炼钢厂连铸机的开浇时间决策优化模型

针对炼钢厂连铸机开浇时是否连浇以及开浇时间确定等问题,从钢厂生产线上待加工的铁水/钢水金属资源平衡的角度,建立了以连铸生产总效益最大为目标函数的连铸机开浇决策的混合整数规划模型,并用基于MATLAB软件的YALMIP优化工具进行模型的求解.针对某钢厂的实际情况进行模型的应用测试,结果表明:模型可以优化决策连铸机各浇次的开浇时间,有助于编制合理的炼钢厂生产调度作业计划,稳定各班次之间的生产条件,降低生产线上的积压金属量,为炼钢厂连铸机的有序开浇提供了技术手段.

An Optimization Model for Casting Start Time Decision of Continuous Caster in Steel Plant

From the aspect of the resource balancing of the hot-metal/liquid-steel in a steel plant， a mixed integer linear programming model with the objective of maximizing the total benefit of continuous casters was established for casting start time decision of continuous caster (CSDCC). The model was solved by YALMIP optimizer based on MATLAB. Application tests were conducted with the instances from the practical production process in a steel plant to evaluate the proposed model. The results show that the casting start time of continuous casters can be predicted accurately， which is beneficial to make a feasible schedule， to stabilize the production conditions for the shifting of working groups， and to reduce the quantity of hot-metal/liquid-steel stored in the production line. The CSDCC model provides a useful tool for steel plant to determine the optimized casting start time of continuous caster.