Solidification of waste containing sodium borate by hydrothermal hot-pressing

被引：0
|
作者：
Yamasaki, Nakamichi [1 ]
Yanagisawa, Kazumichi [1 ]
Kinoshita, Koki [1 ]
Kashiwai, Toshihiko [1 ]
机构：
[1] Kochi Univ, Japan
来源：
Nippon Genshiryoku Gakkaishi/Journal of the Atomic Energy Society of Japan | 1988年 / 30卷 / 08期
关键词：
Ceramic Materials--Hot Pressing;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Powder of Na2B4O7, a simulated low-level radioactive waste concentrate discharged from PWR power plants, was successfully immobilized into a borosilicate glass matrix by hydrothermal hot-pressing. Waste forms with high waste contents up to 55% were produced. Addition of Ca(OH)2 to a starting powder reduced leachability of waste forms. Solid powder of Na3PO4&middot12H2O gave water which was essential to the solidification by hydrothermal hot-pressing. The optimum conditions to produce a waste form with high mechanical strength and low leachability, were determined.
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页码：714 / 724
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