Patent ID: 6918991

Claim:
A method for making a dry powder blend comprising: (a) spraying an emulsion, solution, or suspension, which comprises a solvent and a bulk material, through an atomizer and into a primary drying chamber having a drying gas inlet, a discharge outlet, and a drying gas flowing therethrough, to form droplets comprising the solvent and the bulk material, wherein the droplets are dispersed in the drying gas; (b) evaporating, in the primary drying chamber, at least a portion of the solvent into the drying gas to solidify the droplets and form particles dispersed in the drying gas, the particles dispersed in the drying gas being a feedstream; (c) adding a dry powder material to the feedstream to form a combined feedstream; and (d) flowing the combined feedstream through an inline jet mill to deagglomerate or grind the particles and dry powder material of the combined feedstream, wherein the jet mill comprises a spiral jet mill or other fluid energy impact mill.