Field tests of an equation that describes the dewatering of clay suspensions on a sand bed |
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| Authors: | SW Ihle BB Johnson TA Raven GJ Sparrow |
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| Institution: | 1. CSIRO Division of Mineral Chemistry, P.O. Box 124, Port Melbourne, Vic. 3207 Australia;2. Bendigo College of Advanced Education, P.O. Box 199, Bendigo, Vic. 3550 Australia |
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| Abstract: | Previous laboratory work indicated that the dewatering of suspensions of kaolin and fine quartz on a sand bed could be described by a simple two-term equation with one term for the drainage component and one for the evaporation component.Field tests have been carried out at three sand-washing operations in Victoria to determine if the equation is applicable in practice.The thickened suspensions were dewatered to a solid when they were ponded in shallow depths onto a sand bed. The changes in solids content during the dewatering confirmed that the dewatering equation could be used in practice.The dewatering equation is potentially very useful since it can be used to calculate optimum ponding depths, and therefore the area required to dewater a given production of tailing. |
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