【摘要】 采用Mixture多相流模型模拟干扰床分选机内液-固流动,并以模拟实验结果为基础,开展实验研究,得到双分选室干扰床的分选效果、各项最佳操作参数等。模拟研究表明,对于1～0.5 mm粒级颗粒,循环流量8 L/min工况下,密度为1.25 kg/L颗粒的分选效率为78.7%;对于0.5～0.25 mm粒级颗粒,循环流量3 L/min工况下,密度为1.25 kg/L颗粒的分选效率为84.3%。实验结果表明在入料粒度1～0.5 mm、水流速度8 L/min条件下,可能偏差Ep值达到最低值0.048 <0.1;在相同条件下,双分选室干扰床分选机Ep值小于单分选室干扰床分选机Ep值,从可能偏差值来看,双分选室干扰床分选效果优于单分选室干扰床。更多还原

【Abstract】 A multiphase flow model was used to simulate the liquid-solid flow in the interference bed separator,and experimental studies were carried out based on the results of the simulation to obtain the separation efficiency and optimal operating parameters of the dualchamber interference bed.The simulation study showed that for the 1-0.5 mm particle size,under the working condition of a circulation flow rate of 8 L/min,the separation efficiency of particles with a density of 1.25 kg/L was 78.7%;for the 0.5-0.25 mm particle size,under the working condition of a circulation flow rate of 3 L/min,the separation efficiency of particles with a density of 1.25 kg/L was 84.3%.The experimental results indicated that under the feeding particle size of 1-0.5 mm and water flow velocity of 8 L/min,the possible deviation E value could reach the minimum value of 0.048,which is less than 0.1;under the same conditions,the Ep value of the dual-chamber interference bed separator is lower than that of the single-chamber interference bed separator.Judging from the possible deviation values,the separation effect of the dual-chamber interference bed is better than that of the single-chamber interference bed.更多还原