Redesign of secondary magnesium metallurgy in the complex Mg Serbien

Abstract

In the current study it has been concluded that production of magnesium is only feasible by principles of closing the production cycle through optimization and synergy between primary and secondary magnesium production in order to generate as least as possible waste, emission and pollution in the Pidgeon process. The time of return of investment in redesign of secondary magnesium metallurgy was concluded to be 3.11 years which is the shortest time for this kind of projects. The parameters as the individual discount rate 11.50%, internal rate of return, period of return 19%, positive net present value and profitability index 1.98 are acceptable. The unit capital cost per unit of $ 5,267/t and unit OPEX of $ 1,395/t were indicative of the economic success of this project and the most appropriate parameters have been achieved. Also, using gas as a fuel instead of coal will reduce OPEX for 8.4%. With this model waste substances are converted into highly profitable resources along with the promotion of sustainability and a cleaner production strategy, which is the ultimate goal for company and society.