锆英砂及锆英粉的放射性测试

The Radioactivity Test of Zircon Ore and the Powder

文章对锆英矿砂及其矿粉的放射性测试中的一些问题进行了论述、研究和探讨。结果表明:采用碘化钠γ能谱仪测试锆英砂、锆英粉及硅酸锆的放射性,测试时间可以定为5000s;距离探测器表面高度不同的同质量同形状的锆英砂,测得的放射性结果是不同的;锆英砂、锆英粉及硅酸锆的放射性测试结果,受其粒径大小、堆积密度以及探测器和样品盒带来的空间因素等方面的影响;对于同一种样品,装样量不同,也会带来测试结果的偏差。

This paper discusses, studies and analyze some problems in the radioactivity test of zircon ore and the powder. The results show that the radioactivity of zircon sand, zircon powder and zirconium silicate can be measured by sodium iodide gamma-ray spectrometer for 5,000 seconds, the results of zircon sand of the same quantity and shape with different height from the surface of the detector are different. The results of radioactivity test of zircon sand, zirconium powder and zirconium silicate are affected by the particle size, bulk density and the spatial factors brought by the detector and the sample box;for the same substance, the different loading amount will also lead to the deviation of test results.