Ionic rare earth mining method adopting pressurized liquid injection

Abstract

The invention discloses an ionic rare earth mining method adopting pressurized liquid injection, which comprises the following steps of: determining a tendency ore body hanging wall, a tendency ore body footwall, a trend ore body hanging wall, a trend ore body footwall and a true thickness middle plane of a target ore body according to geological information of the target ore body; determining a target diffusion radius of each target liquid injection hole; the target liquid injection pressure of each target liquid injection hole is determined; and the single-time target liquid injection time of each target liquid injection hole is determined. According to the ionic rare earth mining method adopting pressurized liquid injection, the diffusion speed and range of the ore leaching liquid are increased, the mining efficiency is improved, the hole net spacing is reduced, the occurrence time of the ore leaching liquid in the soil body is shortened, and the landslide risk is reduced.

Description

technical field [0001] The invention relates to the field of rare earth mining, in particular to an ionic rare earth mining method using pressurized liquid injection. Background technique [0002] Ionic rare earths in the south are the main producing areas of heavy rare earths in my country and even in the world, and in-situ leaching is the main mining method. In-situ leaching is to leach the rare earth cations adsorbed in the granite weathering crust by in-situ drilling and injection. Compared with other rare earth mining methods, in-situ leaching is more efficient and environmentally friendly, and has less damage to the environment. However, limited by the technical level, the leaching pressure of in-situ leaching depends on the water height at the bottom of the liquid injection hole. This small leaching pressure directly leads to a limited range of lateral diffusion of the leaching liquid, and the distance between the holes The height of the accumulated water is inconsis...

AI Technical Summary

Problems solved by technology

[0003] The ion-type rare earth mining method using pressurized liquid injection provided by the present invention solves the difficulty in accurately grasping the diffusion range of each liquid injection hole and the difficulty in accurately determining the liquid injection pressure of each liquid injection hole in the existing in-situ leaching mining method , It is difficult to accurately determine the injection time of each injection hole, resulting in the technical problem of low recovery rate of rare earth ions

Images