Life Cycle Cost Minimization for Cement Production under Various Constraints

摘要

The world consumption of cement is rising at an increasing rate,resulting insignificant levels of pollution.Therefore,cement production is considered one ofthe major contributors to environmental pollution,requiring implementation ofmore efficient sustainability practices.The main driving forces for sustainabilitypractices are environmental,material and energy constraints,which limit theoperation of a particular plant in certain geographic areas.Such constraints forcethe cement companies to make investments in the development of emissionreduction technologies.Production of 1,000kg of cement requires 1,500-1,700kginput of raw material.The rest of the material is considered by-product,whichgoes to the atmosphere in the form of emissions.These emissions varydepending on the plant type and the country.In this research the economic-mathematical model of cement production is developed,which minimizes the LifeCycle Cost(LCC)of the cement plant,while satisfying the forecasted demandand various constraints.The economic-mathematical model,developed in thisresearch,is useful for existing cement plants and for those that will be built in thefuture.The model computes the optimal amounts of cement production that willprovide minimum LCC during the projected period.The main decision variablesrepresent the optimal production of cement by each producing unit within theplant.