The process
Gypsum is calcined in kettles or flash calciners and the plaster moved by air slides. The calciner exhaust carries fine gypsum dust at temperature, and air slide blowers aerate the plaster on the way to the silos and packers.
The gas
Clean air at elevated temperature from a dryer, oven or cooling duty. The selection is made at the hot density, with the shaft and bearings arranged for continuous hot running.
Fans in this process
| Duty | What it does here | Type usually selected |
|---|---|---|
| Air Slide Blower | Supplies low pressure aeration air to the fabric of an air slide, fluidising cement, raw meal or gypsum so it flows down the slide.. | Backward curved and radial tipped |
| Hot Air Fan | Circulates or supplies air at elevated temperature to a dryer, oven or kiln. | Backward curved and backward inclined |
| Dust Collector Fan | The fan behind a bag filter, cyclone or multiclone on a dust extraction system. | Backward inclined and radial tipped |
| Bag Filter Fan | Pulls the process gas through the filter bags and discharges the cleaned gas to the stack. | Backward curved and radial tipped |
| ID Fan | Sits at the outlet of a boiler, kiln or furnace and draws the flue gas through the plant to the stack. | Backward curved, backward inclined and radial tipped |
Industries
Related processes
Waste Heat Recovery BoilersHot Air GeneratorsCement Preheater KilnsVertical Roller Raw MillsBall Mill Raw GrindingCement Grinding MillsClinker Grate CoolersCement Plant Coal MillsCement Packing and DispatchRotary Lime KilnsVertical Shaft Lime KilnsCeramic Body Spray DryersFood and Dairy Spray DryersRotary DryersFluid Bed Dryers and CoolersBelt and Tray Dryers