Energy Consumption Model Of Roller Grinding System And Its Application In Project

Energy saving is a key of promoting continuable development of economic society and building a well-to-do society. Industry is the primary part of consuming energy and raw and processed materials, and cement industry consumes a lot of energy, so saving energy and lowering consumption is becoming an important and long-term task, the key of that is improving grinding efficiency and reducing electricity consumption.In practice, roller press is the delegate of pressing pre-grinding which is the leading of pressing grinding. Pre-grinding is consisted of cycle pre-grinding, hybrid grinding, and combination grinding and semi-finished grinding.Comparing with ball mill closed-circuit system, combination grinding system and semi-finished grinding system have obvious dominance. Although semi-finished grinding is better in production increase, its extent of saving energy is lower than combination grinding, and choosing equipment model is restricted at a certain extent, so in the design of practice, combination grinding is used more. Especially in changing produce item, because of the limit of ability intrinsic equipment ( especially the weak ability of intrinsic classifier), choosing semi-finished grinding has big localization, but cycle pre-grinding and combination grinding have more feasibility, and combination can receive better effect in energy saving.This paper expounds primary grinding equipment and roller pre-grinding system, builds a steady-state model for roller grinding system. In a continuous grinding system, the state in which system is under dynamic balance is an ideal state which is a certainly balanced and random process, in this process, the averages of every variable are not changed with time unless random disturb causes fluctuation. The steady-state model in this paper is built under the state. This model is used to gained material flux and granularity distributing in any stagy and analyzes the system in energy consumption. It analyses the energy consumption of Neimeng gu Cement Company with this model, puts forward rule of choosing classifier equipment in this system and the optimization of comminuting parameter M.