In the grinding circuit, possible installation points are in the ball mill discharge and feed (recirculation), (hydro) cyclone feed, overflow and underflow.
The grinding circuit can be considered as the first step of a processing plant, therefore, operators need to have good control over it. One way to follow changes in the circuit is by measuring slurry density, which is done manually in many sites. The manually taken density sample can be used as a parameter to indicate if the grinding process is operating steadily.
However, manual sampling does not allow to have a trend for real-time control, so it is recommended to use an in-line measuring device, allowing to detect changes online (real-time) as it happens. As an example, a recommended application to efficiently dose grinding media (balls) and water into the ball mill is measuring density changes in the ball mill discharge.