Method for enriching trace elements in carbonate-type salt lake brine

CN122102250APending Publication Date: 2026-05-29TIBET ZHONGXIN INVESTMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIBET ZHONGXIN INVESTMENT CO LTD
Filing Date
2024-11-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies are insufficient for efficiently enriching rubidium and cesium resources in carbonate-type salt lake brines. Furthermore, existing methods suffer from low yields, significant entrainment losses, and an inability to effectively separate coexisting potassium, rubidium, and cesium ions, leading to resource waste.

Method used

By subjecting carbonate-type salt lake brine to two natural evaporation and two freezing treatments, and combining the climatic characteristics of the salt lake area, a method combining thermal and cold energy is used to control the enrichment process of trace elements, thereby achieving efficient separation and enrichment of rubidium and cesium.

Benefits of technology

The yield of rubidium and cesium was improved, a new and efficient process for evaporating salt lake brine was established, high-quality raw materials for the extraction and separation of rubidium and cesium were provided, the entrainment loss of trace elements was reduced, and the resource utilization rate was improved.

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Abstract

The application discloses a method for enriching trace elements in carbonate type salt lake brine. The enrichment method comprises the following steps: performing first natural evaporation treatment on the carbonate type salt lake brine to obtain a first liquid phase product and a first solid product; performing first freezing treatment on the first liquid phase product at a first low temperature to obtain a second liquid phase product and a second solid product; performing second freezing treatment on the second liquid phase product at a second low temperature to obtain a third liquid phase product and a third solid product; and performing second natural evaporation treatment on the third liquid phase product to obtain a fourth liquid phase product and a fifth solid product, so that rubidium and cesium are enriched in the fourth liquid phase product. The enrichment method provided by the application improves the yield of rubidium and cesium, establishes a new evaporation process of the salt lake brine with the characteristics of 'considering potassium, rubidium and cesium', and provides high-quality raw materials for the following extraction and separation process of rubidium and cesium.
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