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Method for recovering vanadium pentoxide from molten iron containing vanadium

A vanadium pentoxide and vanadium oxidation technology, applied in the direction of vanadium oxide, etc., can solve the problems of low vanadium recovery rate and low concentration of vanadium pentoxide, so as to improve steelmaking process and production organization, increase recovery rate, and reduce metal The effect of iron loss

Inactive Publication Date: 2010-02-17
PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When vanadium is extracted from molten iron according to the existing converter vanadium extraction process, the concentration of vanadium pentoxide in vanadium slag is low, and the recovery rate of vanadium is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment is used to illustrate the method for recovering vanadium pentoxide from high-silicon iron water provided by the present invention.

[0031] The vanadium-containing molten iron smelted in the blast furnace is desulfurized and desulphurized to obtain vanadium-containing desulfurized molten iron. Vanadium is extracted and blown in 4 furnaces in a 120-ton converter. The average amount of molten iron in the 4 furnaces is 140 tons / furnace.

[0032] According to YB / T5125-2006 (this standard is the black metallurgy industry standard of the People's Republic of China), the main components of the 4 furnaces containing vanadium desulfurization molten iron are sampled and determined: C (4.51-4.94% by weight), with an average content of 4.88% by weight, V ( 0.287-0.294% by weight), the average content is 0.289% by weight, Si (0.213-0.232% by weight), the average content is 0.23% by weight, and the balance is mainly Fe.

[0033] Oxygen is blown into the converter thro...

Embodiment 2

[0036] This embodiment is used to illustrate the method for recovering vanadium pentoxide from high-silicon iron water provided by the present invention.

[0037] The vanadium-containing molten iron smelted in the blast furnace is desulfurized and desulphurized to obtain vanadium-containing desulfurized molten iron. Vanadium is extracted and blown in 3 furnaces in a 120-ton converter. The average amount of molten iron in the 3 furnaces is 142 tons / furnace.

[0038] According to the national standard YB / T5125-2006, the main components of the three vanadium-containing desulfurized hot metals are: C (4.68-4.88% by weight), with an average content of 4.75% by weight, V (0.275-0.29% by weight), with an average content of 0.285% by weight. % by weight, Si (0.15-0.234% by weight), the average content is 0.189% by weight, and the balance is mainly Fe.

[0039] Oxygen is blown into the converter through the top and bottom of the converter simultaneously through the oxygen lance (oxygen...

Embodiment 3

[0041] This embodiment is used to illustrate the method for recovering vanadium pentoxide from high-silicon iron water provided by the present invention.

[0042] The vanadium-containing molten iron smelted in the blast furnace is desulfurized and slag-removed to obtain vanadium-containing desulfurized hot metal. Vanadium is extracted and blown in 3 furnaces in a 120-ton converter. The average amount of molten iron in the 3 furnaces is 141 tons / furnace. According to YB / T5125-2006 sampling determination, the main components of the 3 furnaces containing vanadium desulfurization molten iron are: C (4.40-4.74% by weight), with an average content of 4.55% by weight, V (0.299-0.302% by weight), with an average content of 0.301% by weight %, Si (0.134-0.274% by weight), the average content is 0.193% by weight, and the balance is mainly Fe.

[0043] Oxygen is blown into the converter through the top and bottom of the converter simultaneously through the oxygen lance (oxygen pressure i...

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Abstract

The invention relates to a method for recovering vanadium pentoxide from molten iron containing vanadium. The method comprises the steps of oxidizing the vanadium in the molten iron into the vanadiumpentoxide, and separating vanadium slag; and the method also comprises the step of contacting the molten iron with a carbon material containing simple substance carbon after oxidizing the vanadium inthe molten iron into the vanadium pentoxide and before separating the vanadium slag. The method can significantly improve the concentration of the vanadium pentoxide in the vanadium slag and the recovery rate of the vanadium pentoxide.

Description

technical field [0001] The invention relates to a method for recovering vanadium pentoxide from molten iron containing vanadium. Background technique [0002] In my country, some iron and steel plants use vanadium-titanium magnetite for smelting. In order to ensure the effective utilization of resources, vanadium extraction process is required before steelmaking. The vanadium in molten iron is oxidized into vanadium pentoxide by blowing oxygen. The vanadium-containing molten iron is passed through Semi-steel is obtained after vanadium extraction treatment and separation of vanadium slag. [0003] When vanadium is extracted from molten iron according to the existing converter vanadium extraction process, the concentration of vanadium pentoxide in the vanadium slag is low, and the recovery rate of vanadium is low. For example, according to the method of Comparative Example 1, when the content of elemental silicon in molten iron is 0.23% by weight and the content of elemental v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/02
Inventor 卓钧谭成英袁宏伟李清春解明科叶翔飞王二军
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES