The measurement of material level change in uranium fluorination has an essential influence on uranium production quality. In this study, a method to determine the level change of uranium fluorination mixture in the hopper by online radiation meter outside hopper is established. We have designed an experiment to study the change of radiation field outside the hopper with a known height of radioactive material to discover its regular pattern. The experimental results show that when the probe is placed 50 mm away from the cylinder wall, the average radiation dose is more significant, and the change of radiation dose measured by the instrument at this position is more evident than that at other positions. Then through the measurement of the external radiation field of the hopper with unknown material level to estimate the material level, and by opening the cover of hopper to verify the accuracy of the material level measurement method. Based on the experimental results and theoretical analysis, a method and formula for judging the mixture material are proposed. This method can quickly determine the level of uranium fluoride mixture in the hopper online, realize the accurate control of material parameters in the process of uranium conversion, and improve the quality of uranium conversion products.

铀氟化过程中材料水平变化的测量对铀生产质量具有重要影响。在这项研究中，建立了一种通过料斗外部的在线辐射计确定料斗中铀氟化混合物水平变化的方法。我们设计了一个实验，以研究具有已知高度放射性物质的料斗外部辐射场的变化，以发现其规则模式。实验结果表明，将探头放置在距圆柱壁50 mm处时，平均辐射剂量更为显着，并且在此位置仪器测量的辐射剂量变化比在其他位置更明显。然后，通过测量料位未知的料斗的外部辐射场来估算料位，并通过打开料斗的盖子来验证料位测量方法的准确性。根据实验结果和理论分析，提出了一种判断混合料的方法和公式。该方法可以快速在线确定料斗中氟化铀混合物的含量，实现铀转化过程中物料参数的准确控制，提高铀转化产品的质量。