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| Numerical Simulation of Structure Optimization of Stirring Leaching Tank for Extractive Hydrometallurgy of Vanadium |
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Received:November 23, 2018
Revised:November 25, 2018
Accepted:November 26, 2018
Published Online:February 15, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.03.012 |
| KeyWord:stirring leaching tank; computational fluid dynamics; numerical simulation; optimization; mixing |
| Author | Institution |
| QI Fang |
武汉科技大学 资源与环境工程学院 |
| ZHANG Yi-min |
武汉科技大学 资源与环境工程学院 |
| XUE Nan-nan |
武汉科技大学 资源与环境工程学院 |
| LIU Tao |
武汉科技大学 资源与环境工程学院 |
| HUANG Jing |
武汉科技大学 资源与环境工程学院 |
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| Abstract: |
| Based on Fluent fluid dynamics software, standard k-ε turbulence model, Euler-Euler multiphase model and multi-reference frame method of steady-state flow were applied to simulate solid-fluid two-phase flow field of stirring leaching tank by changing number of impeller layers, blade layer spacing and distance of impeller from the bottom. The results show that increasing number of impeller layer can obviously improve the "dead zone" range of liquid velocity, and fluid mixing in the whole tank is more intense. When blade spacing is 0.33 D~0.53 D (D is inner diameter of leaching tank), main fluid flow pattern is confluence flow which the contact collision between solid and liquid can be strengthened and the two phase flow can be fully mixed. When height of lower blade from bottom is 0.13 D~0.23 D, it can effectively alleviate the problem of solid particles deposition at bottom of groove and promote effective dispersion of solid particles. |
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