... has two kinds : dry method process and cement kiln.Classified by the tube diameter of the rotary kiln, there are c1.6m, c1.8m ... , c2.1m, c2.6m, c3.0m, etc. models. And by length of ... the body, there are 25m, 30m, 40m, 45m,ect.models. ceramic rotary kiln/coal equipment