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HARDWARE AND SOFTWARE COMPLEX FOR SORTING AND CLASSIFICATION OF MINERAL RAW MATERIALS BY VISUAL INDICATORS

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A hardware and software complex developed by the authors is presented. The complex is designed for sorting and classifying samples and small batches of mineral raw materials in a semi-automatic mode according to parameters such as size, color, and purity. The complex contains nodes for the lower and upper illumination, a registration unit with a television camera, as well as a projection unit for displaying the classification results into the analysis zone. The role of the operator is reduced to mechanical actions to place and remove mineral samples from the analysis area. Experimental studies were carried out using beryl, chrysolite, amethyst, lapis lazuli, quartz and aquamarine, 69 samples in total. The relative errors in determining the color tone, saturation and lightness were 2.2, 6.2 and 9.1% of the entire measured range, respectively. The average spread of the determined values of transparency, the number of inclusions and cracks is 3.1, 9.5 and 4.8%, respectively. The error in determining the dimensional parameters is 0.5 mm. The proposed technical solution can be used for the technological assessment of the raw materials suitability for beneficiation by the method of optical sorting with the optimal separation thresholds determination.

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