Coal Mining and Preparation Mineral Industry SolutionsThe majority of coal preparation processes require large quantities of water. Exceptions to this include crushing, screening, and transportation. Coal is separated from inert materials using flotation. This yields wastewater rich in coal fines. This water must be treated for solids removal before it can be reused in the plant or.treating coal mine prep plants,Prep Plant Deshaling & Mine Site Deshaling & Coal DeshalingIn this case, the FGX dry coal equipment can be applied near the mine site or prep plant for deshaling. By doing this, some or even most of the pure rock can be removed from ROM coal prior to haulage and feeding to prep plants. . The tiny clay particles pose serious changes to water treatment system at prep plants.