Study of the process of dissociation of lithium carbonate in the presence of aluminum powder

Bazhenov, A. A.; Miklushevskii, V. V.; Vatulin, I. I.; Kropacheva, E. N.; Bidylo, A. P.

doi:10.3103/s1067821210010086

Cited by 7 publications

(2 citation statements)

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“…After 240 min, Li 2 CO 3 would have transformed to its liquid phase, experimentally observed between 700 and 731 °C. [21][22][23][24][25] The Li 2 CO 3 would apparently decompose into Li 2 O above 727 °C [24,26,27] which is accompanied by CO 2 release. Hence, the order of Li 2 CO 3 melting and decomposing might happen interchangeably.…”

Section: Later Stagementioning

confidence: 99%

Recovery of Cobalt and Lithium by Carbothermic Reduction of LiCoO2 Cathode Material: A Kinetic Study

Nuraeni

Avarmaa

Prentice

et al. 2023

Metall Mater Trans B

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Recycling of Li-ion battery cathode materials using carbon from the anode materials via carbothermic reduction would provide a reduction process option that could be carried out without introducing any external reactants. From this basis, this study investigated and examined the kinetics of carbothermic reduction of LiCoO 2 at 700 °C to 1100 °C under inert atmosphere up to 240 minutes reaction time using an isothermal mass change analysis combined with detailed microstructure evolution observation. The overall reduction mechanism appeared to involve diffusion of oxygen in LiCoO 2 during its thermal decomposition in the first stage, followed by the nucleation of cobalt in the second stage. The activation energy of the diffusion and nucleation stages were calculated to be 121 and 95 kJ/mol, respectively. The microstructure analyses showed a complex evolution of phases. At 700 °C to 900 °C, Li 2 CO 3 and Co phases were observed as the product of the reductions; while at 1000 °C to 1100 °C, Li 2 O and Co phases were observed. The information and data obtained are useful when comparing different recycling methods and optimizing the carbothermic reduction parameters for recycling cathode materials from spent Li-ion batteries.

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Section: Later Stagementioning

confidence: 99%

Recovery of Cobalt and Lithium by Carbothermic Reduction of LiCoO2 Cathode Material: A Kinetic Study

Nuraeni

Avarmaa

Prentice

et al. 2023

Metall Mater Trans B

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“…Therefore, it was considered that Li 2 O was produced during this melting and purging process. Figure 7 shows the phase diagram of Li 2 CO 3 -Li 2 O (Bazhenov et al, 2010). It shows the ratio of Li 2 O dissolved in the melts at different temperatures.…”

Section: Investigation Of Co 2 Absorption Performance Ofmentioning

confidence: 99%

Absorption of Carbon Dioxide at High Temperature with Molten Alkali Carbonate Using Bubble Column Reactor

Kanai

Terasaka

Fujioka

et al. 2019

J. Chem. Eng. Japan / JCEJ

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The purpose of this study is to examine the possibility of establishing a novel CO 2 absorption process with molten alkali carbonate using a bubble column reactor. In our previous study, a hot CO 2 recovery process using Li 4 SiO 4 suspended in molten Li 2 CO 3-K 2 CO 3 was developed. In the process, molten alkali carbonate itself showed great potential for CO 2 absorption at high temperature. If a hot CO 2 absorption process were established using only molten alkali carbonate, it could make the system simpler and the operating temperature range could be extended without the limitation of reaction temperature of solid absorbent. In the study, molten Li 2 CO 3 , Na 2 CO 3 , K 2 CO 3 and its eutectic mixture were selected as CO 2 absorbent. A bubble column was chosen as the device for gas absorption at high temperature. First, the CO 2 absorption performance of each single molten alkali carbonate was investigated. The result showed that the molten Li 2 CO 3 had a great ability to absorb CO 2 at high temperature. Li 2 O was thought to be produced by decomposition of Li 2 CO 3 during the melting and purging process and a reaction of CO 2 with Li 2 O occurred during the absorption process. Further, the CO 2 absorption performance of eutectic mixture increased exponentially with increasing the ratio of Li 2 CO 3 in composition. Second, the possibility of establishing a CO 2 absorption process using molten Li 2 CO 3 was examined. The overall CO 2 absorption process in the bubble column was investigated and the experimental results showed that the mass transfer of CO 2 into molten Li 2 CO 3 was the rate-controlling step. The operational conditions of the bubble column were optimized. The super cial gas velocity was an important operational parameter that a ected both the CO 2 absorption rate and total amount of CO 2 nally absorbed in the bubble column. The operating temperature also greatly a ected the amount of absorbed CO 2 .

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Process of Thermal Decomposition of Lithium Carbonate

Shi¹,

Qu²,

Liu³

et al. 2020

The Minerals, Metals &Amp; Materials Series

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Study of the process of dissociation of lithium carbonate in the presence of aluminum powder

Cited by 7 publications

References 0 publications

Recovery of Cobalt and Lithium by Carbothermic Reduction of LiCoO2 Cathode Material: A Kinetic Study

Recovery of Cobalt and Lithium by Carbothermic Reduction of LiCoO2 Cathode Material: A Kinetic Study

Absorption of Carbon Dioxide at High Temperature with Molten Alkali Carbonate Using Bubble Column Reactor

Process of Thermal Decomposition of Lithium Carbonate

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