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1. 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 higher temperatures but has a relatively low operating temperature range. Application: Refractory mud is often used for repairing, patching, plugging leaks in high-temperature equipment, and building furnace walls, furnace roofs, and other parts. 2. Refractory Cement Composition: Refractory cement is mainly composed of refractory stone, high alumina stone, and other primary materials and a certain proportion of binder. Features: Refractory cement has high high temperature resistance and corrosion resistance. It is a structural refractory material, suitable for directly building the overall structure of high-temperature equipment, and has good compressive strength and stability. Application: Refractory cement is often used to build the overall structure of furnace bodies, kilns, furnaces, and other high-temperature equipment, such as furnace walls, furnace bottoms, etc. 3. Refractory Castables Composition: Refractory castables are composed of refractory aggregates, binders, and water-adding agents. The refractory aggregates can be high-aluminum aggregates or silicon carbide. Features: Refractory...
There are certain differences between steel fiber castables and steel fiber wear-resistant castables, because adding a certain proportion of silicon carbide to the wear-resistant castables enhances the strength and wear resistance of the castable materials, and greatly improves the heat resistance of the castable materials. vibration stability. Steel fiber castables add a certain proportion of steel fibers to low-cement refractory castable materials, so there are certain differences between these castables. 1. The similarities between steel fiber castable and steel fiber wear-resistant castable The two casting materials are similar in that they both have added steel fibers, which provide good toughness and tensile resistance. However, the increase in wear resistance and corrosion resistance of silicon carbide added to wear-resistant materials is different from that of ordinary steel fiber materials, which also need to be used in special parts of the kiln lining to a certain extent. Both castables are constructed by adding a reasonable proportion of water during the construction process. By pouring the mold into the construction site, using a vibrator for reasonable vibration, slurry discharging, compaction, and demoulding, it is put into use after maintenance and baking. 2. The difference between steel fiber castable and steel fiber wear-resistant castable...
Thermal storage balls are widely used in petroleum, chemical, ceramics, environmental protection, and other industries as grinding media, proppant, filler, catalyst, catalyst carrier, etc. The uses of thermal storage balls are mainly related to their characteristics. Products vary according to use, content, size, indicators, etc. Now let us briefly talk about common uses. To prevent excessive heat loss during the production of high-temperature kilns, people have adopted a variety of methods to preserve heat well. The use of heat storage balls is one of the effective measures because it can not only absorb heat well but also maintain it for a long time. The most important thing is that it can transfer the stored heat energy to other substances promptly. The ball is small and has a strong ability to withstand pressure. After long-distance transportation, the basic mountain will not be damaged, effectively solving the transportation problems that people worry about. The wide application of heat storage balls is mainly due to its many advantages of convenient production. Generally, substances melt under high-temperature conditions, and heat storage balls have a strong ability to withstand high temperatures and will not melt or deteriorate. The advantage of not undergoing chemical changes in...
Glass melting furnace is a thermal equipment composed of refractory materials. The efficiency and service life of a glass-melting furnace largely depend on the variety and quality of refractory materials. The development of glass manufacturing technology depends largely on the improvement of refractory material manufacturing technology. Therefore, the reasonable selection and use of refractory materials in the design of glass melting furnaces is crucial. To achieve this, we must master the following two points: the characteristics and applicable parts of the selected refractory materials and the use conditions and corrosion mechanism of each part of the glass melting furnace. The quality of furnace refractory bricks is of great significance to improving the output and quality of glass products, saving fuel, extending the service life of the furnace, and reducing glass production costs. Bad refractory bricks not only limit the operating temperature of the furnace, but also seriously damage the quality of the glass, causing defects such as stones, streaks, bubbles, and lack of coloration, which greatly affects the productivity of the furnace. Commonly used refractory materials for float glass melting furnaces include shaped and unshaped refractory products: 1. Silica brick; 2. Clay bricks; 3. High alumina bricks and silica; 4....
Two main factors cause damage to the cast material of the permanent lining of the ladle. First, repeated use produces excessive cracks. This is caused by the excessive shrinkage of the pouring material itself or the excessive linear shrinkage of the pouring material. The cracks expand after repeated use; when pouring in sections, the pouring material is not integrated at the joints, resulting in horizontal cracks. Cracks and cracks expand during use; the asbestos board near the steel shell has gaps after repeated use, releasing permanent lining stress and expanding cracks. Second, surface damage occurs due to insufficient strength of the casting material when disassembling the can. A comparative test of different water addition amounts on low-cement high-aluminum permanent lining castables found that: As the amount of water increases, the porosity of low-cement high-aluminum castables shows an upward trend, and the bulk density shows a downward trend, thereby reducing the compressive strength and flexural strength of the castables. Through multiple comparative tests, it can be seen that as the amount of water added increases, the shrinkage rate of the castable material line increases significantly, which will expand the shrinkage cracks produced during the use of the castable material. When the...
In principle, high-aluminum refractory balls cannot be watered, because watering will reduce the strength of the refractory balls. Reducing the strength will naturally affect the service life. However, the high-aluminum refractory balls currently shipped from the factory are slightly sprinkled, because the refractory balls just out of the kiln must be packed in ton bags for delivery or storage. However, after the refractory balls are sintered at high temperature since the tunnel kiln for burning refractory balls is shorter than the kiln for burning high-alumina bricks, the refractory balls will be hot when they first come out of the kiln, and the packaging will burn out the outer packaging, so there will be a slight sprinkle of water. This makes it easy to load large bags. However, it is not allowed if the water pipe directly sprays water onto the high-aluminum refractory sphere. This will reduce the strength of the refractory sphere and may cause cracking and affect the service life. To increase the weight, some unscrupulous salesmen increase the weight of the refractory balls by sprinkling water for profit so that the refractory balls cannot be thrown underground and cause breakage, so special attention should be paid to this...
Special-shaped refractory bricks are a common shaped refractory product. Compared with standard refractory bricks, they are refractory bricks with unconventional shapes. Special-shaped refractory bricks of various shapes and materials can be produced according to user needs. Today, the editor of Xinhongji Refractory will explain the special-shaped refractory bricks from several aspects: let you understand the standard-shaped refractory bricks and the special-shaped refractory bricks. 1. Special-shaped brick material The materials of special-shaped refractory bricks can be customized according to user needs, such as clay special-shaped bricks, high-aluminum special-shaped bricks, aluminum-carbon special-shaped bricks, magnesia-carbon special-shaped bricks, corundum special-shaped bricks, etc. The specific material still depends on in terms of user needs. According to the refractory material standards, for high-quality, high-aluminum special-shaped refractory bricks, the ratio of their overall dimensions (the ratio of the minimum size to the maximum size) is within the range of 1:5; and they have no more than 2 concave corners (including High-alumina refractory bricks with arcuate concave corners included), or with an acute angle of 75°, or with no more than 4 grooves. 2. Special-shaped brick shape Special-shaped bricks are refractory bricks with complex shapes. It is also a general term for refractory bricks of various shapes. Therefore,...
The regenerative ball is a kind of refractory material that can store and release energy, which is mainly used in hot blast stoves, heating furnaces, and smelting furnaces in the metallurgical industry. It can support and cover the catalyst in the reactor in the furnace. Function, It covers the top of the catalyst and can effectively buffer the impact of liquid and gas on the catalyst, thereby improving the distribution of liquid and gas in the reactor. Therefore, the role of the heat storage ball in a high-temperature kiln is also very important. However, if it is in contact with the flame for a long time, the heat storage effect of the heat storage ball will decrease over time. The decrease in the heat storage effect will also cause the coke ratio to increase. High, and long-term use of the heat storage balls will cause bonding, which will lead to poor air permeability of the hot blast furnace, high wind resistance, reduced blast furnace air inlet volume, and reduced blast furnace output. Therefore, we must regularly check the heat storage balls in the high-temperature kiln. Replace it, but how often should the heat storage ball be replaced? According to the...
There are many types of refractory bricks, including high alumina bricks, lightweight insulation bricks, clay bricks, etc. However, in terms of size, there are many sizes of refractory bricks. The general standard size of refractory bricks is 240mm*115mm*53mm. There are also Other less commonly used sizes, although the sizes are different, are all boxy. Special-shaped bricks generally refer to refractory bricks of different shapes that are irregular in shape and customized according to the specific needs of use. It is also a type of refractory brick, but its shape is irregular compared with ordinary refractory bricks. The difference between refractory bricks and special-shaped bricks 1. Different shapes The shapes of special-shaped bricks are all kinds of strange, and they are generally customized according to the needs of on-site use, such as trapezoidal, round, etc. They require additional grinding tools, and generally, they are customized according to the specific shape by opening a mold, and refractory The shape of the brick is relatively fixed, and there is no need to open a separate mold. The shape is a relatively conventional rectangle, so there is a big difference between the two in appearance. 2. Different uses Refractory bricks generally have regular shapes...
A thermal storage ball is a kind of refractory sphere that is widely used in high-temperature kilns and can store and release heat. It is the filling material in the thermal storage system and is often used to store and release energy in the thermal storage system. To improve the utilization rate of heat in the thermal storage system. There are many heat storage ball manufacturers on the market now, but it is not easy to choose a regular manufacturer with good product quality. How to choose a heat storage ball manufacturer, First of all, we need to consider the qualification and reputation of the heat storage ball manufacturer. We need to choose those manufacturers with good reputations and rich experience. The heat storage balls produced by these manufacturers have passed professional testing and the quality is guaranteed. At the same time, these manufacturers also have perfect after-sales service, which can provide customers with timely technical support and after-sales service. Secondly, heat storage ball manufacturers have their production bases. We can go to the factory for on-site inspections. Generally speaking, through on-site inspections, we can roughly see the strength of the manufacturers, the production process, and the product quality of...
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