Residual Cobalt Ratio during Arc Plasma Melting Treatment of Low Level Radioactive Wastes Containing Nickel
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- Furukawa Shizue
- Central Research Institute of Electric Power Industry
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- Ikeda Kouichi
- Central Research Institute of Electric Power Industry
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- Kotari Masashi
- Central Research Institute of Electric Power Industry
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- Amakawa Tadashi
- Central Research Institute of Electric Power Industry
Bibliographic Information
- Other Title
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- ニッケル系金属放射性廃棄物のアークプラズマ溶融処理時におけるコバルト残存率
- ニッケルケイ キンゾク ホウシャセイ ハイキブツ ノ アークプラズマ ヨウユウ ショリジ ニ オケル コバルト ザンソンリツ
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Description
The plasma melting treatment of low level radioactive waste is currently in practical use. This treatment is applied to typical radioactive wastes such as carbon steel and concrete to produce a solidified product. The scaling factor method is used to evaluate the concentrations of radio-nuclides in the product. Because cobalt (Co) plays a particularly important role, it is important to clarify the behavior of Co during the treatment. In this report, we investigated the residual Co ratio in the slag produced during the plasma melting treatment of a nickel alloy. We found that a residual Co ratio of less than 10% was achieved in the slag when a Ni concentration of less than 80 wt% and a Fe concentration of more than 20 wt% was kept in the molten metal. The effect of the reduction of Co oxides by Fe on the residual Co ratio was the most dominant among the Co oxidation/reduction reactions occurring in the molten melt.
Journal
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- IEEJ Transactions on Fundamentals and Materials
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IEEJ Transactions on Fundamentals and Materials 136 (7), 414-420, 2016
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001204600016128
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- NII Article ID
- 130005160693
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- NII Book ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL BIB ID
- 027541111
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed