Process for recovering valuable metals from waste lithium batteries

A technology of valuable metals and lithium batteries, applied in the direction of improving process efficiency, etc., can solve problems such as difficult to guarantee product quality, incomplete dealumination, etc., and achieve high product recovery rate, high recovery rate, and simple process flow Effect

Inactive Publication Date: 2011-08-24
常州今创博凡能源新材料有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the application of this method is simple, the dealumination is not complete, and the actual production can

Method used

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  • Process for recovering valuable metals from waste lithium batteries
  • Process for recovering valuable metals from waste lithium batteries

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] The invention relates to a process for recovering valuable metals from waste lithium batteries, taking the treatment of one ton of waste lithium ion batteries as an example:

[0024] Such as figure 1 : The first step: remove the outer packaging of the waste lithium battery to obtain single cells, put these single cells into a steel container with water and electronic conductive agent, short-circuit the positive and negative electrodes of the single cells to fully discharge Then remove the shell, because considering that the electrolytic fluid of the lithium battery is an organic solution that dissolves LiPF6, it will react after contacting water and generate highly toxic hydrogen fluoride, so the battery pole core after shelling is soaked in alkali immediately, This can eliminate the impact of the acid generated by the hydrolysis of LiPF6 on the...

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Abstract

The invention relates to a process for recovering valuable metals from waste lithium batteries, comprising the processing steps of pretreatment, a leaching process, chemical subtraction, extraction separation and the like, thus realizing comprehensive recovery of valuable metals such as cobalt, copper, nickel, aluminum and the like. The invention has the advantages of simple process, low energy consumption and high product recovery rate.

Description

technical field [0001] The invention belongs to the technical field of waste battery recovery, and in particular relates to a process for recovering valuable metals from waste lithium batteries. Background technique [0002] Lithium-ion batteries are widely used, and the production and consumption are increasing year by year. The increasing amount of scrapped batteries has caused serious pollution to the environment. However, cobalt, copper, nickel and other metals in waste lithium-ion batteries account for about 20%, 15% and 6% respectively, which are of great recycling value. In particular, cobalt metal is scarce and expensive, and there is no separate deposit. Most of it is associated with copper and nickel ores, and its grade is low. The proportion of metal cobalt in the battery is much higher than that of cobalt ore. Recovering cobalt, copper, nickel and other metals from waste lithium-ion batteries means that resources utilize rare and precious metals and reduce poll...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B3/04C22B3/20C22B15/00C22B21/00C22B23/00C22B26/00
CPCY02P10/20
Inventor 程洁红诸文源林民武周全法陈娴李波朱炳龙张锁荣
Owner 常州今创博凡能源新材料有限公司
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