JPH0373895A - Fused salt electrolysis refining device - Google Patents
Fused salt electrolysis refining deviceInfo
- Publication number
- JPH0373895A JPH0373895A JP1209670A JP20967089A JPH0373895A JP H0373895 A JPH0373895 A JP H0373895A JP 1209670 A JP1209670 A JP 1209670A JP 20967089 A JP20967089 A JP 20967089A JP H0373895 A JPH0373895 A JP H0373895A
- Authority
- JP
- Japan
- Prior art keywords
- molten
- metal
- cathode metal
- stirring
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 150000003839 salts Chemical class 0.000 title claims description 20
- 238000007670 refining Methods 0.000 title claims description 15
- 238000005868 electrolysis reaction Methods 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 claims abstract description 63
- 239000002184 metal Substances 0.000 claims abstract description 63
- 238000003756 stirring Methods 0.000 claims abstract description 28
- 239000000446 fuel Substances 0.000 claims description 17
- 239000003792 electrolyte Substances 0.000 claims description 5
- 229910052793 cadmium Inorganic materials 0.000 claims description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052778 Plutonium Inorganic materials 0.000 abstract description 9
- 229910052770 Uranium Inorganic materials 0.000 abstract description 9
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 abstract description 9
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract description 9
- 230000008021 deposition Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000010419 fine particle Substances 0.000 abstract description 4
- 150000002739 metals Chemical class 0.000 abstract description 3
- 238000000151 deposition Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は高速増殖炉の使用済金属燃料を再処理するため
の溶融塩電解精製装置に関するものである。Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a molten salt electrolytic refining device for reprocessing spent metal fuel of a fast breeder reactor.
（従来の技術）
従来、高速増殖炉発電プラントから発生する使用済金属
燃料を再処理して燃料中に含まれるウラン、プルトニウ
ムなどの有用な燃料成分を濃縮回収し、かつ不要な核分
裂生成物を分離する装置として、第３図に示すような溶
融塩電解精製装置が考えられている。(Prior technology) Conventionally, spent metal fuel generated from fast breeder reactor power plants has been reprocessed to concentrate and recover useful fuel components such as uranium and plutonium contained in the fuel, and to remove unnecessary nuclear fission products. As a separation device, a molten salt electrolytic refining device as shown in FIG. 3 has been considered.
すなわち、この溶融塩電解精製装置はカドミウム等の溶
融金属１を陽極とし、この溶融金属（以下溶融陽極金属
という）１中に溶解した使用済金属燃料をＫＣｌ−Ｌｉ
Ｃ１などの溶融塩電解質２中に配置された絶縁容器５内
の溶融陰極金属（例えばカドミウム等）６に電解析出さ
せて使用済金属燃料に含まれるウラン、プルトニウムな
どの燃料成分を陰極析出物として回収するものである。That is, this molten salt electrolytic refining device uses a molten metal 1 such as cadmium as an anode, and uses KCl-Li as the spent metal fuel dissolved in the molten metal (hereinafter referred to as molten anode metal) 1.
Fuel components such as uranium and plutonium contained in the spent metal fuel are electrolytically deposited on a molten cathode metal (for example, cadmium, etc.) 6 in an insulating container 5 placed in a molten salt electrolyte 2 such as C1 as a cathode deposit. It will be collected as such.
なお、図中３は電解槽、４は使用済金属燃）４片を示す
。In addition, in the figure, 3 indicates an electrolytic cell, and 4 indicates four pieces of spent metal fuel.
（発明が解決しようとする課題）
このような溶融塩電解精製装置において、溶融陰極金属
（陰極金属相）６への電解析出を効率よく行なうために
は、溶融塩電解質（塩柑）２中のウラン、プルトニウム
の陽イオンを還元して十分に陰極金属相６中に拡散させ
溶解させる必要がある。しかしながら、この方法につい
ては未だ明らでない。(Problems to be Solved by the Invention) In such a molten salt electrolytic refining device, in order to efficiently perform electrolytic deposition on the molten cathode metal (cathode metal phase) 6, it is necessary to It is necessary to reduce the cations of uranium and plutonium to sufficiently diffuse and dissolve them into the cathode metal phase 6. However, this method is still unclear.
本発明はこのような事情に鑑みてなされたもので、その
目的とするところは溶融陰極金属を用いる溶融塩電解精
製装置において、陰極金属相への電解析出を効率よく行
なうことのできる溶融塩電解精製装置を提供することに
ある。The present invention was made in view of the above circumstances, and its purpose is to provide a molten salt that can efficiently perform electrolytic deposition on the cathode metal phase in a molten salt electrolytic refining device using molten cathode metal. An object of the present invention is to provide an electrolytic refining device.
［発明の構成コ
（課題を解決するための手段）
上記目的を達成するために本発明は、カドミウム等の溶
融金属を陽極とし、この溶融金属中に溶解した使用済金
属燃料を溶融塩電解質中に配置された絶縁容器内の溶融
陰極金属に電解析出させて前記使用済金属燃料に含まれ
る燃料成分を精製回収する溶融塩電解精製装置において
、前記溶融陰極金属を絶縁容器内の中心部付近で下向き
に流動せしめて攪拌する攪拌装置を具備したものである
。[Structure of the Invention (Means for Solving the Problems) To achieve the above object, the present invention uses a molten metal such as cadmium as an anode, and a spent metal fuel dissolved in the molten metal in a molten salt electrolyte. In a molten salt electrolytic refining device that purifies and recovers fuel components contained in the spent metal fuel by electrolytically depositing the molten cathode metal in a molten cathode metal in an insulating container placed in It is equipped with a stirring device that causes the liquid to flow downward and stirs.
（作 用）
本発明においては、陰極金属相の表面に析出してきたウ
ラン、プルトニウムなどの析出金属の微粒子が攪拌装置
の攪拌効果によって絶縁容器内に均一に拡散して溶解す
るので、陽極金属相表面での析出金属の蓄積やそれを核
とする異常な偏析成長を防止でき、陰極金属相への電解
析出を効率よく行なうことができる。(Function) In the present invention, fine particles of precipitated metals such as uranium and plutonium deposited on the surface of the cathode metal phase are uniformly diffused and dissolved in the insulating container by the stirring effect of the stirring device, so that the anode metal phase Accumulation of precipitated metal on the surface and abnormal segregation growth using the precipitated metal as a nucleus can be prevented, and electrolytic deposition to the cathode metal phase can be performed efficiently.
（実施例） 以下、図面を参照して本発明の詳細な説明する。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図は本発明の一実施例を示し、図中１は溶融陽極金
属、２は溶融塩電解質、３は電解槽、４は使用済金属燃
料片、５は絶縁容器、６は溶融陰極金属であり、これら
は第３図に示したものと同一のものである。また、７は
溶融陰極金属６を攪拌するための攪拌装置であり、この
攪拌装置７はモータ８により回転駆動される攪拌軸９の
先端に攪拌羽根１０を取付けて構成されている。FIG. 1 shows an embodiment of the present invention, in which 1 is molten anode metal, 2 is molten salt electrolyte, 3 is an electrolytic tank, 4 is a spent metal fuel piece, 5 is an insulating container, and 6 is molten cathode metal. These are the same as those shown in FIG. Further, 7 is a stirring device for stirring the molten cathode metal 6, and this stirring device 7 is constructed by attaching a stirring blade 10 to the tip of a stirring shaft 9 which is rotationally driven by a motor 8.
第２図は上記攪拌軸９を回転させた状態を示し、絶縁容
器５内の溶融陰極金属６は矢印で示すように絶縁容器５
の中心部付近では攪拌軸９に沿って下向きに流動し、絶
縁容器５の容器壁付近では上向きに流動するようになっ
ている。FIG. 2 shows a state in which the stirring shaft 9 is rotated, and the molten cathode metal 6 in the insulating container 5 is blown into the insulating container 5 as shown by the arrow.
The liquid flows downward along the stirring shaft 9 near the center of the insulating container 5, and upward near the wall of the insulating container 5.
このように溶融陰極金属６が絶縁容器５の中心部付近で
下向きに流動するように攪拌装置７により溶融陰極金属
６を攪拌することにより、陰極金属相６の表面に析出し
てきたウラン、プルトニウムなどの析出金属の微粒子は
攪拌装置７の攪拌効果によって絶縁容器５内に均一に拡
散して溶解する。従って、本実施例では陰極金属相表面
での析出金属の蓄積やそれを核とする異常な偏析成長を
防止でき、陰極金属相６への電解析出を効率よく行なう
ことができる。By stirring the molten cathode metal 6 with the stirring device 7 so that the molten cathode metal 6 flows downward near the center of the insulating container 5, uranium, plutonium, etc., precipitated on the surface of the cathode metal phase 6 are removed. The fine particles of the precipitated metal are uniformly diffused and dissolved in the insulating container 5 by the stirring effect of the stirring device 7. Therefore, in this embodiment, accumulation of precipitated metal on the surface of the cathode metal phase and abnormal segregation growth using it as a nucleus can be prevented, and electrolytic deposition on the cathode metal phase 6 can be performed efficiently.
なお、攪拌装置７による攪拌効果を十分に発揮させるた
めには、攪拌によって陰極金属相６の表面に乱れが生じ
ないように、陰極金属相６の十分な深さが必要であり、
また攪拌装置７の攪拌羽根１０が十分深く位置している
必要がある。Note that in order to fully exhibit the stirring effect of the stirring device 7, the cathode metal phase 6 needs to have a sufficient depth so that the surface of the cathode metal phase 6 is not disturbed by stirring.
Further, the stirring blades 10 of the stirring device 7 need to be located sufficiently deep.
また、陰極金属相の攪拌を行なわない場合と陰極金属相
の上部で攪拌を行なった場合を実験によって試みたが、
前者は陰極金属相表面に電析物が滞留蓄積し、後者は塩
を巻き込んでいずれも良好な電解析出を行なえなかった
。In addition, experiments were conducted in which the cathode metal phase was not stirred and the cathode metal phase was stirred above the cathode metal phase.
In the former case, the deposits remained and accumulated on the surface of the cathode metal phase, and in the latter case, salts were involved, so that good electrolytic deposition could not be performed in either case.
［発明の効果］
以上説明したように本発明によれば、陰極金属相の表面
に析出してきたウラン、プルトニウムなどの析出金属の
微粒子が攪拌装置の攪拌効果によって絶縁容器内に均一
に拡散して溶解するので、陰極金属相への電解析出を効
率よく行なうことができる。従って、ウラン及びプルト
ニウムの回収、効率を高めることができ、経済的に採算
のとれる処理能力をもつ溶融塩電解精製装置を得ること
ができる。[Effects of the Invention] As explained above, according to the present invention, fine particles of precipitated metals such as uranium and plutonium deposited on the surface of the cathode metal phase are uniformly diffused into the insulating container by the stirring effect of the stirring device. Since it dissolves, electrolytic deposition on the cathode metal phase can be carried out efficiently. Therefore, it is possible to improve the recovery efficiency of uranium and plutonium, and to obtain a molten salt electrolytic refining apparatus having an economically profitable processing capacity.
【図面の簡単な説明】
第１図は本発明の一実施例を示す溶融塩電解精製装置の
断面図、第２図は第１図のＡ部を示す詳細図、第３図は
従来の溶融塩電解精製装置の断面図である。
１・・・溶融陽極金属、２・・・溶融塩電解質、３・・
・電解槽、４・・・使用済金属燃料片、５・・・絶縁容
器、６・・・溶融陰極金属、７・・・攪拌装置。
第
２
図[Brief Description of the Drawings] Figure 1 is a cross-sectional view of a molten salt electrolytic refining apparatus showing an embodiment of the present invention, Figure 2 is a detailed view showing part A in Figure 1, and Figure 3 is a conventional molten salt electrolytic refining device. FIG. 2 is a sectional view of a salt electrolytic refining device. 1... Molten anode metal, 2... Molten salt electrolyte, 3...
- Electrolytic tank, 4... Spent metal fuel piece, 5... Insulating container, 6... Molten cathode metal, 7... Stirring device. Figure 2
Claims (1)
溶解した使用済金属燃料を溶融塩電解質中に配置された
絶縁容器内の溶融陰極金属に電解析出させて前記使用済
金属燃料に含まれる燃料成分を精製回収する溶融塩電解
精製装置において、前記溶融陰極金属を絶縁容器内の中
心部付近で下向きに流動せしめて撹拌する攪拌装置を具
備したことを特徴とする溶融塩電解精製装置。A molten metal such as cadmium is used as an anode, and the spent metal fuel dissolved in the molten metal is electrolytically deposited on the molten cathode metal in an insulating container placed in a molten salt electrolyte, so that the spent metal fuel is contained in the spent metal fuel. A molten salt electrolytic refining apparatus for refining and recovering fuel components, characterized in that the molten salt electrolytic refining apparatus is equipped with a stirring device that causes the molten cathode metal to flow downward near the center of an insulating container and stir it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20967089A JP2693593B2 (en) | 1989-08-15 | 1989-08-15 | Molten salt electrorefining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20967089A JP2693593B2 (en) | 1989-08-15 | 1989-08-15 | Molten salt electrorefining equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0373895A true JPH0373895A (en) | 1991-03-28 |
| JP2693593B2 JP2693593B2 (en) | 1997-12-24 |
Family
ID=16576662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20967089A Expired - Lifetime JP2693593B2 (en) | 1989-08-15 | 1989-08-15 | Molten salt electrorefining equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2693593B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5539586A (en) * | 1992-06-16 | 1996-07-23 | Sony Corporation | Method and apparatus for recording digital data on a recording medium by recording ODD-numbered and even-numbered data segments and compressed digital data in distinct recording regions |
| JPH09257986A (en) * | 1996-03-26 | 1997-10-03 | Toshiba Corp | Molten salt electrolytic refining system |
| JP2013170290A (en) * | 2012-02-20 | 2013-09-02 | Toshiba Corp | Molten salt electrolysis apparatus and molten salt electrolysis method |
| CN111364065A (en) * | 2020-03-05 | 2020-07-03 | 中国原子能科学研究院 | Method for preparing uranium by utilizing uranium oxide |
-
1989
- 1989-08-15 JP JP20967089A patent/JP2693593B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5539586A (en) * | 1992-06-16 | 1996-07-23 | Sony Corporation | Method and apparatus for recording digital data on a recording medium by recording ODD-numbered and even-numbered data segments and compressed digital data in distinct recording regions |
| JPH09257986A (en) * | 1996-03-26 | 1997-10-03 | Toshiba Corp | Molten salt electrolytic refining system |
| JP2013170290A (en) * | 2012-02-20 | 2013-09-02 | Toshiba Corp | Molten salt electrolysis apparatus and molten salt electrolysis method |
| CN111364065A (en) * | 2020-03-05 | 2020-07-03 | 中国原子能科学研究院 | Method for preparing uranium by utilizing uranium oxide |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2693593B2 (en) | 1997-12-24 |
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