Klockner-humboldt-deutz Ag

Wolfgang Grigel

Hans Kellerwessel

Heinz-Dieter Waldhecker

Jakob Hinterkeuser

Raimund Zisselmar

John Rizzon

Kariheinz Passler

Waste materials, potentially following their comminution and potentially following their dying or, respectively, preheating, are burned in a cyclone kiln (buring cyclone or, melting cyclone) at extremely high temperatures above 1500.degree. C. with formation of a molten slag low in noxious substances and a hot exhaust gas in which latter the valuable substances and/or noxious substances contained in the waste materials volatilize, whereby dusts enriched with valuable substances on the one hand and, on the other hand, dusts enriched with noxious substances are respectively separately separated out of the exhaust gas by partial condensation.

Method for thermic disposal of waste materials

A roller crusher for receiving a harder to grind material, means mixing the harder to grind material with an easier to grind material and delivering the mixed materials to a ball mill for common grinding, separating the remaining coarse particles from material received by the grinder by a sieve or a cyclone, and recirculating the remaining the coarse particles to the ball mill.

Method and apparatus for the common grinding of two or more brittle

Growing community of inventors

Lohmar, Germany

Wolfgang Grigel