Spray drying is the transformation of feed from a liquid or slurry
form to a dry powder. The feed is atomized into a chamber where the
resulting spray mixes with hot gas, which evaporates the liquid
component of the spray leaving dried particles. One of the main
indices of a spray dryer performance is product recovery. Material loss
in a spray drying system is due mostly to the adhesion of droplets to
the wall of the apparatus