8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

In order to simulate synchronous distribution of coal (coke) and DRI (ore) in the Melter Gasifier of COREX-3000, with down moving of perimeter zone of char bed, we have studied by laboratory experiment effect of charging pattern and kind of material on the stock pile shape, distribution of ore/coal ratio, distribution of porosity and particle size segregation on radius direction. The differences of distribution of ore/coal ratio and porosity on radius direction for two typical burden distribution pattern and distribution model had been analyzed based on discrete element method (DEM). The experimental results under different charging pattern and kind of material show that, the stock pile shape presents a steamed bun shape that is the center of stock was higher but the edge of stock was lower; The charging angle range of ore, coal and the particle size of material have important effect on the distribution of ore (pellet, sinter) / coal (coke) ratio on radius direction; The porosity of burden was higher at center and edge area of the stock but lower at middle area of the stock; For the charging pattern that the angle range of ore is the same of coal (coke), the particle size segregation of materials on radius direction was smaller. The DEM simulations results showed that the pellets distributed more at middle area between two adjacent DRI Flap. In addition, under certain distribution pattern, the stock pile shape, distribution of pellets and distribution of ore/coal ratio on radius direction were big difference, for charging model of “in→out” and “out→in”.