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Technology for extracting V2O5 from vanadium-containing molten iron

A technology of V2O5 and molten iron, which is applied in the field of metal smelting, can solve the problems of low vanadium recovery rate, low vanadium pentoxide content, and long time consumption, and achieve the effects of fast processing time, improved efficiency, and reduced operation difficulty

Inactive Publication Date: 2020-04-14
永平县勇泰工业废渣有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: reclaiming vanadium pentoxide from vanadium-containing iron water, the common oxygen blowing oxidation method has the problems of long time consumption, low vanadium recovery rate, and low vanadium pentoxide content in vanadium slag after oxidation , the present invention provides a solution to the above problems to extract V from molten iron containing vanadium 2 o 5 craft

Method used

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Examples

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Embodiment 1

[0019] This embodiment provides a method for extracting V from vanadium-containing iron water. 2 o 5 According to the process, after the high-calcium and low-grade vanadium slag is reduced to extract the silicon-vanadium alloy, the obtained crude iron is used to refine vanadium pentoxide by the method of the present invention. The components of molten iron include: 4.2wt% vanadium (elemental vanadium and vanadium pentoxide), 4.5wt% silicon (elemental silicon and silicon dioxide), 87.2wt% iron, and the rest are impurities. Specific steps are as follows:

[0020] Step 1, the step of blowing oxygen into the molten iron alone: ​​the oxygen supply is 0.05m 3 / ton of molten iron, the oxygen supply time is 10min; the temperature of the smelting furnace is controlled at 1580°C;

[0021] Step 2, the step of adding iron oxide powder while blowing oxygen: the oxygen supply is 0.2m 3 / ton of molten iron, and intermittent oxygen supply. The rate of adding iron oxide powder to molten...

Embodiment 2

[0024] This embodiment provides a method for extracting V from vanadium-containing iron water. 2 o 5 According to the process, after the high-calcium and low-grade vanadium slag is reduced to extract the silicon-vanadium alloy, the obtained crude iron is used to refine vanadium pentoxide by the method of the present invention. The components of molten iron include: 4.8wt% vanadium (elemental vanadium and vanadium pentoxide), 5.0wt% silicon (elemental silicon and silicon dioxide), 85.5wt% iron, and the rest are impurities. Specific steps are as follows:

[0025] Step 1, the step of blowing oxygen into the molten iron alone: ​​the oxygen supply is 0.1m 3 / ton of molten iron, the oxygen supply time is 10min; the temperature of the smelting furnace is controlled at 1580°C;

[0026] Step 2, the step of adding iron oxide powder while blowing oxygen: the oxygen supply is 0.2m 3 / ton of molten iron. The iron oxide powder is added to the molten iron at a rate of 50 kg / min, and a...

Embodiment 3

[0029] This embodiment provides a method for extracting V from vanadium-containing iron water. 2 o 5 According to the process, after the high-calcium and low-grade vanadium slag is reduced to extract the silicon-vanadium alloy, the obtained crude iron is used to refine vanadium pentoxide by the method of the present invention. The components of molten iron include: 4.9wt% vanadium (elemental vanadium and vanadium pentoxide), 4.6wt% silicon (elemental silicon and silicon dioxide), 84.9wt% iron, and the rest are impurities. Specific steps are as follows:

[0030] Step 1, the step of blowing oxygen into the molten iron alone: ​​the oxygen supply is 0.12m 3 / ton of molten iron, the oxygen supply time is 10min; the temperature of the smelting furnace is controlled at 1580°C;

[0031] Step 2, the step of adding iron oxide powder while blowing oxygen: the oxygen supply is 0.1m 3 / ton of molten iron. The iron oxide powder is added to the molten iron at a rate of 50 kg / min, and ...

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Abstract

The invention discloses a technology for extracting V2O5 from vanadium-containing molten iron. The technology comprises the following steps: at first, blowing oxygen into molten iron, then, continuingto add ferric oxide powder under the oxygen blowing condition, and finally, oxidizing vanadium in molten iron into vanadium pentoxide. According to the technology, through improving the adding mannerof ferric oxide powder and the corresponding technological conditions, the molten iron is further prevented from stirring boiling, and the oxidizing vanadium extracting efficiency is improved. With adoption of the technology, vanadium pentoxide is extracted from molten iron, finally, high-vanadium slag containing 20-30% of vanadium pentoxide is obtained, the vanadium recovery rate is as high as 95% or above; the processing time is short, and the production efficiency is high; and moreover, high-purity pig iron can be generated favorably and can be directly used as industrial pig iron or for precision manufacturing.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a method for extracting V from molten iron containing vanadium. 2 o 5 craft. Background technique [0002] Vanadium pentoxide is widely used in metallurgy, chemical industry and other industries, mainly for smelting ferrovanadium. To recover vanadium pentoxide from vanadium-containing molten iron, the method of blowing oxygen to molten iron is often used to oxidize vanadium into slag and further separate from molten iron. However, in the production process, the process of extracting vanadium pentoxide by blowing oxygen to molten iron has the problems of long time consumption, low vanadium recovery rate, low content of vanadium pentoxide in the oxidized vanadium slag, low production efficiency, and increased subsequent separation treatment. difficulty. Contents of the invention [0003] The technical problem to be solved by the present invention is: reclaiming vanadiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00C22B34/22C22B7/00C01G31/02
CPCC01G31/02C21C7/00C21C7/0037C22B7/001C22B34/22Y02P10/20
Inventor 庹开正周泽宇
Owner 永平县勇泰工业废渣有限公司
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