Apparatus and process to regenerate a trivalent chromium bath

Details Apparatus and process to regenerate a trivalent chromium bath Apparatus and process to regenerate a trivalent chromium bath

C - Chemistry, Metallurgy

25

D

362/41

C25D 3/06 (2006.01) B01J 39/04 (2006.01) B01J 45/00 (2006.01) C25D 21/22 (2006.01)

Patent

CA 2040809

A process for regenerating a plating bath comprising trivalent chromium cations (a trivalent chromium bath). The bath can be continuously, or more preferably, periodically operated with a cation exchange resin. The present process allows the selective removal of hexavalent chromium and divalent metal impurities from a chromium plating bath to enable the plating bath to operate with trivalent chromium.

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