Vanadium-nitrogen alloy production method

Abstract

The invention relates to a vanadium-nitrogen alloy production method which belongs to the technical field of metallurgy. The method comprises the steps of: stirring and uniformly mixing vanadium-containing raw material powder, iron powder, carbon powder and bonder for briquetting and forming, sending the mixture and rice husk into a calcining kiln according to a volume ratio of 1: 1 for dry distillation in the absence of oxygen at a temperature of 600-650 DEG C for 6-7h, heating to 1300-1500 DEG C, sending high-purity nitrogen into the calcining kiln from different gas inlets under micro-positive pressure for 2-4h, carrying out carbonization and nitrogenization on the formed material briquette, and cooling and discharging to obtain a vanadium nitride product. According to the method, the discharge problem of the gas generated in the reaction and the penetration problem of the reaction participation gas are solved through changing a reaction environment of the formed material briquette in the calcining kiln, so that the carbonization and the nitrogenization are promoted and the aims of improving the nitrogen content of the vanadium-nitrogen alloy, homogenizing and stabilizing the product quality, shortening the reaction time, improving the output and reducing the production cost are finally achieved.

Description

technical field [0001] The invention relates to a method for producing a vanadium-nitrogen alloy, belonging to the technical field of metallurgy. Background technique [0002] At present, when producing vanadium-containing steel materials, it is usually achieved by adding vanadium-containing alloys. The addition of nitrogen in steel promotes the precipitation of vanadium, enhances the precipitation strengthening effect of vanadium, and significantly improves the strength of steel. Therefore, in order to reduce the amount of vanadium added and improve the strength and toughness of steel, making full use of the cheap and rich element nitrogen can improve the performance of steel and reduce production costs. Under the premise of ensuring the strength of the steel, the vanadium-containing alloy is best added in the form of vanadium-nitrogen alloy. Increasing the nitrogen content in the steel can reduce the amount of vanadium added and achieve the goal of reducing costs. Adding ...

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Problems solved by technology

[0009] The purpose of the present invention is to make up for the deficiencies of the prior art, on the basis of the prior art, to design a vanadium-nitrogen alloy production method, which the present invention solves by changing the reaction environment of the formed material block in the calciner. The discharge of gas and the infiltration of gas participating in the reaction promote the carbonization reaction and nitriding reaction, and finally increase the nitrogen content of the vanadium-nitrogen alloy, and the product quality is uniform and stable.