摘要
中国含盐盆地赋存丰富的盐湖卤水和深部卤水资源,卤水中富集溴(Br)元素,具有潜在的开发利用价值。Br作为盐湖卤水中重要的资源元素,目前对其分布规律和物质来源的系统对比研究鲜有报道。本文以柴达木盆地察尔汗盐湖四个区段晶间卤水为研究对象,分析整个湖区Br元素分布规律和物质来源,对比中国不同含盐盆地卤水Br资源变化和物源联系,并总结不同卤水开发利用价值。结果表明:①察尔汗盐湖Br含量呈东高西低特征且不同区段差异明显;②别勒滩和达布逊区段卤水低Br受河流补给并经蒸发富集,而察尔汗和霍布逊区段高Br受北部断裂带上涌富Ca泉水补给;③中国含盐盆地(柴达木盆地、库车盆地、江汉盆地、吉泰盆地)大部分深部卤水高Br值主要受水-岩反应、沉积物及有机质中Br的解吸获得;④盐湖晶间卤水虽远不及深部卤水Br含量高,但其优点在于便于开发、综合利用率高,尤其浓缩卤水及老卤中的Br含量可预见性的高于工业开采品位,是当下和今后值得关注的资源。
The salt-bearing basins in China occurred in salt lake brine and deep brine resources and enriched in bromine(Br)elements,which have potential development and utilization value.As an important resource element in brines,systematic comparative studies on Br distribution and sources have been rarely reported.Qarhan Salt Lake(QSL)in Qaidam basin is the largest potash production base in China and a large comprehensive brine deposit with rich resources.In this paper,the intercrystalline brines of four sections of QSL was taken as the research object to analyze the distribution and source of Br in the whole lake area,and compared the change and provenance of Br in brines from different salt-bearing basins in China,and summarized the value of development and utilization.The results show that:①the Br concentrations in QSL are high in east and low in west,and the difference is obvious in different sections;②the lower Br in Beiletan and Dabuxun sections are recharged by rivers and enriched by evaporation,while the higher Br in Qarhan and Huobuxn sections are recharged by upwelling spring with high Ca in the northern fault zone;③the high Br values of most deep brines in salt-bearing basins of China(Qaidam basin,Kuqa basin,Jianghan basin,Jitan basin)are mainly obtained by leaching of water-rock reaction and desorption of Br in sediments and organic matter;④although the Br concentrations in brines of salt lake is far less than that in deep brine,it has the advantages of easy development and high comprehensive utilization rate.In particular,the predictability of Br in concentrated brine and old brine is higher than that of industrial grade,so it is a resource worthy of attention at present and in the future.
作者
宋华玲
樊启顺
李庆宽
刘万平
韩光
韩春梅
SONG Hualing;FAN Qishun;LI Qingkuan;LIU Wanping;HAN Guang;HAN Chunmei(Key Laboratory of Green and High-end Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Qinghai 810008,China;Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes,Xining,Qinghai 810008,China;University of Chinese Academy of Sciences,Beijing 101499,China;Qinghai Salt Lake Industry Co.Ltd.,Golmud,Qinghai 816099,China;Key Laboratory of Exploration Research of Salt Lake Resources in Qaidam Basin of Qinghai Province,Qaidam Comprehensive Geological and Mineral Exploration Institute of Qinghai Province,Golmud,Qinghai 816099,China)
出处
《地质学报》
EI
CAS
CSCD
北大核心
2024年第4期1198-1210,共13页
Acta Geologica Sinica
基金
第二次青藏高原综合科学考察“盐湖资源变化与远景评价”专题(编号2019QZKK0805)
国家自然科学基金项目(编号U21A2018,41872093)
青海省自然科学面上基金项目(编号2021-ZJ-932)联合资助的成果。
关键词
柴达木盆地
察尔汗盐湖
溴
分布规律
物质来源
开发利用价值
Qaidam basin
Qarhan Salt Lake
bromine
distribution
source
development and utilization value
