Colloid and Polymer Science

, Volume 284, Issue 1, pp 112–116

Modification of flow properties of concentrated lignite dispersions

  • Miloslav Pekař
  • Pavla Divišová
  • Michal Klimovič
Short communication Polymer

DOI: 10.1007/s00396-005-1379-1

Cite this article as:
Pekař, M., Divišová, P. & Klimovič, M. Colloid Polym Sci (2005) 284: 112. doi:10.1007/s00396-005-1379-1

Abstract

Concentrated water-based lignite suspensions (pastes) possess unpleasant flow behaviour. Under extrusion-like conditions suspension is rapidly compacted, viscosity rises considerably and flow effectively ceases. Using diluted aqueous solution of carboxymethylcellulose sodium salt as a dispersion medium eliminates this adverse phenomenon and keeps liquid-like flowing of suspension. Moreover, effective dilatant suspension behaviour is transformed to pseudoplastic.

Keywords

Carboxymethylcellulose Lignite paste Rheological additive Suspension 

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Miloslav Pekař
    • 1
  • Pavla Divišová
    • 1
  • Michal Klimovič
    • 1
  1. 1.Faculty of Chemistry, Institute of Physical and Applied ChemistryBrno University of Technology Czech Republic

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