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Molybdenum mining cause environmental pollution

Radioactive pollution source is caused by the waste rock containing natural radionuclides when start molybdenum mining. China’s molybdenum mining waste is rock carbonaceous shale and the mining ratio is about 1:50, in addition to a small number for the tunnel backfill, the rest mainly efflux or piling outdoors which takes up a lot of land. The radiation produced by the decay of radioactive elements in the waste rock pollution of the environment, improve the local environmental gamma radiation levels. At the same time, due to the erosion of rain, the radio nuclides in the waste rock into the soil and groundwater, so the surrounding’s heavy metals and radium-226, thorium-232, potassium -49 levels increased, and transferred to the surface of plant, resulting in its α, β total increase, and then cause the radioactive contamination of the food chain.

Molybdenum mining wastewater: mining waste water associated with the wet mined by the trenches discharge, waste rock yard rainwater and leaching process wastewater. Wastewater contains a large number of radio nuclides become another radioactive sources of pollution, sewage flows into the receiving water body, improve the waters of the natural radionuclide concentration, radionuclide transfer into the human body through drinking water, flora and fauna, will choose different deposition site, such as radium-226 after ingestion mostly deposited in the bone tissue, and issued by the radioactive nucleus and sub out α, β rays harmful to human caused sustained, long-term irradiation, which induce a variety of related diseases.

Ore, waste rock, wastewater precipitation of radio active and gas radon into the atmosphere, dispersed to everywhere to pollute air, radon constitute a radioactive aerosol, floating in the air, associated mine and yards in the air, there is a higher concentration of radon. Radon into the human body through the breath will cause damage to humans, and even cancer.

Of course, the report learned, if adopt strict environmental protection measures and programs, various types of pollution emissions will achieve environmental control indicators.

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