Corrosion behavir of MgO-CaO refractories
UNITECR '05 - Proceedings of the Unified International Technical Conference on Refractories: 9th Biennial Worldwide Congress on Refractories(2006)
摘要
Magnesia-Calcia materials containing 22-53 wt% CaO have been investigated for refinery slag corrosion and penetration resistance by Scanning Electron Microscopy (SEM) and XRD. The corrosion and penetration ability of MgO-CaO materials is better and is enhanced with the increase of CaO content in specimens. It can be explained that, with increase of CaO content, specimens reacted with slag forming more high melting point minerals of C3S and C2S, creating a dense surface layer, which stopped others from penetrating further. Thus, the corrosion and penetration resistance was improved. No matter what kinds of slag, the depth of penetration decreased with increase of CaO content.
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