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A licorice root hot air drying line is a continuous drying system specifically designed for licorice roots and sliced licorice. Its core goal is to efficiently dehydrate while maximizing the retention of active ingredients such as glycyrrhizic acid and liquiritin, and ensuring the finished product has a natural color and uniform moisture content that meets standards.
Material Selection and Cleaning → Moistening → Slicing (2-4mm) → Uniform Spreading → Multi-Stage Hot Air Drying → Cooling → Screening → Packaging
Core Equipment and Working Principle
The mesh belt hot air dryer is currently the mainstream choice for large-scale licorice processing. Its working principle is as follows: materials are evenly spread by a feeder onto multiple layers of stainless steel mesh belts, and the mesh belts slowly move inside the dryer under the drive of the transmission device. The dryer consists of several independent units, each with independent hot air circulation. The hot air flow passes through the material layer from bottom to top or from top to bottom, completing heat and mass transfer.
Multi-stage temperature control is the key to licorice drying. The entire drying tunnel is usually divided into a preheating section, constant-rate drying section, falling-rate drying section, and cooling section. The hot air temperature and supply air volume of each section can be independently regulated, achieving staged temperature increase and gradient drying.
The mesh belt Chinese medicinal material dryer developed by Nanchong Shouchuang Technology adopts a unique 360° internal circulating air supply technology, which can precisely control temperature and humidity throughout the entire process. It is compatible with various forms of Chinese medicinal materials such as roots and rhizomes, flowers and leaves, and fruits, and is suitable for large-scale continuous production of varieties such as licorice, astragalus, and angelica. If you can provide the expected daily processing capacity and available heat source conditions, I can help you further sort out the specific equipment specifications and capacity matching plan.