| Abstract Scope |
In recent years, bottom-blowing carbonaceous particle technology has been developed for converters to improve the converter scrap rate. In this study, the utilisation of different carbonaceous particles and their influencing factors have been investigated by carrying out hot state experiments. The experiment shows that the dissolution of carbonaceous particles in molten iron is linear with time. Increasing the molten iron temperature and reducing the particle size of carbonaceous particles can effectively improve the utilisation rate of carbon. At a molten iron temperature of 1600℃ and a carbonaceous particle size of 1.0 mm, the utilisation rates of coke powder, anthracite, graphite and rubber powder were 34%, 42%, 53% and 48%, respectively, and graphite had the highest utilisation rate, which is an ideal heat supplement for converters. The results of this study provide an effective theoretical basis for high scrap ratio steelmaking in the converter. |