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Application of Direct Reduced Iron in Electric Furnaces

Direct reduced iron is a high-quality raw material for smelting electric furnace steel, and its addition has an impact on the smelting time, energy consumption, steel yield, and residual elements in electric furnace steelmaking. Developing direct reduction of iron is beneficial for achieving energy conservation, emission reduction, green development, and the transformation and upgrading of the steel industry.

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Produce hydrogen-based directly reduced iron (HDRI) in an EAF

Against the background of “carbon peak” and “carbon neutrality” in China, the traditional and long process of using a blast furnace converter in the steel industry is limited by many problems (such as limitations related to resources, energy, and the environment), and the carbon reduction potential of this process is also limited. The electric arc furnace (EAF) steelmaking process has the advantages of a shorter duration, recyclable resources, and low energy consumption, and the amount of carbon emissions of per ton of steel is far lower than that of the aforementioned longer process.

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Four process flow of converter dust removal ash cold solidification pellets

The dust removal ash from the converter is transported by suction and discharge tank trucks to the raw material silo, and the ash is unloaded into the ash silo of the raw material silo system through pneumatic conveying, waiting for batching, humidification, and digestion. The dust removal ash is proportionally discharged to the humidifier by the impeller feeder for humidification, then enters the mixer for mixing, and finally transported to the digestion bin for digestion treatment.

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