Article(id=1172169530806751853, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1172169457649697117, articleNumber=1009-2617(2025)04-0555-06, orderNo=null, doi=10.13355/j.cnki.sfyj.2025.04.015, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1739894400000, receivedDateStr=2025-02-19, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1757396594000, onlineDateStr=2025-09-09, pubDate=1755619200000, pubDateStr=2025-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1757396594000, onlineIssueDateStr=2025-09-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1757396594000, creator=13701087609, updateTime=1757396594000, updator=13701087609, issue=Issue{id=1172169457649697117, tenantId=1146029695717560320, journalId=1146120122248306696, year='2025', volume='44', issue='4', pageStart='433', pageEnd='581', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1757396576558, creator=13701087609, updateTime=1757401820494, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1172191452378547078, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1172169457649697117, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1172191452378547079, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1172169457649697117, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=555, endPage=560, ext={EN=ArticleExt(id=1172169531091964527, articleId=1172169530806751853, tenantId=1146029695717560320, journalId=1146120122248306696, language=EN, title=Desulfurization of High Sulfur Bauxite by Alkali Leaching, columnId=1152626641181700664, journalTitle=Hydrometallurgy of China, columnName=Experiment Research, runingTitle=null, highlight=null, articleAbstract=
Aiming at the problems of high sulfur content and difficult utilization of high sulfur bauxite,the alkaline leaching desulfurization process of high sulfur bauxite was studied.The effects of alkali mass concentration,liquid volume to solid mass ratio,leaching temperature and time on the desulfurization effect were investigated,and the reaction kinetics were analyzed.The results show that under the conditions of base concentration of 180 g/L,liquid volume to solid mass ratio of 8 L/1 kg,leaching temperature of 160 ℃ and leaching time of 5 h,the bauxite sulfur mass fraction after desulphurization is 0.42%.The desulfurization process is controlled by reaction-internal diffusion,and the apparent activation energy is 18.23 kJ/mol.The method can effectively reduce the sulfur content in high sulfur bauxite and is beneficial to the wide utilization of high sulfur bauxite.
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针对高硫铝土矿硫含量高、难利用的问题,研究了高硫铝土矿碱浸脱硫过程,考察了碱质量浓度、液固体积质量比、浸出温度及时间等参数对脱硫效果的影响,并分析了反应动力学。结果表明:在碱质量浓度180 g/L、液固体积质量比8 L/1 kg、浸出温度160 ℃、浸出时间5 h条件下进行铝土矿碱浸脱硫处理,脱硫后铝土矿中硫质量分数为0.42%;反应过程符合缩核模型,脱硫过程受反应-内扩散共同控制,表观活化能为18.23 kJ/mol。该方法能有效降低高硫铝土矿中的硫含量,有利于高硫铝土矿的广泛利用。
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马福宝(1985—),男,本科,工程师,主要研究方向为化学分析、环境监测和矿物利用。
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马福宝(1985—),男,本科,工程师,主要研究方向为化学分析、环境监测和矿物利用。
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马福宝(1985—),男,本科,工程师,主要研究方向为化学分析、环境监测和矿物利用。
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Phase analysis result of high sulfur bauxite, figureFileSmall=4RqBC5CfAcvzIqINkDthpQ==, figureFileBig=FSk4Qf/86BQ67eRPpLdrdg==, tableContent=null), ArticleFig(id=1172190063795486754, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图1, caption=
高硫铝土矿的物相分析结果, figureFileSmall=4RqBC5CfAcvzIqINkDthpQ==, figureFileBig=FSk4Qf/86BQ67eRPpLdrdg==, tableContent=null), ArticleFig(id=1172190063858401315, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Fig.2, caption=
Effect of alkali mass concentration on mass fraction of sulfur in bauxite, figureFileSmall=/mJKabCmwPNOfeQFt8Xs1w==, figureFileBig=uotVOyehXoWd6aq/y0GIPA==, tableContent=null), ArticleFig(id=1172190063917121572, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图2, caption=
碱质量浓度对铝土矿中硫质量分数的影响, figureFileSmall=/mJKabCmwPNOfeQFt8Xs1w==, figureFileBig=uotVOyehXoWd6aq/y0GIPA==, tableContent=null), ArticleFig(id=1172190064017784869, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Fig.3, caption=
Effect of leaching temperature on mass fraction of sulfur in bauxite, figureFileSmall=x8Jzc8O+eodiIiNLHX5EeQ==, figureFileBig=UR8vrhzatiG1qXto/luQXQ==, tableContent=null), ArticleFig(id=1172190064068116518, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图3, caption=
浸出温度对铝土矿中硫质量分数的影响, figureFileSmall=x8Jzc8O+eodiIiNLHX5EeQ==, figureFileBig=UR8vrhzatiG1qXto/luQXQ==, tableContent=null), ArticleFig(id=1172190064118448167, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Fig.4, caption=
Effect of liquid volume to solid mass ratio on mass fraction of sulfur in bauxite, figureFileSmall=eiY3oD9RBzqvWsHtOoLnkg==, figureFileBig=evUc249pXyZD1pgU0FAsBg==, tableContent=null), ArticleFig(id=1172190064223305768, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图4, caption=
液固体积质量比对铝土矿硫质量分数的影响, figureFileSmall=eiY3oD9RBzqvWsHtOoLnkg==, figureFileBig=evUc249pXyZD1pgU0FAsBg==, tableContent=null), ArticleFig(id=1172190064277831721, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Fig.5, caption=
Effect of leaching time on mass fraction of sulfur in bauxite, figureFileSmall=3GgWd+LqdFG15SlG/ml1mQ==, figureFileBig=hBJt5kgmAdZUmC6UrmSiyw==, tableContent=null), ArticleFig(id=1172190064349134890, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图5, caption=
浸出时间对铝土矿硫质量分数的影响, figureFileSmall=3GgWd+LqdFG15SlG/ml1mQ==, figureFileBig=hBJt5kgmAdZUmC6UrmSiyw==, tableContent=null), ArticleFig(id=1172190064403660843, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Fig.6, caption=
Relationship between desulfurization rate and leaching time at different temperatures, figureFileSmall=HbGXI6GhRluSjGD1yhZZSA==, figureFileBig=nXJdhdpjodPhQBaGakRNsw==, tableContent=null), ArticleFig(id=1172190064483352620, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图6, caption=
不同温度下脱硫率与浸出时间的关系, figureFileSmall=HbGXI6GhRluSjGD1yhZZSA==, figureFileBig=nXJdhdpjodPhQBaGakRNsw==, tableContent=null), ArticleFig(id=1172190064550461485, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Fig.7, caption=
Fitting curve of ln k1 and 1/T under surface reaction control, figureFileSmall=Eh++Je2X6ls5AfXB1C6Flw==, figureFileBig=yyx1CPRhJ+85pHB6LXdMtg==, tableContent=null), ArticleFig(id=1172190064604987438, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图7, caption=
表面反应控制时ln k1-1/T拟合曲线, figureFileSmall=Eh++Je2X6ls5AfXB1C6Flw==, figureFileBig=yyx1CPRhJ+85pHB6LXdMtg==, tableContent=null), ArticleFig(id=1172190064659513391, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Fig.8, caption=
Fitting curve of ln k2 and 1/T under internal diffusion control, figureFileSmall=XDv5nK2dH8LMq9ddUiRedQ==, figureFileBig=l+I6P8+i0KTRQ5oRjkyqNg==, tableContent=null), ArticleFig(id=1172190064722427952, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图8, caption=
内扩散控制时ln k2-1/T拟合曲线, figureFileSmall=XDv5nK2dH8LMq9ddUiRedQ==, figureFileBig=l+I6P8+i0KTRQ5oRjkyqNg==, tableContent=null), ArticleFig(id=1172190064768565297, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Fig.9, caption=
Fitting curve of ln k3 and 1/T under reaction and internal diffusion, figureFileSmall=F45ON9iELHzSgZmOfpnTKw==, figureFileBig=fdA3H3DF8pplCAysmcKzMQ==, tableContent=null), ArticleFig(id=1172190064814702642, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=图9, caption=
反应-内扩散共同控制时ln k3-1/T拟合曲线, figureFileSmall=F45ON9iELHzSgZmOfpnTKw==, figureFileBig=fdA3H3DF8pplCAysmcKzMQ==, tableContent=null), ArticleFig(id=1172190064898588723, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Table 1, caption=
Main chemical composition of high sulfur bauxite %
, figureFileSmall=null, figureFileBig=null, tableContent=
| Al2O3 | SiO2 | Fe2O3 | CaO | TiO2 | ST | |
| 59.82 | 20.65 | 4.85 | 0.56 | 3.01 | 4.25 | |
), ArticleFig(id=1172190064965697588, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=表1, caption=
高硫铝土矿的主要化学组成
, figureFileSmall=null, figureFileBig=null, tableContent=
| Al2O3 | SiO2 | Fe2O3 | CaO | TiO2 | ST | |
| 59.82 | 20.65 | 4.85 | 0.56 | 3.01 | 4.25 | |
), ArticleFig(id=1172190065028612149, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Table 2, caption=
Chemical composition of bauxite after desulphurization %
, figureFileSmall=null, figureFileBig=null, tableContent=
| Al2O3 | SiO2 | Fe2O3 | CaO | TiO2 | ST |
| 62.94 | 10.78 | 5.65 | 0.88 | 3.35 | 0.42 |
), ArticleFig(id=1172190065099915318, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=表2, caption=
脱硫后铝土矿的化学组成
, figureFileSmall=null, figureFileBig=null, tableContent=
| Al2O3 | SiO2 | Fe2O3 | CaO | TiO2 | ST |
| 62.94 | 10.78 | 5.65 | 0.88 | 3.35 | 0.42 |
), ArticleFig(id=1172190065158635575, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Table 3, caption=
Fitting parameters of different dynamic models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 温度/℃ | 表面反应控制 | 内扩散控制 | 反应-内扩散共同控制 |
| k1/min-1 | | k2/min-1 | | k3/min-1 | |
| 120 | 0.056 6 | 0.959 5 | 0.035 6 | 0.983 7 | 0.121 9 | 0.963 7 |
| 140 | 0.078 4 | 0.977 1 | 0.063 2 | 0.994 3 | 0.175 6 | 0.983 7 |
| 160 | 0.098 9 | 0.963 4 | 0.091 7 | 0.984 6 | 0.230 0 | 0.973 0 |
| 180 | 0.106 5 | 0.947 4 | 0.102 3 | 0.978 2 | 0.251 2 | 0.960 3 |
), ArticleFig(id=1172190065276076088, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=表3, caption=
不同动力学模型的拟合参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 温度/℃ | 表面反应控制 | 内扩散控制 | 反应-内扩散共同控制 |
| k1/min-1 | | k2/min-1 | | k3/min-1 | |
| 120 | 0.056 6 | 0.959 5 | 0.035 6 | 0.983 7 | 0.121 9 | 0.963 7 |
| 140 | 0.078 4 | 0.977 1 | 0.063 2 | 0.994 3 | 0.175 6 | 0.983 7 |
| 160 | 0.098 9 | 0.963 4 | 0.091 7 | 0.984 6 | 0.230 0 | 0.973 0 |
| 180 | 0.106 5 | 0.947 4 | 0.102 3 | 0.978 2 | 0.251 2 | 0.960 3 |
), ArticleFig(id=1172190065406099513, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=EN, label=Table 4, caption=
Activation energy corresponding to different reaction control models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 动力学模型 | Ea/(kJ·mol-1) |
| 表面反应控制 | 26.50 |
| 内扩散控制 | 15.92 |
| 反应-内扩散共同控制 | 18.23 |
), ArticleFig(id=1172190065485791290, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169530806751853, language=CN, label=表4, caption=
不同反应控制模型对应的活化能
, figureFileSmall=null, figureFileBig=null, tableContent=
| 动力学模型 | Ea/(kJ·mol-1) |
| 表面反应控制 | 26.50 |
| 内扩散控制 | 15.92 |
| 反应-内扩散共同控制 | 18.23 |
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