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Keramische Zeitschrift

, Volume 70, Issue 6, pp 40–46 | Cite as

Untersuchung der Schutzwirkung von MgO-C-Pfannensteinen mit CMA-Zusatz

  • Patrick Gehre
  • S. Dudczig
  • G. Schmidt
  • C. G. Aneziris
  • C. Wöhrmeyer
  • S. Gao
  • C. Parr
Forschung und Technik Feuerfestwerkstoffe
  • 7 Downloads

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.

Keywords

MgO-C Spinell Korrosion Pfannenstein 

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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Copyright information

© Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature 2018

Authors and Affiliations

  • Patrick Gehre
    • 1
  • S. Dudczig
    • 1
  • G. Schmidt
    • 1
  • C. G. Aneziris
    • 1
  • C. Wöhrmeyer
    • 2
  • S. Gao
    • 2
  • C. Parr
    • 2
  1. 1.TU Bergakademie Freiberg, Institut für Keramik, Glas- und BaustofftechnikFreibergDeutschland
  2. 2.Imerys Aluminates, Immeuble PacificPuteauxFrankreich

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