Its core principle is to use heat energy to vaporize the wet content (such as moisture or solvent) in the material, and then take it away by air flow or vacuum pump to finally realize the dehydration and drying of the material. This process is widely used in industrial production to improve material stability, extend shelf life, facilitate transportation or prepare for subsequent processes such as crushing, mixing, forming.
Depending on the material characteristics and process requirements, drying equipment can achieve this in a variety of ways, such as:
Convection drying: The hot air is in direct contact with the material, taking away the water vapor.
Conduction drying: indirect heat transfer through the metal wall to avoid material contamination.
Radiation drying: using infrared or electromagnetic waves to heat the inside of the material.
Vacuum drying: Reduce the boiling point of water in a low-pressure environment to achieve efficient drying at low temperatures.
Heat pump drying: recovers waste heat, energy-saving and efficient, suitable for heat-sensitive materials.
