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Curing method for pollutants in fully weathered layer

A technology of full regolith and curing method, applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve problems such as easy loss of pollutants, and achieve the effect of improving curing and adsorption effects

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

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is the defect that the pollutants in the fully weathered layer of the existing abandoned mine are easy to lose, and then a method for solidifying the pollutants in the fully weathered layer of the abandoned mine is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a method for solidifying pollutants in a fully weathered layer, comprising the following steps:

[0030] (1) Inject clay-like substances into the fully weathered layer of the abandoned mine for ionic rare earth in-situ leaching, inject 500kg of clay-like substances into the fully weathered layer per cubic meter, and the clay-like substances are clay;

[0031] (2) Lay straws on the curing net to form a straw layer, and evenly spread 100kg of curing agent on the straw layer per square meter, wherein the curing net is a mesh structure formed by weaving palm leaf latitude and longitude; straw is straw; the straw layer The thickness is 2cm; the curing agent is composed of zeolite and bentonite with a mass ratio of 20:100;

[0032] (3) Put the treated solidified net into the fully weathered layer, part of the solidified net extends into the fully weathered layer, and part of it leaks out of the fully weathered layer, forming a barrier layer in the ful...

Embodiment 2

[0034] This embodiment provides a method for solidifying pollutants in a fully weathered layer, comprising the following steps:

[0035] (1) Inject clay substances into the fully weathered layer of the ionic rare earth in-situ leaching abandoned mine, inject 50kg of clay substances into the fully weathered layer per cubic meter, and the clay substances are bentonite;

[0036] (2) paving straw on the curing net to form a straw layer, evenly spreading the curing agent of 200kg on the straw layer per square meter, wherein the curing net is a network structure formed by palm leaves and straw warp and weft; straw is straw; The thickness of the straw layer is 1cm; the curing agent is composed of zeolite and bentonite with a mass ratio of 100:20;

[0037] (3) Put the treated solidified net into the fully weathered layer, part of the solidified net extends into the fully weathered layer, and part of it leaks out of the fully weathered layer, forming a barrier layer in the fully weathe...

Embodiment 3

[0039] This embodiment provides a method for solidifying pollutants in a fully weathered layer, comprising the following steps:

[0040] (1) Inject clay-like substances into the fully weathered layer of the abandoned mine for in-situ leaching of ionic rare earths, inject 1000kg of clay-like substances into the fully weathered layer per cubic meter, and the clay-like substances are kaolin;

[0041] (2) paving straw on the curing net to form a straw layer, evenly spreading 40kg of the curing agent on the straw layer per square meter, wherein the curing net is a mesh structure formed by weaving palm leaf warp and weft; the straw is a reed; The thickness of the straw layer is 3cm; the curing agent is composed of zeolite and bentonite with a mass ratio of 50:50;

[0042] (3) Put the treated solidified net into the fully weathered layer, part of the solidified net extends into the fully weathered layer, and part of it leaks out of the fully weathered layer, forming a barrier layer i...

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Abstract

The invention discloses a curing method for pollutants in a fully weathered layer. The method comprises the steps: firstly, injecting clay substances into the fully weathered layer, and curing the fully weathered layer by using the clay substances; spreading straws on a curing net to form a straw layer, and spreading a curing agent on the straw layer; and finally, driving the treated curing net into the fully weathered layer, specifically, part of the curing net stretches into the fully weathered layer, part of the curing net is exposed out of the fully weathered layer, a barrier layer is formed in the fully weathered layer, and the curing of the pollutants in the fully weathered layer is realized. Meanwhile, the curing net, the straw layer and the curing agent are mutually matched to formtriple protection, so that not only the pollutants in the waste mine are cured and adsorbed, but also the pollutants entering the waste mine from outside are adsorbed and cured.

Description

technical field [0001] The invention belongs to the technical field of abandoned mine treatment, in particular to a solidification method for pollutants in fully weathered layers, in particular to a solidification method for ionic rare earth in-situ leaching of pollutants in abandoned mines in full weathered layers. Background technique [0002] The ionic rare earth in-situ leaching process is a mining method that uses a leaching agent to selectively leach useful components from heterogeneous ore bodies under natural burial conditions. Compared with the pool leaching process, not only the rare earth recovery rate is higher, but also the damage to forests, farmland and landform is less. Therefore, the in-situ leaching process is widely used in the extraction of ionic rare earths. [0003] The ionic rare earth in-situ leaching process requires the excavation of liquid injection wells, liquid collection trenches, and working platforms. The actual in-situ leaching process is ca...

Claims

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Application Information

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IPC IPC(8): B09B3/00
CPCB09B3/25
Inventor 冯秀娟
Owner 中节能大地环境修复有限公司