A kind of ion adsorption type rare earth in-situ leaching method and its leaching system

Abstract

The invention belongs to the technology of in-situ leaching mining, and particularly relates to an ion-adsorption-type rare earth in-situ leaching method and a leaching system thereof. A non-excavation directional drilling machine is used for carrying out mechanical drilling of injection wells and liquid-collecting roadways instead of using manual excavation, The quantity of the injection wells is decreased, the injection wells are changed into curved pipes and are buried in a mine body. Therefore, the phenomenon that rainwater infiltrates into channels is reduced, a landslide triggered by the in-situ leaching is prevented, the construction is simple, the construction cycle is short, the cost is low, the safety performance is improved, the waste earth discharge is reduced, and the ecological environment is protected.

Description

technical field

[0001] The invention belongs to in-situ leaching mining technology, in particular to an ion-adsorption type rare earth in-situ leaching method and an ore leaching system. Background technique

[0002] China's rare earths account for 80% of the world's proven rare earth reserves, and are my country's dominant mineral resources and strategic resources. The south is dominated by heavy rare earths, and the north is dominated by light rare earths. Among them, the southern ion-type adsorption rare earth deposits are of the "weathered crust type", rich in medium and heavy rare earth elements such as yttrium, dysprosium, and terbium, which are necessary for modern high-tech and cutting-edge fields such as national defense.

[0003] Weathering crust leaching rare earth deposits are mainly distributed in six provinces and regions in southern my country, including Jiangxi, Fujian, Hunan, Guangdong, Guangxi and Yunnan. The position is generally higher, the weathering of...

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