Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Utilizing plural distinct electrolytic cells where the cells...
Reexamination Certificate
2007-07-11
2011-11-01
Wilkins, III, Harry D (Department: 1723)
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Utilizing plural distinct electrolytic cells where the cells...
C205S363000
Reexamination Certificate
active
08048286
ABSTRACT:
A method of taking inoperative pot online using fuse in an aluminium manufacturing plant operating on electrolysis process is disclosed. The manufacturing plant comprises of plurality of electrolysis cells or pots connected in series. Some of the pots are kept off line during start up of the plant by shorting the risers of the non running pots to the cathode bus bar (31) by shorted joints (II). The method comprises, connecting fuse assemblies in parallel with the shorted joints; inserting insulating insert plates between the risers and the short circuit bus bars and securing the insulating insert plates to isolate the short circuit bus bars from the risers (14) such that the total rated current passes through the fuse assemblies. The fuse elements in the fuse assemblies melt within about 8 to 10 minutes, completely isolating the short circuit bus bars from the risers such that the risers now feed the current to the anode assemblies of the non running pot. Feeding of charge to the non running pot is the started, thus taking the non running pot on line.
REFERENCES:
patent: 4683047 (1987-07-01), Boivin et al.
patent: 4696730 (1987-09-01), Chaffy et al.
patent: 6551473 (2003-04-01), Gaillard et al.
Jagannathan Ramaswamy
Paranantham Divakaran
Bharat Aluminum Company Limited
Mendez Zulmariam
Rader & Fishman & Grauer, PLLC
Wilkins, III Harry D
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