Engineering Problems of EGU Process for HTGR Gel Microspheres

Hu Fengqi; Niu Xiaoping; Deng Changsheng; Ma Jingtao; Hao Shaochang

doi:10.13832/j.jnpe.2018.01.0075

Volume 39 Issue 1

Feb. 2025

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Hu Fengqi, Niu Xiaoping, Deng Changsheng, Ma Jingtao, Hao Shaochang. Engineering Problems of EGU Process for HTGR Gel Microspheres[J]. Nuclear Power Engineering, 2018, 39(1): 75-78. doi: 10.13832/j.jnpe.2018.01.0075

Citation:

Hu Fengqi, Niu Xiaoping, Deng Changsheng, Ma Jingtao, Hao Shaochang. Engineering Problems of EGU Process for HTGR Gel Microspheres[J]. Nuclear Power Engineering, 2018, 39(1): 75-78. doi: 10.13832/j.jnpe.2018.01.0075

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Engineering Problems of EGU Process for HTGR Gel Microspheres

doi: 10.13832/j.jnpe.2018.01.0075

1. China North Nuclear Fuel Co. Ltd., HTR Nuclear Fuel Element Plant, Baotou, Inner Mongolia, 014035, China;
2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China

Received Date: 2017-03-05
Rev Recd Date: 2017-11-29

Available Online: 2025-02-09

Publish Date: 2025-02-09

Abstract

Abstract

China North Nuclear Fuel Co. Ltd（CNNC） built a HTGR nuclear fuel element production line. In this production line, the gel ball is mainly prepared by external gelation of uranium process（EGU）. In the engineering research process, the problems such as the paste liquid deposition and the gel liquid flow can not be controlled accurately during Sol-gel, and gel ball cracks occur. In order to solve these engineering problems, the gel ball preparation process and equipment were optimized and modified, and 10 batches of UO₂ kernels were tested and verified. The results show that the improved production line can achieve continuous and stable industrial production, and the qualified UO₂ kernel products are over 80%.
- HTGR,
- Sol-Gel,
- EGU,
- Gel ball,
- Engineering