CEMENT RAW MATERIAL BLENDING: AN ADAPTIVE CONTROL STRATEGY.

Abstract:

The main problem of the blending process in the cement industry is to produce a ground meal to feed the kiln at the desired chemical composition from raw materials whose composition is not well known and cannot be measured continuously. Pre-homogenization parks tend to reduce the variance of these compositions at the mill input. In order to improve the control, we propose to estimate the raw materials composition from ground meal analysis and to forecast the actual input to the mill using a model of the park. The main control loop with variable reference is implemented by a minimal variance controller, raw materials composition is estimated by an on-line estimator feed by the results of an X-ray analyser and average information on parks. The availability of a model of the park allows mill input composition forecasting and better tuning of weight feeders percentage.

Año de publicación:

1985

Keywords:

Fuente:

scopus