Article(id=1236276108463763711, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236276104999268557, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2025.04.027, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1739721600000, receivedDateStr=2025-02-17, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772680793157, onlineDateStr=2026-03-05, pubDate=1753977600000, pubDateStr=2025-08-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772680793157, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772680793157, creator=13701087609, updateTime=1772680793157, updator=13701087609, issue=Issue{id=1236276104999268557, tenantId=1146029695717560320, journalId=1235980550691926019, year='2025', volume='45', issue='4', pageStart='1', pageEnd='200', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1772680792331, creator=13701087609, updateTime=1772681498687, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236279067746562719, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236276104999268557, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236279067746562720, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236276104999268557, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=147, endPage=152, ext={EN=ArticleExt(id=1236276112251220370, articleId=1236276108463763711, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Short-Process and Clean Preparation Technique for Battery-Grade Iron Phosphate, columnId=1236276106727321817, journalTitle=Mining and Metallurgical Engineering, columnName=METALLURGY, runingTitle=null, highlight=null, articleAbstract=
A new short-process preparation technique for battery-grade iron phosphate was explored with iron powder and phosphoric acid as main raw materials. The effects of iron powder dissolution mechanism, iron phosphate reaction conditions, and mother liquor recycle on product indicators were investigated. The results show that the dissolution rate of iron powder can reach 97.92% at a temperature of 70 ℃, with phosphoric acid at a concentration of 20%, iron and phosphorus at a ratio of 1/3, and iron powder at a size of 150 μm;after 1 h precipitation at 100 ℃, with an addition of hydrogen peroxide at 110% of the theoretical amount, an iron phosphate with D50 of 2 μm was prepared with the precipitation rate of 98.86%. The obtained iron phosphate has stable crystal form with uniform crystal grains, and the contents of elemental impurities are significantly lower than the requirements specified in the HG/T 4701—2021 standard. The precipitated mother liquor in the process can be recycled, leading to actualization of low-carbon and green production.
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以铁粉和磷酸为主要原料,探索电池级磷酸铁短流程制备新工艺。考察了铁粉溶解机制、磷酸铁反应条件以及母液循环等对产品指标的影响。结果表明,溶解温度70 ℃、磷酸浓度20%、铁磷比1/3、铁粉粒度150 μm条件下,铁粉溶解率达到97.92%;沉淀温度100 ℃、沉淀时间1 h、过氧化氢添加量为理论量110%条件下,磷酸铁D50为2 μm,沉淀率为98.86%。磷酸铁样品晶型稳定、晶粒规整且杂质元素含量显著优于HG/T 4701—2021标准规定。该工艺过程中沉淀母液可循环利用,能有效实现低碳绿色生产。
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郭强(1982—),男,北京人,博士,研究员,主要研究方向为工业固废与难处理矿物深度资源化与高值化利用。E-mail:
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, authorsList=梅振勇, 杨黎, 郭强, 李永利, 崔伟勇)}, authors=[Author(id=1236684528614429198, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=2817606844@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1236684528694120978, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, authorId=1236684528614429198, language=EN, stringName=Zhenyong MEI, firstName=Zhenyong, middleName=null, lastName=MEI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.School of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
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1.昆明理工大学 冶金与能源工程学院,云南 昆明 650093
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梅振勇(1999—),男,安徽黄山人,硕士研究生,主要研究方向为电池级磷酸铁的制备。E-mail:2817606844@qq.com
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梅振勇(1999—),男,安徽黄山人,硕士研究生,主要研究方向为电池级磷酸铁的制备。E-mail:2817606844@qq.com
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2.中国科学院过程工程研究所,战略性金属资源绿色循环利用国家工程研究中心,北京 100190)])], figs=[ArticleFig(id=1236684530644472372, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.1, caption=
Effect of reaction temperature on dissolution rate of iron powder, figureFileSmall=RscY5V/coonrkIJ3him1MQ==, figureFileBig=4s2xtOkEd69epBHeL4iRtg==, tableContent=null), ArticleFig(id=1236684530711581237, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图1, caption=
反应温度对铁粉溶解率的影响, figureFileSmall=RscY5V/coonrkIJ3him1MQ==, figureFileBig=4s2xtOkEd69epBHeL4iRtg==, tableContent=null), ArticleFig(id=1236684530808050230, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.2, caption=
Effect of Fe/P ratio on dissolution rate of iron powder, figureFileSmall=23BB2sZ/1Vj+psHkLRccTQ==, figureFileBig=OMxjW+5aKTw5n6Crdc2uyA==, tableContent=null), ArticleFig(id=1236684530887742007, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图2, caption=
铁磷比对铁粉溶解率的影响, figureFileSmall=23BB2sZ/1Vj+psHkLRccTQ==, figureFileBig=OMxjW+5aKTw5n6Crdc2uyA==, tableContent=null), ArticleFig(id=1236684530959045176, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.3, caption=
Effect of phosphoric acid concentration on dissolution rate of iron powder, figureFileSmall=eGxDzNSJ4GWzIaYYYBSRIg==, figureFileBig=bMUAcjcTWXG8TWqxiAs+qg==, tableContent=null), ArticleFig(id=1236684531026154041, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图3, caption=
磷酸浓度对铁粉溶解率的影响, figureFileSmall=eGxDzNSJ4GWzIaYYYBSRIg==, figureFileBig=bMUAcjcTWXG8TWqxiAs+qg==, tableContent=null), ArticleFig(id=1236684531080679994, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.4, caption=
Effect of reaction time on precipitation rate and particle size of iron phosphate, figureFileSmall=AI5LDo2A8XxGBrWs9TJ84Q==, figureFileBig=6sqo6Q9xbc0j24wZFbjMUQ==, tableContent=null), ArticleFig(id=1236684531151983163, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图4, caption=
反应时间对磷酸铁沉淀率和粒度的影响, figureFileSmall=AI5LDo2A8XxGBrWs9TJ84Q==, figureFileBig=6sqo6Q9xbc0j24wZFbjMUQ==, tableContent=null), ArticleFig(id=1236684531206509116, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.5, caption=
Effect of addition schemes of hydrogen peroxide on precipitation rate and particle size of iron phosphate, figureFileSmall=U4+7VRdq5EccIUfFHfXm2g==, figureFileBig=oSoi/tVtguv33YVSjNCy1g==, tableContent=null), ArticleFig(id=1236684531269423677, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图5, caption=
过氧化氢添加方式对磷酸铁沉淀率和粒度的影响, figureFileSmall=U4+7VRdq5EccIUfFHfXm2g==, figureFileBig=oSoi/tVtguv33YVSjNCy1g==, tableContent=null), ArticleFig(id=1236684531332338238, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.6, caption=
Effect of hydrogen peroxide dosage on precipitation rate and particle size of iron phosphate, figureFileSmall=6V2VKZfQVlQOhlJD2vWOsw==, figureFileBig=9XkyzQG68nlV0CN/aNx8/A==, tableContent=null), ArticleFig(id=1236684531395252799, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图6, caption=
过氧化氢添加量对磷酸铁沉淀率和粒度的影响, figureFileSmall=6V2VKZfQVlQOhlJD2vWOsw==, figureFileBig=9XkyzQG68nlV0CN/aNx8/A==, tableContent=null), ArticleFig(id=1236684532401885760, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.7, caption=
Effect of reaction temperature on precipitation rate and particle size of iron phosphate, figureFileSmall=2vQWgGeqbWb4YvtHizMY7g==, figureFileBig=rPJ40kkNmkVLfuQzMZ6wcA==, tableContent=null), ArticleFig(id=1236684532481577537, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图7, caption=
反应温度对磷酸铁沉淀率和粒度的影响, figureFileSmall=2vQWgGeqbWb4YvtHizMY7g==, figureFileBig=rPJ40kkNmkVLfuQzMZ6wcA==, tableContent=null), ArticleFig(id=1236684532544492098, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.8, caption=
XRD patterns of iron phosphate, figureFileSmall=3Qt6HN1BDyMenr4i8DuwPA==, figureFileBig=YFGDyx+bm78wsxvC3INgtQ==, tableContent=null), ArticleFig(id=1236684532615795267, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图8, caption=
磷酸铁XRD图谱与标准卡片对比, figureFileSmall=3Qt6HN1BDyMenr4i8DuwPA==, figureFileBig=YFGDyx+bm78wsxvC3INgtQ==, tableContent=null), ArticleFig(id=1236684532674515524, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.9, caption=
Variation of elements in mother liquor during recycling process, figureFileSmall=PNSMcYmg5SFZMC8a4w6z1A==, figureFileBig=DJ2uEumbNKueok7L3z73gg==, tableContent=null), ArticleFig(id=1236684532733235781, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图9, caption=
循环过程母液中元素变化规律, figureFileSmall=PNSMcYmg5SFZMC8a4w6z1A==, figureFileBig=DJ2uEumbNKueok7L3z73gg==, tableContent=null), ArticleFig(id=1236684532791956038, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.10, caption=
SEM image of iron phosphate, figureFileSmall=nyovyPXWPM0pISjoiAXoqg==, figureFileBig=AvrDoEPlI2aMORUqHbWtdw==, tableContent=null), ArticleFig(id=1236684532850676295, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图10, caption=
磷酸铁SEM图, figureFileSmall=nyovyPXWPM0pISjoiAXoqg==, figureFileBig=AvrDoEPlI2aMORUqHbWtdw==, tableContent=null), ArticleFig(id=1236684532905202248, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Fig.11, caption=
SEM images of iron phosphate prepared by mother liquor recycle, figureFileSmall=zYt6LVPizgBxNUZKOSub1g==, figureFileBig=F6WTu6XElDdoH1ggm2ZA+Q==, tableContent=null), ArticleFig(id=1236684532963922505, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=图11, caption=
母液循环制备的磷酸铁SEM图(a)循环1次;(b)循环2次;(c)循环3次;(d)循环4次
, figureFileSmall=zYt6LVPizgBxNUZKOSub1g==, figureFileBig=F6WTu6XElDdoH1ggm2ZA+Q==, tableContent=null), ArticleFig(id=1236684533022642762, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Table 1, caption=
Multi-elemental analysis of reduced iron powder
, figureFileSmall=null, figureFileBig=null, tableContent=
| Fe | Si | Mn | C | S | P | O | 不溶物 |
|---|
| 99.00 | 0.10 | 0.12 | 0.08 | 0.06 | 0.02 | 0.10 | 0.30 |
), ArticleFig(id=1236684533093945931, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=表1, caption=
还原铁粉化学多元素分析结果(质量分数)
, figureFileSmall=null, figureFileBig=null, tableContent=
| Fe | Si | Mn | C | S | P | O | 不溶物 |
|---|
| 99.00 | 0.10 | 0.12 | 0.08 | 0.06 | 0.02 | 0.10 | 0.30 |
), ArticleFig(id=1236684533156860492, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Table 2, caption=
Sieve analysis results of sample
, figureFileSmall=null, figureFileBig=null, tableContent=
| 粒级/mm | 产率/% |
|---|
| +0.150 | 0 |
| -0.150+0.125 | 10.15 |
| -0.125+0.100 | 53.40 |
| -0.100+0.074 | 8.86 |
| -0.074+0.045 | 19.99 |
| -0.045 | 7.60 |
| 合计 | 100.00 |
), ArticleFig(id=1236684533219775053, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=表2, caption=
样品筛分分析结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 粒级/mm | 产率/% |
|---|
| +0.150 | 0 |
| -0.150+0.125 | 10.15 |
| -0.125+0.100 | 53.40 |
| -0.100+0.074 | 8.86 |
| -0.074+0.045 | 19.99 |
| -0.045 | 7.60 |
| 合计 | 100.00 |
), ArticleFig(id=1236684533291078222, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Table 3, caption=
Effect of particle size of iron powder on its dissolution rate
, figureFileSmall=null, figureFileBig=null, tableContent=
| 铁粉粒度/μm | 铁粉溶解率/% |
|---|
| 74 | 96.16 |
| 150 | 97.92 |
| 270 | 85.89 |
), ArticleFig(id=1236684533353992783, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=表3, caption=
铁粉粒度对铁粉溶解率影响
, figureFileSmall=null, figureFileBig=null, tableContent=
| 铁粉粒度/μm | 铁粉溶解率/% |
|---|
| 74 | 96.16 |
| 150 | 97.92 |
| 270 | 85.89 |
), ArticleFig(id=1236684533416907344, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=EN, label=Table 4, caption=
Element contents in iron phosphate
, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素 | 含量(质量分数)/% | 是否合格 |
|---|
| 标准 | 试验样品 |
|---|
| K | ≤0.02 | 0.019 | 合格 |
| Ca | ≤0.01 | 0.008 | 合格 |
| Na | ≤0.02 | 0.017 | 合格 |
| Mg | ≤0.06 | — | 合格 |
| Al | ≤0.05 | 0.010 | 合格 |
| Zn | ≤0.015 | 0.003 | 合格 |
| Cu | ≤0.003 | — | 合格 |
| Mn | ≤0.1 | 0.007 | 合格 |
| Ti | ≤0.18 | 0.001 | 合格 |
| Fe | 28.5~30.0 | 29.67 | 合格 |
| P | 16.2~17.2 | 16.63 | 合格 |
), ArticleFig(id=1236684533484016209, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1236276108463763711, language=CN, label=表4, caption=
磷酸铁中各元素含量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素 | 含量(质量分数)/% | 是否合格 |
|---|
| 标准 | 试验样品 |
|---|
| K | ≤0.02 | 0.019 | 合格 |
| Ca | ≤0.01 | 0.008 | 合格 |
| Na | ≤0.02 | 0.017 | 合格 |
| Mg | ≤0.06 | — | 合格 |
| Al | ≤0.05 | 0.010 | 合格 |
| Zn | ≤0.015 | 0.003 | 合格 |
| Cu | ≤0.003 | — | 合格 |
| Mn | ≤0.1 | 0.007 | 合格 |
| Ti | ≤0.18 | 0.001 | 合格 |
| Fe | 28.5~30.0 | 29.67 | 合格 |
| P | 16.2~17.2 | 16.63 | 合格 |
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