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用HTTA(噻吩甲酰三氟丙酮)和TOPO(三辛基氧化膦)作流动载体、L113B为膜的表面活性剂、液体石蜡为膜的增强剂、磺化煤油为膜的溶剂和HCl水溶液作内相试剂等液膜体系,提取(富集)料液(或锂辉矿、锂云母矿、锂精矿等含锂资源)中的锂。实验结果表明,在选择条件下锂的提取(富集)率在93％以上,选择性的提取(富集)锂,膜的内相中含锂水溶液,经蒸发、溶剂萃取结晶物(即LiCl),LiCl的纯度在99.5％以上。应用前景广阔。
HTTA (thiophene formyl trifluoroacetone) and TOPO (trioctylphosphine oxide) were used as flow carriers, L113B was a membrane surfactant, liquid paraffin as a membrane enhancer, sulfonated kerosene as a membrane solvent, and aqueous HCl solution Internal phase reagents and other liquid film system, extraction (enrichment) liquid material (or lithium-hui mine, lepidolite, lithium concentrates and other lithium-containing resources) lithium. The experimental results show that the lithium extraction (enrichment) rate is more than 93% under the selective conditions, and the lithium is selectively extracted (enriched) and the lithium phase in the inner phase of the membrane is evaporated. The solvent extraction crystallization (ie, LiCl ), LiCl purity of 99.5% or more. Broad application prospects.