A kind of underground mining technology without tailings pool

Abstract

It is an underground mining technology that does not need to build a tailings pool. It counts the total tailings data produced in the mining area and the remaining tailings data after filling the goaf; plans and selects sand within the preset range of the mining area. Aggregate yard, the empty area formed meets the storage requirements for the remaining tailings; ore and waste rock are mined in the mining area, and the ore is sorted to produce concentrate and tailings; the waste rock and beneficiation produced by mining The produced waste rocks are crushed, and the crushed materials are screened according to the preset size to form sand and gravel aggregates and screening residues; the tailings or screening residues are filled into the goaf. After the ore and waste rock are mined, a goaf containing the tailings is formed. The volume of the goaf meets the storage requirements for the tailings produced by ore sorting and the required cementing materials. A sufficient empty area is formed to fill the tailings produced after mineral processing into the underground, and there is no tailings pond on the surface, which truly realizes a "tailing-free mine". Sand and gravel aggregates can also be sold, which is conducive to environmental protection and national economic construction.

Description

technical field [0001] The invention relates to an underground mine mining technology that does not need to build a tailing pool, and belongs to the technical field of mining. Background technique [0002] Ore can be divided into metallic ore and non-metallic ore according to the nature of the elements contained. Metals are usually divided into two categories: ferrous metals and non-ferrous metals. Except for iron, manganese, and chromium, the existing 83 kinds of metals are called non-ferrous metals, including heavy non-ferrous metals, light metals, precious metals, rare metals, etc. Common ferrous metal ores include iron ore, and non-ferrous metals can be divided into heavy metals (such as copper, lead, zinc), light metals (such as aluminum, magnesium), precious metals (such as gold, silver, platinum) and rare metals (such as tungsten, molybdenum, germanium, lithium, lanthanum, uranium). The raw ore grade of general iron ore (ore grade refers to the content of useful co...

AI Technical Summary

Problems solved by technology

For new tailings ponds, reconstruction and expansion of tailings ponds, the regulatory authorities will not approve the construction of tailings ponds "overhead ponds". In addition, tailings ponds occupy a large area and land use indicators are difficult to approve. There is nowhere to build, which leads to the inability to build mines; some existing mines are under pressure to stop production due to the inability to heighten, expand or build new tailings ponds

Images