One of the most important orientations of preparation of high-performance graphite materials is to seek carbonaceous materials which have the properties of wide source

low cost and high purity. The influence of coal particle size and catalyst on the graphitization process of ultrafine Shenfu coal at 2500℃ under inert atmosphere was discussed. The degree of graphitization of the products was analyzed with XRD and Raman spectroscopy. The Shenfu coal could change to ultrafine graphite powder at 2500℃ under inert atmosphere

and the degree of graphitization of ultrafine graphite powder increased with decreasing particle size of the Shenfu coal. Furthermore

graphitization of the Shenfu coal with boric acid or ferric chloride as catalyst was compared

and the catalytic activity of boric acid was higher than that of ferric chloride. When the particle size (D90) of the Shenfu coal was smaller than 20 μm

the degree of graphitizations of obtained ultrafine graphite powder from the Shenfu coal was 80.35% by using boric acid as catalyst.