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Method for preventing mine from generating acid waste water

A technology for acid wastewater and mines, which is applied in the field of mine environmental protection to achieve the effect of preventing erosion, low construction and maintenance costs

Inactive Publication Date: 2004-06-30
刘江浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also individual mines that use a layer of waste rocks and a layer of lime to treat the waste rocks produced by the mines. However, after several years, it is found that the waste rock piles still produce acidic wastewater, and acidic wastewater treatment plants still need to be established to treat the generated waste rocks. acid wastewater treatment; so far there is no effective way to prevent the production of mine acid wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0011] Embodiment two adopts the cement slurry that concentration is 5-80% to carry out saturated spraying to the ore body that contains sulfide, ore heap, waste rock heap, mining operation face and bare slope: when the ore body that is sprayed, ore When there is leakage of cement slurry at the bottom of piles, waste rock piles, exposed slopes, and mining operation surfaces, stop spraying for more than 3 days, which is a cycle, generally for 1 or more cycles, until The cement slurry covers the entire ore body, ore heap, waste rock heap, exposed slope, and the surface of the mining operation face, so that it can no longer seep any water. In order to achieve better results, waterproof materials such as composite plastic films can also be laid, and then sprayed with clean water, maintained, and finally the vegetation can be restored. Subsequent steps are the same as in Embodiment 1, and will not be described in detail here.

Embodiment 3

[0012] Embodiment 3 First use clarified saturated lime emulsion to carry out saturated spraying on the surroundings of sulfide-containing ore bodies, ore heaps, waste rock heaps, exposed slopes, mining operation faces and mining roadways: the time of each spraying It is 1-30 days, and then stops for 1-10 days. It is a cycle, and generally 1 or more cycles should be carried out; the second step uses lime emulsion with a concentration of 0.08-60% to treat sulfide-containing ore bodies and ores. Saturated spraying around heaps, waste rock piles, exposed slopes, mining operation faces and mining roadways: the time of each spraying is 1-10 days, and then stop for 1-15 days, which is a cycle, and generally should be carried out 1 or more than 1 cycle; then use cement slurry with a concentration of 5-80% to perform saturated spraying on sulfide-containing ore bodies, ore heaps, waste rock heaps, mining operations and exposed slopes: when the sprayed When there is leakage of cement sl...

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PUM

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Abstract

The method for preventing mine from producing acidic waste water includes the following steps: adopting lime cream liquor i.e. calcium hydroxide solution and / or cement paste to saturately spray the ore body containing sulfide, ore pile, waste stone pile, bare side slope, mining face and periphery of mining tunnel. In order to obtain better effect laying water-proofing material of composite plastic film, etc. on their surface, and spray-coating dark coating material or bituminous coating layer on the surface of water-proofing material, then using clean water to spray and curing until the ore body, ore pile, waste stone pile, bare side slope, mining face and periphery of mining tunnel do not leak through, finally making vegetation restoration.

Description

technical field [0001] A method for preventing mines from producing acidic wastewater, belonging to the technical field of mine environmental protection, in particular to a method for preventing mines from producing acidic wastewater from sulfide-containing ore bodies, ore heaps, waste rock heaps, exposed slopes, mining operation faces and mining roadways . Background technique [0002] For mines containing sulfide, especially in areas with a lot of rain, due to the combined action of air oxidation, thiophilic bacteria and water, most of the sulfide contained in it will be acidified, resulting in acidic wastewater; acidic wastewater such as If it is not treated, it will bring serious environmental pollution, and because of the high cost of dealing with acidic wastewater, it will bring a heavy economic burden to mining companies; Years will continue to produce acidic wastewater. [0003] At present, the main method for mines to solve acidic was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/66
Inventor 刘江浩
Owner 刘江浩