"converter slag for recycling" refers to the slag generated during the converter steelmaking process after the hot metal and scrap steel undergo blowing processes for decarburization, dephosphorization, and desulfurization. This slag contains certain amounts of iron, calcium, magnesium, silicon, and other elements. After losing its original metallurgical utility or being discarded, this converter slag can be collected and processed through crushing, magnetic separation, and grading. It can then be recycled as an iron-bearing resource and further reused as sinter return fines, raw material for construction materials, or highway engineering materials in recycling applications.