Operating Line Prediction of COREX Iron-making Process Using RIST Diagram

Abstract

In the present work, the calculations of the modified operating line for the COREX process, based on the Rist diagram approach, have been performed. The operating line developed by Rist in 1960's has been modified by various researchers for improvements in the blast furnace. The idea proposed by Rist was further utilized to perform the heat balance along with the net oxygen balance for the other iron making processes. The operating line has been modified thus accounting the generated H 2 O and CO 2 with respect to Fe, in the process of smelting reduction of ore by coal containing volatile and moisture.

An Analysis of Pulverized Coal Injection in Blast Furnaces by Rist Diagram / Uma Análise Sobre a Injeção De Carvão Pulverizado Em Altos-Fornos Por Meio Do Diagrama De Rist

“…This diagram can be used to understand changes in the operational parameters caused by process modifications. In addition, the Rist diagram can be used through an interaction with an expert, for operation projection [1]- [3].…”