Separation disc, separation disc stack, and centrifuge having said seperation disc stack

A separation disc stack for a centrifuge, which is separator, wherein the separation disc stack comprises:

• a plurality of separation discs, each of the plurality of separation discs comprising
• a frustoconical shell-like main body having a smaller diameter and a larger diameter, wherein the main body includes an inner surface and an outer surface, and the main body includes at least one or more spacers,
• wherein radial outer projections are arranged circumferentially distributed on the larger diameter of the main body in a region of the one or more spacers, and wherein respective ones of the radial outer projections are arranged in a line or in extension of the outer surface of the main body, and
• wherein the separation disc stack is configured to be arranged in a drum interior of a drum of the centrifuge to clarify or separate a mixture of substances.

A centrifuge, which is separator or solid drum screw centrifuge, comprising:

• a separation disc stack having a plurality of separation discs;
• and
• a drum of the centrifuge having a drum interior, wherein the separation disc stack is arranged in the interior of the drum,
• wherein each of the plurality of separation discs comprises
• a frustoconical shell-like main body having a smaller diameter and a larger diameter, wherein the main body includes an inner surface and an outer surface, and the main body includes at least one or more spacers,
• wherein radial outer projections are arranged circumferentially distributed on the larger diameter of the main body in a region of the one or more spacers, and wherein respective ones of the radial outer projections are arranged in a line or in extension of the outer surface of the main body.