Suitable Material for Fluosilicic acid
Suitable Material for Fluosilicic acid
(OP)
Hi,
We have a Den Exit fan installed in super phosphate plant, the impeller is made in SANICRO 28 and has a limited life due to very aggresive corrosive medium. It contains 1% Fluosilicic acid, and approx 0.2% hydrofluoric acid. Air temperature would be in the range of 40 - 55C. Can anyone suggest what is the best material for this application for fabricated impeller which uses 6mm thick plates.
There are small amount of silica in the medium which causes erosion as well in leading edge of the blades.
regards
regards
We have a Den Exit fan installed in super phosphate plant, the impeller is made in SANICRO 28 and has a limited life due to very aggresive corrosive medium. It contains 1% Fluosilicic acid, and approx 0.2% hydrofluoric acid. Air temperature would be in the range of 40 - 55C. Can anyone suggest what is the best material for this application for fabricated impeller which uses 6mm thick plates.
There are small amount of silica in the medium which causes erosion as well in leading edge of the blades.
regards
regards





RE: Suitable Material for Fluosilicic acid
here you can find corrosion data, isocorrosion for Fluosilicic acid and hydrofluoric acid. is not easy to define what happens when the two acids are mixed.
Fluosilicic acid
http
http:/
hydrofluoric
http://
http
654 smo seems a good choice..
S
Corrosion Prevention & Corrosion Control
RE: Suitable Material for Fluosilicic acid
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