Chicken Manure and Animal Feed Rotary Drying Equipment Rotary Dryer. Product Overviews. Brief Introduction: Chicken Manure and Animal Feed Rotary Drying Equipment Rotary Dryer is used for drying sand, coal, sludge, coal slurry, brown coal, fly ash, gypsum, clay, Kaolin, grain (corn, wheat), mineral powder, slag, iron powder, mill scale, sawdust/woodchips, chicken manure, feed etc.