Development of a matrix model of a closed cement grinding scheme

Development of a matrix model of a closed cement grinding scheme

Alexander Nikolaevich Chokhonelidze, Akway Villilam Brown, Forgor Lempogo

This article develops a model of a closed shredding scheme in a ball mill with a separator with high efficiency at a cement plant. Various existing approaches to the development of such models are investigated and a new one is proposed. Based on the principle of material balance and stochastic representation of particle motion in the grinding system and using grinding and classification matrices, the Markov chain model is presented for a scheme consisting of a ball mill and a separator with high efficiency. The grinding matrix is calculated using the selection and crushing functions, and the classification matrix is determined by the Tromp separator curve. The results of field experiments conducted at an experienced cement plant are used to determine model parameters. Retrospective technological data related to the operation of a pilot grinding scheme,applied to check the model and determine the limiting process conditions. Using numerical simulation, the relationships between the controlled (loading of raw materials; separator cut-off size) and the observed (cement size characteristics; productivity; specific energy consumption) parameters of the circuit are determined.

Limited Liability Company «Publishing Center «Science »

2014

https://scholar.google.com/citations?view_op=view_citation&hl=en&user=BDvl0VYAAAAJ&citation_for_view=BDvl0VYAAAAJ:ufrVoPGSRksC

Russian