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

HomeFAQsBooksHelpWantedAdvertiseForum
(current
topics)
topic 1098

Removing colloidal tin from acid tin plating bath


(1998)

We have a long serving acid tin solution which has reached the consistency of thick broth due to the build-up of colloidal tin. We have tried various flocculants to settle the suspension, so that we can decant and use the solution, with little success. Has anyone any suggestions on methods to avoid disposing of the entire solution and starting again.

bob lynch
Bob Lynch
     plating company
Sydney, Australia



(1997)

Bob,

Enthone OMI has a product to clarify the solution. I understand that it works quite well. As I remember, the end cost of everything was about equal to replacing the bath. We only had a 30 gal tank. The economy may be better for a large system.

James Watts
- Navarre, Florida


(1998)

Mcgean-rocho also has a good product for this application.

sara michaeli
sara michaeli signature 
Sara Michaeli
chemical process supplier
Tel-Aviv, Israel



(1997)

For high-speed application, this pbm got so bad that I had to resort to building a continuous centrifuge in-line after the pump and before the filter. It doesn't settle at one g force, but begins to settle at three g's, therefore design it accordingly and build it solid.

Regards,

Dave Kinghorn
Dave Kinghorn
Chemical Engineer
SUNNYvale, California




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.