... blast stove: it is mainly used to provide heat source for the dryer, so that the dryer can ... bar, etc, this is the most economic applicable a provide heat way, in the stove with firewall, so ... 7, the big gear ring: the drive part provide the power, drive dryer body rotation, as the ... spiral dust collector: it especially designed for the big dust collection . For example, coal slurry, lignite, small ...