Study on the influence of filter scheme on the leaching effect of in-situ leaching of uranium

In this paper, a quantitative analysis method of in-situ leaching of uranium is established based on four parameters: effective convective volume, effective convective volume ratio, effective leaching volume ratio, volume ratio of leaching convection. Taking a uranium mine in Inner Mongolia as the research object, the influence of filter scheme on the leaching effect of in-situ leaching of uranium is studied. The optimal filter design scheme is recommended for site drilling.The results show that this method can be used to quantitatively study the effective convection volume, effective leaching volume and leaching agent utilization rate under different filter design schemes. Comparison of filter schemes: the flow field formed by the long filter scheme is larger, and the benefit of increasing unit length is less when the filter length is larger than 5 m. The position of the filter affects the effective convection volume and the effective leaching volume. The short filter （2.5 m） should use a central layout, and the long filter （5 m, 10 m） should use staggered layout. Scheme 2 is the best filter scheme, and the field application results show that the injection volume and uranium concentration are increased, which effectively guides the engineering design of in-situ leaching of uranium well site.