A spin flash dryer produces powder from feed, which is viscous or gelatinous in nature, paste or filter cake. The two step process involves disintegration of the feed and drying of the disintegrated feed. Depending upon the nature of the feed material, conventional arm design could be used for crystalline, non-sticky material or Acmefil's specially engineered rotating spin design disintegrator could be used to handle sticky and gelatinous materials.