Porous lithium fluoride and a preparation method, device and application thereof

By developing a porous lithium fluoride preparation method, the problems of incomplete reaction and equipment corrosion in the production of lithium hexafluorophosphate have been solved, achieving efficient and environmentally friendly lithium hexafluorophosphate production and improving product quality and production efficiency.

CN119706882BActive Publication Date: 2026-06-02JIUJIANG TINCI ADVANCED MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIUJIANG TINCI ADVANCED MATERIALS CO LTD
Filing Date
2024-10-16
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing lithium hexafluorophosphate production processes, the solid-liquid interface contact area is limited, resulting in insufficient reaction, low conversion rate, severe equipment corrosion, and fluctuations in product quality and yield, making it difficult to achieve efficient production.

Method used

A porous lithium fluoride preparation method was adopted, which involves heat treatment, atomization, and heat shrinkage treatment to control Reynolds number, temperature, and pressure, thereby producing porous lithium fluoride with high specific surface area and high porosity. This improves the mass transfer and mixing efficiency between lithium fluoride and hydrofluoric acid, enabling continuous production.

Benefits of technology

It improves the product quality and production efficiency of lithium hexafluorophosphate, reduces the amount of hydrofluoric acid used, reduces equipment corrosion, improves energy utilization and raw material conversion rate, and simplifies post-processing procedures.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a kind of porous lithium fluoride and its preparation method, device and application, the preparation method of the porous lithium fluoride includes the following steps: 1) heat treatment is carried out to mixed system, to obtain reaction liquid;Wherein, mixed system includes lithium fluoride and hydrofluoric acid solution, in heat treatment, the Reynolds number of mixed system is greater than 5000, temperature is 30-60 DEG C, time is 0.2-5min;2) atomization treatment is carried out to reaction liquid, to obtain atomization system, wherein, the particle size of droplet formed in atomization system is 30-200 μm;3) under the pressure of 0.1-0.5MPa, using inert gas with temperature not less than 200 DEG C, atomization system is carried out 1-20min heat shrinkage treatment, to obtain porous lithium fluoride.The preparation method of the porous lithium fluoride provided by the application can prepare porous lithium fluoride with high specific surface area, high porosity and suitable particle size, and the preparation method is simple in process and high in production efficiency.
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