JP2018132499A - 放射性焼却灰の固化材及びその固化方法 - Google Patents
放射性焼却灰の固化材及びその固化方法 Download PDFInfo
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- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical group [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 11
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 11
- 239000000460 chlorine Substances 0.000 claims description 8
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- 229910052801 chlorine Inorganic materials 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
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- 229910052792 caesium Inorganic materials 0.000 description 13
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 11
- 239000000941 radioactive substance Substances 0.000 description 9
- -1 Chlorine ions Chemical class 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
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- 238000004898 kneading Methods 0.000 description 5
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- 238000009826 distribution Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- NCMHKCKGHRPLCM-UHFFFAOYSA-N caesium(1+) Chemical compound [Cs+] NCMHKCKGHRPLCM-UHFFFAOYSA-N 0.000 description 3
- 238000010828 elution Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
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- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
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- 150000001768 cations Chemical class 0.000 description 1
- TVFDJXOCXUVLDH-RNFDNDRNSA-N cesium-137 Chemical compound [137Cs] TVFDJXOCXUVLDH-RNFDNDRNSA-N 0.000 description 1
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- 239000010941 cobalt Substances 0.000 description 1
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- 231100000817 safety factor Toxicity 0.000 description 1
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- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
1.使用材料
焼却灰:一般ごみの焼却灰であり、化学組成(Cl以外は酸化物表示)を表1に示した。
セメント:太平洋セメント社製普通ポルトランドセメント(以下、OPC)
分散剤:ラサ工業社製ヘキサメタリン酸ナトリウム(以下、SHMP)
有機系分散剤:ポリカルボン酸系エーテル系高性能AE減水剤(SP)
水:イオン交換水
テーブルミキサーで焼却灰と水を2分間混練りし、SHMP又はSPを添加した。配合等は表2のとおりである。
固化体形成時の膨張によるひび割れ抑止して、放射性物質を安定に保持できる高強度の固化体が得られた。
Claims (4)
- 放射性焼却灰の固定に用いる、ヘキサメタリン酸塩およびセメントを含むことを特徴とする固化材。
- 前記ヘキサメタリン酸塩がヘキサメタリン酸ナトリウムであり、前記放射性焼却灰が高塩分濃度の可溶性塩類を含有することを特徴とする請求項1記載の固化材。
- 前記放射性焼却灰は、乾燥重量換算で、100質量部に対して、3〜40質量部の塩素分を含む可溶性塩類を含み、前記セメント固化部分(前記セメントと水分の合量で、セメント水和物と未水和物の合量)が、80〜300重量部、前記ヘキサメタリン酸塩が0.1〜3.5重量部であることを特徴とする固化材。
- 塩素分が、5〜30質量部の可溶性塩類を含む、乾燥状態換算で100重量部の放射性焼却灰に対して、水分を50〜150重量部、ヘキサメタリン酸ナトリウム0.2〜2.5部、及びセメント70〜200部を添加して混合した後、この混合物を処分容器に移して固化することを特徴とする放射性焼却灰の固化方法。
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Cited By (2)
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KR102060442B1 (ko) * | 2018-11-07 | 2019-12-30 | 성신양회(주) | 방사화 폐기물 처분용 시멘트 고화 조성물 |
CN114719268A (zh) * | 2022-03-15 | 2022-07-08 | 中核四川环保工程有限责任公司 | 一种固化低放有机废液焚烧热解灰的方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102060442B1 (ko) * | 2018-11-07 | 2019-12-30 | 성신양회(주) | 방사화 폐기물 처분용 시멘트 고화 조성물 |
CN114719268A (zh) * | 2022-03-15 | 2022-07-08 | 中核四川环保工程有限责任公司 | 一种固化低放有机废液焚烧热解灰的方法 |
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