Abstract: Gravity flow blending system for granular materials by use of novel internal handling means which provides for a continuous, uniform withdrawal of material from a multitude of locations in a large capacity bin. The invention utilizes basic principles of solids rheology to provide for a natural internal self-regulation which makes it possible to use this system for a wide range of material discharge rates and granular material types.

Abstract: Method and apparatus are disclosed for feeding and distributing, in a container of varying configuration, bulk materials comprising: inlet positioned near the top of said container; at least partially radially-compartmented rotor positioned below; and material-deflecting stator fixedly positioned around the periphery of said rotor and mounted for permitting preselected orientation of said stator with respect to said rotor.

Abstract: Apparatus is disclosed for blending free-flowing granular materials comprising: an outer chamber having walls which converge toward and terminate in outlet means at the base thereof; substantially vertically-positioned fenestrated blending tube means spaced above said outlet means having a plurality of entrance means therein; solid, conveying tube means extending substantially vertically through and coaxial within said blending tube means and defining an annular space therebetween; an entrainment zone positioned between said base of said conveying tube means and the base portion of said chamber; and gas inlet means positioned in said chamber to discharge gas upwardly into and through said entrainment zone toward the base inlet of said conveying tube means; the distance of the point of gas inlet discharge into said entrainment zone from said base of said chamber is defined by the equation:X .ltoreq. L - r Tan .alpha.