《采用溶剂萃取从废旧锂离子电池中回收有价金属.》.pdf
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Recovery of metal values from
spent lithium-ion battery leach
solutions with solvent extraction
Guochun Yan
Contents
What Why How
2
What
Solvent extraction
Spent lithium-ion battery
3
Why
Global lithium demand
Environment protection
More strict legislation
Battery economic
4
How
Dismantling Leaching Solvent extraction
5
Leaching
Agent:H SO +H O
2 4 2 2
Codition:75 0C,1h,3OOr/min
Extraction ratio:Co,Li95%
Typical composition of leach solution(g/L)
Co2+ Li+ Fe3+ Al3+ Ni2+ Cu2+
16.9 3.8 0.6 0.7 0.15 0.4
6
Extracting
Extractant:lonquest 801+acogra M5640
for (Al,Fe,Cu)
Cyanex272 for (Co)
Diulent:Shellsol D70
The metal pH0.5 values in the extract system
Metal Fe Al Cu Co Li Ni
pH0.5 0.5 3.15 2.00 N/A N/A N/A
7
Extracting(1)
Extraction order
FeCuAlCo,Ni,Li
0
Metal pH isotherms at an O:A ratio of 1:2 and 22 C
8
Extracting(1)
Metal
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