JPH11293356A - Dissolution of cobaltic acid lithium - Google Patents
Dissolution of cobaltic acid lithiumInfo
- Publication number
- JPH11293356A JPH11293356A JP13909298A JP13909298A JPH11293356A JP H11293356 A JPH11293356 A JP H11293356A JP 13909298 A JP13909298 A JP 13909298A JP 13909298 A JP13909298 A JP 13909298A JP H11293356 A JPH11293356 A JP H11293356A
- Authority
- JP
- Japan
- Prior art keywords
- reducing agent
- hydrochloric acid
- acid
- lithium
- cobaltic
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 21
- 239000002253 acid Substances 0.000 title abstract 7
- 238000004090 dissolution Methods 0.000 title description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 8
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 235000019253 formic acid Nutrition 0.000 claims abstract description 4
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 abstract description 7
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 8
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 7
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- RNVCVTLRINQCPJ-UHFFFAOYSA-N o-toluidine Chemical compound CC1=CC=CC=C1N RNVCVTLRINQCPJ-UHFFFAOYSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 150000001868 cobalt Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Landscapes
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はリチウムイオン電池行程
より廃棄されるコバルト酸リチウムや，廃リチウムイオ
ン電池中のコバルト酸リチウムの溶解方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dissolving lithium cobaltate discarded in a lithium ion battery process and a method for dissolving lithium cobaltate in a waste lithium ion battery.
【０００２】[0002]
【従来の技術】リチウムイオン電池製造工程より廃棄さ
れるコバルト酸リチウムや廃リチウムイオン電池中のコ
バルト酸リチウムの溶解方法として，従来から希硝酸，
希硫酸，塩酸を使用して溶解させた後，中和反応を行
い，コバルト塩を製造している。しかしながらコバルト
酸リチウムは硝酸，塩酸に対しては反応性が低く，また
塩酸に対しての反応性は良好であるが反応時に塩素ガス
が発生し安全性に問題がある。2. Description of the Related Art As a method for dissolving lithium cobalt oxide discarded in a lithium ion battery manufacturing process or lithium cobalt oxide in a waste lithium ion battery, dilute nitric acid,
After dissolving using dilute sulfuric acid and hydrochloric acid, a neutralization reaction is performed to produce a cobalt salt. However, lithium cobaltate has low reactivity with nitric acid and hydrochloric acid, and has good reactivity with hydrochloric acid. However, chlorine gas is generated during the reaction, and there is a problem in safety.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記欠点を解
決するものであり，塩酸による溶解反応にさいし，塩素
ガスが発生することなくコバルト酸リチウムを溶解する
方法を提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and has as its object to provide a method for dissolving lithium cobaltate in a dissolution reaction with hydrochloric acid without generating chlorine gas. Things.
【０００４】[0004]
【問題を解決するための手段】上記目的を達成する本発
明の特徴のひとつ，塩素でコバルト酸リチウムを溶解す
るさいに，あらかじめ還元剤を塩酸に溶解させておくこ
とにより，コバルト酸リチウムが塩酸と反応するさいに
発生する塩素ガスが還元剤と反応して塩酸を生成するこ
とにより，塩素ガスの発生を防止するだけでなく，生成
する塩素をコバルト酸リチウムの溶解に利用できること
にある。[Means for Solving the Problems] One of the features of the present invention that achieves the above object is to dissolve lithium cobaltate with chlorine by dissolving the reducing agent in hydrochloric acid in advance. The chlorine gas generated during the reaction with the reducing agent reacts with the reducing agent to generate hydrochloric acid, thereby not only preventing the generation of the chlorine gas but also using the generated chlorine for dissolving the lithium cobalt oxide.
【０００５】また還元剤とコバルト酸リチウムを交互に
分添することにより，塩素ガスと還元剤との激しい反応
を抑制することができる。[0005] By alternately dispensing the reducing agent and lithium cobalt oxide, a vigorous reaction between the chlorine gas and the reducing agent can be suppressed.
【０００６】[0006]
【実施例】以下本発明の方法を実施例にもとづいてさら
に説明する。EXAMPLES The method of the present invention will be further described below with reference to examples.
【０００７】実施例１ 容量２００ｍｌの２口コルベンに塩酸１００ｍｌを入
れ，一方の口をオルソトルイジンを添加した塩素吸収液
２０ｍｌの入ったガス捕集ビンに接続しておく。もう一
方の口よりシュウ酸０．４ｇを加えた後，コバルト酸リ
チウム０．８ｇを添加する。本操作を４回繰り返し，コ
バルト酸リチウムを合計３．２ｇとシュウ酸を合計１．
６ｇ交互に分添し溶解をおこなった。本溶解操作により
コバルト酸リチウムは１００％溶解し，かつ捕集ビンの
吸収液は無色透明であったことから塩素の発生を完全に
防止できることを確認した。EXAMPLE 1 100 ml of hydrochloric acid was placed in a 200 ml two-necked corbane, and one of the two ports was connected to a gas collecting bottle containing 20 ml of a chlorine absorbing solution to which orthotoluidine was added. After adding 0.4 g of oxalic acid from the other port, 0.8 g of lithium cobaltate is added. This operation was repeated four times, and a total of 3.2 g of lithium cobalt oxide and a total of 1.0 g of oxalic acid were obtained.
6 g was alternately dispensed and dissolved. By this dissolving operation, lithium cobalt oxide was dissolved 100%, and the absorbing solution in the collecting bottle was colorless and transparent, so it was confirmed that generation of chlorine could be completely prevented.
【０００８】実施例２ 容量２００ｍｌの２口コルベンに塩酸１００ｍｌを入
れ，一方の口をオルソトルイジンを添加した塩素吸収液
２０ｍｌの入ったガス捕集ビンに接続しておく。もう一
方の口よりギ酸０．２ｇを加えた後，コバルト酸リチウ
ム０．８ｇを添加する。本操作を４回繰り返し，コバル
ト酸リチウムを合計３．２ｇとギ酸を合計０．８ｇ交互
に分添し溶解をおこなった。本溶解操作によりコバルト
酸リチウムは１００％溶解し，かつ捕集ビンの吸収液は
無色透明であったことから塩素の発生を完全に防止でき
ることを確認した。Example 2 100 ml of hydrochloric acid is placed in a 200 ml 2-port corbane, and one of the ports is connected to a gas collecting bottle containing 20 ml of a chlorine absorbing solution containing orthotoluidine. After 0.2 g of formic acid is added from the other mouth, 0.8 g of lithium cobaltate is added. This operation was repeated four times, and dissolution was performed by alternately dispensing 3.2 g of lithium cobaltate and 0.8 g of formic acid in total. By this dissolving operation, lithium cobalt oxide was dissolved 100%, and the absorbing solution in the collecting bottle was colorless and transparent, so it was confirmed that generation of chlorine could be completely prevented.
【０００９】[0009]
【発明の効果】上記実施例で示されるように，本発明の
方法によれば塩酸によるコバルト酸リチウムの溶解にさ
いし，塩素を発生することなく溶解できるばかりでな
く，還元剤の働きにより発生する塩素は塩酸に変換され
る。また交互に分添することにより，溶解反応は穏やか
に振興するので，安全性に優れかつ塩酸の使用量も低減
できる経済的に優れた効果が得られる。As shown in the above examples, according to the method of the present invention, when dissolving lithium cobaltate with hydrochloric acid, not only can it be dissolved without generating chlorine, but also it can be generated by the action of a reducing agent. Chlorine is converted to hydrochloric acid. Also, by alternately dispensing, the dissolution reaction is gently promoted, so that an excellent economical effect is obtained in which the safety is excellent and the amount of hydrochloric acid used can be reduced.
Claims (2)
て，塩酸にあらかじめ還元剤を溶解させた後，化学反応
式より導き出された等量の還元剤とコバルト酸リチウム
を添加する溶解行程を，交互に繰り返すことを特徴とす
るコバルト酸リチウムの溶解方法。1. A method for dissolving lithium cobaltate, comprising: dissolving a reducing agent in hydrochloric acid in advance, and alternately adding an equal amount of the reducing agent and lithium cobaltate derived from a chemical reaction formula. A method for dissolving lithium cobaltate, wherein the method is repeated.
て，還元剤の種類がシュウ酸，ギ酸である請求項１に記
載のコバルト酸リチウムの溶解方法。2. The method for dissolving lithium cobaltate according to claim 1, wherein the type of the reducing agent is oxalic acid or formic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13909298A JPH11293356A (en) | 1998-04-14 | 1998-04-14 | Dissolution of cobaltic acid lithium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13909298A JPH11293356A (en) | 1998-04-14 | 1998-04-14 | Dissolution of cobaltic acid lithium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11293356A true JPH11293356A (en) | 1999-10-26 |
Family
ID=15237314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13909298A Pending JPH11293356A (en) | 1998-04-14 | 1998-04-14 | Dissolution of cobaltic acid lithium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11293356A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005124921A1 (en) * | 2004-06-21 | 2005-12-29 | Toyota Jidosha Kabushiki Kaisha | Method of disposing of lithium battery |
| CN110668506A (en) * | 2019-09-29 | 2020-01-10 | 昆明理工大学 | Method for recycling and regenerating lithium cobaltate from waste lithium ion battery |
| WO2023048196A1 (en) * | 2021-09-22 | 2023-03-30 | 株式会社アサカ理研 | Treatment method for chlorine gas |
-
1998
- 1998-04-14 JP JP13909298A patent/JPH11293356A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005124921A1 (en) * | 2004-06-21 | 2005-12-29 | Toyota Jidosha Kabushiki Kaisha | Method of disposing of lithium battery |
| JP2006004883A (en) * | 2004-06-21 | 2006-01-05 | Toyota Motor Corp | Lithium battery treating method |
| KR100832900B1 (en) | 2004-06-21 | 2008-05-28 | 도요다 지도샤 가부시끼가이샤 | Method of disposing of lithium battery |
| JP4492222B2 (en) * | 2004-06-21 | 2010-06-30 | トヨタ自動車株式会社 | Lithium battery treatment method |
| CN110668506A (en) * | 2019-09-29 | 2020-01-10 | 昆明理工大学 | Method for recycling and regenerating lithium cobaltate from waste lithium ion battery |
| WO2023048196A1 (en) * | 2021-09-22 | 2023-03-30 | 株式会社アサカ理研 | Treatment method for chlorine gas |
| JPWO2023048196A1 (en) * | 2021-09-22 | 2023-03-30 |
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