Abstract
The following article describes how it is possible to discharge bulk materials from silo bins by suitable constructive measures of the bin bottom, even without the aid of mechanical discharging devices. The proper design of hopper surfaces is particularly important; they must be smooth and steep enough to effect mass flow. In rectangular and square bins the hopper surfaces must be arranged in such a way that they always intersect only with a vertical wall surface. The best flow-promoting measure is the loosening of the bulk material in the lower region of the silo bin. The hopper bottom constructions described here have been specially developed for this purpose. However, it is to be expected that in the future further ingenious hopper constructions will be invented to facilitate the discharge of difficult-flowing bulk materials.
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