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Optimizing Steel Production at Monthly and Daily Levels in a Mini-Mill (Room Virtual)

In mini-mills, production planning occurs at different frequencies with different types of information. At a monthly level, orders are combined with forecasted demand for capacity and raw materials planning. In addition to forecasting demand passively, the usage of unallocated production capacity is optimized by recommending the sales of products that can be produced most profitably by the mill. At a daily level, orders have been realized and production sequences are optimized to minimize the total changeover cost across production lines. The paper discusses the development of a set of applications to support these planning activities and their implementation in a mill.