At JSW Steel two Corex C-2000 modules (nominal production capacity of 2,400 tons of hot metal per day) have been in operation since 1999. Up until now, the Corex export gas has been used for the generation of electrical energy in a company-owned power station. With consideration to the continually increasing demand for steel in India, JSW Steel decided to utilize this gas for the production of additional iron. An order was placed for a Corex gas-based MIDREX DR plant, which will be supplied by a cooperation comprising the companies Siemens VAI Metals Technologies GmbH, Austria; Linde AG, Engineering Division, Germany; Midrex Technologies, Inc., U.S.A.; Linde Engineering Pvt. Ltd., India; and Siemens VAI Metals Technologies Pvt. Ltd., India.

     The project scope includes process engineering; the supply of equipment, electrics and automation; supervision of erection, start-up and commissioning; and training services. The DR plant will consist of a 7.15-m-diameter MIDREX? Shaft Furnace with gas-recycling and treatment facilities. It will be equipped with Siemens compressors for gas conveying and recirculation, and Linde gas-treatment equipment for the removal of CO2 from the process gas and for gas heating. The balance-of-plant portion will be provided by JSW Projects Ltd.

 

       The Corex export gas and recirculated top gas from the MIDREX? Shaft Furnace are mixed and compressed, followed by CO2 removal. The gas is then heated to the required process temperature after which it is then used for the direct reduction of iron ore in the MIDREX? Shaft Furnace. A portion of the export gas from the DR plant will be used within the steel works for heating applications and for power generation.