Electrophoresis works better than electrostatic beneficiation but is much slower.
The mineral grains to be separated are put into the fluid, where they will be suspended due to the zero gravity environment. Electric charges will pass thru the fluid from one wall to the other, and the minerals will collect electric charges. Due to the differing molecular natures of the different mineral types, each will accumulate a different net electric charge with respect to the fluid. Each type of mineral will form a plane of material parallel to the two walls and parallel to planes of the other mineral types. Electrophoresis has been employed by medical and biological fields since the 1930s for separation and identification of enzymes, proteins, lipids, and blood cells.