The invention discloses a
vanadium-
nitrogen additive for
smelting microalloyed steel and a method for preparing same. The
vanadium-
nitrogen additive and the method are characterized in that the
vanadium-
nitrogen additive is uniformly mixed by vanadium-contained
alloy powder, nitrogen increasing agent
powder, and
adhesive, wherein the
mass ratio of the
adhesive is 5-12%, the total
mass ratio of the vanadium-contained
alloy powder and the nitrogen increasing agent powder is 88-95%, and the ratio of V / N is controlled within 0.1-4. The method for preparing the vanadium-nitrogen additive used for
smelting microalloyed steel comprises the following steps: mixing the vanadium-contained
alloy powder and the nitrogen increasing agent powder by the weight percentage, mechanically and uniformly blending the mixed powders, subsequently adding 5-12% of the
adhesive and uniformly mixing the powders again, finally mechanically forming blocks of spherule shapes or other shapes, and preparing the vanadium-nitrogen additive by
drying the blocks. The ratio of V / N of
molten steel can be controlled within 3.0-5.0 by the vanadium-nitrogen additive, the enhancement effect of the vanadium can be sufficiently played by utilizing the cheap nitrogen element, and the amount of the vanadium is reduced obviously.