高温气冷堆用石墨机械磨损颗粒粒径分析

Analysis of Graphite Particle Size Under Mechanical Wear in High Temperature Gas-cooled Reactor

针对高温气冷堆3种典型堆用石墨材料,通过机械磨损的方法取样石墨颗粒,采用粒度分析仪进行颗粒粒径分析,得到石墨颗粒粒径分布特征,并同已有的联营高温气冷堆和10 MW高温气冷堆的相关数据进行比较,讨论该方法的可行性以及为后续高温气冷堆石墨粉尘行为研究提供支持。结果表明:高温气冷堆典型堆用石墨材料因磨损产生的颗粒粒径特征与机械磨损条件有直接关系,相同磨损条件下不同石墨材料产生的颗粒粒径具有类似的分布特征。

For three kinds of typical graphite materials used in high temperature gas-cooled reactor, three graphite particles samples were got though mechanical wear. Particle size analyzer was used for the measuring of particle size distribution characteristics. The results of measurement were compared with the results of AVR and HTR-10, and the feasibility of this method used for the follow-up high temperature gas-cooled reactor graphite dust behavioral research was discussed. The results showed that the particle size characteristics of typical graphite materials in high temperature gas-cooled reactor had a direct relation with mechanical wear. The particle size distributions of different graphite materials had the similar distribution characteristics in the same wear conditions.