Sponge Iron
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Description
Sponge Iron is a metallic product formed by the reduction of iron ore at temperature just below the fusion point of iron. This product has derived the name "Sponge Iron" due to its porous nature. It is also called as Direct Reduced Iron (DRI).
Sponge Iron is a substitute of steel scrap for steel making through the secondary route i.e. DR/EF route. This also replaces ferrous scrap as a coolant in LD converter. The value of DRI is measured by comparing its cost and properties with those of scrap. It's non pyrophoric. It's free from tramp elements viz Copper, Zinc, Tin, Chromium, Tungsten and Molybdenum etc that are usually present in scrap. It has low Sulphur content. It has the ability to use low grade fuels and fuels that are unacceptable for conventional iron making. It is more suited for some special metallurgical processes than conventional iron & steel products e.g. Precipitation of copper from leaching solution during copper extraction. Production of metal objects by powder compaction.
Sponge Iron is a substitute of steel scrap for steel making through the secondary route i.e. DR/EF route. This also replaces ferrous scrap as a coolant in LD converter. The value of DRI is measured by comparing its cost and properties with those of scrap. It's non pyrophoric. It's free from tramp elements viz Copper, Zinc, Tin, Chromium, Tungsten and Molybdenum etc that are usually present in scrap. It has low Sulphur content. It has the ability to use low grade fuels and fuels that are unacceptable for conventional iron making. It is more suited for some special metallurgical processes than conventional iron & steel products e.g. Precipitation of copper from leaching solution during copper extraction. Production of metal objects by powder compaction.
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Sponge Iron
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