▎ 摘　　要

NOVELTY - Device comprises a mixing chamber (1), a grinding chamber (17) and a calcination chamber (13), where the mixing chamber, the grinding chamber and the calcination chamber are provided in order from top to bottom. The mixing chamber is fixedly connected, and has a tapered column shape. The grinding chamber has a cylindrical shape, where the calcination chamber has a rectangular parallelepiped shape. A cavity is opened inside the mixing chamber, where a discharge port (2) is arranged on the top shell of the mixing chamber. USE - Device for preparing graphene microchips. ADVANTAGE - The device prepares graphene microchip in batches at low cost with yield and improved size. DETAILED DESCRIPTION - Device comprises a mixing chamber (1), a grinding chamber (17) and a calcination chamber (13), where the mixing chamber, the grinding chamber and the calcination chamber are provided in order from top to bottom. The mixing chamber is fixedly connected, and has a tapered column shape. The grinding chamber has a cylindrical shape, where the calcination chamber has a rectangular parallelepiped shape. A cavity is opened inside the mixing chamber, where a discharge port (2) is arranged on the top shell of the mixing chamber. A jacket is enclosed on the outer side wall of the mixing chamber. The upper portion of the jacket is sealed at the top end of the mixing chamber, where the lower portion is sealed at the top of the grinding chamber. Another cavity is opened inside the grinding chamber, where a rotating shaft (3) penetrates the former cavity to the bottom of the latter cavity at the center of the top of the mixing chamber. A third cavity is opened inside the calcining chamber (10), where a calciner (14) is placed in the third cavity. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the device for preparing graphene microchips. Mixing chamber (1) Discharge port (2) Rotating shaft (3) Calcining chamber (10) Calcination chamber (13) Calciner (14) Grinding chamber (17)