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1. CN101597689 - High-efficiency purification process for acid leaching solutions of active substances in waste lithium batteries

官庁 中華人民共和国
出願番号 200910304143.0
出願日 08.07.2009
公開番号 101597689
公開日 09.12.2009
特許番号 101597689
特許付与日 01.12.2010
公報種別 B
IPC
C22B 3/46
C化学;冶金
22冶金;鉄または非鉄合金;合金の処理または非鉄金属の処理
B金属の製造または精製;原料の予備処理
3湿式による鉱石または濃縮物からの金属化合物の抽出
20溶液,例.浸出によって得られたもの,の処理または浄液
44化学的方法によるもの
46置換によるもの,例.セメンテーションによるもの
C22B 23/00
C化学;冶金
22冶金;鉄または非鉄合金;合金の処理または非鉄金属の処理
B金属の製造または精製;原料の予備処理
23ニッケルまたはコバルトの採取
CPC
Y02P 10/20
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
10Technologies related to metal processing
20Process efficiency
出願人 Central South University
中南大学
発明者 Tang Xincun
唐新村
Man Ruilin
满瑞林
Zhang Yang
张阳
Chen Liang
陈亮
Zeng Zhiwen
曾智文
Li Lianxing
李连兴
Xiao Yuanhua
肖源化
Wang Zhimin
王志敏
Qu Yi
瞿毅
代理人 yan yong
长沙市融智专利事务所 43114
発明の名称
(EN) High-efficiency purification process for acid leaching solutions of active substances in waste lithium batteries
(ZH) 废旧锂电池中活性物质酸性浸出液的高效净化工艺
要約
(EN)
The invention discloses a high-efficiency purification process for acid leaching solutions of active substances in waste lithium batteries. The process comprises working procedures of the purification of the acid leaching solutions of the active materials of positive poles in the waste lithium batteries. The process is mainly characterized by adopting an improved hydrolysis precipitation method and an improved oxidation precipitation method to remove impurity ions in the acid leaching solutions. The process comprises four steps of removing iron by a sodium jarosite method; removing manganese by the oxidation precipitation method; removing aluminum by ammonium bicarbonate; and removing copper by sodium carbonate. A method used by the invention has the advantages of low cost, large operation flexibility, and high cobalt recovery rate, can comprehensively recover valuable metals such as the aluminum, the copper, the manganese and the like, and is suitable for lithium cobalt oxide battery materials which are widely used at present and heavily doped battery materials which may be used in the future. The use of the method can ensure that the total recovery rate of cobalt in waste lithium ion batteries is about 98 percent, and the content of impurities is lower than 2 percent.

(ZH)

本发明公开了一种废旧锂电池中活性物质酸性浸出液的高效净化工艺。废旧锂电池正极活性材料酸浸液净化工序。其主要特点是采用改进的水解沉淀法和氧化沉淀法除去酸浸液中的杂质离子。包括以下四个步骤:黄钠铁矾法除铁;氧化沉淀法除锰,碳酸氢氨除铝;碳酸钠除铜。本发明所使用的方法成本低,操作弹性大,钴回收率高,能综合回收铝、铜和锰等有价金属,适用于目前广泛使用的钴酸锂电池材料和未来可能使用的大量掺杂的电池材料。使用该方法可使废旧锂离子电池中钴的总回收率约为98%,杂质含量低于2%。