Device for drilling a crust of a cryolite bath that can be positioned on the periphery of an electrolytic cell

摘要

The present invention relates to a piercing device (6) comprising a jack (61) consisting of a body (611) and a rod (612)extending along a longitudinal axis (A-A') and a piercing component (62) connected to the rod (611), the piercing device being used to form a hole in a crust of alumina and solidified bath of an electrolytic cell by a to-and-fro movement of the piercing component (62) along a translational axis (T), characterized in that the longitudinal axis (A-A') is parallel to and separate from the translational axis (T).