Various factors affect the cooling and drying process of material particles. The energy in air and particles and the amount of water in the particles and air directly affect the cooling and drying process. Heat and mass transfer methods are also used: conditions, convection, absorption, and adsorption Etc. significantly affect the cooling and drying process. The type of cooler used in the drying equipment and the heat and mass transfer method of the cooler design used will affect the cooling and drying process of the feed particles.
In addition, the cooling rate should not be too fast: a dry shell will form on the surface of the particles, which will hinder the migration of water from the particles and keep the particle core soft and moist. Once the particles with this soft and moist core reach equilibrium, the particles will become brittle and produce excessive fines.
