Preparation and characterization of potassium chloride from the roast-leaching treatment of a Nigerian quartz-rich muscovite ore

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-28 DOI:10.1007/s11144-024-02678-y

Ayo F. Balogun, Alafara A. Baba, Taiwo O. Ogundepo, Joel E. Akor

{"title":"Preparation and characterization of potassium chloride from the roast-leaching treatment of a Nigerian quartz-rich muscovite ore","authors":"Ayo F. Balogun, Alafara A. Baba, Taiwo O. Ogundepo, Joel E. Akor","doi":"10.1007/s11144-024-02678-y","DOIUrl":null,"url":null,"abstract":"<div><p>This study extracts potassium from quartz-rich muscovite ore via roast-leaching, employing CaCl<sub>2</sub> derived from periwinkle shells as additives. Various analytical and spectral techniques, including XRD, XRF, and SEM, were utilized for characterization throughout the research. The impact of experimental parameters such as CaCl<sub>2</sub> salt quantities, roasting temperature, leaching duration, and particle size on potassium extraction was thoroughly investigated. Under established conditions (ore to salts mass ratio of 1:5, temperature of 850 °C, particle size − 63 + 56 µm), 99.7% of the potassium was dissolved within 30 min. The roast-leaching process exhibited a reaction order of 1.178, and the estimated activation energy of 33.78 kJ/mol suggested a diffusion-controlled reaction through the product layer as the rate-limiting step for potassium extraction. The multiple regression analysis supports the data reported. To selectively recover potassium from the leach liquor, sodium perchlorate was introduced to precipitate potassium as KClO<sub>4</sub>, subsequently thermally decomposed to yield high-purity potassium chloride. This innovative approach demonstrates a sustainable and cost-effective method for potassium recovery from its ore.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11144-024-02678-y","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

This study extracts potassium from quartz-rich muscovite ore via roast-leaching, employing CaCl₂ derived from periwinkle shells as additives. Various analytical and spectral techniques, including XRD, XRF, and SEM, were utilized for characterization throughout the research. The impact of experimental parameters such as CaCl₂ salt quantities, roasting temperature, leaching duration, and particle size on potassium extraction was thoroughly investigated. Under established conditions (ore to salts mass ratio of 1:5, temperature of 850 °C, particle size − 63 + 56 µm), 99.7% of the potassium was dissolved within 30 min. The roast-leaching process exhibited a reaction order of 1.178, and the estimated activation energy of 33.78 kJ/mol suggested a diffusion-controlled reaction through the product layer as the rate-limiting step for potassium extraction. The multiple regression analysis supports the data reported. To selectively recover potassium from the leach liquor, sodium perchlorate was introduced to precipitate potassium as KClO₄, subsequently thermally decomposed to yield high-purity potassium chloride. This innovative approach demonstrates a sustainable and cost-effective method for potassium recovery from its ore.

Graphical Abstract

Abstract Image

查看原文本刊更多论文

尼日利亚富含石英的麝香石矿经焙烧-浸出处理后氯化钾的制备和特性分析

本研究采用从长春花壳中提取的 CaCl2 作为添加剂，通过焙烧浸出法从富含石英的麝香石矿中提取钾。在整个研究过程中采用了各种分析和光谱技术，包括 XRD、XRF 和 SEM。对 CaCl2 盐量、焙烧温度、浸出时间和粒度等实验参数对钾提取的影响进行了深入研究。在既定条件下（矿石与盐的质量比为 1:5，温度为 850 °C，粒度为 63 + 56 µm），99.7% 的钾在 30 分钟内被溶解。焙烧-浸出过程的反应阶数为 1.178，估计活化能为 33.78 kJ/mol，这表明通过产物层的扩散控制反应是钾提取的限速步骤。多元回归分析支持所报告的数据。为了从浸出液中选择性地回收钾，引入了高氯酸钠以 KClO4 的形式沉淀钾，随后进行热分解，生成高纯度的氯化钾。这种创新方法展示了一种从矿石中回收钾的可持续且具有成本效益的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.