Process optimization on the extraction of rubidium from rubidium-bearing biotite

Zeng, Qiang; Huang, Leiming; Ouyang, Dongxiao; Hu, Yuehua; Zhong, Hui; He, Zhiguo

doi:10.1016/j.mineng.2019.03.020

Cited by 18 publications

(2 citation statements)

References 18 publications

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“…Under the optimal conditions, the L e (Rb) from Rb-BB reached 95.6%. Compared with our previous direct H 2 SO 4 leaching process (DSL1) involving 4 mol/L H 2 SO 4 and a liquid−solid ratio of 4:1 (mL/g), 24 and DSL2 involving 5.52 mol/L H 2 SO 4 and a liquid−solid ratio of 3:1 (mL/g), 48 in this study 56.63 and 54.73% H 2 SO 4 consumption was effectively saved, respectively. As shown in Table 6, this enhanced process can efficiently extract Rb without destroying the mica structure and effectively reduce the consumption of acid.…”

Section: ■ Results and Discussionmentioning

confidence: 92%

Efficient Leaching of Rubidium from Biotite by Ion Exchange without Destroying the Lamellar Crystal Structure

Han,

Ran,

et al. 2023

ACS Sustainable Chem. Eng.

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Both the rare metal in the mica and the mica minerals are valuable resources. However, in order to obtain the rare metal during the conventional extraction process, the mica crystal has to be destroyed, which results in a lot of solid waste being generated and inefficient utilization of mica minerals. In this work, rubidium-bearing biotite (Rb-BB) was adopted to efficiently extract Rb through ion exchange. The influences of experimental conditions on the Rb leaching efficiency (L e (Rb)) were explored in detail. Under the optimal conditions of 0.6 g/g Mg(NO 3 ) 2 , 1.5 mol/L H 2 SO 4 , leaching temperature 363 K, leaching time 6 h, and liquid−solid rate 5:1 (mL/ g), L e (Rb) reached 95.6%. The microscopic process was characterized by virous characterization techniques. The results clearly revealed that the lamellar structure of biotite was still retained complete and Mg 2+ was enriched in the biotite layers after leaching. Compared with direct acid leaching, this process could reduce the consumption of H 2 SO 4 by 54.73% with the same L e (Rb). Furthermore, the leaching kinetics analyses showed that the enhanced extraction of Rb was a chemical-controlled process with an activation energy (E a ) of 43.62 kJ/mol. Therefore, this process provides a promising strategy for the efficient extraction of metals occurring in phyllosilicate minerals.

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Section: ■ Results and Discussionmentioning

confidence: 92%

Efficient Leaching of Rubidium from Biotite by Ion Exchange without Destroying the Lamellar Crystal Structure

Han,

Ran,

et al. 2023

ACS Sustainable Chem. Eng.

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“…Fig. 2에는 문헌에서 보고된 각 루비듐 공급 원 내 루비듐(Rb 2 O 상당함량)과 각 공급원 내 추출율을 나 타낸 것이다 7,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] . 물론 이는 전세계에 걸쳐 보고된 연구 자들의 자료로 더 정확한 정보는 다양한 현장조건 및 추 출단계에서의 추가적인 실증연구를 통해 밝혀져야 한다.…”

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Rubidium Market Trends, Recovery Technologies, and the Relevant Future Countermeasures

Lee¹

2023

Resour. Recycl.

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This study discussed production, demand, and future prospects of rubidium, which is an alkali group metal that is highly reactive to various media and requires carefulness in handling, but no significant environmental hazard of rubidium has been reported yet. Rubidium is used in various fields such as optoelectronic equipment, biomedical, and chemical industries. Because of difficulty in production as well as limited demand, the transaction price of rubidium is relatively high, but its detail information such as market status and potential growth is uncertain. However, if the mass production of versatile ultra-high-performance equipment such as quantum computers and the necessity of rubidium use in the equipment are confirmed, there is a possibility that the rubidium market will expand in the future. Rubidium is often found together with lithium, beryllium, and cesium, and may be present in granite containing minerals such as lepidolite and pollucite, as well as in seawater and industrial waste. Several technologies such as acid leaching, roasting, solvent extraction, and adsorption are used to recover rubidium. The maximum recovery efficiency of the rubidium from the sources and the processing above is generally

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Extracting rubidium and potassium from complex rubidium ore: Process optimization and leaching kinetics

Liu,

Ma,

Zhang

et al. 2023

J. Cent. South Univ.

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Process optimization on the extraction of rubidium from rubidium-bearing biotite

Cited by 18 publications

References 18 publications

Efficient Leaching of Rubidium from Biotite by Ion Exchange without Destroying the Lamellar Crystal Structure

Efficient Leaching of Rubidium from Biotite by Ion Exchange without Destroying the Lamellar Crystal Structure

Rubidium Market Trends, Recovery Technologies, and the Relevant Future Countermeasures

Extracting rubidium and potassium from complex rubidium ore: Process optimization and leaching kinetics

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