包头市某稀土尾矿库辐射环境监测与分析

Abstract

Abstract: The radiation environment level of a typical rare earth tailing pond in Baotou City is monitored and analyzed. The results show that the average γ-radiation dose rate of the slag in the tailings dam is 680.3 nGy/h, which is about 6.6 times of the average background γ-radiation dose rate in Baotou city. The Th-232 activity concentration in soil samples was from 36.1 to 364.7 Bq/kg during the three monitoring years, which was within the normal fluctuation range compared with the national monitoring range in 2019. The average activity concentration of Th-232 in the tailing pond was 1.417 Bq/g. The tailing reservoir should be strictly supervised to avoid the spread of radioactive contamination. The circulating water of tailing pond workshop formed by tailing pond seepage contains a very small amount of radioactive thorium, and its thorium nuclide concentration is similar to the local groundwater background level during the monitoring period.

Key words: tailing pond, gamma radiation dose rate, thorium nuclide, radiation environment

CLC Number:

X837

WU Dong. Radiation environment monitoring and analysis of a rare earth tailing pond in Baotou[J].RADIATION PROTECTION, 2025, 45(4): 349-354.

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Radiation environment monitoring and analysis of a rare earth tailing pond in Baotou

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