| Title | Evaluation on the mixing state of solid-liquid two-phase in stirred tank via an improved Voronoi diagram approach |
| Creator | |
| Date Issued | 2025-03-15 |
| Source Publication | Powder Technology
 |
| ISSN | 0032-5910 |
| Volume | 453 |
| Abstract | In hydrometallurgical leaching of zinc-containing solid wastes, the poor performance of the solid-liquid two-phase mixing process could result in significant energy wastage. It was necessary to realize the assessment of the solid-liquid two-phase mixing state in the stirred tank to provide data support for the mixing process enhancement. In this work, the boundaryless problem of the traditional Voronoi diagram was solved by reconfiguring the boundary through virtual points, and a mixing uniformity assessment method was proposed in combination with the coefficient of variation method. Meanwhile, the mapping of image pixels to Voronoi cells was established, breaking through the limitation that the traditional camera technique could only be used for surface measurements, and realizing point measurements of solid-phase concentration distribution relationships. The evaluation results show that the uniformity of the four images with normal, circular, concentrated and Poisson distributions were 1.87, 1.50, 4.38 and 0.61, respectively. The uniformity of the mixing images for the similar model at the moments of 6.4, 10 and 11 s were 1.51, 1.25 and 0.38, respectively. The present method was very sensitive to the variation of the solid-phase distribution. Point measurements enabled qualitative and quantitative analysis of the spatial and temporal characteristics of particle concentrations. Qualitative analyses help to visualize changes in mixing conditions. The quantitative analysis helps to target improvements in the mixing process. In addition, the method could be extended to analyze flow and mixing processes with discrete geometrical features. |
| Keyword | Concentration distribution Mixing uniformity Solid-liquid two-phase Statistical image analysis Uniformity indicator |
| DOI | 10.1016/j.powtec.2025.120620 |
| URL | View source |
| Language | 英语English |
| Scopus ID | 2-s2.0-85214524382 |
| Citation statistics | |
| Document Type | Journal article |
| Identifier | http://repository.uic.edu.cn/handle/39GCC9TT/12498 |
| Collection | Beijing Normal-Hong Kong Baptist University |
| Corresponding Author | Xiao，Qingtai |
| Affiliation | 1.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming,Yunnan,650093,China 2.Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming,Yunnan,650093,China 3.School of Electrical and Electronic Engineering,The University of Manchester,Manchester,M13 9PL,United Kingdom 4.Research Center for Mathematics,Advanced Institute of Natural Sciences,Beijing Normal University,Zhuhai,Guangdong,519087,China 5.Guangdong Provincial Key Laboratory of Interdisciplinary Research and Application for Data Science,Beijing Normal University-Hong Kong Baptist University United International College,Zhuhai,Guangdong,519087,China |
| Recommended Citation GB/T 7714 | Yao，Qinwen,Yang，Kai,Zhang，Xiaoxueet al. Evaluation on the mixing state of solid-liquid two-phase in stirred tank via an improved Voronoi diagram approach[J]. Powder Technology, 2025, 453. |
| APA | Yao，Qinwen., Yang，Kai., Zhang，Xiaoxue., Yin，Wuliang., Pan，Jianxin., .. & Xiao，Qingtai. (2025). Evaluation on the mixing state of solid-liquid two-phase in stirred tank via an improved Voronoi diagram approach. Powder Technology, 453. |
| MLA | Yao，Qinwen,et al."Evaluation on the mixing state of solid-liquid two-phase in stirred tank via an improved Voronoi diagram approach". Powder Technology 453(2025). |
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