METHOD FOR PREPARING GRANULAR TITANIUM-BASED LITHIUM ION SIEVE ADSORBENT HAVING HIGH ADSORPTION CAPACITY

WIPO Patent Application WO/2023/083065

A1

The present invention is a method for preparing a granular titanium-based lithium ion sieve adsorbent having a high adsorption capacity. The method comprises: step 1, preparing a titanium-based lithium-ion sieve precursor powder; step 2, preparation of a granular titanium-based lithium ion sieve adsorbent having a high adsorption capacity: 1) precursor powder pretreatment, 2) composite glue preparation, 3) doping, blending, and homogenizing, 4) forming and granulating, and 5) elution and substitution. The granular adsorbent prepared in the present invention has a relatively high porosity, and during lithium extraction from salt lake brine or simulated brine, shows good suspension, rapid absorption and desorption rates, and high lithium extraction activity, with both lithium ion selectivity and elution rates reaching 95% or higher; the present granular adsorbent has a stable structure, low dissolution loss, and a long cycle life; and the forming and granulating process of the present granular adsorbent is simple and easy to control, so that industrialization is easy to achieve.

YANG JINFENG (CN)
MENG QIANG (CN)
BAN WENJUN (CN)
CAI RONGFU (CN)
DAI YIHUA (CN)

PCT/CN2022/129167

May 19, 2023

November 02, 2022

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CHENGDU CHEMPHYS CHEMICAL IND CO LTD (CN)
SINOLITHIUM MAT LIMITED (CN)

C22B26/12; B01J20/06; B01J20/28; B01J20/30; B01J20/32; C22B3/24

CN112871126A	2021-06-01
CN109225124A	2019-01-18
CN114345291A	2022-04-15
CN109012600A	2018-12-18
CN102631897A	2012-08-15
CN110975795A	2020-04-10
JP2004025113A	2004-01-29

CHENGDU JIUDING TIANYUAN INTELLECTUAL PROPERTY AGENCY LTD. (CN)

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