Removal device for radioactive cesium
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United States of America Patent
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May 16, 2017
Grant Date -
May 28, 2015
app pub date -
Jun 19, 2013
filing date -
Jun 29, 2012
priority date (Note) -
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Abstract
To provide a device for removing radioactive cesium from waste material containing radioactive cesium, doing so at low energy and in a dependable manner. The removal device 1 for radioactive cesium is provided with: a rotary kiln 41 which is provided with a burner 41b supplying from the kiln outlet an organic matter O3 contaminated with radioactive cesium, and an inorganic matter charging port 41a supplying from the kiln inlet inorganic matter S4 contaminated with radioactive cesium, and which is employed to burn the organic matter O3 together with the inorganic matter S4; and a recovery device cooling tower 51, a cyclone 52, a bag filter 53 for recovering cesium that has volatilized in the rotary kiln. A drying/crushing device (dryer 21, crusher 22) for drying and crushing the organic matter O1 prior to charging the radioactive cesium-contaminated organic matter to the rotary kiln can be provided. Additionally, a reforming/drying/crushing device (reformer 31, dryer 32, crusher 23) for reforming, drying, and crushing the inorganic matter S1 can be provided. During burning of the organic matter O3 together with the inorganic matter S4, a calcium source can be added as a reaction accelerant A to the rotary kiln.
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