Optimization of Waste Mixing in Co-processing: A Case Study in the Cement Industry

The high energy demand of a cement plant is a widely known aspect. To meet part of this need, sustainable techniques have been adopted, among which co-processing stands out. Co-processing stands out for the use of various types of waste, whether of domestic or industrial origin, as fuel for clinker kilns. However, due to the different chemical properties of these residues, an inadequate mixture before firing can compromise the final quality of the cements. This work presents the application of a mathematical model developed to optimize the quality of the waste mixture in the co-processing sector of a cement plant, as well as the results after the monitoring period. The analysis of the results proves the impact of the application of operational research and quality tools on the improvement of industrial processes. The project achieved greater stability and control in the process after implementing the optimization of the waste composition in the clinker furnace.