Emission-free production method of underground metal mine
A production method and emission-free technology, applied in underground mining, surface mining, earth-moving drilling, etc., can solve the problems of increasing environmental restoration operation procedures and operating costs, destroying vegetation, and being untimely, so as to eliminate hidden dangers of debris flow disasters, The effect of reducing management costs and improving environmental benefits
Inactive Publication Date: 2011-09-28
CHINA MINMETALS CHANGSHA MINING RES INST
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Problems solved by technology
This mine production method discharges the waste rock to the waste rock field and the tailing mortar to the tailing sand reservoir, which inevitably pollutes the surface environment and destroys vegetation. The waste rock field and tailing sand reservoir structures formed occupy a large amount of land and increase The operating procedures and operating costs of environmental restoration; the environmental restoration of waste rock dumps and tailings reservoirs often needs to be closed or after the service period of waste rock dumps and tailings reservoirs expires, which will inevitably cause environmental damage during mine production. damage, and it is also difficult to implement reversible restoration, so the environmental restoration of mines is seriously incomplete and untimely
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[0012] Below in conjunction with accompanying drawing and embodiment the present invention is further described:
[0013] The application object of the emission-free underground metal mine production method described in this embodiment is an underground mining mine of a high-sulfur lead-zinc deposit. Due to the high sulfur content of the ore, the output rate of beneficiation tailings is reduced by recycling sulfur, which is about 30% of the ore amount; in order to reduce the output of waste rock, the output rate of waste rock is effectively reduced by adopting the method of mining within the vein , which is about 10% of the amount of mined ore, so the output of mine tailings and waste rock can basically maintain a balance with the volume of the goaf. The process system of the production method includes: shaft excavation 1, stope mining 2, ore transportation 3, dressing plant ore dressing 4, excavation waste rock underground transfer 5, dressing tailings reduction goaf 6, ore d...
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The invention provides an emission-free production method of an underground metal mine, which mainly comprises the processes of excavation, stoping, transfer of barren rock to a gob underground, ore conveying, ore dressing on the selected site, stage reuse of ore dressing wastewater, gob recovery with the tail sand of ore dressing, and the like. The emission-free production method of an underground metal mine provided by the invention is a closed-loop cleaning production mode which only outputs products; during the mine production, the produced barren rock, tail sand and wastewater are all utilized in combination with the production processes of ore product extraction and selection; a mine earth surface tailing sand reservoir and a barren rock site are not required; zero emission of solid waste and wastewater of the mine is realized; and the land occupation and pollution on earth surface environment caused by the solid waste and wastewater of the mine are thoroughly eliminated.
Description
technical field [0001] The invention relates to an emission-free production method for underground metal mines. Background technique [0002] Metal mines produce mineral products that meet the requirements of downstream industries through mining and dressing operations. In the process of producing mineral products in existing underground metal mines, the main production operations such as shaft excavation, mining, mineral processing, waste discharge and environmental restoration are often involved. The production method composed of these operations includes the following production operations: (1) The development system and quasi-mining system from the surface to the ore body are formed by tunneling; (2) Cutting and mining of the ready-for-mining ore body are carried out by adopting appropriate mining methods; (3) Closing or filling or caving management is carried out on the goaf; (4) Transport the excavation waste rocks out of the underground to discharge the surface waste...
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IPC IPC(8): E21C41/16
Inventor 周爱民
Owner CHINA MINMETALS CHANGSHA MINING RES INST