Laboratory ball mills are cooled during operation by a gas flow ...
Ball mills which may comprise a housing (1), rotating carrier (2) for milling containers, a carrier drive (4), and a planetary drive, have a cooling system (6) to remove heat generated during operation which passes compressed gas air, through a hollow central drive spindle (66) and ducts (7484) to the vicinity of the container holders (32), before venting to atmosphere above the containers.