primary air flow to coal mills -
primary air flow to coal ball mills. bhel ball tube millsBINQ Mining, For a Ball tube mill a direct relation exists between the primary air flow entering the mill and the pulverized fuel, noise Free Quote
Pulverizer - Wikipedia
The tube mill output (responding to boiler load demand) is controlled by regulating the primary air-flow. This regulation, by sweeping pulverized fuel from the mill, is very fast; comparable with oil firing response, but needs the coal level to be maintained in the mill.