Limestone Grinding Control

In a process not involving the liberation of a valuable mineral, such as in producing limestone for the scrubbing of flue gases from power plants, the control requirements could be as follows:

• Control density of the classifier product.
• Add ball mill water at a ratio to the new feed rate.
• Maintain a set feed rate.
• Provide for intermittent operation.

• The control circuit shown in figure 1 provides for these control requirements in this manner: