Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing inorganic compound
Patent
1999-10-14
2000-09-26
Phasge, Arun S.
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing inorganic compound
205512, 205536, 210695, C25B 116
Patent
active
061238260
ABSTRACT:
The present invention relates to a method to control of the presence of nickel and/or iron in a caustic solution using at least two magnets to remove about one third of the nickel and/or iron present in a caustic solution. The method involves passing cell liquor through a first magnet at a flow rate of about 600-900 gallons per minutes removing a significant amount of nickel and/or iron from the cell liquor forming first fluid, then evaporating a significant amount of water out of that first fluid and raising the temperature of that first fluid to above 330 F., then cooling the more concentrated caustic solution to a temperature of between about 75 and 100 F. forming a cooled solution, passing the cooled solution through a second magnet and removing additional nickel and/or iron forming a second cooled solution, filtering that second cooled solution forming a filtered solution, passing the filtered solution through an optional third magnet to remove remaining nickel and/or iron forming a substantially metal free caustic solution .
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Hegeman John William
Pickle Todd Richard
Sulik Gary Lee
Buskop Wendy K.
Phasge Arun S,.
Pioneer (East) Inc.
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