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GOU VPO "The Ural Federal University named after the first President of Russia B.N. Eltsyn", Ekaterinburg, Russia (620002, Ekaterinburg, ul. Mira, 19) Abstract—Described herein is a programmed equipment complex "Granics" designed to determine the grain composition of loose material particles on the example of estimating geometrical sizes of iron ore lumps. Results of operating algorithm for processing of images of iron ore particles are illustrated. Results of full-scale testing of the complex at the mining and processing works are analyzed. Keywords-technical vision system; grain size analysis; digital processing of images; crushed material particles; nominal size; size under control I. INTRODUCTION It is always very important for the mining and processing works that the use of material and energy resources can be reduced. One of the tasks is achievement of stable grain size of crushed ore within the specified process parameters throughout all the stages of its processing. To solve this problem it is necessary in particular to develop new metering devices featuring multifunctionality, high accuracy and high speed of response. Most fully complying with these requirements are devices based on the technical vision system. These systems have such a merit as contactless measurement of parameters to be determined in the objects under study. Use of technical vision systems in mining industry allows to carry out visual separation of ores, microscopic estimation of minerals, optical measurement of various objects sizes and solve other tasks. Great interest to such systems is confirmed by a considerable number of publications devoted to their development and implementation (1-7). The present article represents results of industrial tests of programmed equipment complex "Granics" designed to determine distribution of geometrical sizes of crushed, palletized or granulated flowing material.

Industrial Tests Of Programmed Equipment Complex “Granics” Performed In The Facilities Of Erdenet Mining Corporation, Mongolia