Chapter 14. High Strength Insulation for Steel Ladles

  1. William Smothers
  1. Valerie E. Mccallen

Published Online: 28 MAR 2008

DOI: 10.1002/9780470320310.ch14

Applications of Refractories: Ceramic Engineering and Science Proceedings, Volume 7, Issue 1/2

Applications of Refractories: Ceramic Engineering and Science Proceedings, Volume 7, Issue 1/2

How to Cite

Mccallen, V. E. (1986) High Strength Insulation for Steel Ladles, in Applications of Refractories: Ceramic Engineering and Science Proceedings, Volume 7, Issue 1/2 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320310.ch14

Author Information

  1. Manville Corporation P.O. Box 190, Zelienople, PA 16063

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1986

ISBN Information

Print ISBN: 9780470374443

Online ISBN: 9780470320310

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Keywords:

  • alumina;
  • thermal conductivity;
  • shrinkage;
  • prolonged;
  • masonry hammer

Summary

The industry trend toward the use of high alumina and dolomite refractories in steel ladles coupled with longer holding times, has prompted the investigation of incorporating insulation into the refractory lining. Benefits of insulating steel ladles are: reduction in steel temperature loss over extended time, protection for the ladle shell, increased refractory life, reduced scrap and skulling, and enhanced or minimized preheating. One type of insulation is discussed that combines high strength, low thermal conductivity and nominal thickness. Its success in reducing temperature loss in iron ladles led to its use as steel ladle insulation. Case histories are discussed in addition to installation techniques and perceived benefits of the insulating board. Ladle shell protection, increased refractory life, and enhanced ladle preheat are emphasized more than reduction in steel temperature loss.