Combustion Behavior and Combustion-supporting Mechanism of KMnO_4 on Mixing Pulverized Coals and Semicoke in Blast Furnace Injection

摘要

The static crucible method was employed to effects of different additions and coal mixing ratios on burning rate. The optimal amount was 4% and mixing ratio was Semicoke-Jincheng coal=7:3. XRD and TGA techniques were used to characterize combustion process. The combustion-supporting mechanism was that Mn~(7+)(CO~-)_7 weakens the bridged bond binding force among carbon structure units and changes lattice structure. Heat storage preparation time is shortened which accelerates pulverized coal combustion.