انتخاب مناسب ترين فناوري آهن سازي بر اساس الگوهاي تصميم گيري هاي چندمعياره و منطق شلال

The appropriate Iron making Technology Selection using Multi attribute decision making and Fuzzy Logic

Iron making technologies are categorized in direct reduction methods with natural gas, integrated method with coke and smelting reduction with coal. The methods base on natural gas cause its rich gas reserves are appropriate alternative iron making for Iran, nonetheless there are some limitations such as catalyst used in a natural gas reformer and iron ore grade and purities. During design of iron making plants, technologies are to be chosen as these minimize raw material and energy consumption, pollutants emission, capital expenditure and dependence on other countries and also maximize quality and quantity of productions. In this paper the appropriate iron making technologies are chosen using multiple attribute decision making (MADM) and fuzzy logic patterns across Midrex, Qhaem, HYL III, HYL ZR, Corex, HIsmelt and Blast Furnace meth- •3 g ods for Iran. The both patterns have indicated that the Midrex technology is preferred against other thechnolo-an-