VERFAHREN ZUR VERWERTUNG VON KOHLENWASSERSTOFF- UND ZUNDERHÄLTIGEN SCHLÄMMEN

摘要

Hydrocarbon-containing scale sludge processing, by dewatering and treatment in a combined drying/mixing/granulating unit to form a dry pourable hydrocarbon-containing product, is new. Processing of hydrocarbon- and scale-containing metallurgical sludges, involving multi-stage sedimentation and/or filtration treatment of hydrocarbon- and scale-containing waste water, comprises (a) dewatering the sludge to a certain residual moisture content; and (b) introducing the dewatered sludge into a combined drying/mixing/granulating unit where it is dried to a dry pourable product still containing the hydrocarbons.