WO2016169674A1 - Verfahren zum aufschluss eines metallisches iridium und/oder iridiumoxid umfassenden gemischs von feststoffpartikeln - Google Patents
Verfahren zum aufschluss eines metallisches iridium und/oder iridiumoxid umfassenden gemischs von feststoffpartikeln Download PDFInfo
- Publication number
- WO2016169674A1 WO2016169674A1 PCT/EP2016/053818 EP2016053818W WO2016169674A1 WO 2016169674 A1 WO2016169674 A1 WO 2016169674A1 EP 2016053818 W EP2016053818 W EP 2016053818W WO 2016169674 A1 WO2016169674 A1 WO 2016169674A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- iridium
- weight
- parts
- sodium
- aqueous solution
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
- C22B11/042—Recovery of noble metals from waste materials
- C22B11/044—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
-
- 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
Definitions
- the present invention relates to a process for the digestion of a mixture of solid particles comprising metallic iridium and / or iridium oxide.
- the aim of the process is the complete digestion of the iridium and the recovery of an aqueous solution which allows further purification and recovery of iridium or iridium compounds.
- Iridium oxide means here and in the following sequence lr2O3 and / or lrO2.
- Difficult ceremoniesschliessende mixtures of inorganic solid particles containing metallic iridium and / or iridium oxide at a Botiridiumanteil of 20 to 99 wt .-% (weight%) in the mixture can come from various sources.
- such mixtures may be ore concentrates from ore processing or residues containing iridium
- iridium fine substances are in particular mixtures of solid particles which consist of
- present metal selected from the group of metals of
- the metal oxides of component (D) are oxides of the metals of component (B), alkali metal oxides and / or alkaline earth metal oxides; around
- Component (D) are solids.
- component (E) comprises neither (i) acidic substances such as acids, acid salts, acid anhydrides or the like, nor (ii) substances oxidizable by means of sodium peroxide or sodium nitrate on fire or even explosion, such as inorganic reducing agents.
- the at least one of (A) to (D) different inorganic substance of component (E) can for example from (i) solid non-metal oxides such as silica, (ii) simple or complex salts such as silicates, sulfides, phosphides, sulfites, phosphites , Sulfates, phosphates and metallates, (iii) from
- component (E) is essentially solids, i. the component (E) consists of 95 to 100 wt .-%, preferably 99 to 100 wt .-%, in particular completely of solids.
- the iridium fine does not comprise component (F).
- it may contain> 0 to 1% by weight of component (F), but then generally for technical reasons and therefore unavoidable.
- the iridium-fine mixtures are practically homogeneous, not least as a consequence of the absolute grain sizes of the solid particles constituting them
- Solid particles may comprise one or more of components (A) to (F).
- iridium fine The processing of iridium fine is known for the purpose of digesting the iridium contained therein by means of dry chlorination or alkaline oxidative melt with KOH. These processes are time consuming and expensive; In addition, potassium can be used in the
- the Applicant has successfully tried to decompose iridium fine by means of a NaOH / Na2O2 melt alkaline oxidative.
- NaOH / Na2O2 melts are very aggressive, even steels and therefore conventional equipment attacking and therefore unfavorable media.
- the present invention consists in a process for the digestion of iridium fine, comprising the steps:
- Parts by weight is 100 parts by weight, (b) cooling the digestion material formed in step (a) to 20 to 70 ° C,
- step (d) boiling the acidic aqueous solution obtained in step (c) until the formation of nitrous gases has ceased
- step (e) of separating insoluble constituents from the acidic aqueous solution can take place.
- halogen used in the specification and claims,
- Haldrohalic acid or “halogenated acid” mean bromine and / or chlorine, preferably chlorine, hydrobromic acid and / or hydrochloric acid, preferably
- step (a) of the process according to the invention 1 part by weight
- the combination comprises 45 to 60
- the combination includes
- the Iridiumfeine can be added at any time, for example, before, during and / or after complete melting of the sodium hydroxide or the
- step (a) Melt in or up to this stage of the process step (a) in the range of, for example, 400 to 450 ° C. Subsequently, the sodium nitrate or not yet added proportion of the sodium nitrate and the sodium peroxide are added, taking into account the usually occurring temperature increase; Preferably, a temperature in the melt of 580 ° C is not exceeded.
- the melt thus obtained is brought to a temperature in the range of, for example, 600 to 660 ° C and held there for example for 2 to 5 hours, preferably with mixing, for example, stirring.
- the digestion material formed in step (a) is cooled to 20 to 70 ° C, where it solidifies. It may be expedient to still transfer the digestion material as a melt into one or more containers in which the subsequent process step (c) takes place and to allow the cooling to take place therein.
- the cooling process is usually passive without supporting cooling.
- Hydrohalic acid eg 8N to 12N-hydrohalic acid until an acidic aqueous solution having a pH in the range of -1 to +1 added.
- a weight ratio of digestion material: water: 8N to 12N-hydrohalic acid used during process step (c) may be in the range of 1: 2-5: 3-10.
- the digestion material is suspended in the aqueous phase, for example by stirring.
- the acidic aqueous solution or, more precisely, the acidic aqueous solution which is free of insoluble constituents and which has already been liberated or can still be liberated, is dissolved in
- Process step (d) of the process according to the invention is boiled until the end of the formation of nitrous gases (NO x ), ie at the boiling point.
- the end of the formation of nitrous gases can be monitored visually and, if desired, additionally analytically, for example by determining the nitrite and nitrate content in the aqueous solution.
- the boiling which serves in addition to the removal of nitrite or nitrate as nitrous gases and a concentration, water and / or
- Hydrohalic acid are added to keep the pH in the range of -1 to +1.
- the cooking process usually takes 5 to 15 hours.
- the inventive method can if necessary a
- Step (e) include. Should the digestion material thus contain small amounts of components which are insoluble in the acidic aqueous solution, or the acidic aqueous solution obtained in process step (c) should contain small amounts of insoluble constituents, for example in an amount similar to that used in process steps (a) and (b ) obtained digestion material of the order of up to 5 wt .-%, these constituents can be separated in this optional process step (e). In this case, it is possible to use customary solid-liquid separation processes known to the person skilled in the art, for example decanting, siphoning off, filtering off or suitable combinations of such separation processes. Process step (e) can take place before or after process step (d).
- the process according to the invention is distinguished by a high iridium recovery rate in the acidic aqueous solution obtained in process step (d).
- the recovery rate is 97-100%, based on the iridium contained in the iridium fine used in process step (a).
- the method according to the invention allows complete or at least almost complete digestion of iridium fine with regard to the conversion of iridium contained therein into an aqueous solution.
- the acidic aqueous solution obtained in process step (d) permits a further purification and recovery of iridium or iridium compounds by means of customary processes known to the person skilled in the art.
- the melt was poured into two melting tanks. After cooling to 20 ° C, the solidified melt was mixed with a total of 1000 l of water and resuspended for 4 hours.
- the strongly alkaline suspension thus obtained was adjusted in a kettle with 1400 l of 10N hydrochloric acid with jacket cooling to a pH of -0.5. The temperature rose to 70 ° C.
- the solution thus obtained was boiled over a period of 12 hours with the release of nitrous gases, wherein in order to maintain the pH of the solution of -0.5 a total of further 900 l of 10N hydrochloric acid were added. Thereafter, the solution was filtered.
- the recovery rate for iridium was 97% (calculated from the inductively coupled plasma emission (ICP) iridium content of the acidic solution with respect to the iridium fine containing 9% by weight iridium).
- ICP inductively coupled plasma emission
- composition according to X-ray fluorescence analysis (RFA), each in wt .-%: 53 iridium, 2.8 aluminum, 6.1 platinum, 2.6 iron, 3.3 silicon, 0.8 chromium, 0.3 nickel) was added.
- 80 kg of sodium peroxide were added in portions, whereby the temperature of the melt increased.
- the temperature was raised to 610 ° C and held for a period of 5 hours.
- the melt was poured into two melting tanks. After cooling to 20 ° C, the solidified
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Catalysts (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017553373A JP6486499B2 (ja) | 2015-04-21 | 2016-02-24 | 固体粒子の金属イリジウムおよび/または酸化イリジウムを含む混合物を分解する方法 |
| CA2978067A CA2978067C (en) | 2015-04-21 | 2016-02-24 | Method for breaking down a solid particle mixture containing iridium metal and/or iridium oxide |
| US15/566,332 US10590511B2 (en) | 2015-04-21 | 2016-02-24 | Process for digestion of a metallic iridium- and/or iridium oxide-comprising mixture of solid particles |
| KR1020177027504A KR101959159B1 (ko) | 2015-04-21 | 2016-02-24 | 금속 이리듐 및/또는 이리듐 산화물을 포함하는 고체 입자의 혼합물을 분해하기 위한 방법 |
| CN201680023016.1A CN107532230B (zh) | 2015-04-21 | 2016-02-24 | 将包含铱金属和/或铱氧化物的固体颗粒混合物消解的方法 |
| AU2016251343A AU2016251343B2 (en) | 2015-04-21 | 2016-02-24 | Method for breaking down a solid particle mixture containing iridium metal and/or iridium oxide |
| ZA2017/07701A ZA201707701B (en) | 2015-04-21 | 2017-11-14 | Process for digestion of a metallic iridium- and/or iridium oxide-comprising mixture of solid particles |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15164448.1A EP3085796B1 (de) | 2015-04-21 | 2015-04-21 | Verfahren zum aufschluss eines metallisches iridium und/oder iridiumoxid umfassenden gemischs von feststoffpartikeln |
| EP15164448.1 | 2015-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016169674A1 true WO2016169674A1 (de) | 2016-10-27 |
Family
ID=52997916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2016/053818 Ceased WO2016169674A1 (de) | 2015-04-21 | 2016-02-24 | Verfahren zum aufschluss eines metallisches iridium und/oder iridiumoxid umfassenden gemischs von feststoffpartikeln |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US10590511B2 (de) |
| EP (1) | EP3085796B1 (de) |
| JP (1) | JP6486499B2 (de) |
| KR (1) | KR101959159B1 (de) |
| CN (1) | CN107532230B (de) |
| AU (1) | AU2016251343B2 (de) |
| CA (1) | CA2978067C (de) |
| PL (1) | PL3085796T3 (de) |
| TW (1) | TWI591186B (de) |
| WO (1) | WO2016169674A1 (de) |
| ZA (1) | ZA201707701B (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115369426A (zh) * | 2021-05-21 | 2022-11-22 | 中国石油化工股份有限公司 | 氯铱酸的制备方法 |
| KR102807893B1 (ko) * | 2022-07-06 | 2025-05-14 | 희성촉매 주식회사 | 이리듐 촉매 및 이의 제조 방법 |
| CN118225532B (zh) * | 2024-05-21 | 2024-08-20 | 贵研检测科技(云南)有限公司 | 一种金属铱粉试样的快速溶解方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002470A (en) * | 1974-12-10 | 1977-01-11 | The Japan Carlit Co., Ltd. | Process for recovering ruthenium |
| US6458183B1 (en) * | 1999-09-07 | 2002-10-01 | Colonial Metals, Inc. | Method for purifying ruthenium and related processes |
| GB2413323A (en) | 2004-04-22 | 2005-10-26 | Johnson Matthey Plc | Improvements to processes for the preparation of iridium acetate |
| EP2090669A2 (de) * | 2008-01-30 | 2009-08-19 | W.C. Heraeus GmbH | Verfahren zum Gewinnen von Ruthenium aus Ruthenium oder Rutheniumoxide enthaltenden Materialien oder rutheniumhaltigen Edelmetall-Erzkonzentraten |
| JP2009235513A (ja) * | 2008-03-27 | 2009-10-15 | Dowa Eco-System Co Ltd | ルテニウムの回収方法 |
| KR20100131238A (ko) * | 2009-06-05 | 2010-12-15 | 성일하이텍(주) | 루테늄 함유 폐스크랩으로부터 루테늄의 회수 방법 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59123730A (ja) * | 1982-12-28 | 1984-07-17 | Permelec Electrode Ltd | 金属電極からイリジウムを回収する方法 |
| JPS59145739A (ja) * | 1983-02-10 | 1984-08-21 | Permelec Electrode Ltd | 金属電極からルテニウム及びイリジウムを回収する方法 |
| US4557906A (en) * | 1984-11-07 | 1985-12-10 | Gte Products Corporation | Recovery of rhenium |
| JP2001064734A (ja) * | 1999-08-27 | 2001-03-13 | Nikko Materials Co Ltd | イリジウムの回収方法 |
| WO2008059770A1 (en) | 2006-11-15 | 2008-05-22 | Semiconductor Energy Laboratory Co., Ltd. | Method for collecting metal |
| JP5021331B2 (ja) * | 2007-02-16 | 2012-09-05 | 田中貴金属工業株式会社 | 廃棄物からの白金族金属の回収方法 |
| CN101445872B (zh) * | 2007-11-27 | 2010-12-22 | 中国蓝星(集团)股份有限公司 | 一种从含钌、铱、钛、锡、锆或钯的混合氧化物中提取贵金属铱的方法 |
| KR101114491B1 (ko) * | 2009-09-15 | 2012-02-24 | 성일하이텍(주) | 백금족원소의 회수방법 |
-
2015
- 2015-04-21 EP EP15164448.1A patent/EP3085796B1/de active Active
- 2015-04-21 PL PL15164448T patent/PL3085796T3/pl unknown
-
2016
- 2016-02-24 CN CN201680023016.1A patent/CN107532230B/zh active Active
- 2016-02-24 US US15/566,332 patent/US10590511B2/en active Active
- 2016-02-24 CA CA2978067A patent/CA2978067C/en active Active
- 2016-02-24 KR KR1020177027504A patent/KR101959159B1/ko active Active
- 2016-02-24 WO PCT/EP2016/053818 patent/WO2016169674A1/de not_active Ceased
- 2016-02-24 AU AU2016251343A patent/AU2016251343B2/en not_active Expired - Fee Related
- 2016-02-24 JP JP2017553373A patent/JP6486499B2/ja active Active
- 2016-03-28 TW TW105109736A patent/TWI591186B/zh active
-
2017
- 2017-11-14 ZA ZA2017/07701A patent/ZA201707701B/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002470A (en) * | 1974-12-10 | 1977-01-11 | The Japan Carlit Co., Ltd. | Process for recovering ruthenium |
| US6458183B1 (en) * | 1999-09-07 | 2002-10-01 | Colonial Metals, Inc. | Method for purifying ruthenium and related processes |
| GB2413323A (en) | 2004-04-22 | 2005-10-26 | Johnson Matthey Plc | Improvements to processes for the preparation of iridium acetate |
| EP2090669A2 (de) * | 2008-01-30 | 2009-08-19 | W.C. Heraeus GmbH | Verfahren zum Gewinnen von Ruthenium aus Ruthenium oder Rutheniumoxide enthaltenden Materialien oder rutheniumhaltigen Edelmetall-Erzkonzentraten |
| JP2009235513A (ja) * | 2008-03-27 | 2009-10-15 | Dowa Eco-System Co Ltd | ルテニウムの回収方法 |
| KR20100131238A (ko) * | 2009-06-05 | 2010-12-15 | 성일하이텍(주) | 루테늄 함유 폐스크랩으로부터 루테늄의 회수 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2978067A1 (en) | 2016-10-27 |
| US10590511B2 (en) | 2020-03-17 |
| KR20170125898A (ko) | 2017-11-15 |
| JP2018511707A (ja) | 2018-04-26 |
| TWI591186B (zh) | 2017-07-11 |
| AU2016251343A1 (en) | 2017-09-28 |
| JP6486499B2 (ja) | 2019-03-20 |
| EP3085796B1 (de) | 2017-07-19 |
| EP3085796A1 (de) | 2016-10-26 |
| AU2016251343B2 (en) | 2018-08-09 |
| CA2978067C (en) | 2019-03-19 |
| CN107532230A (zh) | 2018-01-02 |
| ZA201707701B (en) | 2018-11-28 |
| US20180112290A1 (en) | 2018-04-26 |
| TW201700736A (zh) | 2017-01-01 |
| KR101959159B1 (ko) | 2019-03-15 |
| CN107532230B (zh) | 2019-03-15 |
| PL3085796T3 (pl) | 2017-12-29 |
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