Abstract
Storage of the 10cm diameter bored four air-blowing nozzles (diameter 1mm) in contact with a wall in order to discharge the powder from the bottom was done. The air in the storage is expected to blow away the powder from the wall near the nozzle position and to break the bridge by fluidization.
Some experiments were performed to investigate the characteristics of mass flow rate of discharge by various air flow rates, heights of the packing bed and heights of the nozzle position using talk powder. As a result, it was shown that 1) the discharge of powder could not occur if the height of the packing bed was lower than a certain value which was higher than the nozzle positron, 2) the mass flow rate of discharge promoted with the height of the packing bed, and 3) the mass flow rate of discharge experienced little change due to the air flow rate.
