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Title |
Development of Wet Process Technology for High-level Reduction of Radioactive Concrete Waste
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Authors |
진동식(Dong-Sik Jin) ; 곽상수(Sang-Soo Kwak) ; 홍용호(Yong-Ho Hong) ; 고봉진(Bong-Jin Ko) |
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DOI |
https://doi.org/10.4334/JKCI.2024.36.6.603 |
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Keywords |
방사성 콘크리트 폐기물; 고도감용; 습식공정; 건식공정; 시멘트 radioactive concrete waste; high-level reduction; wet process; dry process; cement |
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Abstract |
For the development of a wet-process technology for the high-level reduction of radioactive concrete waste, characteristic evaluation experiments were conducted on coarse and fine aggregates generated through a dry process based on heat crushing, using a bench-scale coarse aggregate cleaning device and a fine aggregate cleaning device. In the case of the coarse aggregate cleaning device, it was confirmed that the dissolution rate of residual cement in the coarse aggregate exceeded 98% under optimal conditions. The residual cement content in the coarse aggregate increased slightly when the treatment amount in the reactor was increased and the agitation speed was decreased. For the fine aggregate cleaning device, the dissolution rate of residual cement in the fine aggregate also exceeded 98% under optimal conditions. The residual cement content in the fine aggregate increased slightly when the dissolution time was reduced and the treatment amount in the dissolution tank was increased. These experimental results will be considered when designing and manufacturing a commercial-scale wet-process device.
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