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中文摘要：
针对循环流化床铁矿粉烧结技术中的关键问题，用离散颗粒数值模拟方法对不同密度床科颗粒在床内的分布进行了数值模拟。数值模拟将气相场和离散颗粒场分别用欧拉方法和拉格朗日方法进行处理，在每一时间步长内对气相场和离散颗粒场的相互作用进行耦合，得出了石英砂和铁矿粉混合床料在循环流化床内的分离规律。数值模拟结果与国外相同研究的实验结果进行了对比，验证结果表明本文所得到的模拟结果具有较高的准确性。
英文摘要：
The segregation due to the differences in particle size and solids density in circulating fluidized beds was studied with numerical simulation method. The air field and discrete particle field were respectively treated with Eulerian and Lagrangian methods. The reaction between the two fields was correlated in each time step. Simulation results were compared with the experimental data published by other researches and quantitative identity was obtained.
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