JPS62287025A - Method for recovering ruthenium - Google Patents
Method for recovering rutheniumInfo
- Publication number
- JPS62287025A JPS62287025A JP61129302A JP12930286A JPS62287025A JP S62287025 A JPS62287025 A JP S62287025A JP 61129302 A JP61129302 A JP 61129302A JP 12930286 A JP12930286 A JP 12930286A JP S62287025 A JPS62287025 A JP S62287025A
- Authority
- JP
- Japan
- Prior art keywords
- ruthenium
- alkali hydroxide
- free chlorine
- roasted product
- contg
- 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
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910052707 ruthenium Inorganic materials 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 16
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims abstract description 24
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 24
- 239000002699 waste material Substances 0.000 claims abstract description 18
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000460 chlorine Substances 0.000 claims abstract description 17
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 229910001925 ruthenium oxide Inorganic materials 0.000 claims abstract description 7
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 abstract description 13
- 239000002893 slag Substances 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 239000000243 solution Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000005708 Sodium hypochlorite Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- RHLLDTPGTFRJDJ-UHFFFAOYSA-N OCl.OCl Chemical compound OCl.OCl RHLLDTPGTFRJDJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
３、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やその酸化物を含有する廃滓か
らルテニウムを回収する方法に関する。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for recovering ruthenium from waste containing ruthenium metal or its oxides.
金属状態のルテニウム又はその酸化物を含有する廃滓は
、触媒、電極及び電子部品の製造に伴う作業屑、不良品
及び使用済のもの、切削、研磨等従来このような金属ル
テニウムや、その酸化物を含有する廃滓からルテニウム
を溶解する方法としては、特開昭６０−６５７３０号、
％開昭６０−９２４３３号に記載されているように過酸
化ナトリウム又は硝酸カリウムのような酸化剤と水酸化
アルカリの合剤を用いて溶融した後、水を加えて溶解す
る方法がとられている。Waste containing ruthenium in the metallic state or its oxides is waste from the production of catalysts, electrodes, and electronic parts, defective products, used products, cutting, polishing, etc. As a method for dissolving ruthenium from waste containing waste materials, Japanese Patent Application Laid-Open No. 60-65730,
As described in Japanese Patent Publication No. 60-92433, a method is used in which a mixture of an oxidizing agent such as sodium peroxide or potassium nitrate and an alkali hydroxide is used to melt the compound, and then water is added to dissolve the compound. .
これらの廃滓中には炭素あるいは有機物が含まれている
場合が多く、通常前処理として、炭素や有機物の除去の
ために酸化焙焼が行われる。These tailings often contain carbon or organic substances, and oxidative roasting is usually performed as a pretreatment to remove carbon and organic substances.
然しながらグラファイト系炭素Ａ・、例えばＳＩＣやＷ
Ｃのような金属カーバイドが含まれていると通常の焙焼
では分解除去することは出来ず、着た前記酸化性アルカ
リ融剤を用いて浴融することは、発火あるいは爆発の危
険を伴なうため実施できなかった。However, graphite carbon A, such as SIC and W
If metal carbide such as C is included, it cannot be decomposed and removed by normal roasting, and bath melting using the oxidizing alkaline flux that has been added carries the risk of ignition or explosion. could not be implemented due to
また近年取扱いの危険性から過酸化す） ＩＪウムの工
業生産の中止が相ついで価格が高騰している。In addition, in recent years, industrial production of IJum (peroxidized) has been stopped due to the dangers of handling, and the price has soared.
別の方法として特開昭５８−１９４７４５号には金属ル
テニウムを次亜塩素酸塩を用いて溶解する方法が記載さ
れている。しかしこの方法ではルテニウム含有率が高い
場合にはかなシ有効であるが、ルテニウム含有品位が比
較的低い場合には溶解率が低くなる問題点がある。As another method, JP-A-58-194745 describes a method in which metal ruthenium is dissolved using hypochlorite. However, although this method is somewhat effective when the ruthenium content is high, there is a problem in that the dissolution rate is low when the ruthenium content is relatively low.
本発明は前記した問題点を解消し、安全に且つ低コスト
で高い抽出率にて金属ルテニウム又はその酸化物を含有
する廃滓中のルテニウムを溶解させる方法を提供するも
のである。The present invention solves the above problems and provides a method for dissolving ruthenium in waste containing metal ruthenium or its oxides safely, at low cost, and at a high extraction rate.
本発明はこの目的を達成するために１金属ルテニウム及
びルテニウム酸化物の少くとも一方を含有する廃滓を酸
化焙焼し、焙焼物を水酸化アルカリと共に溶融した後、
固化物を遊離塩素を含む水酸化アルカリ水溶液により抽
出するよう圧してルテニウムを回収しようとするもので
ある。In order to achieve this object, the present invention oxidizes and roasts waste containing at least one of monometallic ruthenium and ruthenium oxide, melts the roasted material with alkali hydroxide, and then
Ruthenium is recovered by pressurizing the solidified material to be extracted with an aqueous alkali hydroxide solution containing free chlorine.
廃滓は一般に含有していることが多い水分を先ず蒸発さ
せ、さらにグラファイト系を除く炭素、有機化合物を酸
化分解除去するために、ま九金属状態のルテニウムを酸
化させるために空気中で酸化焙焼するととが行われる。Waste slag is first subjected to oxidative roasting in the air to oxidize ruthenium in the metallic state, in order to first evaporate the water that it often contains, and then oxidize and decompose carbon and organic compounds other than graphite. Baking is done.
焙焼温度、時間はグラファイト系を除く炭素や有機化合
物及び金属状態のルテニウムを酸化させるととが出来れ
ば良く、対象とする廃滓によっても異なるが、一般的に
は６００℃前後で２時間和度焙焼を行なう。The roasting temperature and time should be as long as they can oxidize carbon, organic compounds other than graphite, and ruthenium in the metallic state. They vary depending on the target waste, but in general, roasting is carried out at around 600°C for 2 hours. Perform roasting.
この焙焼工程が不完全でグラファイト系を除く炭素や有
機化合物が残存していると、アルカリ溶融後の遊離塩素
を含む水酸化アルカリ水溶液で抽出する際に、一旦溶解
し九ルテニウムの一部を再還元して析出させることがあ
り、抽出効率が悪く々る。If this roasting process is incomplete and carbon and organic compounds other than graphite remain, they will be dissolved once and some of the ruthenium will be extracted when extracted with an alkali hydroxide aqueous solution containing free chlorine after alkali melting. It may be re-reduced and precipitated, resulting in poor extraction efficiency.
処理する廃滓が粉体の場合には焙焼物が焼結して塊状と
なることが多いので、それ以降の反応効率を向上させる
ために塊状となった焙焼物は−４゜メツシュ程度に粉砕
することが好ましい。When the waste slag to be treated is powder, the roasted material is often sintered and becomes lumpy, so in order to improve the subsequent reaction efficiency, the roasted material that has become lumpy is pulverized to about -4° mesh. It is preferable to do so.
次いで焙焼物は水酸化アルカリと混合して溶融される。The roasted product is then mixed with alkali hydroxide and melted.
水酸化アルカリとしては通常水酸化ナトリウムが用いら
れるが、他のものも使用可能である。との水酸化アルカ
リの添加量は焙焼物の形状により特定できないが、加温
融解した時に焙焼物が融液中に浸漬可能な量であれば良
く、焙焼物が粉砕されているときは焙焼物１重量部に対
し、３・ 〜５重量部が好ましい。As the alkali hydroxide, sodium hydroxide is usually used, but other alkali hydroxides can also be used. The amount of alkali hydroxide added cannot be specified depending on the shape of the roasted product, but it is sufficient as long as the amount allows the roasted product to be immersed in the melt when heated and melted, and if the roasted product is pulverized, It is preferably 3-5 parts by weight per 1 part by weight.
溶融に使用する容器の材質は、鉄、ニッケル、アルミナ
等の通常の溶融に用いられるものでよいが、鉄板製トレ
ーが最も経済的である。この容器に焙焼物と水酸化アル
カリを入れ混合後溶融を行なう。溶融の条件は通常行わ
れている条件で、除徐に昇温し６００〜７００℃で３０
分程度保持すればよい。The container used for melting may be made of any material commonly used for melting iron, nickel, alumina, etc., but a tray made of iron plate is the most economical. The roasted material and alkali hydroxide are placed in this container, mixed, and then melted. The melting conditions are the usual conditions, with gradual heating up to 600-700°C for 30°C.
It is sufficient to hold it for about a minute.
アルカリ溶融によりルテニウムは遊離塩素を含む水酸化
アルカリ水溶液に容易に溶解する状態に変化する。これ
はルテニウム酸化物が水酸化アルカリにより含水化物と
なル膨潤してポーラスな状態となるためと考えられる。By alkali melting, ruthenium changes to a state where it can be easily dissolved in an aqueous alkali hydroxide solution containing free chlorine. This is thought to be because the ruthenium oxide swells into a hydrated product due to the alkali hydroxide and becomes porous.
溶融物は冷却固化後適尚な容器で遊離塩素を含む水酸化
アルカリ水溶液中で加温し°Ｃルテニウムを抽出溶解さ
せる。遊離塩素を含む水酸化アルカリ溶融としては市販
の次亜塩素酸す） ＩＪウム（遊離塩素１２％）をその
まま、あるいは水で希釈して使用するのが一般的である
が、水酸化アルカリの水溶液中に塩素ガスを吸収させた
ものを用いることもできる。溶解条件は対象とする溶融
固化物の形状、性質によっても異なるが、粉状物であれ
ば液温６０−７０℃で５時間和度撹拌するのが好ましい
。After cooling and solidifying, the melt is heated in a suitable container in an aqueous alkali hydroxide solution containing free chlorine to extract and dissolve the ruthenium. As an alkali hydroxide solution containing free chlorine, it is common to use commercially available hypochlorous acid (hypochlorous acid) (12% free chlorine) as it is or diluted with water, but an aqueous solution of alkali hydroxide It is also possible to use one in which chlorine gas is absorbed. The dissolution conditions vary depending on the shape and properties of the target melted solidified product, but if it is a powdered product, it is preferable to stir the mixture gently for 5 hours at a liquid temperature of 60-70°C.
水酸化アルカリ水溶液中の遊離塩素の濃度とルテニウム
の抽出率の関係は一例によれば、遊離塩素濃度１％のと
き抽出率は４１％であ）遊離塩素濃度１．５％、２％の
ときの抽出率は夫々８６％、９９％であ夛、遊離塩素の
濃度は少くとも１．５％以上、好ましくは２％以上とす
るのがよい。According to one example, the relationship between the concentration of free chlorine in an aqueous alkali hydroxide solution and the extraction rate of ruthenium is that when the concentration of free chlorine is 1%, the extraction rate is 41%.) When the concentration of free chlorine is 1.5% and 2%, the extraction rate is 41%. The extraction efficiency is 86% and 99%, respectively, and the concentration of free chlorine is preferably at least 1.5%, preferably 2% or more.
この工程によルテニウム酸化物はルテニウム酸のアルカ
リ塩として液中に抽出される。抽出率は本発明によれば
原料廃滓中のルテニウム含有量の９９％以上の抽出が可
能となる。Through this step, ruthenium oxide is extracted into the liquid as an alkali salt of ruthenic acid. According to the present invention, it is possible to extract 99% or more of the ruthenium content in the raw material waste according to the present invention.
抽出液は不溶解残渣を含有したま＼、あるいは残液を分
離した後、公知の方法例えば蒸留法によりルテニウムを
分離精製回収することができる。The extract may still contain undissolved residues, or after the residual liquid is separated, ruthenium can be separated, purified and recovered by a known method, such as a distillation method.
実施例１
本実施例は酸化焙焼によυ分解できず、従来ルテニウム
を溶解することが極めて困難であった金属カーバイドを
含有するルテニウムを含む廃滓を用いてルテニウムを抽
出する試験を行った。すなわち炭素（活性炭）４９．８
％、ＳｉＣ２７，５％、Ｒｕ２２．７（各重量）Ｘの組
成を有する廃滓を各３、Ｏｇ宛３個の鉄製トレーに入れ
約６００℃にて２時間酸化焙焼し、焙焼物を４０メツシ
ユ以下に粉砕し、各５倍量の水酸化ナトリウムを加えて
混合して元のトレーに移し、電気炉で夫々６００℃、６
５０℃、７００℃で３０分間保持して溶融した。Example 1 In this example, a test was conducted to extract ruthenium using waste slag containing ruthenium, which cannot be decomposed by oxidative roasting and contains metal carbide, which was extremely difficult to dissolve ruthenium in the past. . i.e. carbon (activated carbon) 49.8
%, SiC 27.5%, Ru 22.7 (each weight) Grind each to a mesh size, add 5 times the amount of sodium hydroxide, mix, transfer to the original tray, and heat each in an electric furnace at 600℃ for 60 minutes.
It was held at 50°C and 700°C for 30 minutes to melt.
冷却後融塊はトレーごと５００ ｍｔ のビーカーに移
し、遊離塩素３％を含む次亜塩素酸ナトリウム水溶液を
トレー全部が浸るところまで加え、７０〜８０℃で５時
間溶解した。水溶液は不溶解物を分離した後液中のルテ
ニウム含有量を求めて抽出率を計算したところ、いずれ
も９９％乃至それ以上の値が得られた。After cooling, the molten mass was transferred along with the tray to a 500 mt beaker, and an aqueous sodium hypochlorite solution containing 3% free chlorine was added until the entire tray was submerged, and the mixture was dissolved at 70 to 80°C for 5 hours. After separating the insoluble matter from the aqueous solution, the extraction rate was calculated by determining the ruthenium content in the solution, and in all cases, values of 99% or more were obtained.
比較例１
実施例１と同じ廃滓を使用し、実施例１と同じ条件で酸
化焙焼した後アルカリ溶融することなく、焙焼物を直接
遊離塩素３％を含む次亜塩素酸ナトリウム水溶液で実施
例１と同条件で抽出したととる、ルテニウムの抽出率は
５３％であった。Comparative Example 1 The same waste slag as in Example 1 was used, and after oxidative roasting under the same conditions as in Example 1, the roasted material was directly treated with an aqueous sodium hypochlorite solution containing 3% free chlorine without alkali melting. When extracted under the same conditions as in Example 1, the extraction rate of ruthenium was 53%.
比較例２
実施例１と同じ廃滓を使用し、実施例１と同じ条件で酸
化焙焼した後焙焼物を水素を用いてルテニウムを金属状
態にまで還元し、これを遊離塩・素３％の次亜塩素酸ナ
トリウムを含むように調整した５％水酸化す） ＩＪウ
ム水溶液を用いて７０〜８０℃の温度で５時間抽出した
ら、ルテニウムの抽出率は７７％であった。Comparative Example 2 The same waste slag as in Example 1 was used, and after oxidative roasting under the same conditions as in Example 1, the roasted material was reduced to a metallic state using hydrogen, and this was reduced to 3% free salt. When extraction was performed at a temperature of 70 to 80° C. for 5 hours using a 5% IJ hydroxide aqueous solution adjusted to contain sodium hypochlorite, the extraction rate of ruthenium was 77%.
本発明方法によれば金属ルテニウム又はルテニウム酸化
物を含有する廃滓からルテニウムを回収する際に、従来
実施されていたアルカリ性酸化剤による溶融法あるいは
遊離塩素を含む水酸化アルカリ水溶液で直接抽出する方
法に比して、遥か圧高いルテニウム抽出率を得ることが
できるのでその工業的価値は大なるものがある。According to the method of the present invention, when recovering ruthenium from waste containing ruthenium metal or ruthenium oxide, the conventional method of melting with an alkaline oxidizing agent or the direct extraction method with an aqueous alkali hydroxide solution containing free chlorine Since it is possible to obtain a much higher extraction rate of ruthenium than that of conventional methods, its industrial value is great.
Claims (1)
一方を含有する廃滓を酸化焙焼し、焙焼物を水酸化アル
カリと共に溶融した後、固化物を遊離塩素を含む水酸化
アルカリ水溶液により抽出することを特徴とするルテニ
ウムの回収方法。 ２、焙焼物の溶融用水酸化アルカリの使用量は焙焼物に
対して重量比で３〜５倍であることを特徴とする特許請
求の範囲第１項記載のルテニウムの回収方法。 ３、水酸化アルカリ水溶液中の遊離塩素濃度は２重量％
以上であることを特徴とする特許請求の範囲第１項記載
のルテニウムの回収方法。[Claims] 1. After oxidizing and roasting the waste containing at least one of metal ruthenium and ruthenium oxide, and melting the roasted product with alkali hydroxide, the solidified product is converted into an aqueous alkali hydroxide solution containing free chlorine. A method for recovering ruthenium, characterized by extracting it by. 2. The method for recovering ruthenium according to claim 1, wherein the amount of alkali hydroxide used for melting the roasted product is 3 to 5 times the weight of the roasted product. 3. The free chlorine concentration in the aqueous alkali hydroxide solution is 2% by weight.
The method for recovering ruthenium according to claim 1, characterized in that the method is as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61129302A JPS62287025A (en) | 1986-06-05 | 1986-06-05 | Method for recovering ruthenium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61129302A JPS62287025A (en) | 1986-06-05 | 1986-06-05 | Method for recovering ruthenium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62287025A true JPS62287025A (en) | 1987-12-12 |
| JPH0236655B2 JPH0236655B2 (en) | 1990-08-20 |
Family
ID=15006208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61129302A Granted JPS62287025A (en) | 1986-06-05 | 1986-06-05 | Method for recovering ruthenium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62287025A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007064027A1 (en) | 2005-11-30 | 2007-06-07 | Sumitomo Chemical Company, Limited | Method for production of supported ruthenium and method for production of chlorine |
-
1986
- 1986-06-05 JP JP61129302A patent/JPS62287025A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007064027A1 (en) | 2005-11-30 | 2007-06-07 | Sumitomo Chemical Company, Limited | Method for production of supported ruthenium and method for production of chlorine |
| US7858065B2 (en) | 2005-11-30 | 2010-12-28 | Sumitomo Chemical Company, Ltd. | Process for producing supported ruthenium and process for producing chlorine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0236655B2 (en) | 1990-08-20 |
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