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In kaolin classification, the final product is isolated from the overflow of a 50mm 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 hydrocyclones, the classification efficiency is limited by the fines, which are discharged together with the water in the underflow. It is well known that the injection of water in the conical portion of the cyclone reduces the fines in the underflow. This paper presents an improved technique, which is done via an injection at the upper end of the apex or the conical end. This results in a greater...
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