This paper presents steps taken to optimise the existing rougher cells with the installation of concentric launders (donut launders) to reduce froth transportation distance followed by the implementation of a rougher flow controller to control the process and short interval control to align the focus and drive the operating philosophy towards improved recovery.
The paper also presents some brief results of a six-cell pilot campaign of the Eriez StackCell technology planned to provide the next stage of rougher performance improvement.