Rheological properties of calcium carbonate suspensions determined from centrifugation

Page: s32

G. Paravanovaa, B. Hausnerovaa,b, J. C. Beltran-Prietoc

aCentre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Nad Ovčírnou 3685, 760 01 Zlín, bDepartment of Production Engineering, Faculty of Technology, Tomas Bata University in Zlin, nám. T.G. Masaryka 275, 762 72 Zlín, cDepartment of Automation and Control Engineering, Faculty of Applied Informatics, Tomas Bata University in Zlin, Nad Stráněmi 4511, 760 05 Zlín

 

Centrifugation method is employed for testing of rheological effectiveness of sulphonated melamineformaldehyde condensate plasticizer in calcium carbonate suspensions. It was found that yield values (critical normal and shear stresses) are governed by the dose of additive through the sorption of additive molecules on calcium carbonate particles. Moreover, critical normal stress increases with decrease of inter-particle volume of suspensions.

 

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