finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
(current
topics)
topic 382

Want system to recover and purify phosphoric acid from aluminum bright dipping


(1996)

We presently use large quantities of phosphoric acid in our bright dip process. We recover much of the acid dragged out of the process tanks in recovery rinses, and sell the recovered dilute acid to other firms. We are interested in a system to purify and re-concentrate the phosphoric acid so that we can reuse it ourselves. Can anyone recommend a manufacturer or lend some advice as?

Thank you

Bob B [last name deleted for privacy by Editor]


(1996)

Way back in the good old days (1971?) I worked as a lab tech in an Aluminum finishing shop. The bright dip rinses were run through a vacuum evaporator, the condensed distilled water was reused to rinse and the recovered phosphoric/nitric concentrate went back into the bright dip. Running the evaporator was quite an experience for a college junior who had to climb a 20 foot tower to set up the vacuum, cooling, and heating valves and controls. I assume if you talk to any of the four or five vacuum evaporator manufacturers out there that they have probably automated the process quite a bit.

bill vins
Bill Vins
microwave & cable assemblies
Mesa (what a place-a), Arizona 



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.