There are many types of desiccants, and not all of them can be reused. Desiccants can be roughly classified into two types based on their drying types: chemical reaction desiccants and physical adsorption desiccants.

Chemical reaction-type desiccants are a type of desiccant in which the raw material undergoes a chemical reaction with water vapor in the air to form another substance to achieve a moisture-absorbing effect. The drying process is irreversible, so such desiccants generally cannot be reused. Physical adsorption type desiccants such as silica gel desiccants and montmorillonite desiccants have well-developed adsorption pores inside their raw materials. Through these adsorption pores, they adsorb water vapor in the air and firmly lock it within. This type of desiccant has the characteristics of absorbing and releasing moisture, so it can be reused.

Method for reusing desiccants:

1) When exposed to the sun for a long time, the high temperature evaporates the moisture locked inside the desiccant. However, due to the insufficient exposure temperature, only a portion of the moisture can be removed, and the effect of repeated use will not be very good.

2) Through high-temperature baking, it can be baked at a temperature of 80-120℃, which can remove the moisture inside the desiccant to the greatest extent.