### vertical roller mill balances

## FOR VERTICAL ROLLER MILLS Loesche

FOR VERTICAL ROLLER MILLS by Matthias Authenrieth, Thomas Hyttrek and Andreas Reintke, Loesche GmbH, Germany, and Steven McGarel, Senior Consultant, USA LMmasterforVRMsdd 1 190612 11:46There are few studies concerning the process simulation of vertical roller mills (VRMs) In this research work, the application of population balance model for simulation of a VRM in a cement clinker grinding circuit was investigated The residence time distribution (RTD) was measured, and the tankinseries and Weller models were employed to describe the residence time[PDF] Modeling and simulation of vertical roller millon population balance models is successfully applied [4, 38] Various grinding laws, energy relationships, control factors and controller design for cement grinding are discussed in [37] Figure1 Vertical roller mill for cement grinding [13] VRM shown in Figure1 uses hydraulically hardpressed conical shape 24 rollers against the horizontalPROCESS CONTROL FOR CEMENT GRINDING IN VERTICAL

## Vertical Mill Calculations | PDF | Mill (Grinding) | Nozzle

The theoretical power consumption of a vertical roller mill is expressed by the formula: N = KT A z v p [kW(net)] For An example of a heat balance for a vertical mill Case: 200 t/h, 8 kWh/t(net), drying from 8% to 05% moisture IN Feed, dry Water in feed Recirc mat {#) Grinding heat (a) Gas False air (*) Water injection TOTAL IN 302 30 252The vertical roller mill has high energy efficiency and the installation space is smaller compared with tube mills These days, the vertical roller mills have been widely adopted A）Structure (1) The rollers are hydraulically pressed against a disc table and the feed is ground between the rollers and the disc tableVertical roller mill for raw Application p rocess materials