首页> 外国专利> HIGH-RATE RECOVERY OF VALUABLE METALS SUCH AS COBALT AND LITHIUM FROM WASTE LITHIUM SECONDARY BATTERIES

HIGH-RATE RECOVERY OF VALUABLE METALS SUCH AS COBALT AND LITHIUM FROM WASTE LITHIUM SECONDARY BATTERIES

机译:从废锂二次电池中高效率地回收钴和锂等贵重金属

摘要

The present invention that it relates to a method for recovering valuable metals such as cobalt and lithium as high purity from the waste lithium ion secondary battery, and more particularly, by using a sodium hydroxide and additives separate the aluminum in the liquid phase to the waste lithium ion secondary battery aluminum melting process, the mineral acid leaching process, the first neutralization step for adding a neutralizing agent to solid-liquid separation, and then adjusted to pH 3.0 ~ 4.5 iron and aluminum or the like to dissolve the residue of leaching the dissolved residue with an inorganic oxide and a reducing agent in a liquid state, the strong alkali of was added to the second neutralization step to separate the copper or the like at pH 4.8 ~ 5.6, that is configured to re-pulping process, the solvent extraction process for separating lithium and cobalt to handle the dissolved residue and to its features, especially waste lithium ion secondary prior to leaching the aluminum cell with an inorganic acid in a subsequent process by separating dissolved aluminum by using caustic soda and additives Minimize the process load due to, and through a two-stage neutralizing process for efficiently separating a metal such as iron, aluminum, copper, and to minimize the amount of neutralizing agent, and Lee pulping step and the solvent extraction process the recovery rate and purity of the cobalt over the a is to be provide a means to increase.
机译:本发明涉及一种从废弃的锂离子二次电池中回收高纯度的有价值的金属,例如钴和锂的方法,更具体地,涉及通过使用氢氧化钠和添加剂将液相中的铝分离到废料中的方法。锂离子二次电池的铝熔炼过程,无机酸浸出过程中,首先在中和步骤中加入中和剂进行固液分离,然后调节pH至3.0〜4.5铁和铝等以溶解浸出残渣用无机氧化物和还原剂以液态溶解残余物,将强碱加入第二中和步骤中以分离pH 4.8〜5.6的铜等,从而将其重新制浆,分离锂和钴的萃取工艺,以处理溶解的残渣及其特征,尤其是在浸出铝之前先处理废锂离子通过使用苛性钠和添加剂分离溶解的铝,在随后的过程中将无机酸加入um电池尽量减少中和剂的用量,并在李制浆步骤和溶剂萃取过程中,钴的回收率和纯度要超过a,以提供提高产量的手段。

著录项

  • 公开/公告号KR20050112487A

    专利类型

  • 公开/公告日2005-11-30

    原文格式PDF

  • 申请/专利权人 GKM CO. LTD.;

    申请/专利号KR20040040586

  • 发明设计人 OH DONG IK;CHOI DONG JIN;PARK JONG OH;

    申请日2004-05-25

  • 分类号H01M10/54;

  • 国家 KR

  • 入库时间 2022-08-21 21:27:57

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