PROCESS FOR RECOVERING METALS FROM A STREAM RICH IN HYDROCARBONS AND CARBONACEOUS RESIDUES

摘要

A process for recovering metals from a stream rich in hydrocarbons and carbonaceous residues by means of a treatment section characterized in that it comprises the following steps : ° sending said stream to an extraction by mixing said stream with a suitable hydrophilizing agent, i.e. being capable of removing the hydrophobic qualities of said stream; ° sending the mixture consisting of said stream and said hydrophilizing agent to separation, separating a liquid phase containing most of the hydrophilizing agent and hydrocarbons dissolved from a "solid" phase; ° preferably subjecting the "solid" phase separated to drying effected at a maximum temperature of 3500C in order to remove the medium- light hydrocarbon components from the "solid" phase; ° sending the "solid" phase separated, preferably dried, to leaching with an alkaline solution in the presence of air and/or oxygen and possibly in the presence of an emulsifying agent or its precursor; ° sending the leached mixture to separation, separating the solid residue from the liquor.