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Preparation method of high-purity vanadium pentoxide

A vanadium pentoxide and high-purity technology, which is applied in the metallurgical field, can solve the problem of inability to remove impurities and high-purity vanadium pentoxide at one time, and achieve the effects of high purity and improved purity.

Active Publication Date: 2015-06-10
攀枝花市阳润科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After ion exchange, further impurity removal is required, because the resin adsorbs other impurities while adsorbing vanadium, and it cannot be removed at one time to obtain high-purity vanadium pentoxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] First, the vanadium slag obtained by extracting vanadium from the converter is ground by a ball mill, the particle size is less than 0.1mm, and the particle size is greater than 120 mesh, and is controlled at 90%; the finely ground vanadium-containing raw material is treated with iron removal, and the residual amount of metallic iron is 6%; The vanadium-containing raw material after iron is mixed with industrial sodium carbonate (soda). The amount of sodium carbonate added is controlled at: 1 to 2.5 times the vanadium content, the roasting temperature is controlled at 780 ° C, and the roasting time is controlled at 3 hours. The vanadium-containing raw materials are leached with water, the leaching liquid-solid mass ratio is controlled at 4:1, the leaching temperature is controlled at 85°C, the leaching time is controlled at 25 minutes, and the leaching pH value is controlled at 8; The solution is adjusted to different pH values, so that the metal ions in the solution bec...

Embodiment 2

[0046] First, the vanadium slag obtained by extracting vanadium from the converter is ground by a ball mill, and the particle size is less than 0.1mm, and the particle size is greater than 120 mesh, which is controlled at about 90%; the finely ground vanadium-containing raw materials are subjected to iron removal treatment, and the residual amount of metallic iron is 5% respectively. The vanadium-containing raw materials after iron removal are mixed with industrial sodium carbonate (soda), the amount of sodium carbonate is controlled at 1 to 2.5 times the vanadium content, the roasting temperature is controlled at 780 ° C, and the roasting time is controlled at 3 hours. The roasted vanadium-containing raw materials are leached with water, the leaching liquid-solid mass ratio is controlled at 4:1, the leaching temperature is controlled at 85°C, the leaching time is controlled at 25 minutes, and the leaching pH value is controlled at 8; the vanadium-containing solution is decation...

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Abstract

The invention discloses a preparation method of high-purity vanadium pentoxide. The method comprises the following steps of: a, grinding a vanadium-containing raw material, and removing iron; b, performing sodium roasting on the raw material treated in the step a, and leaching to obtain the vanadium-containing solution; c, removing cation impurities and anion impurities from the vanadium-containing solution obtained in the step b, and filtering to obtain the purified vanadium-containing solution; d, adding ammonium sulfate into the purified vanadium-containing solution to perform molybdenum precipitation treatment, filtering, washing and removing impurities to obtain vanadate precipitate; and e, pulping and filtering the vanadate precipitate, washing, further removing impurities in the vanadate precipitate, drying and roasting to obtain a vanadium pentoxide product. By virtue of the strict and effective impurity removal treatment, the purity of the vanadium pentoxide product can be increased, and can be over 99 percent.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a preparation method of high-purity vanadium pentoxide. Background technique [0002] High-purity vanadium oxide has high added value and can be used in metallurgy, chemical industry, medicine, energy, environmental protection, aerospace and other industries. According to statistics, in 2007, the domestic demand for high-purity vanadium oxide products was about 3,500 tons, and the demand for vanadium pentoxide used in the production of vanadium aluminum alloys reached about 1,600 tons. With the development of new industries, it is expected that the domestic demand for high-purity vanadium oxide will further increase. For example: domestic large aircraft projects and vanadium battery projects require high-purity vanadium oxide. Therefore, domestic demand for high-purity vanadium oxide will further increase. Abroad, the regions that have a large demand for high-purity vanad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/44C22B34/22
CPCY02P10/20
Inventor 李亮
Owner 攀枝花市阳润科技有限公司
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