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topic 17720

Tin Drag-Out Recovery


Does anyone have practical experience with RO or Vacuum Evaporation for Tin MSA dragout recovery?

Bill Copping
- Niagara Falls, New York


I wouldn't recommend RO for a tin rinse because of the tendency for tin to oxidize and to precipitate as it is concentrated.

Vacuum evaporation would be a much better choice. I have some successful experience with fluoborate tin and tin-lead recovery using vacuum evaporation, but you must be sure that the addition agents are stabile at the temperature in your evaporator.

Lyle Kirman
consultant - Cleveland, Ohio


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