Abstract: A control system (44, 112) particularly adapted to be cooperatively associated with a mill (10) and in particular a roller mill (10) of the type that is operative to effectuate the grinding and/or pulverization of solid materials. When so employed, the subject control system (44, 112) enables the roller mill (10) to be operated over a wide range of varying levels of output of pulverized material, while yet ensuring that both the proper air/solids ratio and the desired degree of fineness of the pulverized material are being maintained. To achieve this result, the subject control system (44, 112) is operatively connected in circuit relation with the feed means (12) that supplies to the roller mill (10) the material that is to be pulverized therein, with the drive means (20, 22) through which the mill (10) is driven, with the classifier means (38) that effects a separation of the pulverized material according to fineness, and with the means which receives the output from the roller mill (10).

Abstract: A high efficiency separator system (10) operative for processing material that includes grinding means (12), high efficiency separator means (14), dust collector measn (16) and fan means (18) all of which are interconnected in a predefined flow path. In accord with the nature of the construction of the subject high efficiency separator system (10), the grinding means (12) is connected to the high efficiency separator means (14) and the high efficiency separator means (14) in turn is interconnected to both the grinding means (12) and the dust collector means (16) whereby the mode of operation of the subject system (10) is such that the material supplied to the system (10) is ground in the grinding means (12), is classified on the basis of particle size in the high efficiency separator means (14), and ultimately is discharged from the dust collector means (16) in the form of finished product which consists of material that has been ground to a predetermined particle size.