Vanadium extraction process

By adopting decarbonization, vanadium chloride extraction and hierarchical condensation treatment processes in the vanadium extraction process, the existing vanadium extraction process is solved, and a more efficient and environmentally friendly vanadium recycling effect is achieved.

CN119824249APending Publication Date: 2025-04-15CHINA ENFI ENG CORP +1
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Patent Information

Application Number
CN202510111581.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-23
Publication Date
2025-04-15

AI Technical Summary

Technical Problem

The existing vanadium extraction process has problems such as complex process, high cost and low yield.

Method used

A process including decarbonization treatment, vanadium chloride treatment and staging condensation treatment is adopted. The specific steps include: decarbonizing vanadium-containing stone coal and oxygen-rich air in the boiling furnace to obtain a decarbonized intermediate; then chlorine and air in the boiling furnace to obtain a vanadium-chlorinated extraction treatment to obtain a chlorinated gas; and finally obtaining vanadium-oxychloride through staging condensation treatment.

Benefits of technology

This process reduces the use of chemical reagents, avoids the consumption of large amounts of acids or alkalis, reduces potential pollution to the environment, has a simple process and a higher vanadium recovery rate.

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Abstract

The invention provides a vanadium extraction process. The vanadium extraction process comprises the following steps: S1, carrying out decarburization treatment on vanadium-containing stone coal and oxygen-enriched air in a fluidized bed furnace to obtain a decarburized intermediate; s2, the decarburized intermediate, chlorine and air are subjected to chlorination vanadium extraction treatment in a fluidized bed furnace, and chlorinated gas is obtained; and S3, the chlorinated gas is subjected to fractional condensation treatment, and vanadium oxytrichloride is obtained. The decarburization intermediate, chlorine and air are subjected to chlorination vanadium extraction treatment in a fluidized bed furnace, and vanadium, chlorine and air in the decarburization intermediate react to form chlorinated gas. And performing fractional condensation treatment according to different condensation points of different substances in the chlorinated gas to obtain vanadium oxytrichloride with relatively high purity. According to the vanadium extraction process, the use of chemical reagents is reduced, and particularly, the consumption of a large amount of acid or alkali is avoided, so that the potential pollution to the environment is reduced. Compared with a traditional vanadium extraction process, the vanadium extraction process is simpler, and the vanadium recovery rate is higher.
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