Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989





-----

Methods to remove gypsum scale





2002

I'm looking the kind to remove scale formed of calcium sulfate ( gypsum )in to the heat exchanger tubes. the film has 1-5 millimeters .The internal diameter tube is 2 inch, 26 ft longitude; 1250 tubes. The appearance and hardness of the material is like ceramic. Actually we use to remove this scale water at high pressure, but has low efficiency.We have intended with some light acids but hadn't been possible.

Marco Antonio Acuña Medellin
- Monterrey, NL Mexico



2002

I would try a strong chelating material like tetra sodium salt of EDTA.

Geoffrey Whitelaw
Geoffrey Whitelaw
- Port Melbourne, Australia



2003

Dear Marco,

I need a bit more information. I think I have a solution.

Tim Hix
- Moseley, Virginia


none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages



(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

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:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact    -    Privacy Policy    -    ©1995-2023 finishing.com, Pine Beach, New Jersey, USA