Activated alumina spheres generally refer to g-Al2O3, which is usually obtained by heating and dehydrating the corresponding hydrated alumina-pseudoboehmite under high temperature conditions. Commercially available alumina is generally a hydrated pseudoboehmite, as determined by the specificity of the catalytic industry.
Comprehensive analysis of activated alumina balls - active alumina balls you don't know
Activated alumina spheres generally refer to g-Al2O3, which is usually obtained by heating and dehydrating the corresponding hydrated alumina-pseudoboehmite under high temperature conditions. Commercially available alumina is generally a hydrated pseudoboehmite, as determined by the specificity of the catalytic industry. Studies have confirmed that the structural properties of the pseudoboehmite determine the properties and uses of the final product. The pseudo-boehmite produced by different routes and methods has different water content, which gives the product ever-changing performance. After 20 years of research and development, the Shanxi Coal Chemical Institute of the Chinese Academy of Sciences has carried out several industrial scale-up experiments to form a complete set of technologies for industrial production with independent intellectual property rights. The series of technologies have the following characteristics: 1. Using a special synthetic process, the problem of unstable production is effectively solved. 2. The alumina produced is mainly used as a petrochemical catalyst carrier, and can also be used as a special material. 3, the reaction system is universal, only change the raw materials or operating process conditions to produce different varieties of products, including small pore alumina, mesoporous alumina and macroporous alumina. 4, a variety of raw materials can be used to prepare pseudo-boehmite, such as the production of aluminum hydroxide from the bauxite / coal gangue intermediate sodium aluminate solution, aluminum sulfate, aluminum hydroxide and the like. The raw materials that can be used in the process include: various inexpensive aluminum salts, sodium aluminate, carbon dioxide, and inorganic acids. The raw material source is wide, and cheap waste resources such as coal gangue can be used as a starting material, and alkali sodium or acid solution can be used to obtain sodium aluminate and aluminum salt.
The high-performance activated alumina ball can bring the following advantages in the unshaped refractory compounding: increase the density, fluidity, strength, increase the amount of secondary mullite, and reduce the water addition and porosity. In addition, activated alumina can also be used as a desiccant, with large water absorption, fast drying speed and regenerative (400-500K baking). The activated alumina refers to calcined alumina which is sufficiently finely ground and has a basic composition of α-Al 2 O 3 having a primary crystal size of 1 μm as a basic composition (20% to 90%). Formula: Al2O3, molecular weight (Molecular Weight): 101.96, CAS No.: 1344-28-1
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