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Modification of flow properties of concentrated lignite dispersions

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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.

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Authors and Affiliations

  1. Faculty of Chemistry, Institute of Physical and Applied Chemistry, Brno University of Technology, Purkyňova 118, 612 00, Brno,  , Czech Republic

    Miloslav Pekař, Pavla Divišová & Michal Klimovič

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  1. Miloslav Pekař
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  2. Pavla Divišová
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  3. Michal Klimovič
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Correspondence to Miloslav Pekař.

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Pekař, M., Divišová, P. & Klimovič, M. Modification of flow properties of concentrated lignite dispersions. Colloid Polym Sci 284, 112–116 (2005). https://doi.org/10.1007/s00396-005-1379-1

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  • DOI: https://doi.org/10.1007/s00396-005-1379-1

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