Abstract: A colloid mill for reducing a particle size of particles having a rotor and a stator, which are arranged coaxially one inside the other. The colloid mill has a material inlet for introducing a suspension or emulsion on a first axial side and a product outlet for conducting away the suspension or emulsion on a second axial side. The rotor has a rotor grinding surface, and/or the stator has a stator grinding surface. The rotor grinding surface has a grinding tooth with a shearing surface and/or shearing edge, the cross-sectional surface of which grinding tooth tapers, in a plane perpendicular to the axis of rotation, wherein the cross-sectional surface has a first leg, which adjoins a base side and encloses an angle with the base side.

Abstract: The invention relates to a process for producing seed crystal suspensions based on melted fat. In particular, the invention describes a process for generating stable microdisperse cocoa butter crystal suspensions which have a high ?VI modification share and using the seed suspensions in the seed crystallization of fat-based suspensions containing disperse solid particles such as chocolate, chocolate-like masses, or the like. The invention also describes an apparatus for carrying out the process.

Abstract: A method of producing seed crystal suspensions based on melted fat, particularly for the production of stable microdisperse cocoa butter crystal suspensions with a high ?VI modification proportion and their use in the seed crystallization of suspensions containing disperse solids particles such as chocolate, chocolate-like masses or the like, with a proportion of high melting ?VI crystal modification being adjusted is described. The entire seed crystal content in the seed crystal suspension is produced directly in a mechanical/thermal treatment step in a shearing/dilatation field of flow. Fatty crystals formed on a wall are continuously scraped off and mixed with the fat melt.