JPH029657B2 - - Google Patents
Info
- Publication number
- JPH029657B2 JPH029657B2 JP28594386A JP28594386A JPH029657B2 JP H029657 B2 JPH029657 B2 JP H029657B2 JP 28594386 A JP28594386 A JP 28594386A JP 28594386 A JP28594386 A JP 28594386A JP H029657 B2 JPH029657 B2 JP H029657B2
- Authority
- JP
- Japan
- Prior art keywords
- indium
- powder
- substitution
- add
- added
- 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.)
- Expired
Links
- 229910052738 indium Inorganic materials 0.000 claims description 31
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 6
- 238000005054 agglomeration Methods 0.000 claims description 4
- 230000002776 aggregation Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000003929 acidic solution Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000011701 zinc Substances 0.000 description 17
- 238000006467 substitution reaction Methods 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002471 indium Chemical class 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】
発明の技術分野
本発明は、酸性溶液中のインジウムの回収方法
に関する。DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION The present invention relates to a method for recovering indium in an acidic solution.
発明の従来技術
従来、インジウムの回収は、粗スポンジを塩酸
に溶解し、硫化水素で精硫化処理をした後、精硫
化後液を亜鉛板により置換処理を行つていた。Prior Art of the Invention Conventionally, indium was recovered by dissolving crude sponge in hydrochloric acid, performing a refining treatment with hydrogen sulfide, and then replacing the refined sulfurized solution with a zinc plate.
この方法では、亜鉛板に付着した金属インジウ
ムの剥取りを容易にするため、液中の酸濃度を高
くし、常時H2ガスが発生するような中で、置換
反応を行わなければならなかつた。 In this method, in order to easily remove metallic indium adhering to the zinc plate, the acid concentration in the solution was increased and the substitution reaction had to be carried out in an environment where H2 gas was constantly generated. .
さらにこの剥取り作業の機械化、自動化が困難
という問題があつた。 Furthermore, there was a problem that it was difficult to mechanize and automate this stripping work.
一方亜鉛板に代えて、亜鉛末のみで置換処理を
するとすれば、置換されたインジウムが塊状化
し、好ましい粉状金属が得られなかつた。 On the other hand, if the substitution treatment was performed using only zinc powder instead of the zinc plate, the substituted indium would become lumpy, and a desirable powdered metal could not be obtained.
そこで本発明者らは、上記欠点を解決すべく以
下の発明をなした。 Therefore, the present inventors made the following invention in order to solve the above-mentioned drawbacks.
発明の構成
本発明は、インジウムを含有するpH＝1.0〜3.5
の溶液をあるいは、前記pHに調整されていない
場合は、前記のpHの範囲に調整後Na2S2O3を添
加し、液温を25〜60℃に調整した後Zn末を添加
することにより、インジウムを置換回収し、イン
ジウムの塊状化を防止しつつ、高純度のインジウ
ムを得ることを特徴とする酸性溶液中のインジウ
ムの回収方法に関する。Structure of the Invention The present invention provides indium-containing pH=1.0 to 3.5
Alternatively, if the pH is not adjusted to the above pH range, add Na 2 S 2 O 3 after adjusting the pH to the above pH range, and add Zn powder after adjusting the liquid temperature to 25 to 60°C. The present invention relates to a method for recovering indium in an acidic solution, which is characterized by recovering indium by substitution and obtaining high-purity indium while preventing agglomeration of indium.
発明の具体的説明
本発明の対象液は、インジウムを含有する液で
ある。pH＝1.0〜3.5の範囲に入つていない場合
は、予めpH調整を行う。pHが1.0以下であると、
後の置換剤であるZn末の使用が過剰に必要とな
るためである。pH＝3.5以上では、In+3がIn
（OH）3を生成するためである。DETAILED DESCRIPTION OF THE INVENTION The target liquid of the present invention is a liquid containing indium. If the pH is not within the range of 1.0 to 3.5, adjust the pH in advance. If the pH is below 1.0,
This is because Zn powder, which is the subsequent replacement agent, needs to be used in excess. At pH=3.5 or higher, In +3 is In
This is to generate (OH) 3 .
pHが上記の範囲であれば、Na2S2O3を添加す
る。この添加量は、通常0.5〜５ｇ／である。 If the pH is in the above range, add Na 2 S 2 O 3 . The amount added is usually 0.5 to 5 g/.
この添加により後のZn末置換時のインジウム
の塊状化が防止できるのである。 This addition can prevent agglomeration of indium during subsequent Zn powder substitution.
また、インジウムが塊状化しないためZnのま
き込みが少なく高純度のインジウムの回収が可能
である。 In addition, since indium does not form into agglomerates, less Zn is incorporated, making it possible to recover highly pure indium.
さらに置換剤であるZn末は、1.0〜1.4当量前
後、インジウムに対し添加する。またZn末は高
純度であるほど好ましい。不純物が混入すること
を嫌うからである。置換時の液温は25〜60℃の範
囲で行なう。液温が25℃以下では置換速度が遅く
なり、60℃以上になると生成したインジウムメタ
ルが再溶解し、置換効率が低下するためである。 Furthermore, about 1.0 to 1.4 equivalents of Zn powder, which is a substituent, is added to indium. Further, the higher the purity of the Zn powder, the more preferable it is. This is because contamination with impurities is disliked. The liquid temperature during replacement is in the range of 25 to 60°C. This is because if the liquid temperature is below 25°C, the substitution rate will be slow, and if it is above 60°C, the generated indium metal will be re-dissolved, reducing the substitution efficiency.
以上の反応は、好ましくは回転型の反応槽を用
いることが好ましい。回転型であるZnとの置換
効率を高めることができるからである。また、
Zn末は好ましくは予め水でリパルプした後添加
することが好ましく、Zn末の利用率を10％以上
向上することができる。 For the above reaction, it is preferable to use a rotating reaction tank. This is because the substitution efficiency with Zn, which is a rotating type, can be increased. Also,
The Zn powder is preferably added after being repulped with water in advance, and the utilization rate of the Zn powder can be improved by 10% or more.
実施例
インジウムの粗スポンジを塩酸で溶解し、硫化
水素で不純物を処理した後液を処理対象液とし
た。処理液は、In70ｇ／、Sn2.3mg／、Pb1.1
mg／、Cd6.06mg／、Zn145.6ｇ／、Fe0.4
ｇ／であり、PHは、1.4であつた。Example A rough indium sponge was dissolved in hydrochloric acid, impurities were treated with hydrogen sulfide, and the resulting solution was used as a liquid to be treated. Processing liquid: In70g/, Sn2.3mg/, Pb1.1
mg/, Cd6.06mg/, Zn145.6g/, Fe0.4
g/, and the pH was 1.4.
この液にNa2S2O3を２ｇ／予め添加し、液温
を30℃に調整した後、Zn末をInに対し1.2当量添
加した。 2 g of Na 2 S 2 O 3 was added to this solution in advance and the temperature of the solution was adjusted to 30° C., and then Zn powder was added in an amount of 1.2 equivalents based on In.
この処理により、粒状インジウムを得た。この
処理の際、インジウムは塊状化せず、亜鉛末の巻
き込みによる汚染もなく、好ましい粒状インジウ
ムを得ることができた。 Through this treatment, granular indium was obtained. During this treatment, indium did not form into lumps, and there was no contamination due to entrainment of zinc dust, and preferable granular indium could be obtained.
この粒状インジウムNaOHで処理し、粗イン
ジウムメタルを得た。 This granular indium was treated with NaOH to obtain crude indium metal.
これにより得られた上記メタル中の不純物は、
Pb0.0029wt％、Znは0.02wt％と低く、高品位の
インジウム（99.6wt％）を得ることができた。さ
らに上記メタルをIn電解処理を行い、高純度のイ
ンジウム（99.99wt％以上）を得た。 The impurities in the metal thus obtained are:
Pb was low at 0.0029wt%, Zn was low at 0.02wt%, and high-grade indium (99.6wt%) could be obtained. Furthermore, the above metal was subjected to In electrolytic treatment to obtain high purity indium (99.99wt% or more).
発明の効果
以上のように、本発明を実施することにより、
以下の効果を得ることができる。Effects of the invention As described above, by implementing the present invention,
You can obtain the following effects.
(1) Na2S2O3の添加により、粗インジウムの塊状
化を防止できる。(1) Addition of Na 2 S 2 O 3 can prevent crude indium from agglomerating.
(2) 温度とpHを予め調整することにより、Zn末
の利用率を高めると同時にインジウムとの置換
効率を上昇できる。(2) By adjusting the temperature and pH in advance, it is possible to increase the utilization rate of Zn powder and at the same time increase the replacement efficiency with indium.
(3) 塊状化が防止できるため、Znの巻き込みを
防止でき、高純度の粗メタルが容易に得られ
る。(3) Since agglomeration can be prevented, entrainment of Zn can be prevented, and highly pure crude metal can be easily obtained.
(4) またNa2S2O3が添加されているため、スラグ
へのインジウム移行率を低くするとができる。
即ち、無添加の場合は約７％もあるが、添加し
た場合は約1.0％と極めて低い。(4) Also, since Na 2 S 2 O 3 is added, the rate of indium transfer to slag can be lowered.
That is, it is about 7% without additives, but it is extremely low at about 1.0% when additives are added.
(5) 回転炉により行うことにより、Znとの置換
効率を高めることができる。(5) By using a rotary furnace, the replacement efficiency with Zn can be increased.
Claims (1)
あるいは、前記pHに調整されていない場合は、
前記のpHの範囲に調整後Na2S2O3を添加し、液
温を25〜60℃に調整した後Zn末を添加すること
により、インジウムを置換回収し、インジウムの
塊状化を防止しつつ、高純度のインジウムを得る
ことを特徴とする酸性溶液中のインジウムの回収
方法。1. A solution containing indium with a pH of 1.0 to 3.5, or if the pH has not been adjusted to the above,
After adjusting the pH to the above range, add Na 2 S 2 O 3 and adjust the liquid temperature to 25 to 60°C and then add Zn powder to recover indium by displacement and prevent agglomeration of indium. A method for recovering indium in an acidic solution, which is characterized by obtaining high-purity indium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28594386A JPS63140047A (en) | 1986-12-02 | 1986-12-02 | Recovering method for indium in acid liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28594386A JPS63140047A (en) | 1986-12-02 | 1986-12-02 | Recovering method for indium in acid liquor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63140047A JPS63140047A (en) | 1988-06-11 |
| JPH029657B2 true JPH029657B2 (en) | 1990-03-02 |
Family
ID=17697986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28594386A Granted JPS63140047A (en) | 1986-12-02 | 1986-12-02 | Recovering method for indium in acid liquor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63140047A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4598921B2 (en) * | 2000-06-09 | 2010-12-15 | 出光興産株式会社 | Indium recovery method |
| RU2218244C1 (en) * | 2002-04-05 | 2003-12-10 | Акционерное общество открытого типа "Челябинский электролитный цинковый завод" | Method for producing high-purity indium powder |
| JP2006348340A (en) * | 2005-06-15 | 2006-12-28 | Mitsui Kushikino Mining Co Ltd | Method for manufacturing metal containing indium/tin |
| WO2007102207A1 (en) * | 2006-03-08 | 2007-09-13 | Mitsui Mining & Smelting Co., Ltd. | Process for producing indium-containing metal |
| JP4895013B2 (en) * | 2006-08-30 | 2012-03-14 | 三菱マテリアル株式会社 | Indium recovery method |
| JP4952899B2 (en) * | 2006-08-31 | 2012-06-13 | 三菱マテリアル株式会社 | Indium recovery method |
| JP5103023B2 (en) * | 2007-01-05 | 2012-12-19 | Ｄｏｗａメタルマイン株式会社 | Liquid and powder mixing apparatus, metal recovery system, liquid and powder mixing method, and metal recovery method |
| FI122676B (en) * | 2010-10-12 | 2012-05-15 | Outotec Oyj | Method for treating a solution containing zinc sulphate |
-
1986
- 1986-12-02 JP JP28594386A patent/JPS63140047A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63140047A (en) | 1988-06-11 |
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