Abstract

Air was injected close to the standpipe inlet to control the particle flow rate from a hopper, and the relationships between the particle flow rate, the aeration rate, the particle diameter and the hopper angle were examined. A semi-theoretical method is presented to calculate the aeration rate at the point where discharge stops. Using the calculated aeration rate, an estimation method for the mass flow rate of a granular material with air injection is also presented, and compared with the experimental results.

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