Surface dissolution of spodumene and its role in the flotation concentration of a spodumene ore

Wang, Yuhua; Zhu, Guangli; Zhang, Lei; Lu, Dongfang; Wang, Liguang; Zhao, Yuehao

doi:10.1016/j.mineng.2018.06.002

Cited by 28 publications

(7 citation statements)

References 11 publications

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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%

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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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Section: Resultsmentioning

confidence: 99%

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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“…Therefore, it is obvious that the beneficiation of these tailings is important to mitigate environmental impact and possibly lower the production cost. From their geological origin, spodumene is found in nature in pegmatite deposits, which comprises quartz, feldspars and micas as gangue minerals (Aylmore et al, 2018;Keliber, 2018;Wang et al, 2018). Accordingly, these minerals will be present in flotation tailings from spodumene concentration and a search for their beneficiation agrees with the concept of zero waste and the sustainable reuse of resource (Burlakovs et al, 2018;Esmaeilian et al, 2018;Karhu et al, 2018;Veleva et al, 2017).…”

Section: Introductionmentioning

confidence: 70%

Spodumene tailings for porcelain and structural materials: Effect of temperature (1050–1200 °C) on the sintering and properties

Lemougna

Yliniemi

Ismailov

et al. 2019

Minerals Engineering

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The use of industrial by-products as substitute to conventional natural resources in ceramic production is of interest from an environment preservation and solid wastes management. This paper deals with the recycling of tailings from spodumene concentration during lithium production (Quartz Feldspar Sand; QFS), for the production of porcelain and structural materials. The QFS obtained from spodumene processing consisted mainly of quartz, albite, microcline with traces of muscovite. Mixtures of QFS and standard porcelain ingredients were sintered at 1050-1200 °C at 50 °C intervals and their properties were compared with a conventional porcelain composition prepared under the same conditions. Phase composition was assessed by XRD analysis using Rietveld refinement. Tests such as water absorption, apparent density, sintering shrinkage, compressive and flexural strength were used for physical comparison. The results showed that higher densification was achieved at 1200 °C, with a drastic reduction of water absorption below 1%. A compressive strength of 40 MPa was obtained at 1050 °C in the composition made of 50 wt% QFS and 50 wt% kaolin, increasing to 85 MPa at 1100°C. The strength increase was attributed to better glassy phase formation and mullite growth. The QFS was found to contain no hazardous elements and showed promising sintering results, indicating its high suitability to substitute conventional resources in the production of ceramic materials.

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“…While a little change in the content of Fe 3+ , Al 3+ , or Mn 2+ ions took place in the pulp. According to Chen and Tao (2004), Zhu et al (2011), andWang et al (2018), Fe 2+ /Fe 3+ , Ca 2+ , Fig. 6.…”

Section: Buffering Of Pulp Ph and Its Relationship With Cation Dissolutionsmentioning

confidence: 96%

Buffering of pulp pH and its influence on process water chemistry during iron ore flotation

Tang¹,

Xiao²

2021

Physicochem. Probl. Miner. Process.

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It is inevitable for the occurrences of pulp pH buffering during pH control in flotation as the minerals with acidic/alkali properties tend to interact with pH modifiers and restore the pulp pH. This could result in some disturbing ions and alter the water/pulp chemistry. The purpose of this study was to identify the influences of pulp pH buffering on process water chemistry through a series of pH buffering tests, bench flotation experiments, ore dissolution tests, zeta potential measurement, and Xray diffraction (XRD) analysis. The built-up and distribution of the dominant cations in the process water from different locations in an industrial flotation system of the iron ore were analyzed and recorded by Inductively Coupled Plasma-Optical Emission (ICP-OES) at a period of about six months when the operations were stable. The data showed that a near five-minute buffer of pulp pH at a range from near 7.9 to 8.9 occurred before it reached a stable value. At this period, the dissolution of Ca/Mg from the iron ore was dominant. And, the pulp pH at a lower value tended to induce more dissolved Ca 2+ and Mg 2+ ions. These divalent cations seem to have different influences on the flotation properties of iron oxides at the same concentrations, indicating a positive effect on the recovery of iron oxides with the presence of Mg 2+ ions but an opposite effect if Ca 2+ ions occurred. The presence of sulfate, however, tended to restore the floatability of silicate depressed by Ca 2+ ions.

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Surface dissolution of spodumene and its role in the flotation concentration of a spodumene ore

Cited by 28 publications

References 11 publications

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

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

Spodumene tailings for porcelain and structural materials: Effect of temperature (1050–1200 °C) on the sintering and properties

Buffering of pulp pH and its influence on process water chemistry during iron ore flotation

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Surface dissolution of spodumene and its role in the flotation concentration of a spodumene ore

Cited by 28 publications

References 11 publications

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

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

Spodumene tailings for porcelain and structural materials: Effect of temperature (1050–1200 °C) on the sintering and properties

Buffering of pulp pH and its influence on process water chemistry during iron ore flotation

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Spodumene tailings for porcelain and structural materials: Effect of temperature (1050–1200 °C) on the sintering and properties