Andritz-Patentverwaltungs-Gesellschaft M.b.h.

Stephan Wild

Erwin Brunnmair

Klaus Steier

A process and an apparatus is disclosed for drying sludge or other materials, more specifically, sewage sludge, in which a mixture of base material and wet material is introduced to a drier and passing hot gas or hot air passed over the mixture. The process and apparatus by regulating the feed rate of the wet material (wet sludge) in relation to the exit temperature of the hot gas or hot air from the drier. In embodiments, the feed rate of material is adjusted to maintain a substantially constant temperature of the gas.

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Quirnbach, Germany

Stephan Wild