At Zob Ahan Natanz, the raw materials for steelmaking include scrap iron and sponge iron, which enter the complex through the collection of scrap iron from all over the country and the purchase of sponge iron from its producing units, and after storage Sponge iron is transported to the main steelmaking hall for use in special depots and scrap iron processing in the relevant units. The composition of raw materials in the steel production line is charged in the form of sponge iron (DRI) at a ratio of 90% and scrap at a ratio of 10% in melting furnaces.
At Zob Ahan Natanz Iron and Steel Company, after processing and recycling the scrap and removing the impurities, it is transferred to the electric arc furnace for the complete steelmaking process, and then the sponge iron is transferred to the furnace by conveyor machines in a fully automatic manner. After creating the necessary heat by electric arc force and with a temperature of over 1700 degrees, the materials transferred to the furnace, including scrap iron – sponge iron and other ferroalloys, are transformed into molten materials, and then refined and alloyed by adjusting the analysis of molten materials according to the consumption order. are transferred to LF and VOD furnaces, and after that, by transferring to a continuous casting machine, the molten material is converted into steel ingots with dimensions of 125×125 and 150×150 and with a length of 12 meters, and the produced ingots are ready to be sent. It is going to the market.