Preparation and Characterization of Super Pure Coal

Industrial washing oil as solvent, super pure coal was extracted and prepared from raw coal using heat extraction technology. The structures of raw coal and super pure coal were characterized by thermogravimetry and Fu Liye infrared spectrum. The results showed that the heat extraction rate of super pure coal was decreased with the increasing of coalification degree. The ash of raw coal which were silicate and alumina can be concentrated by heat extraction technology into coal residue and the mixtures of various structure were mainly composed of aromatic hydrocarbons also can be extracted effectively. With the production capacity of China's iron and steel industry continues to expand, the amount of coke continued to rise. Coking process is current still in coking coal (coking coal, fat coal, fat gas coal, gas coal, 1/3 coking coal, lean coal, etc.). Although coking coal is the full range in our country, it is a relatively small species, especially the quality of coking coal is scarce varieties. It is mainly distributed in the Permian and Carboniferous, Permian coal-bearing strata in Southern China. In the international market coking coal supply is tight, and the foreign monopoly on coking coal trend is clearly.