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A refractory ball is a kind of sphere made of industrial alumina and refractory kaolin as the main raw materials and calcined at high temperatures with a scientific formula. It is mainly divided into high alumina refractory balls, silicon refractory balls, magnesium aluminum refractory balls, porcelain balls, etc. It is suitable for converters and shift furnaces in the sulfuric acid and fertilizer industries, and high-alumina refractory balls are suitable for hot blast stoves, heating shift furnaces, and other equipment in urea, steel, and other industries. The main function of the refractory ball in the actual use process is that it has good high-temperature resistance and high hardness. Putting the refractory ball evenly into the heating furnace can evenly distribute the gas, and the uniformly dispersed gas can reduce the impact on the gas. The role of the catalyst prolongs the service life of the catalyst, and at the same time, it has high hardness, so it can support the heating object in the heating furnace. The working principle of the refractory ball is to divide the airflow into small streams by many small balls. The airflow flows through the heat storage body for a period of time, forming a fierce...
High alumina anchor bricks are refractory bricks used in heating furnaces. High alumina anchor bricks are also called hanging bricks. They are mainly used to connect and support structures of refractory bricks and ordinary fired bricks, for heating furnace roof walls, or other components. High-alumina anchor bricks are made of natural high-grade bauxite as the main refractory raw material. Soft or semi-soft clay is added to the high-alumina clinker as a binder, and the batching, mixing, molding, drying, and final firing are started. High alumina refractory brick. Under normal circumstances, the alumina content of high-alumina anchor bricks is above 55%. High-alumina anchor bricks can be produced and processed according to customer needs. The load softening temperature of high-alumina anchor bricks can reach 1550°C, which can meet the requirements of heating furnace roof lining. performance requirements. Features of high alumina anchor bricks for heating furnace: 1. The volume is stable at high temperatures. 2. Good corrosion resistance. 3. High softening temperature under load. 4. Anti-peeling, high compressive strength. The high-alumina anchor brick is a special-shaped high-alumina refractory brick, including a column composed of a hanging end and an anchor body, and an interval separation groove is arranged on the surface of...
Corundum brick is a kind of refractory material with high hardness, wear resistance, high melting point, and corrosion resistance, which is used for the inner wall and bottom of a high-temperature kiln. The main component of corundum brick is alumina (Al2O3), its content can reach more than 90%. The alumina in the corundum brick exists in polycrystalline form, and the grains are combined by a binder. Therefore, in the kiln, the corundum brick can effectively protect the furnace body and prolong the life of the kiln. service life and increase production efficiency. Physical properties of corundum bricks 1. High hardness. Corundum brick has very high hardness, its Mohs hardness can reach 9, second only to diamond, so it is often used in some high-temperature environments that need to withstand high strength and high wear. 2. Wear resistance. Corundum bricks have very good wear resistance and can withstand long-term high-speed, high-temperature, high-pressure erosion and erosion in a high-temperature kiln environment. 3. High-temperature point. The melting point of corundum brick is about 2040°C, which can maintain long-term stable performance in high-temperature environments. 4. Corrosion resistance. Corundum bricks have good corrosion resistance to acids, alkalis, and other chemical substances, and can maintain stable...
A circulating fluidized bed boiler is a kind of high-efficiency and energy-saving boiler equipment. It uses circulating fluidized bed technology to burn fuel under high temperatures and high pressure environments. Refractory materials are used when building circulating fluidized bed boilers to ensure They can withstand the high temperature when the boiler is running, so the selection of refractory materials is very important, so what refractory materials are needed for the construction of circulating fluidized bed boilers, today I will take you to understand. 1. High alumina refractory bricks. The high-temperature area inside the circulating fluidized bed boiler needs to use high-alumina refractory bricks to resist high-temperature corrosion and erosion. Sometimes the temperature can reach thousands of degrees. High-temperature resistance and corrosion resistance, able to withstand the impact and corrosion of high-temperature combustion gas in circulating fluidized bed boilers, we need to choose according to the used parts and choose suitable high-alumina refractory bricks for different parts for masonry. 2. Silicate refractory bricks. Silicate refractory brick is one of the main refractory materials for circulating fluidized bed boilers. Its main component is silicate. Silicate refractory brick has excellent high-temperature resistance, wear resistance, and alkali resistance, and can withstand circulating fluidized Impact...
The refractory ball is a kind of spherical refractory material made of industrial alumina and refractory kaolin after a certain scientific ratio and fired at high temperatures. A kind of fire-resistant ball, which has the characteristics of high strength, high hardness, high wear resistance, etc., so what occasions are high-alumina fire-resistant balls generally used in, today I will give you a brief introduction to the use of high-alumina fire-resistant balls. Refractory balls are divided into ordinary refractory balls and high-alumina refractory balls. Ordinary refractory balls are suitable for converters and converters in the sulfuric acid and fertilizer industries. High-alumina refractory balls are suitable for hot blast stoves and heating converters in urea, steel, and other industries. As a refractory material, high alumina refractory balls are widely used in ceramic firing, enamel firing, glass firing, chemical, and other factories due to their small size, high temperature, corrosion resistance, and pollution-free. They are mainly stacked in industrial kilns and can achieve the effect of heat storage. Due to the high-temperature resistance of the refractory ball, its highest refractory temperature can reach about 1900 degrees, so it is also especially suitable for high and low-temperature conversion furnaces, reformers, hydrogenation converters, desulfurization tanks and...
The traditional masonry method of chimney lining is to use acid-resistant cement and acid-resistant bricks for masonry. Nowadays, the proportion of pouring and masonry using light acid-resistant castables is constantly increasing. However, in the masonry mode of acid-resistant brick masonry, the problem of full horizontal and vertical joints of bricks will make the airtightness of the masonry poor, and the heat insulation castable of the heat insulation layer will become damp, which will cause the heat insulation performance to decline. The breakage of heat-insulating castables and the loose combination of bricks and bricks will cause corrosive fumes to penetrate the masonry and insulation layer and corrode the outer cylinder wall. It is very inconvenient to construct the chimney with heat-insulating castables and lining bricks. Practical problems such as the installation of heat-insulated castables, the treatment of gaps between bricks, and moisture-proof measures seriously affect the chimney’s years of use. If the heat-insulating castable and the lining of the anti-corrosion brick masonry are combined into one, light or ultra-light acid-resistant castables with strong corrosion resistance, good heat insulation, and high strength are used to make lightweight castables by pouring. High-quality acid-resistant castable lining, heat insulation performance, and anti-corrosion performance are combined,...
Refractory brick is a kind of refractory material used to build smelting furnaces and combustion kilns. It is made of refractory clay or other refractory raw materials. It can withstand high temperatures of more than 1700 degrees. The size of refractory bricks is very large. Choose according to different use environments. Generally speaking, refractory bricks can be divided into shaped refractory bricks and unshaped refractory bricks. Shaped Refractory Brick Shaped refractory bricks are generally fixed in size, also known as general-purpose refractory bricks. General-purpose refractory bricks are divided into five types: straight bricks, thick wedge-shaped bricks, vertical thick wedge-shaped bricks, vertical wedge-shaped bricks and arch-foot bricks. It is generally used for the masonry of right-angled walls and radial walls of thermal equipment in industrial kilns. Usually, the common specifications of shaped refractory bricks are G-shaped bricks and T-shaped bricks. 1. The common straight bricks in our daily life are: 230*114*65mm, 230×150×75mm, 345×150×75mm, 230×150/135×75mm, 345×150/130 ×75mm, 230×150/120×75mm, 345×150/110×75mm. 2. The common sizes of wedge-shaped refractory bricks that are common in our daily life are: 114×65/35×230mm, 114×65/45×230mm, 114×65/55×230mm, 114×55/45×230mm, 114× 75/45×230mm, 114×75/55×230mm, 114×75/65×230mm, 114×70/60×230mm, 114×85/55×230mm, 114×80/50×230mm. 3. The common sizes of arch foot bricks in our life are: 132×114×230×33mm, 199×114×230×84mm, 199×114×230×36mm, 266×230×114×67mm,...
High alumina bricks have been widely used in the construction of various industrial kilns because of their special fireproof performance. However, due to its different performance from other bricks, it also has its own unique aspects that need to be paid attention to on the wall. High alumina brick lining can be divided into four categories according to the brick joint size and fineness level. The type and size of brick joints are Grades I ≤ 0.5mm; Grade II ≤ 1mm; Grade III ≤ 2mm; Grade IV ≤ 3mm. The mortar joints of the brick joints should be filled with fireproof mud, and the joints of the upper and lower bricks should be staggered. First: The preparation of wall refractory mortar should follow the following principles: 1. Pre-test and pre-pave various refractory mortars before building walls to determine the bonding time, initial setting time, consistency, and water consumption of different mortars. 2. Different slurries need to be made with different instruments and should be cleaned immediately. 3. Different mortars should be mixed with clear water, the amount of water should be accurate, the mixing should be even, and it can be used at any time. The prepared hydraulic and pneumatic...
G-size refractory bricks belong to the size of blast furnace products. The general materials are high alumina and clay. Products of various materials can be customized, such as: clay, high alumina, silicon, corundum, mullite, etc., to meet the needs of blast furnaces. Requirements for the use of refractory bricks. G1-G8 are blast furnace refractory bricks. Commonly used are high alumina bricks and clay bricks. The following is the standard introduction of G series bricks G1: 230*15*75(mm) G2: 345*150*75(mm) G3: 230*150*135*75(mm) G4: 345*150*130*75(mm) G5: 230*150*120*75(mm) G6: 345*150*110*75(mm) G7: 230*150*90*75(mm) G8:345*150*90*75(mm) There are many kinds of blast furnace refractories. Generally speaking, clay bricks or high alumina bricks with excellent functions are used in the middle and upper parts of the furnace body, while special refractory materials such as carbon products, silicon carbide bricks, mullite bricks, and corundum bricks are used in the lower part of the furnace body. The waist and belly of the furnace body, especially the recently produced silicon carbide bricks, have been successfully used in blast furnaces. At the same time, other unshaped refractory materials have also been widely used. When building wall blast furnaces, hot blast furnaces, or lime kilns, the cooperation of the two brick types allows...
Refractory cement is a special type of cement with high refractory performance, which is widely used in fields under high-temperature environments such as construction engineering, metallurgical industry, and chemical industry. Refractory cement is not only a building material, but also a key protective material that can effectively deal with problems such as high temperature, corrosion, and damage. Many people will pay attention to the price of refractory cement before choosing refractory cement. The price of refractory cement is affected by many factors such as brand, specification, and purchase volume. Therefore, there is no fixed answer to how much a pack of refractory cement costs, but a specific evaluation based on the actual situation. Take duck brand refractory cement as an example, the weight of each package of refractory cement is 50kg, and the price per ton is about 3200-3800, so the price of duck brand refractory cement is about 160-190 yuan per package, but according to the purchased model Unlike the quantity, the price must fluctuate. The price of different brands of refractory cement may vary. Refractory cement of some well-known brands is generally more expensive due to its reputation and quality assurance. And some unknown brands or refractory cements...
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