Method for enriching rare earth elements in weathered crust by using pteridophytes

A technology of ferns and rare earth elements, which is applied in the field of rare earth enrichment in weathering crust, can solve the problems of rare earth pollution, entry, heavy metal pollution, etc., and achieve the effect of improving the ecological environment and realizing enrichment and recovery
CN113234943AActive Publication Date: 2021-08-10GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2021-08-10

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Abstract

The invention belongs to the technical field of weathered crust rare earth enrichment, and particularly relates to a method for enriching rare earth elements in a weathered crust by using pteridophytes. The method comprises the following steps of 1) soil pretreatment; and 2) pteridophyte planting, wherein the pteridophytes are planted on the weathered crust, and the pteridophytes comprise one or more of blechnum orientale, dicranopteris pedata, athyrium filix-femina, dryopteris filix-mas, asplenium trichomanes, diplopterygium glaucum, lindsaea odorata, woodwardia japonica, stenoloma chusana, adiantum flabellulatum, cibotium barometz, microlepia strigosa and diplazium donianum. Different pteridophytes are planted on different structural layers of the weathered crust in different modes to be used for adsorbing rare earth elements in soil, so that the rare earth resources can be effectively utilized; and the effect of improving the surrounding ecological environment can be achieved by planting the pteridophytes in the weathered crust soil. Compared with an existing rare earth mining technology, the method cannot cause secondary pollution. The method provides an economical and effective solution way for realizing ecological management of rare earth polluted land and rare earth reclamation.
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Description

technical field

[0001] The invention belongs to the technical field of rare earth enrichment in weathering crust, in particular to a method for enriching rare earth elements in weathering crust by utilizing ferns. Background technique

[0002] Rare earth elements (REEs) are the collective name of 17 elements of the lanthanide series including scandium and yttrium, and can be divided into light rare earth elements, medium rare earth elements and heavy rare earth elements. Due to its special physical and chemical properties, rare earth elements have special optical, electrical, magnetic and other properties, and are widely used in electronics, petrochemical, metallurgy, machinery, energy and light industry and other fields. Industrial MSG". Therefore, the mining of rare earth minerals is a very critical step in resource utilization.

[0003] Among rare earth mineral resources, ion adsorption rare earth deposits are a unique and ubiquitous rare earth resource discovered in my...

Claims

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