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Method of utilizing V5+ to extract and gather vanadium-containing solution

An extraction enrichment and extraction technology, applied in the field of metallurgy, can solve the problems of non-recyclable treatment and use of sewage, insufficient purification in the extraction process, and high environmental protection treatment costs, so as to improve the extraction processing capacity, reduce the number of extraction stages, and have a huge effect.

Active Publication Date: 2017-01-04
陕西福盛钒业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 3.V 4+ Commonly used extractants have a certain adsorption capacity for Fe, so the extraction process is not purified enough, and the product Fe tends to be high;
[0010] 5.V 4+ High extraction acid consumption, high cost of environmental protection treatment, non-recyclable sewage treatment, large amount of extraction and filling tanks, and a lot of metal occupation. At the same time, a large number of chemical dangerous goods are used, and management risks are high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] a Adjustment: Use an acid solution with a pH of 1 to extract a solution containing about 5g / L of vanadium (various valences of V are available), stir constantly, and adjust the pH with an aqueous solution with a mass concentration of 20% sodium carbonate To 1.6, adjust the temperature to 40℃, at this time, some white precipitates or flocs will gradually appear in the solution;

[0054] b Oxidation: Slowly add the oxidant sodium chlorate under stirring to carry out the oxidation reaction. After the reaction solution turns from the initial light green to dark brown, the V is detected 4+ Converted to V 2 O 5 The reaction ends when the concentration is below 0.05g / L, and it is statically aged after fully stirring.

[0055] c Filtration: Filter the reaction material treated in process b with a plate and frame filter press to separate the precipitate or floc from the solution. The liquid is the original extraction solution. Adjust the pH value of the extraction solution to 1.6 and ...

Embodiment 2

[0063] a Adjustment: leaching a solution containing about 10g / L of vanadium with a pH of about 7 with water (various valences of V are available), stirring constantly, and adjusting the pH of the original solution to 1.9 with a sulfuric acid solution of pH=1. Some white precipitates or flocs will gradually appear in the solution; adjust the temperature to 45°C;

[0064] b Oxidation: Slowly add the oxidant potassium chlorate to perform oxidation reaction under stirring, observe the color change of the reaction solution, and finally turn to dark brown, check V 4+ Converted to V 2 O 5 The reaction is terminated when the concentration is below 0.4g / L, and it is statically aged after fully stirring.

[0065] c Filtration: Pass the reaction material treated in process b through a belt filter to separate the precipitate or floc from the solution. The liquid is the extraction stock solution. Adjust the pH value of the extraction stock solution to 1.9 and store it for later use; dry the soli...

Embodiment 3

[0072] a. Adjustment: the 2g / L vanadium-containing solution with a pH of 11 leached with an alkali (various valences of V are available), stirring constantly, and at the same time using a pH=1 nitric acid solution and sodium hydroxide solution The pH is controlled at 2.0. At this time, some white precipitates or flocs will gradually appear in the solution; adjust the temperature to 50°C;

[0073] b Oxidation: Slowly add the oxidizing agent sodium thiosulfate to perform oxidation reaction under stirring, observe the color change of the reaction solution, and finally turn into ocher red or dark brown, check V 4+ Converted to V 2 O 5 The reaction ends when the concentration is below 1g / L, and white precipitates or flocs will be produced in the solution, which will be statically aged after full stirring.

[0074] c Filtration: Pass the reaction material treated in process b through a belt filter to separate the precipitate or floc from the solution. The liquid is the original extraction...

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Abstract

The invention relates to a method of utilizing V5+ to extract and gather a vanadium-containing solution. The method includes: adjusting pH value of vanadium-containing material leaching stoste to below 7 to generate precipitate or floccule; adding an oxidizing agent while stirring for reaction, wherein when a reaction solution gradually becomes crineous, vanadium ions in the reaction solution are oxidized into V5+; filtering the reaction solution, wherein obtained filtrate is extraction stoste; adjusting pH value of the extraction stoste to below 7, adopting an extraction organic phase with a pH value equal to the pH value of the extraction stoste to perform countercurrent extraction on V5+ in the extraction stoste to obtain an organic phase rich in V5+ and extraction residual water, subjecting the organic phase rich in V5+ to reverse extraction through a stripping agent solution to obtain reverse water rich in V5+, and storing the reverse water to obtain the vanadium-containing solution extracted and gathered by utilizing V5+. Valent state of V5+ is utilized to extract, purify and gather the vanadium-containing solution, so that the valent state does not need to be changed repeatedly, and vanadium recovery rate is high.

Description

[0001] 【Technical Field】 [0002] The present invention relates to the field of metallurgy, in particular to a use of V 5+ Method of extracting and enriching vanadium-containing solution. [0003] 【Background technique】 [0004] Vanadium-bearing mineral resources and vanadium-bearing materials have always been the main raw materials for vanadium smelting. Each has mature processing technology and production methods. However, with the continuous changes in market conditions and the continuous improvement of environmental protection requirements, traditional V 4+ The cost of smelting methods of extraction or ion exchange remains high. [0005] This is because the industry has long agreed that V 5+ It is not conducive to extraction due to solubility and other reasons, so few people use it. Traditional V 4+ The extraction process can only be used for V 4+ For extraction, so V 5+ Revert all to V 4+ After extraction, then V 4 + All oxidized to V 5+ The vanadium sinking process can be carried...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/22C22B3/26
CPCC22B34/22C22B3/26Y02P10/20
Inventor 何明主赵德强余富良杨敏何文斌何毅徐东
Owner 陕西福盛钒业科技有限公司
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