Patent ID: 11987867

Abstract:
A method of recycling a waste of an HSS processing process includes a pre-treating step of pre-treating the waste of the HSS processing process, a primary melting step of forming a primary melt by primarily melting at least one of ferro molybdenum, ferro tungsten, and ferro cobalt and the pre-treated waste of the HSS processing process at 1500 to 2500 degrees Celsius (° C.), and a preparing step of preparing the HSS master alloy by ingot casting the primary melt, wherein the pre-treating step includes: a separating step of separating the waste of the HSS processing process according to a composition, and a mixing step of forming a mixture by mixing oxides containing at least one of K2O, CaO, MgO, SiO2, Al2O3, and Fe2O3 and the separated waste of the HSS processing process with each other, the mixture having a melting point of 800 to 1700° C.