Continuous rheometry for industrial slurries
Mineral solids are usually processed, produced or handled in the form of two-phase slurries. Accurate and reliable measurements of the rheological properties of settling slurries using conventional viscometric instruments can be difficult, if not impossible, since the solid particles settle rapidly...
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| Veröffentlicht in: | Experimental thermal and fluid science 2003-05, Vol.27 (5), p.507-514 |
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| container_title | Experimental thermal and fluid science |
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| creator | Akroyd, T.J Nguyen, Q.D |
| description | Mineral solids are usually processed, produced or handled in the form of two-phase slurries. Accurate and reliable measurements of the rheological properties of settling slurries using conventional viscometric instruments can be difficult, if not impossible, since the solid particles settle rapidly under the influence of gravity. In this paper we report on the development of an on-line flow rheometer specially designed and constructed for characterising the rheological behaviour of settling slurries. The instrument design is based on the principles of helical flow, which is the combination of tangential Couette and axial Poiseuille flows. The data reduction procedure developed is firmly based on the theory of helical flow and has been extensively tested and validated with fluids of different rheological behaviour. Good results have been obtained using the rheometer for various Newtonian liquids, pseudoplastic polymeric solutions and mineral slurries. |
| doi_str_mv | 10.1016/S0894-1777(02)00264-9 |
| format | Article |
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Accurate and reliable measurements of the rheological properties of settling slurries using conventional viscometric instruments can be difficult, if not impossible, since the solid particles settle rapidly under the influence of gravity. In this paper we report on the development of an on-line flow rheometer specially designed and constructed for characterising the rheological behaviour of settling slurries. The instrument design is based on the principles of helical flow, which is the combination of tangential Couette and axial Poiseuille flows. The data reduction procedure developed is firmly based on the theory of helical flow and has been extensively tested and validated with fluids of different rheological behaviour. 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| ispartof | Experimental thermal and fluid science, 2003-05, Vol.27 (5), p.507-514 |
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| language | eng |
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| subjects | Cross-disciplinary physics: materials science rheology Exact sciences and technology Flow rheometer Helical flow Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc Material form Mineral slurry On-line viscometer Physics Rheological characterisation Rheological measurements Rheology Techniques and apparatus |
| title | Continuous rheometry for industrial slurries |
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