Equipment selection for high-concentration corrosion conditions
Thread Content
Seeking advice: For 98% nitric acid, ~110% sulfuric acid, and ~2% F ions, at a temperature of 140°C, what material should be used for the reaction equipment? Metal materials are not suitable for use; PTFE materials suffer from permeation in the presence of concentrated nitric acid and fluorine. The non-metallic material silicon carbide can only be used for external heaters. So what should be used as the material for containers? :L:L:L
It seems that silicon carbide is the only material suitable for such operating conditions; nothing other than silicon carbide will do.
First, is the composition of your medium as you have written it? If it’s written as you described, there’s nothing to worry about, because the medium you described cannot exist in reality; it’s merely imaginary.
Is the total amount correct? I can’t do math, don’t lie to me
With fluoride ions, tantalum cannot be used. We might need to consider inorganic materials or platinum.
Or consult Sigle Company. Have you considered ceramic-based materials? The main issue is that fluoride ions are difficult to deal with, and glass-lined materials are also a problem.