JPS59123730A - Method for recovering iridium from metallic electrode - Google Patents
Method for recovering iridium from metallic electrodeInfo
- Publication number
- JPS59123730A JPS59123730A JP57227595A JP22759582A JPS59123730A JP S59123730 A JPS59123730 A JP S59123730A JP 57227595 A JP57227595 A JP 57227595A JP 22759582 A JP22759582 A JP 22759582A JP S59123730 A JPS59123730 A JP S59123730A
- Authority
- JP
- Japan
- Prior art keywords
- iridium
- hydrochloric acid
- soln
- added
- coating layer
- 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
- 229910052741 iridium Inorganic materials 0.000 title claims abstract description 21
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011247 coating layer Substances 0.000 claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 239000007800 oxidant agent Substances 0.000 claims abstract description 8
- 229910000457 iridium oxide Inorganic materials 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000002378 acidificating effect Effects 0.000 claims abstract description 5
- 239000003729 cation exchange resin Substances 0.000 claims abstract description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 4
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 4
- 229910000000 metal hydroxide Inorganic materials 0.000 claims abstract description 4
- 150000004692 metal hydroxides Chemical class 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000000243 solution Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 6
- DANYXEHCMQHDNX-UHFFFAOYSA-K trichloroiridium Chemical compound Cl[Ir](Cl)Cl DANYXEHCMQHDNX-UHFFFAOYSA-K 0.000 claims description 6
- -1 alkali metal hydroxide salt Chemical class 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims 1
- 239000002585 base Substances 0.000 abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract description 2
- OZDHQOIPFFBDPL-UHFFFAOYSA-N iridium hydrochloride Chemical compound Cl.[Ir] OZDHQOIPFFBDPL-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract 3
- 239000003456 ion exchange resin Substances 0.000 abstract 1
- 229920003303 ion-exchange polymer Polymers 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 229910052707 ruthenium Inorganic materials 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000012286 potassium permanganate Substances 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- YJZATOSJMRIRIW-UHFFFAOYSA-N [Ir]=O Chemical class [Ir]=O YJZATOSJMRIRIW-UHFFFAOYSA-N 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910001963 alkali metal nitrate Inorganic materials 0.000 description 1
- 150000004973 alkali metal peroxides Chemical class 0.000 description 1
- 150000004974 alkaline earth metal peroxides Chemical class 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、金属電極からイリジウムを回収する方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for recovering iridium from metal electrodes.
近年、チタン等の弁金属基体上にルテニウムやイリジウ
ムの酸化物等を含む電極被覆を設けた不溶性金属電極が
、種々の電気化学の分野、特に食塩電解工業における不
溶性電極として多量に使用されている。In recent years, insoluble metal electrodes in which an electrode coating containing ruthenium or iridium oxides is provided on a valve metal substrate such as titanium have been widely used as insoluble electrodes in various fields of electrochemistry, especially in the salt electrolysis industry. .
このよう含金属電極は、かなシの長寿命を有するもので
おるが、使用中に電極被覆が徐々に消耗或いは低活性化
し、一定の性能を維持できなくなった際には、新しい電
極に取シ替える必要がある。こうした使用済の金属電極
には、周相当量の高価なイリジウム等の貴金属成分が被
覆中に残存し、これを回収し、有効利用することは、工
業上重要である。These metal-containing electrodes have a long lifespan, but if the electrode coating gradually wears out or becomes less active during use, and it becomes impossible to maintain a certain level of performance, it is necessary to replace the electrode with a new one. It needs to be replaced. In such used metal electrodes, an equivalent amount of precious metal components such as expensive iridium remains in the coating, and it is industrially important to recover and effectively utilize this.
従来、この種の技術に関連するものと１７て、特公昭４
６−２６９７８号及び特公昭４８−１５１４４号によシ
、金属電極被覆を溶融塩を用いて除去する方法が知られ
ている。Previously, there were 17 related technologies related to this type of technology.
No. 6-26978 and Japanese Patent Publication No. 48-15144 disclose a method of removing a metal electrode coating using a molten salt.
また、特開昭５１−６８４９３号には、ルテニウム又は
その化合物を含む難溶性物質の可溶化法が、特開昭５１
−６８４９８号には、可溶性ルテニウム又はその化合物
の酸化蒸留法が記載されている。更に、特開昭５１−６
８４９９号にはルテニウム又はその化合物を含む難溶性
物質を処理してルテニウムを回収する方法が示されて込
る。In addition, JP-A No. 51-68493 describes a method for solubilizing poorly soluble substances containing ruthenium or its compounds.
No. 68498 describes an oxidative distillation process for soluble ruthenium or its compounds. Furthermore, JP-A-51-6
No. 8499 discloses a method for recovering ruthenium by treating a poorly soluble substance containing ruthenium or a compound thereof.
しかし、これらの方法は、いずれも金属電極から貴金属
を回収する部分工程か、ルテニウムの回収に関するもの
で、金属電極から被覆中のイリジウムを回収する方法は
知られていなかった。However, all of these methods involve a partial process of recovering precious metals from metal electrodes or recovery of ruthenium, and no method was known for recovering iridium in the coating from metal electrodes.
本発明は、斜上の事情に鑑みてなされたもので、その目
的は、金属電極から容易に、かつ効率良くイリジウムを
回収する方法を提供することにある。The present invention was made in view of the above-mentioned situation, and an object of the present invention is to provide a method for easily and efficiently recovering iridium from a metal electrode.
本発明は、金属電極からイリジウムを回収する方法にお
いて、金属電極基体上のイリジウム酸化物を含む被覆層
を、酸化剤を含むアルカリ金属水酸化物溶融塩に溶解し
、冷却後、水を加えて水溶液とし、塩酸を加えて中和し
、生成する弁金属水酸化物を分離した後、更に塩酸を加
えて該溶液を酸性にし、次いで陽イオン交換樹脂を用い
てアルカリ金属を除去して、イリジウム塩化物の塩酸溶
液を得ることを特徴とするものである。The present invention provides a method for recovering iridium from a metal electrode, in which a coating layer containing iridium oxide on a metal electrode substrate is dissolved in a molten alkali metal hydroxide salt containing an oxidizing agent, and after cooling, water is added. After making an aqueous solution and neutralizing it by adding hydrochloric acid to separate the produced valve metal hydroxide, further adding hydrochloric acid to make the solution acidic, then removing the alkali metal using a cation exchange resin, iridium This method is characterized by obtaining a hydrochloric acid solution of chloride.
本発明において弁金属とは、電極基体又は電極被覆成分
として通常用いられるチタン、タンタル、ジルコニウム
、ニオブを意味する。In the present invention, the valve metal means titanium, tantalum, zirconium, and niobium that are commonly used as electrode substrates or electrode coating components.
以下、本発明をよシ詳細に説明する。Hereinafter, the present invention will be explained in detail.
先ず、酸化イリジウムを含む被覆層を有する使用済等の
金属電極表面を、酸化剤を含むアルカリ金属水酸化物溶
融塩に浸漬等により接触させて、被覆層を溶解、剥離す
る。該酸化剤としては、ＮａＮ０ｍ 、ＫＮＯｓ等のア
ルカリ金属硝酸塩、Ｎａ１Ｏ１，ＫＩＯｌ等のアルカリ
金属過酸化物、アルカリ土類金属過酸化物、過マンガン
酸カリウム等が使用でき、その量は、溶融物全量基準で
約２０Ｘ以下とすることが好ましい。該アルカリ金属水
酸化物としては、ＫＯＨ，ＮａＯＨが好適に用いられる
。溶融塩溶解工程における溶融塩温度は約５５０〜６０
０℃が適当であシ処理時間は通常５〜３０分程度で、電
極基体を損傷することなく容易に被覆層を溶解すること
ができる。First, the surface of a used metal electrode having a coating layer containing iridium oxide is brought into contact with a molten alkali metal hydroxide salt containing an oxidizing agent by immersion or the like to dissolve and peel off the coating layer. As the oxidizing agent, alkali metal nitrates such as NaN0m and KNOs, alkali metal peroxides such as Na1O1 and KIO1, alkaline earth metal peroxides, potassium permanganate, etc. can be used, and the amount thereof is determined based on the total amount of the melt. It is preferable to set it to about 20X or less on a standard basis. As the alkali metal hydroxide, KOH and NaOH are preferably used. The molten salt temperature in the molten salt dissolution step is approximately 550 to 60
A temperature of 0° C. is suitable, and the treatment time is usually about 5 to 30 minutes, and the coating layer can be easily dissolved without damaging the electrode substrate.
次いで、前記溶融塩溶解工程で得られたイリジウムを含
む溶融物を冷却し、水を加えて水溶液とした後、塩酸を
加えて中和する。加える水の量は、溶融物の約２〜１０
倍量とすることが好適である。溶融物水溶液はアルカリ
性であシ、これに塩酸を加えて中性付近に中和して、溶
解していた、被覆層中或は電極基体からの弁金属を水酸
化物として析出・沈澱させる。そして、該生成した弁金
属水酸化物をｒ別等により分離除去した後、更に塩酸を
加えて酸性にし、次に該溶液を陽イオン交換樹脂に接触
させて、共存しているアルカリ金属及び残存弁金属イオ
ン等を完全に除去する。Next, the iridium-containing melt obtained in the molten salt dissolving step is cooled, water is added to form an aqueous solution, and hydrochloric acid is added to neutralize the solution. The amount of water added is approximately 2-10% of the melt
It is preferable to double the amount. The aqueous melt solution is alkaline and is neutralized to around neutrality by adding hydrochloric acid to precipitate the dissolved valve metal in the coating layer or from the electrode base as a hydroxide. After the generated valve metal hydroxide is separated and removed by r separation, etc., hydrochloric acid is added to make it acidic, and then the solution is brought into contact with a cation exchange resin to remove coexisting alkali metals and residual Completely removes valve metal ions, etc.
かくして、イリジウムは、純粋な塩酸溶液として得るこ
とができる。該塩酸溶液中でイリジウムは塩化イリジウ
ム酸イオンの状態で存在していると考えられる。該イリ
ジウム塩酸溶液は、そのｔ″！！、又は温度の濃度に調
製して金属電極の製造用等に再び使用することができ、
更に１〜６５０ ｖａＨｇ ＋ １１０℃以下の条件で
減圧蒸留し、濃縮固化して、塩化イリジウムとして回収
することもできる。また、塩化イリジウムを還元処理し
て金属イリジウムとして回収することも勿論可能である
。一方、被覆層を除去した金属基体は、そのまま電極基
体として再利用することができる。Iridium can thus be obtained as a pure hydrochloric acid solution. It is believed that iridium exists in the form of chloroiridate ions in the hydrochloric acid solution. The iridium hydrochloric acid solution can be adjusted to a concentration of t″!! or temperature and used again for manufacturing metal electrodes, etc.
Furthermore, it can be distilled under reduced pressure under conditions of 1 to 650 vaHg + 110°C or less, concentrated and solidified, and recovered as iridium chloride. Of course, it is also possible to reduce iridium chloride and recover it as metallic iridium. On the other hand, the metal base from which the coating layer has been removed can be reused as it is as an electrode base.
以上、詳記した通シ、本発明の方法によシ、イリジウム
酸化物を含む被覆層を有する金属電極よシ、イリジウム
を容易に高純度で回収することができる。イリジウムの
回収率は、以下の実施例で示す如く、被覆層イリジウム
含有量基準で８５％以上とすることが可能である。As detailed above, by the method of the present invention, iridium can be easily recovered in high purity from a metal electrode having a coating layer containing iridium oxide. As shown in the following examples, the recovery rate of iridium can be 85% or more based on the iridium content of the coating layer.
実施例１゜
溶融塩の溶融剤として水酸化ナトリウム５０？、酸化剤
として過マンガン酸カリウム５ｔを用い、ニッケルルツ
ボ中で５００℃に保持して溶融塩を形成した。これに６
×３個のチタン基体上に酸化イリジウムを含む被覆層を
有する電極を２０分間浸漬したところ、被覆層は完全に
溶融塩中に溶解した。チタン基材を除去した該溶融塩を
室温に冷却し、これに１５０ｃｒ、の水を加え水溶液と
した後、塩酸を加えて中和した。チタン水酸化物等の沈
澱が十分生成する迄、液を放置してから、沈澱物をｒ過
分離し、ｆ液に塩酸を等量加えた。得られた液をＨ型に
した陽イオン交換樹脂層（三菱化成工業■製ＤＩＡＩＯ
Ｎ −８ＫＩＢ ）に通し、ナトリウム、カリウム等の
アルカリ金属イオンを分離除去し、流出液としてイリジ
ウム塩化物の塩酸溶液を得た。Example 1 Sodium hydroxide 50% as a melting agent for molten salt A molten salt was formed by using 5 tons of potassium permanganate as an oxidizing agent and maintaining the temperature at 500° C. in a nickel crucible. 6 for this
When three electrodes having coating layers containing iridium oxide on titanium substrates were immersed for 20 minutes, the coating layers were completely dissolved in the molten salt. The molten salt from which the titanium base material had been removed was cooled to room temperature, 150 cr of water was added thereto to form an aqueous solution, and then hydrochloric acid was added to neutralize it. The solution was allowed to stand until a sufficient amount of precipitate such as titanium hydroxide was formed, and then the precipitate was separated by separation, and an equal amount of hydrochloric acid was added to the solution. A cation exchange resin layer in which the obtained liquid was made into H type (DIAIO manufactured by Mitsubishi Chemical Corporation)
N-8KIB) to separate and remove alkali metal ions such as sodium and potassium to obtain a hydrochloric acid solution of iridium chloride as an effluent.
又、この溶液を１５ｍｍＨｇ 、 ４０℃で減圧蒸留し
塩化イリジウムの固体を得ることもできた。イリジウム
の回収率は８７％であった。In addition, solid iridium chloride could be obtained by distilling this solution under reduced pressure at 15 mmHg and 40°C. The recovery rate of iridium was 87%.
尚、比較のため、酸化剤Ｋ Ｍ ｎ Ｏ４の量を０．５
Ｆにして同様に行ったところ回収率は７２％であった。For comparison, the amount of oxidizing agent K M n O4 was set to 0.5
When the same procedure was carried out using F, the recovery rate was 72%.
実施例Ｚ
酸化剤としてＫＮＯｓ ５りを用いた以外は実施例１と
同様にしてイリジウムの回収を行った。Example Z Iridium was recovered in the same manner as in Example 1 except that KNOs 5 was used as the oxidizing agent.
回収率は８６％であった。The recovery rate was 86%.
実施例６゜
溶融塩の溶融剤としてＫＯＨ５０ｙを用い、他は実施例
１と同様にして、イリジウムの回収を行った。Example 6 Iridium was recovered in the same manner as in Example 1 except that KOH50y was used as the melting agent for the molten salt.
回収率は８９％であった。The recovery rate was 89%.
特許出願人patent applicant
Claims (4)
を、酸化剤を含むアルカリ金属水酸化物溶融塩に溶解し
、冷却後、水を加えて水溶液とし、塩酸を加えて中和し
、生成する弁金属水酸化物を分離した後、更に塩酸を加
えて該溶液を酸性にし、次いで陽イオン交換樹脂を用い
てアルカリ金属を除去してイリジウム塩化物の塩酸溶液
を得ることを特徴とする、金属電極からイリジウムを回
収する方法。(1) A coating layer containing iridium oxide on a metal electrode substrate is dissolved in a molten alkali metal hydroxide salt containing an oxidizing agent, and after cooling, water is added to make an aqueous solution, and hydrochloric acid is added to neutralize it, After separating the produced valve metal hydroxide, hydrochloric acid is further added to make the solution acidic, and then the alkali metal is removed using a cation exchange resin to obtain a hydrochloric acid solution of iridium chloride. , a method for recovering iridium from metal electrodes.
請求の範囲第（１）項の方法。(2) The method according to claim (1), wherein the dissolution with the molten salt is carried out at 350 to 600°C.
える請求の範囲第（１）項の方法。(3) The method according to item (1), wherein 2 to 10 times the amount of water is added to the molten salt after dissolving the coating layer.
Ｈｇ、１１０℃以下で減圧蒸留し、濃縮固化する請求の
範囲第（１）項の方法。(4) The method according to claim (1), wherein a hydrochloric acid solution of iridium chloride is distilled under reduced pressure at 1 to 650 Hg and below 110°C to concentrate and solidify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57227595A JPS59123730A (en) | 1982-12-28 | 1982-12-28 | Method for recovering iridium from metallic electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57227595A JPS59123730A (en) | 1982-12-28 | 1982-12-28 | Method for recovering iridium from metallic electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59123730A true JPS59123730A (en) | 1984-07-17 |
| JPS6254849B2 JPS6254849B2 (en) | 1987-11-17 |
Family
ID=16863382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57227595A Granted JPS59123730A (en) | 1982-12-28 | 1982-12-28 | Method for recovering iridium from metallic electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59123730A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63195230A (en) * | 1987-02-10 | 1988-08-12 | Tanaka Kikinzoku Kogyo Kk | Refining method for platinum group metal |
| JP2002088494A (en) * | 2000-09-13 | 2002-03-27 | Furuya Kinzoku:Kk | Method for recovering platinum group metals from metal electrodes |
| JP2002212650A (en) * | 2001-01-12 | 2002-07-31 | Furuya Kinzoku:Kk | Method for recovering platinum group metals from metal electrodes |
| KR20140098159A (en) | 2011-11-21 | 2014-08-07 | 페르메렉덴꾜꾸가부시끼가이샤 | Method for exfoliating coating layer of electrode for electrolysis |
| WO2016034301A1 (en) * | 2014-09-03 | 2016-03-10 | Heraeus Deutschland GmbH & Co. KG | Process for the preparation and/or purification of ruthenium(iii) chloride |
| EP2998275A1 (en) * | 2014-09-19 | 2016-03-23 | Heraeus Deutschland GmbH & Co. KG | Process for the preparation and/or purification of ruthenium(III) chloride |
| JP2018511707A (en) * | 2015-04-21 | 2018-04-26 | ヘレウス ドイチェラント ゲーエムベーハー ウント カンパニー カーゲー | Method for decomposing a mixture of solid particles of metal iridium and / or iridium oxide |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0627255U (en) * | 1992-09-16 | 1994-04-12 | 矢崎総業株式会社 | Grommet structure |
-
1982
- 1982-12-28 JP JP57227595A patent/JPS59123730A/en active Granted
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63195230A (en) * | 1987-02-10 | 1988-08-12 | Tanaka Kikinzoku Kogyo Kk | Refining method for platinum group metal |
| JP2002088494A (en) * | 2000-09-13 | 2002-03-27 | Furuya Kinzoku:Kk | Method for recovering platinum group metals from metal electrodes |
| JP2002212650A (en) * | 2001-01-12 | 2002-07-31 | Furuya Kinzoku:Kk | Method for recovering platinum group metals from metal electrodes |
| KR20140098159A (en) | 2011-11-21 | 2014-08-07 | 페르메렉덴꾜꾸가부시끼가이샤 | Method for exfoliating coating layer of electrode for electrolysis |
| WO2016034301A1 (en) * | 2014-09-03 | 2016-03-10 | Heraeus Deutschland GmbH & Co. KG | Process for the preparation and/or purification of ruthenium(iii) chloride |
| CN106660827A (en) * | 2014-09-03 | 2017-05-10 | 贺利氏德国有限两合公司 | Method for preparing and/or purifying ruthenium(III) chloride |
| US9994458B2 (en) | 2014-09-03 | 2018-06-12 | Heraeus Deutschland GmbH & Co. KG | Process for the preparation and/or purification of ruthenium(III) chloride |
| EP2998275A1 (en) * | 2014-09-19 | 2016-03-23 | Heraeus Deutschland GmbH & Co. KG | Process for the preparation and/or purification of ruthenium(III) chloride |
| JP2018511707A (en) * | 2015-04-21 | 2018-04-26 | ヘレウス ドイチェラント ゲーエムベーハー ウント カンパニー カーゲー | Method for decomposing a mixture of solid particles of metal iridium and / or iridium oxide |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6254849B2 (en) | 1987-11-17 |
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