(1. 中南大学 能源科学与工程学院，长沙 410083；
2. 深圳市中金岭南有色金属股份有限公司 丹霞冶炼厂，韶关 512325)
摘 要: 为了探究加压浸出搅拌釜内流场及温度分布规律，本文基于Fluent软件，采用SST k-ω湍流模型、欧拉-欧拉多相流模型以及多重参考系方法，在不考虑化学反应的前提下，耦合气液流动、传质和传热，构建加压浸出搅拌釜内流体流动及传热传质的数学模型，并分析了釜内气液流场、温度场的分布特征。结果表明：流体会在釜内形成两个主要循环区，桨叶后方出现“气穴”现象；靠近球形釜壁处流体存在明显的分层现象和局部高温区；釜壁处挡板对搅拌流场及温度场分布的影响较大，靠近挡板的位置流场分布更加紊乱，温度更均匀。
关键字: 加压浸出；搅拌釜；流场；温度场；传热传质
（1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;
2. Danxia Smelter, Shenzhen Zhongjin Lingnan Non-ferrous Metal Company Limited, Shaoguan 512325, China）
Abstract:In order to explore the flow field and the temperature distribution in the pressurized leaching stirred tank, the SST k-ω turbulence model, Euler-Euler multiphase flow model and multiple reference frame method were used to construct the mathematical model of the fluid flow, heat and mass transfer in the stirred tank. In the model, the gas-liquid flow, mass transfer and heat transfer were coupled while the chemical reaction was not considered. The gas-liquid flow field and the temperature distribution in the tank were analyzed. The results show that two main circulation areas are formed in the tank, and the "cavitation" occurs behind the blade. Obvious stratification and local high temperature regions are observed near the tank wall. The flow field and temperature distribution in the tank are considerably influenced by the baffle near the wall. The distribution of the flow field near the baffle is more chaotic while that of the temperature is more uniform.
Key words: pressure leaching; stirred tank; flow field; temperature field; heat-mass transfer
