No.17 Grindability on the blend of subbitutuminous and bituminous coal 3

Abstract

Low HGI coal and high HGI coal were blended, and their pulverization behaviors were investigated with HGI testing mill. The objectives of this study are to predict pulverization behaviors such as mill power, the size distribution of pulverized coal at mill outlet and so forth based on the aspects of each individual coal. When low HGI coal and high HGI coal were blended at equal rate, the pulverization behaviors of the blended coal were more greatly influenced by low HGI coal.