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浸矿剂阳离子活性与稀土浸出特性关系研究

Study on the Relationship between Cationic Activity of Leaching Agent and Leaching Characteristics of Rare Earth
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摘要 浸矿剂阳离子活性与浸出特性是离子型稀土浸出率的两个重要影响因素,为研究二者间的相关性,自主研发了柱浸实验装置,并结合核磁共振技术,获得了试样浸矿过程微观孔隙结构演化、浸出速率、稀土浸出量与浸矿次数的关系。综合分析可知,浸矿剂阳离子活性与土样微观孔隙结构、浸出速率关联性不强,试样孔隙结构主要由初始孔隙决定,浸出速率由孔隙结构与颗粒迁移的聚集程度决定。浸矿剂阳离子活性是稀土浸出质量的重要影响因素,但不是唯一的影响因素,浸矿剂物质的量浓度在一定程度上影响浸出效率。 Cationic activity of leaching agent and leaching characteristics are two important factors affecting the leaching rate of ion-type rare earth. In order to study the correlation between them, a column leaching experimental device was developed independently and the relationships between the evolution of micro-pore structure leaching rate, leaching amount of rare earth and leaching times were obtained by combining nuclear magnetic resonance technology. Comprehensive analysis showed that the cationic activity of leaching agent was not closely related to the micro-pore structure and leaching rate of soil samples. The pore structure of samples was mainly determined by the initial pore, and the leaching rate was determined by the pore structure and the aggregation degree of particle migration. Cationic activity of leaching agent was an important but not the only factor affecting the quality of rare earth leaching. The concentration of leaching agent affected the leaching efficiency to a certain extent.
作者 李士超 王晓军 邹远刚 黄广黎 聂亚林 LI Shichao;WANG Xiaojun;ZOU Yuangang;HUANG Guangli;NIE Yalin(School of Resource and Environmental Engineering, Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000, China;Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China)
出处 《矿业研究与开发》 CAS 北大核心 2019年第3期104-108,共5页 Mining Research and Development
基金 国家自然科学基金项目(51874148,51364011,51564012).
关键词 离子型稀土矿 阳离子活性 浸出质量 核磁共振 微观结构 Ion-type rare earth ore Cationic activity Leaching quality Nuclear magnetic resonance Microstructure
作者简介 李士超(1994-).男,河北保定人,在读硕士,主要从事工程岩体稳定性分析等方面的研究工作,Email:987942165@qq.com;通信作者:王晓军(1979-),男,山西晋中人,教授,博士生导师,主要从事工程岩体稳定性分析与控制等方面的教学与研究工作.Email:xiaojun7903@126.com。
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