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Refractory plastic and refractory castable are both important materials for high-temperature industrial kiln masonry and are mainly used for high-temperature industrial kiln masonry. Although both can be used in industrial kilns, there are great differences between the two in essence. So what is the difference between refractory plastic and refractory castable? 1. Different material forms Refractory plastic usually exists in the form of solids, powders, or granules. It needs to be mixed with water under certain conditions to form a plastic paste before construction; while refractory castable exists in the form of dry powder or granules. It needs to be mixed with water before construction to form a slurry, and then poured or sprayed. 2. Different material composition Refractory plastic is mainly composed of high-temperature anti-burning materials, fillers, and adhesives. It is a plastic material designed for high-temperature environments. It is usually used for insulation, thermal protection, and coating of thermal equipment such as furnaces, kilns, chimneys, etc. Refractory castables are usually mixed with refractory cement, refractory aggregates, and additives. They are a type of casting material used for high-temperature masonry, suitable for refractory masonry, filling, and repair in high-temperature environments. 3. Different uses Refractory plastics are mainly used for...
Grate bricks can improve the heat exchange efficiency and heat storage capacity of the heat storage chamber. To further improve the heat storage capacity and heat transfer efficiency of the heat storage body, the arrangement of grate bricks is very important. Usually, the grate bricks in the heat storage chamber have a specific order of arrangement. This aims to ensure uniform heat transfer and more effective heat storage. The grate stripe arrangement is a common arrangement of grate bricks in heat storage chambers. Its arrangement is mainly staggered in the vertical and horizontal directions to form a lattice structure like a chessboard. In this arrangement, the surface area can be increased to improve heat transfer efficiency and reduce heat waste. Another common arrangement of grate bricks in heat storage chambers is the stacking arrangement. It arranges that each layer of grate bricks will be slightly offset from the previous layer, forming a staggered arrangement effect. This arrangement can increase the heat storage capacity and improve the heat transfer efficiency. The arrangement of grate bricks in the heat storage chamber affects the heat storage capacity and heat transfer efficiency of the entire heat storage chamber. The specific arrangement method will vary...
In modern industrial production, high-temperature industrial kilns are indispensable. They play a key role in smelting and production. The construction of high-temperature kilns is inseparable from refractory castables. Its main function is to protect the inner wall of high-temperature equipment from high temperature, corrosion, and wear. It also has good thermal conductivity and mechanical strength. Today, the editor will take you to understand the use of refractory castables in high-temperature kilns in various industries. In the metallurgical industry, refractory castables are often used for the lining of smelting equipment such as aluminum melting furnaces, open furnaces, alloy furnaces, converters, arc furnaces, and smelting furnaces. The use of refractory castables can protect the furnace walls and furnace bottoms that need to contact with high-temperature media and avoid high-temperature erosion and severe corrosion and wear. The use of refractory castables can effectively extend the service life of high-temperature smelting furnaces and improve production efficiency. In the cement industry, in cement kilns, the temperature of clinker burning can reach hundreds of degrees Celsius or even higher, which places extremely high demands on the lining materials of the kiln. Using refractory castables as kiln linings can effectively reduce kiln wear and corrosion, extend the...
Refractory castables are commonly used refractory materials for the lining of kilns in the thermal industry. They are widely used in the construction and maintenance of high-temperature kilns, ironmaking furnaces, glass kilns, and other equipment. Correctly selecting suitable refractory castables is the premise for ensuring the stable operation of the kiln, and it is also the key to improving the overall service life of the kiln. So what are the selection tips for using refractory castables to choose suitable refractory castables? 1. Determine the working environment and conditions of the kiln When selecting refractory castables, first determine the working environment of the kiln, such as working temperature, working medium, thermal shock resistance, chemical erosion resistance, etc. After understanding the working environment of the kiln, select the appropriate refractory castable. 2. Determine the material of the refractory material The main raw materials of refractory castables include alumina, silicate, silicon carbide, etc. It is crucial to select suitable refractory materials according to the use environment and requirements. For example, in high-temperature environments, alumina refractory castables usually have better high-temperature resistance; while silicon carbide refractory castables are suitable for occasions with high requirements for chemical corrosion resistance. 3. Consider the performance of refractory...
After pouring, refractory castables need to be hardened and baked before they can be used. How many days does this process usually take before they can be put into use? When using refractory castables for equipment lining or repair, the curing and use time after pouring is an important issue in project implementation. First, we want to understand the construction process of refractory castables. After the refractory castables are poured, they need to go through a hardening process. After the initial hardening is completed, the casting body needs to be de-molded. After demolding, the refractory castables need to be baked before they can be put into use. This is a process that refractory castables need to go through before they can be put into use. Next, I will briefly tell you about the time of these processes of some common refractory castables. The process from pouring the refractory castable to hardening and demolding generally takes 36-48 hours, which is the hardening to demolding time of some common refractory castables. After that, it needs to be cured for some time before it can be baked. The curing time is generally 3-7 days. The refractory castable that has been cured needs to...
High-aluminum castable is a kind of high-aluminum refractory material frequently used in metallurgy, building materials, glass, and other industries. Its refractoriness directly affects the stability of the production process and the guarantee of product quality. The refractoriness of 75 high-aluminum castable is one of the focuses of attention in the industry. 75 high-aluminum castable mainly refers to refractory castable with an alumina content of more than 75%. This castable is widely used in the lining of high-temperature industrial equipment such as metallurgical furnaces, converters, electric furnaces, glass kilns, etc. due to its excellent refractoriness. Under normal circumstances, the refractoriness of 75 high-aluminum castable is above 1650℃. This temperature range just covers the working temperature of most high-temperature industrial equipment, ensuring its stability and durability in high-temperature environments. Although 75 high-aluminum castable can reach more than 1650℃, its refractoriness is often affected by factors such as material formula, production process, construction method, and use conditions. Therefore, when selecting and using it, it is necessary to make comprehensive considerations according to the specific situation. Therefore, when choosing a supplier of 75 high-aluminum castables, you also need to consider their production process level, quality control capabilities, and after-sales service. Only by choosing a...
Refractory castables are an indispensable material in constructing high-temperature industrial kilns and furnaces. There are many types of refractory castables on the market, so there are also differences in classification. Some are classified according to composition, some according to kilns, and some according to applications. Therefore, we often see a lot of classified articles, but no matter how to classify, refractory castables need to be reasonably selected according to the specific situation of use. Today, the editor will briefly introduce the classification of refractory castables from the main components of refractory castables. 1. Silicate refractory castables Silicate refractory castables are the most widely used type, mainly based on silicates, supplemented by appropriate amounts of clay, aluminates, and other additives. Silicate refractory castables have high erosion resistance and high-temperature resistance and are suitable for lining and masonry of high-temperature kilns, converters, electric furnaces, and other equipment. 2. Aluminate Refractory Castables Aluminate refractory castables are another common type, the main component of which is aluminate materials, such as high-aluminum glass slag, iron-aluminum slag, etc. Aluminate refractory castables have excellent refractory and corrosion resistance and are suitable for the selection of refractory materials in high-temperature processes such as metallurgy and steelmaking. 3. Silicon...
Casables are mainly divided into castables for ordinary buildings and refractory castables for high-temperature kilns. They are amorphous materials. Ordinary castables for building houses usually refer to materials cast in the construction of building walls, which are usually not refractory. Refractory castables are a kind of castables used for the construction of high-temperature kiln linings. There are many types of them. Today, the editor will take you to understand what refractory castables are. Refractory castables are usually composed of refractory aggregates, powders, and binders. However, sometimes to improve the refractory properties of refractory castables, various refractory raw materials are added to them, such as stainless steel fibers, inorganic fibers, corundum, and other refractory materials with refractory properties to improve the refractory properties of castables, to ensure that they can work normally during the operation of high-temperature kilns. There are many types of refractory castables. Generally, there are two main types of refractory castables in the use of high-temperature kilns: lightweight thermal insulation castables and heavy refractory castables. Lightweight thermal insulation castables are divided into clay and high-alumina according to the raw materials, such as lightweight acid-resistant castables, lightweight alkali-resistant castables, etc. There are many types of them. We generally look...
The permanent layer castable is a high-performance refractory material made through strict processes. It uses high-quality raw materials and undergoes multiple processes such as high-temperature calcination, crushing, screening, and grinding to ensure that its quality and performance meet the standards. In the batching process, a reasonable aggregate particle size ratio is carried out, and imported high-temperature resistant binders, zircon powder, beryl powder, anti-cracking agents, and anti-seepage agents are added, and the mixture is made by fully mixing. These steps and material selections make the permanent layer castable have better performance in terms of refractoriness, slag resistance, erosion resistance, and thermal shock resistance. A refractory material mainly used in kiln transfer bags in the steel industry. In this scenario, it exhibits many excellent characteristics: resistance to erosion by molten steel and molten iron, strong resistance to extreme cold and heat, high softness, strong impact resistance, high load softening temperature, high high-temperature compressive strength, high high-temperature flexural strength, good slag resistance, etc. Therefore, it is widely used in various large and small transfer ladles such as molten iron ladles, ferrosilicon ladles, tundishes, and linings of spheroidizing ladles. The excellent performance and reliability of permanent layer castables provide important support and guarantee for...
Refractory bricks are a type of refractory material used for the main body of high-temperature industrial kilns. They play a vital role in high-temperature equipment such as kilns, furnaces, chimneys, etc. So, what are refractory bricks made of? This is a question that many people want to know. Today, the editor will take you to learn about it. From the perspective of the more commonly used refractory bricks on the market, the current common refractory bricks mainly include high-alumina bricks, clay bricks, carbon-containing refractory bricks, zirconium-containing refractory bricks, corundum bricks, chromium-containing refractory bricks, magnesium-containing refractory bricks, etc. Different types of refractory bricks have different compositions, and the raw materials are a variety of refractory materials, including alumina, silicates, silica, magnesium oxide, etc. These raw materials are usually processed by mixing, grinding, molding, and other processes to form blanks. High alumina bricks generally use bauxite as the main raw material, and then add bauxite clinker powder and fine powder, as well as a certain proportion of kyanite powder, and use pulp liquid as a binder. It is a kind of aluminum silicate refractory material, the main component of which is Al2O3. Among them, Al2O3 content greater than 48% can be called...
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