Study on Mechanism of Oxygen Oxidation Leaching with Low Acid for High Acid Consumption Sandstone Uranium Deposit

In view of the problems high acid consumption, blockage ore-bearing beds caused by iron ion precipitation and a low leaching rate in conventional sandstone-type uranium deposit, author put forward “low-acid oxygen technology” research. order to further clarify mechanism ore with oxygen, oxidation ferrous under acidic conditions, influencing factors process, kinetic simulation oxidizing minerals, interaction solution were analyzed studied, conditions was explored. The results show that condition acidity, kinetics oxidized is between first-order second-order reaction, which can reduce then influence on leaching, so as improve rate. This study confirmed feasibility acidity has good guiding significance for effective deposits consumption.