Determining the gas trajectory in blast-furnace injection of pulverized coal

Resumo

A method is outlined for determining the gas trajectory from the blast-furnace tuyere. The change in the trajectory on switching from natural-gas injection to pulverized-coal injection is considered. With the same rate of coke consumption in the furnace, switching to pulverized-coal injection intensifies the peripheral gas flow. This may be eliminated by restoring the optimal total energy of the blast and the hearth gas.