Reclamation and greening method for ionic rare earth ore area

Abstract

The invention discloses a reclamation and greening method for an ionic rare earth ore area, which comprises the following steps of: backfilling waste soil and rock soil into a liquid injection well, a flow guide hole working surface, a liquid collection tunnel, a liquid collection pool, a higher-place pool, a dump leaching field, a surface soil stockpiling field and a temporary waste soil field through the steps of backfilling surface soil, neutralizing soil, applying fertilizer to a surface layer, planting plants and the like; then performing regional leveling, slope cutting and terraced field preparation, then adding quick lime and uniformly mixing to neutralize soil, then adding sugar refining filter mud and uniformly mixing to increase soil fertility, then selecting one or more of commercial crops, eucalyptus, grass and shrubs and mixing for planting, and after the reclamation is completed, regularly applying one or a combination of more of biological rotten leaves, sugar refining filter mud and chemical fertilizers to the soil to maintain the soil fertility. The method is suitable for reclamation and greening after mining of two ionic rare earth mines of volcanic rock type and granite type, the ecological environment of the ore area is restored, and land resources are reused.

Description

technical field [0001] The invention belongs to the technical field of land restoration and management in mining areas, and in particular relates to a method for reclamation and greening of ion-type rare earth mining areas. Background technique [0002] Rare earth is a general term for 17 metal elements including lanthanides, scandium and yttrium in the periodic table of elements. There are 250 rare earth minerals in nature, the main minerals are monazite, cerite, cerite, black rare gold ore and yttrium phosphate ore. At present, rare earth elements have been widely used in electronics, petrochemical industry, metallurgy, machinery, energy, light industry, environmental protection, agriculture and other fields, and can produce fluorescent materials, rare earth metal hydride battery materials, electric light source materials, permanent magnet materials, hydrogen storage materials, etc. Materials, catalytic materials, precision ceramic materials, laser materials, superconduct...

AI Technical Summary

Problems solved by technology

Although the in-situ leaching process, compared with the old processes of pool leaching and heap leaching in the past, does not require large-scale destruction of surface vegetation and soil, it still needs to excavate a large number of liquid injection holes, shallow grooves and liquid collection trenches. In addition, the rare earth mother liquor Production workshops such as collection ponds, wastewater treatment ponds, temporary slag storage, etc. also need to occupy a certain area of ​​the mining area. It is mainly divided into two types of deposits: granite and volcanic rock. Granite and volcanic rock are different in terrain, landform, geological structure, and soil structure, and their reclamation methods after mining are also different. At present, there are few suitable for reclamation after mining of volcanic rock-type rare earth mines. Greening method

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