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Refractory mud, refractory cement, and refractory castable are all amorphous refractory materials, and they are commonly used in the refractory industry. Refractory mud is used for the masonry of refractory bricks. Refractory mud is also called refractory glue or joint material. It is used as the joint material of refractory masonry. Refractory cement is the material for making refractory concrete. Refractory castable is made of refractory aggregate, powder, and binder. It is also called casting material because of the pouring construction. 1. Refractory mud Refractory mud can be divided into clay, high alumina, siliceous, and magnesia refractory mud according to the material. It is composed of refractory powder, binder, and admixture. The refractory mud made of refractory clinker powder and the appropriate amount of plastic clay as binder and plasticizer is called general refractory mud. Its room temperature strength is low, and it has higher strength when it forms a ceramic bond at high temperatures. The particle size of refractory mud varies according to the application requirements. Its limit particle size is generally less than 1mm, and some are less than 0.5mm or finer. The material of refractory mud should be considered together with the material of refractory products of...
Refractory mud Ingredients: Refractory mud is usually composed of refractory materials such as silicate or high alumina, binders, and other additives. Features: Refractory mud has relatively good plasticity and is easy to construct. It is suitable for masonry, repair, and connection of small parts on the surface of high-temperature equipment. It can withstand high temperatures, but the use temperature range is relatively low. Application: Refractory mud is often used for repairing, patching, plugging, and masonry of furnace walls, furnace tops, and other parts of high-temperature equipment. Refractory cement Ingredients: Refractory cement is mainly composed of materials such as refractory stone, high alumina stone, and a certain proportion of binders. Features: Refractory cement has high high temperature resistance and corrosion resistance. It is a structural refractory material suitable for direct masonry of the overall structure of high-temperature equipment, with good compressive strength and stability. Application: Refractory cement is often used for the masonry of the overall structure of high-temperature equipment such as furnace bodies, kilns, furnaces, such as masonry of furnace walls, furnace bottoms, etc. Refractory castables Ingredients: Refractory castables are composed of refractory aggregates, binders, and water-adding agents, among which refractory aggregates can be high-aluminum aggregates or silicon carbide. Features:...
Chrome corundum castable is mainly used in furnace linings and kiln furniture in industries such as steel, non-ferrous metals, and glass. It is a high-quality refractory material with high refractoriness, high strength, high wear resistance, and good thermal shock stability. In the steel industry, chrome corundum castable is widely used in lining materials of blast furnaces, hot blast furnaces, heating furnaces, soaking furnaces, and other furnaces. In the non-ferrous metal industry, it is used as a lining material for equipment such as smelting furnaces, insulation furnaces, and heating furnaces. In addition, chrome corundum castable can also be used in key parts such as melting furnaces and tin baths in the glass industry, providing good refractory properties and thermal stability. Due to its excellent performance, chrome corundum castable can also be used in the construction, thermal repair, renovation, and other operations of high-temperature kilns, which can extend the service life of kilns and improve energy efficiency. At the same time, waste materials and waste slag generated during the production and use of chrome corundum castables can be reused, reducing pollution to the environment. In short, chrome corundum castable, as a high-quality refractory material, has been widely used in steel, non-ferrous metals,...
Corundum mullite castables are a kind of ceramic material composed of corundum and mullite, which has the characteristics of high strength, high hardness, high wear resistance, and high-temperature stability. Corundum mullite castables are widely used in the industrial field, such as wear-resistant linings of high-temperature bearings, support linings of high-temperature furnace tubes, high-temperature kiln tools, etc. Its excellent performance makes it widely used in the field of high-temperature industry and can meet the requirements of high-temperature industry for high-temperature wear resistance, high-temperature strength, and other properties. In addition, corundum mullite castables can also be used in the field of aerospace, such as nozzles and combustion chamber linings of high-temperature aircraft engines. The application in the field of aerospace can improve the strength and service life of high-temperature components, which plays an important role in improving the performance and safety of aerospace vehicles. In short, corundum mullite castables have excellent performance and application range and have broad application prospects in high-temperature industry and aerospace.
Selecting refractory bricks for use in hazardous waste incinerators requires consideration of a variety of factors, including fire resistance, chemical stability, corrosion resistance, and the ability to adapt to specific process conditions. The selection should be based on the chemical composition of the incinerated materials and the type of kiln. Here are some suggestions for choosing refractory bricks: Refractory temperature: Choose refractory bricks that meet or exceed the operating temperature of the incinerator. Generally, bricks with high refractory temperatures are required under high-temperature conditions. For example, for high temperatures exceeding 1500 degrees Celsius, you may need to choose corundum, mullite, silicon carbide, chromium-containing refractory materials, etc. Corrosion resistance: The gases produced by hazardous waste incinerators may contain acidic or alkaline substances, so corrosion-resistant refractory bricks are required. Materials such as alumina and aluminum silicate usually have good corrosion resistance. Thermal shock stability: Incinerators may experience rapid changes in temperature during operation, so refractory bricks are required to have good thermal shock stability to prevent the bricks from cracking or breaking due to temperature changes. Chemical stability: Choose refractory bricks that can withstand the chemical reactions and high-temperature conditions that occur during incineration. Ensure that the refractory bricks will not react...
In the acidic environment of the push plate kiln, acid-resistant refractory materials need to be used to protect the kiln body from corrosion and high-temperature damage. A push plate kiln is a type of kiln used to produce ceramic products. It is an intermittent kiln that is loaded and unloaded periodically. It usually consists of a kiln body, a fire channel, a combustion chamber, and a smoke exhaust system. The working principle of the push plate kiln is that ceramic products undergo a series of heating, sintering, and cooling processes in the kiln. There are a series of push plates inside the kiln body. Ceramic products are pushed into the kiln through these push plates. After a certain time and temperature treatment, they are pushed out of the kiln by the push plate on the other side. The following are some commonly used acid-resistant refractory materials: Acid-resistant bricks: Such as aluminosilicate bricks (often called silica-alumina bricks), silicon carbide bricks, etc., which have high acid resistance and high-temperature resistance. Acid-resistant castable: For example, aluminum silicate castable is an acid-resistant refractory material used to cast the inside of the kiln body and can provide effective protection. Acid-resistant coating: Some special acid-resistant coatings...
Corundum brick is a high-temperature refractory material whose main component is alumina. Corundum is a crystal structure formed from aluminum oxide that is highly hard and wear-resistant. Corundum bricks can be divided into several main categories based on other ingredients and uses in corundum bricks: Ordinary corundum bricks: The main component is alumina and does not contain other special additives. This type of corundum brick is usually used in general high-temperature fire-resistant situations. Zirconium corundum bricks: Add a certain amount of zircon stone to alumina to improve the fire resistance and thermal shock stability of corundum bricks. This kind of corundum brick is suitable for harsh high-temperature process conditions. Chrome corundum bricks: Adding a certain amount of chromium oxide to alumina can improve the corrosion resistance of corundum bricks and is suitable for some high-temperature environments with corrosive atmospheres. Silicon carbide corundum brick: Silicon carbide is added to corundum brick to improve its wear resistance and impact resistance. This kind of corundum brick is often used in some industrial situations that require high wear and impact. Mullite corundum bricks: Adding an appropriate amount of mullite to corundum bricks can improve their slag resistance and thermal shock resistance. The classification of...
The choice of T3 clay bricks or high alumina bricks for the kiln depends on many factors, including the kiln’s usage environment, process requirements, budget, and required fire resistance. Usage environment: If the working temperature of the kiln is high and there are high-temperature heat and chemical corrosive substances, such as metal smelting furnaces, glass kilns, etc., it may be more suitable to choose high alumina bricks, because high alumina bricks have better performance at high temperatures: thermal shock resistance and corrosion resistance. If the kiln operates at a lower temperature and does not require particularly high fire resistance, such as a brick kiln, etc., T3 clay bricks may be a more economical and suitable choice. Process requirements: If the process in the kiln requires special treatment of the product, such as high-temperature calcination, chemical reaction, etc., the stability and durability of the material need to be considered. In this case, high-alumina brick may be more suitable because of its higher resistance to thermal shock and erosion. If the process requirements in the kiln are not high and only general firing or heating is performed, T3 clay bricks may be a more economical and suitable choice. Budget: Considering budget factors,...
Aluminum chromium amorphous refractory materials for plasma incinerators This technology uses thermal spraying technology to spray it directly to the surface of aluminum chromium bricks to protect the aluminum chromium bricks of the furnace wall from further eroded, which greatly extends the service life of the refractory material of the working layer, improves the plasma incineration furnace, work rate. It has the characteristics of high bonding strength with the original brick lining refractory materials, wear resistance, earthquake resistance, peeling resistance, strength, and durability, construction is not affected by seasonal climate and temperature, and is fast and convenient. The main innovation points are 1. The main raw materials are based on jade and chromium-oxide microfilming. 2. Adopt a new composite binding agent, so that the material has a good attachment performance, the rebound rate is low, and the loss of the material in the construction. 3. At the same time, it is ensured that the aluminum-chromium amorphous refractory material has a higher melting point during use and that the aluminum-chromium amorphous refractory material does not peel or peel during the heating process. The technical achievements of this project overall increased the use of refractory materials for the kiln working layer, ensured...
White corundum is a high-purity alumina ceramic material. Its production process usually includes the following steps: Raw material preparation: Select high-purity alumina powder as raw material. These alumina powders are usually prepared by chemical methods, metallurgical methods, or high-temperature calcination methods. Ingredients and Mixing: The selected alumina powders are mixed in specific recipe proportions. During the mixing process, some auxiliaries or additives, such as binders, thickeners, etc., can be added to improve the molding performance and processing performance of the material. Molding: The mixed powder material is passed through a molding process, such as pressing, injection molding, or extrusion molding, to form a white corundum body with the required shape and size. The choice of molding method often depends on application requirements and product design. Sintering: After the white corundum body is formed, it needs to be sintered at high temperatures. During the sintering process, the white corundum body is placed in a high-temperature environment, usually between 1900°C and 2200°C, for continuous heat treatment. During this process, alumina powder particles are combined and rearranged to form a dense structure. Finishing and surface treatment: The sintered white corundum body can be finished and surface treated, such as cutting, grinding, polishing, etc.,...
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