Enhanced leaching process of ion-adsorbed rare earth ores with itaconic acid and magnesium sulfate compound leaching agent

IF 3.8 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-02-01 DOI:10.1016/j.cep.2024.110137

Haitao Wang , Lingyan Li , Jingang Hu , Yun Fang , Yang Liu , Jun Wang , Ruan Chi , Chunqiao Xiao

{"title":"Enhanced leaching process of ion-adsorbed rare earth ores with itaconic acid and magnesium sulfate compound leaching agent","authors":"Haitao Wang , Lingyan Li , Jingang Hu , Yun Fang , Yang Liu , Jun Wang , Ruan Chi , Chunqiao Xiao","doi":"10.1016/j.cep.2024.110137","DOIUrl":null,"url":null,"abstract":"<div><div>A compound leaching agent (CLA) composed of itaconic acid (IA) and MgSO<sub>4</sub> was employed in this study, and the effects of the ratio of the two components, in addition to the initial pH, temperature, and liquid–solid ratio on the leaching rate of rare earths were investigated. Under the following conditions: MgSO<sub>4</sub> content=1 %, IA concentration = 6.0 g/L, pH = 4.5, liquid–solid ratio = 3:1, and reaction temperature = 25 ℃, the leaching efficiency of rare earths was 95.03 %, which was 9.34 % higher than that observed when using the MgSO<sub>4</sub> (85.69 %). Furthermore, the residual Mg content in the tailings was decreased because of the reduction in the amount of MgSO<sub>4</sub>. Compared with the tailings obtained using pure MgSO<sub>4</sub> as the leaching agent, the tailings obtained using CLA had 52.66 % lower Mg in the water-soluble state and 14.77 % lower Mg in the exchangeable state.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"208 ","pages":"Article 110137"},"PeriodicalIF":3.8000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering and Processing - Process Intensification","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0255270124004756","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

A compound leaching agent (CLA) composed of itaconic acid (IA) and MgSO₄ was employed in this study, and the effects of the ratio of the two components, in addition to the initial pH, temperature, and liquid–solid ratio on the leaching rate of rare earths were investigated. Under the following conditions: MgSO₄ content=1 %, IA concentration = 6.0 g/L, pH = 4.5, liquid–solid ratio = 3:1, and reaction temperature = 25 ℃, the leaching efficiency of rare earths was 95.03 %, which was 9.34 % higher than that observed when using the MgSO₄ (85.69 %). Furthermore, the residual Mg content in the tailings was decreased because of the reduction in the amount of MgSO₄. Compared with the tailings obtained using pure MgSO₄ as the leaching agent, the tailings obtained using CLA had 52.66 % lower Mg in the water-soluble state and 14.77 % lower Mg in the exchangeable state.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemical Engineering and Processing - Process Intensification 工程技术-工程：化工

CiteScore

7.80

自引率

9.30%

发文量

408

审稿时长

49 days

期刊介绍： Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.