• Upper & lower nozzles For Ladle System 1
  • Upper & lower nozzles For Ladle System 2
Upper & lower nozzles For Ladle

Upper & lower nozzles For Ladle

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
10 set
Supply Capability:
50000 set/month

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Product Description:

 

 

1)High Temperature Burnt Slide Plate

This product adopts tabular alumina, carbonaceous material and zirconia-containing material as main raw materials, adds in high performance antioxidants, uses phenolic resin as binder, formed under high-pressure and burned under high temperature. Mainly used in large and medium-sized ladle.

Physical and chemical properties: 

Chemical and Physical Properties

Al-C Slide Gate Plate

Al-Zr-C Slide Gate Plate

LQSP-70

LQSP -75

LQSP -80

LQSP -85

LQSP -86

LQSP -70

LQHSP-75

LQHSP -77

Al2O3,%

70

75

80

85

86

70

75

77

C,%

7

7

5

5

4

7

7

7

ZrO2,%

-

-

-

-

-

6

6

2.5

A.P.,%   max

10

10

10

10

7

10

10

10

B.D.,g/cm3

2.8

2.9

2.9

3.0

2.95

3.00

3.05

2.90

C.C.S.,   MPa  min

65

70

100

100

100

110

115

100

 

2) Low Temperature Burnt Slide Plate

Tabular alumina, zirconia-containing material and spinel as major raw materials, adding in special metal, using phenolic resin as binder, being burned under low temperature during producing process. Mainly used in small and medium-sized ladles.

Physical and chemical properties: 

Chemical and Physical Properties

Low Temperature Burnt Slide Gate Plate

LQLTSP-70

LQLTSP-75

LQLTSP-80

LQLTSP-85

LQLTSP-86

Al2O3,%  min

70

75

80

85

86

C,%

≥5

≥5

≥5

≥4

4

A.P.,%  max

10

10

10

8

7

B.D.,g/cm

2.9

2.95

3.00

3.10

2.95

C.C.S.,

MPa ≥

90

90

100

120

100

 

3) Unburned Slide Plate

 

Without being burned, tar impregnated and distilled, simple processing. Mainly used in small and medium-sized ladles.

 

Physical and chemical properties:  

Chemical and Physical Properties

Al-C Slide Gate Plate

LQUSP-70

LQUSP-75

LQUSP-80

LQUSP-85

LQUSP-86

Al2O3,% 

70

75

80

85

86

C,%

7

7

5

5

4

A.P.,%  max

10

10

8

10

7

B.D. g/cm3   min

2.8

2.9

3.0

3.0

2.95

C.C.S., MPa  min

65

70

100

100

100


Q:What are the recommended installation techniques for monolithic refractories?
The recommended installation techniques for monolithic refractories depend on the specific type and application of the refractory material. However, there are some general guidelines that can be followed for most monolithic refractory installations. 1. Surface Preparation: Before installing monolithic refractories, it is crucial to ensure that the surface is clean, dry, and free from any loose particles or contaminants. This can be achieved by removing any existing refractory materials, cleaning the surface thoroughly, and allowing it to dry completely. 2. Mixing: Monolithic refractories are typically supplied in a dry or wet form, depending on the specific material. If the refractory is supplied in a dry form, it needs to be mixed with water or a suitable liquid binder to form a workable consistency. It is important to follow the manufacturer's guidelines for the correct mixing ratio and mixing time to ensure proper bonding and setting of the refractory material. 3. Application: The application technique for monolithic refractories can vary depending on the specific material and the desired installation method. Some common techniques include troweling, gunning, ramming, and casting. - Troweling: This technique involves manually applying the refractory material using a trowel. It is typically used for thin linings or patching small areas. - Gunning: Gunning is a method of applying refractory material using a gunning machine or a hand-held gun. It is suitable for large areas or areas that are difficult to access. The refractory material is mixed with water or a liquid binder and sprayed onto the surface at a high velocity. - Ramming: Ramming involves compacting the refractory material into place using a ramming tool or a pneumatic hammer. It is commonly used for forming furnace linings or repairing damaged areas. - Casting: Casting refers to pouring the refractory material into a mold to form a desired shape or lining. It is often used for creating complex shapes or large-sized components. 4. Curing and Drying: After the refractory material is applied, it needs to be properly cured and dried to achieve its maximum strength and thermal properties. The curing and drying process can vary depending on the specific material, but typically involves controlled heating at a gradual rate to remove any remaining moisture and to allow the refractory to set and harden properly. It is important to note that these are general guidelines, and it is always recommended to consult the manufacturer's instructions and specifications for the specific monolithic refractory material being used. Following the recommended installation techniques will help ensure the proper performance and longevity of the refractory lining.
Q:How do monolithic refractories withstand thermal shock and mechanical stress?
Monolithic refractories are designed to withstand thermal shock and mechanical stress due to their unique composition and installation process. These refractories are made from a single, continuous material, eliminating any joints or seams that could weaken the structure. Additionally, they have a high thermal conductivity which allows them to efficiently distribute and dissipate heat, minimizing thermal gradients that can cause cracking. Furthermore, the installation technique involves forming the refractory in situ, ensuring a tight fit and reducing the likelihood of mechanical failure. Overall, the combination of their composition, thermal conductivity, and installation method enables monolithic refractories to withstand thermal shock and mechanical stress effectively.
Q:What are the main factors affecting the erosion resistance of monolithic refractories?
The erosion resistance of monolithic refractories is influenced by several key factors. These factors include the chemical composition of the refractory material, the microstructure of the material, the temperature and environment in which it is used, and the mechanical properties of the material. The chemical composition of the monolithic refractory plays a crucial role in its erosion resistance. Certain chemical elements and compounds can enhance the resistance of the refractory to erosion, while others may make it more susceptible. For example, the addition of alumina (Al2O3) in the refractory composition can improve its resistance to erosion, as it forms a protective layer on the surface. On the other hand, the presence of impurities or excess amounts of certain elements can weaken the refractory and increase its susceptibility to erosion. The microstructure of the monolithic refractory is another important factor affecting erosion resistance. The refractory's microstructure refers to the arrangement and distribution of its constituent particles. A well-structured microstructure with a uniform distribution of particles can provide better erosion resistance as it ensures a more even distribution of load during exposure to erosive forces. Conversely, a poorly structured microstructure with clusters or weak bonding between particles may lead to localized erosion and failure. The temperature and environment in which the refractory is used also significantly influence erosion resistance. High temperatures can cause thermal stresses, chemical reactions, and phase changes in the refractory material, all of which can affect its erosion resistance. Additionally, the presence of corrosive gases, liquids, or slags can accelerate erosion by promoting chemical reactions or attacking the refractory material, leading to its degradation. Lastly, the mechanical properties of the monolithic refractory, such as its strength, hardness, and toughness, contribute to erosion resistance. A refractory with higher mechanical strength and hardness can withstand erosive forces better than a weaker material. Similarly, a higher toughness helps the refractory resist cracking or spalling when subjected to impact or thermal shock, reducing its vulnerability to erosion. In summary, the erosion resistance of monolithic refractories is influenced by the chemical composition, microstructure, temperature and environment, and mechanical properties of the material. Understanding and optimizing these factors can help in developing refractories with improved erosion resistance for various industrial applications.
Q:How do monolithic refractories impact the quality of iron and steel products?
Monolithic refractories play a crucial role in enhancing the quality of iron and steel products. These refractories are used to line the furnaces, ladles, and other equipment involved in the production process. By providing excellent thermal insulation and resistance to high temperatures, monolithic refractories help maintain stable and controlled heating conditions, which is essential for achieving desired chemical compositions and microstructures in iron and steel. Moreover, these refractories minimize heat loss, prevent contamination, and reduce the formation of impurities, thus ensuring the production of high-quality and defect-free iron and steel products.
Q:What are the advantages of using low-moisture castables in the iron and steel industry?
Low-moisture castables offer numerous benefits to the iron and steel industry. Firstly, their lower water content results in shorter drying times, which is crucial in this fast-paced industry. This reduction in overall production time allows for quicker turnaround and increased efficiency. Secondly, low-moisture castables exhibit superior strength and durability when compared to traditional castables. They can withstand extreme temperatures and harsh environments without cracking or breaking. This resilience is essential in an industry marked by high heat and abrasion, ensuring that the castables maintain their structural integrity and endure demanding conditions. Additionally, low-moisture castables boast excellent thermal shock resistance. This means they can handle rapid temperature changes without experiencing cracks or spalling. In an industry that frequently relies on heating and cooling processes, this attribute is highly advantageous. Moreover, low-moisture castables possess a higher density than traditional castables, resulting in improved insulation properties and lower thermal conductivity. This insulation efficiency conserves energy and minimizes heat loss during various processes, ultimately leading to significant cost savings. Lastly, low-moisture castables offer versatility in their application. They can be utilized for various purposes in the iron and steel industry, serving as linings for ladles, furnaces, tundishes, and other high-temperature equipment. This versatility allows for greater flexibility in designing and constructing the necessary infrastructure for iron and steel production. In conclusion, the utilization of low-moisture castables in the iron and steel industry provides a range of advantages, including reduced drying time, increased strength and durability, enhanced thermal shock resistance, improved insulation properties, and versatile application possibilities. These benefits contribute to more efficient and cost-effective operations in this industry.
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 are monolithic refractories installed and repaired in iron and steel applications?
Monolithic refractories are installed and repaired in iron and steel applications using specific procedures to ensure optimal performance and longevity. The installation process typically involves the following steps: 1. Surface preparation: The surface where the monolithic refractory will be installed needs to be properly cleaned and prepared. This includes removing any loose material, dirt, and dust. It is crucial to have a smooth and clean substrate to ensure good adherence of the refractory material. 2. Mixing the refractory material: Monolithic refractories are typically supplied as dry powders or granules that need to be mixed with water or a specific bonding agent to form a workable consistency. The mixing process should be done according to the manufacturer's instructions to achieve the desired properties of the refractory. 3. Application: The mixed refractory material is then applied to the prepared surface using various techniques such as troweling, spraying, or casting. The choice of application method depends on the specific requirements of the installation and the type of monolithic refractory being used. 4. Curing: After the refractory material is applied, it needs to be properly cured to achieve its maximum strength and durability. Curing can be done by air drying, using heat, or a combination of both, depending on the specific refractory material being used. The curing process should be carried out gradually and according to the manufacturer's recommendations. When it comes to repairs of monolithic refractories in iron and steel applications, the following steps are generally followed: 1. Assessment: The damaged area or component needs to be thoroughly assessed to determine the extent of the damage and the appropriate repair method. 2. Removal of damaged material: The damaged monolithic refractory material is carefully removed using appropriate tools and techniques. It is important to remove all the damaged material while ensuring that the underlying substrate is not further compromised. 3. Surface preparation: Similar to the installation process, the surface where the repair will be carried out needs to be properly cleaned and prepared. Any loose material, dirt, and dust should be removed to create a clean and smooth substrate. 4. Application of repair material: The repair material, which is typically the same or similar to the original monolithic refractory, is mixed and applied to the damaged area. The application method may vary depending on the nature of the repair and the specific requirements of the refractory material. 5. Curing and post-repair inspection: The repaired area should be properly cured and inspected to ensure the quality and effectiveness of the repair. Curing and inspection procedures should adhere to the manufacturer's guidelines. In summary, the installation and repair of monolithic refractories in iron and steel applications require careful surface preparation, proper mixing and application of the refractory material, and appropriate curing procedures. Following these steps in a meticulous manner ensures reliable and durable refractory linings, which are essential for the efficient operation of iron and steel processes.
Q:What are the recent developments in monolithic refractories for the iron and steel industry?
In recent years, there have been several significant developments in monolithic refractories for the iron and steel industry. Monolithic refractories play a crucial role in the production of iron and steel, as they provide high-temperature resistance and insulation to the lining of furnaces and other equipment used in the industry. One of the key advancements in monolithic refractories is the development of advanced alumina-based castables. These castables offer superior thermal shock resistance, high strength, and excellent corrosion resistance, making them ideal for use in the iron and steel industry. They can withstand extreme temperatures and mechanical stresses, ensuring longer service life and reduced downtime for maintenance. Another notable development is the introduction of low-cement and ultra-low cement castables. These castables have a reduced cement content compared to traditional castables, resulting in improved refractory properties. They offer higher hot strength, reduced porosity, and enhanced resistance to slag and metal corrosion. This allows for increased productivity and efficiency in iron and steel manufacturing processes. Furthermore, there have been advancements in the use of insulating refractories in the iron and steel industry. Insulating castables and bricks are now being used to line ladles, tundishes, and other equipment, providing better insulation and energy efficiency. These materials help to reduce heat loss and improve thermal efficiency, resulting in cost savings and reduced environmental impact. Additionally, the development of monolithic refractories with improved installation techniques has been a significant development. Traditional brick lining methods require skilled labor and a longer installation time. However, with the introduction of gunning and shotcreting techniques, the installation process has become faster and more efficient. These techniques involve spraying refractory materials onto the lining surface, ensuring better adherence and reducing the risk of lining failure. Overall, the recent developments in monolithic refractories for the iron and steel industry have focused on improving thermal shock resistance, corrosion resistance, insulation properties, and installation techniques. These advancements have resulted in increased efficiency, reduced downtime, and improved productivity in the iron and steel manufacturing processes.
Q:How do monolithic refractories provide thermal insulation in the iron and steel industry?
Monolithic refractories provide thermal insulation in the iron and steel industry by forming a protective barrier that minimizes heat transfer. They have low thermal conductivity, preventing the rapid transfer of heat from the hot environment to the cooler surroundings. This insulation property helps to maintain high temperatures within furnaces and other equipment, ensuring efficient and consistent heat distribution for the iron and steel production processes.
Q:How do monolithic refractories resist corrosion and erosion in the iron and steel industry?
Monolithic refractories in the iron and steel industry are designed to resist corrosion and erosion through a combination of their composition and application techniques. Firstly, the composition of monolithic refractories includes high-quality raw materials such as alumina, magnesia, and silica. These materials possess excellent resistance to corrosion and erosion. Alumina, for example, is highly resistant to chemical attack and can withstand high temperatures, making it ideal for protecting against the corrosive nature of the iron and steel industry. In addition to the choice of materials, the application techniques used in installing monolithic refractories also play a crucial role in their resistance to corrosion and erosion. Monolithic refractories are typically installed using various methods such as gunning, ramming, or casting. These techniques ensure a tight and seamless bond between the refractory and the steel structure, minimizing the chances of corrosion and erosion. Furthermore, monolithic refractories can be customized to suit the specific needs of different parts of the iron and steel industry. For example, areas exposed to molten metal require refractories with high thermal conductivity and excellent resistance to chemical attack. By tailoring the refractory to the specific application, it becomes more effective in resisting corrosion and erosion. Moreover, monolithic refractories are often designed with additives or binders that enhance their resistance to corrosion and erosion. These additives can provide additional protection against chemical attacks from molten metal or corrosive gases, making the refractory even more durable in harsh conditions. Overall, monolithic refractories resist corrosion and erosion in the iron and steel industry due to their composition, application techniques, customization, and the inclusion of additives. By combining these factors, monolithic refractories provide excellent protection to the steel structures, ensuring their longevity and efficiency in the challenging environments of the iron and steel industry.

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