Abstract: In order to reduce converter alloy cost, the converter alloy model was developed using linear programming as the core algorithm. The model through designing carbon redundancy and phosphorus redundancy, determining main parameter such as alloy yield and carbon increment of LF treating process and allocating alloy amount of converter based on preferentially using lower price alloy. The cost of alloy was reduced under the premise of meeting with qualified component of liquid steel, and the economic benefits was 3.27 yuan/t.

Key words: converter, linear program, alloy model, alloy yield