SK-34 Insulating Fire Brick

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Payment Terms:: TT OR LC

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Specifications

Fire brick
1.ISO 9001 approved,
2.With high quality and competitive price,
3.Standard and special shape.

Fire-clay refractory brick.
1. N-1
AL2O3 (%)>42
Refractoriness >1750
Refractoriness under load KD>1400
Permanent linear change onreheating
1500*2h
1450*2h
1400*2h:+0.1; -0.4
Apparent Porosity(%)<22
Cold crushing strength (Mpa)>29.4

2. N-2a
AL2O3 (%)>40
Refractoriness >1730
Refractoriness under load KD>1350
Permanent linear change onreheating
1500*2h
1450*2h
1400*2h:+0.1; -0.5
Apparent Porosity(%)<24
Cold crushing strength (Mpa)>24.5

High-alumina refractory brick
1. LZ-75
AL2O3 (%)>75
Refractoriness>1790
Refractoriness under load KD>1520
Permanent linear change onreheating
1500*2h:+0.1; -0.4
1450*2h
1400*2h
Apparent Porosity(%)<23
Cold crushing strength (Mpa)>53.9

2. LZ-65
AL2O3 (%)>65
Refractoriness >1790
Refractoriness under load KD>1500
Permanent linear change onreheating
1500*2h:+0.1; -0.4
1450*2h
1400*2h
Apparent Porosity(%)<23
Cold crushing strength (Mpa)>49

3.LZ-55
AL2O3 (%)>55
Refractoriness >1770
Refractoriness under load KD>1470
Permanent linear change onreheating
1500*2h:+0.1; -0.4
1450*2h
1400*2h
Apparent Porosity(%)<22
Cold crushing strength (Mpa)>44.1

4.LZ-48
AL2O3 (%)>48
Refractoriness >1750
Refractoriness under load KD>1420
Permanent linear change onreheating
1500*2h
1450*2h:+0.1; -0.4
1400*2h
Apparent Porosity(%)<22
Cold crushing strength (Mpa)>39.2

Fire clay brick SK-32
Item	Standard
AI2O3(%)	30
Fe2O3 (%)	3.5
Refractoriness (SK)	32
Refractoriness under load, 0.2MPa, Ta, (°C)	1300
Porosity (%)	22-26
Bulk density (g/cm³)	2.05
Cold crushing strength (MPa)	25
Thermal expansion at 1000°C (%)	0.6

Fire clay brick SK-34
Item	Standard
AI2O3(%)	38
Fe2O3 (%)	2.5
Refractoriness (SK)	34
Refractoriness under load, 0.2MPa, Ta, (°C)	1350
Porosity (%)	19-23
Bulk density (g/cm³)	2.10-2.15
Cold crushing strength (MPa)	25
Thermal expansion at 1000°C (%)	0.6

Fire clay brick SK-36
Item	Standard
AI2O3(%)	50
Fe2O3 (%)	2
Refractoriness (SK)	36
Refractoriness under load, 0.2MPa, Ta, (°C)	1450
Porosity (%)	20-24
Bulk density (g/cm³)	2.30-2.40
Cold crushing strength (MPa)	45
Thermal expansion at 1000°C (%)	0.3

$SK-34 refractory brick$

Q: Are insulating fire bricks resistant to nitrogen oxides?: Insulating fire bricks are known for their excellent thermal insulation properties and are commonly used in high-temperature applications such as furnaces, kilns, and industrial boilers. While they are highly resistant to heat and can withstand extreme temperatures, their resistance to nitrogen oxides (NOx) may vary depending on the specific composition and manufacturing process of the bricks. Nitrogen oxides are a group of harmful gases that are produced during combustion processes, particularly at high temperatures. These gases can have detrimental effects on human health and the environment. Although insulating fire bricks have a high melting point and can withstand intense heat, they may not provide sufficient resistance to nitrogen oxides on their own. To enhance the resistance of insulating fire bricks to nitrogen oxides, additional measures and coatings may be required. These could include the use of specialized refractory coatings or the incorporation of specific additives during the manufacturing process to create a more chemically resistant brick. It is important to note that the resistance of insulating fire bricks to nitrogen oxides may also depend on the specific application and operating conditions. Different types of nitrogen oxides, such as nitrogen dioxide (NO2) or nitric oxide (NO), may have different effects on the bricks. Therefore, it is recommended to consult the manufacturer or a specialist in refractory materials to determine the suitability of insulating fire bricks in a specific environment where the presence of nitrogen oxides is a concern.

Q: Can insulating fire bricks be used for insulation in cement kilns?: Insulation in cement kilns can be achieved by using insulating fire bricks. These bricks are made from lightweight materials like ceramic fibers or expanded clay, which possess high insulation properties. Their low thermal conductivity allows them to effectively reduce heat transfer and retain heat within the kiln. Cement kilns operate at extremely high temperatures, often surpassing 1,400 degrees Celsius (2,500 degrees Fahrenheit). Incorporating insulating fire bricks in the kiln helps prevent heat loss, enhances energy efficiency, and reduces fuel consumption. By creating a barrier between the hot gases inside the kiln and the surrounding environment, these bricks minimize heat escape. Additionally, insulating fire bricks exhibit remarkable resistance to thermal shocks, enabling them to withstand the severe temperature fluctuations that occur in cement kilns. This durability ensures long-lasting insulation, minimizing the need for frequent maintenance and replacement. Nevertheless, it is crucial to note that the specific type and composition of insulating fire bricks required for cement kiln insulation may vary depending on factors such as the kiln's design and operating conditions. Consulting with experts or manufacturers specializing in refractory materials is advisable to ensure the correct selection and installation of insulating fire bricks for cement kiln insulation.

Q: Are insulating fire bricks resistant to thermal expansion or contraction?: Yes, insulating fire bricks are resistant to thermal expansion and contraction. These bricks are made of materials that have low thermal conductivity, allowing them to withstand high temperatures without undergoing significant expansion or contraction. This property makes them ideal for applications where thermal stability and insulation are required, such as in kilns, furnaces, and other high-temperature environments.

Q: What is the difference between insulating fire bricks and regular fire bricks?: Insulating fire bricks are designed to have lower thermal conductivity, allowing them to retain heat more effectively and prevent heat loss. Regular fire bricks, on the other hand, have higher thermal conductivity as they are primarily used for structural purposes and to withstand high temperatures.

Q: Are insulating fire bricks suitable for use in steel manufacturing plants?: Yes, insulating fire bricks are suitable for use in steel manufacturing plants. Insulating fire bricks have excellent thermal properties, including high heat resistance and low thermal conductivity, which make them ideal for use in high-temperature environments such as steel manufacturing plants. These bricks can withstand the extreme heat generated during steel production processes, such as melting, casting, and forging. Additionally, insulating fire bricks help to conserve energy by reducing heat loss, thus improving the overall efficiency of the plant. They also have good mechanical strength and can withstand the physical stresses and strains associated with steel manufacturing operations. Overall, the use of insulating fire bricks in steel manufacturing plants can help to enhance safety, increase productivity, and improve energy efficiency.

Q: Can insulating fire bricks be used in the construction of coke ovens?: Yes, insulating fire bricks can be used in the construction of coke ovens. Insulating fire bricks are specially designed to withstand high temperatures and provide excellent thermal insulation. Coke ovens operate at extremely high temperatures, typically around 2000 degrees Fahrenheit, and require materials that can withstand these conditions. Insulating fire bricks have low thermal conductivity, which means they can effectively prevent heat transfer between the oven's interior and exterior. This helps to maintain the high temperatures required for the carbonization of coal in the coke oven, while also minimizing heat loss. Furthermore, insulating fire bricks are lightweight and have high strength, making them ideal for use in the construction of coke ovens. Their lightweight nature allows for easier installation and reduces the overall weight of the structure. Their high strength ensures that they can withstand the harsh operating conditions of the coke oven without cracking or crumbling. In summary, insulating fire bricks are a suitable choice for the construction of coke ovens due to their ability to withstand high temperatures, provide thermal insulation, and offer durability.

Q: Can insulating fire bricks be used in ladles?: Yes, insulating fire bricks can be used in ladles. Insulating fire bricks are designed to withstand high temperatures and provide thermal insulation. They are commonly used in applications where there is a need to maintain or control high temperatures, such as in furnaces, kilns, and ladles. Ladles are used for pouring and transferring molten metal or other materials, and the use of insulating fire bricks in ladles helps to minimize heat loss and improve energy efficiency. Additionally, insulating fire bricks can also provide a protective barrier against chemical reactions and erosion caused by the molten materials, making them suitable for ladle applications.

Q: Can insulating fire bricks be used in biomass boilers?: Yes, insulating fire bricks can be used in biomass boilers. Insulating fire bricks are designed to have low thermal conductivity, which helps to retain heat within the boiler and increase its overall efficiency. In biomass boilers, these bricks can be used to line the combustion chamber, helping to keep the heat inside and prevent it from escaping. Additionally, insulating fire bricks can withstand high temperatures, making them suitable for use in biomass boilers where combustion temperatures can reach several hundred degrees Celsius. Overall, the use of insulating fire bricks in biomass boilers can enhance their thermal efficiency and contribute to a more efficient and sustainable energy production process.

Q: Can insulating fire bricks be used in the construction of regenerators?: Insulating fire bricks are indeed suitable for the construction of regenerators, which are commonly used in various industrial processes like glass manufacturing and metallurgy to recover and reuse waste heat. These bricks are specifically designed to possess low thermal conductivity, making them an ideal option for insulation purposes. By incorporating insulating fire bricks into regenerator construction, heat loss can be minimized, resulting in more efficient heat recovery and energy conservation. Furthermore, these bricks are capable of withstanding high temperatures, rendering them suitable for the typically harsh operating conditions in regenerators. All in all, insulating fire bricks prove to be a reliable and efficient choice for regenerator construction.

Q: Can insulating fire bricks be used in the construction of heat storage systems?: Insulating fire bricks have the potential to be utilized in the construction of heat storage systems. These bricks are specifically designed to possess low thermal conductivity, enabling them to effectively trap and retain heat. They are typically composed of materials such as fire clay, which possess exceptional insulation properties. By incorporating insulating fire bricks, it becomes feasible to minimize heat loss, thereby facilitating efficient heat storage and retention within the system. These bricks can be employed to construct the walls and lining of the heat storage system, ensuring that the stored heat does not dissipate into the surroundings. Furthermore, insulating fire bricks are lightweight and easily manageable, rendering them a convenient option for the construction of heat storage systems. Ultimately, the utilization of insulating fire bricks significantly enhances the thermal efficiency of heat storage systems, consequently contributing to more effective heat management.

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