盐湖卤水锂资源提取技术及开发现状

Technology and Development of Lithium Extraction from Salt Lake Brine

锂作为最轻的碱金属元素,广泛应用于国民经济的各个领域。近年来锂产品需求量日益增加,锂资源的有效开发和提取对于促进新能源发展、保障我国能源安全具有重要意义。青海柴达木地区盐湖卤水锂资源储量丰富,但高镁锂质量比增加了盐湖提锂的技术难度,并成为制约我国盐湖锂资源可持续发展的“卡脖子”关键问题。对目前国内外盐湖卤水提锂技术进行综述,介绍了卤水提锂方法最新研究进展,对于实现我国高镁锂比盐湖卤水锂资源绿色低碳高效开发利用具有重要意义。

As the lightest metal element,lithium is widely used in the various fields of the national economy.In recent years,the demand for lithium salts is increasing rapidly.Therefore,lithium resources extraction is of great significance for promoting the development of new energy and ensuring energy security.The Qaidam Basin in Qinghai province is the main area rich in salt lake resources,however,the high magnesium and low lithium contents of the brine significantly increase the difficulty of lithium separation and extraction,which is the key problem that restricts the sustainable utilization of salt lake lithium resources of China.The status quo and progress in extraction methods of lithium from salt lake brine was reviewed and the recent advances used in exploiting lithium from brine were briefly described,which were of great significance for the green low carbon development and comprehensive utility of salt lake brine with high magnesium-to-lithium mass ratios in China.