一种从含锂黏土中浸出锂的方法

By using pressure leaching and aluminum inhibitors, the problem of high aluminum impurities in lithium leaching solutions from lithium clay was solved, improving lithium leaching efficiency and recovery rate, and reducing production costs.

CN117431413BActive Publication Date: 2026-07-17JINGMEN GEM NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JINGMEN GEM NEW MATERIAL CO LTD
Filing Date
2023-10-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for extracting lithium from lithium clay result in high aluminum impurities in the leachate, leading to high aluminum removal costs, low lithium recovery rates, and significant lithium loss.

Method used

The lithium leaching efficiency is improved by using a pressure leaching method with aluminum inhibitors. After calcination, the lithium is mixed with water, concentrated sulfuric acid, and aluminum inhibitors and then subjected to pressure leaching. This selectively inhibits aluminum in the leaching residue.

Benefits of technology

This method achieves efficient lithium leaching, reduces production costs, improves lithium recovery and separation efficiency, and reduces the pressure of subsequent aluminum removal.

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Abstract

本发明提供了一种从含锂黏土中浸出锂的方法，所述方法包括以下步骤：(1)对含锂黏土进行焙烧处理，得到焙烧料；(2)将所述焙烧料与水混合进行调浆，加入浓硫酸和抑铝剂，得到混合物料；(3)对所述混合物料进行加压浸出处理，将加压浸出处理得到的浆料进行固液分离处理，得到富锂溶液。本发明通过加压浸出及抑铝剂的添加，在高效浸出锂的同时，选择性的将铝抑制在浸出渣中，从而极大缓解后续除铝的压力，降低生产成本。
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