Chapter 7. Coal Slag-Refractory Compatibility Studies: Progress to Date

  1. William Smothers
  1. C. R. Kennedy

Published Online: 27 MAR 2008

DOI: 10.1002/9780470291115.ch7

Proceedings of the Educational Symposium on Refractories in Sagging Environments: Ceramic Engineering and Science Proceedings, Volume 2

Proceedings of the Educational Symposium on Refractories in Sagging Environments: Ceramic Engineering and Science Proceedings, Volume 2

How to Cite

Kennedy, C. R. (1981) Coal Slag-Refractory Compatibility Studies: Progress to Date, in Proceedings of the Educational Symposium on Refractories in Sagging Environments: Ceramic Engineering and Science Proceedings, Volume 2 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291115.ch7

Author Information

  1. Argonne National Lab 9700 S. Cass Ave., Argonne, Ill. 60439

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 1981

ISBN Information

Print ISBN: 9780470373927

Online ISBN: 9780470291115

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Keywords:

  • refractories;
  • resistance;
  • spinel-reactton;
  • multicomponent;
  • commercialization

Summary

Approximately 60 different refractories have been exposed to both acidic and basic molten coal slags at temperatures between 1500° and 1600°C. A dense fused-cast chrome-spinel refractory has demonstrated superior resistance to corrosion by a wide variety of coal slags (CaO/SiO2=0.2–1.7). Refractories containing >30% chromia reacted with all types of slags to form complex spinel-reactton products. Alumina refractories were intermediate in performance in acidic slags and poor in basic slags. Magnesia-chrome refractories containing free MgO perfomed poorly in acidic slags but somewhat better in basic slags. Preferential dissolution of MgO was observed in all cases.