Experiment and Mathematical Simulation on Magnetization Reduction Roasting of Limonite Particles with CO at Low Temperature
DAI Tao GONG Zhi-jun LI Bao-wei WU Wen-fei
School of Energy amd Environment，University of Science and Technology Inner Mongolia School of Energy amd Environment，University of Science and Technology Inner Mongolia School of Energy amd Environment，University of Science and Technology Inner Mongolia School of Energy amd Environment，University of Science and Technology Inner Mongolia
Abstract：The magnetization reduction roasting process of limonite particles in conversion of Fe2O3 into Fe3O4 with CO at low temperature (673~893 K) was studied by experiment and mathematical simulation. The established model included the heat transfer and mass transfer equations in the particles, and a changing pore of random pore reduction equation. By numerical simulation and experiment, the reduction degree data of limonite particles with time under different CO concentrations and temperatures were obtained. The results showed that the reduction process was controlled by chemical reaction, gas diffusion and particle pore changing. The limonite particles with the size of 100 mm at the porosity of 0.5 and CO concentration of 10%(mol) were reduced within 15 min at 673 K when the reduction degree was 1.
代涛 龚志军 李保卫 武文斐. 褐铁矿颗粒低温CO磁化还原焙烧的实验研究与数值模拟[J]. , 2014, 14(4): 624-630.
DAI Tao GONG Zhi-jun LI Bao-wei WU Wen-fei. Experiment and Mathematical Simulation on Magnetization Reduction Roasting of Limonite Particles with CO at Low Temperature. , 2014, 14(4): 624-630.
2014, Vol. 14 
