JP6467574B2 - MoO3から99mTcを熱分離精製する方法及びその装置 - Google Patents
MoO3から99mTcを熱分離精製する方法及びその装置 Download PDFInfo
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- JP6467574B2 JP6467574B2 JP2014264756A JP2014264756A JP6467574B2 JP 6467574 B2 JP6467574 B2 JP 6467574B2 JP 2014264756 A JP2014264756 A JP 2014264756A JP 2014264756 A JP2014264756 A JP 2014264756A JP 6467574 B2 JP6467574 B2 JP 6467574B2
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- moo
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- oxygen
- milking
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- 238000000926 separation method Methods 0.000 title claims description 26
- 238000000034 method Methods 0.000 title claims description 18
- 238000000746 purification Methods 0.000 title claims description 7
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 title description 4
- 238000011084 recovery Methods 0.000 claims description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 239000010453 quartz Substances 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 14
- 239000013078 crystal Substances 0.000 description 13
- 229910052697 platinum Inorganic materials 0.000 description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 229910001882 dioxygen Inorganic materials 0.000 description 6
- 210000002268 wool Anatomy 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000011109 contamination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910000953 kanthal Inorganic materials 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- GKLVYJBZJHMRIY-OUBTZVSYSA-N Technetium-99 Chemical compound [99Tc] GKLVYJBZJHMRIY-OUBTZVSYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001612 separation test Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
Description
a) 99Mo を含む多量のMoO3試料に対しては、99mTcの回収率が25〜50%と低いこと。
b) 分籬(ミルキング)回数が増えると回収率が激減すること。
c) 放射性同位体99Tc(基底状態)を含む21gのMoO3試料に対し、64%〜99%の99Tc回収率を得ている事例では、ルツボ(MoO3試料を入れる容器)中の溶融MoO3厚は1mm程度以下(例えば0.8mm)に抑える必要がある。この厚さでは、100g程度以上の放射性同位体99Moを含む多量のMoO3試料の使用には、10×5cm2 程度の大きなルツボを持つ電気炉を5台以上用いる必要があり、経費と操作の負担が大きいこと。
2は水冷ジャケット付3ゾーン電気炉、
3は石英製外筒管、
4は石英製内筒管、
5は試料ホルダ、
6は白金ルツボとMoO3試料、
7はMoO3針状結晶捕集用トラップ、
8はMoO3針状結晶捕集用コルツウールトラップ、
9はカンタル発熱体、
10は断熱材、
11は試料支持台、
12は99mTcを回収する回収ホルダ、
13は金ワイヤー、
14は酸素ガス排出口、
15及び16は99mTc回収ホルダ用上下駆動装置
Claims (5)
- 複数個のルツボが縦方向に多層に配置された電気炉を用い、該電気炉内に酸素を含むガスを流しつつ、前記ルツボにおいて99Moを含むMoO3試料を溶融し、多数回のミルキングを行って、MoO3から99mTcを熱分離精製する方法。
- 請求項1に記載の方法において、前記酸素を含むガスが、湿気を帯びた酸素を含むガスであることを特徴とするMoO3から99mTcを熱分離精製する方法。
- 請求項1または2に記載の方法において、前記電気炉の内部が複数のゾーンに分けられ、それぞれのゾーンの温度をコントロールすることにより、任意の温度分布を得ることを特徴とするMoO3から99mTcを熱分離精製する方法。
- 縦方向に設けられた複数個のゾーン毎に温度制御が可能な発熱体を有する電気炉と、該電気炉の内部に縦方向に多層配置された、99Moを含むMoO3試料を溶融するための複数個のルツボと、該ルツボ周囲に酸素を含むガスを導入させる手段と、ミルキングによって得られた99mTcを回収する回収ホルダとを備えた、MoO3から99mTcを熱分離精製する装置。
- 請求項4に記載の装置において、前記酸素を含むガスは、水バブラーを通して加湿された酸素を含むガスであることを特徴とするMoO3から99mTcを熱分離精製する装置。
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JP6554753B1 (ja) * | 2019-03-11 | 2019-08-07 | 株式会社京都メディカルテクノロジー | テクネチウム99m単離システム及びテクネチウム99m単離方法 |
Family Cites Families (6)
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JPS503479B2 (ja) * | 1972-06-08 | 1975-02-05 | ||
JPS5233280B2 (ja) * | 1974-02-07 | 1977-08-26 | ||
JPH01132723A (ja) * | 1987-11-17 | 1989-05-25 | Tanaka Kikinzoku Kogyo Kk | 合金成分の単離方法 |
JPH01132722A (ja) * | 1987-11-17 | 1989-05-25 | Tanaka Kikinzoku Kogyo Kk | 合金成分の単離方法 |
JP5427483B2 (ja) * | 2009-06-19 | 2014-02-26 | 株式会社化研 | 放射性医薬品およびその標識化合物原料としての放射性テクネチウムの濃縮および溶出回収方法、およびシステム |
JP6478558B2 (ja) * | 2014-10-20 | 2019-03-06 | 株式会社日立製作所 | 放射性薬剤製造システム、放射性薬剤製造装置および放射性薬剤の製造方法 |
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