察尔汗盐湖晒卤过程中铷和铯元素富集规律研究  

Research on the enrichment regularity of rubidium and cesium in Qarhan Salt Lake

作　　者：王超 孙小虹 丁晓姜 周友连 王淑丽 王凡[1,2] 马骏辉 刘万平 WANG Chao;SUN Xiao-hong;DING Xiao-jiang;ZHOU You-lian;WANG Shu-li;WANG Fan;MA Jun-hui;LIU Wan-ping(Geology Institute of China Chemical Geology and Mine Bureau,Beijing 100101,China;Qinghai Salt Lake Industry Co.,Ltd.,Golmud 816000,China)

机构地区：[1]中化地质矿山总局地质研究院,北京100101 [2]青海盐湖工业股份有限公司,青海格尔木816000

出　　处：《岩石矿物学杂志》2023年第5期701-710,共10页Acta Petrologica et Mineralogica

基　　金：青海省科技计划项目(2021-ZJ-773);中煤总局科技创新项目(ZMKJ-2022-J01-3);化工地质科技项目(ZHDK202102)。

摘　　要：通过对察尔汗盐湖Ⅰ、Ⅱ号采区盐田中卤水及固体进行系统采样和分析,发现卤水中的主微量元素在盐田摊晒过程中显示出不同程度的富集,除成盐外,还存在类质同象、母液夹带等现象。其中,铷和铯元素的富集规律与光卤石析出存在一定的关联。XRD和TOF-SIMS分析结果显示,铷与钾呈现出更强的正相关性,与钠呈现出负相关性,表明铷元素与钾元素存在类质同象现象。铯元素与钾元素的类质同象现象则不明显,可能主要通过母液夹带的方式进入盐样中。该研究揭示了卤水中铷和铯元素的富集规律和赋存形式,对盐湖铷和铯资源综合利用开发具有一定的借鉴意义。Through systematic sampling and analysis of brine and solids in the salt fields of mining areasⅠandⅡof Qarhan Salt Lake,it is found that the main and trace elements in the brine show different degrees of enrichment in the process of spreading in the salt fields.In addition to salt formation,there are also isomorphism,mother liquor entrainment and other phenomena.Among them,the enrichment rule of rubidium and cesium elements is related to the precipitation of carnallite.The XRD and TOF-SIMS analysis results show that rubidium exhibits a stronger positive correlation with potassium and a negative correlation with sodium,indicating the existence of isomorphism between rubidium and potassium elements.The phenomenon of isomorphism between cesium and potassium elements is not obvious,and it may mainly enter the salt sample through mother liquor entrainment.This research reveals the enrichment patterns and occurrence forms of rubidium and cesium elements in brine,which has certain reference significance for the comprehensive utilization and development of rubidium and cesium resources in salt lakes.

关 键 词：察尔汗盐湖 光卤石 铷 铯 类质同象 

分 类 号：P618.7[天文地球—矿床学] P619.211[天文地球—地质学]