coal grinding
Hello I want to have your experiences and comments for coal grinding in ball are using 3 types of coal in different percentages and different grindability hardgrove y´ example Type A 30% HGI=49 Type B 35% HGI=55 Type C 35% HGI=36 With this my´xture we are aiming to have certay´n amount calori and sulphur are not taking account of grindability factor