This thesis presents a compelling investigation into the specific electrical resistance of blast furnace coke, exploring how raw materials and production technology influence this crucial property. The authors effectively demonstrate that specific electrical resistance serves as a comprehensive indicator of coke quality, reflecting its structural orderliness and reactivity.
A key finding highlights the significant impact of coal blend composition, sinterability, and coking properties on coke structure and, consequently, its electrical resistance. The research clearly shows that increased coke readiness and structural order lead to decreased electrical resistance, making it a valuable metric for assessing the thermal treatment during coking.
Furthermore, the study provides practical insights into the effects of both organic (petroleum coke) and inorganic (boron carbide and silicon carbide nanopowders) additives on coke quality and electrical properties. While petroleum coke generally impairs mechanical and post-reaction strength, inorganic nanoparticles, especially in charges with low coking properties, prove effective in enhancing coke strength.
The comprehensive experimental approach, utilizing standard methods and well-illustrated setups, strengthens the reliability of the findings. The established correlation between specific electrical resistance and reactivity, supported by strong statistical correlations, offers a promising tool for optimizing coal blend composition and predicting coke behavior in blast furnace and electrothermal processes.
Overall, this thesis contributes valuable knowledge to the field, offering practical implications for improving coke quality and furnace efficiency.