Cast Iron Failures in Sulphuric Acid Plant

Abstract

The first part of this article (February issue) dealt with a failure in a boiler raising steam by using heat from a 7% SO2‐in‐air mixture; the protective corrugated cast iron shell round the boiler tubes opened, exposing them to oxidation. The present case concerns cracking of a 22‐in. connecting main between two SO3 absorbers; this was found to be caused by SO3 passing into the cast iron through the graphite flakes and attacking the adjoining ferrite.

Citation

Banfield, R.H. and Gaskell, D.R. (1966), "Cast Iron Failures in Sulphuric Acid Plant", Anti-Corrosion Methods and Materials, Vol. 13 No. 3, pp. 21-23. https://doi.org/10.1108/eb006715