PRESSURIZED CRUCIBLE FOR PREPARING GRAPHITE

摘要

The present invention relates to a pressurizing crucible which can be used to prepare graphite by applying vertical pressure, a furnace comprising the crucible to prepare graphite, and a preparation method of graphite using the crucible. The crucible of the present invention can effectively pressurize raw materials and can be used to prepare graphite from raw materials with high efficiency. Further, the crucible of the present invention can be used for shrinking or carbonization and/or to graphitization through heat treatment by inductive heating, and thus can substantially reduce graphitization temperature by improving heating efficiency in comparison to a conventional method while reducing processing costs. In addition, the crucible enables the furnace to rapidly operate, precisely control temperature, and can be used to design various furnaces while having excellent barrier properties from contaminant substances and being environment-friendly. The pressurizing crucible comprises: (a) a crucible body which has a screw thread at the entire or in part of an internal flank of an opening, wherein the screw thread combines with a crucible cap; and (b) a crucible cap which includes a screw thread formed at the exterior, wherein the screw thread combines with the internal flank of the opening of the crucible body.