A new method for pre-enrichment of gallium and lithium based on mode of occurrence in coal gangue from Antaibao surface mine, Shanxi Province, China

Dai, Shiqi; Sun, Fengshuai; Wang, Lei; Wang, Lanhao; Zhang, Rui; Guo, Han; Xing, Yaowen; Gui, Xiahui

doi:10.1016/j.jclepro.2023.138968

Cited by 10 publications

(3 citation statements)

References 25 publications

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“…CG is a prevalent CSWM that generally comprises soil-like constituents, including silicates, oxides, and carbonates [51,52], in addition to substantial quantities of organic matter, N, P, and K. CG is an acidic mineral, and as the amount of CH increases, the EC and pH values decrease. The particle size of coal gangue is relatively large, so the field capacity and porosity of the AS exhibit a decline as the CG content increases.…”

Section: Discussionmentioning

confidence: 99%

Physicochemical Properties and Planting Performance of Artificial Soil Developed from Multiple Coal-Based Solid Waste Materials

Shu,

Wang,

2024

Sustainability

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Using coal-based solid waste (CSWM) to develop artificial soil (AS) can solve the shortage of planting soil in mine ecological restoration and realize the resource utilization of solid waste, which is a very promising research direction. This study used three common CSWM, coal gangue (CG), fly ash (FA), and desulfurization gypsum (DG), to prepare AS. The physicochemical properties of AS, such as bulk density, specific gravity, porosity, field water capacity, available nutrient content, pH value and EC value, were studied. Simultaneously, Elymus dahuricus was utilized in pot experiments to explore the planting performance of AS. Results show that, as the CG content decreased, the specific gravity of AS decreased, and the porosity increased. Both field capacity and saturation capacity demonstrated a notable upward trend. The results of pot experiments showed that plant growth was best when the CG content in AS was 80% and the FA and DG content was 20%. In comparison to the control group consisting of pure CG, the plant biomass in the optimal experimental group exhibited a significant increase of 20.48%. This study verified the feasibility of making AS by combining various CSWM, and provides a new pathway for ecological restoration and resource utilization in mines.

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Section: Discussionmentioning

confidence: 99%

Physicochemical Properties and Planting Performance of Artificial Soil Developed from Multiple Coal-Based Solid Waste Materials

Shu,

Wang,

2024

Sustainability

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“…The demand for Li and Ga has been increasing dramatically in recent years with the widespread use of strategic metals, but the current supply of Li and Ga is limited due to the high cost of mining and low abundance, which has led to the need to try to recover Li and Ga from different substances. − It is found that the contents of Li and Ga in CG are abnormally high; therefore, the recovery of Li and Ga from CG provides a new way for the comprehensive utilization of CG. , In order to achieve the maximum utilization of Li and Ga in the CG, the occurrence mode of Li and Ga in coal and its byproducts has been studied. − The study of the coal in the Urinary Basin found that 96.6–99.4% of Li existed in the form of silicates and aluminosilicates, and it was speculated that Li may exist in Illite and kaolinite . In the coal of Pingshuo, the contents of Li and Ga in the inorganic components were significantly higher than those in the organic components, and the main contents of Li and Ga were in the silicates of coal samples .…”

Section: Introductionmentioning

confidence: 99%

“… 12 − 14 It is found that the contents of Li and Ga in CG are abnormally high; therefore, the recovery of Li and Ga from CG provides a new way for the comprehensive utilization of CG. 15 , 16 In order to achieve the maximum utilization of Li and Ga in the CG, the occurrence mode of Li and Ga in coal and its byproducts has been studied. 17 − 19 The study of the coal in the Urinary Basin found that 96.6–99.4% of Li existed in the form of silicates and aluminosilicates, and it was speculated that Li may exist in Illite and kaolinite.…”

Section: Introductionmentioning

confidence: 99%

Separation and Recovery of Valuable Carbon Components and Li/Ga Metals in Coal Gangue by Using a Flotation Flowsheet

Fang,

Xia,

et al. 2024

ACS Omega

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Coal gangue (CG), an industrial solid waste with high contents of Li and Ga, has attracted the attention of researchers. However, the utilization of CG remains an economic challenge. Pre-enrichment of Li and Ga by flotation was carried out with a view to improving the comprehensive utilization of CG. Mineral composition, time-of-flight secondary ion mass spectrometry (TOF-SIMS), and elemental composition were used to investigate the embeddedness of each mineral and the mode of elemental occurrence in the CG. The results showed that the main mineral compositions of the CG were kaolinite, quartz, and pyrite. Li and Ga were mainly associated with kaolinite and other clay minerals. Li and Ga had a high correlation with Al 2 O 3 and SiO 2 , while Li and Ga were highly correlated with SiO 2 /Al 2 O 3 , indicating that Li and Ga may be associated with one or more high-alumina minerals. In addition, flotation tests proved that synergistic sorting of ash impurities and valuable components from the CG was a cost-effective method. The ash content of the final product was increased by 3% under the process of prediscarding concentrate− dissociation−secondary flotation, and the contents of Li and Ga in the final product were also slightly enriched, and the recovery rate of the carrier minerals of Li and Ga can reach 66.1%.

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Advances in studies investigating the comprehensive utilization of coal gangue: a visualization analysis based on CiteSpace

Lin,

Si,

Han

et al. 2024

Discov Appl Sci

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A new method for pre-enrichment of gallium and lithium based on mode of occurrence in coal gangue from Antaibao surface mine, Shanxi Province, China

Cited by 10 publications

References 25 publications

Physicochemical Properties and Planting Performance of Artificial Soil Developed from Multiple Coal-Based Solid Waste Materials

Physicochemical Properties and Planting Performance of Artificial Soil Developed from Multiple Coal-Based Solid Waste Materials

Separation and Recovery of Valuable Carbon Components and Li/Ga Metals in Coal Gangue by Using a Flotation Flowsheet

Advances in studies investigating the comprehensive utilization of coal gangue: a visualization analysis based on CiteSpace

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