Experiment Study on Preparation of Graphene by Extracting Graphite from Graphite Tailings in Luobei

MENG Fanna; ZHANG Haijun; ZHANG Xiaochen; KAN Kan

doi:10.13779/j.cnki.issn1001-0076.2024.08.007

2025 Vol. 45, No. 1

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Article navigation > Conservation and Utilization of Mineral Resources > 2025 > 45(1): 70-76

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MENG Fanna, ZHANG Haijun, ZHANG Xiaochen, KAN Kan. Experiment Study on Preparation of Graphene by Extracting Graphite from Graphite Tailings in Luobei[J]. Conservation and Utilization of Mineral Resources, 2025, 45(1): 70-76. doi: 10.13779/j.cnki.issn1001-0076.2024.08.007

Citation:

MENG Fanna, ZHANG Haijun, ZHANG Xiaochen, KAN Kan. Experiment Study on Preparation of Graphene by Extracting Graphite from Graphite Tailings in Luobei[J]. Conservation and Utilization of Mineral Resources, 2025, 45(1): 70-76. doi: 10.13779/j.cnki.issn1001-0076.2024.08.007

Experiment Study on Preparation of Graphene by Extracting Graphite from Graphite Tailings in Luobei

1.
School of Mining Engineering, Heilongjiang University of Science Technology, Harbin 150022, Heilongjiang, China
2.
Institute for Advanced Technology of Heilongjiang Academy of Sciences, Harbin 150001, Heilongjiang, China

More Information

Corresponding author: ZHANG Haijun, 190725318@qq.com

Received Date: 20 February 2024

Publish Date: 15 February 2025

Abstract

Abstract

Graphene showns promising prospects due to its unique structural characteristics and excellent physicochemical properties. In this paper, graphite tailings in Luobei were taken as the research object, and graphite nano/microsheets were extracted from graphite tailings by grinding, ultrasound and gravitational settlement, followed by purification and exfoliation to prepare graphene. The results showed that the tailings particles with d₅₀ of about 2.5µm were obtained by grinding, ultrasonic stripping was performed for 6 min, and the graphite was enriched by gravitational settlement. The yield of recycled graphite microsheets was 9.72%, and the recovery rate was 80%. After purification, graphite nano/microsheets were obtained with fixed carbon content of 98.1% and about 20 layers. Finally, the high pressure microjet homogenizer was used to exfoliate and prepare multi−layer graphene. The ratio of graphite nano/microsheets, water and dispersant was 0.2 mg∶1 mL∶0.001 mg, and the pressure of the high pressure microjet homogenizer was 80 Mpa. After 25 high−pressure dispersion cycles, the thickness of the graphene sheets was less than 10 layers and the diameter of the sheets was more than 3 μm to produce graphene with high crystal quality. The preparation of graphene from graphite tailings not only expands the range of graphene raw materials but also realizes the resource utilization of graphite tailings.
- graphite tailings /
- ultrasonic exfoliation /
- gravitational settlement /
- graphite nano/microsheets /
- high pressure microjet homogenizer /
- graphene

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References

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