中文摘要：

以便获得流动模式并且在分离 thickener 调查红泥的安定行为，计算液体动力学(CFD ) ，特定的子程序并且聚结安定理论被采用与介绍在工业规模 thickener 模仿三维的流动领域一自我冲淡喂系统。模拟结果现场与测量显示出好同意并且 thickener 的流动模式在速度和集中地上被介绍并且讨论。的优化实验喂井和自我冲淡的系统也被执行，并且显示最佳的 thickener 系统能冲淡稳固的集中在从 110 g/L 喂很好到将帮助 agglomerates 形成并且改进安定的红泥的 86 g/L 速度。而且，再通行泵的另外的力量能被节省，凝聚剂剂量在操作从 105g/t 被归结为 85g/t。

英文摘要：

In order to acquire the flow pattern and investigate the settling behavior of the red mud in the separation thickener, computational fluid dynamics （CFD）, custom subroutines and agglomerates settling theory were employed to simulate the three-dimensional flow field in an industrial scale thickener with the introduction of a self-dilute feed system. The simulation results show good agreement with the measurement onsite and the flow patterns of the thickener are presented and discussed on both velocity and concentration field. Optimization experiments on feed well and self-dilute system were also carried out, and indicate that the optimal thickener system can dilute the solid concentration in feed well from 110 g/L to 86 g/L which would help the agglomerates＇ formation and improve the red mud settling speed. Furthermore, the additional power of recirculation pump can be saved and flocculants dosage was reduced from 105g/t to 85g/t in the operation.