Eco-environmental treatment methods of non-ferrous metal mine waste rock yard

Abstract

The application discloses a method for treating the ecological environment of waste rock dumps in non-ferrous metal mines. Neutralize and improve the layer; (2) spray the slurry-like buffering and insulating material onto the outer surface of the neutralizing and improving layer through a mud spraying machine to form a buffering and insulating layer; (3) form a vegetation restoration layer on the outer surface of the buffering and improving layer . This method is a wet spraying method, and a slurry sprayer is used to spray high-concentration mixed materials onto the waste rock dump, especially for the neutralization and improvement layer, so that the slurry-like neutralization and improvement material can be better embedded in the waste rock pile In the voids on the outer layer of the site, compared with the existing dry spraying machine spraying, the neutralizing and improving materials can be fully embedded, and there is no problem of a large number of voids. Moreover, because the embedding is sufficient, even the waste rock dump There is slight deformation, and the filler layer is not easy to fail.

Description

technical field [0001] The invention relates to the field of ecological restoration, in particular to a method for treating the ecological environment of waste rock storage yards in nonferrous metal mines. Background technique [0002] Non-ferrous metals are essential basic materials and important strategic materials for national economy, people's daily life, national defense industry, scientific and technological development. One of the characteristics of China's non-ferrous metal resources is that there are many composite ores, and some of them are of low grade. During the mining, smelting and processing of non-ferrous metal ores, a large amount of waste rocks, tailings, slag and other solid wastes are produced. [0003] Non-ferrous metal mine waste rock containing sulfur compounds and various associated metal minerals are easily oxidized and weathered after long-term exposure, which will cause collapse and other accidents. Alkaline, it is difficult to restore vegetation,...

AI Technical Summary

Problems solved by technology

[0003] Non-ferrous metal mine waste rocks containing sulfur compounds and various associated metal minerals are easily oxidized and weathered after long-term exposure, which will cause collapse and other accidents. Alkaline, it is difficult to restore vegetation, poisonous substances are easy to migrate with precipitation leaching, polluting surrounding soil and water

[0004] In order to solve the environmental problems of waste rock dumps in non-ferrous metal mines, the patent document with the authorized announcement number CN102652951B discloses an ecological anti-seepage isolation method for the surface layer of acid metal mine solid waste dumps, using a dry sprayer to spray filling materials to the waste rock piles When the dry spraying machine is spraying, add water to the spray port to mix. This dry spraying form cannot fully mix the filler and water, and the mixture cannot penetrate into the surface space of the waste rock yard well, resulting in insufficient filling. Thoroughly, there will be a lot of voids, which cannot isolate air and water well, and the filling layer has a low degree of adhesion to the surface of the waste rock dump. When the waste rock dump is slightly deformed, the filler layer is prone to failure

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