A method for removing impurities from sodium-containing vanadium leaching solution

By adjusting the pH value and temperature of the sodium-based vanadium-containing leaching liquid and adding specific ions, the problem of poor impurity removal effect of the sodium-based vanadium-based leaching liquid is solved, and the effect of efficient impurity removal, improving vanadium recovery rate and reducing production costs is achieved.

CN119753322APending Publication Date: 2025-04-04PANGANG GROUP VANADIUM & TITANIUM RESOURCES CO LTD
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Patent Information

Application Number
CN202510065616.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-15
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

In the prior art, the sodium-containing vanadium-containing leaching liquid has poor impurity removal effect, resulting in low vanadium recovery rate, high impurity removal cost, long process flow and large environmental pollution.

Method used

By lowering the pH of the sodium-containing vanadium-containing leaching solution to 8.5~9.5, the control temperature is 60~70℃, the ammonium metavanadate supernatant, magnesium salt and aluminum salt are added to react and settle, and finally solid-liquid separation is carried out to remove impurities.

Benefits of technology

It realizes efficient removal of phosphorus and silicon from sodium-containing vanadium-containing leaching liquid, improves vanadium recovery rate, reduces production costs, simplifies process flow, and reduces environmental pollution.

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Abstract

The invention relates to the field of metallurgical chemical technology, and proposes a method for removing impurities from a sodium-containing vanadium leaching solution. The method comprises: lowering the pH value of the sodium-containing vanadium leaching solution to between 8.5 and 9.5; controlling the temperature of the sodium-containing vanadium leaching solution after the pH value is lowered to 60 to 70°C, controlling the mass of the corresponding ammonium metavanadate supernatant, magnesium salt and aluminum salt to be added according to the vanadium content, phosphorus content and silicon content thereof, and reacting in sequence; and separating the solid and liquid after the solution obtained by the reaction is allowed to settle to remove impurities. The scheme of the invention has a good impurity removal effect, can be used to prepare ammonium polyvanadate and ammonium metavanadate, will not introduce Cl and organic pollution in the entire impurity removal process, has simple equipment, low process requirements, is highly compatible with industrial production, and reduces production costs.
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Citation Information

Cited By

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