Blast-furnace operation with coke fines

Conclusion Depending on the smelting conditions, the use of coke fines (36-25 mm) for up to 22% of the coke charged into a blast furnace having a standard bell-and-hopper charging appratus, led to a decrease in pig-iron output by 1.0–1.6% (or 0.2–0.4% for each 1% of coke fines), an increase in unit coke consumption by 0.8–1.0% (or by 1.0%-0.19-0.17%), and a deterioration in the drainage capacity of the hearth. The performance indices of the furnace equipped with a revolving distributor show that it is possible to force smelting while using up to 25% coke of the 36-25-mm fraction in the charge. If the coke in the charge consists of more than 30% fines, smelting rate decreases and hearth performance declines. These developments are accompanied by a 3.3–3.6% reduction in furnace productivity (0.12–0.13% for each 1.0% of the 36-25-mm fraction of coke) and a 0.85–0.90% increase in unit coke consumption (0.03–0.04% for each 1% of coke fines). West Siberian Metallurgical Combine. Translated from Metallurg, No. 1, pp. 38–39, January, 1999.     

Method of reducing gaseous emissions from the large hopper of a blast-furnace charging apparatus

West Siberian Metallurgical Combine. Translated from Metallurg, No. 9, pp. 23–24, September, 1989.