基于Fluent软件,采用标准的k-ε湍流模型、欧拉-欧拉多相流模型、多重参考系稳态流动方法,对浸出槽内固液两相流动过程进行数值模拟研究,且采用示踪剂法研究流体在槽内停留时间的分布.将临界离底悬浮转速的数值模拟结果与Zwietering临界转速进行比较,两者吻合较好,验证模型的有效性.应用数值模拟方法研究桨叶离底高度、桨叶间距和阻尼板高度对槽内固相浓度分布和浸出液平均停留时间的影响规律.结果表明:在一定范围内,增大桨叶间距有利于固相分布均匀,延长浸出液的平均停留时间,从而促进固液相之间的传质扩散,当桨叶间距为2D(D为浸出槽直径)时,效果较优；在一定范围内,增大阻尼板高度有利于槽内固相的上浮；在允许范围内,降低桨叶离底高度有利于改善槽底沉积现象,增大浸出液的平均停留时间,当桨叶离底高度为0.3D时,效果较好.
参考文献
| [1] | 何纯海.锌浸出槽搅拌系统的改造设计[J].湖南有色金属,2003(03):48-51. |
| [2] | 徐申坤.锌冶金学[M].昆明:云南科学技术出版社,1996 |
| [3] | 彭长宏,胡振光,戴劲,傅锋.钢铁厂铁鳞硫酸的浸出过程[J].中南大学学报（自然科学版）,2009(04):874-878. |
| [4] | 彭长宏,李景芬,李基森.锰锌铁氧体废料的浸出工艺[J].中南大学学报（自然科学版）,2009(01):19-24. |
| [5] | 胡天觉,曾光明,袁兴中.湿法炼锌废渣中硫脲浸出银的动力学[J].中国有色金属学报,2001(05):933-937. |
| [6] | 邵琼,兰尧中.湿法炼锌废渣综合浸出过程动力学研究[J].有色金属（冶炼部分）,2006(03):11-13,44. |
| [7] | 梅光贵;王德润;周敬元;王辉.湿法炼锌学[M].长沙:中南大学出版社,2001 |
| [8] | 邓小华 .铜镉渣中回收金属锌、铜、镉的研究[D].同济大学,2005. |
| [9] | TAMBURINI A;CIPOLLINA A;MICALE G;CIOFALO M BRUCATO A .Deuse solid-liquid off-bottom suspension dynamics:Simulation and experiment[J].Chemical engineering Research and Design,2009,87:587-507. |
| [10] | FERNANDEZ MOGUEL L;MUHR H;DIETZ A;PLASARI E .CFD simulation of barium caronates precipitation in a fluidized bed reactor[J].Chemical engineering Research and Design,2010,88(09):1206-1216. |
| [11] | J.J. Bezuidenhout;J.J. Eksteen;S.M. Bradshaw .Computational fluid dynamic modelling of an electric furnace used in the smelting of PGM containing concentrates[J].Minerals Engineering,2009(11):995-1006. |
| [12] | CANIZARES P;PEREZ A;CAMARILLOA R;MAZARRO R .Simultaneous recovery of cadmium and lead from aqueous effluents by a semi-continuous laboratory-scale polymer enhanced ultrafiltration process[J].Journal of Membrane Science,2008,320:520-527. |
| [13] | M. Baniadam;J. Fathikalajahi;M.R. Rahimpour .Incorporation of Eulerian-Eulerian CFD framework in mathematical modeling of chemical absorption of acid gases into methyl diethanol amine on sieve trays[J].Chemical engineering journal,2009(1/3):286-294. |
| [14] | 江帆;黄鹏.Fluent高级应用与实例分析[M].北京:清华大学出版社,2008 |
| [15] | JOHN TA;ADENIYI L .Numerical and experimental studies of mixing charecteristics in a T-junction micro channel using residence-time distribution[J].Chemical Engineering Science,2009,64:2422-2432. |
| [16] | 钟丽,黄雄斌,贾志刚.固-液搅拌槽内颗粒离底悬浮临界转速的CFD模拟[J].北京化工大学学报(自然科学版),2003(06):18-22. |
| [17] | ZWlETERING T N .Suspending of solid particles in liquid by agitators[J].Chemical Engineering Science,1958,8(03):244-253. |
| [18] | 方兆珩.浸出[M].北京:冶金工业出版社,2007 |
| [19] | 王凯;虞军.搅拌设备[M].北京:化学工业出版社,2003 |
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