Using the copper-containing steel scraps as an iron raw material to prepare a molten iron for steel making, dissolving the copper-containing steel scraps gatan there being for preparing a high-grade steel and, thereafter, removed by using the sulfur-containing flux with copper contained in the hot metal and then, by removing the sulfur contained in the hot metal, the copper in the steel scraps may efficiency, also, it is removed without the need for any large-scale equipment.
Is to use a flux mainly composed of Na ₂ S as containing flux the sulfur and subjected to copper removal treatment of the contained in the hot metal, a mechanical stirrer-refining apparatus, or, and preferably carried flux blown by a loading method, and , by using a male to form a carbonaceous material bed therein to prepare a sulfur content in the molten iron is relatively high it is preferred to provide the de-copper treatment.