Patent ID: 7272895

Claim:
Cage drying—compacting apparatus for wastes, comprising: a cylindrical body and at least a pair of pressure plates; a peripheral wall of said cylindrical body consisting of heating longitudinal tubes, carrying a thermal carrier fluid, provided along a generatrix of the cylinder and spaced from each other to provide longitudinal slots for outlet of vapor but not for outlet of material, wherein steam generated by heating the wastes is discharged through the longitudinal slots between said heating tubes, said tubes being retained by plural retaining rings spaced from each other along a length of said tubes; said pressure plates being placed opposed to each other, operating as movable basis of said cylindrical body and acting as pressing pistons; further heat sources, provided inside the cage drying—compacting apparatus, all along its length, said further heat sources being comprised of at least one tube through which the thermal carrier fluid runs; means for inlet of the material to be subjected to treatment, in a position close to one of the two ends of the apparatus; and means for collecting the material subjected to the treatment, in correspondence of the opposed end.