A method for preparing vanadium pentoxide by composite extraction

A technology of vanadium pentoxide and composite extractant, which is applied in the field of metallurgy, can solve the problems of increasing the cost of sewage treatment, increasing the cost of sewage treatment, affecting the purity of products, etc., and achieve the goals of reducing sewage treatment cost, increasing yield, and strong extraction capacity Effect
CN107226484BActive Publication Date: 2019-04-05CHONGQING KOOPPER CHEM IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING KOOPPER CHEM IND
Publication Date
2019-04-05

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Abstract

The present invention relates to a vanadium pentoxide preparation method, and provides a method for preparing vanadium pentoxide through composite extraction. The method comprises: (1) leaching; (2) reducing; (3) extracting, wherein a vanadium-containing material liquid is extracted with a composite extractant prepared from a phosphate organic matter and a modifier to prepare a vanadium-containing supported organic phase; (4) carrying out back extraction, wherein the supported organic phase is subjected to back extraction with sulfuric acid or a vanadium-containing sulfuric acid solution to prepare a vanadium-rich liquid; (5) removing acid, wherein the excess acid in the vanadium-rich liquid is extracted; (6) precipitating vanadium; and (7) calcining. According to the present invention, the vanadium is extracted with the composite extractant having strong extraction ability and strong back extraction ability, such that the vanadium extraction rate and the vanadium purity can be improved so as to improve the yield and the product of the vanadium pentoxide product, and the alkali consumption can be reduced so as to reduce the production cost.
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Description

technical field

[0001] The invention relates to the field of metallurgy, in particular to a method for preparing vanadium pentoxide by extracting and extracting vanadium with a composite extractant. Background technique

[0002] Vanadium (element symbol V) is a silver-white refractory rare metal with a high melting point. The main oxide form includes vanadium pentoxide (V 2 0 5 ), and vanadium pentoxide is widely used in metallurgy, chemical industry and other industries. With the rapid development of my country's modernization, the demand for vanadium pentoxide is also increasing. In nature, vanadium ore resources mainly exist in vanadium-titanium magnetite symbiotic with iron ore and stone coal vanadium ore raw materials symbiotic with carbon. The basic principle of extracting vanadium from vanadium-containing raw materials and then preparing vanadium pentoxide is: through The leaching process allows vanadium to enter the liquid phase from the solid phase (such as stone ...

Claims

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