“A new generation of Knelson concentrators” a totally secure system goes on line

Abstract

This paper briefly outlines some of the traditional gravity devices commonly utilized in precious metal recovery mill systems. It summarizes the development of the centrifugal concentrator and features the problem of overcoming the retention of values while vastly increasing the g force. The principals of the Standard Knelson Concentrator are explained and the Centre Discharge model is introduced which provides a totally secure gravity system. Reference is also made to the development of the Continuous Knelson Concentrator designed for the concentration of base metals and segregation of contaminating elements from finely classified coal. Special attention is given to sampling for free milling precious metals, the correct orientation of Knelson Concentrators in a gravity circuit and the economic advantages that can be expected.