Abstract: Disclosed is a roller mill having two roller units disposed in a machine frame with each having one grinding roller rotatably mounted in two bearing jewels. The two grinding rollers are disposed mutually opposite each other and counter-rotatingly driven by a drive mechanism. A force-application system configured to generate a grinding force is coupled between the machine frame and at least one roller unit, wherein the grinding force is transmitted to the grinding rollers. The machine frame is composed of a plurality of frame parts, wherein for transmitting the grinding force a releasable and positive locking connection to two mutually compressed connection faces is provided between at least two interconnected frame parts, and/or between at least one frame part and one of the bearing jewels, wherein at least one of the two mutually compressed connection faces has a coating which generates a micro positive lock.

Abstract: The roller grinding mill according to the invention for comminuting brittle grinding stock substantially comprises a. at least one grinding roller which co-operates with a counter-face in such a manner that the grinding stock is comminuted between the grinding roller and the counter-face and b. a pressing system for applying a force to the grinding stock via the grinding roller, the pressing system having the following components: b1. at least one hydropneumatic store and b2. at least one dual-articulation actuating cylinder which is connected to the hydropneumatic store and which has pistons and a housing, the dual-articulation actuating cylinder having two pistons and a housing which acts as a coupling rod.

Abstract: The invention relates to an apparatus for classifying charge material, comprising a static classifier which has a ventilating base oriented obliquely to the vertical and traversed by classifying gas; an inlet opening for charging the charge material to the ventilating base; an outlet opening for the coarse material; a downstream dynamic classifier which comprises at least one rotor; and at least one outlet opening for the classifying gas laden with fine material. The ventilating base has a ratio of width to vertical height of at least 0.45, preferably of at least 0.6.

Abstract: The invention relates to a rotary tube mill and to a method of comminuting lumpy mill feed material, in which at least a first and a second grinding chamber as well as a co-rotating partition disposed between the grinding chambers are used. The material ground in the first grinding chamber is divided in the partition into first and second part-quantities of mill feed material, whereby at least a part of the second part-quantity of mill feed material proceeds into the second grinding chamber and at least the first part-quantity of the mill feed material is discharged separately from the tube mill.

Abstract: A discharge base for a chamber for the heat treatment of a material which is capable of separating fine fraction of the material from oversize fraction of the material. The discharge base has a plurality of conveyor elements which are movable to and fro for the discharge of the oversize fraction of the material. The discharge base is also provided with openings for separating out the fine fraction of the material.

Abstract: The invention relates to a cooler and to a method for cooling hot bulk material (2), wherein the hot bulk material is fed on a stationary aerating base through which cooling gas can flow and is transported by means of reciprocating conveyor elements disposed above the aerating base. In this case at least two groups of conveyor elements are used which are actuated jointly in the transport direction and separately from one another against the transport direction.