Technically related indicators of activated alumina

The first is the appearance of activated alumina. Activated alumina is mostly white spherical and is a porous particle. However, the particle size is relatively uniform, the surface is smooth, and the entire The mechanical strength is also relatively high. The main thing is that it is very hygroscopic. It will not expand or crack after absorbing water, and always maintains its original shape. It is not only non-toxic and does not stink, it is insoluble in ethanol and water. For fluorine It has strong adsorption properties and is mainly used in areas with high fluoride to remove fluorine from drinking water.