Abstract
Effect of difference degree of low- and high- rank coal thermoplastic temperature on fine coke generation under drum test was investigated. When the thermoplastic temperature of low- and high- rank coal was very different, decreasing of DI^<150>_<15> (increasing of -15mm fine generation) was remarkable. Increasing of 6mm-15mm and 0.5mm-6mm fine generations were depended on increase of crack density and low-circularity pores collectively.