▎ 摘　　要

NOVELTY - Preparation of vanadium-nitrogen alloy involves (a) putting vanadium-containing oxide or vanadium salt into crusher, (b) stirring and mixing the crushed vanadium-containing oxide or vanadium salt, carbonaceous reducing agent, nitrogen increasing agent, iron powder, and stearic acid, (c) ball milling at the same time of ultrasonic treating, (d) mixing with adhesive, pressing by roller ball press into elliptical sphere to obtain ball blank, (e) putting the ball blank in the container for preheating at 500-700 degrees Celsius for 2-3 hours, (f) raising temperature to 800-1000 degrees Celsius, performing carbonization reaction for 4-6 hours, (g) after carbonization reaction, introducing nitrogen into the container, raising the temperature to 1100-1200 degrees Celsius, performing nitriding reaction for 4-6 hours, and (h) cooling the ball blank after the nitriding reaction along with the furnace, and then taking out to obtain the vanadium-nitrogen alloy. USE - Preparation method of vanadium-nitrogen alloy used in steel. ADVANTAGE - The method is convenient to use, reduces the vanadium-nitrogen alloy consumption of vanadium when manufacturing, reduce the cost, and solves the problem that the existing vanadium nitrogen alloy is generally low in production efficiency, high production cost, product vanadium, and nitrogen content fluctuation is large. DETAILED DESCRIPTION - The preparation method involves (a) putting vanadium-containing oxide or vanadium salt into crusher, (b) stirring and mixing the crushed vanadium-containing oxide or vanadium salt, carbonaceous reducing agent, nitrogen increasing agent, iron powder, and stearic acid, (c) ball milling at the same time of ultrasonic treating, ball milling the raw material particles until the grain diameter is 120-180 meshes, (d) mixing with adhesive, pressing by roller ball press into elliptical sphere to obtain ball blank, (e) putting the ball blank in the container for preheating at 500-700 degrees Celsius for 2-3 hours, (f) raising temperature to 800-1000 degrees Celsius, performing carbonization reaction for 4-6 hours, (g) after carbonization reaction, introducing nitrogen into the container, raising the temperature to 1100-1200 degrees Celsius, performing nitriding reaction for 4-6 hours, and (h) cooling the ball blank after the nitriding reaction along with the furnace, and then taking out to obtain the vanadium-nitrogen alloy. The raw material comprises 60-70 % vanadium oxide or vanadium salt, 5-10 % carbonaceous reducing agent, 3-5 % binder, 2-5 % nitrogen increasing agent, 10-30 % iron powder, 0.1-0.5 % stearic acid.