The working process of a spice dryer can be simply described as: heating the air by burning fuel or using electricity, and then sending the heated air to the inside of the dryer through a circulating fan, so that it is evenly distributed in the drying room. Subsequently, the material is placed in a drying chamber, continuously heated and evaporated to obtain a dry product.

Spice dryer is a device specifically designed for processing plant materials containing fragrance components, such as flowers, leaves, branches, stems, etc. It mainly distributes hot air evenly to various areas of the drying room through a hot air circulation system, quickly evaporating the moisture inside the material, thereby achieving a certain dryness while maintaining the original fragrance. This type of dryer usually has a mesh belt structure design, which can dry a large amount of spices and provide sufficient contact between spices and hot air, thereby achieving uniform drying.