Rheological Properties of Urea-CaLS Mixture for Urea Fertilizer Granulation

Mohamad Juoi, Jariah and Nazari , Farahani Irna and Mitan, Nona Merry Merpati and Shaaban, Azizah (2013) Rheological Properties of Urea-CaLS Mixture for Urea Fertilizer Granulation. Advanced Materials Research , Vol. 7. pp. 329-332. ISSN 1022-6680


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The rheological properties of feedstock for granulation process are important in controlling the parameters throughout the process. This study identifies the type of fluid that mixtures of Urea and Calcium Lignosulfonates (CaLS) possessed through the viscosity profiles using a parallel plate rheometer. The viscosity behavior of mixtures with varied weight percentages (wt %) of CaLS in urea solution were analysed. Results identified that the mixtures show shear thickening behavior of non-Newtonian fluid. It is also observed that the increases of CaLS content increase the viscosity of the mixtures. Moreover, the mixture with 50 % CaLS addition is found not suitable for further investigation as its viscosity is too high (3.450-6.773 Pa.s at zero shear rate) compared to molten urea (0.002 Pa.s).

Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User: Assoc. Prof. Dr. Jariah Mohamad Juoi
Date Deposited: 04 Feb 2014 00:21
Last Modified: 28 May 2015 04:14
URI: http://eprints.utem.edu.my/id/eprint/10950
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