2018 - Sustainable Industrial Processing Summit & Exhibition
4-7 November 2018, Rio Othon Palace, Rio De Janeiro, Brazil
| Operating Line of COREX Process Based on Rist Diagram C Srishilan1; Anand Vivek2; Ajay Shukla3; 1IIT MADRAS, CHENNAI, CHENNAI, India; 2JADAVPUR UNIVERSITY, KOLKATA, India; 3IIT MADRAS, CHENNAI, India; PAPER: 369/Iron/Regular (Oral) SCHEDULED: 15:15/Tue./Mar Azul (50/1st) ABSTRACT: An operating line first developed by Rist in 1960's has been modified by various researchers for improvements in the blast furnace [1]. The idea proposed by Rist was utilized for performing the heat balance along with the net oxygen balance for other iron making processes [2]. There is need of a similar operating line based on Rist diagram approach for COREX process, in order to study the operating conditions and predict the operating parameters of the process with respect to the raw material availability and hot metal quality required. In the present work, the calculations of modified operating line of the COREX process based on the Rist diagram approach have been performed. The operating line has been modified thus accounting the generated H<sub>2</sub>O, CO<sub>2</sub> and CH<sub>4</sub> with respect to Fe, in the process of smelting reduction of ore by coal [3]. This modified operating diagram was used to evaluate the metallization rate and fuel composition. This work provides the analysis pathway for controlling the energy utilization in the process. The coordinate of the chemical pitch point and variation of the thermal pitch point on the operating line due to changes in amount of required heat has been studied. References: [1] X. Zhou, Z. Shi, G. Zhang, Y. Ding, and X. Yang, Mater. Res. Innov., (2015) 19, 99-101 [2] A. Rist, Ironmaking Proc., (1966), 88-98 [3] W.L. Zhan, K. Wu, Z.J. He, Q.H. Liu, and X.J. Wu, J. Iron Steel Res. Int., (2015) 22, 1078-1084 |
