What materials are resistant to corrosion when used with a mixed acid of nitric acid and sulfuric acid?
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What materials are resistant to corrosion when used with a mixed acid of nitric acid and sulfuric acid?
Use fluorinated lining at temperatures below 180°C, maintain positive pressure inside; alternatively, a siloxane-modified coating resistant to strong oxidation and corrosion can be used, with temperatures also not exceeding a certain limit
What equipment do we need to look at, and what’s the temperature? Only then can an appropriate anti-corrosion solution be selected.
Indeed, fluorinated lining is a great and excellent choice.
For nickel-based alloy 625 materials, Hastelloy C-276 is required in harsh conditions. These materials perform well when used to manufacture pipes and flange forgings; however, the specific choice depends on the operating conditions involved!
Is the 625 mentioned upstairs considered too high in cost?
Teflon is still the best choice. As for which specific type of Teflon to use (PTFE, PFA, ETFE, ECTFE) and the manufacturing process, it depends on the operating temperature and the structure of the equipment.
If the temperature is not high, fluorinated lining can be used; the pipelines can also be made of CPVC or have a steel framework.