applied in various configurations, allowing for customization according to the specific requirements of ladles and tundishes. This flexibility ensures a better fit and improved performance of the refractories, ultimately enhancing the overall efficiency of the vessels. In summary, monolithic refractories improve the performance of ladles and tundishes by providing enhanced thermal insulation, superior resistance to chemical corrosion and erosion, increased mechanical strength, and flexibility in design and installation. These benefits contribute to the longevity, efficiency, and cost-effectiveness of ladles and tundishes in steelmaking operations.
We are an industrial enterprise of refractories integrating the scientific research, design, production and engineering service. With first-class quality of products, high-efficient and prompt after-sale service, our products are not only well sold in many domestic large steel enterprises and coking enterprises, but also widely exported to more than 23 countries and regions.
1. Manufacturer Overview
| Location | Henan, China |
| Year Established | 2007 |
| Annual Output Value | Above US$ 200 Million |
| Main Markets | North America;Asia;Western Europe;Africa;Russia;Middle East |
| Company Certifications | ISO 9001:2008 |
2. Manufacturer Certificates
| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period |
3. Manufacturer Capability
| a) Trade Capacity | |
| Nearest Port | Tianjin |
| Export Percentage | 20% - 30% |
| No.of Employees in Trade Department | 10-20 People |
| Language Spoken: | English; Chinese |
| b) Factory Information | |
| Factory Size: | Above 150,000 square meters |
| No. of Production Lines | Above 10 |
| Contract Manufacturing | Installation guide, OEM Service Offered |
| Product Price Range | High; Average |
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Alumina-Spinel Castable for Ladle
- Ref Price:
-
$1,312.11 - 1,603.69
/ m.t.
- Loading Port:
- China Main Port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 2 MT m.t.
- Supply Capability:
- 5000 Tons Per Month m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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