Separation process with separation media loss reduction

A process for separating particles using wet density-based separation comprising, coating at least part of said particles with a coating material by preparing a solution of micelles of said coating material and contacting the particles to be coated with said solution prior to being mixed with a ferrofluid and fed to a wet density-based separation device, mixing the coated particles with the ferrofluid and feeding the coated particles into the wet density-based separation device, wherein said density-based separating process is a Magnetic Density Separation (MDS) process, and wherein said coating material comprises a surfactant and is present on at least more than half of the outside area of each coated particle.