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Method for extracting vanadium from vanadium-containing high-concentration hydrochloric acid solution

A hydrochloric acid solution, high-concentration technology, applied in the field of vanadium extraction, can solve problems such as no patents or literature reports, and achieve the effects of recycling, mild reaction conditions, and large separation coefficient

Active Publication Date: 2016-03-02
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no patents or literature reports on the use of amine extractants and neutral extractants to selectively extract vanadium in high-concentration hydrochloric acid solutions in the existing patent literature on the extraction of vanadium

Method used

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  • Method for extracting vanadium from vanadium-containing high-concentration hydrochloric acid solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The volume ratio of the vanadic acid immersion solution containing the concentration of hydrochloric acid 2.5mol / L and the composite organic extractant (amine extractant (trioctylmethylammonium chloride) and neutral extractant (tributyl phosphate)) is 1: 1) Mixing for extraction, the volume ratio of the composite organic extractant to the vanadium-containing high-concentration hydrochloric acid solution is 3:1, use 260# solvent oil as the diluent, the concentration of the composite organic extractant is 10%, the extraction time is 15min, and the extraction temperature The temperature is 15°C, and the phases are separated after standing; the vanadium-loaded organic phase is mixed with the stripping agent 1.0mol / L hydrochloric acid solution for stripping, the volume ratio of the vanadium-loaded organic phase to the stripping agent is 10:1, and the stripping time is 30min, the stripping temperature is 15°C, after standing still, the phases are separated to obtain the upper ...

Embodiment 2

[0030] The volume ratio of the vanadium-containing acid immersion solution with a hydrochloric acid concentration of 4.5mol / L and the composite organic extractant (amine extractant (trioctylmethylammonium chloride) and neutral extractant (trioctylphosphine oxide)) is 1 :8) mixing and extracting, the volume ratio of the composite organic extractant to the vanadium-containing high-concentration hydrochloric acid solution is 1:10, using sulfonated kerosene as a diluent, the concentration of the composite organic extractant is 70%, and the extraction time is 0.1min. The temperature is 65°C, and the phases are separated after standing; the vanadium-loaded organic phase is mixed with the stripping agent 1.0mol / L sulfuric acid solution for stripping, the volume ratio of the vanadium-loaded organic phase to the stripping agent is 1:5, and the stripping time The extraction temperature is 0.2min, the stripping temperature is 65°C, and the upper organic phase and the stripping liquid are ...

Embodiment 3

[0032] The vanadium-containing acid immersion solution with a hydrochloric acid concentration of 2.5mol / L was mixed with a compound organic extractant (amine extractant (trioctylmethylammonium chloride) and neutral extractant (trioctylphosphine oxide and tributyl phosphate) 1:1 mixed) with a volume ratio of 3:7) for extraction, the volume ratio of the composite organic extractant to the vanadium-containing high-concentration hydrochloric acid solution is 2:1, using sulfonated kerosene as a diluent, and the concentration of the composite organic extractant is 50%, the extraction time is 15min, the extraction temperature is 30°C, and the phases are separated after standing; The ratio is 1:1, the stripping time is 10min, and the stripping temperature is 20°C. After standing still, the phases are separated to obtain the upper organic phase and the stripping liquid; After calcining at a temperature of 500°C for 4 hours, the product of vanadium pentoxide is obtained. The upper orga...

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Abstract

The invention belongs to the field of hydrometallurgy and particularly relates to a method for extracting vanadium from a vanadium-containing high-concentration hydrochloric acid solution. The method mainly includes the steps of extraction, reverse extraction, strip liquor sedimentation and calcination, and the like, that is, an amine extraction agent and a neutral extraction agent are utilized for selectively extracting vanadium in the vanadium-containing high-concentration hydrochloric acid solution instead of impurities such as calcium, aluminum, magnesium, chromium, titanium, manganese and silicon in the solution; an organic phase loaded with vanadium is subjected to reverse extraction with a sulfuric acid solution or the hydrochloric acid solution or a sodium chloride solution or an ammonia water solution or water, and the organic phase subjected to reverse extraction can be returned to the extraction procedure for use; and a vanadium pentoxide product can be obtained by conducting edimentation and calcination on strip liquor. By means of the method, vanadium can be extracted from the solution with the hydrochloric acid concentration larger than 2.5 mol / L, the coefficient of separation of vanadium from the impurities such as calcium, aluminum, magnesium, chromium, titanium, manganese and silicon is large, the technological process is simple, and the extraction agents can be recycled.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy, and particularly relates to a method for extracting vanadium from a vanadium-containing high-concentration hydrochloric acid solution. Background technique [0002] Vanadium is an important transition metal, which is widely used in alloys, catalysts, batteries, advanced materials and other fields due to its excellent properties. Vanadium-titanium magnetite is the main source of vanadium. With the advancement of anti-corrosion technology, hydrochloric acid leaching of vanadium-titanium magnetite has attracted more and more attention because of its high reactivity, high efficiency, low energy consumption, and hydrochloric acid can be recycled. How to separate and utilize vanadium from the leaching solution of vanadium-titanium magnetite leached by hydrochloric acid is of great significance. The chemical precipitation method is mainly to control the conditions to cause selective precipitation of vana...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/40C22B34/22
CPCY02P10/20
Inventor 张国之齐涛陈德胜赵宏欣王丽娜
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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