Abstract: Product pieces (2) produced from old tires are thermally processed in a discontinually operated device (1). The product pieces (2) consist of a material compound, which comprises at least one material component which decomposes by heating, by mechanically moving and/or fluidizing the product pieces (2) in the device (1) and by heating to an material decomposition temperature via heated contact surfaces of the device (1). At this temperature the material compound decomposes in one or several solid matter material components and fluids, which can be taken out of the device (1) separately. A single component separation is made possible by the method and the use of the device. Environmental impact is mostly avoided.

Abstract: In a process for drying sewage sludge or sludges of similar consistency, use is made of a device (13) in which vapors arising during contact drying are introduced to at least one compression stage. This stage compresses the vapors to a higher pressure and impurities are separated therefrom. The cleaned and compressed vapors are introduced into the device (13) for contact drying as a heating medium. In this manner, the energy consumed inside the operated installation is used more efficiently to dry the sewage sludge and a considerably improved energy balance is thereby achieved.

Abstract: In a method for the cleaning of oil- and water-containing roll scale sludge, the roll scale sludge is introduced to a heatable treatment region 10 for a first drying step. In addition to the first drying step, a second drying step is provided for with which the roll scale sludge is subjected to a vacuum drying 14, 15. For this reason, the purification of the oil- and water-containing roll scale sludge is improved without additional auxiliary materials using only pure thermal energy in an effective manner which is applicable to large-scale commercial applications.