Surface features and flotation behaviors of spodumene as influenced by acid and alkali treatments

Zhu, Guangli; Zhao, Yuehao; Zheng, Xiayu; Wang, Yuhua; Lu, Dongfang

doi:10.1016/j.apsusc.2019.145058

Cited by 27 publications

(5 citation statements)

References 29 publications

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“…In this case, a dosage of 750 mg/L NaOH was used, achieving a recovery of 70%. This result confirms the positive findings from measurements in the previous research [ 54 ]. No noticeable effect was observed regarding its impact on the particle size distribution.…”

Section: Relevant Sectionssupporting

confidence: 92%

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Molecular Design and Spodumene Flotation—A Review

Retamal,

Robles,

Quezada

et al. 2024

IJMS

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Spodumene flotation stands as the most commonly used method to concentrate lithium minerals. However, it faces significant challenges related to low collector recoveries and similarity in the surface characteristics of the minerals, which make the effective separation of this valuable mineral difficult. For this reason, numerous researchers have conducted studies to address and confront this problem. In this work, an exhaustive bibliographic search was carried out using keywords and search queries, and the results were structured in three sections according to temporal, methodological, and thematic criteria. The first section covers the period from 1950 to 2004, focusing on experimental tests. The second section covers from 2004 to the present and focuses on flotation tests and measurement analysis. Simultaneously, the third section spans from 2011 to the present and is based on molecular dynamics simulations. Topics covered include spodumene surface properties, the influence of metal ions, pre-treatment techniques, and the use of collectors. Ultimately, molecular dynamics simulations are positioned as a tool that accurately represents experimental phenomena. In this context, specialized software such as Materials Studio or Gromacs prove to be reliable instruments that allow a detailed study of mineral surfaces and other elements to be carried out, which justifies their consideration for future research in this scientific field.

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Section: Relevant Sectionssupporting

confidence: 92%

“…The authors concluded that alkaline treatment using NaOH is more beneficial, as it enhances collector adsorption on the mineral surface, leading to increased recovery. Conversely, acidic treatment with HCl would have a depressant effect on the mineral [ 54 ].…”

Section: Relevant Sectionsmentioning

confidence: 99%

Molecular Design and Spodumene Flotation—A Review

Retamal,

Robles,

Quezada

et al. 2024

IJMS

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“…Studies have shown that spodumene floatability was influenced by pretreatment in terms of changing the composition of the main elements (Si, Al and Li) on the particle surface [12] , [13] . ICP-OES tests are used to study and compare the surface dissolution characteristics of spodumene with different particle size and pretreatment systems.…”

Section: Resultsmentioning

confidence: 99%

“…The pretreatment process of ore slurry has been widely used in the spodumene beneficiation industry. Researches and practices have shown that, before flotation, a long-term mechanical agitation pretreatment of the ore slurry with sodium hydroxide can greatly improve the efficiency and stability of the subsequent flotation process [12] , [13] . During the pretreatment process, irregular dissolution occurred on the mineral surface.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic pretreatment of spodumene with different size fractions and its influence on flotation

Chu

Chen

et al. 2022

Ultrasonics Sonochemistry

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The potential of ultrasonic pretreatment enhancing selective surface dissolution to improve the floatability of spodumene with different size fractions was verified and investigated. For coarse particles of −0.15 + 0.0385 mm, compared with traditional pretreatment methods, ultrasonic pretreatment could optimize the physicochemical properties of the surface, markedly increased the amount of NaOL adsorbed on the mineral surface, and improved the floatability of the spodumene. For fine particles of −0.0385 mm, both pretreatment methods (Ultrasonic and Traditional) could greatly increase the flotation recovery, but ultrasonic pretreatment had no obvious advantage compared with traditional method. ICP combined with XPS analysis were conducted to investigate the dissolution mechanism of spodumene surface in different pretreatment system. Si species on the surface of coarse particles were easily dissolved into the solution under the effect of ultrasound, which increases the relative content of Al and Li species on the surface. This was conducive to the adsorption of the collectors on the surface. However, the selective dissolution of the fine particle surface was weakened by excessive energy intake in the ultrasonic system, which neutralized the advantage brought by the large amount of dissolution, making the results obtained by the two preprocessing methods the same.

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“…While numerous studies have been conducted on aspects of spodumene flotation systems [23][24][25][26][27][28], there are limited studies detailing spodumene concentration by DMS. DMS is a process that separates materials of different densities using a media with a known specific gravity (S.G.), greater than that of water (hence the name "heavy" or "dense" media), to produce a float and sink product; the process is effective for a feed size ranging from 500 to 850 µm [13,29].…”

Section: The Beneficiation Of Hard-rock Deposits Using Dense Media Se...mentioning

confidence: 99%

The Recovery and Concentration of Spodumene Using Dense Media Separation

Gibson

Aghamirian²,

Grammatikopoulos³

et al. 2021

Minerals

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In coming years, global lithium production is expected to increase as the result of widespread electric vehicle adoption. To meet the expected increase in demand, lithium must be sourced from both brine and hard-rock deposits. Heavy liquid separation (HLS) and dense media separation (DMS) tests were conducted on the pegmatites from Hidden Lake, NWT, Canada to demonstrate the potential role of this technology in the concentration of spodumene (LiAlSi2O6) from hard-rock sources. A continuously operated DMS circuit test, conducted on +840 µm material, produced a concentrate grading 6.11% Li2O with ~50% lithium recovery. The circuit rejected 50% of the original mass to tailings, with only 8% lithium losses. Sensitivity analysis showed that minor changes (+/−0.05) in the DMS-specific gravity cut point resulted in significant changes to the mass rejected and to the concentrate grade produced; this may limit the feasibility and operability of the downstream grinding and flotation circuits. The results demonstrate the potential for DMS in the concentration of spodumene from the Hidden Lake pegmatites, and by extension, the potential for DMS in the concentration of spodumene from other hard-rock occurrences.

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Surface features and flotation behaviors of spodumene as influenced by acid and alkali treatments

Cited by 27 publications

References 29 publications

Molecular Design and Spodumene Flotation—A Review

Molecular Design and Spodumene Flotation—A Review

Ultrasonic pretreatment of spodumene with different size fractions and its influence on flotation

The Recovery and Concentration of Spodumene Using Dense Media Separation

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