JP2019172653A - Extracting agent for metal and extracting method therewith - Google Patents
Extracting agent for metal and extracting method therewith Download PDFInfo
- Publication number
- JP2019172653A JP2019172653A JP2018202826A JP2018202826A JP2019172653A JP 2019172653 A JP2019172653 A JP 2019172653A JP 2018202826 A JP2018202826 A JP 2018202826A JP 2018202826 A JP2018202826 A JP 2018202826A JP 2019172653 A JP2019172653 A JP 2019172653A
- Authority
- JP
- Japan
- Prior art keywords
- complex
- metal
- gold
- chlorine
- fluorine
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 73
- 239000002184 metal Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title description 7
- FFWSICBKRCICMR-UHFFFAOYSA-N 5-methyl-2-hexanone Chemical compound CC(C)CCC(C)=O FFWSICBKRCICMR-UHFFFAOYSA-N 0.000 claims abstract description 120
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 41
- 239000011737 fluorine Substances 0.000 claims abstract description 41
- 238000000605 extraction Methods 0.000 claims abstract description 37
- 239000010931 gold Substances 0.000 claims description 56
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 54
- 229910052737 gold Inorganic materials 0.000 claims description 54
- 239000007864 aqueous solution Substances 0.000 claims description 46
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 44
- 229910052801 chlorine Inorganic materials 0.000 claims description 44
- 239000000460 chlorine Substances 0.000 claims description 44
- 229910052715 tantalum Inorganic materials 0.000 claims description 34
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical group [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 32
- 229910052702 rhenium Inorganic materials 0.000 claims description 26
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 26
- 239000010955 niobium Substances 0.000 claims description 22
- 229910052758 niobium Inorganic materials 0.000 claims description 20
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 20
- 239000002904 solvent Substances 0.000 claims description 5
- 239000004480 active ingredient Substances 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 19
- 239000003795 chemical substances by application Substances 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 150000002739 metals Chemical class 0.000 abstract description 4
- 229910001510 metal chloride Inorganic materials 0.000 abstract 1
- 239000012488 sample solution Substances 0.000 description 40
- 239000002253 acid Substances 0.000 description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 229910021505 gold(III) hydroxide Inorganic materials 0.000 description 6
- WDZVNNYQBQRJRX-UHFFFAOYSA-K gold(iii) hydroxide Chemical compound O[Au](O)O WDZVNNYQBQRJRX-UHFFFAOYSA-K 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- AOLPZAHRYHXPLR-UHFFFAOYSA-I pentafluoroniobium Chemical compound F[Nb](F)(F)(F)F AOLPZAHRYHXPLR-UHFFFAOYSA-I 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- ZIRLXLUNCURZTP-UHFFFAOYSA-I tantalum(5+);pentahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[Ta+5] ZIRLXLUNCURZTP-UHFFFAOYSA-I 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 150000004696 coordination complex Chemical class 0.000 description 3
- 238000004993 emission spectroscopy Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000009616 inductively coupled plasma Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002923 metal particle Substances 0.000 description 3
- WPCMRGJTLPITMF-UHFFFAOYSA-I niobium(5+);pentahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[Nb+5] WPCMRGJTLPITMF-UHFFFAOYSA-I 0.000 description 3
- -1 rhenium Chemical compound 0.000 description 3
- 239000012086 standard solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 150000003481 tantalum Chemical class 0.000 description 3
- BRSVJNYNWNMJKC-UHFFFAOYSA-N [Cl].[Au] Chemical compound [Cl].[Au] BRSVJNYNWNMJKC-UHFFFAOYSA-N 0.000 description 2
- GZRDJPGWGMWUQZ-UHFFFAOYSA-N [Re].[Au] Chemical compound [Re].[Au] GZRDJPGWGMWUQZ-UHFFFAOYSA-N 0.000 description 2
- SPNXRSCLFNNWIQ-UHFFFAOYSA-N [Re].[Cl] Chemical compound [Re].[Cl] SPNXRSCLFNNWIQ-UHFFFAOYSA-N 0.000 description 2
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 2
- PPOYUERUQZXZBE-UHFFFAOYSA-N gold;trihydrate Chemical compound O.O.O.[Au] PPOYUERUQZXZBE-UHFFFAOYSA-N 0.000 description 2
- 229960002050 hydrofluoric acid Drugs 0.000 description 2
- 239000000976 ink Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000006072 paste Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- BVOKCSKTSALAFW-UHFFFAOYSA-N [F].[Ta] Chemical compound [F].[Ta] BVOKCSKTSALAFW-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- NGAZZOYFWWSOGK-UHFFFAOYSA-N heptan-3-one Chemical compound CCCCC(=O)CC NGAZZOYFWWSOGK-UHFFFAOYSA-N 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- YRGLXIVYESZPLQ-UHFFFAOYSA-I tantalum pentafluoride Chemical compound F[Ta](F)(F)(F)F YRGLXIVYESZPLQ-UHFFFAOYSA-I 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
- Extraction Or Liquid Replacement (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
本発明は、金属用抽出剤及びそれを用いる抽出方法に関する。 The present invention relates to a metal extractant and an extraction method using the same.
従来、５−メチル−２−ヘキサノン（慣用名として、イソアミルメチルケトン又はメチルイソアミルケトン（ＭＩＡＫ））は、インキ、ペースト、塗料、レジスト等の溶媒としての用途が知られている（例えば、特許文献１参照）。 Conventionally, 5-methyl-2-hexanone (commonly known as isoamyl methyl ketone or methyl isoamyl ketone (MIAK)) has been known to be used as a solvent for inks, pastes, paints, resists, and the like (for example, Patent Documents). 1).
しかしながら、５−メチル−２−ヘキサノンは、第２石油類に分類され、保管できる指定数量も第１石油類の２００リットルに比較して１０００リットルと大きいので、前記溶媒としての用途以外に新たな用途の開発が望まれる。 However, 5-methyl-2-hexanone is classified as a second petroleum, and the designated quantity that can be stored is as large as 1000 liters compared to 200 liters of the first petroleum. Development of applications is desired.
本発明は、かかる事情に鑑み、５−メチル−２−ヘキサノンの新たな用途を提供することを目的とする。 In view of such circumstances, an object of the present invention is to provide a new use of 5-methyl-2-hexanone.
本発明者らは、５−メチル−２−ヘキサノンの新たな用途について鋭意検討した結果、塩素錯体又はフッ素錯体を形成し得る金属の該塩素錯体水溶液又は該フッ素錯体水溶液から該金属の塩素錯体又はフッ素錯体を抽出する金属用抽出剤として有用であることを見いだし本発明に到達した。 As a result of intensive studies on a new use of 5-methyl-2-hexanone, the present inventors have found that a metal complex capable of forming a chlorine complex or a fluorine complex or a chlorine complex of the metal from the aqueous solution of the fluorine complex or the aqueous solution of the fluorine complex. It has been found that the present invention is useful as a metal extractant for extracting a fluorine complex, and has reached the present invention.
そこで、本発明の金属用抽出剤は、５−メチル−２−ヘキサノンを含有し、塩素錯体又はフッ素錯体を形成し得る金属の該塩素錯体水溶液又は該フッ素錯体水溶液から該金属の塩素錯体又はフッ素錯体を抽出するために用いられることを特徴とする。 Therefore, the metal extractant of the present invention contains 5-methyl-2-hexanone, and can form a chlorine complex or a fluorine complex. It is used for extracting a complex.
本発明によれば、５−メチル−２−ヘキサノンを含有する金属用抽出剤を、塩素錯体又はフッ素錯体を形成し得る金属の該塩素錯体水溶液又は該フッ素錯体水溶液に添加することにより、該水溶液から該金属の塩素錯体又はフッ素錯体を抽出することができる。 According to the present invention, by adding a metal extractant containing 5-methyl-2-hexanone to the chlorine complex aqueous solution or the fluorine complex aqueous solution of a metal capable of forming a chlorine complex or a fluorine complex, the aqueous solution From the above, a chlorine complex or a fluorine complex of the metal can be extracted.
また、本発明の抽出方法は、塩素錯体又はフッ素錯体を形成し得る金属の該塩素錯体水溶液又は該フッ素錯体水溶液から該金属の塩素錯体又はフッ素錯体を５−メチル−２−ヘキサノンを有効成分とする抽出溶媒により抽出することを特徴とする。 In addition, the extraction method of the present invention comprises a metal complex capable of forming a chlorine complex or a fluorine complex or an aqueous solution of the chlorine complex or fluorine complex of the metal and 5-methyl-2-hexanone as an active ingredient. The extraction is performed using an extraction solvent.
本発明において、前記塩素錯体を形成し得る金属は、例えば、金又はレニウムであり、前記フッ素錯体を形成し得る金属は、例えば、タンタル又はニオブである。 In the present invention, the metal capable of forming the chlorine complex is, for example, gold or rhenium, and the metal capable of forming the fluorine complex is, for example, tantalum or niobium.
次に、添付の図面を参照しながら本発明の実施の形態についてさらに詳しく説明する。 Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
本実施形態の金属抽出剤は、５−メチル−２−ヘキサノン（以下、ＭＩＡＫと略記する）からなり、塩素錯体又はフッ素錯体を形成し得る金属の該塩素錯体水溶液又は該フッ素錯体水溶液から該金属の塩素錯体又はフッ素錯体を抽出するために用いられる。 The metal extractant of the present embodiment is made of 5-methyl-2-hexanone (hereinafter abbreviated as MIAK), and the metal from the chlorine complex aqueous solution or the fluorine complex aqueous solution of a metal capable of forming a chlorine complex or a fluorine complex. It is used to extract a chlorine complex or a fluorine complex.
ここで、前記塩素錯体を形成し得る金属は、例えば、金又はレニウムであり、前記フッ素錯体を形成し得る金属は、例えば、タンタル又はニオブである。 Here, the metal that can form the chlorine complex is, for example, gold or rhenium, and the metal that can form the fluorine complex is, for example, tantalum or niobium.
次に、図１を参照して、塩素錯体を形成し得る金属の該塩素錯体水溶液から該金属の塩素錯体を抽出し、該金属の粒子を回収する方法について、該金属が金である場合を例として説明する。 Next, referring to FIG. 1, a method of extracting the metal chlorine complex from the chlorine complex aqueous solution of a metal capable of forming a chlorine complex and recovering the metal particles is as follows. This will be described as an example.
塩素錯体を形成し得る金属が金（Ａｕ）である場合には、まず、ＳＴＥＰ１で、金の塩素錯体である塩化金酸（ＨＡｕＣｌ４）の水溶液を調製する。塩化金酸の水溶液は、例えば、金を含む原材料を王水又は６〜６．５Ｎの塩酸に溶解することにより得ることができる。 When the metal capable of forming a chlorine complex is gold (Au), first, in STEP 1, an aqueous solution of chloroauric acid (HAuCl 4 ), which is a gold chlorine complex, is prepared. An aqueous solution of chloroauric acid can be obtained, for example, by dissolving a raw material containing gold in aqua regia or 6-6.5N hydrochloric acid.
次に、ＳＴＥＰ２で、前記塩化金酸の水溶液にＭＩＡＫを添加し、塩化金酸をＭＩＡＫに抽出する。このとき、ＭＩＡＫには塩化金酸以外の金属錯体等も抽出される。 Next, in STEP 2, MIAK is added to the aqueous solution of chloroauric acid, and chloroauric acid is extracted into MIAK. At this time, metal complexes other than chloroauric acid are also extracted in MIAK.
そこで、ＳＴＥＰ３で、ＭＩＡＫに希酸を添加して洗浄し、塩化金酸以外の金属錯体等を除去する。この結果、ＭＩＡＫには実質的に塩化金酸のみが含有される状態となる。 Therefore, in STEP3, a dilute acid is added to MIAK and washed to remove metal complexes other than chloroauric acid. As a result, MIAK substantially contains only chloroauric acid.
次に、ＳＴＥＰ４で、ＭＩＡＫにアルカリ水溶液を添加して水酸化金（Ａｕ（ＯＨ）３）を生成させ、生成した水酸化金を水相に移動させる。次いで、ＳＴＥＰ５で、油水分離することにより、ＭＩＡＫから水酸化金を含むアルカリ水溶液を分離する。 Next, in STEP 4, an alkaline aqueous solution is added to MIAK to generate gold hydroxide (Au (OH) 3 ), and the generated gold hydroxide is moved to the aqueous phase. Next, in STEP5, the aqueous solution containing gold hydroxide is separated from MIAK by oil-water separation.
次に、ＳＴＥＰ６で、分離されたアルカリ水溶液に塩酸を添加して、前記水酸化金を再び塩化金酸にする。そして、ＳＴＥＰ７で、塩化金酸水溶液に還元性化合物を添加し、塩化金酸を還元することにより金の粒子を沈殿させ、ＳＴＥＰ８で沈殿を濾別することにより金の粒子を回収する。 Next, in STEP 6, hydrochloric acid is added to the separated alkaline aqueous solution to convert the gold hydroxide into chloroauric acid again. In STEP 7, a reducing compound is added to the aqueous chloroauric acid solution, and gold particles are precipitated by reducing chloroauric acid, and the gold particles are recovered by filtering the precipitate in STEP8.
また、塩素錯体を形成し得る金属がレニウム等の金以外の金属である場合については図示しないが、図１に示す金の場合と同様にして該金属の塩素錯体をＭＩＡＫにより抽出し、金の場合と同様の手順により該金属の粒子を回収することができる。 Although the case where the metal capable of forming a chlorine complex is a metal other than gold, such as rhenium, is not illustrated, the metal chlorine complex is extracted by MIAK in the same manner as in the case of gold shown in FIG. The metal particles can be recovered by the same procedure as in the case.
次に、図２を参照して、フッ素錯体を形成し得る金属の該フッ素錯体水溶液から該金属のフッ素錯体を抽出し、該金属の粒子を回収する方法について、該金属がタンタルとニオブである場合を例として説明する。 Next, referring to FIG. 2, regarding a method of extracting the metal fluorine complex from the fluorine complex aqueous solution of the metal capable of forming a fluorine complex and recovering the metal particles, the metal is tantalum and niobium. A case will be described as an example.
フッ素錯体を形成し得る金属がタンタル（Ｔａ）とニオブ（Ｎｂ）とである場合には、まず、ＳＴＥＰ１１で、タンタルのフッ素錯体であるフッ化タンタル酸（Ｈ２ＴａＦ７）と、ニオブのフッ素錯体であるフッ化ニオブ酸（Ｈ２ＮｂＦ７）との混合水溶液を調製する。タンタルとニオブとは、タンタライト、コロンバイト等の鉱石として一緒に産出されるので、前記水溶液は、例えば、タンタルとニオブとを含む鉱石をボールミル等で微粉砕し、得られた粉鉱をフッ酸に溶解し、硫酸を加えてフッ素イオン濃度及び硫酸イオン濃度を調整することにより得ることができる。 When the metal capable of forming the fluorine complex is tantalum (Ta) and niobium (Nb), first, in STEP 11, fluorinated tantalum acid (H 2 TaF 7 ) which is a fluorine complex of tantalum and fluorine of niobium Prepare a mixed aqueous solution with niobium fluoride (H 2 NbF 7 ) which is a complex. Since tantalum and niobium are produced together as ores such as tantalite and columbite, the aqueous solution is obtained by, for example, pulverizing an ore containing tantalum and niobium with a ball mill or the like, and collecting the obtained ore. It can be obtained by dissolving in an acid and adjusting the fluoride ion concentration and sulfate ion concentration by adding sulfuric acid.
次に、ＳＴＥＰ１２で、前記フッ化タンタル酸とフッ化ニオブ酸との混合水溶液にＭＩＡＫを添加し、フッ化タンタル酸とフッ化ニオブ酸とをＭＩＡＫに抽出する。 Next, in STEP 12, MIAK is added to the mixed aqueous solution of tantalum fluorinated acid and niobium fluoride to extract tantalum fluorinated acid and niobium fluoride to MIAK.
次に、ＳＴＥＰ１３で、ＭＩＡＫに希酸を加え、フッ化ニオブ酸を希酸中に抽出する一方、フッ化タンタル酸をＭＩＡＫ中に残留させる。次いで、ＳＴＥＰ１４で油水分離することにより、タンタルのＭＩＡＫ溶液（ＳＴＥＰ１５）と、ニオブの水溶液（ＳＴＥＰ２４）とが得られる。 Next, in STEP 13, dilute acid is added to MIAK, and niobic fluoride is extracted into dilute acid, while tantalum fluoride is left in MIAK. Subsequently, oil-water separation is performed in STEP14, whereby a tantalum MIAK solution (STEP15) and a niobium aqueous solution (STEP24) are obtained.
ＳＴＥＰ１５で得られたタンタルのＭＩＡＫ溶液は、次いで、ＳＴＥＰ１６で水を添加することにより、タンタルが水溶液中に抽出される。次いで、ＳＴＥＰ１７で油水分離することにより、タンタルを含まないＭＩＡＫ（ＳＴＥＰ１８）と、タンタルの水溶液（ＳＴＥＰ１９）とが得られる。ＳＴＥＰ１８で得られたＭＩＡＫは、回収されて再利用に供することができる。 In the tantalum MIAK solution obtained in STEP 15, the tantalum is extracted into the aqueous solution by adding water in STEP 16. Next, oil-water separation is performed at STEP 17 to obtain MIAK (STEP 18) not containing tantalum and an aqueous solution of tantalum (STEP 19). The MIAK obtained in STEP 18 can be collected and reused.
ＳＴＥＰ１９で得られたタンタルの水溶液は、次にＳＴＥＰ２０でアルカリ水溶液を添加することにより、水酸化タンタル（Ｔａ（ＯＨ）５）が沈殿する。そこで、ＳＴＥＰ２１で水酸化タンタルの沈殿を濾過し、得られた水酸化タンタルをＳＴＥＰ２２で仮焼することにより、酸化タンタル（Ｔａ２Ｏ５）としてタンタルを回収することができる（ＳＴＥＰ２３）。 The aqueous solution of tantalum obtained in STEP 19 is then added with an aqueous alkaline solution in STEP 20 to precipitate tantalum hydroxide (Ta (OH) 5 ). Therefore, tantalum hydroxide can be recovered as tantalum oxide (Ta 2 O 5 ) by filtering the precipitate of tantalum hydroxide in STEP 21 and calcining the obtained tantalum hydroxide in STEP 22 (STEP 23).
一方、ＳＴＥＰ２４で得られたニオブの水溶液は、次にＳＴＥＰ２５でアルカリ水溶液を添加することにより、水酸化ニオブ（Ｎｂ（ＯＨ）５）が沈殿する。そこで、ＳＴＥＰ２６で水酸化ニオブの沈殿を濾過し、得られた水酸化ニオブをＳＴＥＰ２７で仮焼することにより、酸化ニオブ（Ｎｂ２Ｏ５）としてニオブを回収することができる（ＳＴＥＰ２８）。 On the other hand, niobium hydroxide (Nb (OH) 5 ) is precipitated in the aqueous niobium solution obtained in STEP 24 by adding an alkaline aqueous solution in STEP 25. Then, the precipitate of niobium hydroxide is filtered at STEP 26, and the obtained niobium hydroxide is calcined at STEP 27, so that niobium can be recovered as niobium oxide (Nb 2 O 5 ) (STEP 28).
尚、ＳＴＥＰ１１でフッ化タンタル酸のみを含む水溶液を調製する場合は、ＳＴＥＰ１２の後、ＳＴＥＰ１３〜１５を行わず、ＳＴＥＰ１６〜２３の操作を行えばよい。また、ＳＴＥＰ１１でフッ化ニオブ酸のみを含む水溶液を調製する場合は、ＳＴＥＰ１２の後、ＳＴＥＰ１３〜２４の操作を行わず、ＳＴＥＰ２５〜２８の操作を行えばよい。 In addition, when preparing the aqueous solution which contains only a fluorinated tantalum acid by STEP11, STEP13 ~ 15 should just be performed after STEP12, without performing STEP13 ~ 15. Further, when preparing an aqueous solution containing only niobium fluoride in STEP 11, the operations of STEP 25 to 28 may be performed after STEP 12, without performing the operations of STEP 13 to 24.
また、フッ素錯体を形成し得る金属がタンタル又はニオブ以外の金属である場合については図示しないが、図２に示すタンタル又はニオブの場合と同様にして該金属のフッ素錯体をＭＩＡＫにより抽出し、タンタル又はニオブの場合と同様の手順により酸化物として該金属を回収することができる。 Although the case where the metal capable of forming the fluorine complex is a metal other than tantalum or niobium is not shown, the metal fluorine complex is extracted by MIAK in the same manner as in the case of tantalum or niobium shown in FIG. Alternatively, the metal can be recovered as an oxide by the same procedure as in the case of niobium.
次に、本発明の実施例を示す。 Next, examples of the present invention will be described.
〔実施例１〕
本実施例では、まず、金の濃度が１０００ｍｇ／リットルの市販の原子吸光分析用標準液（和光純薬工業株式会社製）を１０ミリリットルずつ複数の容器に分取した。次に、各容器に塩酸と水とを添加し、各容器の塩素イオン濃度が０〜１０モル／リットルの範囲でそれぞれ異なる濃度となり、全体の液量が５０ミリリットル（金濃度で５０ｍｇ/リットル）になるように調整して、金の塩素錯体として塩化金酸を含む複数の試料溶液を調製した。各試料溶液は、した。各試料溶液の塩素イオン濃度は、イオンクロマトグラフにより測定した。
[Example 1]
In this example, first, a commercially available standard solution for atomic absorption analysis (manufactured by Wako Pure Chemical Industries, Ltd.) having a gold concentration of 1000 mg / liter was dispensed into a plurality of containers in a volume of 10 ml. Next, hydrochloric acid and water are added to each container, and the chlorine ion concentration in each container becomes a different concentration in the range of 0 to 10 mol / liter, and the total liquid volume is 50 milliliters (50 mg / liter in gold concentration). A plurality of sample solutions containing chloroauric acid as a gold chloride complex were prepared. Each sample solution was. The chlorine ion concentration of each sample solution was measured by an ion chromatograph.
次に、各試料溶液のそれぞれとＭＩＡＫとを同体積ずつ分取して密封容器に封入した。このとき、各試料溶液中の金の初期質量Ａを次式（１）により算出した。 Next, each sample solution and MIAK were dispensed in the same volume and sealed in a sealed container. At this time, the initial mass A of gold in each sample solution was calculated by the following equation (1).
試料溶液中の金の初期質量Ａ＝試料溶液の金濃度×試料溶液の体積 ・・・（１）
次に、前記密封容器を所定時間撹拌し、試料溶液中の塩化金酸をＭＩＡＫ中に抽出した後、試料溶液中の金の濃度を誘導結合プラズマ発光分析（ＩＣＰ−ＡＥＳ）により測定し、各試料溶液中の金の撹拌後の質量Ｂを次式（２）により算出した。
Initial mass of gold in sample solution A = gold concentration of sample solution × volume of sample solution (1)
Next, the sealed container is stirred for a predetermined time, and chloroauric acid in the sample solution is extracted into MIAK, and then the gold concentration in the sample solution is measured by inductively coupled plasma emission spectrometry (ICP-AES). The mass B after stirring of gold in the sample solution was calculated by the following formula (2).
試料溶液中の金の撹拌後の質量Ｂ＝試料溶液の撹拌後の金濃度×試料溶液の体積
・・・（２）
そして、次式（３）により塩素イオン濃度に対する金の抽出率を算出した。
Mass after stirring gold in sample solution B = Gold concentration after stirring sample solution × Volume of sample solution
... (2)
And the extraction rate of gold | metal | money with respect to chlorine ion concentration was computed by following Formula (3).
抽出率（％）＝｛（Ａ−Ｂ）／Ａ｝×１００ ・・・（３）
塩素イオン濃度に対する金の抽出率を図３に示す。
Extraction rate (%) = {(A−B) / A} × 100 (3)
FIG. 3 shows the extraction rate of gold with respect to the chloride ion concentration.
〔実施例２〕
本実施例では、金に代えてレニウムを用いた以外は、実施例１と全く同一にして、塩素イオン濃度に対するレニウムの抽出率を算出した。塩素イオン濃度に対するレニウムの抽出率を図４に示す。
[Example 2]
In this example, the extraction rate of rhenium relative to the chlorine ion concentration was calculated in exactly the same manner as in Example 1 except that rhenium was used instead of gold. The extraction rate of rhenium with respect to the chlorine ion concentration is shown in FIG.
〔実施例３〕
本実施例では、まず、タンタルの濃度が１０００ｍｇ／リットルの市販の原子吸光分析用標準液（和光純薬工業株式会社製）を０．５ミリリットルずつ複数の容器に分取した。次に、各容器にフッ酸と硫酸とを添加し、各容器のフッ素イオン濃度が０〜５モル／リットルの範囲で、また硫酸イオン濃度が０〜４モル／リットルの範囲で、それぞれ異なる濃度となり、全体の液量が５０ミリリットル（タンタル濃度で１０ｍｇ/リットル）になるように調整して、タンタルのフッ素錯体としてフッ化タンタル酸を含む複数の試料溶液を調製した。各試料溶液のフッ素イオン濃度及び硫酸イオン濃度は、イオンクロマトグラフにより測定した。
Example 3
In this example, first, a commercially available standard solution for atomic absorption analysis (manufactured by Wako Pure Chemical Industries, Ltd.) having a tantalum concentration of 1000 mg / liter was dispensed into a plurality of containers 0.5 ml each. Next, hydrofluoric acid and sulfuric acid are added to each container, and the fluorine ion concentration in each container is in the range of 0 to 5 mol / liter, and the sulfate ion concentration is in the range of 0 to 4 mol / liter. Thus, a plurality of sample solutions containing fluorinated tantalum acid as a tantalum fluorine complex were prepared by adjusting the total liquid volume to 50 milliliters (10 mg / liter tantalum concentration). The fluorine ion concentration and the sulfate ion concentration of each sample solution were measured by an ion chromatograph.
次に、各試料溶液のそれぞれとＭＩＡＫとを同体積ずつ分取して密封容器に封入した。このとき、各試料溶液中のタンタルの初期質量Ａを次式（４）により算出した。 Next, each sample solution and MIAK were dispensed in the same volume and sealed in a sealed container. At this time, the initial mass A of tantalum in each sample solution was calculated by the following equation (4).
試料溶液中のタンタルの初期質量Ａ＝試料溶液のタンタル濃度×試料溶液の体積
・・・（４）
次に、前記密封容器を所定時間撹拌し、試料溶液中のフッ化タンタル酸をＭＩＡＫ中に抽出した後、試料溶液中のタンタルの濃度を誘導結合プラズマ発光分析（ＩＣＰ−ＡＥＳ）により測定し、各試料溶液中のタンタルの撹拌後の質量Ｂを次式（５）により算出した。
Initial mass of tantalum in sample solution A = Tantalum concentration of sample solution × Volume of sample solution
... (4)
Next, the sealed container is stirred for a predetermined time, and after extracting tantalum fluoric acid in the sample solution into MIAK, the concentration of tantalum in the sample solution is measured by inductively coupled plasma emission spectrometry (ICP-AES), The mass B after stirring of tantalum in each sample solution was calculated by the following equation (5).
試料溶液中のタンタルの撹拌後の質量Ｂ＝試料溶液の撹拌後のタンタル濃度×試料溶液の体積 ・・・（５）
そして、次式（６）によりフッ素イオン濃度及び硫酸イオン濃度に対するタンタルの抽出率を算出した。
Mass after stirring of tantalum in sample solution B = Concentration of tantalum after stirring of sample solution × Volume of sample solution (5)
And the extraction rate of the tantalum with respect to a fluorine ion concentration and a sulfate ion concentration was computed by following Formula (6).
抽出率（％）＝｛（Ａ−Ｂ）／Ａ｝×１００ ・・・（６）
フッ素イオン濃度及び硫酸イオン濃度に対するタンタルの抽出率を図５に示す。
Extraction rate (%) = {(A−B) / A} × 100 (6)
The extraction rate of tantalum with respect to the fluorine ion concentration and the sulfate ion concentration is shown in FIG.
〔実施例４〕
本実施例では、タンタルに代えてニオブを用いた以外は、実施例３と全く同一にして、フッ素イオン濃度及び硫酸イオン濃度に対するニオブの抽出率を算出した。フッ素イオン濃度及び硫酸イオン濃度に対するニオブの抽出率を図６に示す。
Example 4
In this example, the extraction rate of niobium with respect to the fluorine ion concentration and the sulfate ion concentration was calculated in exactly the same manner as in Example 3 except that niobium was used instead of tantalum. FIG. 6 shows the extraction rate of niobium with respect to the fluorine ion concentration and the sulfate ion concentration.
図３〜６から、本実施形態のＭＩＡＫからなる金属抽出剤によれば、塩素錯体又はフッ素錯体を形成し得る金属の該塩素錯体水溶液又は該フッ素錯体水溶液から該金属の塩素錯体又はフッ素錯体を抽出することができることが明らかである。 3-6, according to the metal extractant comprising MIAK of the present embodiment, the metal chlorine complex or fluorine complex is formed from the chlorine complex aqueous solution or the fluorine complex aqueous solution of a metal capable of forming a chlorine complex or fluorine complex. It is clear that it can be extracted.
符号なし。 No sign.
本発明は、金属用抽出剤及びそれを用いる抽出方法に関する。 The present invention relates to a metal extractant and an extraction method using the same.
従来、５−メチル−２−ヘキサノン（慣用名として、イソアミルメチルケトン又はメチルイソアミルケトン（ＭＩＡＫ））は、インキ、ペースト、塗料、レジスト等の溶媒としての用途が知られている（例えば、特許文献１参照）。 Conventionally, 5-methyl-2-hexanone (commonly known as isoamyl methyl ketone or methyl isoamyl ketone (MIAK)) has been known to be used as a solvent for inks, pastes, paints, resists, and the like (for example, Patent Documents). 1).
しかしながら、５−メチル−２−ヘキサノンは、第２石油類に分類され、保管できる指定数量も第１石油類の２００リットルに比較して１０００リットルと大きいので、前記溶媒としての用途以外に新たな用途の開発が望まれる。 However, 5-methyl-2-hexanone is classified as a second petroleum, and the designated quantity that can be stored is as large as 1000 liters compared to 200 liters of the first petroleum. Development of applications is desired.
本発明は、かかる事情に鑑み、５−メチル−２−ヘキサノンの新たな用途を提供することを目的とする。 In view of such circumstances, an object of the present invention is to provide a new use of 5-methyl-2-hexanone.
本発明者らは、５−メチル−２−ヘキサノンの新たな用途について鋭意検討した結果、塩素錯体又はフッ素錯体を形成し得る金属の該塩素錯体水溶液又は該フッ素錯体水溶液から該金属の塩素錯体又はフッ素錯体を抽出する金属用抽出剤として有用であることを見いだし本発明に到達した。 As a result of intensive studies on a new use of 5-methyl-2-hexanone, the present inventors have found that a metal complex capable of forming a chlorine complex or a fluorine complex or a chlorine complex of the metal from the aqueous solution of the fluorine complex or the aqueous solution of the fluorine complex. It has been found that the present invention is useful as a metal extractant for extracting a fluorine complex, and has reached the present invention.
そこで、本発明の金属用抽出剤は、５−メチル−２−ヘキサノンを含有し、金又はレニウムの塩素錯体水溶液から金又はレニウムの塩素錯体を抽出するために用いられることを特徴とする。 Therefore, for metals extraction agent of the present invention, the feature 5-methyl-2-hexanone contain, to be used to extract the chlorine complex aqueous solution or al gold or chlorine complex of rhenium gold or rhenium To do.
本発明によれば、５−メチル−２−ヘキサノンを含有する金属用抽出剤を、金又はレニウムの塩素錯体水溶液に添加することにより、該水溶液から金又はレニウムの塩素錯体を抽出することができる。 According to the present invention, 5-a metal-extractant containing methyl-2-hexanone, by adding chlorine complex aqueous solution of gold or rhenium, extracting chlorine complex of gold or rhenium from the aqueous solution Can do.
また、本発明の抽出方法は、金又はレニウムの塩素錯体水溶液から金又はレニウムの塩素錯体を５−メチル−２−ヘキサノンを有効成分とする抽出溶媒により抽出することを特徴とする。 The extraction method of the present invention is characterized by extracting the extraction solvent gold or rhenium which chlorine complex aqueous solution or al gold or chlorine complex of rhenium as active ingredient 5-methyl-2-hexanone.
次に、添付の図面を参照しながら本発明の実施の形態についてさらに詳しく説明する。 Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
本実施形態の金属抽出剤は、５−メチル−２−ヘキサノン（以下、ＭＩＡＫと略記する）からなり、金又はレニウムの塩素錯体水溶液から金又はレニウムの塩素錯体を抽出するために用いられる。 Metal extractants of the present embodiment, 5-methyl-2-hexanone (hereinafter, abbreviated as MIAK) consists, used to extract chlorine complex of gold or rhenium chlorine complex aqueous solution or al gold or rhenium It is done.
次に、図１を参照して、塩金又はレニウムの塩素錯体水溶液から金又はレニウムの塩素錯体を抽出し、金又はレニウムの粒子を回収する方法について、金の場合を例として説明する。 Next, referring to FIG. 1, it extracts a chlorine complex of gold or rhenium chlorine complex aqueous solution of a salt deposit or rhenium, the method for recovering particles of gold or rhenium, the case of gold as an example.
塩素錯体を形成し得る金属が金（Ａｕ）である場合には、まず、ＳＴＥＰ１で、金の塩素錯体である塩化金酸（ＨＡｕＣｌ４）の水溶液を調製する。塩化金酸の水溶液は、例えば、金を含む原材料を王水又は６〜６．５Ｎの塩酸に溶解することにより得ることができる。 When the metal capable of forming a chlorine complex is gold (Au), first, in STEP 1, an aqueous solution of chloroauric acid (HAuCl 4 ), which is a gold chlorine complex, is prepared. An aqueous solution of chloroauric acid can be obtained, for example, by dissolving a raw material containing gold in aqua regia or 6-6.5N hydrochloric acid.
次に、ＳＴＥＰ２で、前記塩化金酸の水溶液にＭＩＡＫを添加し、塩化金酸をＭＩＡＫに抽出する。このとき、ＭＩＡＫには塩化金酸以外の金属錯体等も抽出される。 Next, in STEP 2, MIAK is added to the aqueous solution of chloroauric acid, and chloroauric acid is extracted into MIAK. At this time, metal complexes other than chloroauric acid are also extracted in MIAK.
そこで、ＳＴＥＰ３で、ＭＩＡＫに希酸を添加して洗浄し、塩化金酸以外の金属錯体等を除去する。この結果、ＭＩＡＫには実質的に塩化金酸のみが含有される状態となる。 Therefore, in STEP3, a dilute acid is added to MIAK and washed to remove metal complexes other than chloroauric acid. As a result, MIAK substantially contains only chloroauric acid.
次に、ＳＴＥＰ４で、ＭＩＡＫにアルカリ水溶液を添加して水酸化金（Ａｕ（ＯＨ）３）を生成させ、生成した水酸化金を水相に移動させる。次いで、ＳＴＥＰ５で、油水分離することにより、ＭＩＡＫから水酸化金を含むアルカリ水溶液を分離する。 Next, in STEP 4, an alkaline aqueous solution is added to MIAK to generate gold hydroxide (Au (OH) 3 ), and the generated gold hydroxide is moved to the aqueous phase. Next, in STEP5, the aqueous solution containing gold hydroxide is separated from MIAK by oil-water separation.
次に、ＳＴＥＰ６で、分離されたアルカリ水溶液に塩酸を添加して、前記水酸化金を再び塩化金酸にする。そして、ＳＴＥＰ７で、塩化金酸水溶液に還元性化合物を添加し、塩化金酸を還元することにより金の粒子を沈殿させ、ＳＴＥＰ８で沈殿を濾別することにより金の粒子を回収する。 Next, in STEP 6, hydrochloric acid is added to the separated alkaline aqueous solution to convert the gold hydroxide into chloroauric acid again. In STEP 7, a reducing compound is added to the aqueous chloroauric acid solution, and gold particles are precipitated by reducing chloroauric acid, and the gold particles are recovered by filtering the precipitate in STEP8.
また、レニウムの場合については図示しないが、図１に示す金の場合と同様にしてレニウムの塩素錯体をＭＩＡＫにより抽出し、金の場合と同様の手順によりレニウムの粒子を回収することができる。 Although not shown for the case of Le chloride, it can be in the same manner as in the case of gold is shown in Figure 1 a chlorine complex of rhenium extracted with MIAK, recovering the particles of rhenium, possibly with the same procedure of Kim .
次に、本発明の実施例を示す。 Next, examples of the present invention will be described.
〔実施例１〕
本実施例では、まず、金の濃度が１０００ｍｇ／リットルの市販の原子吸光分析用標準液（和光純薬工業株式会社製）を１０ミリリットルずつ複数の容器に分取した。次に、各容器に塩酸と水とを添加し、各容器の塩素イオン濃度が０〜１０モル／リットルの範囲でそれぞれ異なる濃度となり、全体の液量が５０ミリリットル（金濃度で５０ｍｇ/リットル）になるように調整して、金の塩素錯体として塩化金酸を含む複数の試料溶液を調製した。各試料溶液の塩素イオン濃度は、イオンクロマトグラフにより測定した。
[Example 1]
In this example, first, a commercially available standard solution for atomic absorption analysis (manufactured by Wako Pure Chemical Industries, Ltd.) having a gold concentration of 1000 mg / liter was dispensed into a plurality of containers in a volume of 10 ml. Next, hydrochloric acid and water are added to each container, and the chlorine ion concentration in each container becomes a different concentration in the range of 0 to 10 mol / liter, and the total liquid volume is 50 milliliters (50 mg / liter in gold concentration). A plurality of sample solutions containing chloroauric acid as a gold chloride complex were prepared . The chlorine ion concentration of each sample solution was measured by an ion chromatograph.
次に、各試料溶液のそれぞれとＭＩＡＫとを同体積ずつ分取して密封容器に封入した。このとき、各試料溶液中の金の初期質量Ａを次式（１）により算出した。 Next, each sample solution and MIAK were dispensed in the same volume and sealed in a sealed container. At this time, the initial mass A of gold in each sample solution was calculated by the following equation (1).
試料溶液中の金の初期質量Ａ＝試料溶液の金濃度×試料溶液の体積 ・・・（１）
次に、前記密封容器を所定時間撹拌し、試料溶液中の塩化金酸をＭＩＡＫ中に抽出した後、試料溶液中の金の濃度を誘導結合プラズマ発光分析（ＩＣＰ−ＡＥＳ）により測定し、各試料溶液中の金の撹拌後の質量Ｂを次式（２）により算出した。
Initial mass of gold in sample solution A = gold concentration of sample solution × volume of sample solution (1)
Next, the sealed container is stirred for a predetermined time, and chloroauric acid in the sample solution is extracted into MIAK, and then the gold concentration in the sample solution is measured by inductively coupled plasma emission spectrometry (ICP-AES). The mass B after stirring of gold in the sample solution was calculated by the following formula (2).
試料溶液中の金の撹拌後の質量Ｂ＝試料溶液の撹拌後の金濃度×試料溶液の体積
・・・（２）
そして、次式（３）により塩素イオン濃度に対する金の抽出率を算出した。
Mass after stirring gold in sample solution B = Gold concentration after stirring sample solution × Volume of sample solution
... (2)
And the extraction rate of gold | metal | money with respect to chlorine ion concentration was computed by following Formula (3).
抽出率（％）＝｛（Ａ−Ｂ）／Ａ｝×１００ ・・・（３）
塩素イオン濃度に対する金の抽出率を図２に示す。
Extraction rate (%) = {(A−B) / A} × 100 (3)
The gold extraction rate with respect to the chloride ion concentration is shown in FIG .
〔実施例２〕
本実施例では、金に代えてレニウムを用いた以外は、実施例１と全く同一にして、塩素イオン濃度に対するレニウムの抽出率を算出した。塩素イオン濃度に対するレニウムの抽出率を図３に示す。
[Example 2]
In this example, the extraction rate of rhenium relative to the chlorine ion concentration was calculated in exactly the same manner as in Example 1 except that rhenium was used instead of gold. The extraction rate of rhenium with respect to the chlorine ion concentration is shown in FIG .
図２〜３から、本実施形態のＭＩＡＫからなる金属抽出剤によれば、金又はレニウムの塩素錯体水溶液から金又はレニウムの塩素錯体を抽出することができることが明らかである。 From FIGS. 2-3, according to the metal extractant consisting MIAK of the present embodiment, it is apparent that it is possible to extract chlorine complex aqueous solution or al gold or chlorine complex of rhenium gold or rhenium.
符号なし。 No sign.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018202826A JP6562433B1 (en) | 2018-10-29 | 2018-10-29 | Metal extractant and extraction method using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018202826A JP6562433B1 (en) | 2018-10-29 | 2018-10-29 | Metal extractant and extraction method using the same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018057834A Division JP6427698B1 (en) | 2018-03-26 | 2018-03-26 | Extraction method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019107893A Division JP2019173178A (en) | 2019-06-10 | 2019-06-10 | Extracting agent for metal and extracting method therewith |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP6562433B1 JP6562433B1 (en) | 2019-08-21 |
| JP2019172653A true JP2019172653A (en) | 2019-10-10 |
Family
ID=67695602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018202826A Active JP6562433B1 (en) | 2018-10-29 | 2018-10-29 | Metal extractant and extraction method using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6562433B1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235435A (en) * | 1987-03-24 | 1988-09-30 | Nishimura Watanabe Chiyuushiyutsu Kenkyusho:Kk | Manufacture of metallic tantalum |
-
2018
- 2018-10-29 JP JP2018202826A patent/JP6562433B1/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235435A (en) * | 1987-03-24 | 1988-09-30 | Nishimura Watanabe Chiyuushiyutsu Kenkyusho:Kk | Manufacture of metallic tantalum |
Non-Patent Citations (2)
| Title |
|---|
| NETE. M., ET AL.: "Separation and isolation of tantalum and niobium from tantalite using solvent extraction and ion exc", HYDROMETALLURGY, vol. 149, JPN6019005721, 22 July 2014 (2014-07-22), pages 31 - 40, ISSN: 0004064823 * |
| PURCELL, W. ET AL.: "Possible methodology for niobium, tantalum and scandium separation in ferrocolumbite", MINERALS ENGINEERING, vol. 119, JPN6019005722, 4 February 2018 (2018-02-04), pages 57 - 66, ISSN: 0004064824 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6562433B1 (en) | 2019-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5961938A (en) | Method for recovering reusable elements from rare earth-iron alloy | |
| JP2008115063A (en) | High purity hafnium material and method of manufacturing the material by using solvent extraction method | |
| Abbott et al. | Processing metal oxides using ionic liquids | |
| EP3733884A1 (en) | Solvent extraction method | |
| JP6427698B1 (en) | Extraction method | |
| JP5889455B1 (en) | Recovery method of rare earth elements | |
| Song et al. | Separation of tungsten and cobalt from WC-Co hard metal wastes using ion-exchange and solvent extraction with ionic liquid | |
| Amaral et al. | Equilibrium of zirconium and hafnium in the process of extraction with TBP in nitric medium–Influence in the Zr/Hf separation | |
| Rajak et al. | Extractive metallurgy of columbite-tantalite ore: A detailed review | |
| JP2019172653A (en) | Extracting agent for metal and extracting method therewith | |
| US7182925B2 (en) | Tantalum concentrates dissolution and purification method | |
| Sanda et al. | Solvent extraction of tantalum (V) from aqueous sulphate/fluoride solution using trioctyl phosphine oxide in MIBK | |
| JP2019173178A (en) | Extracting agent for metal and extracting method therewith | |
| KR101699926B1 (en) | Method for recovering nitric acid and gold from aqua regia solution | |
| JP5678231B2 (en) | Separation of rare earth elements from waste optical glass | |
| JP5850966B2 (en) | Cobalt extraction solution, cobalt solution, and cobalt recovery method | |
| US3107976A (en) | Niobium-tantalum separation | |
| JP6159630B2 (en) | Gold collection method | |
| JP2013136830A (en) | Method for recovering silver | |
| CN111485122B (en) | Method for recycling niobium from waste NbTaZr alloy | |
| KR101545968B1 (en) | Method for recovery of valuable metals from waste materials | |
| JP2022183612A (en) | Production method of tantalum oxide | |
| Ungerer | Separation of tantalum and niobium by solvent extraction | |
| JP2000144275A (en) | Method for recovering rare earth element | |
| CN104928503A (en) | Method for separating and extracting indium and gallium from indium-gallium solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190610 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190610 |
|
| A871 | Explanation of circumstances concerning accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A871 Effective date: 20190610 |
|
| TRDD | Decision of grant or rejection written | ||
| A975 | Report on accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A971005 Effective date: 20190625 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20190702 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20190717 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6562433 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |