Etching and descalling in metall industry

From Efficiency Finder
Jump to: navigation, search

Back to EFFICIENCY FINDER FOR METAL INDUSTRY



  • Etching and descalling flowsheet


Etching and descalling flowsheet1.jpg

Literature: BAT for Surface Treatment of Metals & Plastics, 2006


Etching and descalling flowsheet2.jpg


Etching and descalling flowsheet3.jpg


  • Typical parameters of the process
Process Temperature [°C] Heat transfer medium Residence time Chemicals Concentration Details Literature
Etching of aluminium Sodium hydroxide (some fluorides are added if necessary) BAT for the surface treatment of metals and plastics, August 2006
Decorative etching of aluminium 40-90 Sodium hydroxide 4-10


  • Energy losses from the surface area of heated process solutions

LITERATURE: BAT for the Surface Treatment of Metals and Plastics, May 2005


Energy losses from the surface area of heated process solutions.jpg



Back to EFFICIENCY FINDER FOR METAL INDUSTRY