水泥企业^(222)Rn的排放水平研究

^(222)Rn emission level in a cement plant

本研究采用RAD-7测氡仪对水泥厂生料粉磨、水泥粉磨等主要生产工艺排放口^(222)Rn浓度进行连续测量。测量结果及数据分析表明:水泥厂^(222)Rn年排放量为87.78 GBq/a,单位产量的归一化排放量为66 GBq/Mt;根据^(226)Ra-^(222)Rn平衡分析,^(222)Rn理论最大排放量为127.4 GBq/a,归一化排放量为95.78 GBq/Mt。

The RAD-7 radon detector was used to continuously measure the concentration of ^(222)Rn at the discharge outlet of the main production processes such as raw meal grinding and cement grinding in a cement plant.According to the measurement results and data analysis,the annual ^(222)Rn emissions of cement plants was 87.78 GBq/a,and the normalized emission was 66 GBq/Mt per unit output;According to the ^(226)Ra-^(222)Rn balance analysis,the theoretical maximum emission of ^(222)Rn was 127.4 GBq/a,and the normalized emission was 95.78 GBq/Mt.