Abstract: A method of processing a highly viscous material comprises the steps of spinning the material in a homogenizer to reduce it to a creamy fluent consistency, flowing the creamy material wholly by gravity down into an upper centrifuge stage, centrifuging the creamy material in the upper centrifuge stage into a solids fraction and a liquid fraction, flowing the solids fraction wholly by gravity down into a lower centrifuge stage, and centrifuging the solids fraction in the lower centrifuge stage. These steps can all take continuously with the material being fed in at one end and the solid and liquid fractions obtained at the opposite lower end. Prior to spinning the material a liquid is added to it to reduce its viscosity and increase its homogeneity. This liquid can be the recirculated liquid fraction obtained in the first centrifuge stage. In accordance with this invention the recirculated liquid fraction is heated to 40.degree. C. to 70.degree. C. before introducing it into the homogenizer.

Abstract: The process for recovering vegetable oleaginous substances from oil-containing natural substances comprises a series of continuous combined pressing and extraction steps to increase and simultaneously to guarantee a high quality product for different kinds of natural substance starting materials. This is accomplished by subjecting the natural substances, conditioned and comminuted if necessary, after mixing with a solvent phase containing some oil to an intensive processing, mixing and extraction in the shear field of at least one rotor-stator unit and subsequently feeding the resulting liquid phase, through a filter if necessary, to a distillation column. The solid phase is extracted in successive stages until a residual oil content of 1% is reached and the solvent is fed back to a solid phase in a counterflow. The process as defined in my invention is universally applicable to all fat and oil-containing natural substances using suitable fluid extraction means.