High Alumina Bricks
Fused AZS Zirconia Corundum Bricks
Lightweight Mullite Bricks
Andalusite Bricks
Low Creep High Alumina Bricks
Fire Clay Bricks
Acid-Resistant High Alumina Bricks
Low Creep Fire Clay Bricks
High Alumina Insulation Bricks
Phosphate High Alumina Bricks
High Alumina Refractory Bubble Bricks
Corundum Bricks
Corundum Mullite Bricks
Chrome Corundum Bricks
High Alumina Refractory Castables
Corundum Castables
Corundum Mullite Castables
Zirconia-Corundum Casting Castables
Steel Fiber Castables
Mullite Castables
High Alumina Insulating Castables
Silicon Carbide Castables
Magnesia Alumina Spinel Castables
Refractory Ramming Mass
High Alumina Refractory Mortar
High Alumina Refractory Cement
Acid Resistant Castables
Alkali Proof Castables
Magnesia Bricks
Silica Bricks
Silicon Carbide Refractories
Refractory Precast Blocks
Chrome Corundum Casting Castables
Chrome Corundum Refractory Bricks
Refractory Ceramic Balls
Refractory Honeycomb Ceramic Regenerator
Refractory Corundum Ceramic Balls
Home > News
With the increasing awareness of energy conservation and environmental protection, lightweight thermal insulation refractory bricks have been widely used in kiln design in high-temperature industries. They not only conform to the concept of environmental protection skills but also greatly improve work efficiency and reduce the production investment cost of enterprises. First of all, lightweight insulation bricks refer to refractory products with high porosity, small volume, and low thermal conductivity. Their main features are porous structure (porosity is generally 40%~85%) and high thermal insulation performance. In terms of construction, lightweight insulation bricks are light in weight, which greatly reduces the weight of the kiln. The construction is simple and convenient, reducing labor intensity and improving work efficiency. What is the price of lightweight insulation bricks? I believe it is a question that most people are more concerned about. Henan Sun Hung Kai Refractory Materials Co., Ltd., a manufacturer of lightweight insulation bricks, gave some responses to this question: Due to the wide variety of lightweight insulation bricks, traditional lightweight insulation bricks include lightweight diatomaceous earth insulation bricks and lightweight mullite bricks, alumina hollow ball bricks, high alumina concentrating bricks, lightweight clay bricks, etc. In terms of the price of insulation bricks,...
1. The difference between mash materials and castable materials in construction methods Pouring materials refer to on-site construction, which is mainly formed by pouring, vibration, or tamping methods. Fixed models can also be prepared in advance and ready for use. The use is more convenient, as long as the proportion specifications during the construction process are paid attention to. When used on site, high-aluminum ramming materials are mainly rammed with pneumatic picks or machines, and the wind pressure is not less than 0.5MPa. When less materials are used, the materials can also be fed manually. Relatively speaking, the construction operation without castables is simple, and the ramming intensity needs to be controlled. 2. Differences in raw materials Pounded materials are mixed with aggregates, powders, binders, and additives and can be divided into graphite, clay, silicon carbide, and magnesium. Castables are made of refractory materials with fixed binders and additives. They have high fluidity and are divided into main components and additional components. Subdivisions can also be divided into refractory castables such as lightweight castables, high-aluminum castables, corundum castables, and steel fiber castables. Better and richer performance than pounded material. 3. Different applications under specific application conditions Although mash materials and...
Industrial high-temperature kiln special-shaped bricks are a type of refractory bricks with special specifications in high-temperature kilns. The shapes of these refractory bricks are irregular and are usually customized according to the specific place and environment where the kiln is used. Not only that, the raw material ratio of special-shaped bricks for industrial high-temperature kilns is also based on the actual use occasion. Industrial high-temperature kilns special-shaped bricks, as special refractory bricks, play a very important role in the construction of high-temperature kilns. They are usually specially applied in certain parts. During the production process, the shape and specifications of the special-shaped bricks are also required. Make special molds. The quality of the mold directly affects the shape and size of the brick. Features of special-shaped bricks for industrial high-temperature kilns 1. Excellent high-temperature performance: Special-shaped bricks for industrial high-temperature kilns are made of materials with excellent high-temperature performance, which can maintain excellent performance at high temperatures and ensure the safe operation of industrial kilns. 2. Strong corrosion resistance: Since the materials in industrial kilns will corrode refractory bricks, the special-shaped bricks in industrial high-temperature kilns have strong corrosion resistance and can effectively protect the kiln. 3. High mechanical strength:...
The price of castables has always been a topic that customers are more concerned about, and the prices online are all kinds of strange, which makes customers very confused. However, there are many types of castables, and each castable has different raw material ratios, different performance indicators, and raw materials. Cost and other factors are the main factors affecting the price of castables, so the price of castables fluctuates greatly. Castables can be divided into major categories such as corundum castables, non-stick aluminum castables, light acid-resistant castables, high-aluminum castables, silicon carbide castables, etc. There are dozens of major categories alone. There are many categories and models. Each castable has different uses, different proportions, and different performance indicators, so the price is difficult to determine. Generally speaking, the price range of castables ranges from 1,000 yuan to 15,000 yuan per ton. etc., so the specific price must be determined based on the specific needs and the fire resistance of the product before quoting. In the process of understanding the price of castables, we must first understand the main factors that affect castables, including raw material costs, transportation costs, performance indicators, construction environment, etc. The quotation staff will mainly based on your...
Silicon carbide brick is a high-grade refractory material. It is mainly made of silicon carbide as raw material, added with a binder (or without a binder), and is made through batching, mixing, molding, and firing. The refractory temperature can reach 1920°C, due to its excellent high-temperature performance and chemical stability, it is widely used in various industrial kilns and high-temperature kilns, such as ceramic high-temperature kilns, glass kilns, metallurgical kilns, chemical kilns, etc. In ceramic high-temperature kilns, silicon carbide bricks are mainly used for the construction of ceramic high-temperature kiln linings. The high-temperature properties and chemical stability of silicon carbide bricks can meet the high-temperature needs and corrosion resistance needs during the ceramic firing process. At the same time, the carbonization of the low volume density of silica bricks helps reduce the weight and volume of the kiln and reduces construction and operating costs. In glass furnaces, silicon carbide bricks are often used in more important parts, such as the lower part of the furnace body, waist, and belly of large and medium-sized blast furnaces. They can withstand the high temperatures during the glass firing process and the corrosiveness of the glass melt. Improve the quality and yield of glass...
The commonly used refractory bricks in hot blast stoves mainly include silica bricks, high alumina bricks, clay bricks, mullite bricks, etc. Each hot blast stove may be different depending on the use. However, the main selection of refractory materials for hot blast stoves it is determined by the hot air temperature of the hot blast furnace. Generally, when the air temperature is less than 900°C, clay bricks are often used. When the air temperature is between 900 and 1100°C, the furnace lining and checker bricks in the high-temperature part are made of high alumina bricks and molybdenum bricks. Laminated bricks or sillimanite bricks; when the wind temperature is higher than 1100°C, high alumina bricks, mullite bricks, and silica bricks are generally used as furnace lining or grid bricks. But the overall difference is not bad. Today we focus on high alumina bricks for hot blast furnaces. High alumina bricks in hot blast stoves are often used in checkered bricks on the upper part of hot blast stoves, rotating bricks on vaults, and large walls, that is, in high-temperature parts of hot blast stoves. Our commonly used high alumina bricks generally include first-level high alumina bricks, second-level high alumina bricks, and...
The thermal vibration resistance characteristics of refractory castable materials refer to the raw material’s ability to withstand ultra-low temperature conditions after being subjected to high temperatures for an instant. It refers to the evaluation of the main index value of the damage resistance of the raw material when it withstands large temperature changes. For each test the closer the distance between values, the higher the accuracy. Conversely, the lower the accuracy, the lower the ability to resist damage. It has been called thermal stability, thermal shock stability, thermal shock resistance, temperature sudden change resistance, rapid cooling and heating resistance, etc. 1. Under the equipment conditions, plus zirconium corundum raw materials, zirconium corundum is an artificial raw material with high wear resistance and heat resistance, high strength, symmetrical expansion, high load softening point, good thermal shock reliability, and high-temperature stress relaxation value. Small, good resistance to organic chemical corrosion and other characteristics. 2. Utilize the difference in linear expansion index between stone and cultivation matrix to balance the thermal vibration properties of refractory castables, reduce the thermal expansion rate of raw materials, try to use materials with lower thermal expansion rates, and increase large stones + low-expansion cultivation matrix to form...
Wear-resistant castables are subject to collision, erosion, and wear by high-concentration particles at high temperatures, and different situations will occur, especially large-scale collapse, cracks, and cracking of existing wear-resistant castables. Problems during the use of wear-resistant castables 1. The expansion coefficient of wear-resistant and refractory castables is different from that of steel, and its expansion and contraction cannot be synchronized with external steel. When the expansion joints reserved for wear-resistant castables cannot compensate for the expansion of the boiler, the extrusion between the wear-resistant materials will collapse. 2. The internal anchors of the wear-resistant castable are made of heat-resistant steel, which has poor temperature resistance. It will be carbonized and fractured in high-temperature flue gas for a long time, resulting in large-scale collapse of the wear-resistant material: the quality of the construction furnace is poor, and the wear-resistant castable contains high water content, which will cause ignition. Then it is converted into water vapor. When the steam pressure exceeds the tensile strength of the wear-resistant castable, it will cause the lining layer to explode, causing the furnace wall to collapse after ignition: The collapse factors of the wear-resistant castable are related to the thermal shock stability of the material, and...
The service life of refractory castables is affected by many factors. In addition to strictly following the construction standards during construction, curing, and baking after construction is completed is also very important. Good early maintenance is essential to extend the service life. Today, the editor will take you to understand how to extend the service life of refractory castables from seven aspects. 1. Maintenance of refractory castables Maintenance is one of the important factors affecting the performance and service life of castables, and it is also one of the reasons that is easily overlooked. Maintenance is to provide sufficient initial strength to the binder in the castable to obtain sufficient initial strength. The maintenance time is related to the type of binder of the castable. It can be said that maintenance can give the bonding agent time to solidify and harden to obtain sufficient initial strength. 2. Baking refractory castables Baking is to eliminate excess moisture, maintain and bake according to standards, promote the sintering process at high temperatures, and further improve the physical properties of the cast body. Therefore, refractory castable materials must be baked before use. The baking should meet the baking system to ensure that the free...
1. Inspection before construction Pre-construction inspections should be carried out strictly, including the following: 1.1 Clarify the appearance and structure of the castable equipment and clean it; 1.2 Setting of process holes; 1.3 The integrity of construction machinery and tools, vibrating tools, etc. must be in good condition; 1.4 Anchor type, size, layout, and welding quality, metal anchors must be compensated for expansion; 1.5 Preventive measures should be taken to prevent water (glue) loss of castables in the surrounding refractory brick insulation layer; 1.6 Packaging and factory date of castables, and conduct pre-tests to check for failure; 1.7 The quality of construction water must reach the quality of drinking water; 1.8 Implementation of construction process formula; 1.9 Pouring procedure. If the above inspection fails, construction can only be carried out after passing the inspection. Expired materials shall not be used. 2. Formwork for construction It can be made of steel plate or hardwood board (bamboo board). The formwork must have sufficient strength, good rigidity, no deformation, no displacement, and no leakage of slurry. Use mold remover for steel formwork and paint waterproof paint for wooden formwork. Reused wooden boards should be cleaned before use. 3. Castable lining construction 3.1 Mixing...
Home Tel Email Inquiry
