Monolithic Refractories Zirconia Slide Gate Nozzle Upper and Lower Nozzle Brick for Iron and Steel Industry
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 100000 m.t./month
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Quick Details
Place of Origin: | Shandong, China (Mainland) | Shape: | Plate | Material: | SiC,Zirconia,corundum |
SiO2 Content (%): | 0.2 | Al2O3 Content (%): | 0.3 | MgO Content (%): | less |
CaO Content (%): | less | Refractoriness (Degree): | 1770°< Refractoriness< 2000° | CrO Content (%): | less |
SiC Content (%): | 7% | Model Number: | B60,B50,C40 | Brand Name: | Shikai |
Density: | 3.0g/cm3 | Al2O3: | 85% | Compressive strength: | 100Mpa |
Apparent Porosity: | 10% | Refractoriness: | more than 1790℃ | Advantage: | high refractoriness, good thermal shock resistance, erosion resistance |
Usage: | steel plant ladle and tundish | Packing: | carton,pallets | C+SiC: | 5% |
product: | slide gate,upper nozzle,lower nozzle |
Packaging & Delivery
Packaging Details: | cartons,plastic film and pallets,wooden box,As requested. |
Delivery Detail: | within 30days after get your order |
Ladle nozzle brick,upper nozzle brick,lower nozzle brick
Product information:
1.Advantage:high refractoriness, good thermal shock resistance, erosion resistance and
scouring resistance, small hole diameter change, long service life, etc.
2.Product data:
Burnt Slide gate
Item B60,B50,C40type | Al-C Slide Gate | Al-Zr-C Slide Gate | ||||||
AlC-70 | AlC -75 | AlC -80 | AlC-85 | AlC -86 | AlZrC -70 | AlZrC-75 | AlZrC -77 | |
Al2O3,% | 70 | 75 | 80 | 85 | 86 | 70 | 75 | 77 |
C+SiC,% | 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 |
Unburned compound AlC Slide gate
Item B60,B50,C40type | Al-C Slide Gate | ||||
AlC-70A | AlC-75A | AlC-80A | AlC-85A | AlC-86A | |
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 |
zirconium core :
Item | ZN- 65 | ZN- 70 | ZN- 75 | ZN- 80 | ZN- 85 | ZN- 90 | ZN- 93A | ZN- 93B | ZN- 93C | ZN- 93D | ZN- 95A | ZN- 95B | ZN- 96 |
ZrO2(%) | ≥65 | ≥70 | ≥75 | ≥80 | ≥85 | ≥90 | ≥93 | ≥93 | ≥93 | ≥93 | ≥95 | ≥95 | ≥96 |
Bulk density (g/cm3) | ≥3.8 | ≥3.8 | ≥3.9 | ≥4.0 | ≥4.1 | ≥4.3 | ≥5.1 | ≥4.9 | ≥4.7 | ≥4.4 | ≥4.6 | ≥5.2 | ≥5.2 |
Apparent Porosity(%) | ≤23 | ≤22 | ≤22 | ≤20 | ≤20 | ≤20 | ≤13 | ≤15 | ≤18 | ≤20 | ≤20 | ≤9 | ≤5.6 |
Thermal shock resistance (cycles)(1100℃,water cooling) | >5 | >5 | >5 | >5 | >5 | >5 | >5 | >5 | >5 | >5 | >5 | >8 | >10 |
FAQ
We have organized several common questions for our clients，may help you sincerely：
①How about your company？
A world class manufacturer & supplier of castings forging in carbon steel and alloy steel，is one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirements.
②How to guarantee the quality of the products？
We have established the international advanced quality management system，every link from raw material to final product we have strict quality test；We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.
- Q: How are monolithic refractories installed and repaired in iron and steel plants?
- Monolithic refractories play a vital role in iron and steel plants, offering resistance to high temperatures and insulation. They are widely utilized in various applications, including lining furnaces, ladles, and equipment that comes into contact with molten metal. The process of installing monolithic refractories in iron and steel plants typically involves several sequential steps. Initially, the surface where the refractory material will be applied must be prepared, removing any existing refractories or contaminants. This can be accomplished through mechanical means, such as sandblasting, or through chemical cleaning processes. Following this, the monolithic refractory material is mixed with water or a suitable binder to achieve a workable consistency. The resulting mixture is then applied to the prepared surface using a variety of techniques, such as gunning, casting, or troweling. Gunning involves using a high-pressure gun to spray the refractory material onto the surface, while casting involves pouring the mixture into a mold. Troweling is a manual method that entails spreading the refractory material with a trowel. After the application of the refractory material, it must be appropriately cured or dried. This is usually accomplished by allowing the material to air dry or by employing controlled heating. The curing process is imperative to ensure that the refractory material develops the desired properties, including strength and resistance to thermal shock. Regarding repairs, monolithic refractories in iron and steel plants may deteriorate over time due to the harsh operating conditions. When repairs are necessary, damaged or worn-out sections of the refractory lining need to be identified. This can be achieved through visual inspection or non-destructive testing techniques. The repair procedure generally involves removing the damaged refractory material by chipping, drilling, or cutting. The surface is then prepared as previously mentioned, and a fresh batch of monolithic refractory material is applied to reinstate the lining. The repair material must be compatible with the existing lining and provide similar properties to ensure the overall integrity of the refractory structure. It is important to highlight that the installation and repair of monolithic refractories in iron and steel plants necessitate skilled personnel who possess knowledge of refractory materials and installation techniques. Additionally, proper safety precautions should be adhered to in order to safeguard workers from potential hazards, such as exposure to high temperatures, dust, and chemicals. Regular inspection and maintenance are also critical to identify any potential issues early on and prevent major failures that could affect production and safety.
- Q: What are the key differences between acidic and basic monolithic refractories?
- The key differences between acidic and basic monolithic refractories lie in their chemical composition and the type of environments they can withstand. Acidic refractories are made of silica or alumina and can withstand acidic environments, such as those containing sulfur or phosphorus. On the other hand, basic refractories are made of magnesia or dolomite and are resistant to basic environments, such as those containing calcium oxide or alkalis. Additionally, acidic refractories have higher thermal shock resistance, while basic refractories have higher resistance to chemical attack.
- Q: What are the specific requirements of monolithic refractories for blast furnace applications?
- Monolithic refractories used in blast furnace applications must possess specific attributes to withstand the extreme conditions within the furnace. These requirements include high thermal conductivity, excellent thermal shock resistance, superior erosion and abrasion resistance, and good chemical resistance to withstand the corrosive nature of molten iron and slag. Additionally, they should have low porosity to prevent the penetration of molten metal, high mechanical strength to withstand the weight of the burden, and good dimensional stability to maintain their shape and integrity during operation.
- Q: What are the typical applications of monolithic refractories in the iron and steel industry?
- Monolithic refractories find several typical applications in the iron and steel industry. These include lining electric arc furnaces, ladles, tundishes, and various other equipment used in the production of iron and steel. Monolithic refractories are also commonly used for repairing and maintaining the linings of these equipment. Their high thermal conductivity, excellent resistance to thermal shock, and ability to withstand extreme temperatures make them ideal for these applications in the iron and steel industry.
- Q: How do monolithic refractories improve the efficiency of ladle and tundish preheaters?
- Monolithic refractories play a crucial role in improving the efficiency of ladle and tundish preheaters through several key mechanisms. Firstly, monolithic refractories provide excellent thermal insulation properties. They have low thermal conductivity, which means they are effective in preventing heat loss from the preheaters. By minimizing heat loss, monolithic refractories ensure that the majority of the heat generated by the preheater is utilized for preheating the ladle or tundish. This results in reduced energy consumption and improved efficiency of the preheating process. Secondly, monolithic refractories offer high thermal shock resistance. Ladle and tundish preheaters are subjected to rapid and extreme temperature changes during operation. The ability of monolithic refractories to withstand these thermal shocks ensures their long-lasting performance, minimizing the need for frequent repairs or replacements. This not only enhances the efficiency of the preheaters but also reduces downtime and maintenance costs. Furthermore, monolithic refractories exhibit excellent mechanical strength and abrasion resistance. The ladle and tundish preheaters experience constant wear and tear due to the movement of ladles or tundishes, and the abrasive nature of the materials being processed. The use of monolithic refractories prevents erosion and damage to the preheaters, ensuring their longevity and optimal functioning. This, in turn, improves the overall efficiency of ladle and tundish preheaters by reducing downtime and maintenance requirements. Lastly, monolithic refractories offer design flexibility. They can be customized and shaped according to the specific requirements of the ladle or tundish preheaters. This allows for better fitting and insulation, maximizing heat transfer efficiency. The ability to tailor the refractory lining to the preheater's design also ensures uniform heating, minimizing temperature variations and improving overall operational efficiency. In summary, the use of monolithic refractories in ladle and tundish preheaters improves efficiency by providing superior thermal insulation, thermal shock resistance, mechanical strength, abrasion resistance, and design flexibility. These properties result in reduced heat loss, minimized downtime, enhanced durability, and optimized heat transfer, ultimately leading to improved efficiency of the preheating process.
- Q: What are the limitations of monolithic refractories in high-temperature applications?
- Monolithic refractories have certain limitations when used in high-temperature applications. One major limitation is their susceptibility to thermal shock. Monolithic refractories lack the structural stability and resistance to sudden temperature changes compared to other refractory materials. Additionally, their relatively low thermal conductivity can lead to uneven heat distribution and potential hotspots, affecting the overall performance and longevity of the refractory lining. Another limitation is their susceptibility to chemical attack by certain aggressive environments, which can lead to accelerated deterioration and reduced lifespan. Overall, while monolithic refractories offer certain advantages in terms of installation flexibility and ease of maintenance, their limitations in terms of thermal shock resistance, thermal conductivity, and chemical resistance must be considered in high-temperature applications.
- Q: What are the recommended curing and drying procedures for monolithic refractories?
- The recommended curing and drying procedures for monolithic refractories depend on the specific type and composition of the refractory material. However, there are some general guidelines that can be followed. Curing refers to the process of allowing the refractory material to set and harden. This is typically done by exposing the material to a controlled temperature and humidity environment. The curing process helps to develop the desired physical and chemical properties of the refractory, such as strength and resistance to thermal shock. Drying, on the other hand, refers to the removal of moisture from the refractory material. This is important because moisture can cause the refractory to crack or spall when exposed to high temperatures. Drying is typically done after the curing process. The curing and drying procedures for monolithic refractories often involve the following steps: 1. Preheating: Before applying the refractory material, it is important to preheat the surface to which it will be applied. This helps to prevent rapid moisture evaporation and ensures good adhesion of the refractory. 2. Mixing and application: The refractory material should be mixed according to the manufacturer's instructions and applied to the desired surface using appropriate techniques such as gunning, casting, or ramming. 3. Initial curing: After application, the refractory should be allowed to cure at a controlled temperature and humidity for a specific duration. This allows the material to set and develop its strength. The curing temperature and duration may vary depending on the specific refractory material, but it is typically recommended to start with a lower temperature and gradually increase it over time. 4. Drying: Once the initial curing is complete, the refractory should be dried to remove any remaining moisture. This is typically done by gradually increasing the temperature in a controlled manner. The drying temperature and duration may vary depending on the specific refractory material, but it is important to avoid rapid temperature changes to prevent thermal stress and cracking. 5. Final curing: After drying, the refractory should be allowed to cool down gradually to room temperature. This final curing step helps to further develop the refractory's strength and stability. It is crucial to follow the manufacturer's guidelines and recommendations for the specific refractory material being used, as different materials may have different curing and drying requirements. Additionally, factors such as the size and shape of the refractory installation, as well as the surrounding environment, may also influence the curing and drying procedures. Consulting with a refractory specialist or manufacturer is always recommended to ensure the proper curing and drying procedures are followed for optimal performance and longevity of the monolithic refractories.
- Q: How do monolithic refractories withstand thermal shock?
- Monolithic refractories are able to withstand thermal shock due to their unique properties and composition. Thermal shock occurs when there is a rapid change in temperature, causing stress and potential damage to the refractory material. However, monolithic refractories are designed to have high thermal shock resistance, and this is achieved through several mechanisms. Firstly, the composition of monolithic refractories includes materials with low thermal expansion coefficients. This means that they have a minimal change in size or volume when exposed to different temperatures. This property allows the refractory material to withstand thermal shock by minimizing the stress caused by temperature fluctuations. Secondly, monolithic refractories have excellent thermal conductivity. This property allows them to efficiently transfer heat away from the hot areas, preventing localized overheating and reducing the risk of thermal shock. The rapid dissipation of heat helps to maintain a more uniform temperature distribution within the refractory material, thus reducing the chances of cracking or spalling. Additionally, the binding agents used in monolithic refractories play a crucial role in their thermal shock resistance. These binders provide strength to the refractory material and help to maintain its integrity during thermal cycling. The binders also contribute to the refractory's resistance to thermal shock by reducing the permeability of the material, preventing the penetration of hot gases or liquids that could cause damage. Moreover, the installation technique of monolithic refractories is an important factor in their ability to withstand thermal shock. Monolithic refractories are typically applied as a single, continuous layer, eliminating the joints and seams that can be weak points in other refractory systems. This seamless installation method ensures better thermal shock resistance as there are no weak points for cracks to propagate. In summary, monolithic refractories withstand thermal shock through a combination of factors including their low thermal expansion coefficients, high thermal conductivity, suitable binding agents, and seamless installation techniques. These properties and design considerations allow monolithic refractories to effectively handle rapid changes in temperature and maintain their structural integrity, making them ideal for applications that involve thermal cycling and extreme temperature variations.
- Q: What are the advantages of using monolithic refractories in electric arc furnaces?
- There are several advantages to using monolithic refractories in electric arc furnaces. Firstly, monolithic refractories offer excellent thermal shock resistance. Electric arc furnaces operate at extremely high temperatures, and the refractory lining is constantly exposed to rapid temperature changes. Monolithic refractories are able to withstand this thermal cycling without cracking or deteriorating, ensuring the longevity and efficiency of the furnace. Secondly, monolithic refractories have superior corrosion resistance. Electric arc furnaces often use aggressive slag compositions, which can corrode and erode traditional brick linings. Monolithic refractories, on the other hand, are specifically designed to resist chemical attack, providing long-lasting protection against the corrosive effects of molten metal and slag. Additionally, monolithic refractories offer great flexibility in terms of installation. Unlike brick linings, which require extensive labor and time to construct, monolithic refractories can be easily applied as a liquid or paste, allowing for faster and more efficient installation. This not only reduces downtime during furnace maintenance or repairs but also provides the opportunity for customized linings to be easily created to suit specific furnace designs. Moreover, monolithic refractories have excellent thermal conductivity. This property allows for efficient heat transfer within the electric arc furnace, ensuring optimal energy use and minimizing heat losses. This improved thermal efficiency results in reduced operating costs and increased productivity. Furthermore, monolithic refractories have a high refractoriness, meaning they can withstand extremely high temperatures without deformation or failure. This is crucial for electric arc furnaces, which operate at temperatures exceeding 3000°C. The ability of monolithic refractories to maintain their structural integrity at such extreme temperatures ensures the safe and efficient operation of the furnace. In conclusion, the advantages of using monolithic refractories in electric arc furnaces include their thermal shock resistance, corrosion resistance, ease of installation, high thermal conductivity, and exceptional refractoriness. These properties contribute to improved furnace performance, increased productivity, reduced operating costs, and extended furnace life.
- Q: How are monolithic refractories different from traditional refractory materials?
- There are several ways in which monolithic refractories differ from traditional refractory materials. Firstly, while traditional refractory materials are typically made from bricks, blocks, or tiles, monolithic refractories are made from a single continuous material. This means that they do not have any joints or seams, which can weaken traditional refractory structures. Secondly, installing monolithic refractories is much easier compared to traditional refractory materials. They can be easily shaped and applied on site, allowing for greater flexibility in design and construction. In contrast, traditional refractory materials require skilled labor and more time-consuming installation methods such as bricklaying. Additionally, monolithic refractories offer improved resistance to thermal shock. Because of their continuous structure, they can better withstand sudden changes in temperature without cracking or spalling. On the other hand, traditional refractory materials may be more susceptible to thermal shock damage. Another advantage of monolithic refractories is their ability to provide better insulation. They are often composed of lightweight aggregates or insulating fibers, which help to reduce heat loss and improve energy efficiency. Traditional refractory materials, while still capable of providing insulation, may not offer the same level of thermal efficiency. Lastly, monolithic refractories are more cost-effective. Their ease of installation, reduced labor requirements, and improved thermal performance contribute to lower overall project costs compared to traditional refractory materials. To sum up, monolithic refractories have a continuous structure, are easy to install, offer improved thermal shock resistance, provide better insulation properties, and are cost-effective. These characteristics make them the preferred choice in many industries that require high-temperature applications and thermal insulation.
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Monolithic Refractories Zirconia Slide Gate Nozzle Upper and Lower Nozzle Brick for Iron and Steel Industry
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 100000 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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