Title:
METHOD FOR USING VACUUM MICROWAVE DRYING TO PREPARE ULTRA DRY LITHIUM SALT FOR LITHIUM BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/253277
Kind Code:
A1
Abstract:
A method for using vacuum microwave drying to prepare an ultra dry lithium salt for a lithium battery, the method being as follows: placing a lithium salt wet product into a vacuum microwave drying apparatus, initiating the apparatus to cause the vacuum degree to be less than 500 mmHg, and initiating microwaves to heat the apparatus. After microwave operation is completed, evaporable impurities in the lithium salt can be removed, to obtain an ultra dry lithium salt suitable for a lithium ion battery. The lithium salt wet product may be a solution having a solid content of 30% or greater, a slurry, or a solid. Using vacuum microwave drying, a lithium salt can be highly efficiently and evenly heated, effectively removing evaporable impurities in the lithium salt.
Inventors:
CHAN ALBERT SUN-CHI (CN)
TSE MAN KIN (CN)
TONG ZUJI (CN)
LI ZHENFENG (CN)
SUN WAI YIN RAYMOND (CN)
TSE MAN KIN (CN)
TONG ZUJI (CN)
LI ZHENFENG (CN)
SUN WAI YIN RAYMOND (CN)
Application Number:
PCT/CN2020/079090
Publication Date:
December 24, 2020
Filing Date:
March 13, 2020
Export Citation:
Assignee:
LEE & MAN CHEMICAL COMPANY LTD (CN)
International Classes:
F26B3/347
Foreign References:
| CN104129773A | 2014-11-05 | |||
| CN107204466A | 2017-09-26 | |||
| CN204944124U | 2016-01-06 | |||
| JPH10310425A | 1998-11-24 |
Attorney, Agent or Firm:
GUANGZHOU KEYUE I.P. LAW OFFICE (CN)
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