Article(id=1311360826603307969, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311360814477575028, articleNumber=null, orderNo=null, doi=10.13426/j.cnki.yky.2026.03.04, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1773072000000, receivedDateStr=2026-03-10, revisedDate=1774627200000, revisedDateStr=2026-03-28, acceptedDate=null, acceptedDateStr=null, onlineDate=1790582384968, onlineDateStr=2026-09-28, pubDate=1787155200000, pubDateStr=2026-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790582384968, onlineIssueDateStr=2026-09-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790582384968, creator=13701087609, updateTime=1790582384968, updator=13701087609, issue=Issue{id=1311360814477575028, tenantId=1146029695717560320, journalId=1146123346816638986, year='2026', volume='45', issue='3', pageStart='1', pageEnd='172', issueExtLink='null', onlineDate='null', pubDate='1787155200000', pubDateStr='2026-08-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1790582382077, creator='13701087609', updateTime=1790583873531, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1311367070160355561, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311360814477575028, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1311367070160355562, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311360814477575028, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=35, endPage=43, ext={EN=ArticleExt(id=1311360826775274434, articleId=1311360826603307969, tenantId=1146029695717560320, journalId=1146123346816638986, language=EN, title=Pilot Test on Purification of Pregnant Solution of In-situ Leaching Uranium Based on Microchannel Separation Technology, columnId=1175805041752556213, journalTitle=Uranium Mining and Metallurgy, columnName=Mining and Hydrometallurgy, runingTitle=null, highlight=null, articleAbstract=

The pregnant solution produced by the neutral in-situ leaching uranium process often contains a large amount of fine particles, which can easily lead to problems such as the decrease of ion exchange rate of subsequent ion exchange resins, the decrease of resin adsorption capacity, and frequent cleaning cycles. Aiming at the bottleneck of low removal efficiency and insufficient operation stability of traditional solid-liquid separation technology for fine particles, this study introduced a microchannel separation technology based on the coupling enhancement mechanism of microchannel adhesion separation—oscillation desorption, and carried out field pilot test. The experimental results show that the removal efficiency of particles with particle size >1 μm is higher than 94%, and the removal efficiency of particles with particle size > 5 μm is close to 100%. Under different influent turbidity (6-33 NTU) conditions, the effluent turbidity was stable at 2-9 NTU, and the removal rate was maintained 60%-75%. The operating pressure difference of the system increased slowly with the accumulation of particles. After 8 days of stable operation of the device, the removal efficiency of particles with particle size >1 μm decreased to 70%. In order to restore the separation performance of the system, the device was backwashed. After backwashing, the removal ability of particles with particle size >5 μm was quickly restored. Compared with the conventional bag filter, the particles at the out-let of the microchannel separator are mainly distributed in the sub-micron to micron scale, and the medium and large particle sizes are significantly reduced. This study provides experimental basis and technical support for the engineering application of microchannel separation technology in the pretreatment of pregnant solution of in-situ leaching uranium.

, authors=Tianyin LIU¹, Xilong LI¹, Zhilong RUAN¹, Huiqi DONG¹, Danhui YANG², Wenjie LYU², authorsList=Tianyin LIU, Xilong LI, Zhilong RUAN, Huiqi DONG, Danhui YANG, Wenjie LYU, authorCompany=null, correspAuthors=Xilong LI, 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=1311360827123401667, articleId=1311360826603307969, tenantId=1146029695717560320, journalId=1146123346816638986, language=CN, title=基于微通道分离技术的地浸采铀浸出液净化中试研究, columnId=1175805041991631542, journalTitle=铀矿冶, columnName=开采·选冶, runingTitle=null, highlight=null, articleAbstract=

中性地浸采铀工艺产生的浸出液中常含有大量微细颗粒物，易导致离子交换树脂出现交换速度下降、吸附容量降低、清洗频次增加等问题。针对传统固液分离技术对微细颗粒去除效率低、运行稳定性不足的瓶颈，本研究引入了一种基于“微通道粘附分离—振荡脱附”耦合强化机制的微通道分离技术，并开展了现场中试试验。试验结果表明，该系统对粒径>1 μm颗粒物的去除效率高于94%，对粒径>5 μm颗粒物的去除效率接近100%；在不同进水浊度（6~33 NTU）条件下，出水浊度稳定在2~9 NTU，去除率维持在60%~75%。系统运行压差随颗粒物累积而缓慢上升，装置平稳运行8 d后，对粒径>1 μm颗粒物的去除效率下降至70%；为恢复系统分离性能，对装置进行反冲洗，反冲洗后其对粒径>5 μm颗粒的去除能力迅速恢复。与常规布袋过滤器相比，微通道分离器出口颗粒物主要分布在亚微米至微米尺度，中、大粒径颗粒显著减少。本研究为微通道分离技术在地浸采铀浸出液预处理中的工程应用提供了试验依据与技术支撑。

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