What is the difference between direct reduction and ... What is the difference between direct reduction and indirect reduction process of iron ore? ...

The blast furnace is still the dominant form of iron production, but over the years, direct reduction methods have increased due to a number of reasons. Overall, iron production methods have optimal requirements with respect to the feed materials especially iron ore.

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Iron ore . Summary Update. To December 2000, world steel production was a record 843 million tonnes (up 7 per cent on previous year). China produced 126mtpa, Japan 106 mpta and the USA 101mtpa. About 40 per cent of steel is from scrap. US prices for scrap are 20 per tonne lower than in Asia.

The Midrex Direct Reduction process is based upon a low pressure, moving bed shaft furnace where the reducing gas or syngas moves countercurrent to the lumpiron oxide ore or iron oxide pellet solids in the bed.

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Based on SEM images shown in Fig. 13 of different reduced briquettes, the ore reduction process is proposed to occur in three steps. Initially, metallic iron particles are produced from magnetite and ilmenite. Secondly, iron oxide reduction and metallic iron accumulation take place.

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Iron ores and direct reduced iron Determination of size distribution by sieving ISO 4701:2017 specifies the methods to be employed for determination of size distributions by sieving of iron ore and direct reduced iron (excluding briquetted iron), utilizing sieves having aperture sizes of 36 µm or larger.

Mar 03, 2008 · Direct reduction of iron (DRI) – 'Sponge iron', another method of producing iron: All steelmaking processes require the input of iron bearing materials as process feedstock.

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For fine ore using DRI producers, the lower price of fines containing the same amount of iron represents an important potential raw material advantage for any iron ore producer capable of using those fines (of course if not incurring the cost for its pelletisation).