A rotary cut tobacco drier, comprising a heated rotary drier chamber having one or more inclined paddles arranged to lift and then drop material therein to be dried as the chamber rotates. The chamber is provided with an air inlet to which air is supplied by a blower through a heater and a duct. The...http://www.google.com.au/patents/US4984374?utm_source=gb-gplus-sharePatent US4984374 - Rotary drier control by adjustment of air flow or air humidity
