On thermodynamics of iron reduction from oxides

Abstract

A computer simulation of the chemical process of direct iron reduction in aggregates was performed with the use of MIDREX technology. The analysis of four variants of this technology, which differ in the type of raw material and temperature of the working process, was carried out. It was determined that when the process temperature increased, the required consumption of natural gas decreased, and methane in the waste gas was completely eliminated. It was also noted that at a constant process temperature, the concentrations of all components of the system were linearly dependent on flow rate of the reducing gas. This circumstance allowed us to write a single balance equation for all variants of the studied chemical process.