Abstract: A process for the separation of hydrocarbons from oil-containing solids comprises heating the oil-containing solids in one or several in-series operated continuous mixers by addition of hot solids to the oil-containing solids, thereby forming a mixed solids phase, wherein heating is conducted at a temperature at which most of a hydrocarbon fraction in the oil-containing solids is transferred into a gas phase in the mixer(s), wherein the mixer(s) are positioned horizontally or slightly inclined in a conveying direction and wherein the mixer gas phase is cooled simultaneously to a temperature below 400° C. before or upon exiting the mixer(s). A mixer for the process comprises a continuous mixer having at least one horizontal or in flow direction slightly sloped shaft, fitted with wear resistant stifling devices.

Abstract: Heavy oil derived from coal is diluted with organic solvent to a content of less than 10 weight percent of toluene-insoluble material. The mixture is then mixed with a non-aromatic solvent in a ratio of 1:3 to 5:1. With slow stirring of the heavy phase at a temperature of between 50.degree. and 200.degree. C., this mixture is separated into a pumpable TI-poor and a pumpable TI-rich fraction under the action of gravity, with a settling-surface load of up to 1 metric ton/m.sup.2 hour. No .beta.-resins are precipitated from these fluid fractions. No tacky, rubber-like sediment is formed from the TI-rich fraction. The fractions are distillatively separated from the solvents, which can be reused. The TI-poor fraction can be used, for example, as a carbon-black oil component or can be processed further to an impregnating agent for carbon shapes. Binders for carbon shapes or cokes are obtained from the TI-rich fraction.