▎ 摘　　要

NOVELTY - The utility model claims a graphene oxide pre-expansion furnace, belonging to the graphene oxide thermal reduction field, wherein it adopts sealed horizontal pre-expansion furnace structure, comprising a furnace body; a group of rotating furnace bracket and a heating ring bracket set between the rotating furnace bracket; two ends respectively the furnace body are connected on the rotating furnace bracket in a rotating way; the middle part outer side of the furnace body is sleeved with a heating coil; and the furnace body and the heating coil are separated design; the heating coil is fixedly connected on the heating ring bracket; the outer part of the heating coil is provided with an insulating layer; one end of the furnace body is provided with a material cover; the material cover is detachably connected with the furnace body; The thermal expansion furnace of the utility model firstly pre-expands the graphene oxide for one time, releasing a part of oxygen group in the graphene oxide, so as to avoid the thermal reduction process of graphene oxide expansion splashing problem.