The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2014
Filed:
Aug. 13, 2012
Bhagyadhar Bhoi, Orissa, IN;
Barada Kanta Mishra, Orissa, IN;
Raja Kishore Paramguru, Orissa, IN;
Siddharth Kumar Pradhan, Orissa, IN;
Partha Sarathi Mukherjee, Orissa, IN;
Sambita Sahoo, Orissa, IN;
Snigdha Priyadarshini, Orissa, IN;
Priyanka Rajput, Orissa, IN;
Subir Kumar Das, Orissa, IN;
Bhagyadhar Bhoi, Orissa, IN;
Barada Kanta Mishra, Orissa, IN;
Raja Kishore Paramguru, Orissa, IN;
Siddharth Kumar Pradhan, Orissa, IN;
Partha Sarathi Mukherjee, Orissa, IN;
Sambita Sahoo, Orissa, IN;
Snigdha Priyadarshini, Orissa, IN;
Priyanka Rajput, Orissa, IN;
Subir Kumar Das, Orissa, IN;
Council of Scientific & Industrial Research, New Delhi, IN;
Abstract
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° 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.