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Refractory bricks are also called fire bricks. They are a kind of shaped refractory material that is indispensable in high-temperature environments. They have the characteristics of high-temperature resistance, creep resistance, earthquake resistance, and corrosion resistance. They can resist high-temperature erosion and medium corrosion, so they are often used for the lining of high-temperature equipment and furnaces, such as aluminum melting furnaces, blast furnaces, trolley furnaces, glass kilns, etc. They are widely used in metallurgy, construction, chemical industry, power, and other industries. The reason why refractory bricks are also called fire bricks is because they have very high refractoriness. The refractory temperature of some common refractory bricks can reach 1790℃, and the refractory temperature of some high-quality refractory bricks can even reach about 2000℃, such magnesium bricks and corundum bricks. It is precisely because of its excellent refractory temperature that it is widely used in high-temperature industries to ensure the stability of the working environment of smelting furnaces in high-temperature industries and to provide stable assistance for the development of high-temperature industries. At the same time, its development is also the key to restricting the development of high-temperature industries. The higher the refractory temperature, the higher the melting point of high-temperature...
Phosphate refractory bricks are a type of refractory material, mainly composed of phosphate compounds and high-temperature resistant materials. They are widely used in some high-temperature and acid-base corrosive occasions. At present, phosphate refractory bricks mainly include phosphate-bonded high-alumina bricks and phosphate-bonded high-alumina wear-resistant bricks. The phosphoric acid solution in the manufacturing process is about 42.5%-50%, and the alumina content of phosphate refractory bricks is generally 75%-77%. It has excellent high-temperature resistance and corrosion resistance. The refractory temperature of phosphate refractory bricks can generally reach 1250℃-1350℃, which can withstand the high-temperature environment in the kiln. At the same time, it also has very good corrosion resistance, so it is often used in some environments with corrosive media to ensure the stability and service life of the kiln. Not only that, phosphate-bonded high-alumina refractory bricks show good thermal shock resistance. This means that they can withstand rapid temperature changes without cracking or peeling. This feature is essential for applications with frequent thermal cycles (such as furnaces or kilns). Not only that, it also has good wear resistance and can withstand abrasive forces and mechanical wear, which makes it very suitable for applications where bricks face high wear. Since phosphate refractory bricks improve...
T38 refractory brick is a common refractory brick size, which is often mentioned by people. It is also called knife-shaped brick or big knife brick. T38 represents the size of refractory brick, which is 230*114*65/55 (mm). This brick is thick on the top and thin on the bottom like T20 refractory brick. It looks like a knife from the side, so it is called a knife-shaped brick. It is often used for the masonry of the arched part of the kiln. The reason why T38 refractory brick is designed to be thick on the top and thin on the bottom is mainly to meet the needs of arc-shaped kiln masonry. This can meet the diversity of kiln shapes. After masonry, the refractory bricks can be more closely laid, making the kiln more closed and effectively resisting high-temperature erosion and pressure. It is usually used in combination with T20 refractory bricks to make the masonry of arc-shaped or circular kiln parts more convenient. At present, the materials of T38 refractory bricks mainly include high alumina, clay, magnesium, silicon carbide, corundum, and other materials. Reasonable selection should be made according to the actual situation of the kiln, such as the operating temperature...
Refractory brick T20 is a refractory brick of a specific specification, where T20 represents the brick number of the refractory brick, also known as knife-shaped brick or small knife edge. Its size is 230*114*65/45 (mm). The shape of this brick is characterized by its thickness, which is wide at the upper end and narrow at the lower end. It is often used for the masonry of the arched part of the kiln. The size of T20 refractory bricks is generally carefully designed so that when the kiln is built, it can meet the masonry of arched or circular parts, such as chimneys, craters, etc. The reason for designing such a size is that in addition to making the construction simple, it can also make the refractory bricks fit more closely, forming a solid structure, and effectively resisting high-temperature erosion and pressure. This is also the refractory brick model we commonly use in masonry arched parts. At present, the materials of T20 refractory bricks mainly include high alumina, clay, corundum, etc. They can also be made into carbon-containing refractory bricks, zirconium-containing refractory bricks, and other different materials to meet the use requirements of different industrial kilns. In the selection process, we...
Secondary high alumina is a refractory brick with an alumina content of about 65%. The weight of a single brick is generally around 3.9-4.1kg, its volume density is 2.4g/cm3, and the refractory temperature is generally 1770℃. What is the price of such a refractory brick? For a standard secondary high alumina brick with a size of 230*114*65mm, the price is generally RMB 10-15 per piece. Of course, the specific price also depends on many factors, including size, alumina content, brand, and quality. Size and alumina content are one of the main factors affecting secondary high alumina bricks. There are many types of secondary high-alumina bricks, such as large blade, small blade, two-piece, four-piece, etc. According to the different sizes, they are divided into different types of secondary high-alumina bricks, so their prices also vary according to the size and alumina content. For example, the price of a smaller two-piece is generally around RMB 7-8 per piece, while the price of a larger T56 secondary high-alumina brick may reach RMB 30-40 per piece, so when we buy, we must determine the size and alumina content of the refractory bricks. In addition to size and alumina content, brand and quality are also...
Refractory castables are a kind of high-temperature refractory materials, which are usually used for the lining construction of various high-temperature industrial kilns. They are widely used in the kiln production of metallurgy, steel, glass, cement, chemical industry, and other industries. So what are the general uses of refractory castables in these industries? In the metallurgical industry, refractory castables are often used for the lining masonry of high-temperature kilns such as aluminum melting furnaces, combustion furnaces, electric furnaces, and self-heating roads. They are usually used for the masonry of furnace bottoms, furnace walls, and other parts to resist the erosion of high temperatures to kilns. In the steel industry, refractory castables are often used for the lining masonry of high-temperature kilns such as blast furnaces, heating furnaces, coke ovens, and converters to resist the erosion of high-temperature molten steel, molten iron, and other high-temperature molten liquids. In the glass industry, refractory castables are often used for the lining of melting furnaces and the clarification and homogenization parts of glass liquid. They can withstand the erosion of high temperatures and glass liquid to ensure the quality of glass liquid and more uniform melting. In the cement industry, refractory castables are often used...
Refractory plastic and refractory castable are two different refractory materials. There are great differences between them, not only in their composition but also in their construction methods. Next, I will show you the difference between wear-resistant plastic and refractory castable. 1. Composition Wear-resistant refractory plastic is a refractory material that is made of refractory aggregate and powder, raw clay, chemical compound, and admixture, and is mixed and extruded into a brick shape, and still has good plasticity after being packaged and stored for a certain period. Refractory castable is composed of refractory aggregate, powder, binder, and other materials. It is made into refractory material through mixing, molding, hardening, and other processes, and the whole is in powder form. 2. Construction method Wear-resistant plastics are usually constructed by ramming, vibration, and other methods. They are suitable for construction all year round. No maintenance is required after construction. The temperature can be raised immediately. The furnace heating rate is 50℃/h. Generally, the furnace temperature required for production operation can be reached in 24 hours. Refractory castables are suitable for construction by pouring and vibration methods and are mostly used to construct industrial furnace linings. After construction, it is necessary to wait for...
Refractory balls are mainly used in the heat storage chamber of high-temperature kilns to store and release heat in the heat storage chamber to improve the production efficiency of high-temperature kilns. There are many types of refractory bricks to meet various specific application requirements. So what types of refractory balls are there? At present, the types of refractory balls mainly include refractory balls made of high alumina, corundum, mullite, silica, magnesium, and other materials. Among them, high alumina and corundum are the most widely used refractory balls, and high alumina refractory balls are divided into many types according to different alumina. In addition to the different materials, refractory balls are also divided into different diameters, sizes, contents, etc., so when choosing, you should choose according to the specific situation. At present, the common refractory ball size range is about 15-60mm, and the content is generally selected according to the specific use environment. In addition to the common refractory balls such as high alumina and corundum, there are also refractory balls made of silicon, magnesium, chromium, zirconium, and other materials. These refractory balls are generally more stable in high-temperature environments. In addition to stable thermal shock resistance in special environments, they...
Refractory bricks 230*114*65 generally refer to standard refractory bricks, whose brick number is T3. It is a very common refractory brick currently used. Its price must be what many customers want to know. However, the price of refractory bricks is affected by many factors, including brand, material, specification, production process, and market supply and demand. At present, the main factor limiting the price of refractory bricks still depends on their material. Different materials have different prices. At present, the materials of refractory bricks include high-aluminum, clay, corundum, carbon-containing refractory bricks, zirconium-containing refractory bricks, magnesium-containing refractory bricks, etc. The prices vary according to the materials. Generally speaking, the prices of corundum, zirconium, carbon, and magnesium-containing refractory bricks are more expensive, and the prices of high-aluminum and clay refractory bricks are slightly cheaper. When the size is the same as 230*114*65, the price of high-aluminum refractory bricks is 10-18 yuan per piece, and the price of clay refractory bricks is about 3-8 yuan per piece. The prices of corundum, carbon, zirconium, and magnesium refractory bricks are generally more than ten yuan per piece, and some can even reach about one hundred yuan per piece. Therefore, the price of refractory bricks varies according...
Low cement silicon carbide castable is a high-performance refractory material widely used in various high-temperature industrial furnaces. Its main features and applications are as follows: I. Features 1. Low linear expansion coefficient: The main component of low cement silicon carbide castable is silicon carbide, which has a low linear expansion coefficient. This feature reduces the possibility of thermal stress in high-temperature environments, thereby improving the stability and service life of the equipment. 2. High thermal conductivity: Silicon carbide, as an excellent thermal conductive material, makes low cement silicon carbide castable have good thermal conductivity. This helps to quickly transfer and evenly distribute heat in the furnace, and improve the thermal efficiency of furnace equipment. 3. High strength: Through the use of a low cement ratio and reasonable binder, low cement silicon carbide castable has high strength and durability. It has strong compressive and flexural resistance and can withstand the influence of complex environments in the furnace. 4. Good wear resistance: Due to the high hardness of silicon carbide, low cement silicon carbide castable has excellent wear resistance. This enables it to maintain a long service life in an environment with severe wear. 5. Good chemical stability: Low cement silicon carbide...
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