Patent ID: 8807070

Claim:
An improved rotor processor for coating particles, the processor having an expansion chamber, a stator mounted on the expansion chamber, a rotor mounted on the stator to define a rotor chamber, the stator being removable from the expansion chamber such that particles to be coated are loadable onto the rotor whereafter the stator is reattached to the expansion chamber, a gap between a peripheral edge of the rotor and an interior cylindrical surface of the stator through which air flows upwardly during operation of the processor so as to create a circulating bed of the particles in the rotor chamber, and a spray gun extending through a wall of the stator adjacent the rotor to spray a liquid coating material onto the circulating bed of particles, the improvement comprising: a powder feed system connected to the wall of the stator adjacent the rotor to direct powdered coating material into the rotor chamber and onto the circulating bed of particles; the powdered coating material being a different material than the particles being coated; and the powder feed system being spaced circumferentially apart from the spray gun on the stator wall, so as to define spaced apart liquid and powder coating zones through which the particles pass for coating with the liquid and powdered coating materials.