Colloid mill

A colloid mill for reducing a particle size of particles suspended in a first liquid, or a droplet size of a second liquid emued in a first liquid,

• having at least one rotor and at least one stator, which are arranged coaxially one inside the other,
• wherein the colloid mill has at least one material inlet for introducing particles, a liquid, a suspension or emulsion on a first axial side and at least one product outlet for conducting away the suspension or emulsion on a second axial side,
• wherein the at least one rotor has a rotor grinding surface facing toward the stator, and the at least one stator has a stator grinding surface facing toward the rotor,
• wherein at least one or more of:
• the rotor grinding surface has at least one grinding tooth with at least one or more of a shearing surface and shearing edge, wherein the cross-sectional surface of the grinding tooth of the rotor grinding surface tapers, in a plane perpendicular to the axis of rotation, in the radial direction toward the opposite stator grinding surface, wherein the cross-sectional surface has a first leg, which adjoins a base side, running in the circumferential direction, of the cross-sectional surface, points in the direction of rotation of the rotor, encloses an angle of 80°-100°, with the base side,
• and
• the stator grinding surface has at least one grinding tooth with at least one or more of a shearing surface or shearing edge, the cross-sectional surface of which grinding tooth tapers, in a plane perpendicular to the axis of rotation, in the radial direction toward the opposite rotor grinding surface, wherein the cross-sectional surface has a second leg which adjoins a base side, running in the circumferential direction, of the cross-sectional surface, wherein the second leg points counter to the direction of rotation of the rotor, and the second leg encloses an angle of 80°-100°, with the base side.