Study of reduction behaviour of iron ore lumps / Изучение свойств кусковой железной руды при восстановлении

DRI or Sponge Iron is a porous solid-state product of direct reduction process, which is produced either in lump or pellet form. DRI is a good substitute for steel scrap for producing steel in EAF, BOF etc, which resulted a rapid growth of the sponge Iron Industry. In view of increasing demand of sponge Iron in the manufacturing of different verities of steel, a good deal of emphasis is being given to promote the study of direct reduction process.
The growth of DRI industry took place in it’s nascent form the later half of the 20th century, until then steel scrap constituted the major part of our import, next to petroleum product. Then Indian government imposed some curtailment measure and search for the alternatives began, and direct reduced iron was resulted as an alternative to the steel scrap, which is produced by the direct reduction of iron ore in the form of lump or pellet. In direct reduction (DRI) process ,there a good flexibility of using different kind of reductants like lower grade non coking coal, char coal, natural gas etc. The fast depletion of high grade cooking coal, reserves restricts the use of coke in conventional blast furnace-oxygen steel making route , in India. <...>