Forecast of technological indicators of X-ray fluorescence separation by ore fractional characteristics

The forecast of the enrichment of any mineral raw materials is based on fractional characteristics that allow us to estimate the maximum enrichment by the chosen method of enrichment. This is especially evident for sensor-based sorting methods when using surface methods of obtaining information, such as, for example, X-ray fluorescence separation. In this case, the fractional characteristics have properties related to the measurement geometry of the surface properties of the lumps. The paper analyzes the lump mineral nonuniformity on a lump sample of copper ore. It is revealed that the nonuniformity of the surface mineralization of the lumps increases as the value of the analytical parameter increases too. To assess the measure of nonuniformity, indicators of absolute values are more informative, such as, for example, the mean square deviation and the sum of the modulus of deviation from the mean value. It is established that particular implementations differ from each other and require averaging of the probability distribution density function of the analytical parameter, which is used as a sign of separation, for the subsequent prediction of enrichment. Experimental partial and averaged fractional characteristics for the studied copper ore sample were obtained. For the accepted separation boundaries, the ideal technological parameters of pre-concentration using X-ray fluorescence separation were determined, and a conclusion was made about the potential enrichment of the ore studied by X-ray fluorescence separation.

Tsypin E. F., Ovchinnikova T. Yu., Efremova T. A., Ziyatdinov S. V. Forecast of technological indicators of X-ray fluorescence separation by ore fractional characteristics. MIAB. Mining Inf. Anal. Bull. 2024;(1-1):87—101. [In Russ]. DOI: 10.25018/0236_1493_2024_011_0_87.

Tsypin E. F., ORCID iD 0000-0003-3921-2695, Dr. Sci. (Eng.), Professor, Professor of the Mineral Dressing Department, Federal State Budgetary Educational Institution of Higher Education “Ural State Mining University”, 30 Kuibyshev str., Yekaterinburg, Russia, 620144, office phone: + 7(343) -275−91−54, tsipin.e@mail.ru;
Ovchinnikova T. Yu., ORCID iD 0000-0001-7000-9295, Cand. Sci. (Eng.), Associate Professor of the Mineral Dressing Department, Federal State Budgetary Educational Institution of Higher Education “Ural State Mining University”, 30 Kuibyshev str., Yekaterinburg, Russia, 620144, tatyana.ovchinnikova@m.ursmu.ru;
Efremova T. A., ORCID iD 0000-0002-9917-6676, Cand. Sci. (Eng.) , Senior Researcher of the Laboratory of Mineral Dressing of Non-ferrous Metal Ores and Technogenic Raw Materials, Mineral Dressing Department of JSC “Uralmekhanobr”, 87 Khokhryakova str., Yekaterinburg, Russia, 620144, efremova_ta@umbr.ru;
Ziyatdinov S. V., ORCID iD 0009-0006-6621-3748, Researcher of the Laboratory of Mineral Dressing of Non-ferrous Metal Ores and Technogenic Raw Materials, Mineral Dressing Department of JSC “Uralmekhanobr”, 87 Khokhryakova str., Yekaterinburg, Russia, 620144, svziyat@mail.ru.

Ovchinnikova T.Yu., e-mail: tatyana.ovchinnikova@m.ursmu.ru.

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