Monolithic Refractories for Iron and Steel Industry:Gunning Mass Refractory Material
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 20000 kg
- Supply Capability:
- 100000000 kg/month
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General Information of Gunning Mass
Gunning mass refractories is product that is used in various part of furnace as Monolithic Refractories that added hydraulic alumina cement to refractory aggregate.
Our Company is producing suitable product to installation and working condition through a quality control, this product which is minimizing alumina cement for using various dispersants and ultra fine powder so it has excellent abrasion resistance, erosion resistance, spalling resistance and chemical resistance . It widely used in part of various industrial furnace including incinerator, nonferrous metal furnace etc.
Features of Gunning Mass
High refractoriness, High refractoriness under load
High density, low porosity
Good slag resistance and corrosion resistance
High strength and wear resistance
Good resistance to flake performance
Good thermal shock stability
Scouring resistance
Good hot strength
Technical Data Sheet of Gunning Mass
CA-190 | CA-185 | CA-180 | CA-175 | CA-170 | CA-165 | CA-160 | CA-155 | CA-150 | CA-140 | |||
Properties | ||||||||||||
Application Limit Temp | 1,800 | 1,800 | 1,750 | 1,700 | 1,700 | 1,650 | 1,600 | 1,550 | 1,500 | 1,400 | ||
Bulk Density (g/cm3) | 2.9 | 2.85 | 2.8 | 2.6 | 2.5 | 2.3 | 2.15 | 2.1 | 2.1 | 2 | ||
Water Required for Casting(%) | 9-10 | 9-10 | 11-12 | 11-12 | 10-13 | 11-14 | 12-15 | 13-16 | 13-16 | 13-17 | ||
CCS/MOR | 110ºCx24h | 55(9) | 30(6) | 30(6) | 30(6) | 25(5) | 25(5) | 20(4) | 20(4.5) | 25(5) | 20(5) | |
1,200ºCx3h | 50(8) | 35(7) | 35(7) | 30(7) | 20(4) | 17(3.5) | 15(3.5) | 15(2.5) | 17(4) | 14(3) | ||
1,400ºCx3h | 60(10) | 50(8) | 60(10) | 60(10) | 50(12) | 45(8) | 40(7) | 40(7) | 32(7.5) | - | ||
Permanent Linear Change(%) | 110ºCx24h | -0.03 | -0.03 | -0.06 | -0.06 | -0.06 | -0.06 | -0.06 | -0.06 | -0.06 | -0.06 | |
1,200ºCx3h | -0.1 | -0.1 | -0.15 | -0.15 | -0.2 | -0.2 | -0.16 | -0.3 | -0.25 | -0.3 | ||
1,400ºCx3h | -0.2 | -0.2 | -1 | -1 | -0.8 | -1 | -1 | -0.7 | - | - | ||
Thermal conductivity(W/m.k) | 400ºC | 0.95 | 0.95 | 0.92 | 0.92 | 0.8 | 0.72 | 0.68 | 0.68 | 0.65 | 0.6 | |
1,000ºC | 1.1 | 1.05 | 1.02 | 1.02 | 0.9 | 0.85 | 0.88 | 0.8 | 0.76 | 0.71 | ||
Chemical Analysis(%) | Al2O3 | 92 | 88 | 82 | 75 | 62 | 55 | 50 | 47 | 44 | 35 | |
SiO2 | - | - | 10 | 10 | 29 | 40 | 43 | 45 | 50 | 55 | ||
Photo of Gunning Mass
- Q:How are monolithic refractories recycled or disposed of at the end of their lifespan?
- Monolithic refractories, which are commonly used in high-temperature industrial applications, can be recycled or disposed of at the end of their lifespan through several methods. The chosen method depends on the specific type of monolithic refractory and its composition. One common approach to recycling monolithic refractories is through a process known as reclamation. Reclamation involves collecting used refractory materials and processing them to remove any impurities or contaminants. The reclaimed refractory material can then be crushed, ground, or milled to produce a fine powder that can be used as a raw material in the production of new refractories. Another method of recycling monolithic refractories is through thermal treatment. This involves subjecting the used refractory material to high temperatures in a controlled environment, such as a kiln or furnace. The heat helps to break down the refractory material, removing any binders or impurities. The resulting material can then be reused as a raw material or incorporated into other applications, such as aggregates for construction. In cases where recycling is not feasible, monolithic refractories can be disposed of in specialized facilities designed for handling and treating hazardous waste. These facilities ensure that the refractory material is properly contained and treated to minimize any potential environmental impact. This disposal method is typically used for refractories that contain hazardous substances or cannot be recycled due to their composition. It is important to note that the proper disposal or recycling method for monolithic refractories should comply with local regulations and guidelines. These regulations aim to ensure the safe handling, treatment, and disposal of these materials, taking into consideration their potential environmental and health impacts. Therefore, it is crucial for industries and businesses to work closely with waste management professionals and follow the appropriate procedures to responsibly manage monolithic refractories at the end of their lifespan.
- Q:What are the key factors affecting the installation and curing of monolithic refractories?
- The installation and curing of monolithic refractories can be affected by several important factors: 1. Material selection: Choosing the right monolithic refractory material is crucial as it determines how it will be installed and cured. Different materials have different requirements, so it is important to select the appropriate material for the specific application. 2. Surface preparation: Properly preparing the surface is essential for the successful installation and curing of monolithic refractories. The surface must be clean, free from contaminants, and properly roughened to ensure good adhesion of the refractory material. 3. Mixing and proportioning: How the refractory material is mixed and proportioned plays a significant role in its installation and curing. Following the manufacturer's instructions for mixing ratios and ensuring thorough mixing is important to achieve a uniform mixture. 4. Application technique: The technique used to apply the monolithic refractory material can greatly impact its installation and curing. Employing proper application techniques, such as gunning, casting, or ramming, is necessary to ensure uniformity and proper bonding with the substrate. 5. Temperature control: Controlling the temperature during installation and curing is critical for achieving the desired properties in the monolithic refractory. The curing process should be carried out at the recommended temperature, and sudden temperature changes should be avoided to prevent thermal stresses. 6. Moisture content: The moisture content of the refractory material and the surrounding environment can affect its installation and curing. Excessive moisture can cause shrinkage, cracking, or poor bonding, while insufficient moisture can hinder proper curing. Maintaining the optimum moisture content for the specific refractory material is important. 7. Curing time: The required curing time for monolithic refractories varies depending on the material and application. It is crucial to follow the recommended curing time to allow for proper strength development and dimensional stability. 8. Environmental conditions: Environmental factors, such as humidity, temperature, and air circulation, can influence the installation and curing of monolithic refractories. It is important to maintain suitable environmental conditions to facilitate proper drying and curing. In conclusion, understanding and addressing these key factors are essential to ensure the successful installation and curing of monolithic refractories, leading to improved performance and longevity of the refractory lining.
- Q:How do monolithic refractories provide thermal insulation in the iron and steel industry?
- The iron and steel industry heavily relies on monolithic refractories for thermal insulation. These refractories are extensively used to line furnaces and other high-temperature equipment involved in the production processes. Monolithic refractories excel in thermal insulation due to their ability to withstand extreme temperatures without degradation or melting. They are specifically designed to resist high heat, enabling their usage in environments with temperatures reaching several thousand degrees Celsius. By enduring such extreme conditions, these refractories effectively prevent heat transfer to the surrounding structure, thereby ensuring insulation. Another key aspect of monolithic refractories' thermal insulation is their low thermal conductivity. These materials possess a low thermal conductivity, rendering them inefficient in conducting heat. Instead, they trap heat within their structure and minimize its transfer to the surrounding equipment or environment. This characteristic is instrumental in maintaining optimal temperatures inside furnaces and other high-temperature equipment, enabling efficient and controlled metal production. Moreover, monolithic refractories can be applied as a thick lining layer, further establishing an additional barrier between the high-temperature environment and the surrounding equipment. The thickness of the refractory lining acts as a buffer, reducing heat transfer and mitigating the impact of high temperatures on the structural integrity of the equipment. In addition to providing thermal insulation, monolithic refractories also exhibit exceptional 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, guaranteeing consistent and reliable insulation over time. In summary, monolithic refractories contribute to 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 effectively maintain the desired temperature inside equipment and safeguard the surrounding structure from the intense heat generated during metal production processes.
- Q:What are the main applications of monolithic refractories in the iron and steel industry?
- The iron and steel industry heavily relies on monolithic refractories due to their versatile applications. In this industry, monolithic refractories play a vital role in several areas: 1. Blast Furnaces: When converting iron ore into molten iron, blast furnaces are crucial components. The inner walls of blast furnaces are lined with monolithic refractories, which provide insulation and protection against extreme temperatures and corrosive environments. These refractories maintain the furnace's integrity and efficiency, ensuring seamless operation and extended service life. 2. Ladles and Tundishes: Ladles and tundishes are vessels used to transport molten metal from blast furnaces to the next processing stage. Monolithic refractories are used to line these vessels, as they can withstand high temperatures and chemical reactions that occur during metal transfer. They prevent heat loss, minimize metal contamination, and enhance overall process efficiency. 3. Steelmaking Furnaces: Electric arc furnaces (EAFs) and basic oxygen furnaces (BOFs) are among the various types of steelmaking furnaces that extensively employ monolithic refractories. These furnaces require lining materials that can withstand extreme temperatures, chemical reactions, and mechanical stresses. Monolithic refractories provide exceptional thermal insulation, erosion resistance, and structural integrity, enabling efficient and reliable steel production. 4. Continuous Casting: Continuous casting is a widely used method for producing large quantities of steel. During this process, molten steel is continuously poured into a water-cooled mold, solidifying it into solid steel billets or slabs. Monolithic refractories are used to line the mold's walls and floor, ensuring thermal insulation and preventing the solidified steel from adhering to the mold. They help maintain the desired casting shape and improve the final product's quality. 5. Reheating Furnaces: Reheating furnaces are used to heat steel billets or slabs before further processing. Monolithic refractories line the walls and roof of these furnaces since they can withstand high temperatures and thermal cycling. They provide insulation, reduce heat loss, and enhance the reheating process's efficiency. In conclusion, monolithic refractories are indispensable in the iron and steel industry as they possess high-temperature resistance, chemical stability, and mechanical strength. They contribute to the durability and efficiency of various equipment and processes, ensuring seamless operations and high-quality steel production.
- Q:How do monolithic refractories enhance the efficiency of reheating furnaces?
- Monolithic refractories enhance the efficiency of reheating furnaces by providing better thermal insulation, reducing heat loss, and improving the overall heat transfer within the furnace. These refractories have excellent resistance to high temperatures and thermal shock, allowing them to withstand extreme conditions for prolonged periods. By minimizing heat loss and maintaining a consistent temperature, they ensure that the reheating process is more energy-efficient, resulting in reduced fuel consumption and increased productivity.
- Q:How do monolithic refractories enhance the performance of ladles and tundishes?
- Monolithic refractories play a crucial role in enhancing the performance of ladles and tundishes in several ways. Firstly, monolithic refractories are known for their high thermal stability and resistance to thermal shock. Ladles and tundishes are subjected to extreme temperatures and thermal cycling during the process of molten metal transfer. Monolithic refractories provide excellent insulation and structural integrity, ensuring that the ladles and tundishes can withstand these harsh conditions without experiencing cracking or failure. Furthermore, monolithic refractories offer exceptional corrosion resistance. In the ladle and tundish environments, molten metal, slag, and other chemicals can cause corrosion and erosion of the lining. Monolithic refractories are designed to resist these corrosive agents, extending the service life of ladles and tundishes and minimizing the need for frequent repairs or replacements. Another advantage of monolithic refractories is their ability to form a tight and seamless lining. Unlike traditional brick or tile linings, which have joints that can deteriorate over time, monolithic refractories are typically applied as a single, continuous layer. This seamless lining significantly reduces the risk of metal and slag penetration, ensuring better containment of the molten metal and preventing contamination. Moreover, monolithic refractories offer versatility and ease of installation. They can be easily shaped and applied to various complex geometries, allowing for customized linings in ladles and tundishes. This versatility also enables faster installation and reduces downtime during maintenance and repairs. Overall, the use of monolithic refractories in ladles and tundishes contributes to improved performance, increased operational efficiency, and reduced costs. Their ability to withstand extreme temperatures, resist corrosion, provide a tight lining, and offer ease of installation makes them a preferred choice in the steel and foundry industries.
- Q:What are the typical operating temperatures for monolithic refractories?
- The specific composition and type of refractory material determine the typical operating temperatures for monolithic refractories. Generally, these refractories are designed to endure high temperatures ranging from 1500°C (2732°F) to 1800°C (3272°F) and sometimes even higher. Industries such as steelmaking, cement production, glass manufacturing, and petrochemical processing commonly utilize these refractories, subjecting them to extreme thermal conditions. Temperature limits vary for different types of monolithic refractories. For example, basic refractories made of magnesia or dolomite can withstand temperatures up to 1800°C (3272°F). Conversely, alumina-based refractories typically handle temperatures up to 1700°C (3092°F). Silicon carbide-based refractories exhibit even higher temperature resistance, with the capacity to endure temperatures exceeding 2000°C (3632°F). Choosing the appropriate monolithic refractory material is crucial, considering the specific operating temperature requirements of the application. Using refractories beyond their recommended temperature limits may result in thermal shock, spalling, reduced performance, equipment failure, or safety hazards. Therefore, it is essential to consult with refractory manufacturers or experts in the field to ensure the correct selection and optimal performance of monolithic refractories in high-temperature applications.
- Q:How do monolithic refractories withstand the mechanical impacts in furnace door applications?
- Monolithic refractories have been specially designed to endure the mechanical impacts experienced in furnace door applications as a result of their unique properties and composition. These refractories are manufactured from a solitary piece of material, which eliminates the necessity for joints or seams that are susceptible to cracking or failure under mechanical stress. An essential characteristic of monolithic refractories is their elevated density, which grants them exceptional strength and resistance against mechanical impacts. Their compact structure makes them less prone to cracking or fracturing when exposed to sudden or repeated impacts, such as the opening or closing of a furnace door. Along with their density, monolithic refractories also possess substantial tensile strength and toughness. These qualities enable them to absorb and disperse the energy from mechanical impacts, reducing the likelihood of damage or failure. This is particularly crucial in furnace door applications, where the refractories are constantly subjected to the stress of door movement. Moreover, monolithic refractories frequently incorporate additives or bonding agents that enhance their mechanical properties. These additives may consist of fibers or aggregates that fortify the structure and improve impact resistance. They can also enhance the refractory's ability to endure thermal cycling, which is common in furnace door applications. Overall, monolithic refractories are meticulously engineered to withstand the mechanical impacts encountered in furnace door applications. Their dense composition with high strength, combined with the utilization of additives and bonding agents, guarantees their durability and longevity in these demanding environments.
- Q:What are the factors affecting the thermal expansion of monolithic refractories?
- The thermal expansion of monolithic refractories is influenced by several factors. These factors include the chemical composition of the refractory material, particle size, temperature, thermal history, porosity, binder content, and thermal shock. 1. The thermal expansion of the refractory material is significantly influenced by its chemical composition. Different chemical elements and compounds have varying coefficients of thermal expansion. For instance, materials with high levels of silica generally have lower coefficients of thermal expansion compared to those with higher concentrations of alumina. 2. The particle size distribution of the refractory material can also impact its thermal expansion. Smaller particle sizes result in higher thermal expansion due to increased surface area and greater particle contact. 3. The temperature at which the monolithic refractory is exposed plays a crucial role in its thermal expansion. As the temperature increases, the particles gain more kinetic energy, leading to increased movement and expansion. Different refractory materials exhibit significant expansion within specific temperature ranges. 4. 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. The porosity of the monolithic refractory also affects its thermal expansion. Higher porosity generally results in higher thermal expansion due to the presence of voids and gaps within the material. 6. The type and amount of binder used in monolithic refractories impact their thermal expansion. Different binders have different coefficients of thermal expansion, which can influence the overall expansion behavior of the material. 7. Rapid temperature changes, such as 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 thermal expansion behavior. Understanding these factors is essential when selecting the appropriate monolithic refractory material for specific applications. The thermal expansion characteristics directly affect the performance and longevity of the refractory in high-temperature environments.
- Q:How do monolithic refractories withstand chemical attack from molten metals and slag?
- Monolithic refractories withstand chemical attack from molten metals and slag due to their unique composition and properties. These refractories are made of a single, homogeneous material, which provides them with better resistance against chemical corrosion. Additionally, monolithic refractories are designed to have low porosity and high density, which limits the penetration of molten metals and slag into their structure. These materials also have high melting points, enabling them to withstand the extreme temperatures present in industrial processes. Overall, the combination of their composition, low porosity, high density, and high melting points makes monolithic refractories highly resistant to chemical attack from molten metals and slag.
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Monolithic Refractories for Iron and Steel Industry:Gunning Mass Refractory Material
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 20000 kg
- Supply Capability:
- 100000000 kg/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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