Article(id=1304141601438195964, tenantId=1146029695717560320, journalId=1303687303576780880, issueId=1304141595331293792, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1009-3842.2026.04.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1779811200000, receivedDateStr=2026-05-27, revisedDate=1781712000000, revisedDateStr=2026-06-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1788861187561, onlineDateStr=2026-09-08, pubDate=1787846400000, pubDateStr=2026-08-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1788861187561, onlineIssueDateStr=2026-09-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1788861187561, creator=13701087609, updateTime=1788861187561, updator=13701087609, issue=Issue{id=1304141595331293792, tenantId=1146029695717560320, journalId=1303687303576780880, year='2026', volume='', issue='4', pageStart='1', pageEnd='132', issueExtLink='null', onlineDate='null', pubDate='1787846400000', pubDateStr='2026-08-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1788861186106, creator='13701087609', updateTime=1788924908244, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1304408865437672371, tenantId=1146029695717560320, journalId=1303687303576780880, issueId=1304141595331293792, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1304408865437672372, tenantId=1146029695717560320, journalId=1303687303576780880, issueId=1304141595331293792, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=69, endPage=79, ext={EN=ArticleExt(id=1304141601790517501, articleId=1304141601438195964, tenantId=1146029695717560320, journalId=1303687303576780880, language=EN, title=Two-Stage Alkaline Leaching for Arsenic Removal and Simultaneous Sb-Sn Enrichment from Arsenic-Antimony-Tin Residue, columnId=1304141596639916642, journalTitle=Copper Engineering, columnName=Special Topic: Utilization of Mining and Metallurgical Solid Waste and Pollution Control, runingTitle=null, highlight=null, articleAbstract=

To address difficulties in separating arsenic (As) from antimony (Sb) and tin (Sn) in arsenic-antimony-tin residue, a thermodynamic analysis of Sb(Ⅲ)-Sn(Ⅳ)-H₂O system was conducted, and pH control window for phase separation was determined to be 9.0~10.3. Accordingly, a two-stage alkaline leaching process consisting of first-stage soda leaching and second-stage alkaline oxidative leaching was proposed for arsenic removal, supplemented by oxidative precipitation of antimony for its recovery. Effects of key parameters on As removal and Sb/Sn separation were systematically investigated, and the optimal conditions for each stage were determined. Under the optimized conditions, As content in the residue decreased from 17.52% to 1.81%, achieving an overall As removal rate of 92.14%, while direct recovery rates of Sb and Sn reached 97.74% and 95.44%, respectively. Mechanistic analysis revealed that during the first-stage leaching, arsenate decomposed to release AsO₄³⁻, while simultaneous hydrolysis of Sb³⁺ and Sn⁴⁺ generated colloidal Sb₂O₃·xH₂O and Sn(OH)₄, which adsorbed and encapsulated arsenic. In the second-stage leaching, H₂O₂ oxidized the colloidal Sb₂O₃·xH₂O to crystalline NaSb(OH)₆ precipitate, disrupting encapsulation structure and enabling further release of arsenic. Phase and valence transformations were verified by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope with energy dispersive spectroscopy (SEM-EDS) characterizations. This process enabled selective removal of As and simultaneous enrichment of Sb and Sn.

, authors=Ting Yang^{1, 2, 3}, Yunlong Sun^{1, 2, 3}, Hongke Zhang^{1, 2, 3}, Qingliang Peng^{1, 2, 3}, Wei Xiong^{1, 2, 3}, Xixiang Chen³, Linqiao Duan⁴, Youan Deng⁵, Huaquan Tang⁵, authorsList=Ting Yang, Yunlong Sun, Hongke Zhang, Qingliang Peng, Wei Xiong, Xixiang Chen, Linqiao Duan, Youan Deng, Huaquan Tang, authorCompany=null, correspAuthors=Yunlong Sun, 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=1304141602222530814, articleId=1304141601438195964, tenantId=1146029695717560320, journalId=1303687303576780880, language=CN, title=两段碱浸工艺从砷锑锡渣中脱砷及富集锑锡的研究, columnId=1304878720477590059, journalTitle=铜业工程, columnName=矿冶固废资源综合利用与污染防治专题, runingTitle=null, highlight=null, articleAbstract=

针对砷锑锡渣中砷（As）与锑（Sb）、锡（Sn）分离困难的问题，本文对Sb（Ⅲ）-Sn（Ⅳ）-H₂O体系进行热力学分析，确定相分离的pH调控窗口为9.0~10.3，据此提出“一段纯碱浸出+二段碱氧浸出”两段碱浸脱As工艺，并辅以氧化沉锑法回收Sb。系统考察了各阶段关键参数对As脱除及Sb、Sn分离的影响，确定了各阶段最优工艺条件。在最优综合条件下，渣中As含量由17.52%降至1.81%，综合脱砷率达92.14%，Sb、Sn直收率分别为97.74%和95.44%。机理分析表明，一段浸出时，砷酸盐分解释放AsO₄³⁻，同时Sb³⁺和Sn⁴⁺水解生成胶态Sb₂O₃·xH₂O和Sn（OH）₄，对As产生吸附与包裹作用；二段浸出时，H₂O₂将胶态Sb₂O₃·xH₂O氧化为晶态NaSb（OH）₆，破坏包裹结构，使被包裹的As进一步释放。X射线衍射分析（XRD）、X射线光电子能谱（XPS）及扫描电子显微镜-能量色散X射线能谱（SEM-EDS）表征结果验证了上述物相与价态转化规律。该工艺实现了As的选择性脱除以及Sb、Sn的同步富集。

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杨厅（1995—），男，江西丰城人，硕士，工程师，研究方向：工业废水废渣处理，E-mail：2498948885@qq.com

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杨厅（1995—），男，江西丰城人，硕士，工程师，研究方向：工业废水废渣处理，E-mail：2498948885@qq.com

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