浅析锆钛矿选矿工艺的辐射防护和辐射环境安全

Brief Analysis on Radiation Protection and Radiation Environment Safety of Zircon Titanium Mining Dressing Process

本文以广东省4个锆钛矿选矿厂的监测结果为依据,分析了此类项目运营过程中的辐射防护和辐射环境安全。锆钛矿原矿、产品锆英砂和副产品独居石中238U、226Ra和232Th含量较高,相应物料所在车间及堆存场地周围环境的γ辐射剂量率也较高,工作人员所受外照射年剂量接近2 mSv;伴生放射性物料在中性条件下浸泡,水溶液中的总α和总β放射性水平变化较小,在酸性条件下(pH=2.5)浸泡,水溶液中的总α和总β放射性水平有明显升高。

Based on the monitoring data of four zirconium-titanium mining concentrators in Guangdong Province,analyze the radiation protection and radiation environmental safety during the operation of such projects.The contents of 238U,226Ra and 232Th in zircon raw ore,zircon sand and by-product monazite are high,and the gamma radiation dose rate of the corresponding material workshop and storage site is also high,The results showed that the annual external radiation dose of the staff was close to 2 mSv/a;the grossαand grossβactivity levels in the aqueous solution changed little when the associated radioactive materials were immersed in neutral conditions,and the grossαand grossβactivity levels in the aqueous solution were significantly increased under acidic conditions(pH=2.5).