The graphitization heat treatment of the calcined samples as the raw material was studied, and these samples were obtained by the process treatment of roasting kneading, shaping and baking. The organization structure and physicochemical properties of these samples before and after graphitization heat treatment were investigated. The results showed that: after the treatment of 2800 ℃, the organizational structure of samples conversion of orderly three-dimensional structure from disordered two-dimensional, and these samples have the characterization of graphite structure, and the graphitization degree reached 62.79%. Room-temperature resistivity increases with the graphitization degree decreases, along with the increase of bulk density decreased, the flexural strength and compressive strength decreased significantly, reduced by 50%.