The Main and Accessorial Equipment Optimal Schedule for the Steelmaking-Continuous Casting Process

The process of steelmaking-continuous casting is the bottleneck of steelmaking production. How to make a cooperative scheduling between the main and accessorial equipment for the steelmaking-continuous casting process is the major factor for the steelmaking production. This paper studies the complex production process scheduling models of the main and accessorial equipment for the steelmaking-continuous casting process and builds the schedule model based on the main and accessorial equipment for the steelmaking-continuous casting process with separable structure. Then, an effective lagrange relaxation iterative algorithm is proposed to improve the optimal efficiency of the static schedule. Finally, the industrial application is verified based on the background of the actual steelmaking and continuous casting schedule in domestic steelmaking plant. The research will improve the schedule method for the actual steelmaking-continuous casting process, promote the development of the schedule theory with the separable structure characteristics and lay a foundation in the industry application for the schedule theory.