ALUMINUM-BASED LITHIUM ION SIEVE, PREPARATION METHOD THEREFOR AND USE THEREOF

Title:

ALUMINUM-BASED LITHIUM ION SIEVE, PREPARATION METHOD THEREFOR AND USE THEREOF

Document Type and Number:

WIPO Patent Application WO/2022/127316

Kind Code:

A1

Abstract:

An aluminum-based lithium ion sieve, a preparation method therefor and the use thereof. The aluminum-based lithium ion sieve is AI(OH)3-coated Li2SO4·2AI(OH)3·nH2O, wherein n is 1-4. The preparation method comprises: using a reaction between a lithium salt and an aluminum salt and a base to obtain an adsorbent intermediate, LiOH·2AI(OH)3·nH2O; then passing same through dilute sulfuric acid, to obtain an aluminum-based lithium adsorbent, Li2SO4·2AI(OH)3·nH2O; and filtering and washing the adsorbent, and then mixing same with meta-aluminate, and then adjusting the pH to obtain AI(OH)3-coated Li2SO4·2AI(OH)3·nH2O. The aluminum-based lithium ion sieve has the advantages of a high adsorption capacity and good stability, can efficiently recover low-concentration lithium in industrial wastewater, and is coated with aluminum hydroxide, such that the structure can be effectively ensured not to be corroded.

Inventors:

YANG DING (CN)
CHEN RUOKUI (CN)
QIAO YANCHAO (CN)
ZHENG XIANLIANG (CN)
TAN FENG (CN)
LI CHANGDONG (CN)

Application Number:

PCT/CN2021/123400

Publication Date:

June 23, 2022

Filing Date:

October 13, 2021

Export Citation:

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Assignee:

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

International Classes:

B01J20/08; B01J20/30; C02F1/28; C22B3/24; C22B7/00; C22B26/12; H01M10/54; C02F101/10

Domestic Patent References:

WO2015097201A1

2015-07-02

Foreign References:

CN108472645A	2018-08-31
CN108993376A	2018-12-14
CN103560236A	2014-02-05
CN103178258A	2013-06-26
CN1348225A	2002-05-08

Other References:

SHI, YONGKANG ET AL.: "Analysis of Electrochemical Properties of Manganese-Lithium Cathode Materials", NEIJIANG SCIENCE & TECHNOLOGY, no. 11, 30 November 2011 (2011-11-30), pages 57,83, XP055943117, ISSN: 1006-1436

Attorney, Agent or Firm:

JIAQUAN IP LAW (CN)

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