Article(id=1311360801080967957, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311360779169919555, articleNumber=null, orderNo=null, doi=10.13426/j.cnki.yky.2025.10.06, 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=1762272000000, revisedDateStr=2025-11-05, acceptedDate=null, acceptedDateStr=null, onlineDate=1790582378883, onlineDateStr=2026-09-28, pubDate=1779206400000, pubDateStr=2026-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790582378883, onlineIssueDateStr=2026-09-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790582378883, creator=13701087609, updateTime=1790582378883, 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=116, endPage=124, ext={EN=ArticleExt(id=1311360801391346454, articleId=1311360801080967957, tenantId=1146029695717560320, journalId=1146123346816638986, language=EN, title=CFD-DEM Coupled Simulation of Pneumatic Conveying Pipelines for Uranium Dioxide Particles, columnId=1175805041752556213, journalTitle=Uranium Mining and Metallurgy, columnName=Mining and Hydrometallurgy, runingTitle=null, highlight=null, articleAbstract=

To address pipeline blockage issues in the negative-pressure pneumatic conveying of uranium dioxide at a uranium company, this study employed a combined approach of CFD-DEM coupled simulation and field experiments. By examining particle flow patterns, gas-phase pressure distribution, and system pressure drop, the underlying mechanism of pipeline blockage was elucidated. The validity of the simulation model was confirmed through comparative analysis of field measurements and numerical results. The findings demonstrate that increasing the elbow curvature radius from 200 mm to 500 mm and the bend diameter ratio from 2.50 to 6.25 significantly reduced local pressure losses during conveying. As a result, particle flow stability improved, with the peak gas-phase pressure dropping to 27.2 kPa and the overall system pressure drop decreasing markedly, thereby restoring normal operation of the power equipment. This study verifies the reliability of the CFD-DEM model for optimizing the pneumatic conveying system of uranium dioxide particles, offering both theoretical support and practical guidance for achieving efficient and stable transport.

, authors=Wujiang ZHOU¹, Jian DENG¹, Jieheng LEI², Zeyong LEI¹, Wenxue YANG¹, authorsList=Wujiang ZHOU, Jian DENG, Jieheng LEI, Zeyong LEI, Wenxue 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=1311360801970160407, articleId=1311360801080967957, tenantId=1146029695717560320, journalId=1146123346816638986, language=CN, title=二氧化铀颗粒气力输送管道的CFD-DEM耦合模拟, columnId=1175805041991631542, journalTitle=铀矿冶, columnName=开采·选冶, runingTitle=null, highlight=null, articleAbstract=

针对某铀业公司二氧化铀颗粒物料负压气力输送作业中的管道堵料问题，采用CFD-DEM耦合模拟与现场试验相结合的方法，对气力输送过程进行了研究。通过分析颗粒输送流态、气相压力分布及系统压力降，明确了堵塞机理；通过现场试验与数值模拟结果的对比分析，验证了模型的适用性。结果表明：弯管曲率半径从200 mm增大至500 mm，弯径比从2.50增至6.25，气力输送局部压力损失大幅降低，颗粒流动状态良好，气相压强峰值降至27.2 kPa，系统总压力降显著降低，动力设备运行正常。研究结果证实了CFD-DEM模型在该二氧化铀颗粒物料气力输送系统优化中的可靠性，为二氧化铀颗粒高效、稳定输送提供了理论依据与工程参考。

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