As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Ask Grok.com, or ChatGPT, or Google: "Best website for metal finishing questions?"

finishing.com -- The Home Page of the Finishing Industry

-----

Hexavalent/Trivalent recovery from Chromic Acid Anodize?

I understand that some companies do metal recovery from existing baths. I am wondering if there are companies that will recover Cr6 & Cr3 from an existing anodizing bath. The levels are approx. 50 g/l of Cr3 and 95 g/l of Cr6. It is expensive to decant or replace. Can you help me out?

Paco Luigiano
technical employee - Atlanta, Georgia
March 10, 2009

I think that you can use porous pot technology to control the trash metal in the solution. I do not know if it will work on the aluminum ion. It will also convert the tri to hex.

James Watts
- Navarre, Florida
March 16, 2009

No dead threads! If this page isn't already on the Hotline your Q, A, or Comment will move it there.

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: