Abstract: A cooler for cooling bulk material such as cement clinker may include a stationary aeration grate that is for receiving the bulk material is passably by a flow of cooling gas, a conveyor unit having conveyor planks that are disposed above the aeration grate and that for transporting the bulk material are movable in a reciprocating manner in a conveying direction and counter to the conveying direction, a seal assembly that prevents grate riddlings and is attached to the stationary aeration grate, and a drive element that drives the conveyor planks and extends through the stationary aeration grate. The seal assembly may lie against the drive element, and spacing between the seal assembly and the drive element may be adjustable. Further, a method for preventing grate riddlings in a cooler may involve in the event of wear decreasing the spacing between the seal assembly and the drive element.

Abstract: A cooler for cooling bulk material such as cement clinker may include a stationary aeration grate that is for receiving the bulk material is passably by a flow of cooling gas, a conveyor unit having conveyor planks that are disposed above the aeration grate and that for transporting the bulk material are movable in a reciprocating manner in a conveying direction and counter to the conveying direction, a seal assembly that prevents grate riddlings and is attached to the stationary aeration grate, and a drive element that drives the conveyor planks and extends through the stationary aeration grate. The seal assembly may lie against the drive element, and spacing between the seal assembly and the drive element may be adjustable. Further, a method for preventing grate riddlings in a cooler may involve in the event of wear decreasing the spacing between the seal assembly and the drive element.

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 for comminuting brittle grinding stock includes 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 a pressing system for applying a force to the grinding stock via the grinding roller. The pressing system includes: at least one hydropneumatic store and at least one dual-articulation actuating cylinder. The dual-articulation actuating cylinder is connected to the hydropneumatic store and has two pistons and a housing which acts as a coupling rod.

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.