Calculation of Coke Layers Situation in the Cohesive Zone of Blast Furnace

Abstract

Coke is the only batch component that does not soften in blast furnace thermal conditions. It is especially important at the temperatures of the cohesive zone forming because coke layers are the only gas-permeable charge. The aim of the work described in this article is the identification of individual coke layers situation in the cohesive zone. Numerical calculations of the cohesive zone situation are based on the horizontal below burden probe measures, however, coke layers are calculated using analytical geometry. The results can be presented as a bitmap; the individual and total area of the coke layers passing gases through the cohesive zone is also calculated. This form of results allows for subjective but quick assessment of the blast furnace operation by its crew.

Fuel Consumption Dependence on a Share of Reduction Processes in Imperial Smelting Furnace

“…Ramm, who first noticed the dependence of coke consumption on the share of wustite direct and indirect reduction. A support algorithm for fuel consumption optimization was successfully implemented in blast furnace practice [28,29]. The shared principles of optimal direct reduction rate (d DR ) and indirect reduction rate (d IR ) adopted to ISP technology are shown in Figure 6.…”

“…A group of modelling techniques should also be mentioned whose task is to minimize fuel consumption while maintaining the chemical efficiency of the metallurgical aggregate [26][27][28][29][30].…”

Prediction of the Consumption of Raw Materials and Fuels for the Blast Furnace

“…One of the ways of increasing the efficiency of the blast furnace process is to optimise the charge for the production of pig iron, primarily from the viewpoint of achieving minimum coke consumption. In a series of works by leading blast furnace experts [1][2][3][4][5][6][7][8], it has been convincingly demonstrated that minimum coke consumption can be achieved with an optimal ratio of direct and indirect reduction. A realistic indicator forecast of the share of direct and indirect reduction makes it possible to increase the reporting quality of analytical diagrams and, using them, to compile a shaft that ensures the minimum level of energy demand.…”