Kurzfassung
Seit über 20 Jahren finden kohlenstoffgebundene MgO(MgO-C)- und MgO-Al2O3-Steine (MAC) in Stahlwerkspfannen Anwendung. Zur Untersuchung der Korrosionsbeständigkeit wurde MgO-C und MgO-C mit CaO-MgO-Al2O3-Aggregaten (CMA) unter Laborbedingungen und weiterhin für sechs Monate in einem Feldversuch in einer Stahlwerkspfanne eingesetzt. Untersuchungen haben gezeigt, dass die CMA-Zugabe die Korrosion deutlich reduziert und zur Bildung einer Schlackeschutzschicht auf den Steinen beiträgt.
Abstract
MgO-C and MgO-Al2O3-C bricks (MAC) have been used in steel ladles for over 20 years. Corrosion tests have been performed under laboratory conditions as well as in a ladle for six months in an integrated steel shop. The addition of CaO-MgO-Al2O3 aggregates increases the corrosion resistance of MgO-C and promotes the formation of a slag coating on top of a carburised zone at the hot face. The slag coating formation as well as the dissolution of MgO grains have been investigated.
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Gehre, P., Dudczig, S., Schmidt, G. et al. Untersuchung der Schutzwirkung von MgO-C-Pfannensteinen mit CMA-Zusatz. Keram. Z. 70, 40–46 (2018). https://doi.org/10.1007/s42410-018-0050-7
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DOI: https://doi.org/10.1007/s42410-018-0050-7