关键词: 铁水调度, 工艺路径不确定, 混合整数模型, 调度策略

Abstract: Owing to the uncertainty of common hot metal process path existed in hot metal production process,the conventional optimization was hard tackle the problem,and the manual-based scheduling method had defects of long redundant waiting time between different machines or utilization affect of bottleneck equipments.For these problems,a mathematical model for Torpedo Car (TPC) pots hot metal scheduling was proposed,and the pots were distinguished between Hot Metal of Special Type (HMST) pots and Hot Metal of Normal Type (HMNT) pots with rules.The allocation machine was determined by using heuristic algorithm in every process for HMST pots,and the start time in each process of HMST pots was determined with linear programming method.The HMNT pots were scheduled by using the heuristic algorithm based on rule of first come first service.The proposed method was applied to the hot metal production in the large iron and steel enterprises.The real-time application showed that the redundant waiting time had been dramatically shortened,and the production efficiency had been improved.

Key words: Hot metal scheduling, process path uncertainty, mixed integer programming, scheduling strategy