JPS6320423A - Method for recovering noble metallic element - Google Patents
Method for recovering noble metallic elementInfo
- Publication number
- JPS6320423A JPS6320423A JP16645886A JP16645886A JPS6320423A JP S6320423 A JPS6320423 A JP S6320423A JP 16645886 A JP16645886 A JP 16645886A JP 16645886 A JP16645886 A JP 16645886A JP S6320423 A JPS6320423 A JP S6320423A
- Authority
- JP
- Japan
- Prior art keywords
- noble metal
- contg
- extraction
- complex
- alkyloxime
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 229910052751 metal Inorganic materials 0.000 title description 4
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 18
- 238000000638 solvent extraction Methods 0.000 claims abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- 239000011574 phosphorus Substances 0.000 claims abstract description 5
- 239000012074 organic phase Substances 0.000 claims description 9
- -1 alkyl oxime Chemical class 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 150000004696 coordination complex Chemical class 0.000 claims description 4
- 238000000605 extraction Methods 0.000 abstract description 7
- 125000000217 alkyl group Chemical group 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 abstract 1
- 230000003252 repetitive effect Effects 0.000 abstract 1
- 239000010970 precious metal Substances 0.000 description 9
- 239000012071 phase Substances 0.000 description 5
- 239000008346 aqueous phase Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000010406 interfacial reaction Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- IYFCZUKVNNVJIJ-UHFFFAOYSA-N n-(2-ethylhexylidene)hydroxylamine Chemical compound CCCCC(CC)C=NO IYFCZUKVNNVJIJ-UHFFFAOYSA-N 0.000 description 1
- WHXCGIRATPOBAY-UHFFFAOYSA-N n-hexan-2-ylidenehydroxylamine Chemical compound CCCCC(C)=NO WHXCGIRATPOBAY-UHFFFAOYSA-N 0.000 description 1
- YOIWSDLNGMVRLR-UHFFFAOYSA-N n-hexylidenehydroxylamine Chemical compound CCCCCC=NO YOIWSDLNGMVRLR-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は貴金属元素の回収方法、さらに詳しくいえば、
特定の加速剤を用いて、貴金属元素を含有する溶液から
、該貴金属元素を効果的に回収する方法に関するもので
ある。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for recovering precious metal elements, more specifically,
The present invention relates to a method for effectively recovering noble metal elements from a solution containing the noble metal elements using a specific accelerator.
ｐｔＳＰｄ、Ａｇなどの貴金属元素は装飾品に限らず、
触媒やめっきなど、工業的にも極めて重要な元素である
が、その存在量は決して多くなく、各種産業廃棄物から
これらの貴金属を回収することは必要不可欠である。特
に自動車の排ガス触媒や化学薬品製造用触媒には、鉱石
中の含有率を上回るほどの貴金属が含有されているため
、使用済みとなった該触媒から貴金属を回収することは
、社会的な緊急課題となっている。Precious metal elements such as ptSPd and Ag are used not only for decorations but also for
Although it is an extremely important element in industrial applications such as catalysts and plating, its abundance is by no means large, and it is essential to recover these precious metals from various industrial wastes. In particular, automobile exhaust gas catalysts and chemical manufacturing catalysts contain precious metals in amounts that exceed the content in ores, so recovering precious metals from used catalysts is a social imperative. It has become a challenge.
（従来技術とその問題点）
ＰＣ，Ｐｄ、Ａｇなどの貴金属元素は王水浸出中に主と
してクロロ錯体アニオンとして存在している。従来りん
系抽出剤によってこのような貴金属錯体が抽出されるこ
とが知られている。しかしながら、この溶媒抽出方法は
抽出速度が遅いため、多量の貴金属を回収しようとする
と、装置が大型になり、高価な有機溶媒を多量に使用し
なければならないという欠点を有している。(Prior art and its problems) Precious metal elements such as PC, Pd, and Ag exist mainly as chloro complex anions during aqua regia leaching. It has been known that such noble metal complexes can be extracted using phosphorus-based extractants. However, since this solvent extraction method has a slow extraction rate, recovery of a large amount of precious metals requires a large-sized apparatus and requires the use of large amounts of expensive organic solvents.
従ってこのような問題を無くすために、抽出速度の速い
有機溶媒の開発がなされているが見つけられていないの
が現状である。Therefore, in order to eliminate such problems, efforts have been made to develop organic solvents with high extraction rates, but at present none have been found.
本発明者らは、このような事情に鑑み、貴金属元素を含
有する溶液から、該貴金属元素を簡便でかつ効果的に回
収しうる実用的な方法を提供すべく鋭意、研究を重ねた
結果、アルキルオキシム（Ｒ−Ｃ＝Ｎ−ＯＨ）
が抽出剤に対して加速作用を有した。このものを用いる
ことにより、その目的を達成しうろことを見出し、この
知見に基づいて、本発明を完成するに至った。In view of these circumstances, the present inventors have conducted extensive research to provide a practical method for easily and effectively recovering noble metal elements from solutions containing them. The alkyl oxime (R-C=N-OH) had an accelerating effect on the extractant. It was discovered that the object could be achieved by using this product, and based on this knowledge, the present invention was completed.
（問題点を解決するための手段）
すなわち本発明はアルキルオキシム（Ｒ−Ｃ＝古
Ｎ−ＯＨ但しＲはアルキル基）を従来の溶媒に添加する
ことによって、貴金属錯体を含有する水溶液から、貴金
属錯体をりん系抽出剤の有機相に溶媒抽出することを特
徴とする貴金属元素の回収方法を提供するものである。(Means for Solving the Problems) That is, the present invention is capable of removing a noble metal from an aqueous solution containing a noble metal complex by adding an alkyl oxime (R-C=old N-OH, where R is an alkyl group) to a conventional solvent. The present invention provides a method for recovering noble metal elements, which is characterized by solvent extraction of a complex into an organic phase of a phosphorus-based extractant.
本発明において適用される貴金属錯体を含有する水溶液
の陰イオンについては、特に制限はなくＣ１−１Ｎ Ｏ
３−１ＳＯ，ト、ＰＯ３’−１■−１Ｂｒ−１Ｃ１０４
−などが望ましい、また本発明の有機相としては従来と
同様の抽出剤と希釈とからなる。抽出剤としてはりん系
からなるものがあり、りん系としてトリアルキルフォス
フェ−ト、トリアルキルフォスフェート、トリアルキル
ホスフィンオキサイド、およびトリアルキルホスフィン
サルファイドなどがある。There are no particular restrictions on the anion of the aqueous solution containing the noble metal complex applied in the present invention, and C1-1N O
3-1SO, TO, PO3'-1■-1Br-1C104
- etc. are desirable, and the organic phase of the present invention consists of the conventional extractant and diluent. Examples of the extractant include phosphorus-based extractants, such as trialkyl phosphate, trialkyl phosphate, trialkylphosphine oxide, and trialkylphosphine sulfide.
一方希釈剤としてはｎ−ヘキサン、ケロシン、１−１−
１ ）リクロルエタンなどのパラフィン系のものやキ
シレン、ケロシン、ベンゼン、トルエンなどの芳香族系
のものがある。On the other hand, diluents include n-hexane, kerosene, 1-1-
1) There are paraffinic ones such as lychloroethane, and aromatic ones such as xylene, kerosene, benzene, and toluene.
本発明の特徴である加速剤はアルキルオキシム（Ｒ−Ｃ
＝Ｎ−ＯＨ）は、アルキル基の炭素数が古
４から１０までのものが好ましい。代表的なものとして
Ｃ−８のものとして２−エチルヘキサナールオキシム、
Ｃ＝６のものとしてｎ−ヘキサナールオキシムなどがあ
る。The accelerator that is a feature of the present invention is an alkyl oxime (R-C
=N-OH) preferably has an alkyl group having 4 to 10 carbon atoms. Representative examples of C-8 include 2-ethylhexanal oxime,
Examples of C=6 include n-hexanal oxime.
このような加速剤を従来の有機相に添加して、水和から
貴金属を回収する機構は、次のとおりである。The mechanism for adding such accelerators to conventional organic phases to recover precious metals from hydration is as follows.
まず、水相と有機物の界面 有機相中のアルキルオキシ
ム（ＲＯＭ）が水相に少量溶解する。First, at the interface between the aqueous phase and the organic substance, a small amount of alkyl oxime (ROM) in the organic phase dissolves in the aqueous phase.
ＲＯＸ＊橋相→ＲＯＸ水相 次に水相中のＲＯＸが貴金属錯体（Ｍ゛）を結合する。ROX * bridge phase → ROX water phase ROX in the aqueous phase then binds the noble metal complex (M).
Ｍ′″＋ＲＯＸ水相→（Ｍ−ＲＯＸ）水槽この錯体は親
油性を帯びているため、速やかに有機相へ移動する。M′″+ROX aqueous phase → (M-ROX) water tank Since this complex is lipophilic, it quickly moves to the organic phase.
ＣＭ−ＲＯＸ）水槽→（Ｍ−ＲＯＸ）有＋ｌｊ？！！有
機相ではこの錯体の加速剤がｍＭして有機相中の抽出剤
（ＳＱＬ）と置き換わる。CM-ROX) Water tank → (M-ROX) Yes + lj? ! ! In the organic phase, the accelerator of this complex replaces the extractant (SQL) in the organic phase in mM.
（Ｍ−ＲＯＸ）有４ＩＩ相＋ＳＯＬ＊機槽→（Ｍ−ＳＱ
Ｌ）ｗ槻相＋ＲＯＸ肩機相この遊離されたＲＯＸが再び
最初の界面反応に導かれる。(M-ROX) Yes 4II phase + SOL * machine tank → (M-SQ
L) w Tsuki phase + ROX shoulder machine phase This liberated ROX is again led to the first interfacial reaction.
次に実施例によって本発明をさらに詳細に説明する。Next, the present invention will be explained in more detail with reference to Examples.
（実施例）
ｐｔとして塩化白金酸水溶液（２規定塩酸）から、加速
剤として２−ヘキサナールオキシムを含む、トリブチル
フォスフェート（ＴＢＰ）５０％−ヘキサン有機相、下
表左欄の条件で、溶媒抽出を行った。抽出率７０％まで
の時間は下表右欄のとおりであった。(Example) Solvent extraction from a chloroplatinic acid aqueous solution (2N hydrochloric acid) as PT using a tributyl phosphate (TBP) 50%-hexane organic phase containing 2-hexanal oxime as an accelerator under the conditions shown in the left column of the table below. I did it. The time until the extraction rate was 70% was as shown in the right column of the table below.
（従来例）
加速剤を用いない以外は実施例と同様に溶媒抽出をした
ところ抽出率７０％までの時間は下表のとおりであった
。(Conventional example) When solvent extraction was carried out in the same manner as in the example except that no accelerator was used, the time required to reach an extraction rate of 70% was as shown in the table below.
以上の実施例と従来例とから明らかなように、本発明の
加速剤を用いれば、従来の溶媒抽出の処理時間を著しく
短くすることができる。As is clear from the above examples and conventional examples, if the accelerator of the present invention is used, the processing time of conventional solvent extraction can be significantly shortened.
（発明の効果）
本発明によると、加速剤アルキルオキシムの存在よって
著しく抽出速度を速めることができ、しかも簡便なくり
返し操作によって溶液中の貴金属を簡便で且つ効果的に
回収することができる。(Effects of the Invention) According to the present invention, the extraction rate can be significantly increased due to the presence of the accelerator alkyl oxime, and moreover, the precious metal in the solution can be simply and effectively recovered by simple repeated operations.
Claims (1)
剤の有機相へ溶媒抽出する方法において、アルキルオキ
シムを加速剤として添加することを特徴とする貴金属元
素の回収方法。1. A method for recovering a noble metal element, the method comprising adding an alkyl oxime as an accelerator in the method of solvent extraction of the noble metal from an aqueous solution containing a noble metal complex into an organic phase of a phosphorus-based extractant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16645886A JPS6320423A (en) | 1986-07-15 | 1986-07-15 | Method for recovering noble metallic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16645886A JPS6320423A (en) | 1986-07-15 | 1986-07-15 | Method for recovering noble metallic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6320423A true JPS6320423A (en) | 1988-01-28 |
Family
ID=15831774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16645886A Pending JPS6320423A (en) | 1986-07-15 | 1986-07-15 | Method for recovering noble metallic element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6320423A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03232214A (en) * | 1990-02-08 | 1991-10-16 | Hitachi Aic Inc | Case built-in type capacitor |
| US5654458A (en) * | 1990-11-14 | 1997-08-05 | Henkel Corporation | Recovery of palladium |
| US5936130A (en) * | 1996-09-11 | 1999-08-10 | Mitsubishi Chemical Corporation | Process for preparing a rhodium complex solution and process for producing an aldehyde |
| JP2008300742A (en) * | 2007-06-01 | 2008-12-11 | Nichicon Corp | Capacitor |
-
1986
- 1986-07-15 JP JP16645886A patent/JPS6320423A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03232214A (en) * | 1990-02-08 | 1991-10-16 | Hitachi Aic Inc | Case built-in type capacitor |
| US5654458A (en) * | 1990-11-14 | 1997-08-05 | Henkel Corporation | Recovery of palladium |
| US5936130A (en) * | 1996-09-11 | 1999-08-10 | Mitsubishi Chemical Corporation | Process for preparing a rhodium complex solution and process for producing an aldehyde |
| JP2008300742A (en) * | 2007-06-01 | 2008-12-11 | Nichicon Corp | Capacitor |
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