Justification of the possibility of obtaining secondary raw materials containing valuable components from technological waste

As a result of the activities of mining, processing and energy complexes, a huge amount of waste has accumulated on the territory of Ukraine. These wastes are promising in terms of their resource value, are embedded and constantly replenished with mineral raw materials of technogenic origin. They are considered as an integral part of the country's mineral raw material base of ferrous, non-ferrous, metallic, energy and rare valuable minerals. An analysis of the possibilities and prospects for obtaining secondary raw materials containing valuable components from technogenic waste was performed by fine classification by size using the example of waste from the enrichment of titanium-zirconium sands, metallurgy (slags and sludges), and energy (slags and fly ash). It is established by which size class it is necessary to divide the raw materials in order to obtain a product that is in demand by consumers, and how this division can be ensured. The need to use fine classification during processing is shown. The production waste of the Vilnohirsk Mining and Metallurgical Plant (VMMK) and its technogenic deposit are mainly represented by the mineral’s ilmenite, disten-sillimanite, staurolite, and tourmaline. During secondary processing of VMMK waste, it is possible to obtain a collective concentrate of these minerals and quartz sand with a heavy fraction content of less than 0.1% and Fe2O3 of no more than 0.025%, which will allow it to be effectively used as a high-quality quartz raw material in the glass industry. Processing of metallurgical waste allows obtaining such marketable products as iron, zinc, scandium, etc. The use of metallurgical waste by manufacturers of dry building mixes, cement, and road surfaces reduces the cost of these products and increases their quality. Processing of ash and slag waste (ASW) from the energy industry allows obtaining low-ash coal concentrate for the energy industry, a silicate fraction suitable for the construction sector, as well as other useful minerals such as iron, germanium, vanadium, and alumina for further production of aluminum, in quantities of industrial interest. The prospects of using a vibrating impact screen designed by the Institute of Mechanical Engineering and Materials Technology of the National Academy of Sciences of Ukraine in the processing of various technogenic wastes are proposed and shown. His tests showed quite high screening rates: for dry materials, the extraction of the class less than 0.02 mm into the sub-screen product was 75-80%; for wet materials from the accumulator – 65-70%, while the humidity of the super-screen material was reduced from 30 to 7-8%. Comprehensive recycling will reduce the amount of waste sent to storage facilities, reduce the areas that are currently being alienated for them and become uninhabitable, ensure increased profitability of enterprises, significantly preserve natural resources, and reduce the shortage of various materials.