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Ecological restoration matrix of lead-zinc tailing reservoir and preparation method and application thereof

A technology of ecological restoration and tailings pool, applied in the direction of application, fertilizer mixture, fertilization device, etc., can solve the problems of backward technology, low benefit of tailings recovery, low utilization rate of mines, etc., to achieve rapid ecological restoration, improve living and life The effect of environment and environmental pollution control

Active Publication Date: 2015-10-21
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low benefit of recycling tailings, the unreasonable practical application of research results, and the backwardness of existing technologies, some mines have a low utilization rate and some mines have a low recovery rate of main products.

Method used

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  • Ecological restoration matrix of lead-zinc tailing reservoir and preparation method and application thereof

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Effect test

Embodiment 1

[0028] The invention treats the lead-zinc tailings pond, and the selected additives are tailings of the tailings pond, urban river bottom mud, mineralized garbage, corn stalks, water retaining agent, adhesive and chelating agent. The invention selects two kinds of plants of cattail broadleaf and leucaena. The characteristics of each additive are as follows:

[0029] The tailings of the tailings pond in the present invention are dry beach deposits formed after the surface of the lead-zinc tailings pond is air-dried, with a particle size of 0.07-0.15mm; the urban river bottom mud is the product of high-temperature composting and fermentation of urban sewage treatment plants, The water content is 30-40%; the mineralized waste is the product of screening and fermentation in the municipal waste treatment plant; the agricultural waste (corn stalk) is crushed to a particle size below 1 cm, and decomposed by adding a decomposing agent and water. The water-retaining agent and binder a...

Embodiment 2

[0042] The tailings pond of Hunan Qiaokou lead-zinc mine was selected for ecological restoration, and the tailings ecological restoration matrix and vegetation combination were applied to the slope, slope platform and dry beach reservoir surface of the tailings pond of Hunan Qiaokou lead-zinc mine. The accumulated tailings storage in the tailings pool is 1.49 million tons. At present, the tailings have been piled up to a height of about 277.5m. The stockpiles are large and the pollution is serious. It will cause certain heavy metal pollution to the surrounding farmland soil, and at the same time bring a negative impact on the living environment of the surrounding residents. to a certain extent.

[0043] The slope is between 30-40°, the slope length is 5-10m, and the platform width is 1m; the cumulative construction area is 5000m 2 , The construction season is March-June.

[0044]The composition of the ecological restoration matrix used is: tailings of tailings pond: urban riv...

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Abstract

The invention discloses an ecological restoration matrix of a lead-zinc tailing reservoir. The matrix comprises, by mass, 45-55 parts of tailing reservoir tailings, 20-30 parts of organic matter and 25-35 parts of tailing conditioning agents; the organic matter comprises 20-33 parts of city watercourse sediment, 25-40 parts of mineralized refuse and 33-50 parts of agricultural waste; the tailing conditioning agents comprise 28.6-40 parts of water-retaining agents, 16.7-28.6 parts of adhesives and 40-50 parts of chelating agents; the tailing reservoir tailings are dry beach sediment formed after the surface of the lead-zinc tailing reservoir is dried, and the particle diameter is 0.07-0.15 mm; the city watercourse sediment is products fermented by high temperature composting through a municipal sewage plant, and the water ratio is 30-40 percent; the mineralized refuse is products screened and fermented by the municipal sewage plant; the agricultural waste is smashed until the particle diameter is below 1 cm, and decomposition is performed by adding decomposition agents and water. According to the ecological restoration matrix of the lead-zinc tailing reservoir and a preparation method and application thereof, the rapid ecological restoration of the lead-zinc tailing reservoir is achieved through an ecological restoration technology, therefore, the environmental pollution of the tailing reservoir to surrounding soil can be governed, and the dwelling and living environment of neighboring residents can be improved.

Description

technical field [0001] The invention relates to the fields of ecological restoration, land reclamation and contaminated site restoration of abandoned metal mines. Specifically, the invention relates to an ecological restoration matrix for a lead-zinc tailings pond and a preparation method and application thereof. Background technique [0002] Lead-zinc tailings refer to the waste discharged from the lead-zinc ore after grinding and selecting useful components. It is the part with the lowest content of useful target components in the sorting operation in beneficiation. Lead-zinc tailings contain a variety of harmful components, such as mixed suspended solids, cyanide, pH, heavy metal ions, flotation reagents, etc., which are hazardous wastes. In China's lead-zinc ore producing areas, statistics show that there are 887 lead and 905 zinc deposits, and 27 provinces, districts, and municipalities have discovered and explored reserves. Lead-zinc tailings have the characteristics ...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/00C05G3/80
Inventor 张华王琼周连碧吴亮亮张望孙伟
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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