Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide)

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Sulphuric Acid Resistant Aloy/material That can also produce heat upto 300F (1 reply)

W
waleed
3 years ago
waleed 3 years ago

Dear All,

Can any one suggest me best alloy/Material that can be used in 60% concentrated sulphuric acid and sustain at 300-500 F temperature..?

our Industry Purpose,

usage of hot oil in tubes of that material to generate heat, this tube will be dipped in sulphuric acid solution for evaporation purpose. 

we have already used SS 316L, but this alloy get corrosion after 50% of concentration at 150F temperature. 

in Attached Pics you can see SS tubes used for above stated purpose. 

Capture
https://www.911metallurgist.com/wp-content/uploads/2021/01/Capture.png
J
Jorge
3 years ago
Jorge 3 years ago
Like
1 like by David

I think you can evaluate the potential application 904L stainless steel, which is a super-austenitic stainless steel. This kind of steel includes the presence of copper to greatly improved resistance to strong acids, such as sulphuric acid and phosphoric acid. It is important to keep in mind that diluted solution of sulphuric acid is more aggressive than concentrated sulphuric acid.

Other alternative is to use tantalum, whose properties provide extreme corrosion resistant in aggressive media such hot sulphuric acid solution. This material should not be used  with hydrofluoric acid.

Obviously, it is important to perform some corrosion tests to take a decision.

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