Single vanadium extraction and steelmaking method by converter

The invention discloses a single vanadium extraction and steelmaking method by a converter. The method comprises the following steps: carrying out KR stirring and desulfurizing on vanadium-containing molten iron to ensure that the sulfur content is reduced to 0.001-0.060%; then, fishing out over 97% of desulfurized slag in the vanadium-containing molten iron; blending the fished vanadium-containing molten iron into the converter filled with liquid vanadium-containing slag; adding vanadium-containing solid wastes for pure oxygen blowing to extract vanadium and make steel; in the blowing process, adding a proper amounts of lime, calcined dolomite and a compound slag former to form slag; then, adjusting the tilting angle of the converter; and pouring out the vanadium-containing slag from a fire door, wherein the vanadium-containing slag is used for extracting vanadium while semisteel left in the converter is continuously blown to prepare initially blown molten steel. The method disclosed by the invention realizes enrichment and cyclic utilization of vanadium resources by fully utilizing the beneficial element vanadium in the liquid vanadium-containing slag and the vanadium-containing solid wastes, thereby forming an efficient path for recycling slag and solid wastes generated by steelmaking of vanadium-containing molten iron. No special coolers are additionally added, so that the resources of the solid wastes are fully utilized and the economic benefit is good.