Article(id=1311351089568506866, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311351083973305284, articleNumber=null, orderNo=null, doi=10.13426/j.cnki.yky.2025.04.13, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1745164800000, receivedDateStr=2025-04-21, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1790580063478, onlineDateStr=2026-09-28, pubDate=1763568000000, pubDateStr=2025-11-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790580063478, onlineIssueDateStr=2026-09-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790580063478, creator=13701087609, updateTime=1790580063478, updator=13701087609, issue=Issue{id=1311351083973305284, tenantId=1146029695717560320, journalId=1146123346816638986, year='2025', volume='44', issue='4', pageStart='1', pageEnd='158', issueExtLink='null', onlineDate='null', pubDate='1763568000000', pubDateStr='2025-11-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1790580062144, creator='13701087609', updateTime=1790583973598, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1311367489863381299, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311351083973305284, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1311367489863381300, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311351083973305284, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=58, endPage=62, ext={EN=ArticleExt(id=1311351089933411315, articleId=1311351089568506866, tenantId=1146029695717560320, journalId=1146123346816638986, language=EN, title=Dissolution Mechanism and Conditions of U3O8 in Nitric Acid, columnId=1175805041752556213, journalTitle=Uranium Mining and Metallurgy, columnName=MINING AND HYDROMETALLURGY, runingTitle=null, highlight=null, articleAbstract=

The traditional trough-type intermittent dissolution method for uranium concentrate is difficult to meet the intelligent development needs of uranium purification. The development of continuous intelligent dissolution technology is imminent. The intelligent dissolution technology requires precise control based on the dissolution reaction mechanism of uranium concentrate and suitable dissolution conditions. Given the above situation, the study first investigated the main chemical reactions during the nitric acid dissolution of U3O8 by means of experimental measurements and theoretical calculations. The chemical reaction process during dissolution was determined, and the variation trend of the dissolution reaction was elucidated. Furthermore, through experimental comparisons, the effects of key factors such as nitric acid concentration, temperature, and stirring intensity on the dissolution efficiency of U3O8 were investigated. The suitable conditions for nitric acid dissolution of U3O8 were determined, and the dissolution kinetics curve was measured. Finally, by comparing the dissolution performance of U3O8 from different sources, the reliability of the dissolution parameters was verified. Under the conditions of an initial nitric acid concentration of 6 mol/L, temperature of 60 ℃, stirring speed of 200 r/min, and dissolution time of 60 min, the dissolution rate of U3O8 reaches over 98%. The dissolution rules and parameters obtained from the study can serve as a basis for continuous dissolution of uranium oxides such as uranate, uranium peroxide, uranium trioxide, and uranium dioxide.

, authors=Shaohui KANG, Yuqing NIU, Dabing LI, Zhiquan ZHOU, Yongming ZHANG, Yan REN, Hao WANG, Kaikai YE, Jiayu ZHANG, Xiuming KANG, Ying ZHENG, authorsList=Shaohui KANG, Yuqing NIU, Dabing LI, Zhiquan ZHOU, Yongming ZHANG, Yan REN, Hao WANG, Kaikai YE, Jiayu ZHANG, Xiuming KANG, Ying ZHENG, authorCompany=null, correspAuthors=Xiuming KANG, 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=1311351090285732852, articleId=1311351089568506866, tenantId=1146029695717560320, journalId=1146123346816638986, language=CN, title=U3O8硝酸溶解机理及溶解条件研究, columnId=1175805041991631542, journalTitle=铀矿冶, columnName=开采·选冶, runingTitle=null, highlight=null, articleAbstract=

传统的槽式间歇溶解铀浓缩物方式已难以满足铀纯化智能发展的需求,智能溶解技术主要以铀浓缩物溶解反应机理及适宜溶解条件为基础,通过精确控制方式实现。采用试验测定和理论计算方式,研判八氧化三铀(U3O8)硝酸溶解所发生的主体化学反应,确定溶解化学反应过程,阐明溶解反应变化趋势;通过试验考察了硝酸浓度、温度、搅拌强度等因素对U3O8溶解效果的影响,确定了U3O8硝酸溶解的适宜条件,实现了U3O8在硝酸溶液中的高效溶解,并测得了溶解动力学曲线。对比研究了不同来源U3O8的硝酸溶解性能,验证了溶解参数的可靠性。研究结果表明,在初始硝酸浓度6 mol/L、温度60 ℃、搅拌转速200 r/min、溶解时间60 min条件下,U3O8溶解率达98%。该结果可作为U3O8连续溶解的基础依据,也可为重铀酸盐及过氧化铀、三氧化铀、二氧化铀等铀氧化物的硝酸溶解提供借鉴。

, authors=康绍辉, 牛玉清, 李大炳, 周志全, 张永明, 任燕, 王皓, 叶开凯, 张佳宇, 康修铭, 郑英, authorsList=康绍辉, 牛玉清, 李大炳, 周志全, 张永明, 任燕, 王皓, 叶开凯, 张佳宇, 康修铭, 郑英, authorCompany=null, correspAuthors=康修铭, authorNote=

康绍辉(1978—),男,河北唐山人,学士,研究员级高级工程师,从事铀纯化转化、铀及伴生铀资源开发研究。

, correspAuthorsNote=
康修铭(1995—),男,陕西榆林人,硕士,助理工程师,从事铀纯化转化研究。
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康绍辉(1978—),男,河北唐山人,学士,研究员级高级工程师,从事铀纯化转化、铀及伴生铀资源开发研究。

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康绍辉(1978—),男,河北唐山人,学士,研究员级高级工程师,从事铀纯化转化、铀及伴生铀资源开发研究。

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U3O8硝酸溶解机理及溶解条件研究
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康绍辉 , 牛玉清 , 李大炳 , 周志全 , 张永明 , 任燕 , 王皓 , 叶开凯 , 张佳宇 , 康修铭 , 郑英
铀矿冶 | 开采·选冶 2025,44(4): 58-62
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铀矿冶 |开采·选冶 2025 , 44 (4) : 58 -62
U3O8硝酸溶解机理及溶解条件研究
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康绍辉(1978—),男,河北唐山人,学士,研究员级高级工程师,从事铀纯化转化、铀及伴生铀资源开发研究。

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康绍辉(1978—),男,河北唐山人,学士,研究员级高级工程师,从事铀纯化转化、铀及伴生铀资源开发研究。

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康绍辉, 牛玉清, 李大炳, 周志全, 张永明, 任燕, 王皓, 叶开凯, 张佳宇, 康修铭, 郑英
作者信息
  • 核工业北京化工冶金研究院,北京 101149
通讯作者:
康修铭(1995—),男,陕西榆林人,硕士,助理工程师,从事铀纯化转化研究。
作者简介:

康绍辉(1978—),男,河北唐山人,学士,研究员级高级工程师,从事铀纯化转化、铀及伴生铀资源开发研究。

Dissolution Mechanism and Conditions of U3O8 in Nitric Acid
Shaohui KANG, Yuqing NIU, Dabing LI, Zhiquan ZHOU, Yongming ZHANG, Yan REN, Hao WANG, Kaikai YE, Jiayu ZHANG, Xiuming KANG, Ying ZHENG
Affiliations
  • Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing 101149, China
出版时间: 2025-11-20 doi: 10.13426/j.cnki.yky.2025.04.13
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传统的槽式间歇溶解铀浓缩物方式已难以满足铀纯化智能发展的需求,智能溶解技术主要以铀浓缩物溶解反应机理及适宜溶解条件为基础,通过精确控制方式实现。采用试验测定和理论计算方式,研判八氧化三铀(U3O8)硝酸溶解所发生的主体化学反应,确定溶解化学反应过程,阐明溶解反应变化趋势;通过试验考察了硝酸浓度、温度、搅拌强度等因素对U3O8溶解效果的影响,确定了U3O8硝酸溶解的适宜条件,实现了U3O8在硝酸溶液中的高效溶解,并测得了溶解动力学曲线。对比研究了不同来源U3O8的硝酸溶解性能,验证了溶解参数的可靠性。研究结果表明,在初始硝酸浓度6 mol/L、温度60 ℃、搅拌转速200 r/min、溶解时间60 min条件下,U3O8溶解率达98%。该结果可作为U3O8连续溶解的基础依据,也可为重铀酸盐及过氧化铀、三氧化铀、二氧化铀等铀氧化物的硝酸溶解提供借鉴。

八氧化三铀  /  过氧化铀  /  铀氧化物  /  重铀酸盐  /  硝酸溶解  /  溶解动力学

The traditional trough-type intermittent dissolution method for uranium concentrate is difficult to meet the intelligent development needs of uranium purification. The development of continuous intelligent dissolution technology is imminent. The intelligent dissolution technology requires precise control based on the dissolution reaction mechanism of uranium concentrate and suitable dissolution conditions. Given the above situation, the study first investigated the main chemical reactions during the nitric acid dissolution of U3O8 by means of experimental measurements and theoretical calculations. The chemical reaction process during dissolution was determined, and the variation trend of the dissolution reaction was elucidated. Furthermore, through experimental comparisons, the effects of key factors such as nitric acid concentration, temperature, and stirring intensity on the dissolution efficiency of U3O8 were investigated. The suitable conditions for nitric acid dissolution of U3O8 were determined, and the dissolution kinetics curve was measured. Finally, by comparing the dissolution performance of U3O8 from different sources, the reliability of the dissolution parameters was verified. Under the conditions of an initial nitric acid concentration of 6 mol/L, temperature of 60 ℃, stirring speed of 200 r/min, and dissolution time of 60 min, the dissolution rate of U3O8 reaches over 98%. The dissolution rules and parameters obtained from the study can serve as a basis for continuous dissolution of uranium oxides such as uranate, uranium peroxide, uranium trioxide, and uranium dioxide.

U3O8  /  uranium peroxide  /  uranium oxide  /  uranate  /  nitric acid dissolution  /  dissolution kinetics
康绍辉, 牛玉清, 李大炳, 周志全, 张永明, 任燕, 王皓, 叶开凯, 张佳宇, 康修铭, 郑英. U3O8硝酸溶解机理及溶解条件研究. 铀矿冶, 2025 , 44 (4) : 58 -62 . DOI: 10.13426/j.cnki.yky.2025.04.13
Shaohui KANG, Yuqing NIU, Dabing LI, Zhiquan ZHOU, Yongming ZHANG, Yan REN, Hao WANG, Kaikai YE, Jiayu ZHANG, Xiuming KANG, Ying ZHENG. Dissolution Mechanism and Conditions of U3O8 in Nitric Acid[J]. Uranium Mining and Metallurgy, 2025 , 44 (4) : 58 -62 . DOI: 10.13426/j.cnki.yky.2025.04.13
  • 中核集团领创科研项目(CNNC-JCYJ202211)
  • 中核集团领创科研项目(CNNC-JCYJ202211202210)
  • 国家重点研发计划(2023YFC2907802)
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2025年第44卷第4期
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doi: 10.13426/j.cnki.yky.2025.04.13
  • 接收时间:2025-04-21
  • 首发时间:2026-09-28
  • 出版时间:2025-11-20
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  • 收稿日期:2025-04-21
基金
中核集团领创科研项目(CNNC-JCYJ202211)
中核集团领创科研项目(CNNC-JCYJ202211202210)
国家重点研发计划(2023YFC2907802)
作者信息
    核工业北京化工冶金研究院,北京 101149

通讯作者:

康修铭(1995—),男,陕西榆林人,硕士,助理工程师,从事铀纯化转化研究。
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https://castjournals.cast.org.cn/joweb/yky/CN/10.13426/j.cnki.yky.2025.04.13
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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