海水制盐及综合利用过程中锂的定量分析及富集规律研究  

Quantitative Analysis and Accumulation Law of Lithium in the Process of Producing Salt and Multipurpose Utilization from Seawater

作　　者：郝晓翠 赵旭 王亮 张琦 董泽亮 黄西平 HAO Xiao-cui;ZHAO Xu;WANG Liang;ZHANG Qi;DONG Ze-liang;HUANG Xi-ping(Institute of Seawater Desalination and Multipurpose Utilization,SOA,Tianjin 300192,China)

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《盐科学与化工》2018年第6期34-36,共3页Journal of Salt Science and Chemical Industry

基　　金：国家青年科学基金项目(21506042);海洋公益性行业科研专项经费项目(201405008);中央级科研院所基本科研业务费团队项目(K-JBYWF-2015-T06;K-JBYWF-2015-G11)

摘　　要：文章针对天津长芦汉沽盐场有限责任公司日晒制盐及综合利用工艺过程中Li的含量变化及钠、钾、镁、钙等离子对火焰原子吸收光谱法测定锂的影响进行了研究。采用标准加入法直接测定高基质卤水及产品中的锂含量,加标回收率为98.8%~111.0%。研究表明了海水制盐及综合利用过程中锂的分布与富集规律,在海水蒸发浓缩过程中,锂含量随卤水浓缩而富集,固体产品中,六水氯化镁锂含量最高为20.47 mg/kg。液相中以老卤锂含量最高,可达13.22 mg/L。It studied the change of lithium content during the process of producing salt and multipurpose utilization from seawater in Tianjin Changlu Hangu Saltern Co. , LTD.. The interference of main cation in seawater, including Na^＋ , K^＋ , Mg^2＋ and Ca^2＋ , on the determination of lithium by flame atonfie absorption spectrometry （FAAS） was tested. The standard addition method was used to analyze the content of lithium in brine and products during making salt from seawater sue-cessfully and the recovery rate was 98.8 % to 111.0 %. It was found that lithium was enriched in brine during the process of seawater evaporation. Among all the solid salt, the content of lithium in magnesium chloride hexahydrate was the highest, which was up to 20.47 mg/kg. The bittern after earnallite crystallization had the highest lithium content of 13.22 mg/L among the brine.

关 键 词：海水制盐 锂 火焰原子吸收光谱法 

分 类 号：TS396.5[轻工技术与工程]