Ecological recovery method for ionic rare earth in situ mineral leaching abandoned mine and recovery system thereof

An ionic rare earth, in-situ leaching technology, applied in soil protection, adsorbed water/sewage treatment, protection devices, etc., can solve problems such as ecological pollution of abandoned mines, and achieve the effect of preventing soil loss

Pending Publication Date: 2019-11-08
中节能大地环境修复有限公司 +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides an ecological restoration method and a recovery system for an abandoned mine of ionic rare earth in-situ leaching ore leaching, so as to solve the problem of ecological pollution in an abandoned mine of ionic rare earth in-situ leaching in the prior art

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  • Ecological recovery method for ionic rare earth in situ mineral leaching abandoned mine and recovery system thereof

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Embodiment 1

[0046] The embodiment of the present invention provides an ionic rare earth in-situ leaching abandoned mine ecological restoration restoration system, such as figure 1 shown, which includes:

[0047] Plants planted on the surface of the abandoned mine 1;

[0048] A sand-fixing net 5 arranged on the surface and / or in the depth direction of the abandoned mine 1 for preventing sand loss;

[0049] The osmotic reaction wall 3 arranged at the bottom of the abandoned mine 1, the osmotic reaction wall 3 is used to prevent the leachate overflow of the abandoned mine 1;

[0050]The sediment buffer zone 4 is arranged between the mountain body of the abandoned mine 1 and the osmotic reaction wall 3 . By strengthening the surface runoff of the abandoned mine 1, it is possible to effectively prevent surface water from seeping into the interior of the abandoned mine 1; by planting plants on the surface of the abandoned mine 1 to form a covering barrier surface layer 2, soil loss can be eff...

Embodiment 2

[0070] The embodiment of the present invention provides an ionic rare earth in-situ leaching abandoned mine ecological restoration restoration system, such as figure 1 shown, which includes:

[0071] Plants planted on the surface of the abandoned mine 1;

[0072] A sand-fixing net 5 arranged on the surface and / or in the depth direction of the abandoned mine 1 for preventing sand loss;

[0073] The osmotic reaction wall 3 arranged at the bottom of the abandoned mine 1, the osmotic reaction wall 3 is used to prevent the leachate overflow of the abandoned mine 1;

[0074] The sediment buffer zone 4 is arranged between the mountain body of the abandoned mine 1 and the osmotic reaction wall 3 . By strengthening the surface runoff of the abandoned mine 1, it is possible to effectively prevent surface water from seeping into the interior of the abandoned mine 1; by planting plants on the surface of the abandoned mine 1 to form a covering barrier surface layer 2, soil loss can be ef...

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Abstract

The invention discloses an ecological recovery method for an ionic rare earth in situ mineral leaching abandoned mine and a recovery system thereof. The ecological recovery method for the ionic rare earth in situ mineral leaching abandoned mine comprises the following steps: strengthening an overland runoff of the abandoned mine to prevent surface water from infiltrating into the abandoned mine; planting plants on the surface of the abandoned mine to form a covering and blocking surface layer on the surface of the abandoned mine to prevent soil loss; arranging an intermediate stable layer forpreventing soil loss on the abandoned mine; constructing a permeating reaction wall at the bottom of the abandoned mine to prevent a percolate of the abandoned mine from overflowing; arranging a sediment buffer area between the abandoned mine and the permeating reaction wall; and collecting and disposing a residual liquid of the abandoned mine. The ecological recovery method solves the problem ofecological pollution of the ionic rare earth in situ mineral leaching abandoned mine in the prior art.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to an ecological restoration method and restoration system for an abandoned mine by in-situ leaching of ionic rare earth ore. Background technique [0002] In the 1970s, ionic rare earths were basically mined by "moving mountains", that is, all the vegetation and soil on the surface of the mine were stripped to obtain the original ore, resulting in the destruction of all the original soil layers. After the rare earth is mined, the mine accepts natural denudation in the form of exposed bedrock (that is, weathered granite crust). Since the 1990s, in-situ leaching technology has been widely used in the mining of ionic rare earths, that is, sulfuric acid and sulfuric acid leaching solution are injected into ore soil through injection wells to extract rare earths. Excessive sulfuric acid and sulfuric acid leaching solution changed the geochemical environment of the mine, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/00E02D31/00C02F1/28
CPCC02F1/28E02D3/00E02D3/005E02D31/00
Inventor 冯秀娟
Owner 中节能大地环境修复有限公司
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