Article(id=1314907862095196727, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907656704324517, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2026.01.024, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1756483200000, receivedDateStr=2025-08-30, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791428064129, onlineDateStr=2026-10-08, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791428064129, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791428064129, creator=13701087609, updateTime=1791428064129, updator=13701087609, issue=Issue{id=1314907656704324517, tenantId=1146029695717560320, journalId=1235980550691926019, year='2026', volume='46', issue='1', pageStart='1', pageEnd='206', issueExtLink='null', onlineDate='null', pubDate='1769875200000', pubDateStr='2026-02-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791428015160, creator='13701087609', updateTime=1791430491940, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314918045139690301, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907656704324517, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314918045139690302, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314907656704324517, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=146, endPage=151, ext={EN=ArticleExt(id=1314907863294767672, articleId=1314907862095196727, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Preparation of Battery-Grade Lithium Carbonate from Polymetallic Lithium-Bearing Sulfate Solution, columnId=1236276106727321817, journalTitle=Mining and Metallurgical Engineering, columnName=METALLURGY, runingTitle=null, highlight=null, articleAbstract=

In consideration of disadvantages of long process flow and low total recovery of lithium for the traditional preparation process of battery-grade lithium carbonate, it is proposed that a combined process consisting of impurity removal, transformation of sulfate radicals and thermal decomposition be adopted to directly prepare battery-grade lithium carbonate from polymetallic lithium sulfate solution, and then solvent extraction should be employed to recover lithium from washing water and mother liquor of lithium precipitation. In the impurity removal process, the pH of solution is adjusted to 10.0, and sodium dimethyldithiocarbamate (SDD) is added for deep removal of impurities; the obtained solution is added with barium carbonate paste, with a solid-liquid ratio of 1∶12 and a CO₂ flow rate of 60 L/h, and the transformed lithium bicarbonate solution is generated after 1 h reaction; in the following thermal decomposition stage, lithium carbonate solid is produced after 90 min reaction at 91-92 ℃ by adding an appropriate amount of calcium and magnesium ion chelating agent, stirring at a rate of 400 r/min. After washing with deionized water and drying, a battery-grade lithium carbonate product is produced with a purity of 99.85%. The washing water is combined with the mother liquor of lithium precipitation, and then subjected to solvent extraction, resulting in a stripping solution with a lithium content of 26.22 g/L. It is shown that the total lithium recovery rate from this process can reach 98.08%.

, authors=Yan MAO¹, Huiping HU¹, Qifan PENG², Quanfan PENG², Jiang ZHANG², authorsList=Yan MAO, Huiping HU, Qifan PENG, Quanfan PENG, Jiang ZHANG, authorCompany=null, correspAuthors=Jiang ZHANG, 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=1314907863793889849, articleId=1314907862095196727, tenantId=1146029695717560320, journalId=1235980550691926019, language=CN, title=从多金属含锂硫酸盐溶液中制备电池级碳酸锂, columnId=1236276107322913000, journalTitle=矿冶工程杂志, columnName=冶金, runingTitle=null, highlight=null, articleAbstract=

针对电池级碳酸锂传统制备工艺流程长和锂总回收率低等问题，采用除杂-硫酸根转化-热分解工艺流程从多金属含锂硫酸盐溶液直接制备电池级碳酸锂，并用溶剂萃取法对工艺流程中产生的洗水和沉锂母液进行锂的回收。结果表明，在除杂工序，调节溶液pH值至10.0，加入福美钠深度除杂，得到除杂后液；在硫酸根转化工序，按照固液比1∶12向除杂后液投加碳酸钡糊，在CO₂流量60 L/h、室温下反应1 h，得到转化后的碳酸氢锂溶液；在热分解工序，向碳酸氢锂溶液加入适量钙镁离子螯合剂，在溶液温度91~92 ℃、搅拌速度400 r/min条件下反应90 min，得到碳酸锂固体，经去离子水洗涤，烘干后得到纯度为99.85%的电池级碳酸锂产品。洗水和沉锂母液合并后经溶剂萃取，得到锂含量为26.22 g/L的反萃液。该工艺锂的总回收率达到98.08%。

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毛艳（2000—），女，湖南张家界人，硕士，主要从事资源回收工作。E-mail: 1420491300@qq.com

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毛艳（2000—），女，湖南张家界人，硕士，主要从事资源回收工作。E-mail: 1420491300@qq.com

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