Chisel for a crust breaking facility

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

1982-09-23

1983-11-22

Purser, Ernest R.

Mining or in situ disintegration of hard material

Miscellaneous

204245, C25C 314

Patent

active

044164890

ABSTRACT:
A chisel for a crust breaking facility for breaking through the solidified crust of electrolyte on an electrolytic cell, in particular 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.

REFERENCES:
patent: 560500 (1896-05-01), Hengen
patent: 1174433 (1916-03-01), Mowlds
patent: 1880623 (1932-10-01), Williams
patent: 2423787 (1947-07-01), Mosena et al.
patent: 3663411 (1972-05-01), Springer
patent: 3681229 (1972-08-01), Lowe
patent: 4280573 (1981-07-01), Sudnishikov et al.

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