Chapter 1. Improved Casting Slip Properties with Extended Particle-Size Distribution and Change in Deflocculation

  1. John B. Wachtman Jr.
  1. Ching-Hsien Li,
  2. K. Mancini and
  3. G. C. Robinson

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314340.ch1

A Collection of Papers Presented at the 95th Annual Meeting and the 1993 Fall Meeting of the Materials & Equipment/Whitewares/Manufacturing: Ceramic Engineering and Science Proceedings, Volume 15, Issue 1

A Collection of Papers Presented at the 95th Annual Meeting and the 1993 Fall Meeting of the Materials & Equipment/Whitewares/Manufacturing: Ceramic Engineering and Science Proceedings, Volume 15, Issue 1

How to Cite

Li, C.-H., Mancini, K. and Robinson, G. C. (1994) Improved Casting Slip Properties with Extended Particle-Size Distribution and Change in Deflocculation, in A Collection of Papers Presented at the 95th Annual Meeting and the 1993 Fall Meeting of the Materials & Equipment/Whitewares/Manufacturing: Ceramic Engineering and Science Proceedings, Volume 15, Issue 1 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314340.ch1

Author Information

  1. Clemson University Clemson, SC 29631

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375297

Online ISBN: 9780470314340

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Keywords:

  • particles;
  • hydroxide;
  • casting behavior;
  • shrinkage;
  • contrariwise

Summary

An investigation was made into the use of >200-mesh particles in casting slips and the use of calcium hydroxide to improve casting behavior. It was thought that this approach would facilitate the use of fired body scrap in slip formulation. It was found that the use of calcium hydroxide increased the casting rate by 65% and reduced water uptake by the mold by 12%. Extended particle sizes can reduce the retained water in the cast by 29% and drying shrinkage by 53%. The particles were capable of decreasing the porosity in the cast object by 22%, increasing the firmness of cast, and increasing the speed of drying.