矿产保护与利用2025，Vol.45Issue(1)：70-76,7.DOI:10.13779/j.cnki.issn1001-0076.2024.08.007
萝北某石墨尾矿提取石墨制备石墨烯实验研究
Experiment Study on Preparation of Graphene by Extracting Graphite from Graphite Tailings in Luobei
摘要
Abstract
Graphene shows 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 demonstrated that after subjecting ground graphite tailings particles with d50 of approximately 2.5 µm to 6 min ultrasonic exfoliation treatment followed by graphite enrichment through gravitational settlement,the resulting graphite microflakes exhibited a carbon content as high as 9.72%with a graphite recovery rate of 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.关键词
石墨尾矿/超声剥离/重力沉降/石墨微纳米片/高压微射流均质机/石墨烯Key words
graphite tailings/ultrasonic exfoliation/gravitational settlement/graphite nano/microsheets/high pressure microjet homogenizer/graphene分类
矿山工程引用本文复制引用
孟凡娜,张海军,张晓臣,阚侃..萝北某石墨尾矿提取石墨制备石墨烯实验研究[J].矿产保护与利用,2025,45(1):70-76,7.基金项目
黑龙江省重点研发计划项目(2024ZX06A04) （2024ZX06A04）
黑龙江省属本科高校基本科研业务费项目(2024-KYYWF-1078) （2024-KYYWF-1078）
黑龙江省科学院重点研发计划项目(KY2024GJD03) （KY2024GJD03）
黑龙江省省属科研院所科研业务费项目(CZKYF2024-1-B039,CZKYF2025-1-B032) （CZKYF2024-1-B039,CZKYF2025-1-B032）
