Abstract
Recent trends in the improvement of the mineral liberation measurements are briefly reviewed. Mineral liberation is the parameter used to suggest action to the flotation process which is intended to render better separation efficiency. The exposed grain surface area of 2D imaging of a polished section with stereological correction is proven to be the appropriate method to measure mineral liberation. Supplementary to 2D imaging, 3D micro CT scanner has also been used to determine the internal structure of the materials to analyze the volumetric grade of mineral of interest. There is a significant development that has been made in correcting measured liberation data acquired from 2 dimensional plane to 3 spatial dimensional. Although progress is being achieved, there are still challenges facing correction methods. Therefore, the advantages and disadvantages of specific issues, such as point spread function and excitation energies, facing the correction methods are discussed.