JPS6396599A - Method of dissolving metallic ruthenium - Google Patents
Method of dissolving metallic rutheniumInfo
- Publication number
- JPS6396599A JPS6396599A JP61242121A JP24212186A JPS6396599A JP S6396599 A JPS6396599 A JP S6396599A JP 61242121 A JP61242121 A JP 61242121A JP 24212186 A JP24212186 A JP 24212186A JP S6396599 A JPS6396599 A JP S6396599A
- Authority
- JP
- Japan
- Prior art keywords
- ruthenium
- metal
- dissolving
- metallic ruthenium
- dissolving metallic
- 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.)
- Pending
Links
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 title claims description 23
- 238000000034 method Methods 0.000 title claims description 10
- 229910052707 ruthenium Inorganic materials 0.000 title description 19
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 4
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 239000002915 spent fuel radioactive waste Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- -1 ruthenium ions Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は金属ルテニウムの化学的溶解法に関し、使用済
核燃料棒の溶解槽内面に付着する放射性ルテニウムの溶
解除去に有利に適用しうる金属ルテニウムの溶解法に関
する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for chemically dissolving metal ruthenium, and relates to a method for chemically dissolving ruthenium metal, which can be advantageously applied to melting and removing radioactive ruthenium attached to the inner surface of a melting tank of spent nuclear fuel rods. Concerning the method of dissolving ruthenium.
使用済核燃料再処理施設において燃料棒を処理する溶解
槽などの内面に放射性ルテニウムの粒子が付着し、放射
線量率が上昇することがある。したがって保守点検時に
は洗浄を行ない放射能除去をする必要があるが、金属ル
テニウムは白金族元素の一つであり極めて溶解しにくい
物質である。In spent nuclear fuel reprocessing facilities, radioactive ruthenium particles may adhere to the inner surfaces of melting tanks and other facilities that process fuel rods, increasing the radiation dose rate. Therefore, during maintenance and inspection, it is necessary to clean and remove radioactivity, but metal ruthenium is a platinum group element and is extremely difficult to dissolve.
このため、従来の技術として金属ルテニウムの溶解方法
を調べると酸素を含む塩酸に溶解する方法が知られてい
る。この具体的な方法としてはそれは塩酸と共にルテニ
ウムを密封管中に入れ１２５℃に加熱することによシ達
成される。Therefore, as a conventional technique, a method of dissolving metal ruthenium in hydrochloric acid containing oxygen is known. Specifically, this is accomplished by placing ruthenium together with hydrochloric acid in a sealed tube and heating it to 125°C.
金属ルテニウムは酸素を含む塩酸に溶解することが知ら
れているが使用済核燃料再処理施設における機器類はス
テンレス鋼が多く使用されていることから機器の腐食防
止のため酸類、特に塩酸を使用することができない。It is known that metal ruthenium dissolves in hydrochloric acid containing oxygen, but since most of the equipment in spent nuclear fuel reprocessing facilities is made of stainless steel, acids, especially hydrochloric acid, are used to prevent corrosion of the equipment. I can't.
しかし、装置類の洗浄は必要であることから、他の方法
による金属ルテニウムの溶解手段の実現が望まれていた
。However, since it is necessary to clean the equipment, it has been desired to realize a means for dissolving metal ruthenium using other methods.
本発明は上記要望に答えうる新規な金属ルテニウムの溶
解法を提供しようとするものである。The present invention aims to provide a novel method for melting metal ruthenium that can meet the above-mentioned needs.
本発明はこのような問題点を解決するためになされたも
のであって、過マンガン酸カリウムを添加したアルカリ
金属水酸化物溶液によって金属ルテニウムを溶解させる
方法である。The present invention was made to solve these problems, and is a method of dissolving metal ruthenium using an alkali metal hydroxide solution to which potassium permanganate is added.
本発明において使用されるアルカリ金属水酸化物として
は、水酸化カリウム、水酸化ナトリウム及び水酸化リチ
ウムがあげられ、金属ルテニウムの溶解度及び経済性よ
り５〜２０％濃度の水溶液として使用される。。The alkali metal hydroxide used in the present invention includes potassium hydroxide, sodium hydroxide, and lithium hydroxide, and is used as an aqueous solution with a concentration of 5 to 20% due to the solubility of metal ruthenium and economic efficiency. .
また過マンガン酸カリウムは１〜５％濃度となるようア
ルカリ金属水酸化物溶液に添加して使用される。Further, potassium permanganate is used by being added to the alkali metal hydroxide solution to a concentration of 1 to 5%.
金属ルテニウムが溶解する作用は明らかではないがルテ
ニウム金属が酸化剤の作用にょシミ子を失ないルテニウ
ムイオンとなって下記の式によって溶解するものと考え
られる。Although the effect of dissolving metal ruthenium is not clear, it is thought that ruthenium metal becomes ruthenium ions that do not lose their ions under the action of an oxidizing agent and dissolves according to the following formula.
Ｒｕ −一→Ｒｕ”＋ ８ｅ 〔実施例〕 本発明の詳細な説明する。Ru −1 → Ru”+ 8e 〔Example〕 The present invention will be described in detail.
（１）金属ルテニウム溶解液組成
（２）溶解条件
上記溶解液中に金属ルテニウム粉末１００ｍｇを混入し
た後加熱沸とうさせて１時間ごとに溶液中のルテニウム
を分析して溶解度を調べた。(1) Composition of metal ruthenium solution (2) Dissolution conditions 100 mg of metal ruthenium powder was mixed into the above solution, heated to boiling, and ruthenium in the solution was analyzed every hour to determine solubility.
このときの溶解度曲線を第１図に示す。The solubility curve at this time is shown in FIG.
第１図によると８時間で８０％の溶解量が得られ、第１
図の曲線の傾むきから溶解は更に時間を延長するともつ
と進行することが判る。According to Figure 1, 80% of the dissolution amount was obtained in 8 hours, and the first
It can be seen from the slope of the curve in the figure that dissolution progresses as the time is further extended.
放射性物質の処理施設において、容器などの機器に付着
する金属ルテニウムを溶解洗浄させることが可能となり
放射能汚染の低減に寄与することができる。In radioactive material processing facilities, metal ruthenium attached to equipment such as containers can be dissolved and cleaned, contributing to the reduction of radioactive contamination.
第１図は金属ルテニウムの溶解度曲線を示す。 復代理人 内 １） 明 復代理人 萩 原 亮 − 復代理人 安 西 篤 夫 ５容解飼間（Ｈｒ） FIG. 1 shows the solubility curve of ruthenium metal. Sub-agent: 1) Akira Sub-agent Ryo Hagi Hara - Sub-agent Atsuo Yasunishi 5-cell release period (Hr)
Claims (1)
ルカリ金属水酸化物溶液によつて溶解することを特徴と
する金属ルテニウムの溶解法。A method for dissolving ruthenium metal, which comprises dissolving ruthenium metal in an alkali metal hydroxide solution to which potassium permanganate is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61242121A JPS6396599A (en) | 1986-10-14 | 1986-10-14 | Method of dissolving metallic ruthenium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61242121A JPS6396599A (en) | 1986-10-14 | 1986-10-14 | Method of dissolving metallic ruthenium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6396599A true JPS6396599A (en) | 1988-04-27 |
Family
ID=17084609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61242121A Pending JPS6396599A (en) | 1986-10-14 | 1986-10-14 | Method of dissolving metallic ruthenium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6396599A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6527622B1 (en) | 2002-01-22 | 2003-03-04 | Cabot Microelectronics Corporation | CMP method for noble metals |
| US6589100B2 (en) | 2001-09-24 | 2003-07-08 | Cabot Microelectronics Corporation | Rare earth salt/oxidizer-based CMP method |
| US6852632B2 (en) | 1999-08-13 | 2005-02-08 | Cabot Microelectronics Corporation | Method of polishing a multi-layer substrate |
| US7097541B2 (en) | 2002-01-22 | 2006-08-29 | Cabot Microelectronics Corporation | CMP method for noble metals |
| US7288021B2 (en) | 2004-01-07 | 2007-10-30 | Cabot Microelectronics Corporation | Chemical-mechanical polishing of metals in an oxidized form |
| EP2431434A1 (en) | 2004-07-28 | 2012-03-21 | Cabot Microelectronics Corporation | Polishing Composition for Noble Metals |
-
1986
- 1986-10-14 JP JP61242121A patent/JPS6396599A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6852632B2 (en) | 1999-08-13 | 2005-02-08 | Cabot Microelectronics Corporation | Method of polishing a multi-layer substrate |
| US6589100B2 (en) | 2001-09-24 | 2003-07-08 | Cabot Microelectronics Corporation | Rare earth salt/oxidizer-based CMP method |
| US6527622B1 (en) | 2002-01-22 | 2003-03-04 | Cabot Microelectronics Corporation | CMP method for noble metals |
| US7097541B2 (en) | 2002-01-22 | 2006-08-29 | Cabot Microelectronics Corporation | CMP method for noble metals |
| US7288021B2 (en) | 2004-01-07 | 2007-10-30 | Cabot Microelectronics Corporation | Chemical-mechanical polishing of metals in an oxidized form |
| EP2431434A1 (en) | 2004-07-28 | 2012-03-21 | Cabot Microelectronics Corporation | Polishing Composition for Noble Metals |
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