BLENDING MODELING IN A PROCESS MANUFACTURING - A CASE-STUDY

This paper describes the application of mixed integer programming to a blending problem in a process industry. The application is designed f or the personal computer and is in use in France by a producer of chem ical fertilizers. The paper first briefs the literature on blending pr oblems. It covers then the formulation of the blending problem of the plant, its solution and the successful implementation. Special conside ration is given to the problem of handling the nonlinearity introduced by constraints of the process manufacturing system. Further considera tion is given to the use of opportunity cost in the model.