A process and an apparatus for treating oil-containing metallic sludges and solids

摘要

The invention relates to a process for treating oil-containing and, in particular, heavy oiled, viscous metallic sludges and solids, which comprises dissolving the material to be treated into a thinly liquid mass by constant movement with an excess quantity of solvent and steam, after which volatile and fluid constituents are separated off, the solvent is separated from the water and from the oil to leave behind solids in a form which can be melted down. The invention also provides an apparatus for carrying out this process comprising a cylindrical drum mounted for rotation about a horizontal axis which is provided with a drive alternately rotating it in opposite directions and which contains a pipe system for delivering and removing solvents and steam and is provided with an opening for introducing and removing the material to be treated.