student
The article considers how the parameters of raw materials and the energy tariff structure are translated into the cost and margin of blast furnace processing. Based on simulation modeling, three configurations of the charge and blast mode are compared and the role of coke quality, pulverized coal injection, oxygen enrichment and balancing of by-product gases is analyzed. It is shown that a reduction in the proportion of pellets is justified only with stable sintering of the agglomerate and controlled gas dynamics, the greatest economic effect is achieved by controlled substitution of coke with pulverized coal with a "careful" increase in feed and restrictions on tuyeres. Coordination of the operation of air blowers, air heaters and utilization units with hourly tariffs enhances the result if the "shadows" of the cost of downtime and the service life of the lining are taken into account. The practical value lies in a set of operational rules that allow stabilizing output, containing fuel consumption and reducing the spread of daily cost. The materials are suitable for workshops and headquarters where it is necessary to link metallurgy with a financial model and see the economic effect of technological settings in advance.
blast furnace processing, pig iron cost, pulverized coal fuel, coke quality, energy tariff, blast furnace gas utilization, simulation modeling, metallurgy margin
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