Turbo-Dryer can be used to dry water-wet or solvent-wet materials through a wide temperature range without the need for vacuum. The gentle material-handling features and low exhaust velocities of the continuous, rotary tray dryer reduce fines formation and carryover in the exhaust. Products are dried uniformly to low moisture or volatiles levels. With an inert-gas-recycle system, virtually all of the evaporate solvent can be recovered for reuse. Other features include automatic operation, ease of cleanout and low horsepower/heat requirements. With the heat-recycle system, heat requirements have been as low as 1600 to 1700 BTU per lb of water evaporated.