| 摘要 |
A vacuum dryer and method for drying granular or powdery material including at least one canister for holding said material being movable among a series of locations including material heating and vacuum drying locations, means for moving said canister among said locations, and means for directing heating air to a canister for delivery to said canister at a selected position on said canister for heated air passage though material in said canister in a selected direction corresponding to the selected position at which said heated air is delivered to said canister.
|
