No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

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

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

sulfuric acid electrolyte gets crystallized at heat exchanger

What can be the reason for crystallization of sulfuric acid anodizing electrolyte at heat exchangers (plate type) of an industrial anodizing installation?
Parameters:
Concentration: 160 g/l H2SO4 - Al (+3) : 16 g/l
Chiller water temp: 7 °C
H2SO4 electrolyte temp: 16 °C

Erol Deniz
Aluminum anodising - Istanbul, Turkey
2006

You are probably seeing aluminum sulphate crystalize out as your aluminum content is a bit high and it is less soluble at low temperatures.

James Watts
- Navarre, Florida
2006

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: