Flotation Level Control is not a black art.
However, unstable level control is a widespread cause of sub-optimal flotation performance.
Flotation circuit stability has a significant influence on the overall economic efficiency of a mineral processing plant. At Mipac, we know from practical experience, the importance of having a stable flotation circuit, in particular stable pulp level control in flotation banks and cells.
If feed-flow is reasonably steady, then a simple control strategy can be sufficient. In many concentrators though, particularly those using SAG mills for primary grinding, feed-flow rates can vary significantly. For these plants, a more sophisticated control strategy is required.