Study on the Relationship Between Process Reconstruction and Energy Saving of Iron and Steel Manufacturing Process in China

As people pay more and more attention to environmental protection, energy conservation in the whole process of steel manufacturing has become a hot research object. China's steel manufacturing process has a history of energy conservation for more than 40 years. The total energy consumption per ton of steel of large and medium-sized enterprises has dropped from 1.646tce/t to 555.24kgce/t. This paper puts forward a new theory of process reconstruction, which is mainly explained from the following three aspects: analysis-optimization of the set of procedures' functions, coordination-optimization of the set of procedures' relations, and reconstruction-optimization of the set of process' procedures. Then, the paper expounds the relationship between process reconstruction and energy saving from two aspects: interface technology and synergy of material flow and energy flow. After applying the new process reconstruction technology, the energy-saving effect of about 5% was achieved in the steel plant experiment. Finally, the research direction of energy conservation in steel manufacturing process is proposed.