Abstract: To address issues such as high alloy costs, imprecise post-alloying component control, and excessive alloy additions in refining furnace during the alloying process of ladle metallurgy, the converter alloying process at the third steelmaking plant of Zenith Iron and Steel Group Co., Ltd was taken as the research subject. Based on historical smelting data from the converter, material balance and thermal balance calculations were conducted to establish a theoretical tapping volume calculation model. Historical alloy feeding data and batching compositions were analyzed to integrate into an alloying database. Combined with planning algorithms, a steel tapping alloying model was established. Based on actual production data, the alloying hit rates and comprehensive economic benefit indicators under different modes of model-based feeding versus manual feeding were compared and analyzed, and the alloying model was revised to optimize the alloy batching structure. Finally, industrial trials were conducted using 20CrMnTiCQ steel to verify the application effect of the model proposed in this paper. The results show that compared with manual feeding, the amount of alloy added using the model presented in this paper is less, the hit rate of alloying composition is 100%, and the accuracy and stability of composition control are higher. The pressure of adding alloy to the refining furnace is smaller, the average alloy addition amount is reduced by 9.3%, and the average cost per ton of steel is reduced by about 20.1 yuan.