According to characteristics of production process for steel enterprise, visualized system modeling and model equations are set up by MIND method, which is a kind of energy systems analysis method for enterprises. With the total cost of energy and materials for the target function, the model equations resolution and optimization results show that: reasonable arrangement of the working time and production capacity of equipment, can make the cost to the minimum, because of the difference of the electricity price in different period; At the same time, different cost reduction space also can be got, when the energy recycling and the different performance of recycling equipment are considered.

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