Problems and prospects of forming an environmentally clean technology for development of molybdenum deposits of the Ukrainian shield

Purpose. Justification of ecologically safe directions for the development of molybdenum ore deposits with an understudied geomechanical state of the rock massif. Research methodology. General scientific methods were used to assess the value indicators of ores, to summarize data on modern technologies for the development of vein-type deposits, and to analyze their impact on the environment. Research results. The conducted studies allowed to determine the value of molybdenum ores and the content and concentration indicators of various associated components, which is especially important for substantiating the technology of complex development of the ore deposit. It was also proven that the high variability of the content of useful components and the diversity of the mineralogical composition significantly affect their enrichment properties and conditions of separate or joint processing. The obtained data on the geological structure and nature of mineralization of the molybdenum ore occurrence allowed to establish morphological types of ore bodies (mainly vein-impregnated, less often linear-stockwork-like) and to determine alternative directions of complex development of the deposit taking into account the degree of their impact on the ecological state of the environment. According to the results of expert assessment of possible technological schemes for the extraction of molybdenum ores, preference was given to the underground method of development with the filling of the mined space. When forming factors that have a comprehensive impact on the environment, the operational indicators of the use of common systems for developing similar deposits in related industries of mining production and the degree of influence of their negative factors on landscape changes, water and air pollution, and the state of the earth's surface were taken into account. The originality. For the first time, a scientific approach has been formed regarding the development of methodological bases for designing a resource-saving and environmentally friendly technology for the development of molybdenum ore occurrences in the complex mining and geological conditions of the Ukrainian Shield. Practical value. The implementation of technological schemes for underground mining of steeply dipping ore veins with backfilling of the mined space with ore preparation rocks and recommendations for the use of technological and design solutions to reduce losses and depletion of ore will allow the implementation of a low-waste, environmentally friendly technology for the development of the molybdenum ore occurrence of the Ukrainian Shield.