Improvement of reduction on the basis of the ARM Tekhnologa model

A model of direct iron production by pellet reduction in a shaft furnace has been developed. This model includes the material and energy balances of all the main components of the reduction system (shaft furnace, reformer, etc.) and is based on ARM Tekhnologa software for the analysis and optimization of the reduction conditions at OAO OEMK. The calculation results may be used in the reconstruction of the reduction system and implemented in practice. To predict the reduction conditions and control the direct production of iron, a determinate model of the heat and mass transfer and gas dynamics in the bed is added to ARM Tekhnologa software. This supplementary model simulates the reduction dynamics of a pellet in the shaft furnace and expands the scope for calculating new reduction conditions, so as to boost product output and quality.