Preparation method and application of adsorption material for extracting lithium from salt lake

• Main Authors: GAO SHIKANG, WU ZENGLING, XU XIAOYANG, KUANG CHEN, XIE HONGZHEN, WANG QIANKUN, JI CHANGQING, ZHONG PINGLI
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a preparation method and application of an adsorption material for extracting lithium from a salt lake, and realizes solid transformation of a liquid organic extractant. A diketone organic extraction agent and a phosphorus organic reagent (trioctylphosphorus oxide, 2-ethylhexyl phosphate 2-ethylhexyl ester) which are mature in existing salt lake lithium extraction are bonded to an organic ion exchange resin framework through polymerization-impregnation and other processes, and a solid adsorbent with selectivity to lithium is synthesized. The method not only has the lithium extraction function of a liquid organic extraction agent, but also reduces the problems of poor operation environment and serious pollution of the extraction agent, has positive economic and environmental benefits, and is suitable for lithium extraction of sulfate subtype and carbonate type salt lakes. 本发明公开了一种盐湖提锂吸附材料的制备方法及应用，实现了液态有机萃取剂的固态化转型，把现有的盐湖提锂成熟的双酮有机萃取剂、磷类有机试剂(三辛基氧化磷、2-乙基己基磷酸2-乙基己基酯)通过聚合-浸渍等过程键合到有机离子交换树脂骨架上，