Patent "A Method for Recovering Valuable Metals from Waste Lithium Batteries"

Release time:

2012-07-09 17:20

Method for recovering valuable metals from waste lithium batteries

Type of patent: Invention

Patent number: 201010262198

Patent Application Date: 2010/08/25

Public Announcement No:

Public (announcement) date: 2010/12/22

Classification number: C22B 7/00;C22B 15/00;C22B 23/00;C22B 21/00

Applicator (Patent): Shenzhen Taili Waste Battery Recycling Technology Co., Ltd.

Inventive (design) person: Zhang Yongxiang

Applicant: Shenzhen Taili Waste Battery Recycling Technology Co., Ltd.

Country of provinces and cities: 94 [China | Shenzhen]

  

专利《一种从废旧锂电池回收有价金属的方法》

 

This patent is protected by national intellectual property laws. If you wish to use this patent, please contact the patentee.

Technical brief:

The invention discloses a method for recovering valuable metals from waste lithium batteries. The discharged waste lithium batteries are mechanically crushed and calcined at a high temperature of 350 ℃-400 ℃ to obtain materials containing cobalt, copper and aluminum, and then sodium hydroxide solution with a content of 5%-10% is added to react for 2-3 hours, and the alkali solution is filtered, washed and dried to obtain materials containing cobalt and copper, add a certain concentration of sulfuric acid and Na2S2O3 acid to the material containing cobalt and copper, stir and dissolve, add an extractant to extract copper, and add an extractant to extract cobalt to the solution after extracting copper. The method of the invention is simple, efficient and low in recovery cost.

The main claim:

A method for recovering valuable metals from waste lithium batteries, characterized in that it comprises the following steps: (1) mechanically pulverizing the discharged waste lithium batteries; (2) calcining at a high temperature of 350 ℃-400 ℃ to obtain materials containing cobalt, copper and aluminum; (3) adding sodium hydroxide solution with a content of 5%-10%, reacting for 2-3 hours, filtering and washing the lye, drying to obtain materials containing cobalt and copper; (4) adding a certain concentration of sulfuric acid and Na ↓[2]s ↓[2]O ↓[3] to the materials containing cobalt and copper, stirring and dissolving, adding extractant to extract copper; (5) adding extractant to the solution after copper extraction to extract copper

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