Application of different oxidants for hard leaching ores in an acid in-situ leaching uranium mine

Based on some acid in-situ leaching uranium mineral sample of Yili basin, the reason why it is hard to leach is researched through chemical analysis and mineral components analysis.SEM & chemical analysis showed that the reasons include:bad permeability, low metal grade, high consumption of non-target minerals and non-sensitive of oxidation.Stirring leaching and column leaching under normal and high pressure were carried out to find out the influence of different kinds of oxidants for uranium minerals.The results showed that sodium dichloroisocyanurate had a better influence to improve the leaching efficiency than other oxidants and there was no obvious co-improvement when using oxygen with these oxidants.