The Stirred Media Detritor (SMD) is a fine and ultrafine grinding mill produced by Metso that is used with feed sizes up to 200 microns and product sizes below 10 microns. It is currently being employed in many tertiary, regrind, and ultrafine grinding applications around the world. This paper will explore the best practices for implementing this unit in mineral processing applications. Topics that will be reviewed include the equipment selection, media selection, circuit configuration, layout considerations, maintenance, and process control. New concepts and features that can be implemented to enhance the unit's operation and performance will be reviewed. Select applications will be reviewed to assess the implementation of the SMD and the challenges associated with it.
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