| Beneficiation processes (crushing, screening, washing, magnetic separation and wet screening) of run-of-mine (ROM) phosphate ore aim at escalate the phosphorus content. It starts with the ROM and ends with the ore concentrate, and different rejects. Representative samples of ROM, concentrate, and rejects e.g., wet screening, magnetic separation, slime, clay rock and dolomite rock rejects were collected. Uranium-238 series radionuclides (238U, 226Ra and 210Pb), 228Ra, and 40K, and elemental U, Th and K were measured using gamma-ray spectrometer and ICP-MS analytical techniques, respectively. Uranium concentration and 238U series disequilibrium were discussed in relation with the beneficiation physicochemical processes. |
