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Title:
MULTISTAGE INDEPENDENT WATER CIRCULATION FLOTATION METHOD FOR USED LEAD-ACID BATTERIES
Document Type and Number:
WIPO Patent Application WO/2021/036919
Kind Code:
A1
Abstract:
A multistage independent water circulation flotation method for used lead-acid batteries, comprising: step S1, crushed material extraction; step S2, first-stage hydraulic sorting; step S3, hydrodynamic sorting; and step S4, second-stage hydraulic sorting. Multiple times of water circulation sorting of used lead-acid batteries can increase the total recovery rate of lead and the recovery rate of plastic in the used lead-acid batteries, thereby reducing the mutual mixing rate in material sorting, reducing loss, and reducing pollution to the environment. Liquids in a first-stage hydraulic sorting device, a hydrodynamic sorting device, and a second-stage hydraulic sorting device circulate independently of one another and do not interfere with each other. The material is neutralized in a first-stage hydraulic sorting box by adding sodium carbonate, and the material and liquid are alkaline. The service life of equipment can be prolonged, and the sorting accuracy can be ensured while achieving large production.

Inventors:
FEI YUEBO (CN)
CHEN BINGMIN (CN)
YUAN CHENG (CN)
CHEN LIHUA (CN)
SHI HUANHUAN (CN)
Application Number:
PCT/CN2020/110418
Publication Date:
March 04, 2021
Filing Date:
August 21, 2020
Export Citation:
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Assignee:
ZHEJIANG ZHEKUANG HEAVY IND CO LTD (CN)
International Classes:
H01M10/54
Domestic Patent References:
WO2015084950A12015-06-11
Foreign References:
CN110813520A2020-02-21
CN105846005A2016-08-10
CN105846005A2016-08-10
CN107623151A2018-01-23
CN104752786A2015-07-01
CN103490115A2014-01-01
Attorney, Agent or Firm:
HANGZHOU ZHONGLI INTELLECTUAL PROPERTY AGENCY OFFICE (GENERAL PARTNERSHIP) (CN)
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