Cement curing formulation and method for high-level radioactive boron waste resins from nuclear reactor

US9443628B2 · kind B2 · utility

Assignees

• CHINA GENERAL NUCLEAR POWER GROUP · CN
• Dayabay Nuclear Power Operations and Management Co. · CN
• Guangdong Nuclear Power Joint Venture Co., Ltd. · CN
• Lingao Nuclear Power Co., Ltd. · CN

Inventors

• Ying Zhao · Wuxi, CN
• Laixi Huang · Tangxia, CN
• Yucai Ye · Tangxia, CN
• Ge Gao · Beijing, CN
• Yongdong Ye · Tangxia, CN
• Caiyuan Deng · Tangxia, CN
• Zhigang Zhang · Hunan, CN
• Jianchun Yuan · Tangxia, CN

Key dates

• Filing date: Nov 25, 2011
• Grant date: Sep 13, 2016
• Expiry date: May 8, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/91
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A cement curing formulation and curing method for high-level radioactive boron waste resins from a nuclear reactor. The curing formulation comprises the following raw materials: cement, lime, water, curing aids and additives. The curing method comprises: (1) weighing the raw materials and the high-level radioactive boron waste resins, and adding lime into a curing container; (2) then adding the high-level radioactive boron waste resins; (3) feeding other raw materials under stirring; (4) adding the cement and supplementing water depending on the moisture state of the cement, and stirring until uniform; and (5) standing and maintaining after stirring until uniform. The curing formulation has the features of a high curing containment rate, high strength of the cured body, better water resistance, better freeze-thaw resistance, and low radioactive leakage.