Chisel for a crust breaking facility

Details Chisel for a crust breaking facility Chisel for a crust breaking facility

1980-09-05

1982-03-02

Williams, Howard S.

Mining or in situ disintegration of hard material

Miscellaneous

175390, 175407, 204 67, 204279, C25C 314, E21B 406

Patent

active

043175953

ABSTRACT:
Device and method for breaking open the solidified crust of electrolyte on an electrolytic cell, in particular a cell for producing aluminum. At least one projection is provided on the lower part of the shaft of a chisel used on a crust breaker. After breaking through the crust, the chisel is lowered further at least until the lowest projection or projections reaches the lower half of the crust.

REFERENCES:
patent: 1614287 (1927-01-01), Davis
patent: 3551308 (1970-12-01), Capitaine et al.

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