Storing The Dust
After the material has been removed and transported from the dust collector, a storage facility must be used to permit disposal in efficient quantities. Elevated storage tanks or silos are normally used to permit loading of dry dust into enclosed trucks underneath.
For wet dust collectors, the accumulation area is a settling pond. A settling pond may require considerable space. Since the storage area can only be decanted and dried out during the dry season, two settling ponds are usually needed. Also, most collected materials have very fine components that may seal the pond and prevent percolation.
Removing Dust from Hopper
Collected dust must be removed continuously (while the dust collector is operating), Rotary air locks or Double dump valves should be used to maintain a positive air seal. If the material in the hopper has a bridging tendency, equipment such as bin vibrators, rappers, or air jets should be used.
Conveying The Dust
After the dust has been removed from the collector, it must be transported to a central point for accumulation and ultimate disposal. Conveying of dust can be accomplished by the following methods:
- Use of screw conveyors
- Use of pneumatic conveying
- Use of air slides
- Use of Ash Conditioner/Pug mill to convey slurry