Microstructure and Melting Loss Behavior of Blast Furnace Incoming Coke and Radial Tuyere Coke

As an indispensable raw material in blast furnace ironmaking, coke plays important role, which is also the key to low-carbon smelting and reducing ironmaking carbon emissions, so it necessary study its quality, degradation behavior, microstructure evolution. In this work, pore structure micromorphology of incoming (IC) tuyere (TC) were analyzed comprehensively by comparative research methods. The results showed that microcrystalline TC was more orderly than IC. addition, order degree increased first then decreased radial direction reached highest value at distance 1–2 m from tuyere. porosity obviously. wall became thinner, size original micropores expanded. Simultaneously, large numbers generated, cracks appeared, resulting specific surface area volume becoming higher Moreover, graphite inside increased, crystal larger. direction, with increase temperature, number amorphous structures decreased, ordering continued grow. However, along core, a decrease temperature led stagnation content graphitization degree.