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  • 专利标题:   Grinding disc device for preparing graphene, has sealed kettle body with air inlet and discharging outlet, where inner part of kettle body is provided with rotating component for driving grinding disc component to rotate, stirring paddle located below lower grinding disc, and baffle.
  • 专利号:   CN114425470-A
  • 发明人:   ZHANG X, ZHAO Y, ZHANG J, RU Y, SONG Z, LI B, JIANG C, CHEN X, ZENG X, QI G, WANG X
  • 专利权人:   SINOPEC BEIJING RES INST CHEM IND, CHINA PETROLEUM CHEM CORP
  • 国际专利分类:   B02C007/08, B02C007/11, B02C007/12, C01B032/19
  • 专利详细信息:   CN114425470-A 03 May 2022 B02C-007/08 202262 Chinese
  • 申请详细信息:   CN114425470-A CN11091971 13 Oct 2020
  • 优先权号:   CN11091971

▎ 摘　　要

NOVELTY - The grinding disc device, has a sealed kettle body with an air inlet (13) and a discharging outlet (14). The inner part of the kettle body is provided with a grinding disc component and a rotating component for driving the grinding disc component to rotate. The grinding disc component comprises an upper grinding disc (31) and a lower grinding disc (32) provided with a feeding port. A stirring paddle (33) is set below the lower grinding disc. A baffle (36) is used for making the material flow into the feeding port. USE - Grinding disc device for preparing graphene (claimed). ADVANTAGE - The grinding disc component of the device is provided with the feed inlet through which materials flow into the grinding disc component, and the materials can be sucked into the grinding disc through the high-speed rotation of the grinding disc, so that the efficiency of the grinding disc can be improved. The grinding disc device has a stirring paddle and a baffle plate, where the stirring paddle and the baffle plate are beneficial to mixing of materials, so that the efficiency of the materials entering the grinding disc is further improved. The grinding disc device is simple in structure and convenient to use. The preparation method adopts supercritical carbon dioxide as solvent, and the process is green and environment-friendly without post-treatment. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a graphene having a carboxyl-modified group, where the number of graphene layers is less than or equal to10, and the ratio is not less than 30%, preferably 30-50%; and (2) a preparation method of the graphene, which involves mixing and grinding graphite powder and supercritical carbon dioxide by using the grinding disc device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic structural diagram of a grinding disc device. Magnetic force rotating component (2) Jacket (11) Kettle cover (12) Air inlet (13) Discharge outlet (14) Feeding port (15) Upper grinding disc (31) Lower grinding disc (32) Stirring paddle (33) Gap adjusting bolt (34) Baffle (35) Grinding disc support (36)