Journal
MINERALS ENGINEERING
Volume 24, Issue 2, Pages 98-101Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mineng.2010.07.008
Keywords
Hydrocyclone; Classification; Fine particle processing; Control; Water injection
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In kaolin classification, the final product is isolated from the overflow of a 50 mm hydrocyclone with an underflow containing fine sand and residual kaolin. For a higher kaolin recovery, the underflow is usually further treated using a washing cyclone. This paper presents a new development in fine sand washing using water injection in the conical section of the classifying cyclone. This washing results in a 45-50% reduction of the kaolin fraction (<10 mu m) in the underflow. Thus, water injection into the classifying cyclone leads to a separation comparable to downstream washing. (C) 2010 Elsevier Ltd. All rights reserved.
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