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Novel method for preparing vanadium pentoxide

A new technology of vanadium pentoxide, which is applied in the field of preparing vanadium pentoxide, can solve the problems of low vanadium output, inability to meet industrial demand, large foreign exchange, etc., and achieve low energy consumption, good industrial application prospects, market value, and operation simple effect

Inactive Publication Date: 2014-12-24
王晓伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although our country is rich in vanadium resources and reserves, there are still deficiencies and backwardness in smelting and purification technology compared with western developed countries, especially for the low output of high-purity vanadium, which is far from meeting industrial needs and still requires a lot of investment Forex, purchased from developed countries
On the one hand, it needs to spend a lot of foreign exchange. On the other hand, as a metal with an important strategic position, it is so controlled by others, and there are also potential risks and threats

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) At room temperature, dissolve ammonium metavanadate in 10 times the mass of pure water, program the temperature at a rate of 3°C / min until it reaches 80°C, and stir evenly to dissolve completely to obtain a raw material solution;

[0020] (2) Add apatite with a particle size of 100 mesh to the raw material liquid, heat and stir for 10 minutes, then place it at room temperature, and filter under pressure to obtain the filtrate;

[0021] (3) Add ammonium sulfate to the filtrate, continue to stir for 20 minutes to obtain a dark brown precipitate, filter, wash the precipitate with pure water for several times, until there is no variegated color in the washing liquid, then dry to obtain a solid;

[0022] (4) Calcining the solid at a temperature of 600°C to obtain the vanadium pentoxide of the present invention, the purity of which can reach more than 98.4%.

Embodiment 2

[0024] (1) At room temperature, dissolve ammonium metavanadate in 15 times the mass of pure water, program the temperature at a rate of 4°C / min until it reaches 85°C, and stir evenly to dissolve completely to obtain a raw material solution;

[0025] (2) Add apatite with a particle size of 150 mesh to the raw material liquid, heat and stir for 20 minutes, then place it to room temperature, and filter under pressure to obtain the filtrate;

[0026] (3) Add ammonium chloride to the filtrate, continue to stir for 30 minutes to obtain a dark brown precipitate, filter, wash the precipitate with pure water for several times, until there is no variegated color in the washing liquid, then dry to obtain a solid;

[0027] (4) Calcining the solid at a temperature of 700°C to obtain the vanadium pentoxide of the present invention, the purity of which can reach more than 98.8%.

Embodiment 3

[0029] (1) At room temperature, dissolve ammonium metavanadate in 20 times the mass of pure water, program the temperature at a rate of 5°C / min until it reaches 90°C, and stir evenly to dissolve completely to obtain a raw material solution;

[0030] (2) Add apatite with a particle size of 200 mesh to the raw material liquid, heat and stir for 30 minutes, then place it at room temperature, and filter under pressure to obtain the filtrate;

[0031] (3) Add ammonium chloride to the filtrate, continue to stir for 40 minutes to obtain a dark brown precipitate, filter, wash the precipitate with pure water for several times, until there is no variegated color in the washing liquid, then dry to obtain a solid;

[0032] (4) Calcining the solid at a temperature of 800°C to obtain the vanadium pentoxide of the present invention, the purity of which can reach more than 98.6%.

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Abstract

The invention relates to a novel method for preparing vanadium pentoxide. According to the method, a coarse ammonium metavanadate product is adopted as a raw material, and vanadium pentoxide is prepared through multiple steps of treatment. A product prepared by using the novel method is high in purity and few in impurities, has high industrialization production potential and application values, and is worthy of popularization and deep study.

Description

technical field [0001] The invention relates to a novel method for preparing vanadium pentoxide, belonging to the field of inorganic material preparation. Background technique [0002] Vanadium is an important strategic resource metal with a very wide range of applications and uses, such as military, electromagnetic materials, phosphor materials, steel rails, special alloys, specific-purpose catalysts, batteries and other fields. pivotal role. [0003] Although our country is rich in vanadium resources and reserves, there are still deficiencies and backwardness in smelting and purification technology compared with western developed countries, especially for the low output of high-purity vanadium, which is far from meeting industrial needs and still requires a lot of investment Foreign exchange, purchased from developed countries. On the one hand, it needs to spend a lot of foreign exchange. On the other hand, as a metal with an important strategic position, it is so contro...

Claims

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Application Information

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IPC IPC(8): C01G31/02
Inventor 王晓伟
Owner 王晓伟