Web Menu

Product Search

Language

Share

News

Home / News

  • A strong shield in chemical environments: the way to stabilize insulating refractory bricks

    Insulating Refractory Bricks have high stability in various chemical environments. This feature is particularly important in industrial applications. Its stability is mainly reflected in the following aspects:Acid and alkali resistance: Insulating refractory bricks are often composed of oxides, silicates and other compounds. These materials usually show good acid and alkali resistance. In chemical industry production, such as acid making, alkali making, etc., a large amount of acidic or alkaline waste liquid will be produced. These media are corrosive to many metal and non-metallic materials, but insulating refractory bricks can effectively resist this Corrosion, protecting the integrity and functionality of industrial equipment.Corrosion resistance: Insulating refractory bricks can maintain the stability of their structure under the dual effects of high temperature and chemical media. In the production of metallurgy, chemical industry and other fields, equipment is often corroded by high temperature, acidic, alkaline, and oxidizing media. However, insulating refractory bricks can effectively resist these erosions due to their special material composition and structural design. Ensure the stable operation of the equipment for a long time.Stable chemical structure: Insulating refractory bricks can maintain the stability of their chemical structure in high temperature environments and are not easily affected by chemical substances. This characteristic allows the insulating refractory bricks to withstand high temperatures and chemical erosion for a long time without obvious quality changes, ensuring the safe operation of the equipment.Oxidation resistance: Insulating refractory bricks have high oxidation resistance and can resist the erosion of oxidizing media. In high-temperature environments, many metal and non-metal materials are prone to oxidation reactions, and insulating refractory bricks can stably maintain the chemical state of their materials, effectively extending the service life of the equipment.Insulating refractory bricks have high stability in various chemical environments, which makes them an indispensable key material in industrial production. Its excellent chemical stability provides reliable protection for industrial equipment, prolongs the service life of equipment, reduces maintenance costs, thereby promoting safe and stable industrial production.Light Brick and Insulating Brick with High Strength and Low Heat ConductionApplication: For thermal insulation of various industry furnaces, such as the wall of ceramic tunnel kilns and insulation material of blast stoves.Property: Adopt high-quality raw materials and specific techniques; high compressive strength, uniform structure, light heavy, low price, and obvious energy conservation effect.

    Read More

  • The key role of insulating materials: ensuring safe operation of circuits

    In modern electrical engineering, the importance of insulating materials cannot be ignored. They are a key component in protecting circuits from risks such as current leakage and short circuits. Insulating materials effectively prevent the flow of electric current through a series of characteristics and performance, thereby ensuring the safe operation of circuits.1. High resistance performanceInsulating materials often have extremely high resistivities, which means they barely conduct electricity in an electric field. This high resistance enables the insulating material to effectively block the flow of electrical current, thereby preventing unintended current paths in the circuit, such as leakage or short circuits. This property is particularly important because the insulating material maintains its insulating properties even at high voltages, ensuring that the circuit will not malfunction or be damaged by the flow of electrical current.2. Excellent dielectric propertiesInsulating materials are often used as dielectrics, that is, they are stable in an electric field without breakdown. This property allows insulating materials to isolate electrical current in electrical equipment and prevent circuit shorts between different parts of the circuit. By providing a reliable electrical isolation layer, insulating materials effectively prevent current mixing and crossover in the circuit, thereby ensuring circuit stability and safety.3. Heat resistance and corrosion resistanceSince electrical equipment is often exposed to high temperatures or harsh working environments, insulation materials need to have good heat resistance and corrosion resistance. These characteristics ensure that the insulation material can still maintain its insulation performance under extreme conditions and will not fail due to temperature rise or chemical corrosion. The heat resistance and corrosion resistance of insulating materials enable electrical equipment to operate stably for a long time in harsh environments, thereby extending the service life of the equipment and improving its reliability.4. Mechanical strengthIn addition to electrical properties, insulating materials also need to have a certain mechanical strength to withstand mechanical damage from the external environment. During the manufacturing and installation process of electrical equipment, insulation materials may be physically impacted or squeezed, so they need to have a certain degree of compressive and tensile strength. This mechanical strength ensures that the insulating material is not easily damaged during use, thus ensuring the safe operation of the circuit.Insulating materials ensure the safe operation of circuits through their properties such as high electrical resistance, dielectric properties, heat and corrosion resistance, and mechanical strength. They not only prevent the flow of current, but also effectively isolate the electrical connections between different parts, preventing circuit short circuits and current leakage from occurring. Therefore, insulation materials play an indispensable role in electrical engineering, providing key guarantees for the reliability and safety of electrical equipment.Ceramic Fiber And Products The main material of ceramic fiber products is ceramic fiber, and such products are manufactured by wet process and dry-press process. With a uniform thickness, smooth surface, and great flexibility to be further cut or punched into a variety of products of varying dimensions, the 1600-type product uses a combination of polycrystalline mullite fibers and can be directly exposed to fire.

    Read More

  • Monolithic Refractories in the metallurgical industry: an important role in protecting high-temperature equipment

    In the metallurgical industry, the use of Monolithic Refractories plays an indispensable role in the lining and masonry of equipment such as steelmaking furnaces, electric furnaces and converters. These equipment are subjected to extreme conditions such as high temperatures, chemical corrosion and mechanical action, thus placing stringent requirements on the performance of refractory materials.The steelmaking furnace is the key equipment for smelting and refining pig iron or scrap steel into various steel products. Inside the steelmaking furnace, high-temperature molten metal and slag will cause severe erosion and corrosion of the lining materials. Therefore, it is necessary to use amorphous refractory materials with excellent fire resistance and corrosion resistance for lining and masonry. These materials usually need to have high refractory acid resistance, excellent high temperature resistance and slag resistance to ensure that they can maintain structural stability and durability at high temperatures.Electric furnace is one of the commonly used smelting equipment in the metallurgical industry. It uses electric energy to heat scrap steel or other metal materials to a high temperature for smelting. Inside the electric furnace, due to high temperature and chemical reactions, a large amount of gas and slag will be produced, causing serious erosion of the lining material. Therefore, choosing amorphous refractory materials with excellent fire resistance for the lining and masonry of electric furnaces can extend the service life of the equipment and improve production efficiency.The converter is an important equipment used in the smelting and refining process. During the working process of the converter, high-temperature metal liquid and slag will cause serious erosion of the inner wall of the converter. Therefore, it is necessary to choose amorphous refractory materials with good fire resistance and corrosion resistance. Lining and masonry. These materials usually need to have high-temperature strength, thermal shock resistance and chemical stability to ensure the normal operation and long-term stability of the converter.Monomorphous refractory materials play an important role in equipment such as steel-making furnaces, electric furnaces and converters in the metallurgical industry. Choosing the Monolithic Refractories can not only protect the inner wall of the equipment from high temperature and corrosion, extend the service life of the equipment, but also improve production efficiency and contribute to the development of the metallurgical industry.High-temperature Mortar, High-temperature BinderHigh bonding strength of binder, strong binding force under high temperature, and no pollution to the environment, great integrity of the lining for the high-temperature plaster masonry, and strong tightness.

    Read More

  • Testing indicators of mullite firebricks

    What is the temperature of a regular flame?  The external flame that generally belongs to the highest temperature of the flame is only around 500 ℃, but of course, the flame temperature will also vary depending on the combustion material. So what is the maximum refractory temperature range for mullite refractory bricks? According to its testing standards, the refractory temperature of mullite refractory bricks should be around 1200 ℃ -1700 ℃! What is this concept? The temperature for ironmaking is generally around 1300-1500 ℃, and mullite refractory bricks can theoretically withstand the test of molten iron for a certain period of time.The fire resistance performance of mullite refractory bricks is truly genuine. The ultra-high temperature resistance makes mullite refractory bricks the preferred material for high-temperature furnace construction. The national standard for testing mullite refractory bricks, GB/T 35845-2018 "Mullite based thermal insulation refractory bricks", was officially implemented on January 1, 2019. For the various testing indicators specified in the new standard, you are definitely not very familiar with them. Below, the editor will provide a detailed introduction for you.Firstly, the license plate identification of mullite refractory bricks is mainly divided into seven levels, namely MG-23, MG-25, MG-26, MG-27, MG-28, MG-30, and MG-32. The corresponding experimental temperatures with a heating line change rate not exceeding 2% are 1230 ℃, 1350 ℃, 1400 ℃, 1450 ℃, 1510 ℃, 1620 ℃, and 1730 ℃.Secondly, the physical and chemical testing indicators of mullite refractory bricks mainly include alumina content, iron oxide content, bulk density, room temperature compressive strength, permanent linear change rate during heating, thermal conductivity, 0.05MPa load softening temperature, and anti stripping performance. It should be pointed out that the high-temperature creep performance and density of mullite refractory bricks are the key to measuring their quality performance, and their corresponding detection indicators are the heating permanent linear change rate and volume density.Then, the appearance and allowable deviation detection indicators of mullite refractory bricks mainly include shape and size, allowable deviation in size, twist deviation, length of missing corners, length of missing edges, diameter of karst caves, crack length, and relative edge difference. It is worth noting that for some specific types of mullite refractory bricks, the allowable crack length can be determined by mutual agreement between supply and demand.

    Read More

  • Insulation materials: the safety guardian of power systems

    Insulation materials are a vital component of the power system. Their function is not limited to preventing the flow of current, but also ensuring the safe operation of the power system in a variety of ways. Isolate conductive components: Conductive components in the power system, such as wires, windings, etc., carry high-voltage current and also present potential safety risks. Insulating materials effectively isolate these conductive parts by wrapping or covering them, preventing direct contact between the conductive parts and with the external environment. This isolation not only prevents circuit short circuits, but also prevents equipment damage and serious accidents such as fires. Reduce current leakage: In power systems, current leakage is one of the major factors causing energy loss and equipment performance degradation. Insulating materials have high impedance properties and can effectively prevent accidental leakage of current on the surface or within the material, thereby reducing energy loss and improving the efficiency and stability of the power system. Reduce the risk of electric shock: During the operation of the power system, workers often come into contact with conductive parts. If these parts are not effectively insulated, there is a serious risk of electric shock. The use of insulating materials can effectively isolate current, reduce the possibility of injury by workers coming into contact with conductive parts, and ensure the personal safety of workers. Improve equipment durability and reliability: Insulation materials not only protect the safe operation of power systems, but also extend the service life of electrical equipment. Through effective insulation protection, the influence of moisture, corrosion and other external factors on electrical equipment can be reduced, and the durability and reliability of the equipment can be improved. This is critical to the stable operation and long-term performance of the power system. The role of insulation materials in power systems goes far beyond simple current blocking functions. They are an important guarantee for ensuring the safety of power systems, improving system reliability, and reducing accident risks. In power engineering, the correct selection and use of insulation materials is crucial, and their quality and performance are directly related to the operating efficiency and safety of the entire power system.Calcium Silicon PlateProduct Description: Silica calcium board, also known as gypsum composite board, is a type of multivariate material that is generally composed of natural gypsum powder, white cement, glue, and glass fiber. Silicon calcium board has properties such as fire prevention, moisture prevention, sound insulation, and heat insulation.

    Read More

  • Can waste refractory bricks be reused?

    Waste refractory bricks should not be reused in principle. In some kilns where the temperature is not high and the corrosiveness is not high, the removed refractory bricks during maintenance have no missing corners or edges on the appearance, and there is no damage. The color is basically not very different from the newly produced refractory bricks. Can these refractory bricks still be used? The dismantled refractory bricks have been fired at a certain temperature, but also subjected to high pressure and wind speed, resulting in significant changes in strength and overall performance. The overall indicators will decrease significantly. The service life of the furnace lining will be seriously affected when used in key parts of the kiln. So it cannot be used in critical or high-temperature areas. There are also many users and manufacturers who, after dismantling and replacing, manually select and use it in less important parts. Is this approach feasible? This method is also possible, but it is not completely unacceptable. For example, some kiln drying ovens can still be used. But it must depend on the condition of the replaced refractory bricks, which must be of complete size and have little color change before they can be used. But the fire mud left behind during the construction of waste refractory bricks must be scraped clean before they can be rebuilt and used on furnaces with low temperatures. The newly built kiln lining is absolutely unusable. Because the performance indicators of refractory bricks can no longer meet the requirements for use in high-temperature areas and furnaces. The thermal shock stability of waste refractory bricks has decreased too much, so there is no need to waste manpower and material resources with waste refractory bricks. However, it is still possible to use it on the external platform of some furnaces, as the temperature of the external platform will not exceed 200 ℃, and the performance of waste refractory bricks is still much better than that of ordinary red bricks. So, new furnaces, high-temperature and corrosive furnaces and components cannot be reused with waste refractory bricks at all.

    Read More

  • Insulating Refractory Bricks: The Key to Efficient Thermal Management

    Insulating refractory bricks play a pivotal role in numerous industries where efficient thermal management is paramount. These specialized bricks are designed to withstand extreme temperatures while simultaneously minimizing heat loss, making them indispensable in applications ranging from furnaces and kilns to boilers and incinerators.  One of the primary functions of insulating refractory bricks is to provide thermal insulation, which involves reducing heat transfer between different components of a system. These bricks are engineered using materials with high insulating properties, such as lightweight aggregates, perlite, vermiculite, or ceramic fibers. By incorporating these materials into their composition, insulating refractory bricks create a barrier that restricts the flow of heat, thereby minimizing energy consumption and optimizing thermal efficiency. Efficient thermal management is particularly crucial in industries where high temperatures are required for processes such as melting, molding, or chemical reactions. In such applications, insulating refractory bricks serve as a protective layer, shielding equipment and structures from the detrimental effects of intense heat. By maintaining stable operating temperatures and preventing thermal fluctuations, these bricks contribute to the longevity and reliability of industrial assets. Insulating refractory bricks offer additional benefits beyond thermal insulation. They possess excellent structural integrity, enabling them to withstand mechanical stresses and environmental factors encountered in harsh operating conditions. This structural resilience is essential for ensuring the longevity and reliability of industrial furnaces, kilns, and other high-temperature equipment. Another advantage of insulating refractory bricks is their ability to enhance process efficiency and productivity. By minimizing heat loss, these bricks facilitate faster heating and more uniform temperature distribution within industrial systems. This, in turn, reduces downtime associated with temperature fluctuations and allows for greater throughput and production consistency. The insulating refractory bricks contribute to environmental sustainability by promoting energy efficiency and reducing greenhouse gas emissions. By optimizing thermal management and minimizing heat loss, industries can decrease their reliance on fossil fuels and lower their carbon footprint. This aligns with global efforts to mitigate climate change and promote sustainable industrial practices.Heavy High Aluminum BrickSelect high bauxite clinker and the refractory clay to compound in multi-level and to mold, at last, burn under high temperature. The heavy high aluminum brick has three marks according to the content of the alumina, make sure the aluminum content and high-temperature performance of the heavy high aluminum brick by adjusting the grades of the high bauxite and percentage of clay to satisfy different service conditions and requirements.

    Read More

  • Monolithic Refractories have excellent chemical stability and can resist erosion by corrosive media

    The excellent chemical stability of Monolithic Refractories makes them highly prized in high-temperature industrial applications. This chemical stability refers to the material's ability to resist erosion by corrosive media such as acids and alkalis in various harsh environments, thereby protecting equipment and extending its service life. Behind this characteristic is the result of the interaction of a series of factors. The formulation design of monolithic refractory materials is very critical. In the selection of material components, some anti-corrosion compounds, such as alumina, silicates, etc., are often used. Alumina has excellent alkali resistance and can effectively prevent alkaline media from corroding materials; silicate has excellent performance in resisting acidic media. The reasonable combination of these ingredients enables the material to exhibit stable corrosion resistance in the face of different corrosive media. Process control during preparation is also critical to the chemical stability of the material. By strictly controlling sintering temperature, time and other process parameters, the microstructure of the material can be effectively controlled and the presence of defects and pores that may lead to corrosion can be reduced. In this way, the density of the material is improved, making it more difficult for corrosive media to penetrate into the material, thereby reducing the possibility of corrosion. Monomorphous refractory materials usually have high density and dense microstructure, which is one of the reasons for their outstanding corrosion resistance. Higher density materials will reduce the penetration of corrosive media, and the compactness of the microstructure makes it more difficult for corrosive media to form corrosive reactions inside the material. Therefore, even under extreme working conditions, these refractory materials can maintain stable chemical properties, ensuring the safety and stability of long-term operation of equipment. The reason why Monolithic Refractories can resist the erosion of corrosive media such as acids and alkalis is because they have excellent properties in terms of formula design, preparation process and microstructure. This makes them an indispensable and important part of high-temperature industrial equipment, playing a key role in ensuring the safe operation of equipment and extending its service life.Low-cement Prefab Application: Mainly for heating furnaces, annealing furnace trolleys, and other thermal equipment. Property: High compression strength,  greatly elevated temperature property, and convenient masonry.

    Read More

  • Insulating Refractory Bricks: Balancing Lightweight Design with Durability

    Insulating refractory bricks play a pivotal role in industries requiring high-temperature insulation, such as steel production, glass manufacturing, and ceramic processing.  One of the primary considerations in the design of insulating refractory bricks is their weight. These bricks are often used to line furnaces, kilns, and other industrial equipment, where minimizing the overall load is critical for both safety and efficiency. By incorporating lightweight materials such as ceramic fibers, perlite, or vermiculite into the brick matrix, engineers can reduce the density of the bricks without sacrificing thermal performance. This lightweight design not only eases handling and installation but also helps to lower energy consumption by reducing the thermal mass of the insulated structure. Lightweight alone is not sufficient to meet the demands of industrial applications. Durability is equally important, especially in environments characterized by high temperatures, thermal cycling, and chemical corrosion. Insulating refractory bricks must withstand these harsh conditions over prolonged periods without degrading or losing their insulating properties. To achieve this balance between lightweight design and durability, manufacturers employ advanced fabrication techniques and select materials with high heat resistance and mechanical strength. For example, alumina-silica refractory materials are commonly used in insulating bricks due to their excellent thermal stability and resistance to thermal shock. These materials can withstand rapid changes in temperature without cracking or spalling, ensuring the long-term integrity of the insulated structure. Additionally, additives such as zirconia or chromia may be incorporated to enhance the refractory's resistance to chemical corrosion from molten metals or acidic gases. Another strategy for enhancing the durability of insulating refractory bricks is through careful engineering of their microstructure. By controlling the distribution and orientation of pores within the brick matrix, manufacturers can optimize thermal conductivity while minimizing the ingress of damaging substances. This pore structure also facilitates the escape of trapped gases during firing, preventing the formation of internal stresses that could compromise the brick's integrity. The development of insulating refractory bricks represents a delicate balancing act between lightweight design and durability. Engineers and manufacturers must carefully select materials, optimize microstructures, and employ innovative fabrication techniques to meet the demanding requirements of high-temperature industrial applications. By achieving this balance, insulating refractory bricks can provide reliable thermal insulation while withstanding the rigors of harsh operating conditions, ultimately contributing to the efficiency and longevity of industrial processes.Corundum Brick,Corundum Mullite Brick,Light Corundum Brick Application: Applied to a variety of high-temperature kilns, such bricks may be manufactured into saggars, guide rails, ejector plates, refractory slabs, brace plates, burn plates, burner blocks and hearths, furnace tubes, and other refractory products. Property: High purity for raw materials and high operating temperature, compact and uniform structure, and has anti-oxidation feature.

    Read More

  • How the size of insulating firebricks affects their thermal conductivity

    The size of insulating firebricks has a certain impact on their thermal conductivity. In the industrial field, thermal conductivity is an important factor to consider when choosing insulating firebricks. For insulating firebricks, larger bricks have a longer heat transfer path and a larger surface area, which can efficiently transfer heat. The larger surface area means that more heat can be transferred through the surface of the brick. These factors together mean that larger bricks typically have lower thermal conductivity. On the other hand, smaller bricks have a relatively shorter heat transfer path, and their smaller surface area means that they transfer relatively less heat per unit time. Therefore, smaller insulating firebricks generally have higher thermal conductivity. In addition, smaller bricks may require more joints to cover the specified surface area. These joints themselves can become a path for heat transfer, further increasing the overall thermal conductivity of the brick. Anti-carburizing Brick and High Aluminum,Low Iron Brick Application: Wall and lining insulating materials for carburizing furnaces, nitriding furnaces, continuous furnaces, rotary body furnaces, pusher furnaces, and other thermal treatment furnaces as well as other industrial kilns.

    Read More

  • What are the main advantages of insulating refractory bricks in industrial applications

    Insulating refractory bricks have a variety of advantages in industrial applications, making them a key material in high-temperature industrial processes. These refractory bricks have excellent high temperature resistance and remain stable under extreme thermal conditions. They can withstand temperatures in excess of thousands of degrees Celsius. Of particular importance are the excellent thermal insulation properties of these refractory bricks. They effectively reduce heat conduction and losses, significantly improving the energy efficiency of industrial equipment. In addition, its excellent corrosion resistance enables it to withstand the erosion of chemicals and high-temperature gases, extending the service life of industrial equipment. The structural stability of insulating refractory bricks is another key advantage. They have stable structural properties and are not easily deformed or damaged by external forces. This ensures the structural stability and safety of the equipment. Insulating refractory bricks are also highly customizable. They can be customized to meet the specific requirements of different industrial applications to meet specific process requirements. In addition, insulating refractory bricks are easy to install and maintain. They have good processing and connection properties, are easy to install and disassemble, and they are easy to maintain, which greatly reduces the downtime and maintenance costs of industrial equipment. Insulating refractory bricks are made of natural minerals and will not produce harmful gases or pollutants during use, making them environmentally friendly. Heavy High Aluminum Brick Product Description: Select high bauxite clinker and the refractory clay to compound in multi-level and to mold, at last, burn under high temperature. The heavy high aluminum brick has three marks according to the content of the alumina, make sure the aluminum content and high-temperature performance of the heavy high aluminum brick by adjusting the grades of the high bauxite and percentage of clay to satisfy different service conditions and requirements.

    Read More

  • High temperature performance of Monolithic Refractories: excellent stability and durability

    Monolithic Refractories exhibit remarkable performance in high-temperature environments, making them indispensable materials in modern industry and driving technological advancements in related fields. Below is a detailed interpretation of the high-temperature performance of refractory materials, including their stability, durability, and other key characteristics. Let's delve into the high-temperature stability of Monolithic Refractories. These materials are specially designed and manufactured to maintain their physical and chemical properties stably for extended periods at extremely high temperatures. Whether subjected to continuous high-temperature exposure or sudden temperature changes, refractory materials can withstand and retain their original shape and structure. This stability makes them an ideal choice for high-temperature furnaces, thermal equipment, and industrial kilns. Refractory materials possess excellent thermal shock resistance. Many materials tend to crack or break under rapid heating or cooling processes due to the abrupt temperature changes. However, refractory materials, with their unique composition and structure, can absorb and disperse the stresses generated by temperature changes, thus avoiding such damage. This versatility makes them widely used in industrial equipment that requires frequent startups and shutdowns. Refractory materials maintain high strength even at high temperatures. This strength stems not only from the inherent properties of the materials but also from their closely related microstructural changes at high temperatures. By precisely controlling the composition and manufacturing processes of the materials, they can maintain sufficient strength at high temperatures to withstand various mechanical and thermal stresses. In addition to the aforementioned characteristics, refractory materials also demonstrate outstanding erosion resistance. In high-temperature environments, many chemical substances may corrode materials, leading to a decline in performance. However, refractory materials can resist the corrosion of these chemical substances due to their special chemical composition and microstructure, thus maintaining their long-term stability and durability. It is worth mentioning the thermal insulation performance of Monolithic Refractories. Due to their low thermal conductivity and other unique physical properties, these materials can effectively insulate high temperatures, reduce heat loss, and improve equipment efficiency. This is crucial for many industrial equipment that needs to operate for long periods at high temperatures, as effective thermal insulation can significantly reduce energy consumption and operating costs. The high-temperature performance of Monolithic Refractories endows them with outstanding stability and durability in high-temperature environments. These characteristics make them promising in various industries such as metallurgy, chemical engineering, ceramics, and glass. With the continuous advancement of technology and the increasing demands of industrial production, refractory materials will continue to play their unique role in driving the development and progress of related industries. Indefinite Refractory Castables Application: For metallurgy, petrifaction, electricity, and building industry: heating furnace, annealing furnace, converter, electric furnace, thermal treatment furnace, garbage incinerator, catalysis furnace, cracking furnace, and cement kiln.

    Read More

NEWs

PRODUCTS