Rongge XiaoChina University of Geosciences (Beijing), China
Prof. Xiao takes up teaching and researches in mineral deposits and geochemistry of ore deposit. He is now responsible for China University of Geosciences (Beijing) mining workshop, Peking University HSBC Business School mining workshop, and Mining Investment Evaluation special training course held by China Mining Association mining workshop. He acted as leaders in programs of National Natural Science Foundation of China, basic research programs of Technology Division of Ministry of Land and Resources, national geological surveys, geochemistry laboratory projects of CAS, projects of Ministry of Land and Resources of Henan Province and Liaoning Province, etc.
Prof. Xiao has been working in fields of geological teaching and researching for around 40 years, and published dozens of academic works and papers. He obtained several times of Science and Technology Award issued by Ministry of Land and Resources. His representative book contains Flake graphite deposit in Northeast China, Phosphor Deposit of China, Geochemistry on Rock and Mineral Deposit, Regional Metallogenic Model of Baron in Liaodong Area, Occurrence Theory of Molybdenum Deposit, Mesozoic-Cenozoic Geology and Minerals in Yunnan Province, Mineral Resources Science.
Title：Graphite Deposit and minerals
Symposium H Graphene Resource Cooperation and Utilization
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Abstract
Abstract: Graphene has two different type: one is single or multiple layer graphene thin film, the other is multiple layer graphene microchip. Graphene development can be divided to two stages: 1, producing single or multiple borehole graphene. 2, netting the graphene. Now the development is in the first stage.
• Until now, there are two methods for producing single or multiple borehole graphene:
• ❶Methods like mechanical exfoliation, GO, and CVD have problems in structure control and manufacturing, which limits its application development in chemical, esp. catalytic material. ❷ Manufacturing graphene by synthetic Sic.
• Modification on natural material should be better than synthetic materials, but it’s vital to have an exact research and understanding of the performance. This paper will introduce various types of graphite deposit and minerals, aims to discuss which kind is suitable for producing graphene.
• Types of graphite deposit include sedimentary metamorphic and magmatic hydrothermal, the former is more important. Sedimentary metamorphic can be categorized into three types: deep metamorphic type, shallow metamorphic type and contact metamorphic type. (Table 1)
• Structures of various graphite deposit and minerals are different. Deep metamorphic graphite deposit is mainly coarse flake graphite, with size of 0.05-1mm. Shallow metamorphic graphite deposit is mainly fine and micro flake graphite, with size of 0.02-0.05mm. Contact metamorphic is mainly amorphous graphite, with size of 1um±(Table 2).
• Coarse and micro flake graphite are suitable for producing graphene. However, graphite from different deposit owns different product phase, we should make separate researches for these graphite.
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