Abstract: The present invention concerns a method and a device for processing calcinated carbon bodies such as anodes or cathodes for use in connection with electrolytic production of aluminum. The carbon bodies are processed using a rotating processing tool that includes a mainly circular disc with cutting edges mounted at its periphery. The cutting edges may be made of polycrystalline diamond (PCD) or an equivalent material. Thus, it is possible to create slots in calcinated carbon bodies in an efficient manner with low tool wear.

Abstract: The present invention concerns a method and a device for processing calcinated carbon bodies such as anodes or cathodes for use in connection with electrolytic production of aluminium. The carbon bodies are processed using a rotating processing tool (1) that consists of a mainly circular disc with cutting edges (12, 12?) mounted at its periphery. The cutting edges may be made of polycrystalline diamond (POD) or an equivalent material. With the present invention it is possible to create slots in calcinated carbon bodies in an efficient manner with low tool wear.

Abstract: A method and equipment with a processing tool for the processing of carbon bodies, such as formation of holes in calcined carbon bodies, in particular nipple holes in anodes for use in electrolytic cells for the production of aluminium. The equipment comprises a positioning device (2) with means for positioning and fixing the calcined carbon element (1) and a processing station (8) with at least one spindle (10) which is designed to rotate and which has a processing tool (9) with one or more cutting elements (40-45). The spindle can rotate about a horizontal axis and can be moved in three directions which are perpendicular to one another so that the axis of rotation of the spindle can be given planetary motion during processing. The processing tool can be enclosed by a sheath which may have a suction device.