Abstract
In this chapter we investigate the cooling of the lateritic ore moving inside a rotating horizontal cylinder. The mineral, which has been previously milled, forms a granular bed. Due to rotation, the granular material undergoes discrete avalanching, whose characteristics depends either upon the angular velocity and the filling degree. The ore enters into the cooler at a temperature of approximately \({750\;^{\circ }}\)C and after moving along the cylinder its temperature decreases. The goal is to reduce the ore temperature to a value around \({170\;^{\circ }}\)C, so its metallic properties are preserved. To model this process a system of two differential equations and an algebraic equation depending only on the axial coordinate is solved. Otherwise we present data of the cooling in a cylinder 30 m long, a diameter \(\text{ d } = 3\) m and rotating with an angular velocity of 6.24 rpm. We show that numerical solution exhibits a partial agreement with experimental data.
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Acknowledgments
Ever Gongora Leyva thanks to SEP for the grant inside the “Programa de Cooperacion de Movilidad Estudiantil de Educación Superior México-Cuba”.
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Góngora-Leyva, E., Ruiz-Chavarría, G., Columbié-Navarro, Á., Retirado-Mediacejas, Y. (2014). The Cooling of a Granular Material in a Rotating Horizontal Cylinder. In: Klapp, J., Medina, A. (eds) Experimental and Computational Fluid Mechanics. Environmental Science and Engineering(). Springer, Cham. https://doi.org/10.1007/978-3-319-00116-6_14
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DOI: https://doi.org/10.1007/978-3-319-00116-6_14
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