A kind of in-situ leaching mining method of ion-type rare earth ore

Abstract

The invention discloses an ionic type rare earth ore in-situ leaching and mining method. The method includes the steps of extracting ionic type rare earth ore liquid from a shallow mine layer and extracting ionic type rare earth ore liquid from a deep mine layer. The method has the advantages that the mining process is simple, mining is safe, the mining amount of the ionic type rare earth ore liquid is improved, seepage pressure can be monitored in real time, and automatic control and precise liquid injection are realized.

Description

technical field [0001] The invention relates to the technical field of rare earth ions in ore soil, in particular to an ion-type rare earth ore in-situ leaching mining method. Background technique [0002] China is the country with the richest rare earth resources in the world, and is known as the "Kingdom of Rare Earths". The south is dominated by heavy rare earths, and the north is dominated by light rare earths. my country's rare earth minerals not only have large reserves, but also have many varieties and good quality, and unique deposit types, such as the Baiyun Obo sedimentary metamorphism-hydrothermal metasomatism Ni-rare earth deposit in Inner Mongolia and the weathered crust deposit in the Nanling area. [0003] Ion-adsorbed rare earth minerals exist in the form of "ionic phase" minerals and are adsorbed on the surface of "carrier" minerals. Most of the rare earths in rare earth minerals exist in the state of cations and are adsorbed on a certain mineral carrier. S...

AI Technical Summary

Problems solved by technology

Although the patent can collect ionic rare earth ore liquid, it still has the following defects: (1) If there is a loophole in the comprehensive anti-seepage body, the extracted ionic rare earth ore liquid will pass through the hole and extend into the groundwater, which will not only pollute the groundwater but also also reduced mining

(2) After the mother liquid is added to the grouting hole, the liquid level of the mother liquid is not reasonably controlled. If the liquid level of the mother liquid is higher than the landslide safety line of the mountain or the vegetation safety line of the mountain, the extracted ionic rare earth ore liquid will make the vegetation Eutrophication, further causing eutrophication and death of plants planted on the vegetation layer

[0005] In addition, this patent can only mine shallow mine layers, that is, the ore body layer is located above the ditch beside the mountain, and the formed comprehensive anti-seepage body is located above the ditch, and the extracted ionic rare earth ore liquid can flow downstream into the ditch, however For mountains with deep ore layers, the depth of the ore body layer is relatively deep, and the formed comprehensive anti-seepage body is located under the ditch, so that the extracted ionic rare earth ore liquid cannot be taken out from the mountain body

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