Article(id=1236319271656149071, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236316193171239730, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2023.03.024, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1669478400000, receivedDateStr=2022-11-27, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772691084063, onlineDateStr=2026-03-05, pubDate=1685548800000, pubDateStr=2023-06-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772691084063, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772691084063, creator=13701087609, updateTime=1772691084063, updator=13701087609, issue=Issue{id=1236316193171239730, tenantId=1146029695717560320, journalId=1235980550691926019, year='2023', volume='43', issue='3', pageStart='1', pageEnd='179', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772690350096, creator=13701087609, updateTime=1772691872061, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236322576809652696, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236316193171239730, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236322576809652697, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236316193171239730, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=106, endPage=109, ext={EN=ArticleExt(id=1236319271928778840, articleId=1236319271656149071, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Selective Recovery of Lithium from Waste Lithium Iron Phosphate for Preparation of Lithium Carbonate, columnId=1236276106727321817, journalTitle=Mining and Metallurgical Engineering, columnName=METALLURGY, runingTitle=null, highlight=null, articleAbstract=

In an experiment, with hydrochloric acid as leaching agent and NaClO₃ as oxidizing agent, lithium was selectively leached from cathode material of spent lithium iron phosphate battery, and the effects of factors, including dosage of hydrochloric acid, solid-liquid ratio and reaction time, on the lithium leaching rate were investigated. It is shown that with an addition of hydrochloric acid at an amount of 1.0 time theoretical value, solid-liquid ratio of 1∶3 and reaction time of 3 h, the average lithium leaching rate can reach 99.33% by using this process. After that, magnesium hydroxide and sodium hydroxide were added into the raffinate in turn to remove impurities of P, Al and Fe. And then, the obtained solution was used to prepare Li₂CO₃ at 95 ℃ by adding anhydrous sodium carbonate. After water washing to remove NaCl, a high purity Li₂CO₃ (99.62%) can be obtained, which meets the industrial standard for industrial-grade lithium carbonate.

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以盐酸为浸出剂、NaClO₃为氧化剂，从废旧磷酸铁锂正极材料中选择性浸出锂，考察了盐酸用量、固液比和反应时间等参数对锂浸出率的影响。结果表明，在盐酸用量为理论用量的1.0倍、固液比1∶3、反应时间3 h条件下，锂平均浸出率可达99．33%；向浸出液中依次加入氢氧化镁、氢氧化钠可有效去除P、Al和Fe等杂质元素；在95 ℃下向除杂后溶液中加入无水碳酸钠可制备出Li₂CO₃，经水洗去除NaCl后，Li₂CO₃主含量可达99.62%，符合工业级碳酸锂行业标准。

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刘孟杰（1997—），男，河南焦作人，硕士研究生，主要研究方向为废旧磷酸铁锂电池回收。

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刘孟杰（1997—），男，河南焦作人，硕士研究生，主要研究方向为废旧磷酸铁锂电池回收。

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