Extracting lithium from the H2SO4 leaching solution of bauxitic claystone via co-precipitation methods without addition of Al source

Gao, Jie; Zhou, Ziyuan; Li, Na; Liu, Zhiqi; Wen, Hao; Li, Jisheng; Hu, Lijuan; Liu, Lifang; Luo, Cheng

doi:10.1016/j.ceja.2021.100223

Cited by 9 publications

(10 citation statements)

References 26 publications

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“…The abovementioned research indicated that coal-based sedimentary Li ore may be a very promising source for future Li demands. 8,16,17 type coal-based Li ore is still in its infancy. Currently, the Li extraction from coal-based ore is mainly through highconcentration inorganic acid leaching (typically sulfuric or hydrochloric acid).…”

Section: ■ Introductionmentioning

confidence: 99%

“…6 of Halwusu coal mine; Sun et al detected samples with a Li content of 657 g/t in Antabao coal mine, which is several-ten times higher than the world average grade. The above-mentioned research indicated that coal-based sedimentary Li ore may be a very promising source for future Li demands. ,, However, the extraction technique of new-type coal-based Li ore is still in its infancy. Currently, the Li extraction from coal-based ore is mainly through high-concentration inorganic acid leaching (typically sulfuric or hydrochloric acid). − However, the high-concentration inorganic acid not only increases the corrosion risk of the leaching equipment but also introduces acid impurities for the subsequent de-acidification and purification process, which requires a large amount of alkali to neutralize the excess acid and generates a great quantity of new neutralization slag impurities.…”

Section: Introductionmentioning

confidence: 99%

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Recycling Strategy toward Efficient and Green Lithium Leaching from Coal-Based Lithium Ores Enabled by Solubility Engineering and Reusable Solid Acid

Xie

et al. 2023

ACS Sustainable Chem. Eng.

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Lithium is an important strategic metal, but the supply of lithium ore is growing slowly, which is in sharp contradiction with the rapidly growing demand. Therefore, it is urgent to find new lithium resources. Recently, it has been found that coal-based lithium ore is expected to become a new type of lithium resource to meet the rapidly growing demand for lithium. However, the traditional Li extraction process using inorganic acids (i.e., H 2 SO 4 ) is facing serious environmental issues, and the excess acid needs to be neutralized before the subsequent purification process. Herein, for the first time, we proposed a novel recycling strategy for the efficient and scalable Li leaching from coal-based Li ores with a reusable solid acid (oxalic acid), in which oxalic acid can be easily recovered after the leaching process with facile solubility engineering. The influences of the leaching conditions and oxalic acid concentration on the Li leaching and recycling rates of oxalic acid were explored in detail. Under the optimal conditions, the Li leaching rate (89.12%) and recovery rate (88.12%) of oxalic acid reached nearly 90%. In addition, the results of X-ray diffraction and Fourier-transform infrared clearly proved the high purity of the recovered oxalic acid after Li leaching, and the recovered oxalic acid also possessed excellent leaching performance after five times of recycling experiments. Moreover, the leaching kinetic analysis showed that the Li extraction from coal-based Li ore with oxalic acid was a chemical-controlled process with an activation energy (E a ) of 74.42 kJ/mol. Therefore, with solubility engineering, the recycling of oxalic acid after Li leaching could be easily realized, which is possible for other solid acids and provides a promising strategy for the simultaneous realization of green Li extraction and leaching acid recovery.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recycling Strategy toward Efficient and Green Lithium Leaching from Coal-Based Lithium Ores Enabled by Solubility Engineering and Reusable Solid Acid

Xie

et al. 2023

ACS Sustainable Chem. Eng.

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“…In this process, both the extraction and stripping occur simultaneously, rendering MSX as a single-step continuous process. As a result, the separation in MSX is enhanced under nonequilibrium conditions because high driving forces are maintained, and separation continues until full recovery of the desired element is achieved. − Extraction of lithium from various clay mineral sources have been developed using coprecipitation and ion-exchange leachate methods. − …”

Section: Introductionmentioning

confidence: 99%

Separation of Lithium from Aluminum-Containing Clay Mineral Leachate Solution Using Energy-Efficient Membrane Solvent Extraction

Wagh,

Islam,

Lamichhane

et al. 2023

ACS Omega

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This study investigated a novel membrane solvent extraction (MSX) process for the recovery and separation of lithium (Li) from clay minerals using a cation exchange organic extractant [di-(2-ethylhexyl)phosphoric acid] (DEHPA). The Li is selectively extracted from clay mineral leachate solution using highly efficient aluminum hydroxide sorbents to form lithium aluminum double hydroxide sulfate (LDH sulfate) as the precipitate. Several delithiation methods have been explored to separate Li from aluminum (Al). LDH sulfate is dissolved in dilute H 2 SO 4 and used as the feed solution, and DEHPA is used to selectively separate Li and Al from the feed solution. The MSX process immobilizes DEHPA in the microporous membrane pores and continuously removes Al from the feed solution to obtain pure Li. The efficiency of DEHPA for the selective separation of Li from Al is determined by measuring its distribution coefficient. This study used the optimum feed solution pH of 3, strip solution concentration of 2 mol/L H 2 SO 4 , and an organic phase composition of 30% v/v DEHPA in Isopar-L. The MSX process achieved a Li yield of about 92% and a purity of ⩾ 94%. The results suggest that the innovative MSX technology is a time- and energy-efficient approach for the recovery and separation of high-purity Li for application in Li-ion batteries and other clean energy technologies.

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“…These include chemical leaching consisting of unit operations utilising different salts or solvents or combination of salts and solvents such as salt roasting and water leaching (Chen et al 2011;Yan et al 2012a;Luong et al 2013 andBaba et al 2022), combination leaching with HF and H 2 SO 4 (Wang et al 2020), and autoclave H 2 SO 4 leaching (Amer 2008). Guan et al (2022) proposed a novel H 2 SO 4 leaching and aluminium hydroxide precipitation method to improve the extraction rate of Li by cleverly utilising Al from bauxitic claystone. The results showed that during the precipitation of the leachate, the precipitation rate of Li + reached 97.2%.…”

Section: Introductionmentioning

confidence: 99%

“…Guan et al (2022) proposed a novel H 2 SO 4 leaching and aluminium hydroxide precipitation method to improve the extraction rate of Li by cleverly utilising Al from bauxitic claystone. The results showed that during the precipitation of the leachate, the precipitation rate of Li + reached 97.2%.…”

Section: Introductionmentioning

confidence: 99%

Beneficiation of a Nigerian lepidolite ore by sulfuric acid leaching

Olaoluwa

Baba

Oyewole

2023

Mineral Processing and Extractive Metallurgy: Transactions of t

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The dissolution of a Nigerian lepidolite ore in sulphuric acid solution for its optimal industrial transformation was carried out. The degree of influence of the acid concentration, reaction temperature, particle diameter, and reaction time on the rate of the ore dissolution was investigated. These parameters were observed to enhance the rate of the dissolution as the acid concentration was increased from 0.1 to 1.5 mol/L, reaction temperature from room temperature (27 ± 2°C) to 75°C, particle diameter from 63 to 90 µm and reaction time from 5 to 120 min, respectively. The ore dissolution kinetics was studied using the shrinking core model, based on which the process was found to follow a diffusion-controlled mechanism as the rate-determining step. The activation energy of 18.1 kJ/mol lends support to this assertion. At optimal conditions, the formation of a pure lepidolite crystal (K2Li3Al3Si7O21F3: (96-900-0834)), recommended as a precursor for preparing industrial lithium sulphate was obtained.

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Extracting lithium from the H2SO4 leaching solution of bauxitic claystone via co-precipitation methods without addition of Al source

Cited by 9 publications

References 26 publications

Recycling Strategy toward Efficient and Green Lithium Leaching from Coal-Based Lithium Ores Enabled by Solubility Engineering and Reusable Solid Acid

Recycling Strategy toward Efficient and Green Lithium Leaching from Coal-Based Lithium Ores Enabled by Solubility Engineering and Reusable Solid Acid

Separation of Lithium from Aluminum-Containing Clay Mineral Leachate Solution Using Energy-Efficient Membrane Solvent Extraction

Beneficiation of a Nigerian lepidolite ore by sulfuric acid leaching

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