Article(id=1311360801076769520, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311360779169919555, articleNumber=null, orderNo=null, doi=10.13426/j.cnki.yky.2025.10.07, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1761321600000, receivedDateStr=2025-10-25, revisedDate=1767456000000, revisedDateStr=2026-01-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1790582378882, onlineDateStr=2026-09-28, pubDate=1779206400000, pubDateStr=2026-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790582378882, onlineIssueDateStr=2026-09-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790582378882, creator=13701087609, updateTime=1790582378882, updator=13701087609, issue=Issue{id=1311360779169919555, tenantId=1146029695717560320, journalId=1146123346816638986, year='2026', volume='45', issue='2', pageStart='1', pageEnd='156', issueExtLink='null', onlineDate='null', pubDate='1779206400000', pubDateStr='2026-05-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1790582373659, creator='13701087609', updateTime=1790583908456, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1311367216646418706, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311360779169919555, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1311367216646418707, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311360779169919555, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=49, endPage=60, ext={EN=ArticleExt(id=1311360801299067633, articleId=1311360801076769520, tenantId=1146029695717560320, journalId=1146123346816638986, language=EN, title=CFD-DEM Numerical Simulation of Particle Settling and Wear in a Moving Bed Adsorption Tower, columnId=1175805041752556213, journalTitle=Uranium Mining and Metallurgy, columnName=Mining and Hydrometallurgy, runingTitle=null, highlight=null, articleAbstract=

To improve the extraction efficiency of uranyl ions in a moving bed adsorption tower and reduce the loss of saturated resin, a geometric model incorporating key internal components was established using a coupled CFD-DEM approach, with model reliability validated against experimental data. Systematic simulations of particle settling under varying inlet flow rates were conducted, focusing on the kinetic behavior at the optimal flow rate. Based on these findings, structural optimizations were implemented, and the particle flow and collision characteristics before and after optimization were compared. The simulation results indicate that the particle settling process can be divided into three distinct stages: initial uniform settling, accelerated directional transport, and energy dissipation deposition. Local vortices induced by the liquid distribution device predominantly govern particle spatial distribution, leading to accumulation in the bottom region of the tower. At the optimal flow rate, over 90% of particles reside in the low-velocity range, indicating significant collective stability within the system. Particle contact statistics reveal that wear risk primarily stems from particle-particle collisions rather than particle-structure interactions. Comparative analysis of different flow rates demonstrates that velocity markedly influences particle collision frequency and energy by altering the flow field kinetic energy. While the optimized design improves particle distribution uniformity, it also results in a slight increase in collision energy, highlighting a trade-off between flow homogenization and collision dynamics. This study elucidates the microscopic mechanisms of particle transport and wear in moving bed adsorption towers, providing a theoretical basis for the optimization of devices and the regulation of operational parameters.

, authors=Tangyanting QING¹, Jieheng LEI², Lin LEI³, Jian DENG¹, Zeyong LEI¹, Yiming YANG¹, authorsList=Tangyanting QING, Jieheng LEI, Lin LEI, Jian DENG, Zeyong LEI, Yiming YANG, authorCompany=null, correspAuthors=Zeyong LEI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1311360801886270194, articleId=1311360801076769520, tenantId=1146029695717560320, journalId=1146123346816638986, language=CN, title=移动床吸附塔内颗粒沉降与磨损影响的CFD-DEM数值模拟, columnId=1175805041991631542, journalTitle=铀矿冶, columnName=开采·选冶, runingTitle=null, highlight=null, articleAbstract=

为提高移动床吸附塔内铀酰离子的提取效率并降低饱和树脂的损耗，采用CFD-DEM耦合方法，建立了包含关键内构件的几何模型，并利用实验数据验证了模型的可靠性。在此基础上，系统模拟了不同入口流量下颗粒的沉降过程，分析了最佳流量下的动力学行为；并进行了结构优化，对比了优化前后的颗粒流动与碰撞特性。仿真结果表明，颗粒沉降过程可分为初始均匀沉降、加速定向输运和能量耗散沉积3个阶段。布液装置诱导的局部涡流主导了颗粒的空间分布，导致其在塔底区域聚集。在最佳流量下，超过90%的颗粒处于低速区间，系统呈现显著的群体稳定性。颗粒接触统计表明，磨损风险主要源于颗粒-颗粒碰撞，而非颗粒-构件相互作用。不同流量对比显示，流速通过改变流场动能而显著影响颗粒碰撞频率与能量。优化设计虽改善了颗粒分布的均匀性，但也导致碰撞能量轻微升高，体现了流动均匀性与碰撞动力学之间的权衡关系。本研究揭示了移动床吸附塔内颗粒输运与磨损的微观机理，为设计优化与操作参数调控提供了理论依据。

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