Method for recycling vanadium from powdery vanadium-containing material

Abstract

The invention relates to a vanadium recycling method, in particular to a method for recycling vanadium from a powdery vanadium-containing material. The method for recycling the vanadium from the powdery vanadium-containing material comprises the following steps: a, adding water in the powdery vanadium-containing material to obtain a vanadium-containing wet material of which the water content is 10-30%; b, pelletizing the vanadium-containing wet material to obtain vanadium-containing material balls of which the diameters are 3-30 mm; and c, adding the vanadium-containing materials in ferrovanadium, and smelting to obtain ferrovanadium products. By the method for recycling the vanadium from the powdery vanadium-containing material, the various vanadium-containing materials are added with water, and then are pelletized, the proportion of the vanadium-containing materials is increased, dust cannot be raised in a smelting process, and loss in a recycling process is reduced. During recycling of the vanadium from the powdery vanadium-containing material, auxiliary materials such as a binder are not required to be added, the recycling range is wide, the cost is low, the method is simple, the recycling rate reaches up to 95% or above, and the economic benefit is remarkable.

Description

technical field [0001] The invention relates to a method for recovering vanadium, in particular to a method for recovering vanadium in powdery vanadium-containing materials. Background technique [0002] The overcapacity of iron and steel has resulted in increasingly fierce competition among related industries. The competition in the vanadium industry is also affected by the steel market. It is urgent to reduce production costs and increase the recovery rate of vanadium. In the production process of vanadium industry, whether it is vanadium oxide or ferrovanadium process, a large number of by-products will be produced, such as reduction production of V 2 o 3 The black materials produced, the dust ash produced during the ferro-vanadium smelting process, the refractory residual alloy attached to the vanadium discus, and the fine powder produced by the processing and crushing of ferro-vanadium, etc. These vanadium-containing materials are valuable in themselves, but as far as ...

AI Technical Summary

Problems solved by technology

In the production process of vanadium industry, whether it is vanadium oxide or ferrovanadium process, a large number of by-products will be produced, such as reduction production of V 2 o 3 The black materials produced, the dust ash produced during the ferro-vanadium smelting process, the refractory residual alloy attached to the vanadium discus, and the fine powder produced by the processing and crushing of ferro-vanadium, etc. These vanadium-containing materials are valuable in themselves, but as far as the current treatment method, the yield is extremely low

[0003] Currently reverting to production V 2 o 3 The black material produced goes directly into the melting furnace. Due to the small particle size and light specific gravity, secondary dust is generated under high temperature conditions, and the yield is less than 80%. The dust generated during the ferrovanadium smelting process can hardly be recycled; The refractory residual alloy is directly returned to the next furnace for smelting; the fine powder produced by ferro-vanadium processing and crushing is recovered by separate smelting, and the processing cost is relatively high; these vanadium-containing materials have a common feature, that is, small particle size and light specific gravity. , a large amount of dust will run away. At present, there is no recovery method for powdery vanadium-containing materials with a higher yield.