Analiza maksymalnej wartości produkcji przy wzbogacaniu różnych klas ziarnowych węgla energetycznego w osadzarkach

Abstract

Coal preparation plants are currently considering the introduction of more complex control procedures. Maximization of yields of desired quality saleable products or optimization of total economic effect of the plant production are main tasks for control systems at present. Design of such systems requires a thorough understanding of the whole technological process, its characteristics and interaction among unit operations in the plant. Computer simulation is a convenient tool for designing and evaluating complex coal preparation processes. It enables determination of expected results of coal processing and selection of an optimal strategy of the control of the whole plant [4]. In design of the coal preparation process control systems the computer simulation models are very useful. Computer simulation allows considering, in an efficient way, various variants of technological system solutions, analysing conditions of preparation process course in case of commercial contracts changed and while raw coals characteristics are changed [4]. In the paper an application of computer simulation program for coal preparation processes analysis and their control has been presented. The integral part of this software is an algorithm of searching the function algorithm of control target, i.e. the maximum production function of preset quality. The procedure how to determine the maximum production value has been presented in four exemplary technological systems with one, two or else three jigs. Results of power coal enrichment in considered technological systems have been presented in the paper. For four version of technological scheme and different production foredesign the optimal separation densities for each jigs have been calculated. The basic difference between four technological systems is connected with different size distribution of raw coal. Relative production value in considered cases have been show.

W artykule przedstawiono wyniki analizy wzbogacania grawitacyjnego węgla we fragmencie układu technologicznego przeróbki węgla ⎯ wzbogacania w osadzarkach. Dla czterech wersji wzbogacania ⎯ z jedną, dwiema albo trzema osadzarkami wyznaczono optymalne gęstości rozdziału w osadzarkach przy różnej zadanej jakości koncentratu końcowego. Zasadnicza różnica warunków wzbogacania w poszczególnych wersjach układu technologicznego dotyczy różnych szerokości klas ziarnowych nadawy. Podane zostały względne wartości produkcji dla rozpatrywanych przypadków wzbogacania.