Sahoo, B.K. ; Das, T.K. ; Gupta, A. ; De, S. ; Carsky, M. ; Meikap, B.C. (2017) Application of response surface analysis to iron ore slurry rheology using microwave pre-treatment South African Journal of Chemical Engineering, 23 . pp. 81-90. ISSN 10269185
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Official URL: http://doi.org/10.1016/j.sajce.2017.03.002
Related URL: http://dx.doi.org/10.1016/j.sajce.2017.03.002
Abstract
The present study focused on influence of microwave energy on rheological characterization of iron ore slurries performed in an online Bohlin viscometer. Detailed experimental investigations were carried out for Indian iron ore at high power level (900 W) for all the test samples in microwave oven. The exposure times were fixed at 30, 60, 90 and 120 s. Before and after treatment, the test samples were ground and sieved into different fractions for physical analysis. Central composite design (CCD) was applied to study the influence of particle diameter, solid concentration, microwave (MW) exposure time and shear rate on apparent viscosity for rheology characteristics of iron ore-water slurry. A quadratic model was developed for apparent viscosity using sets of experimental data and ANOVA. The model was used to calculate the optimum operating conditions for minimization of apparent viscosity. The apparent viscosity (21.31 mPa.s) produced at these operating conditions showed reasonable agreement with the amounts predicted by the models.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to South African Institution of Chemical Engineers (SAIChE). |
| Keywords: | Microwave Pre-Treatment; Iron Ore Slurry; Rheology; Modelling; Optimization |
| ID Code: | 136255 |
| Deposited On: | 21 May 2025 07:38 |
| Last Modified: | 21 May 2025 07:38 |
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