Title:
TREATMENT METHOD FOR CARBONATE LITHIUM CLAY
Document Type and Number:
WIPO Patent Application WO/2024/040891
Kind Code:
A1
Abstract:
The present application belongs to the technical field of mineral extraction, and disclosed is a treatment method for carbonate lithium clay. By means of repeated scrubbing and mixed material particle grading in the method, coarse-grained calcite in carbonate lithium clay can be effectively removed, and small-particle materials can be conveniently enriched; then effective secondary separation is conducted according to the particle size and the impurity content; particles with different compositions are distinguished and subjected to desulfurization and decarbonization, calcite removal and lithium flotation in a step-by-step manner, such that the content of impurities such as iron and calcium in a product is further reduced; and finally, the lithium enrichment multiple of the obtained lithium concentrate reaches twice or above, the comprehensive recovery rate of lithium reaches 75% or above, and the removal rate of impurity elements such as iron, calcium and sulfur is larger than 80%. The treatment method takes full advantage of the characteristics of the carbonate lithium clay and combines the scrubbing process with low investment and low operation cost with the flotation process with high adaptability and good separation performance according to the situation that the lithium content of the carbonate lithium clay is low, such that the applicable economy is high.
Inventors:
RUAN DINGSHAN (CN)
LI CHANGDONG (CN)
LIU YUNTAO (CN)
ZHANG PENG (CN)
GUO XIAOKE (CN)
LI CHANGDONG (CN)
LIU YUNTAO (CN)
ZHANG PENG (CN)
GUO XIAOKE (CN)
Application Number:
PCT/CN2023/077473
Publication Date:
February 29, 2024
Filing Date:
February 21, 2023
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
International Classes:
C22B26/12; B03D1/00; C22B3/00
Foreign References:
| CN115418498A | 2022-12-02 | |||
| CN113825848A | 2021-12-21 | |||
| CN110038737A | 2019-07-23 | |||
| CN110694788A | 2020-01-17 | |||
| CN111330743A | 2020-06-26 | |||
| CN1270927A | 2000-10-25 | |||
| JP2020164969A | 2020-10-08 |
Attorney, Agent or Firm:
BEIJING YZH IP FIRM (CN)
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