文献类型：期刊文献

英文题名：Crystallization of calcium carbonate from lithium-containing brines

作者：Zhang, De-Kai[1];Zhou, Xia-Qing[1];Liu, Cheng-Lin[1,2];Lu, Gui-Min[1]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Minist Educ, Engn Res Ctr Salt Lake Resources Proc Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：556

外文期刊名：JOURNAL OF CRYSTAL GROWTH

收录：;EI(收录号：20205209694669);WOS:【SCI-EXPANDED(收录号:WOS:000607088600004)】；

基金：The authors wish to acknowledge the Guizhou Provincial Science and Technology Foundation (Grant (2018)1421) and the National Key R&D Program (Grant 2016YFC0401203 and 2019YFC0408204) for the financial support.

语种：英文

外文关键词：Impurities; Supersaturated solutions; Calcium carbonate; Lithium

摘要：The crystallization of calcium carbonate from mixing lithium-containing brines and sodium carbonate solution is studied. The effect of different ion types, feeding time, feed amount, feed concentration, stirring rate and temperature on calcium ion removal rate and lithium ion loss rate as well as properties of calcium carbonate crystals was investigated. The optimal process conditions are observed to be: feeding time 15 min, feed amount 100%, feed concentration 1.70 mol/L, stirring rate 300 rpm and temperature 30 degrees C. Under these conditions, the Li+ recovery rate is observed to reach up to 97.53%, whereas Ca2+ removal rate of 99.85% is achieved, along with the filtrate composition of Li+ 2.889 g/L, K+ 3.147 g/L and Na+ 16.788 g/L. The observed findings effectively realize the removal of the calcium ions from the brine containing lithium as well as the resource utilization of calcium carbonate.