Council of Scientific and Industrial Research

Siddharth Kumar Pradhan

Barada Kanta Mishra

Priyanka Rajput

Snigdha Priyadarshini

Raja Kishore Paramguru

Partha Sarathi Mukherjee

Subir Kumar Das

Bhagyadhar Bhoi

Sambita Sahoo

Direct reduced iron (DRI) is obtained from iron ore by reduction using microwave assisted low temperature hydrogen plasma. The process includes steps of: (a) loading iron ore onto a sample holder (b) placing the sample holder inside a chamber followed by evacuating the chamber; (c) introducing hydrogen gas in the chamber at flow rate ranging between 100-500 standard cubic centimeters (sccm) followed by heating the sample holder and the iron ore at a temperature ranging between 300-800&#xb0; C., a pressure ranging between 20-100 torr and a microwave power ranging between 500-1500 W to obtain direct reduced iron; and (d) cooling the direct reduced iron obtained in step (c) by flowing hydrogen at flow rate of about 300 sccm.

Green process for the preparation of direct reduced iron (DRI)

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Orissa, India

Siddharth Kumar Pradhan