Novel graphite round boat for tubular furnace graphite purification

The novel graphite round boat comprises a boat body, inner end covers are arranged at the left end and the right end of the boat body, and outer end covers are arranged on the surfaces of the inner end covers; the inner end cover comprises a high-density cover body, and a plurality of inner exhaust micropores are formed in the end face of the high-density cover body. The outer end cover comprises an ultra-high-density cover body, the ultra-high-density cover body is arranged on the surface of the high-density cover body in a threaded and sleeving mode, and a plurality of outer exhaust micropores are formed in the threaded connection position. The graphite round boat has the advantage of high production purity, and solves the problems that gaseous impurities in the round boat are inconvenient to fully discharge, the purification purity of graphite powder is reduced, the production cost is increased, the production stability is influenced, the production efficiency is high and the like in the use process of the