Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1987-05-16
1989-11-14
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
2041824, 204301, 204DIG13, 210652, 210655, C02F 146, C02F 144, B01D 1302, B01D 1300
Patent
active
048805114
ABSTRACT:
A process and an apparatus for recovering a precious metal compound, in which the precious metal compound is separated from impurity metals by use of a reverse osmotic membrane, and the separated precious metal compound is recovered in a concentrated state through electrodialysis employing anion-exchange and cation-exchange membranes, whereby the precious metal compound in a process liquid can be recovered efficiently. When the recovered precious metal compound is added in the as-is form to precious metal plating solution, it is possible to control the plating solution.
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Catalog: Heraeus PCH-C 70, (5 pages).
Ionics, (Recovery of Nickel Salts by Electrodialysis Reversal Process), (6 pages).
Electroplating Engineers of Japan Limited
Niebling John F.
Starsiak Jr. John S.
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