基于铝土矿的矿物复合材料的制备及其在川宣地1井深部卤水提锂中的应用-岩石矿物学杂志-CSCIED科技核心评价数据库-手机版

基于铝土矿的矿物复合材料的制备及其在川宣地1井深部卤水提锂中的应用

Preparation of bauxite-based mineral composites and its application to lithium extraction from deep brine in CXD 1 well

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DOI	10.20086/j.cnki.yskw.2025.4083
刊名	岩石矿物学杂志 Acta Petrologica et Mineralogica
年，卷(期)	2025, 44(1)
作者	钱程，郑绵平，张永生*,
作者单位	1. 中国地质科学院矿产资源研究所自然资源部盐湖资源与环境重点实验室, 北京 100037; 2. 中国地质科学院自然资源部深地科学与探测技术实验室, 北京 100037; 3. 中国地质科学院矿产资源研究所自然资源部成矿作用与资源评价重点实验室, 北京 100037
摘要	以天然铝土矿为原料,制备了以LiCl·2 Al(OH)₃·n H₂O为核心成分的铝土矿基矿物复合材料(bauxite-based mineral composites, BMC),并用于川宣地1井深部卤水中锂的分离和富集,并探讨了模拟溶液和真实卤水中BMC对Li⁺的吸附和解吸性能。模拟Li⁺溶液吸附结果表明,拟二级动力学模型和Langmuir 模型能较好地描述吸附过程,且298 K 时Li⁺饱和容量为 2.78 mg/g。川宣地1井深部卤水中Li⁺分离和富集研究结果表明,BMC用量1.0 g/25 mL时,卤水中 Li⁺ 的吸附率达到86.38%, 在Na⁺、K⁺、Ca²⁺ 和 Mg²⁺等竞争离子存在的情况下,对 Li⁺ 具有良好的选择性吸附, 经过 5 次吸附和再生后,吸附容量下降了10.64%。洗脱液经过离子交换树脂除杂后,采用Na₂CO₃沉淀的方式对洗脱液中Li⁺进行富集,Li₂CO₃产率最高可达80%以上,且制备的Li₂CO₃与商用分析纯Li₂CO₃具备相当的品质,表明铝土矿基矿物复合材料在卤水提取 Li⁺方面具备一定的应用潜力。
Abstract	Bauxite-based mineral composites (BMC) with LiCl ·2 Al(OH)₃·n H₂O as the core component were prepared from natural bauxite and used for the separation and enrichment of lithium in deep brine of CXD 1 well. The adsorption and desorption properties of Li⁺ of BMC were investigated in simulated solution and real brine. The simulated Li⁺ solution adsorption results demonstrated that the adsorption kinetics were well simulated by the pseudo-second-order model, and the Langmuir model was compatible with the adsorption data, with a maximum Li⁺ capacity of 2.78 mg/g at 298 K. The results of the separation and enrichment study of Li⁺ in the deep brine of CXD 1 well showed that the adsorption rate of Li⁺ in the brine reached 86.38% at the dosage of 1.0 g/25 mL of BMC, and that Li⁺ was adsorbed with good selectivity in the presence of competing ions, such as Na⁺, K⁺, Ca²⁺ and Mg²⁺. After 5 times of adsorption and regeneration, the adsorption capacity decreased by 10.64%. After the removal of impurities by ion exchange resin, the Li⁺ in the eluate was enriched by Na₂CO₃ precipitation, and the Li₂CO₃ yield could reach up to more than 80%. The prepared Li₂CO₃ had comparable properties with commercial analytical purity Li₂CO₃. It can be seen that the BMC used in this paper had potential application in the extraction of Li⁺ from real brine.
关键词	铝土矿；矿物复合材料；卤水；提锂
KeyWord	bauxite; mineral composites; brines; lithium extraction
基金项目
页码	181-193

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钱程，郑绵平，张永生*. 基于铝土矿的矿物复合材料的制备及其在川宣地1井深部卤水提锂中的应用 [J]. 岩石矿物学杂志. 2025; 44; (1). 181 - 193.

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