C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/203
C25C 3/14 (2006.01) B25D 17/02 (2006.01)
Patent
CA 1150188
A B S T R A C T A chisel for a crust breaking facility for breaking through the solidified crust of electrolyte on an electrolytic cell, in part- icular a cell for producing aluminum, is such that at least a part of the edge region on the bottom face of the chisel projects out beyond the other regions and is in the form of cutting edges. The bottom face of the chisel features no faces which are inclined outwards and would create outward directed forces as the chisel is forced through the crust. The chisel of the invention allows energy and investment costs to be reduced. - 1 -
359978
Friedli Hans
Gut Edwin
Haggenmacher Thomas
Maugweiler Gottfried
Sherman
Swiss Aluminium Ltd.
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