Process for removing iron from tin-plating electrolytes

Details Process for removing iron from tin-plating electrolytes Process for removing iron from tin-plating electrolytes

1996-04-29

1998-07-28

Gorgos, Kathryn L.

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

205508, 205509, B01D 5942, C25B 100

Patent

active

057858330

ABSTRACT:
A method is provided for removal of ferrous ions from a tin-plating electrolyte containing stannous ions in a multi-compartmented electrochemical cell equipped to convert the ferrous and stannous ions to insoluble hydroxides. The hydroxides, in an essentially air-oxygen free environment, are separated by selectively dissolving the ferrous hydroxide in an acidic solution and the undissolved stannous hydroxide in the tin plating electrolyte.

REFERENCES:
patent: 4636288 (1987-01-01), Vaughan
patent: 5310465 (1994-05-01), Vaughan
patent: 5451323 (1995-09-01), Akao et al.

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