A method for preparing vanadium-iron alloy by magnesium-aluminum composite thermal reduction of vanadium oxide

Abstract

The invention relates to a method for preparing vanadium-iron alloy by magnesium-aluminum composite thermal reduction of vanadium oxide, comprising the following steps: putting V2O5 or V2O3 into a pre-reduction device, then feeding H2 into the pre-reduction device, using H2 to convert V2O5 or V2O3 VO is obtained by reduction, and at the same time, iron filings are added to the pre-reduction equipment during the reduction period, and the iron filings are reduced to iron simple substance under the action of H2; the VO obtained by pre-reduction is mixed with magnesium-aluminum composite reducing agent and lime, and then placed in a reducing atmosphere In the process, the reduction roasting is carried out at a certain temperature, and the reaction is complete; the reaction of VO and the magnesium-aluminum composite reducing agent is completed, and the slag and gold are separated to obtain the vanadium-iron alloy. Through this process, the amount of metal reducing agent is significantly reduced, and the magnesium-aluminum composite thermal reduction process is used to improve the driving force of the chemical reaction and ensure the sufficient supply of heat in the reduction process. The addition of magnesium-aluminum composite reducing agent further reduces the melting point and viscosity of slag , making the separation of slag and gold easier, thereby reducing vanadium loss.

Description

technical field [0001] The invention relates to the technical field of vanadium-iron alloy preparation, in particular to a method for preparing vanadium-iron alloy by thermally reducing vanadium oxide with magnesium-aluminum composite. Background technique [0002] my country is the second largest owner of vanadium resources in the world, and its reserves are V 2 o 5 A total of more than 20 million tons, second only to South Africa, the amount of vanadium used is less, but the price of vanadium and vanadium Taiwan metal is relatively expensive, and vanadium has a significant effect on improving the performance of steel, so it has a greater value for popularization and application. Now , vanadium has become an alloying element commonly used in the development of new steel grades. Since the discovery of vanadium, its most important application is in the form of ferrovanadium as an important steelmaking alloy additive. It is used in the field of iron and steel metallurgy, esp...

AI Technical Summary

Problems solved by technology

[0004] For the above-mentioned problems existing in the prior art, the first technical problem to be solved in the present invention is: need to consume a large amount of metal aluminum and need to consume a large amount of lime;

Images