Breakthrough progress has been made in one of the

Breakthrough progress has been made in one of the ten bottleneck technologies in the nuclear industry

recently, the Atomic Energy Institute successfully completed the 72 hour continuous operation test of the cold crucible glass solidification experimental platform. This operation test is a milestone node in the second stage research of the cold crucible glass curing technology in China, which has laid a solid foundation for the establishment of the two-step cold crucible glass curing platform and the engineering application of the technology in the future.

recently, the Atomic Energy Institute successfully completed the 72 hour continuous operation test of the cold crucible glass curing platform with real vibration effects: 1. Strength of the structure 2. Loosening of the binding compound 3. Wear test platform of protective materials. This operation test is a milestone in the second stage research of the cold crucible glass solidification technology in China, which lays a solid foundation for the establishment of the two-step cold crucible glass solidification cold bench and the engineering application of the technology in the future, and improves the research level of the Institute's high-level radioactive waste cold crucible glass solidification technology as a whole

in this test, a total of 1100 kg of simulated high-level liquid waste product glass and 6 cans of pouring product containers were produced, with a production capacity of about 15 kg/h, of which the single pouring capacity of glass can reach 35 kg/h. Since the launch of the project in October 2014, the members of the research group have worked together and worked hard to overcome the technical problems of key processes such as startup, weekly melting and unloading, overcome the difficulties in the design and processing of key equipment such as high-frequency induction heating, stirring, cooling and tail gas treatment, and completed the 24-hour linkage test at the end of 2017

cold crucible glass solidification technology is a new type of glass solidification technology mainly used in the treatment of high-level nuclear waste liquid in the world at present. It has been gradually applied to the solidification treatment of medium and low-level nuclear waste liquid. The technical principle is to use the power supply to generate high-frequency current, and then convert it into electromagnetic current through the induction coil. The company will look for a more effective new production method to reduce the production cost, penetrate into the materials to be heated, form eddy currents to generate heat, and realize the direct heating and melting of the materials to be treated. Cold crucible glass solidification technology has the advantages of high melting temperature, long furnace life, wide application range, many types of waste treatment, low decommissioning cost, etc. it is the preferred process technology for high-level liquid waste treatment in China, and is listed as one of the ten bottleneck technologies in the nuclear industry

since 2004, under the leadership of CNNC, the IAEA has carefully organized a project team to systematically study the cold crucible glass curing technology. During the research, the IAEA adheres to the technical innovation route of "small core and large cooperation", focuses on the core needs of high-level liquid waste post-treatment, makes overall use of various technical resources, has basically mastered the key technology of cold crucible glass solidification for high-level liquid waste treatment, and has established the first domestic principle experimental prototype and a laboratory scale device with a production capacity of kg/h. There is still a certain corresponding relationship between the tolerance grade and the surface roughness value

new materials such as cold crucible glass in China are a solid and zigzag structural material. The research and development of curing technology is divided into four stages: basic research, key technology research, cold bench research and engineering research, and is now in the key technology research stage. It is expected that by 2025, our institute can fully master the two-step cold crucible glass solidification engineering technology with complete intellectual property rights, form a cold crucible glass solidification equipment supply chain, and realize the ability to independently design, build and operate cold crucible glass solidification facilities