Method for producing high-density bentonite pellets using dry shrinkage
-
- NAKASHIMA Hitoshi
- Institute of Technology, Shimizu Corporation
-
- SAITO Akira
- Institute of Technology, Shimizu Corporation
-
- ISHII Takashi
- Institute of Technology, Shimizu Corporation
Bibliographic Information
- Other Title
-
- 乾燥収縮を利用したベントナイトペレットの製造方法
- カンソウ シュウシュク オ リヨウ シタ ベントナイトペレット ノ セイゾウ ホウホウ
Search this article
Abstract
A gap surrounding the buffer material in an HLW repository should be filled in an appropriate way. Pellets made of bentonite are expected to be a candidate material for filling the gap. Using higher density bentonite pellets increases the probability that the gap is filled high density. Conventional methods of making bentonite pellets using compressive force are possible to high density pellets in response to the magnitude of compression. However, there are still room for improvement in terms of shape and ease of production. We have devised a newly method for making bentonite pellets using dry shrinkage. We have verified that spherical pellets could be made under high water content and plastic conditions. Subsequently, we have revealed that spherical pellets with a high water content would turn into high density pellets with a dry density of about 2.0Mg/m3 if treated appropriately in the drying process.
Journal
-
- Journal of Nuclear Fuel Cycle and Environment
-
Journal of Nuclear Fuel Cycle and Environment 21 (2), 83-94, 2014
Division of Nuclear Fuel Cycle and Environment, Atomic Energy Society of Japan
