METHOD FOR SAFELY LEACHING WASTE BATTERY AND APPLICATION

WIPO Patent Application WO/2022/252602

A1

The present invention relates to the technical field of waste battery recovery. Disclosed are a method for safely leaching a waste battery and an application. The method comprises the following steps: discharging, roasting, and screening a waste lithium battery to obtain copper aluminum foil and battery powder; adding the battery powder to water, and then adding a floatation agent for performing floatation to obtain a floating material and a sediment; using lye to leach the floating material and filtering to obtain a filtrate b and a filter residue a; and washing the filter residue a, filtering to obtain a filter residue c, and adding a leaching agent and a reducing agent for leaching to obtain a leaching liquid. In the present invention, safe, efficient, and low-energy-consumption physical methods such as roasting, screening, and flotation are combined with chemical methods such as dilute alkali dissolution, and aluminum in the waste lithium battery can be removed from the source.

YU HAIJUN (CN)
ZHONG YINGSHENG (CN)
XIE YINGHAO (CN)
LI CHANGDONG (CN)
ZHANG XUEMEI (CN)

PCT/CN2021/142932

December 08, 2022

December 30, 2021

Click for automatic bibliography generation  

GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP VEHICLES RECYCLING CO LTD (CN)

B03D1/00; C22B7/00; C22B1/02; C22B23/00; C22B26/12; C22B47/00; H01M10/54

CN113502396A	2021-10-15
CN101450815A	2009-06-10
CN106241769A	2016-12-21
CN101942569A	2011-01-12
CN105821445A	2016-08-03
CN107394302A	2017-11-24
KR102154599B1	2020-09-10
KR20200123659A	2020-10-30

ADVANCE CHINA IP LAW OFFICE (CN)

View/Download PDF      PDF Help

Previous Patent: FIRE-EXTINGUISHING AGENT CAPABLE OF EXTINGUISHING COMBUSTION OF ALUMINUM SLAG, AND PREPARATION METHO...

Next Patent: METHOD FOR TREATING HIGH-SALT WASTEWATER BY DISCHARGING WASTE BATTERIES AND USE THEREOF