挡板构型对含钒页岩浸出槽内多相流行为的影响OA北大核心CSTPCD

Stirring leaching tank is the key equipment in vanadium extraction process of stone coal.The structure optimization of stirring tank is of great significance to improve solid-liquid suspension performance.The numerical simulation of vanadium shale mixing tanks with different configuration baffles was carried out to analyze the influence of different baffles on the solid-liquid two-phase flow in vanadium shale mixing tanks by comparing the flow field,phase distribution,dead zone distribution and other simulation results.The results showed that the installation of baffle was beneficial to the full diffusion of vanadium shale particles during agitation.The overall flow rate of the segmented baffle was about 0.65m/s,which was faster than that of the standard baffle,and the increase rate is about 15.00%.The optimized effect of the segmented baffle was similar to that of the standard baffle on the diffusion of vanadium shale particles in the mixing tank.Both baffles can reduce the dead zone of vanadium shale particles,in which the low concentration area of the standard baffle was reduced by about 99.14%,and the deposition area of the segmented baffle was reduced by about 91.21%.In addition,the segmented baffle can save 20.00%stirring power compared to the standard baffle.The segmented baffle can obtain the same stirring effect as the standard baffle.At the same time,it is more energy saving and had higher application and popularization value.