Abstract: A continuous grinding system for comminuting material in a liquid includes a grinding vessel and a rotating shaft carrying one or more mixing arms disposed within the vessel. A funnel-shaped housing and a cylindrical extension project into the vessel and the rotating shaft extends through the housing and the extension with the mixing arms being disposed beneath the extension. The rotating shaft also carries one or more radially projecting, angled impeller blades which are disposed within the extension. The blades may engage the extension in which event the extension may be separate from the housing or may terminate short of the inner wall of the extension in which event the extension may be secured to the housing. The cylindrical extension in a modified form of the invention extends into the housing a distance equalling from about 10% to about 75% of the depth thereof and preferably from about 50% to about 55%.

Abstract: A continuous grinding system for comminuting material in a liquid includes a grinding vessel and a rotating shaft carrying one or more mixing arms disposed within the vessel. A funnel-shaped housing and a cylindrical extension project into the vessel and the rotating shaft extends through the housing and the extension with the mixing arms being disposed beneath the extension. The rotating shaft also carries one or more radially projecting, angled impeller blades which are disposed within the extension. The blades may engage the extension in which event the extension may be separate from the housing or may terminate short of the inner wall of the extension in which event the extension may be secured to the housing.

Abstract: A continuous dry grinder for grinding particulate material with the assistance of grinding elements includes a comminuting vessel which contains the grinding elements and receives material to be ground through an upper feed chute and discharges the ground material through a radially mounted screen, valve and discharge chute. A motor driven agitator assembly is disposed within the vessel and includes alternating radially projected agitating arms and diverter discs mounted on a rotating agitator shaft. The agitating arms are L-shaped and have their short legs alternately projecting toward the top and bottom of the vessel.

Abstract: An agitated-media mill of the batch, circulation, or continuous types in which the elements of a comminuting media randomly interact in response to an agitator having motion relative to the comminuting media to comminute the process mixture. In one embodiment the agitated-media mill includes a baffle adjacent the inner wall of the comminuting vessel and arranged transversely with respect to the flow of the process mixture. The baffle redirects the comminuting elements to increase the random interaction of the elements throughout the vessel and also opposes the solid body rotation of the process mixture to provide improved comminution of the mixture. The cross-sectional shape and general configuration of the baffle is chosen with respect to, the particular type and application of the agitated-media will aid in complete comminution of the process mixture and to retard accumulation of particles on the baffle and adjacent surfaces.