This invention discloses a method for
smelting alloy steel, comprising: selecting
scrap steel that meets the addition conditions as additive, wherein the types of elements included in the
scrap steel are within the range of types of elements included in the
molten steel; determining the maximum amount of additive to be added based on the total amount of
molten steel; adding a set amount of additive to the
molten steel, wherein the set amount is less than or equal to the maximum amount to be added; determining the
temperature drop of the molten steel based on the set amount and the total amount of molten steel, and performing temperature compensation on the molten steel; detecting the content of each element in the molten steel, and performing compensation treatment on the molten steel based on the detection results. This method avoids the waste of
alloy resources, effectively recovers and utilizes high-value
alloy elements in
scrap steel, and significantly reduces alloy costs. Furthermore, it reduces production
capacity loss, as scrap steel is directly melted into molten steel, increasing steel production and improving single-furnace capacity and
continuous casting efficiency. It avoids the additional costs and environmental burden caused by scrap steel stockpiling, transportation, and treatment as ordinary scrap steel.