JPS6335418A - Concentration of yttrium solution - Google Patents
Concentration of yttrium solutionInfo
- Publication number
- JPS6335418A JPS6335418A JP61178801A JP17880186A JPS6335418A JP S6335418 A JPS6335418 A JP S6335418A JP 61178801 A JP61178801 A JP 61178801A JP 17880186 A JP17880186 A JP 17880186A JP S6335418 A JPS6335418 A JP S6335418A
- Authority
- JP
- Japan
- Prior art keywords
- solution
- concentration
- electrodialysis
- yttrium
- yttrium 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.)
- Pending
Links
- 229910052727 yttrium Inorganic materials 0.000 title claims abstract description 18
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000000909 electrodialysis Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003014 ion exchange membrane Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 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 description 1
- 101000836268 Homo sapiens U4/U6.U5 tri-snRNP-associated protein 1 Proteins 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 102100027244 U4/U6.U5 tri-snRNP-associated protein 1 Human genes 0.000 description 1
- 239000003011 anion exchange membrane Substances 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/10—Preparation or treatment, e.g. separation or purification
- C01F17/13—Preparation or treatment, e.g. separation or purification by using ion exchange resins, e.g. chelate resins
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、イツトリウム溶液の効率的な濃縮方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an efficient method for concentrating a yttrium solution.
（従来技術とその問題点）
イツトリウムなどの希土類金属は、カラーアラ１クン管
用蛍光体をはじめとする電子工業材料、金属材料等とし
てさまざまな分野で用いられており、その言及は今後も
増大するものと認められている。(Prior art and its problems) Rare earth metals such as yttrium are used in various fields such as electronic industry materials, including phosphors for color Ara1 tubes, and metal materials, and their use will continue to increase in the future. It is recognized that
希土類金属は、類似した性質を持つ多種類の希土類合圧
が混在した鉱石として得られるため、他の金属の精錬に
比して複雑な分離精製工程が必要である。Rare earth metals are obtained as ores containing a mixture of many types of rare earths with similar properties, and therefore require a more complicated separation and purification process than the smelting of other metals.
この分離精製工程においては、イオン交換樹脂による交
換反応や選択能を有する溶媒による溶媒抽出が行われる
が、いずれの工程においても比較的濃度の低い大量の溶
液を取扱っており、濃縮工程が不可欠である。In this separation and purification process, an exchange reaction using an ion exchange resin and a solvent extraction using a selective solvent are performed, but in each process, a large amount of solution with relatively low concentration is handled, and a concentration process is essential. be.
溶液の濃縮には、一般に熱による方法が行われているが
、大形の装置と大１の熱エネルギーが必要であるため、
エネルギー消費が小さく経済的に濃縮を行うことができ
る濃縮手段の提供が要望されていた。Heat is generally used to concentrate solutions, but this method requires large equipment and a large amount of thermal energy.
There has been a desire to provide a concentration means that consumes less energy and can perform concentration economically.
（問題点を解決するための手段）
本発明者等は、イツトリウム溶液の濃縮を経済的に行う
方法について種々検討を重ねた結果、電気透析装置を用
いて行うことにより、経済的に濃縮を行うことができる
ことを確認した。(Means for Solving the Problems) As a result of repeated studies on various methods for economically concentrating a yttrium solution, the inventors of the present invention have found that it is possible to economically concentrate a yttrium solution by using an electrodialysis device. I confirmed that it is possible.
電気透析装置による溶液の濃縮あるいは７ｄ７４の分離
においては、電気透析によって生じる液の組成の変化に
よって液の成分が反ｌ；ｉ１５をする結末、沈澱物を生
じたり、イオン交換膜（析出を起こしたりすることがあ
る。When concentrating a solution or separating 7d74 using an electrodialyzer, changes in the composition of the solution caused by electrodialysis cause the components of the solution to change, resulting in the formation of a precipitate or the formation of a precipitate on the ion exchange membrane. There are things to do.
そこで、本発明者らは溶液のｐＨの値を調整することに
着目し、特定のｐ）−１に調整することにより電気透析
中に沈澱物などが生ぜず、また酸の移動が主な反応とな
る結果おこる電流効率の低下が生じない範囲にｐＨ８調
整することにより効率的にイツトリウム溶液を濃縮でき
ることを見出だしたのである。Therefore, the present inventors focused on adjusting the pH value of the solution, and by adjusting it to a specific p)-1, no precipitates were generated during electrodialysis, and the main reaction was acid transfer. They discovered that it is possible to efficiently concentrate a yttrium solution by adjusting the pH to 8 within a range that does not result in a decrease in current efficiency.
すなわら、本発明では、心気透析装置に供給するイツト
リウム溶液のｐＨ；を０．５〜４に調整し電気透析を行
うものである。That is, in the present invention, the pH of the yttrium solution supplied to the cardiac dialysis apparatus is adjusted to 0.5 to 4, and electrodialysis is performed.
イツトリウム溶液のＤＨが０．５より小さくなると、溶
液中の遊ｊｌ酸が多くなり溶液の導電率が人となり電気
透析電圧が低くなるものの、電気透析電流によって移行
する酸が多くなるためイツトリウム溶液の濃縮効率は低
下する。When the DH of the yttrium solution becomes less than 0.5, the amount of free acid in the solution increases, the conductivity of the solution increases, and the electrodialysis voltage decreases. Concentration efficiency decreases.
（実施例） 以下、実施例に基づき本発明を更に詳細に説明する。(Example) Hereinafter, the present invention will be explained in more detail based on Examples.
実施例 １−５
陽イオン交換１漠および陰イオン交換膜に徳山曽達株式
会社製のイオン交換膜である商品名ネオセプタを用いた
電気透析装δに０．５Ｍ０１の濃度の各種のｐＩ−１の
イツトリウムのｆ！１酸酸酸溶性溶液給し、限界電流密
度以下の電流密度である２ないし５＾／ｌ１ｔｈｌｉＧ
Ｓ設定し、イツトリウムのＣＩＯを２ないし４倍に濃縮
する際の電流効率および消ｆｉ電力を求めた結果を表１
に示す。Example 1-5 Various pI-1 at a concentration of 0.5M01 were applied to an electrodialysis device δ using NeoSepta, an ion exchange membrane manufactured by Tokuyama Sotatsu Co., Ltd. as a cation exchange membrane and an anion exchange membrane. f of yztrium! Monoacid acid-soluble solution is supplied, and the current density is below the critical current density, 2 to 5^/l1thliG
Table 1 shows the results of determining the current efficiency and dissipated fi power when concentrating yttrium CIO by 2 to 4 times with S setting.
Shown below.
実施例１では、電流密度が小さいため中位時間当りの濃
縮幡は少なく生産性は、低いがＩＲドロップが小であり
、単位容積当りの濃縮に要する電力は他の実施例に比較
して小さい。In Example 1, the current density is small, so the concentration field per medium time is small, and the productivity is low, but the IR drop is small, and the power required for concentration per unit volume is small compared to other examples. .
実施例２では、電流密度を実施例１の２．５倍にしたと
ころ電流効率は、同様であったが濃縮に要する電力は約
２倍となった。In Example 2, when the current density was increased to 2.5 times that of Example 1, the current efficiency was the same, but the power required for concentration was approximately twice as high.
実施例３では、ＤＨが小さくなったため、移行する酸の
量が多くなり、電流効率が実施例２に比して低下したが
、濃縮に要する電力は電気透析に必要な電圧が低下した
ので実施例２とほぼ同様であった。In Example 3, the amount of acid transferred increased due to the decrease in DH, and the current efficiency was lower than in Example 2. However, the electric power required for concentration was reduced because the voltage required for electrodialysis was reduced. It was almost the same as Example 2.
実施例４では、４倍に濃縮したところ濃度差により電流
効率が実施例２に比べて低下した。In Example 4, when the solution was concentrated 4 times, the current efficiency was lower than that in Example 2 due to the concentration difference.
実施例５では、ｌ）Ｈの低下により電気透析の電圧は低
くなるが、電流効率が低くなり濃縮に要する電力は、大
きくなる。In Example 5, the voltage for electrodialysis is lowered due to the decrease in l)H, but the current efficiency is lowered and the power required for concentration is increased.
一方、加熱により０．５Ｍ０１／ｌ−の溶液を１Ｍ０Ｉ
／Ｌに濃縮を行おうとすると、約６３０Ｗｈ／Ｌのエネ
ルギーか必要であり、また２Ｍ０１／Ｌに濃縮する場合
には、約１９００Ｗｈ／Ｌのエネルギーを必要とする。On the other hand, by heating the solution of 0.5M01/l-
To concentrate to 2M01/L, approximately 630Wh/L of energy is required, and to concentrate to 2M01/L, approximately 1900Wh/L is required.
比較例 １
イツトリウム濃度が、０．５Ｍｏｌで硝酸濃度が２規定
の溶液を実施例と同様に電気透析を行ったところ、電圧
は低下するもののイツトリウムの濃縮に関する電流効率
は、５％であった。Comparative Example 1 When a solution with a yttrium concentration of 0.5Mol and a nitric acid concentration of 2N was subjected to electrodialysis in the same manner as in the example, the current efficiency for concentrating yttrium was 5%, although the voltage decreased.
比較例 ２
また、イツトリウムの８２度が０．５ＭｏｌでｐＨが４
．５の溶液を：Ａ整し、同様に電気透析を行ったが溶液
から沈澱が生じ、膜面にも析出物が認められ透析電圧は
３倍になり事実上電気透析は不可能であった。Comparative Example 2 In addition, 82 degrees of yttrium is 0.5Mole and the pH is 4.
．． The solution of No. 5 was adjusted to A and subjected to electrodialysis in the same manner, but precipitates were formed from the solution, precipitates were also observed on the membrane surface, and the dialysis voltage was tripled, making electrodialysis virtually impossible.
（発明の効果）
以上詳述したように、本発明は電気透析法によるイツト
リウム溶液の濃縮において、溶液のｌ）Ｈを特定するこ
とにより、加熱による濃縮に比して比較的小形の設備で
、約１／１０のエネルｒ−消費で濃縮できるという大さ
な省エネルギー効果を秦づ−るものであり、経済的に非
常に優れたものである。(Effects of the Invention) As described in detail above, the present invention is capable of concentrating a yttrium solution by electrodialysis, by specifying l)H in the solution, and by using relatively small equipment compared to concentration by heating. It has a great energy-saving effect in that it can be concentrated with about 1/10 of the energy consumption, and is very economically superior.
Claims (1)
気透析することにより濃縮することを特徴とするイット
リウム溶液の濃縮方法。1. A method for concentrating a yttrium solution, which comprises adjusting the pH of the yttrium solution to 0.5 to 4 and concentrating it by electrodialysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61178801A JPS6335418A (en) | 1986-07-31 | 1986-07-31 | Concentration of yttrium solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61178801A JPS6335418A (en) | 1986-07-31 | 1986-07-31 | Concentration of yttrium solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6335418A true JPS6335418A (en) | 1988-02-16 |
Family
ID=16054884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61178801A Pending JPS6335418A (en) | 1986-07-31 | 1986-07-31 | Concentration of yttrium solution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6335418A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424985A (en) * | 1990-05-15 | 1992-01-28 | Matsushita Electric Works Ltd | Manufacture of electric laminate |
| JPH0424986A (en) * | 1990-05-15 | 1992-01-28 | Matsushita Electric Works Ltd | Manufacture of electric laminate |
-
1986
- 1986-07-31 JP JP61178801A patent/JPS6335418A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424985A (en) * | 1990-05-15 | 1992-01-28 | Matsushita Electric Works Ltd | Manufacture of electric laminate |
| JPH0424986A (en) * | 1990-05-15 | 1992-01-28 | Matsushita Electric Works Ltd | Manufacture of electric laminate |
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