Abstract
Many researchers have found that the nature of the grain size distribution makes it possible to assume the regularity of such a distribution, despite the difference in the physical properties of minerals. There are quite a large number of approximating functions for describing the regularities of the separation of coal and mineral complexes by size, obtained experimentally. There is a need to develop a new methodological approach and tools for selecting the best approximation function. The paper presents the results of predicting the total size characteristics of anthracites of the Krasnogorsky mine by the RRSB, Pogosov, and Weining functions. The quality of the approximation is estimated by the value of the standard deviation. It is established that the Weining formula allows us to calculate with a minimum error the granulometric composition of anthracites of the named deposit in the range of fineness from 0 to 150 mm.
Highlights
Studies of the size characteristics have shown that there is a certain regularity in the distribution of coal particles by size classes, for the description of which the functions discussed earlier can be used to predict the total size characteristics of the" plus " coal of the Kuznetsk basin in the size range from 0 to 300 mm [1].The granulometric composition is performed by the sieve method
Many researchers have found that the nature of the grain size distribution makes it possible to assume the regularity of such a distribution, despite the difference in the physical properties of minerals
The paper presents the results of predicting the total size characteristics of anthracites of the Krasnogorsky mine by the RRSB, Pogosov, and Weining functions
Summary
Studies of the size characteristics have shown that there is a certain regularity in the distribution of coal particles by size classes, for the description of which the functions discussed earlier can be used to predict the total size characteristics of the" plus " coal of the Kuznetsk basin in the size range from 0 to 300 mm [1]. The granulometric composition is performed by the sieve method. The method consists in sieving the fuel on sieves and determining the yields of the size classes. The size of the sides of the mesh cells of the sieves used in the sieve analysis is selected in accordance with Annex 1 of the state standard [2]. To achieve this goal, the approximations of RRSB, A.M. Pogosov and A. The quality of the approximations was estimated by the value of the standard deviation; - the best approximation function is used to calculate the output values in the range from 0 to 150 mm
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