Vanadium-nitrogen alloy, also known as ferrovanadium-nitrogen or FeV-N, is produced by adding vanadium and nitrogen to molten iron. The production process typically involves the following steps:

1. Raw materials preparation: The raw materials required for the production of vanadium-nitrogen alloy include iron, vanadium, and nitrogen. These materials are usually sourced in the form of ferrovanadium, vanadium pentoxide, and nitrogen gas.

2. Charging: The raw materials are charged into a furnace in specific proportions, based on the desired composition of the final alloy.

3. Melting: The furnace is heated to high temperatures, typically between 1,500 and 1,700°C, to melt the raw materials and form a molten alloy.

4. Nitrogen injection: Nitrogen gas is injected into the molten alloy to react with the vanadium and form vanadium-nitrogen alloy.

5. Refining: The molten alloy is refined to remove any impurities or slag, which can negatively affect the quality of the final product.

6. Casting: The molten alloy is cast into ingots or other forms depending on the specific application requirements.

7. Cooling and solidification: The cast alloy is allowed to cool and solidify to form a solid product that can be further processed or used as-is.