Who knows about ceramic fibers?

Ceramic fiber is a fibrous lightweight refractory material, which has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat and mechanical vibration resistance, so it is widely used in machinery, metallurgy, chemical industry, petroleum, ceramics, glass, electronics and other industries. In recent years, due to the rising global energy prices, energy conservation has become China's national strategy, and it is more energy-efficient than traditional refractories such as insulating brick and castable. Up to now, there are more than 200 large and small ceramic fiber manufacturers in China, but the production technologies of ceramic fibers with the classification temperature of 1425℃ (containing zirconium fiber) and below can only be divided into two types: spinning carpet and blowing carpet. Which is better? Which process is more suitable for carpet production? The technical analysis is as follows: 1. Fiber filament diameter: the spun fiber is relatively thick, generally 3.0-5.0m, and the spun fiber is generally 2.0-3.0m；; ; 2. Filament length: the spun filament is long, generally, the spun filament is 150-250mm and the spun filament is100-200 mm; 3. Thermal conductivity: spinneret is better than spinneret because its fiber is very thin; 4. Tensile and bending strength: the spun carpet is better than the spun carpet because its fiber is thicker; 5. Application of making ceramic fiber blocks: spun felt is better than spun felt because its fibers are thick and long. In the process of block folding, the spinning carpet is easy to break and tear, but the spinning carpet can be folded tightly and is not easy to be damaged, and the quality of block will directly affect the quality of furnace lining; 6. Application of vertical laying of large blankets such as waste heat boiler: spinning felt is better than spinning felt because its fiber is thick and long, its tensile strength is better and it is more durable; From the production history, the spinning production process was first born, but the single-line capacity is low, with an annual output of 1000- 1500 tons. With the requirement of improving production efficiency and the continuous exploration and research of production technology, a more advanced spinning production process was finally invented, and the production capacity of a single production line can reach 2-4 times that of the spinning process. Take the spinneret carpet production line of Japan's Isolet Company in Suzhou as an example, the annual output of single line is only/kloc-0.5 million tons, which is only a quarter of the former. Spinning technology has been accepted by the production giants and customers in most industries, so in recent five years, almost all new ceramic fiber production lines in China have adopted spinning technology. For example, the production line of Chennai United Fiber Company in China from June 5438 to October 2008 is spinning technology, and the main production line of Luyang Company, the largest ceramic fiber manufacturer in China, is also spinning technology. According to the relevant market statistics and analysis of the well-known domestic light insulation material sales and engineering service company Esway Refractory Co., Ltd., in recent five years, the main domestic steel and petrochemical projects, especially those requiring a large number of ceramic fiber blocks, almost all used ceramic fiber mats and blocks produced by spinning process. It is not difficult to see that most customers highly trust and choose the ceramic fiber produced by spinning process. Spinning fiber blanket also has its unique uses. If necessary, the fibers will be crushed and made into secondary processed products (such as vacuum molded products). ), spinning fibers are more easily mixed with other raw materials because of their finer fibers. So popular. Therefore, the ceramic fibers of spinning and spinning process have their own strengths, and customers should make full use of their strengths and avoid their weaknesses according to the actual application to achieve the best results. Of course, spinning carpet is far more suitable for use than spinning carpet. As far as the future development prospect is concerned, the total output of China's ceramic fibers will increase, and the new production line will still focus on spinning production technology. Relatively speaking, the production scale and the proportion of spinning carpets in the total market will gradually decrease. The production process of spinning blanket is more suitable for small-scale enterprises, especially those with small initial investment. The competition of spinning production technology in China market will be more and more fierce, which is definitely a good thing for consumers, because they can enjoy more and better products with less money. It is definitely a good thing for the development of related industries of thermal energy application in China, especially for energy saving and consumption reduction in industrial production.