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Sponge Iron is iron ore reduced directly in solid state using coal gas, natural gas or coal as reductants and is also known as Directly Reduced Iron(DRI). The need for development and commercialization of sponge iron manufacturing process arose in late 50's when Electric Arc Furnaces (EAFs) engaged in manufacturing steel started facing problems of availability of scrap of desired quality, the traditional source of their iron metallics. The DRI process soon become popular and since the inception of first DRI plant in 1957 in Mexico, there has been continuous growth of this industry in last three decades. This is evident from the steep rise in world DRI production during the past three decades.
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