Dissemination of the new technologies brings the new challenges in business of the mining and metallurgical companies, as well as the care of accepting changes by the employees. This paper deals with an analysis of impact the digital technology development in the mining and metallurgical companies in Serbia. The research methodology is focused on measuring and interpreting the digitalization by the qualitative and quantitative methods. The research findings show how the business of mining and metallurgical companies is transformed into a digital age and provides everything that is needed to combine the mining and metallurgical processes with a new technology for sustainable development.

Most magnesite deposits in Yugoslavia contain serpentine and olivine as impurities. Heavy medium separation is used for the beneficiation of raw magnesite ore with particle size greater than 0.35 ram. The results of investigations reported in this work indicate a possibility of efficient removal of serpentine and olivine using HGMS and superconducting magnetic separators for fines smaller than 0.35 ram. Based on these results a new technological process for magnesite upgrading was established. The process combines the gravity and magnetic separation processes for treatment of raw material, as well as for magnesite after its decarbonisation. It is possible to upgrade the magnesite fines below 0.35 mm which are rejected from the conventional processes. The grade of the magnesite concentrate of 98% and above may be obtained using this process.

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Smelter slag is obtained in the process of metallurgical converting of copper concentrate in the Smel

This study shows the results of flotation concentration of mica minerals from kaolinised granite taken from the "Bašića bare" deposit -Kobaš, Srbac, The Republic of Srpska (B&H). Mineralogical composition of kaolinised granite is as follows: kaolinite, feldspar, quartz, and mica. After separating >0.630 mm, and <0.043 mm size class where kaolinite is concentrated, the rest is -0.630+0.043 mm class containing quartz, feldspar and mica. The mica concentrate was obtained by the flotation concentration, while feldspar and quartz were in the flotation underflow. According to the mineralogical analysis, the most abundant minerals are mica and chlorite/clays, while quartz and feldspar occur much less, and accessory minerals are represented in trace. The semi-quantitative mineralogical analysis obtained by the X-ray powder diffraction (XRPD) method of the mica concentrate amount to: mica ≈55%, chlorite/clays ≈35%, quartz ≈5%, feldspars (plagioclase and K-feldspars combined) ≈5%.