▎ 摘　　要

NOVELTY - The utility model claims a device for preparing graphene by using sludge, relating to the field of environment-friendly device, aiming at the problem that the generated waste gas generated in the process of preparing graphene in the current sludge will harm the health of the operator; the invention claims the following solution, comprising a reaction furnace body, the bottom end of the inner wall of the reaction furnace body is rotatably provided with a central main shaft; the top end of the central main shaft passes through the upper surface of the reaction furnace body; and the central main shaft is symmetrically distributed and fixedly installed with a cross fixing frame; two ends of the two cross fixing frames are symmetrically distributed and fixedly installed with a scraping plate matched with the inner wall of the reaction furnace body; the central main shaft is fixedly installed with a spiral blade; the middle position of the two cross fixing frame is symmetrically distributed fixedly installed with a connecting rod; each of the connecting rod is uniformly distributed and rotatably installed with a movable sleeve ring. The utility model has novel structure, simple and fast operation, good use effect, high practicability, and it is suitable for popularization.