卤水
碳酸盐
降水
化学
锂(药物)
碳酸锂
化学工程
离子键合
矿物学
无机化学
离子
有机化学
物理
气象学
工程类
医学
内分泌学
作者
Giuseppe Battaglia,Leon Berkemeyer,Andrea Cipollina,José Luis Cortina,Marc Fernández de Labastida,J. López,Daniel Winter
标识
DOI:10.1021/acs.iecr.2c01397
摘要
An extensive experimental campaign on Li recovery from relatively dilute LiCl solutions (i.e., Li+ ∼ 4000 ppm) is presented to identify the best operating conditions for a Li2CO3 crystallization unit. Lithium is currently mainly produced via solar evaporation, purification, and precipitation from highly concentrated Li brines located in a few world areas. The process requires large surfaces and long times (18-24 months) to concentrate Li+ up to 20,000 ppm. The present work investigates two separation routes to extract Li+ from synthetic solutions, mimicking those obtained from low-content Li+ sources through selective Li+ separation and further concentration steps: (i) addition of Na2CO3 solution and (ii) addition of NaOH solution + CO2 insufflation. A Li recovery up to 80% and purities up to 99% at 80 °C and with high-ionic strength solutions was achieved employing NaOH solution + CO2 insufflation and an ethanol washing step.
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