从 bastnaesite 矿物中提取和提纯钍和稀土元素:浸出和沉淀综合研究

IF 1.5 3区 化学 Q3 CHEMISTRY, ANALYTICAL
Bekir Özkan, Yüksel Altaş, Süleyman İnan
{"title":"从 bastnaesite 矿物中提取和提纯钍和稀土元素:浸出和沉淀综合研究","authors":"Bekir Özkan, Yüksel Altaş, Süleyman İnan","doi":"10.1007/s10967-024-09724-y","DOIUrl":null,"url":null,"abstract":"<p>The present study focuses on investigating the conditions for acid leaching of Th and REEs and sequential oxalate precipitation to remove impurities from leach liquor. The effects of preheat treatment, leaching time, liquid/solid ratio, and acid concentration on Th, Sm, Pr, Nd, Ce, La, and U leaching yields were investigated. The best results were obtained at 400 °C preheated sample using 1 mol/L H<sub>2</sub>SO<sub>4</sub>, liquid/solid ratio of 1 mL/g, 60 min leaching time, and 30 °C leaching temperature. The leaching yields of Th, Sm, Pr, Nd, Ce, La, and U were found to be 41.7, 65.0, 68.2, 66.9, 84.3, 82.6, and 55.0% respectively. Th and REE liquors were treated with 0.5–1.5 mol/L H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> solutions in the precipitation step. Purity was enhanced through three sequential precipitation cycles, resulting in a purity grade of 98.59%.</p>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Extraction and purification of thorium and rare earth elements from bastnaesite mineral: a comprehensive leaching and precipitation study\",\"authors\":\"Bekir Özkan, Yüksel Altaş, Süleyman İnan\",\"doi\":\"10.1007/s10967-024-09724-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The present study focuses on investigating the conditions for acid leaching of Th and REEs and sequential oxalate precipitation to remove impurities from leach liquor. The effects of preheat treatment, leaching time, liquid/solid ratio, and acid concentration on Th, Sm, Pr, Nd, Ce, La, and U leaching yields were investigated. The best results were obtained at 400 °C preheated sample using 1 mol/L H<sub>2</sub>SO<sub>4</sub>, liquid/solid ratio of 1 mL/g, 60 min leaching time, and 30 °C leaching temperature. The leaching yields of Th, Sm, Pr, Nd, Ce, La, and U were found to be 41.7, 65.0, 68.2, 66.9, 84.3, 82.6, and 55.0% respectively. Th and REE liquors were treated with 0.5–1.5 mol/L H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> solutions in the precipitation step. Purity was enhanced through three sequential precipitation cycles, resulting in a purity grade of 98.59%.</p>\",\"PeriodicalId\":661,\"journal\":{\"name\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-08-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s10967-024-09724-y\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Radioanalytical and Nuclear Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s10967-024-09724-y","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0

摘要

本研究的重点是调查 Th 和 REEs 酸浸出和顺序草酸盐沉淀去除浸出液中杂质的条件。研究了预热处理、浸出时间、液/固比率和酸浓度对 Th、Sm、Pr、Nd、Ce、La 和 U 浸出率的影响。在使用 1 mol/L H2SO4、液体/固体比率为 1 mL/g、浸出时间为 60 分钟、浸出温度为 30 °C、预热 400 °C 的样品时,获得了最佳结果。发现 Th、Sm、Pr、Nd、Ce、La 和 U 的浸出率分别为 41.7%、65.0%、68.2%、66.9%、84.3%、82.6% 和 55.0%。在沉淀步骤中,用 0.5-1.5 mol/L H2C2O4 溶液处理 Th 和 REE 液。通过三个连续的沉淀循环提高了纯度,最终纯度等级为 98.59%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Extraction and purification of thorium and rare earth elements from bastnaesite mineral: a comprehensive leaching and precipitation study

Extraction and purification of thorium and rare earth elements from bastnaesite mineral: a comprehensive leaching and precipitation study

The present study focuses on investigating the conditions for acid leaching of Th and REEs and sequential oxalate precipitation to remove impurities from leach liquor. The effects of preheat treatment, leaching time, liquid/solid ratio, and acid concentration on Th, Sm, Pr, Nd, Ce, La, and U leaching yields were investigated. The best results were obtained at 400 °C preheated sample using 1 mol/L H2SO4, liquid/solid ratio of 1 mL/g, 60 min leaching time, and 30 °C leaching temperature. The leaching yields of Th, Sm, Pr, Nd, Ce, La, and U were found to be 41.7, 65.0, 68.2, 66.9, 84.3, 82.6, and 55.0% respectively. Th and REE liquors were treated with 0.5–1.5 mol/L H2C2O4 solutions in the precipitation step. Purity was enhanced through three sequential precipitation cycles, resulting in a purity grade of 98.59%.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
2.80
自引率
18.80%
发文量
504
审稿时长
2.2 months
期刊介绍: An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信