Large-scale graphene preparation process

Abstract

The invention discloses a large-scale graphene preparation process in the technical field of graphite preparation, which comprises the following step: 1, oxidizing graphite powder by concentrated sulfuric acid and potassium permanganate to obtain graphite oxide, and carrying out vacuum drying on the prepared graphite oxide. Through the arrangement of a grinding motor, a grinding shaft, a first grinding roller, a grinding groove body, a fixing plate, a U-shaped filtering plate, a collecting hopper, a T-shaped frame, a conveying pipe, a communicating pipe, a conveying motor, a conveying shaft, aconveying blade, an aggregate bin, a driving gear, a follow-up fluted disc and a linkage rod, grinding, screening and regrinding are automatically completed in one grinding device, the working process is closely related, separate operation is not needed, the time of manual transfer operation is saved, the working efficiency is improved, and the working progress of graphene preparation is guaranteed.

Description

technical field [0001] The invention relates to the technical field of graphite preparation, in particular to a large-scale graphene preparation process. Background technique [0002] Graphene is a single-layer graphite sheet with a two-dimensional ordered structure that exists alone, and graphene oxide is an oxide of graphene. [0003] Some of the invention cases of graphene preparation process are disclosed in the prior art. The Chinese patent application number of the invention patent is 201810568818.1, which discloses a large-scale graphene preparation process, including the following steps: using natural flake graphite or artificial graphite as raw material, First add an oxidant to carry out oxidation reaction to prepare graphite oxide, then add an intercalation agent to carry out intercalation reaction, after the intercalation reaction is completed, filter the reaction solution to obtain dried intercalation graphite; use grinding equipment to prepare the prepared dry ...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of large-scale graphene preparation process, to solve the problem in the prior art that in the process of preparing graphene in the above-mentioned background technology, the fineness of graphite oxide particles obtained by grinding graphite oxide exists. Many particles with unsatisfactory particle size need to be grinded in large quantities to produce graphite oxide that meets the ideal fineness. Therefore, it is necessary for the staff to grind the graphite oxide particles that are not satisfied with the graphite oxide after a single grinding, and then screen through the screening process. The entire operation process requires manual transfer, which is cumbersome and the work efficiency is too low, which affects the preparation progress of the entire preparation process

Images